+/*
+ * Copyright (C) 2012
+ * Wolfgang Bumiller
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
#include <stdio.h>
#include <stdarg.h>
#include "gmqcc.h"
#include "lexer.h"
-typedef struct {
- char *name;
- ast_expression *var;
-} varentry_t;
+/* beginning of locals */
+#define PARSER_HT_LOCALS 2
+#define PARSER_HT_SIZE 1024
+#define TYPEDEF_HT_SIZE 16
+
+enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
typedef struct {
lex_file *lex;
int tok;
- MEM_VECTOR_MAKE(varentry_t, globals);
- MEM_VECTOR_MAKE(varentry_t, fields);
- MEM_VECTOR_MAKE(ast_function*, functions);
- MEM_VECTOR_MAKE(ast_value*, imm_float);
- MEM_VECTOR_MAKE(ast_value*, imm_string);
- MEM_VECTOR_MAKE(ast_value*, imm_vector);
+ ast_expression **globals;
+ ast_expression **fields;
+ ast_function **functions;
+ ast_value **imm_float;
+ ast_value **imm_string;
+ ast_value **imm_vector;
+ size_t translated;
+
+ /* must be deleted first, they reference immediates and values */
+ ast_value **accessors;
ast_value *imm_float_zero;
+ ast_value *imm_float_one;
ast_value *imm_vector_zero;
+ size_t crc_globals;
+ size_t crc_fields;
+
ast_function *function;
- MEM_VECTOR_MAKE(varentry_t, locals);
- size_t blocklocal;
+
+ /* All the labels the function defined...
+ * Should they be in ast_function instead?
+ */
+ ast_label **labels;
+ ast_goto **gotos;
+
+ /* A list of hashtables for each scope */
+ ht *variables;
+ ht htfields;
+ ht htglobals;
+ ht *typedefs;
+
+ /* not to be used directly, we use the hash table */
+ ast_expression **_locals;
+ size_t *_blocklocals;
+ ast_value **_typedefs;
+ size_t *_blocktypedefs;
+ lex_ctx *_block_ctx;
size_t errors;
+ /* we store the '=' operator info */
+ const oper_info *assign_op;
+
/* TYPE_FIELD -> parser_find_fields is used instead of find_var
* TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
* anything else: type error
*/
qcint memberof;
-} parser_t;
-MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
-MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
-MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
-MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
-MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
-MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
-MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
+ /* Keep track of our ternary vs parenthesis nesting state.
+ * If we reach a 'comma' operator in a ternary without a paren,
+ * we shall trigger -Wternary-precedence.
+ */
+ enum parser_pot *pot;
-static void parser_pop_local(parser_t *parser);
-static bool parser_variable(parser_t *parser, ast_block *localblock);
-static ast_block* parser_parse_block(parser_t *parser);
-static bool parser_parse_block_into(parser_t *parser, ast_block *block);
-static ast_expression* parser_parse_statement_or_block(parser_t *parser);
-static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma);
-static ast_expression* parser_expression(parser_t *parser, bool stopatcomma);
+ /* pragma flags */
+ bool noref;
+} parser_t;
-void parseerror(parser_t *parser, const char *fmt, ...)
+static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
+
+static void parser_enterblock(parser_t *parser);
+static bool parser_leaveblock(parser_t *parser);
+static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
+static bool parse_typedef(parser_t *parser);
+static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn, bool is_static);
+static ast_block* parse_block(parser_t *parser);
+static bool parse_block_into(parser_t *parser, ast_block *block);
+static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
+static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
+static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
+static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
+
+static void parseerror(parser_t *parser, const char *fmt, ...)
{
- va_list ap;
+ va_list ap;
- parser->errors++;
+ parser->errors++;
- va_start(ap, fmt);
- vprintmsg(LVL_ERROR, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "parse error", fmt, ap);
- va_end(ap);
+ va_start(ap, fmt);
+ con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
+ va_end(ap);
}
/* returns true if it counts as an error */
-bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
+static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
{
- va_list ap;
- int lvl = LVL_WARNING;
-
- if (!OPTS_WARN(warntype))
- return false;
-
- if (opts_werror) {
- parser->errors++;
- lvl = LVL_ERROR;
- }
-
- va_start(ap, fmt);
- vprintmsg(lvl, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "warning", fmt, ap);
- va_end(ap);
+ bool r;
+ va_list ap;
+ va_start(ap, fmt);
+ r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
+ va_end(ap);
+ return r;
+}
- return opts_werror;
+static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
+{
+ bool r;
+ va_list ap;
+ va_start(ap, fmt);
+ r = vcompile_warning(ctx, warntype, fmt, ap);
+ va_end(ap);
+ return r;
}
/**********************************************************************
{
/* lex_do kills the previous token */
parser->tok = lex_do(parser->lex);
- if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
+ if (parser->tok == TOKEN_EOF)
+ return true;
+ if (parser->tok >= TOKEN_ERROR) {
+ parseerror(parser, "lex error");
return false;
+ }
return true;
}
-/* lift a token out of the parser so it's not destroyed by parser_next */
-token *parser_lift(parser_t *parser)
-{
- token *tok = parser->lex->tok;
- parser->lex->tok = NULL;
- return tok;
-}
-
-#define parser_tokval(p) (p->lex->tok->value)
-#define parser_token(p) (p->lex->tok)
-#define parser_ctx(p) (p->lex->tok->ctx)
+#define parser_tokval(p) ((p)->lex->tok.value)
+#define parser_token(p) (&((p)->lex->tok))
+#define parser_ctx(p) ((p)->lex->tok.ctx)
-ast_value* parser_const_float(parser_t *parser, double d)
+static ast_value* parser_const_float(parser_t *parser, double d)
{
size_t i;
ast_value *out;
- for (i = 0; i < parser->imm_float_count; ++i) {
- if (parser->imm_float[i]->constval.vfloat == d)
+ for (i = 0; i < vec_size(parser->imm_float); ++i) {
+ const double compare = parser->imm_float[i]->constval.vfloat;
+ if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
return parser->imm_float[i];
}
out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
- out->isconst = true;
+ out->cvq = CV_CONST;
+ out->hasvalue = true;
out->constval.vfloat = d;
- if (!parser_t_imm_float_add(parser, out)) {
- ast_value_delete(out);
- return NULL;
- }
+ vec_push(parser->imm_float, out);
return out;
}
-ast_value* parser_const_float_0(parser_t *parser)
+static ast_value* parser_const_float_0(parser_t *parser)
{
if (!parser->imm_float_zero)
parser->imm_float_zero = parser_const_float(parser, 0);
return parser->imm_float_zero;
}
-char *parser_strdup(const char *str)
+static ast_value* parser_const_float_1(parser_t *parser)
+{
+ if (!parser->imm_float_one)
+ parser->imm_float_one = parser_const_float(parser, 1);
+ return parser->imm_float_one;
+}
+
+static char *parser_strdup(const char *str)
{
if (str && !*str) {
/* actually dup empty strings */
- char *out = mem_a(1);
+ char *out = (char*)mem_a(1);
*out = 0;
return out;
}
return util_strdup(str);
}
-ast_value* parser_const_string(parser_t *parser, const char *str)
+static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
{
size_t i;
ast_value *out;
- for (i = 0; i < parser->imm_string_count; ++i) {
+ for (i = 0; i < vec_size(parser->imm_string); ++i) {
if (!strcmp(parser->imm_string[i]->constval.vstring, str))
return parser->imm_string[i];
}
- out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
- out->isconst = true;
+ if (dotranslate) {
+ char name[32];
+ snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
+ out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
+ } else
+ out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
+ out->cvq = CV_CONST;
+ out->hasvalue = true;
out->constval.vstring = parser_strdup(str);
- if (!parser_t_imm_string_add(parser, out)) {
- ast_value_delete(out);
- return NULL;
- }
+ vec_push(parser->imm_string, out);
return out;
}
-ast_value* parser_const_vector(parser_t *parser, vector v)
+static ast_value* parser_const_vector(parser_t *parser, vector v)
{
size_t i;
ast_value *out;
- for (i = 0; i < parser->imm_vector_count; ++i) {
+ for (i = 0; i < vec_size(parser->imm_vector); ++i) {
if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
return parser->imm_vector[i];
}
out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
- out->isconst = true;
+ out->cvq = CV_CONST;
+ out->hasvalue = true;
out->constval.vvec = v;
- if (!parser_t_imm_vector_add(parser, out)) {
- ast_value_delete(out);
- return NULL;
- }
+ vec_push(parser->imm_vector, out);
return out;
}
-ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
+static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
{
vector v;
v.x = x;
return parser_const_vector(parser, v);
}
-ast_value* parser_const_vector_0(parser_t *parser)
+static ast_value* parser_const_vector_0(parser_t *parser)
{
if (!parser->imm_vector_zero)
parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
return parser->imm_vector_zero;
}
-ast_expression* parser_find_field(parser_t *parser, const char *name)
+static ast_expression* parser_find_field(parser_t *parser, const char *name)
{
- size_t i;
- for (i = 0; i < parser->fields_count; ++i) {
- if (!strcmp(parser->fields[i].name, name))
- return parser->fields[i].var;
- }
- return NULL;
+ return ( ast_expression*)util_htget(parser->htfields, name);
}
-ast_expression* parser_find_global(parser_t *parser, const char *name)
+static ast_expression* parser_find_global(parser_t *parser, const char *name)
{
- size_t i;
- for (i = 0; i < parser->globals_count; ++i) {
- if (!strcmp(parser->globals[i].name, name))
- return parser->globals[i].var;
- }
- return NULL;
+ return (ast_expression*)util_htget(parser->htglobals, name);
}
-ast_expression* parser_find_param(parser_t *parser, const char *name)
+static ast_expression* parser_find_param(parser_t *parser, const char *name)
{
size_t i;
ast_value *fun;
if (!parser->function)
return NULL;
fun = parser->function->vtype;
- for (i = 0; i < fun->expression.params_count; ++i) {
+ for (i = 0; i < vec_size(fun->expression.params); ++i) {
if (!strcmp(fun->expression.params[i]->name, name))
return (ast_expression*)(fun->expression.params[i]);
}
return NULL;
}
-ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
+static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
{
- size_t i;
+ size_t i, hash;
+ ast_expression *e;
+
+ hash = util_hthash(parser->htglobals, name);
+
*isparam = false;
- for (i = parser->locals_count; i > upto;) {
+ for (i = vec_size(parser->variables); i > upto;) {
--i;
- if (!strcmp(parser->locals[i].name, name))
- return parser->locals[i].var;
+ if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
+ return e;
}
*isparam = true;
return parser_find_param(parser, name);
}
-ast_expression* parser_find_var(parser_t *parser, const char *name)
+static ast_expression* parser_find_var(parser_t *parser, const char *name)
{
bool dummy;
ast_expression *v;
return v;
}
-typedef struct {
- MEM_VECTOR_MAKE(ast_value*, p);
-} paramlist_t;
-MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
-
-static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
+static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
{
- paramlist_t params;
- ast_value *var;
- lex_ctx ctx = parser_ctx(parser);
- int vtype = basetype;
- int temptype;
- size_t i;
-
- MEM_VECTOR_INIT(¶ms, p);
-
- *isfunc = false;
-
- if (parser->tok == '(') {
- *isfunc = true;
- while (true) {
- ast_value *param;
- ast_value *fld;
- bool isfield = false;
- bool dummy;
-
- if (!parser_next(parser))
- goto on_error;
-
- if (parser->tok == ')')
- break;
-
- if (parser->tok == '.') {
- isfield = true;
- if (!parser_next(parser)) {
- parseerror(parser, "expected field parameter type");
- goto on_error;
- }
- }
-
- temptype = parser_token(parser)->constval.t;
- if (!parser_next(parser))
- goto on_error;
-
- param = parser_parse_type(parser, temptype, &dummy);
- (void)dummy;
-
- if (!param)
- goto on_error;
+ size_t i, hash;
+ ast_value *e;
+ hash = util_hthash(parser->typedefs[0], name);
- if (parser->tok == TOKEN_IDENT) {
- /* named parameter */
- if (!ast_value_set_name(param, parser_tokval(parser)))
- goto on_error;
- if (!parser_next(parser))
- goto on_error;
- }
-
- if (isfield) {
- fld = ast_value_new(ctx, param->name, TYPE_FIELD);
- fld->expression.next = (ast_expression*)param;
- param = fld;
- }
-
- if (!paramlist_t_p_add(¶ms, param)) {
- parseerror(parser, "Out of memory while parsing typename");
- goto on_error;
- }
-
- if (parser->tok == ',')
- continue;
- if (parser->tok == ')')
- break;
- parseerror(parser, "Unexpected token");
- goto on_error;
- }
- if (!parser_next(parser))
- goto on_error;
+ for (i = vec_size(parser->typedefs); i > upto;) {
+ --i;
+ if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
+ return e;
}
-
- var = ast_value_new(ctx, "<unnamed>", vtype);
- if (!var)
- goto on_error;
- MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
- return var;
-on_error:
- for (i = 0; i < params.p_count; ++i)
- ast_value_delete(params.p[i]);
- MEM_VECTOR_CLEAR(¶ms, p);
return NULL;
}
} sy_elem;
typedef struct
{
- MEM_VECTOR_MAKE(sy_elem, out);
- MEM_VECTOR_MAKE(sy_elem, ops);
+ sy_elem *out;
+ sy_elem *ops;
} shunt;
-MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
-MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
+
+#define SY_PAREN_EXPR '('
+#define SY_PAREN_FUNC 'f'
+#define SY_PAREN_INDEX '['
+#define SY_PAREN_TERNARY '?'
static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
sy_elem e;
e.etype = 0;
+ e.off = 0;
e.out = v;
e.block = NULL;
e.ctx = ctx;
static sy_elem syblock(lex_ctx ctx, ast_block *v) {
sy_elem e;
e.etype = 0;
+ e.off = 0;
e.out = (ast_expression*)v;
e.block = v;
e.ctx = ctx;
static sy_elem syop(lex_ctx ctx, const oper_info *op) {
sy_elem e;
e.etype = 1 + (op - operators);
+ e.off = 0;
e.out = NULL;
e.block = NULL;
e.ctx = ctx;
# define DEBUGSHUNTDO(x)
#endif
-static bool parser_sy_pop(parser_t *parser, shunt *sy)
+/* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
+ * so we need to rotate it to become ent.(foo[n]).
+ */
+static bool rotate_entfield_array_index_nodes(ast_expression **out)
+{
+ ast_array_index *index;
+ ast_entfield *entfield;
+
+ ast_value *field;
+ ast_expression *sub;
+ ast_expression *entity;
+
+ lex_ctx ctx = ast_ctx(*out);
+
+ if (!ast_istype(*out, ast_array_index))
+ return false;
+ index = (ast_array_index*)*out;
+
+ if (!ast_istype(index->array, ast_entfield))
+ return false;
+ entfield = (ast_entfield*)index->array;
+
+ if (!ast_istype(entfield->field, ast_value))
+ return false;
+ field = (ast_value*)entfield->field;
+
+ sub = index->index;
+ entity = entfield->entity;
+
+ ast_delete(index);
+
+ index = ast_array_index_new(ctx, (ast_expression*)field, sub);
+ entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
+ *out = (ast_expression*)entfield;
+
+ return true;
+}
+
+static bool immediate_is_true(lex_ctx ctx, ast_value *v)
+{
+ switch (v->expression.vtype) {
+ case TYPE_FLOAT:
+ return !!v->constval.vfloat;
+ case TYPE_INTEGER:
+ return !!v->constval.vint;
+ case TYPE_VECTOR:
+ if (OPTS_FLAG(CORRECT_LOGIC))
+ return v->constval.vvec.x &&
+ v->constval.vvec.y &&
+ v->constval.vvec.z;
+ else
+ return !!(v->constval.vvec.x);
+ case TYPE_STRING:
+ if (!v->constval.vstring)
+ return false;
+ if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
+ return true;
+ return !!v->constval.vstring[0];
+ default:
+ compile_error(ctx, "internal error: immediate_is_true on invalid type");
+ return !!v->constval.vfunc;
+ }
+}
+
+static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
{
const oper_info *op;
lex_ctx ctx;
ast_expression *exprs[3];
ast_block *blocks[3];
ast_value *asvalue[3];
- size_t i, assignop;
+ ast_binstore *asbinstore;
+ size_t i, assignop, addop, subop;
qcint generated_op = 0;
- if (!sy->ops_count) {
+ char ty1[1024];
+ char ty2[1024];
+
+ if (!vec_size(sy->ops)) {
parseerror(parser, "internal error: missing operator");
return false;
}
- if (sy->ops[sy->ops_count-1].paren) {
+ if (vec_last(sy->ops).paren) {
parseerror(parser, "unmatched parenthesis");
return false;
}
- op = &operators[sy->ops[sy->ops_count-1].etype - 1];
- ctx = sy->ops[sy->ops_count-1].ctx;
+ op = &operators[vec_last(sy->ops).etype - 1];
+ ctx = vec_last(sy->ops).ctx;
- DEBUGSHUNTDO(printf("apply %s\n", op->op));
+ DEBUGSHUNTDO(con_out("apply %s\n", op->op));
- if (sy->out_count < op->operands) {
- parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", sy->out_count,
+ if (vec_size(sy->out) < op->operands) {
+ parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
op->op, (int)op->id);
return false;
}
- sy->ops_count--;
+ vec_shrinkby(sy->ops, 1);
+
+ /* op(:?) has no input and no output */
+ if (!op->operands)
+ return true;
- sy->out_count -= op->operands;
+ vec_shrinkby(sy->out, op->operands);
for (i = 0; i < op->operands; ++i) {
- exprs[i] = sy->out[sy->out_count+i].out;
- blocks[i] = sy->out[sy->out_count+i].block;
+ exprs[i] = sy->out[vec_size(sy->out)+i].out;
+ blocks[i] = sy->out[vec_size(sy->out)+i].block;
asvalue[i] = (ast_value*)exprs[i];
}
- if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
+ if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
parseerror(parser, "internal error: operator cannot be applied on empty blocks");
return false;
}
(exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
exprs[0]->expression.vtype != T)
#define CanConstFold1(A) \
- (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
+ (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
+ (A)->expression.vtype != TYPE_FUNCTION)
#define CanConstFold(A, B) \
(CanConstFold1(A) && CanConstFold1(B))
#define ConstV(i) (asvalue[(i)]->constval.vvec)
}
break;
+ case opid1('['):
+ if (exprs[0]->expression.vtype != TYPE_ARRAY &&
+ !(exprs[0]->expression.vtype == TYPE_FIELD &&
+ exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
+ {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ parseerror(parser, "cannot index value of type %s", ty1);
+ return false;
+ }
+ if (exprs[1]->expression.vtype != TYPE_FLOAT) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ parseerror(parser, "index must be of type float, not %s", ty1);
+ return false;
+ }
+ out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
+ if (rotate_entfield_array_index_nodes(&out))
+ {
+#if 0
+ /* This is not broken in fteqcc anymore */
+ if (opts.standard != COMPILER_GMQCC) {
+ /* this error doesn't need to make us bail out */
+ (void)!parsewarning(parser, WARN_EXTENSIONS,
+ "accessing array-field members of an entity without parenthesis\n"
+ " -> this is an extension from -std=gmqcc");
+ }
+#endif
+ }
+ break;
+
case opid1(','):
if (blocks[0]) {
- if (!ast_block_exprs_add(blocks[0], exprs[1]))
+ if (!ast_block_add_expr(blocks[0], exprs[1]))
return false;
} else {
blocks[0] = ast_block_new(ctx);
- if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
- !ast_block_exprs_add(blocks[0], exprs[1]))
+ if (!ast_block_add_expr(blocks[0], exprs[0]) ||
+ !ast_block_add_expr(blocks[0], exprs[1]))
{
return false;
}
if (!ast_block_set_type(blocks[0], exprs[1]))
return false;
- sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
+ vec_push(sy->out, syblock(ctx, blocks[0]));
return true;
+ case opid2('+','P'):
+ out = exprs[0];
+ break;
case opid2('-','P'):
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
break;
case TYPE_STRING:
- if (CanConstFold1(exprs[0]))
- out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
- else
- out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
+ if (CanConstFold1(exprs[0])) {
+ if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
+ out = (ast_expression*)parser_const_float(parser, !ConstS(0));
+ else
+ out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
+ } else {
+ if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
+ else
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
+ }
break;
/* we don't constant-fold NOT for these types */
case TYPE_ENTITY:
generated_op += 1; /* INSTR_OR */
case opid2('&','&'):
generated_op += INSTR_AND;
+#if 0
if (NotSameType(TYPE_FLOAT)) {
parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
type_name[exprs[0]->expression.vtype],
parseerror(parser, "TODO: optional early out");
return false;
}
- if (opts_standard == COMPILER_GMQCC)
- printf("TODO: early out logic\n");
+#endif
if (CanConstFold(exprs[0], exprs[1]))
- out = (ast_expression*)parser_const_float(parser,
- (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
+ {
+ if (OPTS_FLAG(PERL_LOGIC)) {
+ if (immediate_is_true(ctx, asvalue[0]))
+ out = exprs[1];
+ }
+ else
+ out = (ast_expression*)parser_const_float(parser,
+ ( (generated_op == INSTR_OR)
+ ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
+ : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
+ ? 0 : 1);
+ }
else
+ {
+ if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
+ return false;
+ }
+ for (i = 0; i < 2; ++i) {
+ if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
+ if (!out) break;
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
+ if (!out) break;
+ exprs[i] = out; out = NULL;
+ if (OPTS_FLAG(PERL_LOGIC)) {
+ /* here we want to keep the right expressions' type */
+ break;
+ }
+ }
+ else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
+ if (!out) break;
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
+ if (!out) break;
+ exprs[i] = out; out = NULL;
+ if (OPTS_FLAG(PERL_LOGIC)) {
+ /* here we want to keep the right expressions' type */
+ break;
+ }
+ }
+ }
out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
+ }
+ break;
+
+ case opid2('?',':'):
+ if (vec_last(parser->pot) != POT_TERNARY2) {
+ parseerror(parser, "mismatched parenthesis/ternary");
+ return false;
+ }
+ vec_pop(parser->pot);
+ if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
+ ast_type_to_string(exprs[1], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[2], ty2, sizeof(ty2));
+ parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
+ return false;
+ }
+ if (CanConstFold1(exprs[0]))
+ out = (ConstF(0) ? exprs[1] : exprs[2]);
+ else
+ out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
break;
case opid1('>'):
break;
case opid1('='):
- if (ast_istype(exprs[0], ast_entfield))
- assignop = type_storep_instr[exprs[0]->expression.vtype];
+ if (ast_istype(exprs[0], ast_entfield)) {
+ ast_expression *field = ((ast_entfield*)exprs[0])->field;
+ if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
+ exprs[0]->expression.vtype == TYPE_FIELD &&
+ exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
+ {
+ assignop = type_storep_instr[TYPE_VECTOR];
+ }
+ else
+ assignop = type_storep_instr[exprs[0]->expression.vtype];
+ if (assignop == AINSTR_END ||
+ !ast_compare_type(field->expression.next, exprs[1]))
+ {
+ ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
+ field->expression.next->expression.vtype == TYPE_FUNCTION &&
+ exprs[1]->expression.vtype == TYPE_FUNCTION)
+ {
+ if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
+ "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
+ {
+ parser->errors++;
+ }
+ }
+ else
+ parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
+ }
+ }
else
- assignop = type_store_instr[exprs[0]->expression.vtype];
+ {
+ if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
+ exprs[0]->expression.vtype == TYPE_FIELD &&
+ exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
+ {
+ assignop = type_store_instr[TYPE_VECTOR];
+ }
+ else {
+ assignop = type_store_instr[exprs[0]->expression.vtype];
+ }
+
+ if (assignop == AINSTR_END) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
+ }
+ else if (!ast_compare_type(exprs[0], exprs[1])) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
+ exprs[0]->expression.vtype == TYPE_FUNCTION &&
+ exprs[1]->expression.vtype == TYPE_FUNCTION)
+ {
+ if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
+ "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
+ {
+ parser->errors++;
+ }
+ }
+ else
+ parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
+ }
+ }
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
+ }
out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
break;
+ case opid3('+','+','P'):
+ case opid3('-','-','P'):
+ /* prefix ++ */
+ if (exprs[0]->expression.vtype != TYPE_FLOAT) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ parseerror(parser, "invalid type for prefix increment: %s", ty1);
+ return false;
+ }
+ if (op->id == opid3('+','+','P'))
+ addop = INSTR_ADD_F;
+ else
+ addop = INSTR_SUB_F;
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ if (ast_istype(exprs[0], ast_entfield)) {
+ out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
+ exprs[0],
+ (ast_expression*)parser_const_float_1(parser));
+ } else {
+ out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
+ exprs[0],
+ (ast_expression*)parser_const_float_1(parser));
+ }
+ break;
+ case opid3('S','+','+'):
+ case opid3('S','-','-'):
+ /* prefix ++ */
+ if (exprs[0]->expression.vtype != TYPE_FLOAT) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ parseerror(parser, "invalid type for suffix increment: %s", ty1);
+ return false;
+ }
+ if (op->id == opid3('S','+','+')) {
+ addop = INSTR_ADD_F;
+ subop = INSTR_SUB_F;
+ } else {
+ addop = INSTR_SUB_F;
+ subop = INSTR_ADD_F;
+ }
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ if (ast_istype(exprs[0], ast_entfield)) {
+ out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
+ exprs[0],
+ (ast_expression*)parser_const_float_1(parser));
+ } else {
+ out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
+ exprs[0],
+ (ast_expression*)parser_const_float_1(parser));
+ }
+ if (!out)
+ return false;
+ out = (ast_expression*)ast_binary_new(ctx, subop,
+ out,
+ (ast_expression*)parser_const_float_1(parser));
+ break;
case opid2('+','='):
case opid2('-','='):
if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
(exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
{
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
- type_name[exprs[0]->expression.vtype],
- type_name[exprs[1]->expression.vtype]);
+ ty1, ty2);
return false;
}
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
+ }
if (ast_istype(exprs[0], ast_entfield))
assignop = type_storep_instr[exprs[0]->expression.vtype];
else
return false;
};
break;
+ case opid2('*','='):
+ case opid2('/','='):
+ if (exprs[1]->expression.vtype != TYPE_FLOAT ||
+ !(exprs[0]->expression.vtype == TYPE_FLOAT ||
+ exprs[0]->expression.vtype == TYPE_VECTOR))
+ {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ parseerror(parser, "invalid types used in expression: %s and %s",
+ ty1, ty2);
+ return false;
+ }
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ if (ast_istype(exprs[0], ast_entfield))
+ assignop = type_storep_instr[exprs[0]->expression.vtype];
+ else
+ assignop = type_store_instr[exprs[0]->expression.vtype];
+ switch (exprs[0]->expression.vtype) {
+ case TYPE_FLOAT:
+ out = (ast_expression*)ast_binstore_new(ctx, assignop,
+ (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
+ exprs[0], exprs[1]);
+ break;
+ case TYPE_VECTOR:
+ if (op->id == opid2('*','=')) {
+ out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
+ exprs[0], exprs[1]);
+ } else {
+ /* there's no DIV_VF */
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
+ (ast_expression*)parser_const_float_1(parser),
+ exprs[1]);
+ if (!out)
+ return false;
+ out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
+ exprs[0], out);
+ }
+ break;
+ default:
+ parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ };
+ break;
+ case opid2('&','='):
+ case opid2('|','='):
+ if (NotSameType(TYPE_FLOAT)) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ parseerror(parser, "invalid types used in expression: %s and %s",
+ ty1, ty2);
+ return false;
+ }
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ if (ast_istype(exprs[0], ast_entfield))
+ assignop = type_storep_instr[exprs[0]->expression.vtype];
+ else
+ assignop = type_store_instr[exprs[0]->expression.vtype];
+ out = (ast_expression*)ast_binstore_new(ctx, assignop,
+ (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
+ exprs[0], exprs[1]);
+ break;
+ case opid3('&','~','='):
+ /* This is like: a &= ~(b);
+ * But QC has no bitwise-not, so we implement it as
+ * a -= a & (b);
+ */
+ if (NotSameType(TYPE_FLOAT)) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ parseerror(parser, "invalid types used in expression: %s and %s",
+ ty1, ty2);
+ return false;
+ }
+ if (ast_istype(exprs[0], ast_entfield))
+ assignop = type_storep_instr[exprs[0]->expression.vtype];
+ else
+ assignop = type_store_instr[exprs[0]->expression.vtype];
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
+ if (!out)
+ return false;
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
+ asbinstore->keep_dest = true;
+ out = (ast_expression*)asbinstore;
+ break;
}
#undef NotSameType
return false;
}
- DEBUGSHUNTDO(printf("applied %s\n", op->op));
- sy->out[sy->out_count++] = syexp(ctx, out);
+ DEBUGSHUNTDO(con_out("applied %s\n", op->op));
+ vec_push(sy->out, syexp(ctx, out));
return true;
}
size_t fid;
size_t paramcount;
- sy->ops_count--;
- fid = sy->ops[sy->ops_count].off;
+ vec_shrinkby(sy->ops, 1);
+ fid = sy->ops[vec_size(sy->ops)].off;
/* out[fid] is the function
* everything above is parameters...
* more = ast_block
*/
- if (sy->out_count < 1 || sy->out_count <= fid) {
+ if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
parseerror(parser, "internal error: function call needs function and parameter list...");
return false;
}
fun = sy->out[fid].out;
- call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
+ if (fun == intrinsic_debug_typestring) {
+ char ty[1024];
+ if (fid+2 != vec_size(sy->out) ||
+ vec_last(sy->out).block)
+ {
+ parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
+ return false;
+ }
+ ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
+ ast_unref(vec_last(sy->out).out);
+ sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
+ (ast_expression*)parser_const_string(parser, ty, false));
+ vec_shrinkby(sy->out, 1);
+ return true;
+ }
+
+ call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
if (!call) {
- parseerror(parser, "out of memory");
+ parseerror(parser, "internal error: failed to create ast_call node");
return false;
}
- if (fid+1 == sy->out_count) {
+ if (fid+1 == vec_size(sy->out)) {
/* no arguments */
paramcount = 0;
- } else if (fid+2 == sy->out_count) {
+ } else if (fid+2 == vec_size(sy->out)) {
ast_block *params;
- sy->out_count--;
- params = sy->out[sy->out_count].block;
+ vec_shrinkby(sy->out, 1);
+ params = sy->out[vec_size(sy->out)].block;
if (!params) {
/* 1 param */
paramcount = 1;
- if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
- ast_delete(sy->out[sy->out_count].out);
- parseerror(parser, "out of memory");
- return false;
- }
+ vec_push(call->params, sy->out[vec_size(sy->out)].out);
} else {
- paramcount = params->exprs_count;
- MEM_VECTOR_MOVE(params, exprs, call, params);
+ paramcount = vec_size(params->exprs);
+ call->params = params->exprs;
+ params->exprs = NULL;
ast_delete(params);
}
+ if (!ast_call_check_types(call))
+ parser->errors++;
} else {
parseerror(parser, "invalid function call");
return false;
parseerror(parser, "could not determine function return type");
return false;
} else {
- if (fun->expression.params_count != paramcount) {
+ if (vec_size(fun->expression.params) != paramcount &&
+ !((fun->expression.flags & AST_FLAG_VARIADIC) &&
+ vec_size(fun->expression.params) < paramcount))
+ {
ast_value *fval;
+ const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
+
fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
- if (opts_standard == COMPILER_GMQCC)
+ if (opts.standard == COMPILER_GMQCC)
{
if (fval)
- parseerror(parser, "too few parameters for call to %s: expected %i, got %i",
- fval->name, (int)fun->expression.params_count, paramcount);
+ parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
+ " -> `%s` has been declared here: %s:%i",
+ fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
+ fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
else
- parseerror(parser, "too few parameters for function call: expected %i, got %i",
- (int)fun->expression.params_count, paramcount);
+ parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
+ " -> it has been declared here: %s:%i",
+ fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
+ ast_ctx(fun).file, (int)ast_ctx(fun).line);
return false;
}
else
{
if (fval)
return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
- "too few parameters for call to %s: expected %i, got %i",
- fval->name, (int)fun->expression.params_count, paramcount);
+ "too %s parameters for call to %s: expected %i, got %i\n"
+ " -> `%s` has been declared here: %s:%i",
+ fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
+ fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
else
return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
- "too few parameters for function call: expected %i, got %i",
- (int)fun->expression.params_count, paramcount);
+ "too %s parameters for function call: expected %i, got %i\n"
+ " -> it has been declared here: %s:%i",
+ fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
+ ast_ctx(fun).file, (int)ast_ctx(fun).line);
}
}
}
static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
{
- if (!sy->ops_count) {
+ if (!vec_size(sy->ops)) {
parseerror(parser, "unmatched closing paren");
return false;
}
- if (sy->ops[sy->ops_count-1].paren == 1) {
+ /* this would for bit a + (x) because there are no operators inside (x)
+ if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
parseerror(parser, "empty parenthesis expression");
return false;
}
- while (sy->ops_count) {
- if (sy->ops[sy->ops_count-1].paren == 'f') {
+ */
+ while (vec_size(sy->ops)) {
+ if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
if (!parser_close_call(parser, sy))
return false;
break;
}
- if (sy->ops[sy->ops_count-1].paren == 1) {
- sy->ops_count--;
+ if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
+ vec_shrinkby(sy->ops, 1);
return !functions_only;
}
- if (!parser_sy_pop(parser, sy))
- return false;
- }
- return true;
-}
-
-static void parser_reclassify_token(parser_t *parser)
-{
+ if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
+ if (functions_only)
+ return false;
+ /* pop off the parenthesis */
+ vec_shrinkby(sy->ops, 1);
+ /* then apply the index operator */
+ if (!parser_sy_apply_operator(parser, sy))
+ return false;
+ return true;
+ }
+ if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
+ if (functions_only)
+ return false;
+ if (vec_last(parser->pot) != POT_TERNARY1) {
+ parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
+ return false;
+ }
+ vec_last(parser->pot) = POT_TERNARY2;
+ /* pop off the parenthesis */
+ vec_shrinkby(sy->ops, 1);
+ return true;
+ }
+ if (!parser_sy_apply_operator(parser, sy))
+ return false;
+ }
+ return true;
+}
+
+static void parser_reclassify_token(parser_t *parser)
+{
size_t i;
for (i = 0; i < operator_count; ++i) {
if (!strcmp(parser_tokval(parser), operators[i].op)) {
}
}
-static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma)
+static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
{
ast_expression *expr = NULL;
shunt sy;
* end of a condition is an unmatched closing paren
*/
int parens = 0;
+ int ternaries = 0;
- MEM_VECTOR_INIT(&sy, out);
- MEM_VECTOR_INIT(&sy, ops);
+ sy.out = NULL;
+ sy.ops = NULL;
parser->lex->flags.noops = false;
else
parser->memberof = 0;
- if (parser->tok == TOKEN_IDENT)
+ if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
+ parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
+ {
+ /* a translatable string */
+ ast_value *val;
+
+ if (wantop) {
+ parseerror(parser, "expected operator or end of statement, got constant");
+ goto onerr;
+ }
+
+ parser->lex->flags.noops = true;
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "use _(\"string\") to create a translatable string constant");
+ goto onerr;
+ }
+ parser->lex->flags.noops = false;
+ if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
+ parseerror(parser, "expected a constant string in translatable-string extension");
+ goto onerr;
+ }
+ val = parser_const_string(parser, parser_tokval(parser), true);
+ wantop = true;
+ if (!val)
+ return NULL;
+ vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
+ DEBUGSHUNTDO(con_out("push string\n"));
+
+ if (!parser_next(parser) || parser->tok != ')') {
+ parseerror(parser, "expected closing paren after translatable string");
+ goto onerr;
+ }
+ }
+ else if (parser->tok == TOKEN_IDENT)
{
ast_expression *var;
if (wantop) {
}
wantop = true;
/* variable */
- if (opts_standard == COMPILER_GMQCC)
+ if (opts.standard == COMPILER_GMQCC)
{
if (parser->memberof == TYPE_ENTITY) {
/* still get vars first since there could be a fieldpointer */
var = parser_find_field(parser, parser_tokval(parser));
}
if (!var) {
- parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
- goto onerr;
+ /* intrinsics */
+ if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
+ var = (ast_expression*)intrinsic_debug_typestring;
+
+ }
+ else
+ {
+ parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
+ goto onerr;
+ }
}
- if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
- parseerror(parser, "out of memory");
- goto onerr;
+ else
+ {
+ if (ast_istype(var, ast_value)) {
+ ((ast_value*)var)->uses++;
+ }
+ else if (ast_istype(var, ast_member)) {
+ ast_member *mem = (ast_member*)var;
+ if (ast_istype(mem->owner, ast_value))
+ ((ast_value*)(mem->owner))->uses++;
+ }
}
- DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
+ vec_push(sy.out, syexp(parser_ctx(parser), var));
+ DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
}
else if (parser->tok == TOKEN_FLOATCONST) {
ast_value *val;
wantop = true;
val = parser_const_float(parser, (parser_token(parser)->constval.f));
if (!val)
- return false;
- if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
- parseerror(parser, "out of memory");
- goto onerr;
- }
- DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
+ return NULL;
+ vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
+ DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
}
- else if (parser->tok == TOKEN_INTCONST) {
+ else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
ast_value *val;
if (wantop) {
parseerror(parser, "expected operator or end of statement, got constant");
wantop = true;
val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
if (!val)
- return false;
- if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
- parseerror(parser, "out of memory");
- goto onerr;
- }
- DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
+ return NULL;
+ vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
+ DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
}
else if (parser->tok == TOKEN_STRINGCONST) {
ast_value *val;
goto onerr;
}
wantop = true;
- val = parser_const_string(parser, parser_tokval(parser));
+ val = parser_const_string(parser, parser_tokval(parser), false);
if (!val)
- return false;
- if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
- parseerror(parser, "out of memory");
- goto onerr;
- }
- DEBUGSHUNTDO(printf("push string\n"));
+ return NULL;
+ vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
+ DEBUGSHUNTDO(con_out("push string\n"));
}
else if (parser->tok == TOKEN_VECTORCONST) {
ast_value *val;
wantop = true;
val = parser_const_vector(parser, parser_token(parser)->constval.v);
if (!val)
- return false;
- if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
- parseerror(parser, "out of memory");
- goto onerr;
- }
- DEBUGSHUNTDO(printf("push '%g %g %g'\n",
+ return NULL;
+ vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
+ DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
parser_token(parser)->constval.v.x,
parser_token(parser)->constval.v.y,
parser_token(parser)->constval.v.z));
parseerror(parser, "internal error: '(' should be classified as operator");
goto onerr;
}
+ else if (parser->tok == '[') {
+ parseerror(parser, "internal error: '[' should be classified as operator");
+ goto onerr;
+ }
else if (parser->tok == ')') {
if (wantop) {
- DEBUGSHUNTDO(printf("do[op] )\n"));
+ DEBUGSHUNTDO(con_out("do[op] )\n"));
--parens;
if (parens < 0)
break;
/* closing an opening paren */
if (!parser_close_paren(parser, &sy, false))
goto onerr;
+ if (vec_last(parser->pot) != POT_PAREN) {
+ parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
+ goto onerr;
+ }
+ vec_pop(parser->pot);
} else {
- DEBUGSHUNTDO(printf("do[nop] )\n"));
+ DEBUGSHUNTDO(con_out("do[nop] )\n"));
--parens;
if (parens < 0)
break;
/* allowed for function calls */
if (!parser_close_paren(parser, &sy, true))
goto onerr;
+ if (vec_last(parser->pot) != POT_PAREN) {
+ parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
+ goto onerr;
+ }
+ vec_pop(parser->pot);
+ }
+ wantop = true;
+ }
+ else if (parser->tok == ']') {
+ if (!wantop)
+ parseerror(parser, "operand expected");
+ --parens;
+ if (parens < 0)
+ break;
+ if (!parser_close_paren(parser, &sy, false))
+ goto onerr;
+ if (vec_last(parser->pot) != POT_PAREN) {
+ parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
+ goto onerr;
}
+ vec_pop(parser->pot);
wantop = true;
}
+ else if (parser->tok == TOKEN_TYPENAME) {
+ parseerror(parser, "unexpected typename");
+ goto onerr;
+ }
else if (parser->tok != TOKEN_OPERATOR) {
if (wantop) {
parseerror(parser, "expected operator or end of statement");
else
{
/* classify the operator */
- /* TODO: suffix operators */
const oper_info *op;
const oper_info *olast = NULL;
size_t o;
for (o = 0; o < operator_count; ++o) {
if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
- !(operators[o].flags & OP_SUFFIX) && /* remove this */
+ /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
!strcmp(parser_tokval(parser), operators[o].op))
{
break;
op = &operators[o];
/* when declaring variables, a comma starts a new variable */
- if (op->id == opid1(',') && !parens && stopatcomma)
+ if (op->id == opid1(',') && !parens && stopatcomma) {
+ /* fixup the token */
+ parser->tok = ',';
+ break;
+ }
+
+ /* a colon without a pervious question mark cannot be a ternary */
+ if (!ternaries && op->id == opid2(':','?')) {
+ parser->tok = ':';
break;
+ }
+
+ if (op->id == opid1(',')) {
+ if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
+ (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
+ }
+ }
- if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
- olast = &operators[sy.ops[sy.ops_count-1].etype-1];
+ if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
+ olast = &operators[vec_last(sy.ops).etype-1];
while (olast && (
(op->prec < olast->prec) ||
(op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
{
- if (!parser_sy_pop(parser, &sy))
+ if (!parser_sy_apply_operator(parser, &sy))
goto onerr;
- if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
- olast = &operators[sy.ops[sy.ops_count-1].etype-1];
+ if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
+ olast = &operators[vec_last(sy.ops).etype-1];
else
olast = NULL;
}
- if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
+ if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
/* for gmqcc standard: open up the namespace of the previous type */
- ast_expression *prevex = sy.out[sy.out_count-1].out;
+ ast_expression *prevex = vec_last(sy.out).out;
if (!prevex) {
parseerror(parser, "unexpected member operator");
goto onerr;
if (op->id == opid1('(')) {
if (wantop) {
- DEBUGSHUNTDO(printf("push (\n"));
- ++parens;
+ size_t sycount = vec_size(sy.out);
+ DEBUGSHUNTDO(con_out("push [op] (\n"));
+ ++parens; vec_push(parser->pot, POT_PAREN);
/* we expected an operator, this is the function-call operator */
- if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
- parseerror(parser, "out of memory");
- goto onerr;
- }
+ vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
} else {
- ++parens;
- if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
- parseerror(parser, "out of memory");
- goto onerr;
- }
- DEBUGSHUNTDO(printf("push (\n"));
+ ++parens; vec_push(parser->pot, POT_PAREN);
+ vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
+ DEBUGSHUNTDO(con_out("push [nop] (\n"));
}
wantop = false;
- } else {
- DEBUGSHUNTDO(printf("push operator %s\n", op->op));
- if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
+ } else if (op->id == opid1('[')) {
+ if (!wantop) {
+ parseerror(parser, "unexpected array subscript");
+ goto onerr;
+ }
+ ++parens; vec_push(parser->pot, POT_PAREN);
+ /* push both the operator and the paren, this makes life easier */
+ vec_push(sy.ops, syop(parser_ctx(parser), op));
+ vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
+ wantop = false;
+ } else if (op->id == opid2('?',':')) {
+ vec_push(sy.ops, syop(parser_ctx(parser), op));
+ vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
+ wantop = false;
+ ++ternaries;
+ vec_push(parser->pot, POT_TERNARY1);
+ } else if (op->id == opid2(':','?')) {
+ if (!vec_size(parser->pot)) {
+ parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
+ goto onerr;
+ }
+ if (vec_last(parser->pot) != POT_TERNARY1) {
+ parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
+ goto onerr;
+ }
+ if (!parser_close_paren(parser, &sy, false))
goto onerr;
+ vec_push(sy.ops, syop(parser_ctx(parser), op));
wantop = false;
+ --ternaries;
+ } else {
+ DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
+ vec_push(sy.ops, syop(parser_ctx(parser), op));
+ wantop = !!(op->flags & OP_SUFFIX);
}
}
if (!parser_next(parser)) {
goto onerr;
}
- if (parser->tok == ';') {
+ if (parser->tok == ';' ||
+ (!parens && parser->tok == ']'))
+ {
break;
}
}
- while (sy.ops_count) {
- if (!parser_sy_pop(parser, &sy))
+ while (vec_size(sy.ops)) {
+ if (!parser_sy_apply_operator(parser, &sy))
goto onerr;
}
parser->lex->flags.noops = true;
- if (!sy.out_count) {
+ if (!vec_size(sy.out)) {
parseerror(parser, "empty expression");
expr = NULL;
} else
expr = sy.out[0].out;
- MEM_VECTOR_CLEAR(&sy, out);
- MEM_VECTOR_CLEAR(&sy, ops);
- DEBUGSHUNTDO(printf("shunt done\n"));
+ vec_free(sy.out);
+ vec_free(sy.ops);
+ DEBUGSHUNTDO(con_out("shunt done\n"));
+ if (vec_size(parser->pot)) {
+ parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
+ return NULL;
+ }
+ vec_free(parser->pot);
return expr;
onerr:
parser->lex->flags.noops = true;
- MEM_VECTOR_CLEAR(&sy, out);
- MEM_VECTOR_CLEAR(&sy, ops);
+ vec_free(sy.out);
+ vec_free(sy.ops);
return NULL;
}
-static ast_expression* parser_expression(parser_t *parser, bool stopatcomma)
+static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
{
- ast_expression *e = parser_expression_leave(parser, stopatcomma);
+ ast_expression *e = parse_expression_leave(parser, stopatcomma);
if (!e)
return NULL;
if (!parser_next(parser)) {
return e;
}
-static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
+static void parser_enterblock(parser_t *parser)
+{
+ vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
+ vec_push(parser->_blocklocals, vec_size(parser->_locals));
+ vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
+ vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
+ vec_push(parser->_block_ctx, parser_ctx(parser));
+}
+
+static bool parser_leaveblock(parser_t *parser)
+{
+ bool rv = true;
+ size_t locals, typedefs;
+
+ if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
+ parseerror(parser, "internal error: parser_leaveblock with no block");
+ return false;
+ }
+
+ util_htdel(vec_last(parser->variables));
+ vec_pop(parser->variables);
+ if (!vec_size(parser->_blocklocals)) {
+ parseerror(parser, "internal error: parser_leaveblock with no block (2)");
+ return false;
+ }
+
+ locals = vec_last(parser->_blocklocals);
+ vec_pop(parser->_blocklocals);
+ while (vec_size(parser->_locals) != locals) {
+ ast_expression *e = vec_last(parser->_locals);
+ ast_value *v = (ast_value*)e;
+ vec_pop(parser->_locals);
+ if (ast_istype(e, ast_value) && !v->uses) {
+ if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name)) {
+ parser->errors++;
+ rv = false;
+ }
+ }
+ }
+
+ typedefs = vec_last(parser->_blocktypedefs);
+ while (vec_size(parser->_typedefs) != typedefs) {
+ ast_delete(vec_last(parser->_typedefs));
+ vec_pop(parser->_typedefs);
+ }
+ util_htdel(vec_last(parser->typedefs));
+ vec_pop(parser->typedefs);
+
+ vec_pop(parser->_block_ctx);
+ return rv;
+}
+
+static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
+{
+ vec_push(parser->_locals, e);
+ util_htset(vec_last(parser->variables), name, (void*)e);
+}
+
+static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
+{
+ bool ifnot = false;
+ ast_unary *unary;
+ ast_expression *prev;
+
+ if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
+ {
+ prev = cond;
+ cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
+ if (!cond) {
+ ast_unref(prev);
+ parseerror(parser, "internal error: failed to process condition");
+ return NULL;
+ }
+ ifnot = !ifnot;
+ }
+ else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
+ {
+ /* vector types need to be cast to true booleans */
+ ast_binary *bin = (ast_binary*)cond;
+ if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
+ {
+ /* in perl-logic, AND and OR take care of the -fcorrect-logic */
+ prev = cond;
+ cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
+ if (!cond) {
+ ast_unref(prev);
+ parseerror(parser, "internal error: failed to process condition");
+ return NULL;
+ }
+ ifnot = !ifnot;
+ }
+ }
+
+ unary = (ast_unary*)cond;
+ while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
+ {
+ cond = unary->operand;
+ unary->operand = NULL;
+ ast_delete(unary);
+ ifnot = !ifnot;
+ unary = (ast_unary*)cond;
+ }
+
+ if (!cond)
+ parseerror(parser, "internal error: failed to process condition");
+
+ if (ifnot) *_ifnot = !*_ifnot;
+ return cond;
+}
+
+static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
{
ast_ifthen *ifthen;
- ast_expression *cond, *ontrue, *onfalse = NULL;
+ ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
+ bool ifnot = false;
lex_ctx ctx = parser_ctx(parser);
- /* skip the 'if' and check for opening paren */
- if (!parser_next(parser) || parser->tok != '(') {
+ (void)block; /* not touching */
+
+ /* skip the 'if', parse an optional 'not' and check for an opening paren */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected condition or 'not'");
+ return false;
+ }
+ if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
+ ifnot = true;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected condition in parenthesis");
+ return false;
+ }
+ }
+ if (parser->tok != '(') {
parseerror(parser, "expected 'if' condition in parenthesis");
return false;
}
return false;
}
/* parse the condition */
- cond = parser_expression_leave(parser, false);
+ cond = parse_expression_leave(parser, false);
if (!cond)
return false;
/* closing paren */
ast_delete(cond);
return false;
}
- ontrue = parser_parse_statement_or_block(parser);
- if (!ontrue) {
+ if (!parse_statement_or_block(parser, &ontrue)) {
ast_delete(cond);
return false;
}
ast_delete(cond);
return false;
}
- onfalse = parser_parse_statement_or_block(parser);
- if (!onfalse) {
+ if (!parse_statement_or_block(parser, &onfalse)) {
ast_delete(ontrue);
ast_delete(cond);
return false;
}
}
- ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
+ cond = process_condition(parser, cond, &ifnot);
+ if (!cond) {
+ if (ontrue) ast_delete(ontrue);
+ if (onfalse) ast_delete(onfalse);
+ return false;
+ }
+
+ if (ifnot)
+ ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
+ else
+ ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
*out = (ast_expression*)ifthen;
return true;
}
-static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
+static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
{
ast_loop *aloop;
ast_expression *cond, *ontrue;
+ bool ifnot = false;
+
lex_ctx ctx = parser_ctx(parser);
+ (void)block; /* not touching */
+
/* skip the 'while' and check for opening paren */
if (!parser_next(parser) || parser->tok != '(') {
parseerror(parser, "expected 'while' condition in parenthesis");
return false;
}
/* parse the condition */
- cond = parser_expression_leave(parser, false);
+ cond = parse_expression_leave(parser, false);
if (!cond)
return false;
/* closing paren */
ast_delete(cond);
return false;
}
- ontrue = parser_parse_statement_or_block(parser);
- if (!ontrue) {
+ if (!parse_statement_or_block(parser, &ontrue)) {
ast_delete(cond);
return false;
}
- aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
+ cond = process_condition(parser, cond, &ifnot);
+ if (!cond) {
+ ast_delete(ontrue);
+ return false;
+ }
+ aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
*out = (ast_expression*)aloop;
return true;
}
-static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
+static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
{
ast_loop *aloop;
ast_expression *cond, *ontrue;
+ bool ifnot = false;
+
lex_ctx ctx = parser_ctx(parser);
+ (void)block; /* not touching */
+
/* skip the 'do' and get the body */
if (!parser_next(parser)) {
parseerror(parser, "expected loop body");
return false;
}
- ontrue = parser_parse_statement_or_block(parser);
- if (!ontrue)
+ if (!parse_statement_or_block(parser, &ontrue))
return false;
/* expect the "while" */
return false;
}
/* parse the condition */
- cond = parser_expression_leave(parser, false);
+ cond = parse_expression_leave(parser, false);
if (!cond)
return false;
/* closing paren */
return false;
}
- aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
+ cond = process_condition(parser, cond, &ifnot);
+ if (!cond) {
+ ast_delete(ontrue);
+ return false;
+ }
+ aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
*out = (ast_expression*)aloop;
return true;
}
-static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
+static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
{
- ast_loop *aloop;
+ ast_loop *aloop;
ast_expression *initexpr, *cond, *increment, *ontrue;
- size_t oldblocklocal;
+ ast_value *typevar;
+
+ bool retval = true;
+ bool ifnot = false;
lex_ctx ctx = parser_ctx(parser);
- oldblocklocal = parser->blocklocal;
- parser->blocklocal = parser->locals_count;
+ parser_enterblock(parser);
initexpr = NULL;
cond = NULL;
goto onerr;
}
- if (parser->tok == TOKEN_TYPENAME) {
- if (opts_standard != COMPILER_GMQCC) {
+ typevar = NULL;
+ if (parser->tok == TOKEN_IDENT)
+ typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
+
+ if (typevar || parser->tok == TOKEN_TYPENAME) {
+ if (opts.standard != COMPILER_GMQCC) {
if (parsewarning(parser, WARN_EXTENSIONS,
"current standard does not allow variable declarations in for-loop initializers"))
goto onerr;
}
-
- parseerror(parser, "TODO: assignment of new variables to be non-const");
- goto onerr;
- if (!parser_variable(parser, block))
+ if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, false))
goto onerr;
}
else if (parser->tok != ';')
{
- initexpr = parser_expression_leave(parser, false);
+ initexpr = parse_expression_leave(parser, false);
if (!initexpr)
goto onerr;
}
/* parse the condition */
if (parser->tok != ';') {
- cond = parser_expression_leave(parser, false);
+ cond = parse_expression_leave(parser, false);
if (!cond)
goto onerr;
}
/* parse the incrementor */
if (parser->tok != ')') {
- increment = parser_expression_leave(parser, false);
+ increment = parse_expression_leave(parser, false);
if (!increment)
goto onerr;
+ if (!ast_side_effects(increment)) {
+ if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
+ goto onerr;
+ }
}
/* closing paren */
parseerror(parser, "expected for-loop body");
goto onerr;
}
- ontrue = parser_parse_statement_or_block(parser);
- if (!ontrue) {
+ if (!parse_statement_or_block(parser, &ontrue))
goto onerr;
- }
- aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
+ if (cond) {
+ cond = process_condition(parser, cond, &ifnot);
+ if (!cond)
+ goto onerr;
+ }
+ aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
*out = (ast_expression*)aloop;
- while (parser->locals_count > parser->blocklocal)
- parser_pop_local(parser);
- parser->blocklocal = oldblocklocal;
- return true;
+ if (!parser_leaveblock(parser))
+ retval = false;
+ return retval;
onerr:
if (initexpr) ast_delete(initexpr);
if (cond) ast_delete(cond);
if (increment) ast_delete(increment);
- while (parser->locals_count > parser->blocklocal)
- parser_pop_local(parser);
- parser->blocklocal = oldblocklocal;
+ (void)!parser_leaveblock(parser);
return false;
}
-static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
+static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
{
- if (parser->tok == TOKEN_TYPENAME)
- {
- /* local variable */
- if (!block) {
- parseerror(parser, "cannot declare a variable from here");
+ ast_expression *exp = NULL;
+ ast_return *ret = NULL;
+ ast_value *expected = parser->function->vtype;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ (void)block; /* not touching */
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected return expression");
+ return false;
+ }
+
+ if (parser->tok != ';') {
+ exp = parse_expression(parser, false);
+ if (!exp)
return false;
+
+ if (exp->expression.vtype != expected->expression.next->expression.vtype) {
+ parseerror(parser, "return with invalid expression");
}
- if (opts_standard == COMPILER_QCC) {
- if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
- return false;
- }
- if (!parser_variable(parser, block))
+
+ ret = ast_return_new(ctx, exp);
+ if (!ret) {
+ ast_delete(exp);
return false;
- *out = NULL;
- return true;
- }
- else if (parser->tok == TOKEN_KEYWORD)
- {
- if (!strcmp(parser_tokval(parser), "local"))
- {
- if (!block) {
- parseerror(parser, "cannot declare a local variable here");
- return false;
- }
- if (!parser_next(parser)) {
- parseerror(parser, "expected variable declaration");
- return false;
- }
- if (!parser_variable(parser, block))
- return false;
- *out = NULL;
- return true;
}
- else if (!strcmp(parser_tokval(parser), "return"))
- {
- ast_expression *exp = NULL;
- ast_return *ret = NULL;
- ast_value *expected = parser->function->vtype;
+ } else {
+ if (!parser_next(parser))
+ parseerror(parser, "parse error");
+ if (expected->expression.next->expression.vtype != TYPE_VOID) {
+ if (opts.standard != COMPILER_GMQCC)
+ (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
+ else
+ parseerror(parser, "return without value");
+ }
+ ret = ast_return_new(ctx, NULL);
+ }
+ *out = (ast_expression*)ret;
+ return true;
+}
+
+static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
+{
+ lex_ctx ctx = parser_ctx(parser);
+
+ (void)block; /* not touching */
+
+ if (!parser_next(parser) || parser->tok != ';') {
+ parseerror(parser, "expected semicolon");
+ return false;
+ }
+
+ if (!parser_next(parser))
+ parseerror(parser, "parse error");
+
+ *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
+ return true;
+}
+/* returns true when it was a variable qualifier, false otherwise!
+ * on error, cvq is set to CV_WRONG
+ */
+static bool parse_var_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *noreturn, bool *is_static)
+{
+ bool had_const = false;
+ bool had_var = false;
+ bool had_noref = false;
+ bool had_noreturn = false;
+ bool had_attrib = false;
+ bool had_static = false;
+
+ *cvq = CV_NONE;
+ for (;;) {
+ if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
+ had_attrib = true;
+ /* parse an attribute */
if (!parser_next(parser)) {
- parseerror(parser, "expected return expression");
+ parseerror(parser, "expected attribute after `[[`");
+ *cvq = CV_WRONG;
return false;
}
-
- if (parser->tok != ';') {
- exp = parser_expression(parser, false);
- if (!exp)
+ if (!strcmp(parser_tokval(parser), "noreturn")) {
+ had_noreturn = true;
+ if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
+ parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
+ *cvq = CV_WRONG;
return false;
-
- if (exp->expression.vtype != expected->expression.next->expression.vtype) {
- parseerror(parser, "return with invalid expression");
}
-
- ret = ast_return_new(exp->expression.node.context, exp);
- if (!ret) {
- ast_delete(exp);
+ }
+ else if (!strcmp(parser_tokval(parser), "noref")) {
+ had_noref = true;
+ if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
+ parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
+ *cvq = CV_WRONG;
return false;
}
- } else {
- if (!parser_next(parser))
- parseerror(parser, "parse error");
- if (expected->expression.next->expression.vtype != TYPE_VOID) {
- if (opts_standard != COMPILER_GMQCC)
- (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
- else
- parseerror(parser, "return without value");
+ }
+ else
+ {
+ /* Skip tokens until we hit a ]] */
+ (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
+ while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
+ if (!parser_next(parser)) {
+ parseerror(parser, "error inside attribute");
+ *cvq = CV_WRONG;
+ return false;
+ }
}
- ret = ast_return_new(parser_ctx(parser), NULL);
}
- *out = (ast_expression*)ret;
- return true;
}
- else if (!strcmp(parser_tokval(parser), "if"))
- {
- return parser_parse_if(parser, block, out);
- }
- else if (!strcmp(parser_tokval(parser), "while"))
- {
- return parser_parse_while(parser, block, out);
- }
- else if (!strcmp(parser_tokval(parser), "do"))
- {
- return parser_parse_dowhile(parser, block, out);
- }
- else if (!strcmp(parser_tokval(parser), "for"))
- {
- if (opts_standard == COMPILER_QCC) {
- if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
- return false;
- }
- return parser_parse_for(parser, block, out);
+ else if (!strcmp(parser_tokval(parser), "static"))
+ had_static = true;
+ else if (!strcmp(parser_tokval(parser), "const"))
+ had_const = true;
+ else if (!strcmp(parser_tokval(parser), "var"))
+ had_var = true;
+ else if (with_local && !strcmp(parser_tokval(parser), "local"))
+ had_var = true;
+ else if (!strcmp(parser_tokval(parser), "noref"))
+ had_noref = true;
+ else if (!had_const && !had_var && !had_noref && !had_noreturn && !had_attrib && !had_static) {
+ return false;
}
- parseerror(parser, "Unexpected keyword");
+ else
+ break;
+ if (!parser_next(parser))
+ goto onerr;
+ }
+ if (had_const)
+ *cvq = CV_CONST;
+ else if (had_var)
+ *cvq = CV_VAR;
+ else
+ *cvq = CV_NONE;
+ *noref = had_noref;
+ *noreturn = had_noreturn;
+ *is_static = had_static;
+ return true;
+onerr:
+ parseerror(parser, "parse error after variable qualifier");
+ *cvq = CV_WRONG;
+ return true;
+}
+
+static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_expression *operand;
+ ast_value *opval;
+ ast_value *typevar;
+ ast_switch *switchnode;
+ ast_switch_case swcase;
+
+ int cvq;
+ bool noref, noreturn, is_static;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ (void)block; /* not touching */
+ (void)opval;
+
+ /* parse over the opening paren */
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected switch operand in parenthesis");
+ return false;
+ }
+
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected switch operand");
+ return false;
+ }
+ /* parse the operand */
+ operand = parse_expression_leave(parser, false);
+ if (!operand)
+ return false;
+
+ switchnode = ast_switch_new(ctx, operand);
+
+ /* closing paren */
+ if (parser->tok != ')') {
+ ast_delete(switchnode);
+ parseerror(parser, "expected closing paren after 'switch' operand");
+ return false;
+ }
+
+ /* parse over the opening paren */
+ if (!parser_next(parser) || parser->tok != '{') {
+ ast_delete(switchnode);
+ parseerror(parser, "expected list of cases");
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ ast_delete(switchnode);
+ parseerror(parser, "expected 'case' or 'default'");
+ return false;
+ }
+
+ /* new block; allow some variables to be declared here */
+ parser_enterblock(parser);
+ while (true) {
+ typevar = NULL;
+ if (parser->tok == TOKEN_IDENT)
+ typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
+ if (typevar || parser->tok == TOKEN_TYPENAME) {
+ if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, false)) {
+ ast_delete(switchnode);
+ return false;
+ }
+ continue;
+ }
+ if (parse_var_qualifiers(parser, true, &cvq, &noref, &noreturn, &is_static))
+ {
+ if (cvq == CV_WRONG) {
+ ast_delete(switchnode);
+ return false;
+ }
+ if (!parse_variable(parser, block, false, cvq, NULL, noref, noreturn, is_static)) {
+ ast_delete(switchnode);
+ return false;
+ }
+ continue;
+ }
+ break;
+ }
+
+ /* case list! */
+ while (parser->tok != '}') {
+ ast_block *caseblock;
+
+ if (parser->tok != TOKEN_KEYWORD) {
+ ast_delete(switchnode);
+ parseerror(parser, "expected 'case' or 'default'");
+ return false;
+ }
+ if (!strcmp(parser_tokval(parser), "case")) {
+ if (!parser_next(parser)) {
+ ast_delete(switchnode);
+ parseerror(parser, "expected expression for case");
+ return false;
+ }
+ swcase.value = parse_expression_leave(parser, false);
+ if (!swcase.value) {
+ ast_delete(switchnode);
+ parseerror(parser, "expected expression for case");
+ return false;
+ }
+ if (!OPTS_FLAG(RELAXED_SWITCH)) {
+ if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
+ parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
+ ast_unref(operand);
+ return false;
+ }
+ }
+ }
+ else if (!strcmp(parser_tokval(parser), "default")) {
+ swcase.value = NULL;
+ if (!parser_next(parser)) {
+ ast_delete(switchnode);
+ parseerror(parser, "expected colon");
+ return false;
+ }
+ }
+
+ /* Now the colon and body */
+ if (parser->tok != ':') {
+ if (swcase.value) ast_unref(swcase.value);
+ ast_delete(switchnode);
+ parseerror(parser, "expected colon");
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ if (swcase.value) ast_unref(swcase.value);
+ ast_delete(switchnode);
+ parseerror(parser, "expected statements or case");
+ return false;
+ }
+ caseblock = ast_block_new(parser_ctx(parser));
+ if (!caseblock) {
+ if (swcase.value) ast_unref(swcase.value);
+ ast_delete(switchnode);
+ return false;
+ }
+ swcase.code = (ast_expression*)caseblock;
+ vec_push(switchnode->cases, swcase);
+ while (true) {
+ ast_expression *expr;
+ if (parser->tok == '}')
+ break;
+ if (parser->tok == TOKEN_KEYWORD) {
+ if (!strcmp(parser_tokval(parser), "case") ||
+ !strcmp(parser_tokval(parser), "default"))
+ {
+ break;
+ }
+ }
+ if (!parse_statement(parser, caseblock, &expr, true)) {
+ ast_delete(switchnode);
+ return false;
+ }
+ if (!expr)
+ continue;
+ if (!ast_block_add_expr(caseblock, expr)) {
+ ast_delete(switchnode);
+ return false;
+ }
+ }
+ }
+
+ parser_leaveblock(parser);
+
+ /* closing paren */
+ if (parser->tok != '}') {
+ ast_delete(switchnode);
+ parseerror(parser, "expected closing paren of case list");
+ return false;
+ }
+ if (!parser_next(parser)) {
+ ast_delete(switchnode);
+ parseerror(parser, "parse error after switch");
+ return false;
+ }
+ *out = (ast_expression*)switchnode;
+ return true;
+}
+
+static bool parse_goto(parser_t *parser, ast_expression **out)
+{
+ size_t i;
+ ast_goto *gt;
+
+ if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected label name after `goto`");
+ return false;
+ }
+
+ gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
+
+ for (i = 0; i < vec_size(parser->labels); ++i) {
+ if (!strcmp(parser->labels[i]->name, parser_tokval(parser))) {
+ ast_goto_set_label(gt, parser->labels[i]);
+ break;
+ }
+ }
+ if (i == vec_size(parser->labels))
+ vec_push(parser->gotos, gt);
+
+ if (!parser_next(parser) || parser->tok != ';') {
+ parseerror(parser, "semicolon expected after goto label");
+ return false;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after goto");
+ return false;
+ }
+
+ *out = (ast_expression*)gt;
+ return true;
+}
+
+static bool parse_skipwhite(parser_t *parser)
+{
+ do {
+ if (!parser_next(parser))
+ return false;
+ } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
+ return parser->tok < TOKEN_ERROR;
+}
+
+static bool parse_eol(parser_t *parser)
+{
+ if (!parse_skipwhite(parser))
+ return false;
+ return parser->tok == TOKEN_EOL;
+}
+
+static bool parse_pragma_do(parser_t *parser)
+{
+ if (!parser_next(parser) ||
+ parser->tok != TOKEN_IDENT ||
+ strcmp(parser_tokval(parser), "pragma"))
+ {
+ parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
+ return false;
+ }
+ if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
+ return false;
+ }
+
+ if (!strcmp(parser_tokval(parser), "noref")) {
+ if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
+ parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
+ return false;
+ }
+ parser->noref = !!parser_token(parser)->constval.i;
+ if (!parse_eol(parser)) {
+ parseerror(parser, "parse error after `noref` pragma");
+ return false;
+ }
+ }
+ else
+ {
+ (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
+ return false;
+ }
+
+ return true;
+}
+
+static bool parse_pragma(parser_t *parser)
+{
+ bool rv;
+ parser->lex->flags.preprocessing = true;
+ parser->lex->flags.mergelines = true;
+ rv = parse_pragma_do(parser);
+ if (parser->tok != TOKEN_EOL) {
+ parseerror(parser, "junk after pragma");
+ rv = false;
+ }
+ parser->lex->flags.preprocessing = false;
+ parser->lex->flags.mergelines = false;
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after pragma");
+ rv = false;
+ }
+ return rv;
+}
+
+static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
+{
+ bool noref, noreturn, is_static;
+ int cvq = CV_NONE;
+ ast_value *typevar = NULL;
+
+ *out = NULL;
+
+ if (parser->tok == TOKEN_IDENT)
+ typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
+
+ if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
+ {
+ /* local variable */
+ if (!block) {
+ parseerror(parser, "cannot declare a variable from here");
+ return false;
+ }
+ if (opts.standard == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
+ return false;
+ }
+ if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, false))
+ return false;
+ return true;
+ }
+ else if (parse_var_qualifiers(parser, !!block, &cvq, &noref, &noreturn, &is_static))
+ {
+ if (cvq == CV_WRONG)
+ return false;
+ return parse_variable(parser, block, true, cvq, NULL, noref, noreturn, is_static);
+ }
+ else if (parser->tok == TOKEN_KEYWORD)
+ {
+ if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
+ {
+ char ty[1024];
+ ast_value *tdef;
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after __builtin_debug_printtype");
+ return false;
+ }
+
+ if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
+ {
+ ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
+ con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
+ return false;
+ }
+ }
+ else
+ {
+ if (!parse_statement(parser, block, out, allow_cases))
+ return false;
+ if (!*out)
+ con_out("__builtin_debug_printtype: got no output node\n");
+ else
+ {
+ ast_type_to_string(*out, ty, sizeof(ty));
+ con_out("__builtin_debug_printtype: `%s`\n", ty);
+ }
+ }
+ return true;
+ }
+ else if (!strcmp(parser_tokval(parser), "return"))
+ {
+ return parse_return(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "if"))
+ {
+ return parse_if(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "while"))
+ {
+ return parse_while(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "do"))
+ {
+ return parse_dowhile(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "for"))
+ {
+ if (opts.standard == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
+ return false;
+ }
+ return parse_for(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "break"))
+ {
+ return parse_break_continue(parser, block, out, false);
+ }
+ else if (!strcmp(parser_tokval(parser), "continue"))
+ {
+ return parse_break_continue(parser, block, out, true);
+ }
+ else if (!strcmp(parser_tokval(parser), "switch"))
+ {
+ return parse_switch(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "case") ||
+ !strcmp(parser_tokval(parser), "default"))
+ {
+ if (!allow_cases) {
+ parseerror(parser, "unexpected 'case' label");
+ return false;
+ }
+ return true;
+ }
+ else if (!strcmp(parser_tokval(parser), "goto"))
+ {
+ return parse_goto(parser, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "typedef"))
+ {
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected type definition after 'typedef'");
+ return false;
+ }
+ return parse_typedef(parser);
+ }
+ parseerror(parser, "Unexpected keyword");
return false;
}
else if (parser->tok == '{')
{
ast_block *inner;
- inner = parser_parse_block(parser);
+ inner = parse_block(parser);
if (!inner)
return false;
*out = (ast_expression*)inner;
return true;
}
- else
- {
- ast_expression *exp = parser_expression(parser, false);
- if (!exp)
- return false;
- *out = exp;
- return true;
+ else if (parser->tok == ':')
+ {
+ size_t i;
+ ast_label *label;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected label name");
+ return false;
+ }
+ if (parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "label must be an identifier");
+ return false;
+ }
+ label = ast_label_new(parser_ctx(parser), parser_tokval(parser));
+ if (!label)
+ return false;
+ vec_push(parser->labels, label);
+ *out = (ast_expression*)label;
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after label");
+ return false;
+ }
+ for (i = 0; i < vec_size(parser->gotos); ++i) {
+ if (!strcmp(parser->gotos[i]->name, label->name)) {
+ ast_goto_set_label(parser->gotos[i], label);
+ vec_remove(parser->gotos, i, 1);
+ --i;
+ }
+ }
+ return true;
+ }
+ else if (parser->tok == ';')
+ {
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after empty statement");
+ return false;
+ }
+ return true;
+ }
+ else
+ {
+ ast_expression *exp = parse_expression(parser, false);
+ if (!exp)
+ return false;
+ *out = exp;
+ if (!ast_side_effects(exp)) {
+ if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
+ return false;
+ }
+ return true;
+ }
+}
+
+static bool parse_block_into(parser_t *parser, ast_block *block)
+{
+ bool retval = true;
+
+ parser_enterblock(parser);
+
+ if (!parser_next(parser)) { /* skip the '{' */
+ parseerror(parser, "expected function body");
+ goto cleanup;
+ }
+
+ while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
+ {
+ ast_expression *expr = NULL;
+ if (parser->tok == '}')
+ break;
+
+ if (!parse_statement(parser, block, &expr, false)) {
+ /* parseerror(parser, "parse error"); */
+ block = NULL;
+ goto cleanup;
+ }
+ if (!expr)
+ continue;
+ if (!ast_block_add_expr(block, expr)) {
+ ast_delete(block);
+ block = NULL;
+ goto cleanup;
+ }
+ }
+
+ if (parser->tok != '}') {
+ block = NULL;
+ } else {
+ (void)parser_next(parser);
+ }
+
+cleanup:
+ if (!parser_leaveblock(parser))
+ retval = false;
+ return retval && !!block;
+}
+
+static ast_block* parse_block(parser_t *parser)
+{
+ ast_block *block;
+ block = ast_block_new(parser_ctx(parser));
+ if (!block)
+ return NULL;
+ if (!parse_block_into(parser, block)) {
+ ast_block_delete(block);
+ return NULL;
+ }
+ return block;
+}
+
+static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
+{
+ if (parser->tok == '{') {
+ *out = (ast_expression*)parse_block(parser);
+ return !!*out;
+ }
+ return parse_statement(parser, NULL, out, false);
+}
+
+static bool create_vector_members(ast_value *var, ast_member **me)
+{
+ size_t i;
+ size_t len = strlen(var->name);
+
+ for (i = 0; i < 3; ++i) {
+ char *name = (char*)mem_a(len+3);
+ memcpy(name, var->name, len);
+ name[len+0] = '_';
+ name[len+1] = 'x'+i;
+ name[len+2] = 0;
+ me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
+ mem_d(name);
+ if (!me[i])
+ break;
+ }
+ if (i == 3)
+ return true;
+
+ /* unroll */
+ do { ast_member_delete(me[--i]); } while(i);
+ return false;
+}
+
+static bool parse_function_body(parser_t *parser, ast_value *var)
+{
+ ast_block *block = NULL;
+ ast_function *func;
+ ast_function *old;
+ size_t parami;
+
+ ast_expression *framenum = NULL;
+ ast_expression *nextthink = NULL;
+ /* None of the following have to be deleted */
+ ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
+ ast_expression *gbl_time = NULL, *gbl_self = NULL;
+ bool has_frame_think;
+
+ bool retval = true;
+
+ has_frame_think = false;
+ old = parser->function;
+
+ if (vec_size(parser->gotos) || vec_size(parser->labels)) {
+ parseerror(parser, "gotos/labels leaking");
+ return false;
+ }
+
+ if (var->expression.flags & AST_FLAG_VARIADIC) {
+ if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
+ "variadic function with implementation will not be able to access additional parameters"))
+ {
+ return false;
+ }
+ }
+
+ if (parser->tok == '[') {
+ /* got a frame definition: [ framenum, nextthink ]
+ * this translates to:
+ * self.frame = framenum;
+ * self.nextthink = time + 0.1;
+ * self.think = nextthink;
+ */
+ nextthink = NULL;
+
+ fld_think = parser_find_field(parser, "think");
+ fld_nextthink = parser_find_field(parser, "nextthink");
+ fld_frame = parser_find_field(parser, "frame");
+ if (!fld_think || !fld_nextthink || !fld_frame) {
+ parseerror(parser, "cannot use [frame,think] notation without the required fields");
+ parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
+ return false;
+ }
+ gbl_time = parser_find_global(parser, "time");
+ gbl_self = parser_find_global(parser, "self");
+ if (!gbl_time || !gbl_self) {
+ parseerror(parser, "cannot use [frame,think] notation without the required globals");
+ parseerror(parser, "please declare the following globals: `time`, `self`");
+ return false;
+ }
+
+ if (!parser_next(parser))
+ return false;
+
+ framenum = parse_expression_leave(parser, true);
+ if (!framenum) {
+ parseerror(parser, "expected a framenumber constant in[frame,think] notation");
+ return false;
+ }
+ if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
+ ast_unref(framenum);
+ parseerror(parser, "framenumber in [frame,think] notation must be a constant");
+ return false;
+ }
+
+ if (parser->tok != ',') {
+ ast_unref(framenum);
+ parseerror(parser, "expected comma after frame number in [frame,think] notation");
+ parseerror(parser, "Got a %i\n", parser->tok);
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ ast_unref(framenum);
+ return false;
+ }
+
+ if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
+ {
+ /* qc allows the use of not-yet-declared functions here
+ * - this automatically creates a prototype */
+ ast_value *thinkfunc;
+ ast_expression *functype = fld_think->expression.next;
+
+ thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
+ if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
+ ast_unref(framenum);
+ parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ ast_unref(framenum);
+ ast_delete(thinkfunc);
+ return false;
+ }
+
+ vec_push(parser->globals, (ast_expression*)thinkfunc);
+ util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
+ nextthink = (ast_expression*)thinkfunc;
+
+ } else {
+ nextthink = parse_expression_leave(parser, true);
+ if (!nextthink) {
+ ast_unref(framenum);
+ parseerror(parser, "expected a think-function in [frame,think] notation");
+ return false;
+ }
+ }
+
+ if (!ast_istype(nextthink, ast_value)) {
+ parseerror(parser, "think-function in [frame,think] notation must be a constant");
+ retval = false;
+ }
+
+ if (retval && parser->tok != ']') {
+ parseerror(parser, "expected closing `]` for [frame,think] notation");
+ retval = false;
+ }
+
+ if (retval && !parser_next(parser)) {
+ retval = false;
+ }
+
+ if (retval && parser->tok != '{') {
+ parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
+ retval = false;
+ }
+
+ if (!retval) {
+ ast_unref(nextthink);
+ ast_unref(framenum);
+ return false;
+ }
+
+ has_frame_think = true;
+ }
+
+ block = ast_block_new(parser_ctx(parser));
+ if (!block) {
+ parseerror(parser, "failed to allocate block");
+ if (has_frame_think) {
+ ast_unref(nextthink);
+ ast_unref(framenum);
+ }
+ return false;
+ }
+
+ if (has_frame_think) {
+ lex_ctx ctx;
+ ast_expression *self_frame;
+ ast_expression *self_nextthink;
+ ast_expression *self_think;
+ ast_expression *time_plus_1;
+ ast_store *store_frame;
+ ast_store *store_nextthink;
+ ast_store *store_think;
+
+ ctx = parser_ctx(parser);
+ self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
+ self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
+ self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
+
+ time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
+ gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
+
+ if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
+ if (self_frame) ast_delete(self_frame);
+ if (self_nextthink) ast_delete(self_nextthink);
+ if (self_think) ast_delete(self_think);
+ if (time_plus_1) ast_delete(time_plus_1);
+ retval = false;
+ }
+
+ if (retval)
+ {
+ store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
+ store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
+ store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
+
+ if (!store_frame) {
+ ast_delete(self_frame);
+ retval = false;
+ }
+ if (!store_nextthink) {
+ ast_delete(self_nextthink);
+ retval = false;
+ }
+ if (!store_think) {
+ ast_delete(self_think);
+ retval = false;
+ }
+ if (!retval) {
+ if (store_frame) ast_delete(store_frame);
+ if (store_nextthink) ast_delete(store_nextthink);
+ if (store_think) ast_delete(store_think);
+ retval = false;
+ }
+ if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
+ !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
+ !ast_block_add_expr(block, (ast_expression*)store_think))
+ {
+ retval = false;
+ }
+ }
+
+ if (!retval) {
+ parseerror(parser, "failed to generate code for [frame,think]");
+ ast_unref(nextthink);
+ ast_unref(framenum);
+ ast_delete(block);
+ return false;
+ }
+ }
+
+ parser_enterblock(parser);
+
+ for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
+ size_t e;
+ ast_value *param = var->expression.params[parami];
+ ast_member *me[3];
+
+ if (param->expression.vtype != TYPE_VECTOR &&
+ (param->expression.vtype != TYPE_FIELD ||
+ param->expression.next->expression.vtype != TYPE_VECTOR))
+ {
+ continue;
+ }
+
+ if (!create_vector_members(param, me)) {
+ ast_block_delete(block);
+ return false;
+ }
+
+ for (e = 0; e < 3; ++e) {
+ parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
+ ast_block_collect(block, (ast_expression*)me[e]);
+ }
+ }
+
+ func = ast_function_new(ast_ctx(var), var->name, var);
+ if (!func) {
+ parseerror(parser, "failed to allocate function for `%s`", var->name);
+ ast_block_delete(block);
+ goto enderr;
+ }
+ vec_push(parser->functions, func);
+
+ parser->function = func;
+ if (!parse_block_into(parser, block)) {
+ ast_block_delete(block);
+ goto enderrfn;
+ }
+
+ vec_push(func->blocks, block);
+
+ parser->function = old;
+ if (!parser_leaveblock(parser))
+ retval = false;
+ if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
+ parseerror(parser, "internal error: local scopes left");
+ retval = false;
+ }
+
+ if (parser->tok == ';')
+ return parser_next(parser);
+ else if (opts.standard == COMPILER_QCC)
+ parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
+ return retval;
+
+enderrfn:
+ vec_pop(parser->functions);
+ ast_function_delete(func);
+ var->constval.vfunc = NULL;
+
+enderr:
+ (void)!parser_leaveblock(parser);
+ parser->function = old;
+ return false;
+}
+
+static ast_expression *array_accessor_split(
+ parser_t *parser,
+ ast_value *array,
+ ast_value *index,
+ size_t middle,
+ ast_expression *left,
+ ast_expression *right
+ )
+{
+ ast_ifthen *ifthen;
+ ast_binary *cmp;
+
+ lex_ctx ctx = ast_ctx(array);
+
+ if (!left || !right) {
+ if (left) ast_delete(left);
+ if (right) ast_delete(right);
+ return NULL;
+ }
+
+ cmp = ast_binary_new(ctx, INSTR_LT,
+ (ast_expression*)index,
+ (ast_expression*)parser_const_float(parser, middle));
+ if (!cmp) {
+ ast_delete(left);
+ ast_delete(right);
+ parseerror(parser, "internal error: failed to create comparison for array setter");
+ return NULL;
+ }
+
+ ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
+ if (!ifthen) {
+ ast_delete(cmp); /* will delete left and right */
+ parseerror(parser, "internal error: failed to create conditional jump for array setter");
+ return NULL;
+ }
+
+ return (ast_expression*)ifthen;
+}
+
+static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
+{
+ lex_ctx ctx = ast_ctx(array);
+
+ if (from+1 == afterend) {
+ /* set this value */
+ ast_block *block;
+ ast_return *ret;
+ ast_array_index *subscript;
+ ast_store *st;
+ int assignop = type_store_instr[value->expression.vtype];
+
+ if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
+ assignop = INSTR_STORE_V;
+
+ subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
+ if (!subscript)
+ return NULL;
+
+ st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
+ if (!st) {
+ ast_delete(subscript);
+ return NULL;
+ }
+
+ block = ast_block_new(ctx);
+ if (!block) {
+ ast_delete(st);
+ return NULL;
+ }
+
+ if (!ast_block_add_expr(block, (ast_expression*)st)) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ ret = ast_return_new(ctx, NULL);
+ if (!ret) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ if (!ast_block_add_expr(block, (ast_expression*)ret)) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ return (ast_expression*)block;
+ } else {
+ ast_expression *left, *right;
+ size_t diff = afterend - from;
+ size_t middle = from + diff/2;
+ left = array_setter_node(parser, array, index, value, from, middle);
+ right = array_setter_node(parser, array, index, value, middle, afterend);
+ return array_accessor_split(parser, array, index, middle, left, right);
+ }
+}
+
+static ast_expression *array_field_setter_node(
+ parser_t *parser,
+ ast_value *array,
+ ast_value *entity,
+ ast_value *index,
+ ast_value *value,
+ size_t from,
+ size_t afterend)
+{
+ lex_ctx ctx = ast_ctx(array);
+
+ if (from+1 == afterend) {
+ /* set this value */
+ ast_block *block;
+ ast_return *ret;
+ ast_entfield *entfield;
+ ast_array_index *subscript;
+ ast_store *st;
+ int assignop = type_storep_instr[value->expression.vtype];
+
+ if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
+ assignop = INSTR_STOREP_V;
+
+ subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
+ if (!subscript)
+ return NULL;
+
+ entfield = ast_entfield_new_force(ctx,
+ (ast_expression*)entity,
+ (ast_expression*)subscript,
+ (ast_expression*)subscript);
+ if (!entfield) {
+ ast_delete(subscript);
+ return NULL;
+ }
+
+ st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
+ if (!st) {
+ ast_delete(entfield);
+ return NULL;
+ }
+
+ block = ast_block_new(ctx);
+ if (!block) {
+ ast_delete(st);
+ return NULL;
+ }
+
+ if (!ast_block_add_expr(block, (ast_expression*)st)) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ ret = ast_return_new(ctx, NULL);
+ if (!ret) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ if (!ast_block_add_expr(block, (ast_expression*)ret)) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ return (ast_expression*)block;
+ } else {
+ ast_expression *left, *right;
+ size_t diff = afterend - from;
+ size_t middle = from + diff/2;
+ left = array_field_setter_node(parser, array, entity, index, value, from, middle);
+ right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
+ return array_accessor_split(parser, array, index, middle, left, right);
+ }
+}
+
+static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
+{
+ lex_ctx ctx = ast_ctx(array);
+
+ if (from+1 == afterend) {
+ ast_return *ret;
+ ast_array_index *subscript;
+
+ subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
+ if (!subscript)
+ return NULL;
+
+ ret = ast_return_new(ctx, (ast_expression*)subscript);
+ if (!ret) {
+ ast_delete(subscript);
+ return NULL;
+ }
+
+ return (ast_expression*)ret;
+ } else {
+ ast_expression *left, *right;
+ size_t diff = afterend - from;
+ size_t middle = from + diff/2;
+ left = array_getter_node(parser, array, index, from, middle);
+ right = array_getter_node(parser, array, index, middle, afterend);
+ return array_accessor_split(parser, array, index, middle, left, right);
+ }
+}
+
+static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
+{
+ ast_function *func = NULL;
+ ast_value *fval = NULL;
+ ast_block *body = NULL;
+
+ fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
+ if (!fval) {
+ parseerror(parser, "failed to create accessor function value");
+ return false;
+ }
+
+ func = ast_function_new(ast_ctx(array), funcname, fval);
+ if (!func) {
+ ast_delete(fval);
+ parseerror(parser, "failed to create accessor function node");
+ return false;
+ }
+
+ body = ast_block_new(ast_ctx(array));
+ if (!body) {
+ parseerror(parser, "failed to create block for array accessor");
+ ast_delete(fval);
+ ast_delete(func);
+ return false;
+ }
+
+ vec_push(func->blocks, body);
+ *out = fval;
+
+ vec_push(parser->accessors, fval);
+
+ return true;
+}
+
+static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
+{
+ ast_expression *root = NULL;
+ ast_value *index = NULL;
+ ast_value *value = NULL;
+ ast_function *func;
+ ast_value *fval;
+
+ if (!ast_istype(array->expression.next, ast_value)) {
+ parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
+ return false;
+ }
+
+ if (!parser_create_array_accessor(parser, array, funcname, &fval))
+ return false;
+ func = fval->constval.vfunc;
+ fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
+
+ index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
+ value = ast_value_copy((ast_value*)array->expression.next);
+
+ if (!index || !value) {
+ parseerror(parser, "failed to create locals for array accessor");
+ goto cleanup;
+ }
+ (void)!ast_value_set_name(value, "value"); /* not important */
+ vec_push(fval->expression.params, index);
+ vec_push(fval->expression.params, value);
+
+ root = array_setter_node(parser, array, index, value, 0, array->expression.count);
+ if (!root) {
+ parseerror(parser, "failed to build accessor search tree");
+ goto cleanup;
+ }
+
+ array->setter = fval;
+ return ast_block_add_expr(func->blocks[0], root);
+cleanup:
+ if (index) ast_delete(index);
+ if (value) ast_delete(value);
+ if (root) ast_delete(root);
+ ast_delete(func);
+ ast_delete(fval);
+ return false;
+}
+
+static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
+{
+ ast_expression *root = NULL;
+ ast_value *entity = NULL;
+ ast_value *index = NULL;
+ ast_value *value = NULL;
+ ast_function *func;
+ ast_value *fval;
+
+ if (!ast_istype(array->expression.next, ast_value)) {
+ parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
+ return false;
+ }
+
+ if (!parser_create_array_accessor(parser, array, funcname, &fval))
+ return false;
+ func = fval->constval.vfunc;
+ fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
+
+ entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
+ index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
+ value = ast_value_copy((ast_value*)array->expression.next);
+ if (!entity || !index || !value) {
+ parseerror(parser, "failed to create locals for array accessor");
+ goto cleanup;
+ }
+ (void)!ast_value_set_name(value, "value"); /* not important */
+ vec_push(fval->expression.params, entity);
+ vec_push(fval->expression.params, index);
+ vec_push(fval->expression.params, value);
+
+ root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
+ if (!root) {
+ parseerror(parser, "failed to build accessor search tree");
+ goto cleanup;
+ }
+
+ array->setter = fval;
+ return ast_block_add_expr(func->blocks[0], root);
+cleanup:
+ if (entity) ast_delete(entity);
+ if (index) ast_delete(index);
+ if (value) ast_delete(value);
+ if (root) ast_delete(root);
+ ast_delete(func);
+ ast_delete(fval);
+ return false;
+}
+
+static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
+{
+ ast_expression *root = NULL;
+ ast_value *index = NULL;
+ ast_value *fval;
+ ast_function *func;
+
+ /* NOTE: checking array->expression.next rather than elemtype since
+ * for fields elemtype is a temporary fieldtype.
+ */
+ if (!ast_istype(array->expression.next, ast_value)) {
+ parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
+ return false;
+ }
+
+ if (!parser_create_array_accessor(parser, array, funcname, &fval))
+ return false;
+ func = fval->constval.vfunc;
+ fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
+
+ index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
+
+ if (!index) {
+ parseerror(parser, "failed to create locals for array accessor");
+ goto cleanup;
+ }
+ vec_push(fval->expression.params, index);
+
+ root = array_getter_node(parser, array, index, 0, array->expression.count);
+ if (!root) {
+ parseerror(parser, "failed to build accessor search tree");
+ goto cleanup;
+ }
+
+ array->getter = fval;
+ return ast_block_add_expr(func->blocks[0], root);
+cleanup:
+ if (index) ast_delete(index);
+ if (root) ast_delete(root);
+ ast_delete(func);
+ ast_delete(fval);
+ return false;
+}
+
+static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
+static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
+{
+ lex_ctx ctx;
+ size_t i;
+ ast_value **params;
+ ast_value *param;
+ ast_value *fval;
+ bool first = true;
+ bool variadic = false;
+
+ ctx = parser_ctx(parser);
+
+ /* for the sake of less code we parse-in in this function */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected parameter list");
+ return NULL;
+ }
+
+ params = NULL;
+
+ /* parse variables until we hit a closing paren */
+ while (parser->tok != ')') {
+ if (!first) {
+ /* there must be commas between them */
+ if (parser->tok != ',') {
+ parseerror(parser, "expected comma or end of parameter list");
+ goto on_error;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected parameter");
+ goto on_error;
+ }
+ }
+ first = false;
+
+ if (parser->tok == TOKEN_DOTS) {
+ /* '...' indicates a varargs function */
+ variadic = true;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected parameter");
+ return NULL;
+ }
+ if (parser->tok != ')') {
+ parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
+ goto on_error;
+ }
+ }
+ else
+ {
+ /* for anything else just parse a typename */
+ param = parse_typename(parser, NULL, NULL);
+ if (!param)
+ goto on_error;
+ vec_push(params, param);
+ if (param->expression.vtype >= TYPE_VARIANT) {
+ char tname[1024]; /* typename is reserved in C++ */
+ ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
+ parseerror(parser, "type not supported as part of a parameter list: %s", tname);
+ goto on_error;
+ }
+ }
+ }
+
+ if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
+ vec_free(params);
+
+ /* sanity check */
+ if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
+ (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
+
+ /* parse-out */
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after typename");
+ goto on_error;
}
+
+ /* now turn 'var' into a function type */
+ fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
+ fval->expression.next = (ast_expression*)var;
+ if (variadic)
+ fval->expression.flags |= AST_FLAG_VARIADIC;
+ var = fval;
+
+ var->expression.params = params;
+ params = NULL;
+
+ return var;
+
+on_error:
+ ast_delete(var);
+ for (i = 0; i < vec_size(params); ++i)
+ ast_delete(params[i]);
+ vec_free(params);
+ return NULL;
}
-static void parser_pop_local(parser_t *parser)
+static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
{
- parser->locals_count--;
- mem_d(parser->locals[parser->locals_count].name);
+ ast_expression *cexp;
+ ast_value *cval, *tmp;
+ lex_ctx ctx;
+
+ ctx = parser_ctx(parser);
+
+ if (!parser_next(parser)) {
+ ast_delete(var);
+ parseerror(parser, "expected array-size");
+ return NULL;
+ }
+
+ cexp = parse_expression_leave(parser, true);
+
+ if (!cexp || !ast_istype(cexp, ast_value)) {
+ if (cexp)
+ ast_unref(cexp);
+ ast_delete(var);
+ parseerror(parser, "expected array-size as constant positive integer");
+ return NULL;
+ }
+ cval = (ast_value*)cexp;
+
+ tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
+ tmp->expression.next = (ast_expression*)var;
+ var = tmp;
+
+ if (cval->expression.vtype == TYPE_INTEGER)
+ tmp->expression.count = cval->constval.vint;
+ else if (cval->expression.vtype == TYPE_FLOAT)
+ tmp->expression.count = cval->constval.vfloat;
+ else {
+ ast_unref(cexp);
+ ast_delete(var);
+ parseerror(parser, "array-size must be a positive integer constant");
+ return NULL;
+ }
+ ast_unref(cexp);
+
+ if (parser->tok != ']') {
+ ast_delete(var);
+ parseerror(parser, "expected ']' after array-size");
+ return NULL;
+ }
+ if (!parser_next(parser)) {
+ ast_delete(var);
+ parseerror(parser, "error after parsing array size");
+ return NULL;
+ }
+ return var;
}
-static bool parser_parse_block_into(parser_t *parser, ast_block *block)
+/* Parse a complete typename.
+ * for single-variables (ie. function parameters or typedefs) storebase should be NULL
+ * but when parsing variables separated by comma
+ * 'storebase' should point to where the base-type should be kept.
+ * The base type makes up every bit of type information which comes *before* the
+ * variable name.
+ *
+ * The following will be parsed in its entirety:
+ * void() foo()
+ * The 'basetype' in this case is 'void()'
+ * and if there's a comma after it, say:
+ * void() foo(), bar
+ * then the type-information 'void()' can be stored in 'storebase'
+ */
+static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
{
- size_t oldblocklocal;
+ ast_value *var, *tmp;
+ lex_ctx ctx;
- oldblocklocal = parser->blocklocal;
- parser->blocklocal = parser->locals_count;
+ const char *name = NULL;
+ bool isfield = false;
+ bool wasarray = false;
+ size_t morefields = 0;
- if (!parser_next(parser)) { /* skip the '{' */
- parseerror(parser, "expected function body");
- goto cleanup;
+ ctx = parser_ctx(parser);
+
+ /* types may start with a dot */
+ if (parser->tok == '.') {
+ isfield = true;
+ /* if we parsed a dot we need a typename now */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected typename for field definition");
+ return NULL;
+ }
+
+ /* Further dots are handled seperately because they won't be part of the
+ * basetype
+ */
+ while (parser->tok == '.') {
+ ++morefields;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected typename for field definition");
+ return NULL;
+ }
+ }
+ }
+ if (parser->tok == TOKEN_IDENT)
+ cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
+ if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
+ parseerror(parser, "expected typename");
+ return NULL;
}
- while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
- {
- ast_expression *expr;
- if (parser->tok == '}')
- break;
+ /* generate the basic type value */
+ if (cached_typedef) {
+ var = ast_value_copy(cached_typedef);
+ ast_value_set_name(var, "<type(from_def)>");
+ } else
+ var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
- if (!parser_parse_statement(parser, block, &expr)) {
- parseerror(parser, "parse error");
- block = NULL;
- goto cleanup;
+ for (; morefields; --morefields) {
+ tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
+ tmp->expression.next = (ast_expression*)var;
+ var = tmp;
+ }
+
+ /* do not yet turn into a field - remember:
+ * .void() foo; is a field too
+ * .void()() foo; is a function
+ */
+
+ /* parse on */
+ if (!parser_next(parser)) {
+ ast_delete(var);
+ parseerror(parser, "parse error after typename");
+ return NULL;
+ }
+
+ /* an opening paren now starts the parameter-list of a function
+ * this is where original-QC has parameter lists.
+ * We allow a single parameter list here.
+ * Much like fteqcc we don't allow `float()() x`
+ */
+ if (parser->tok == '(') {
+ var = parse_parameter_list(parser, var);
+ if (!var)
+ return NULL;
+ }
+
+ /* store the base if requested */
+ if (storebase) {
+ *storebase = ast_value_copy(var);
+ if (isfield) {
+ tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
+ tmp->expression.next = (ast_expression*)*storebase;
+ *storebase = tmp;
}
- if (!expr)
- continue;
- if (!ast_block_exprs_add(block, expr)) {
- ast_delete(expr);
- block = NULL;
- goto cleanup;
+ }
+
+ /* there may be a name now */
+ if (parser->tok == TOKEN_IDENT) {
+ name = util_strdup(parser_tokval(parser));
+ /* parse on */
+ if (!parser_next(parser)) {
+ ast_delete(var);
+ parseerror(parser, "error after variable or field declaration");
+ return NULL;
}
}
- if (parser->tok != '}') {
- block = NULL;
- } else {
- (void)parser_next(parser);
+ /* now this may be an array */
+ if (parser->tok == '[') {
+ wasarray = true;
+ var = parse_arraysize(parser, var);
+ if (!var)
+ return NULL;
}
-cleanup:
- while (parser->locals_count > parser->blocklocal)
- parser_pop_local(parser);
- parser->blocklocal = oldblocklocal;
- return !!block;
-}
+ /* This is the point where we can turn it into a field */
+ if (isfield) {
+ /* turn it into a field if desired */
+ tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
+ tmp->expression.next = (ast_expression*)var;
+ var = tmp;
+ }
-static ast_block* parser_parse_block(parser_t *parser)
-{
- ast_block *block;
- block = ast_block_new(parser_ctx(parser));
- if (!block)
- return NULL;
- if (!parser_parse_block_into(parser, block)) {
- ast_block_delete(block);
- return NULL;
+ /* now there may be function parens again */
+ if (parser->tok == '(' && opts.standard == COMPILER_QCC)
+ parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
+ if (parser->tok == '(' && wasarray)
+ parseerror(parser, "arrays as part of a return type is not supported");
+ while (parser->tok == '(') {
+ var = parse_parameter_list(parser, var);
+ if (!var) {
+ if (name)
+ mem_d((void*)name);
+ ast_delete(var);
+ return NULL;
+ }
}
- return block;
-}
-static ast_expression* parser_parse_statement_or_block(parser_t *parser)
-{
- ast_expression *expr = NULL;
- if (parser->tok == '{')
- return (ast_expression*)parser_parse_block(parser);
- if (!parser_parse_statement(parser, NULL, &expr))
- return NULL;
- return expr;
+ /* finally name it */
+ if (name) {
+ if (!ast_value_set_name(var, name)) {
+ ast_delete(var);
+ parseerror(parser, "internal error: failed to set name");
+ return NULL;
+ }
+ /* free the name, ast_value_set_name duplicates */
+ mem_d((void*)name);
+ }
+
+ return var;
}
-static bool create_vector_members(parser_t *parser, ast_value *var,
- varentry_t *vx, varentry_t *vy, varentry_t *vz)
+static bool parse_typedef(parser_t *parser)
{
- size_t len = strlen(var->name);
- vx->var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, 0);
- if (!vx->var) {
- parseerror(parser, "failed to create vector members (out of memory)");
- return false;
- }
+ ast_value *typevar, *oldtype;
+ ast_expression *old;
- vy->var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, 1);
- if (!vy->var) {
- ast_delete(vx->var);
- parseerror(parser, "failed to create vector members (out of memory)");
+ typevar = parse_typename(parser, NULL, NULL);
+
+ if (!typevar)
return false;
- }
- vz->var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, 2);
- if (!vz->var) {
- ast_delete(vy->var);
- ast_delete(vx->var);
- parseerror(parser, "failed to create vector members (out of memory)");
+ if ( (old = parser_find_var(parser, typevar->name)) ) {
+ parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
+ " -> `%s` has been declared here: %s:%i",
+ typevar->name, ast_ctx(old).file, ast_ctx(old).line);
+ ast_delete(typevar);
return false;
}
- if ( !(vx->name = (char*)mem_a(len+3)) ) {
- ast_delete(vz->var);
- ast_delete(vy->var);
- ast_delete(vx->var);
- parseerror(parser, "failed to create vector members (out of memory)");
+ if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
+ parseerror(parser, "type `%s` has already been declared here: %s:%i",
+ typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
+ ast_delete(typevar);
return false;
}
- if ( !(vy->name = (char*)mem_a(len+3)) ) {
- mem_d(vx->name);
- ast_delete(vz->var);
- ast_delete(vy->var);
- ast_delete(vx->var);
- parseerror(parser, "failed to create vector members (out of memory)");
+
+ vec_push(parser->_typedefs, typevar);
+ util_htset(vec_last(parser->typedefs), typevar->name, typevar);
+
+ if (parser->tok != ';') {
+ parseerror(parser, "expected semicolon after typedef");
return false;
}
- if ( !(vz->name = (char*)mem_a(len+3)) ) {
- mem_d(vy->name);
- mem_d(vx->name);
- ast_delete(vz->var);
- ast_delete(vy->var);
- ast_delete(vx->var);
- parseerror(parser, "failed to create vector members (out of memory)");
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after typedef");
return false;
}
- memcpy(vx->name, var->name, len);
- memcpy(vy->name, var->name, len);
- memcpy(vz->name, var->name, len);
- vx->name[len] = vy->name[len] = vz->name[len] = '_';
- vx->name[len+1] = 'x';
- vy->name[len+1] = 'y';
- vz->name[len+1] = 'z';
- vx->name[len+2] = vy->name[len+2] = vz->name[len+2] = 0;
return true;
}
-static bool parser_variable(parser_t *parser, ast_block *localblock)
+static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool noreturn, bool is_static)
{
- bool isfunc = false;
- ast_function *func = NULL;
- lex_ctx ctx;
- ast_value *var;
- varentry_t varent;
- ast_expression *olddecl;
-
- bool hadproto;
- bool isparam;
-
- int basetype = parser_token(parser)->constval.t;
+ ast_value *var;
+ ast_value *proto;
+ ast_expression *old;
+ bool was_end;
+ size_t i;
+
+ ast_value *basetype = NULL;
+ bool retval = true;
+ bool isparam = false;
+ bool isvector = false;
+ bool cleanvar = true;
+ bool wasarray = false;
+
+ ast_member *me[3];
+
+ if (!localblock && is_static)
+ parseerror(parser, "`static` qualifier is not supported in global scope");
+
+ /* get the first complete variable */
+ var = parse_typename(parser, &basetype, cached_typedef);
+ if (!var) {
+ if (basetype)
+ ast_delete(basetype);
+ return false;
+ }
- while (true)
- {
- hadproto = false;
+ while (true) {
+ proto = NULL;
+ wasarray = false;
- if (!parser_next(parser)) { /* skip basetype or comma */
- parseerror(parser, "expected variable declaration");
- return false;
+ /* Part 0: finish the type */
+ if (parser->tok == '(') {
+ if (opts.standard == COMPILER_QCC)
+ parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
+ var = parse_parameter_list(parser, var);
+ if (!var) {
+ retval = false;
+ goto cleanup;
+ }
}
-
- olddecl = NULL;
- isfunc = false;
- func = NULL;
- isparam = false;
- ctx = parser_ctx(parser);
- var = parser_parse_type(parser, basetype, &isfunc);
-
- if (!var)
- return false;
-
- if (parser->tok != TOKEN_IDENT) {
- parseerror(parser, "expected variable name\n");
- return false;
+ /* we only allow 1-dimensional arrays */
+ if (parser->tok == '[') {
+ wasarray = true;
+ var = parse_arraysize(parser, var);
+ if (!var) {
+ retval = false;
+ goto cleanup;
+ }
}
-
- if (!isfunc) {
- if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
- ast_value_delete(var);
- parseerror(parser, "global `%s` already declared here: %s:%i",
- parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- return false;
+ if (parser->tok == '(' && wasarray) {
+ parseerror(parser, "arrays as part of a return type is not supported");
+ /* we'll still parse the type completely for now */
+ }
+ /* for functions returning functions */
+ while (parser->tok == '(') {
+ if (opts.standard == COMPILER_QCC)
+ parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
+ var = parse_parameter_list(parser, var);
+ if (!var) {
+ retval = false;
+ goto cleanup;
}
+ }
- if (localblock) {
- olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal, &isparam);
- if (opts_standard == COMPILER_GMQCC)
+ var->cvq = qualifier;
+ /* in a noref section we simply bump the usecount */
+ if (noref || parser->noref)
+ var->uses++;
+ if (noreturn)
+ var->expression.flags |= AST_FLAG_NORETURN;
+
+ /* Part 1:
+ * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
+ * Also: if there was a prototype, `var` will be deleted and set to `proto` which
+ * is then filled with the previous definition and the parameter-names replaced.
+ */
+ if (!localblock) {
+ /* Deal with end_sys_ vars */
+ was_end = false;
+ if (!strcmp(var->name, "end_sys_globals")) {
+ var->uses++;
+ parser->crc_globals = vec_size(parser->globals);
+ was_end = true;
+ }
+ else if (!strcmp(var->name, "end_sys_fields")) {
+ var->uses++;
+ parser->crc_fields = vec_size(parser->fields);
+ was_end = true;
+ }
+ if (was_end && var->expression.vtype == TYPE_FIELD) {
+ if (parsewarning(parser, WARN_END_SYS_FIELDS,
+ "global '%s' hint should not be a field",
+ parser_tokval(parser)))
{
- if (olddecl)
- {
- if (!isparam) {
- ast_value_delete(var);
- parseerror(parser, "local `%s` already declared here: %s:%i",
- parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- return false;
- }
- }
+ retval = false;
+ goto cleanup;
+ }
+ }
- if( (!isparam && olddecl) || (olddecl = parser_find_local(parser, parser_tokval(parser), 0, &isparam)) )
+ if (!nofields && var->expression.vtype == TYPE_FIELD)
+ {
+ /* deal with field declarations */
+ old = parser_find_field(parser, var->name);
+ if (old) {
+ if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
{
- if (parsewarning(parser, WARN_LOCAL_SHADOWS,
- "local `%s` is shadowing a parameter", parser_tokval(parser)))
- {
- ast_value_delete(var);
- parseerror(parser, "local `%s` already declared here: %s:%i",
- parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- return false;
- }
+ retval = false;
+ goto cleanup;
+ }
+ ast_delete(var);
+ var = NULL;
+ goto skipvar;
+ /*
+ parseerror(parser, "field `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ */
+ }
+ if (opts.standard == COMPILER_QCC &&
+ (old = parser_find_global(parser, var->name)))
+ {
+ parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
+ parseerror(parser, "field `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ }
+ }
+ else
+ {
+ /* deal with other globals */
+ old = parser_find_global(parser, var->name);
+ if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
+ {
+ /* This is a function which had a prototype */
+ if (!ast_istype(old, ast_value)) {
+ parseerror(parser, "internal error: prototype is not an ast_value");
+ retval = false;
+ goto cleanup;
}
+ proto = (ast_value*)old;
+ if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
+ parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
+ proto->name,
+ ast_ctx(proto).file, ast_ctx(proto).line);
+ retval = false;
+ goto cleanup;
+ }
+ /* we need the new parameter-names */
+ for (i = 0; i < vec_size(proto->expression.params); ++i)
+ ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
+ ast_delete(var);
+ var = proto;
}
else
{
- if (olddecl)
- {
- ast_value_delete(var);
- if (isparam &&
- parsewarning(parser, WARN_LOCAL_SHADOWS,
- "a parameter is shadowing local `%s`", parser_tokval(parser)))
- {
- return false;
- }
- else if (!isparam)
- {
- parseerror(parser, "local `%s` already declared here: %s:%i",
- parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
- return false;
+ /* other globals */
+ if (old) {
+ if (opts.standard == COMPILER_GMQCC) {
+ parseerror(parser, "global `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ } else {
+ if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
+ "global `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, ast_ctx(old).line))
+ {
+ retval = false;
+ goto cleanup;
+ }
+ proto = (ast_value*)old;
+ if (!ast_istype(old, ast_value)) {
+ parseerror(parser, "internal error: not an ast_value");
+ retval = false;
+ proto = NULL;
+ goto cleanup;
+ }
+ ast_delete(var);
+ var = proto;
}
- goto nextvar;
+ }
+ if (opts.standard == COMPILER_QCC &&
+ (old = parser_find_field(parser, var->name)))
+ {
+ parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
+ parseerror(parser, "global `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
}
}
}
}
-
- if (!ast_value_set_name(var, parser_tokval(parser))) {
- parseerror(parser, "failed to set variable name\n");
- ast_value_delete(var);
- return false;
+ else /* it's not a global */
+ {
+ old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
+ if (old && !isparam) {
+ parseerror(parser, "local `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ }
+ old = parser_find_local(parser, var->name, 0, &isparam);
+ if (old && isparam) {
+ if (parsewarning(parser, WARN_LOCAL_SHADOWS,
+ "local `%s` is shadowing a parameter", var->name))
+ {
+ parseerror(parser, "local `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ }
+ if (opts.standard != COMPILER_GMQCC) {
+ ast_delete(var);
+ var = NULL;
+ goto skipvar;
+ }
+ }
}
- if (isfunc) {
- /* a function was defined */
- ast_value *fval;
- ast_value *proto = NULL;
- bool dummy;
-
- if (!localblock)
- olddecl = parser_find_global(parser, parser_tokval(parser));
- else
- olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal, &dummy);
-
- if (olddecl) {
- /* we had a prototype */
- if (!ast_istype(olddecl, ast_value)) {
- /* theoretically not possible you think?
- * well:
- * vector v;
- * void() v_x = {}
- * got it?
- */
- parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
- parser_tokval(parser));
- ast_value_delete(var);
- return false;
+ /* Part 2:
+ * Create the global/local, and deal with vector types.
+ */
+ if (!proto) {
+ if (var->expression.vtype == TYPE_VECTOR)
+ isvector = true;
+ else if (var->expression.vtype == TYPE_FIELD &&
+ var->expression.next->expression.vtype == TYPE_VECTOR)
+ isvector = true;
+
+ if (isvector) {
+ if (!create_vector_members(var, me)) {
+ retval = false;
+ goto cleanup;
}
-
- proto = (ast_value*)olddecl;
}
- /* turn var into a value of TYPE_FUNCTION, with the old var
- * as return type
- */
- fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
- func = ast_function_new(ctx, var->name, fval);
- if (!fval || !func) {
- ast_value_delete(var);
- if (fval) ast_value_delete(fval);
- if (func) ast_function_delete(func);
- return false;
- }
+ if (!localblock) {
+ /* deal with global variables, fields, functions */
+ if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
+ var->isfield = true;
+ vec_push(parser->fields, (ast_expression*)var);
+ util_htset(parser->htfields, var->name, var);
+ if (isvector) {
+ for (i = 0; i < 3; ++i) {
+ vec_push(parser->fields, (ast_expression*)me[i]);
+ util_htset(parser->htfields, me[i]->name, me[i]);
+ }
+ }
+ }
+ else {
+ vec_push(parser->globals, (ast_expression*)var);
+ util_htset(parser->htglobals, var->name, var);
+ if (isvector) {
+ for (i = 0; i < 3; ++i) {
+ vec_push(parser->globals, (ast_expression*)me[i]);
+ util_htset(parser->htglobals, me[i]->name, me[i]);
+ }
+ }
+ }
+ } else {
+ if (is_static) {
+ /* a static adds itself to be generated like any other global
+ * but is added to the local namespace instead
+ */
+ char *defname = NULL;
+ size_t prefix_len, ln;
- fval->expression.next = (ast_expression*)var;
- MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
+ ln = strlen(parser->function->name);
+ vec_append(defname, ln, parser->function->name);
- /* we compare the type late here, but it's easier than
- * messing with the parameter-vector etc. earlier
- */
- if (proto) {
- size_t param;
- if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
- parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
- proto->name,
- ast_ctx(proto).file, ast_ctx(proto).line);
- ast_function_delete(func);
- ast_value_delete(fval);
- return false;
- }
- /* copy over the parameter names */
- for (param = 0; param < fval->expression.params_count; ++param)
- ast_value_set_name(proto->expression.params[param], fval->expression.params[param]->name);
+ vec_append(defname, 2, "::");
+ /* remember the length up to here */
+ prefix_len = vec_size(defname);
- /* now ditch the rest of the new data */
- ast_function_delete(func);
- ast_value_delete(fval);
- fval = proto;
- func = proto->constval.vfunc;
- hadproto = true;
- }
- else
- {
- if (!parser_t_functions_add(parser, func)) {
- ast_function_delete(func);
- ast_value_delete(fval);
- return false;
- }
- }
+ /* Add it to the local scope */
+ util_htset(vec_last(parser->variables), var->name, (void*)var);
+ /* now rename the global */
+ ln = strlen(var->name);
+ vec_append(defname, ln, var->name);
+ ast_value_set_name(var, defname);
- var = fval;
- }
+ /* push it to the to-be-generated globals */
+ vec_push(parser->globals, (ast_expression*)var);
- if (!hadproto) {
- varent.name = util_strdup(var->name);
- varent.var = (ast_expression*)var;
- if (var->expression.vtype == TYPE_VECTOR)
- {
- varentry_t vx, vy, vz;
- if (!create_vector_members(parser, var, &vx, &vy, &vz)) {
- ast_delete(var);
- return false;
- }
+ /* same game for the vector members */
+ if (isvector) {
+ for (i = 0; i < 3; ++i) {
+ util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
+
+ vec_shrinkto(defname, prefix_len);
+ ln = strlen(me[i]->name);
+ vec_append(defname, ln, me[i]->name);
+ ast_member_set_name(me[i], defname);
- if (!localblock) {
- (void)!parser_t_globals_add(parser, varent);
- (void)!parser_t_globals_add(parser, vx);
- (void)!parser_t_globals_add(parser, vy);
- (void)!parser_t_globals_add(parser, vz);
+ vec_push(parser->globals, (ast_expression*)me[i]);
+ }
+ }
+ vec_free(defname);
} else {
- (void)!parser_t_locals_add(parser, varent);
- (void)!parser_t_locals_add(parser, vx);
- (void)!parser_t_locals_add(parser, vy);
- (void)!parser_t_locals_add(parser, vz);
- if (!ast_block_locals_add(localblock, var) ||
- !ast_block_collect(localblock, vx.var) ||
- !ast_block_collect(localblock, vy.var) ||
- !ast_block_collect(localblock, vz.var))
- {
- parser_pop_local(parser);
- parser_pop_local(parser);
- parser_pop_local(parser);
- parser_pop_local(parser);
- ast_value_delete(var);
- return false;
+ vec_push(localblock->locals, var);
+ parser_addlocal(parser, var->name, (ast_expression*)var);
+ if (isvector) {
+ for (i = 0; i < 3; ++i) {
+ parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
+ ast_block_collect(localblock, (ast_expression*)me[i]);
+ }
}
}
}
- else
- {
- if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
- ( localblock && !parser_t_locals_add(parser, varent)) )
- {
- ast_value_delete(var);
- return false;
- }
- if (localblock && !ast_block_locals_add(localblock, var))
- {
- parser_pop_local(parser);
- ast_value_delete(var);
- return false;
- }
+ }
+ me[0] = me[1] = me[2] = NULL;
+ cleanvar = false;
+ /* Part 2.2
+ * deal with arrays
+ */
+ if (var->expression.vtype == TYPE_ARRAY) {
+ char name[1024];
+ snprintf(name, sizeof(name), "%s##SET", var->name);
+ if (!parser_create_array_setter(parser, var, name))
+ goto cleanup;
+ snprintf(name, sizeof(name), "%s##GET", var->name);
+ if (!parser_create_array_getter(parser, var, var->expression.next, name))
+ goto cleanup;
+ }
+ else if (!localblock && !nofields &&
+ var->expression.vtype == TYPE_FIELD &&
+ var->expression.next->expression.vtype == TYPE_ARRAY)
+ {
+ char name[1024];
+ ast_expression *telem;
+ ast_value *tfield;
+ ast_value *array = (ast_value*)var->expression.next;
+
+ if (!ast_istype(var->expression.next, ast_value)) {
+ parseerror(parser, "internal error: field element type must be an ast_value");
+ goto cleanup;
+ }
+
+ snprintf(name, sizeof(name), "%s##SETF", var->name);
+ if (!parser_create_array_field_setter(parser, array, name))
+ goto cleanup;
+
+ telem = ast_type_copy(ast_ctx(var), array->expression.next);
+ tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
+ tfield->expression.next = telem;
+ snprintf(name, sizeof(name), "%s##GETFP", var->name);
+ if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
+ ast_delete(tfield);
+ goto cleanup;
}
+ ast_delete(tfield);
}
-nextvar:
- if (!parser_next(parser)) {
- ast_value_delete(var);
- return false;
+skipvar:
+ if (parser->tok == ';') {
+ ast_delete(basetype);
+ if (!parser_next(parser)) {
+ parseerror(parser, "error after variable declaration");
+ return false;
+ }
+ return true;
+ }
+
+ if (parser->tok == ',')
+ goto another;
+
+ /*
+ if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
+ */
+ if (!var) {
+ parseerror(parser, "missing comma or semicolon while parsing variables");
+ break;
+ }
+
+ if (localblock && opts.standard == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
+ "initializing expression turns variable `%s` into a constant in this standard",
+ var->name) )
+ {
+ break;
+ }
}
- if (parser->tok == ';') {
- if (!parser_next(parser))
- return parser->tok == TOKEN_EOF;
- return true;
- }
+ if (parser->tok != '{') {
+ if (parser->tok != '=') {
+ parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
+ break;
+ }
- if (parser->tok == ',') {
- /* another var */
- continue;
+ if (!parser_next(parser)) {
+ parseerror(parser, "error parsing initializer");
+ break;
+ }
}
-
- if (parser->tok != '=') {
- parseerror(parser, "expected '=' or ';'");
- return false;
+ else if (opts.standard == COMPILER_QCC) {
+ parseerror(parser, "expected '=' before function body in this standard");
}
- if (!parser_next(parser))
- return false;
-
if (parser->tok == '#') {
+ ast_function *func = NULL;
+
if (localblock) {
parseerror(parser, "cannot declare builtins within functions");
- return false;
+ break;
}
- if (!isfunc || !func) {
+ if (var->expression.vtype != TYPE_FUNCTION) {
parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
- return false;
+ break;
}
if (!parser_next(parser)) {
parseerror(parser, "expected builtin number");
- return false;
+ break;
}
if (parser->tok != TOKEN_INTCONST) {
parseerror(parser, "builtin number must be an integer constant");
- return false;
- }
- if (parser_token(parser)->constval.i <= 0) {
- parseerror(parser, "builtin number must be positive integer greater than zero");
- return false;
+ break;
}
-
- func->builtin = -parser_token(parser)->constval.i;
-
- if (!parser_next(parser))
- return false;
- } else if (parser->tok == '{') {
- /* function body */
- ast_block *block;
- size_t parami;
- ast_function *old = parser->function;
-
- if (localblock) {
- parseerror(parser, "cannot declare functions within functions");
- return false;
+ if (parser_token(parser)->constval.i < 0) {
+ parseerror(parser, "builtin number must be an integer greater than zero");
+ break;
}
- block = ast_block_new(parser_ctx(parser));
- if (!block) {
- parseerror(parser, "failed to allocate block");
- return false;
+ if (var->hasvalue) {
+ (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
+ "builtin `%s` has already been defined\n"
+ " -> previous declaration here: %s:%i",
+ var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
}
-
- for (parami = 0; parami < var->expression.params_count; ++parami) {
- ast_value *param = var->expression.params[parami];
- varentry_t vx, vy, vz;
-
- if (param->expression.vtype != TYPE_VECTOR &&
- (param->expression.vtype != TYPE_FIELD ||
- param->expression.next->expression.vtype != TYPE_VECTOR))
- {
- continue;
- }
-
- if (!create_vector_members(parser, param, &vx, &vy, &vz)) {
- ast_block_delete(block);
- return false;
+ else
+ {
+ func = ast_function_new(ast_ctx(var), var->name, var);
+ if (!func) {
+ parseerror(parser, "failed to allocate function for `%s`", var->name);
+ break;
}
+ vec_push(parser->functions, func);
- (void)!parser_t_locals_add(parser, vx);
- (void)!parser_t_locals_add(parser, vy);
- (void)!parser_t_locals_add(parser, vz);
- if (!ast_block_collect(block, vx.var) ||
- !ast_block_collect(block, vy.var) ||
- !ast_block_collect(block, vz.var) )
- {
- parser_pop_local(parser);
- parser_pop_local(parser);
- parser_pop_local(parser);
- ast_block_delete(block);
- return false;
- }
+ func->builtin = -parser_token(parser)->constval.i-1;
}
- parser->function = func;
- if (!parser_parse_block_into(parser, block)) {
- ast_block_delete(block);
- parser->function = old;
- return false;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected comma or semicolon");
+ if (func)
+ ast_function_delete(func);
+ var->constval.vfunc = NULL;
+ break;
}
- parser->function = old;
-
- if (!block)
- return false;
-
- if (!ast_function_blocks_add(func, block)) {
- ast_block_delete(block);
- return false;
+ }
+ else if (parser->tok == '{' || parser->tok == '[')
+ {
+ if (localblock) {
+ parseerror(parser, "cannot declare functions within functions");
+ break;
}
- if (parser->tok == ';')
- return parser_next(parser) || parser->tok == TOKEN_EOF;
- else if (opts_standard == COMPILER_QCC)
- parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
+ if (proto)
+ ast_ctx(proto) = parser_ctx(parser);
+
+ if (!parse_function_body(parser, var))
+ break;
+ ast_delete(basetype);
+ for (i = 0; i < vec_size(parser->gotos); ++i)
+ parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
+ vec_free(parser->gotos);
+ vec_free(parser->labels);
return true;
} else {
ast_expression *cexp;
ast_value *cval;
- cexp = parser_expression_leave(parser, true);
- cval = (ast_value*)cexp;
- if (!ast_istype(cval, ast_value) || !cval->isconst)
- parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
- else
- {
- var->isconst = true;
- memcpy(&var->constval, &cval->constval, sizeof(var->constval));
- memset(&cval->constval, 0, sizeof(cval->constval));
- ast_unref(cval);
+ cexp = parse_expression_leave(parser, true);
+ if (!cexp)
+ break;
+
+ if (!localblock) {
+ cval = (ast_value*)cexp;
+ if (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
+ parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
+ else
+ {
+ if (opts.standard != COMPILER_GMQCC &&
+ !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
+ qualifier != CV_VAR)
+ {
+ var->cvq = CV_CONST;
+ }
+ var->hasvalue = true;
+ if (cval->expression.vtype == TYPE_STRING)
+ var->constval.vstring = parser_strdup(cval->constval.vstring);
+ else if (cval->expression.vtype == TYPE_FIELD)
+ var->constval.vfield = cval;
+ else
+ memcpy(&var->constval, &cval->constval, sizeof(var->constval));
+ ast_unref(cval);
+ }
+ } else {
+ bool cvq;
+ shunt sy = { NULL, NULL };
+ cvq = var->cvq;
+ var->cvq = CV_NONE;
+ vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
+ vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
+ vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
+ if (!parser_sy_apply_operator(parser, &sy))
+ ast_unref(cexp);
+ else {
+ if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
+ parseerror(parser, "internal error: leaked operands");
+ if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
+ break;
+ }
+ vec_free(sy.out);
+ vec_free(sy.ops);
+ var->cvq = cvq;
}
}
+another:
if (parser->tok == ',') {
- /* another */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected another variable");
+ break;
+ }
+
+ if (parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected another variable");
+ break;
+ }
+ var = ast_value_copy(basetype);
+ cleanvar = true;
+ ast_value_set_name(var, parser_tokval(parser));
+ if (!parser_next(parser)) {
+ parseerror(parser, "error parsing variable declaration");
+ break;
+ }
continue;
}
if (parser->tok != ';') {
- parseerror(parser, "missing semicolon");
- return false;
+ parseerror(parser, "missing semicolon after variables");
+ break;
}
- (void)parser_next(parser);
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after variable declaration");
+ break;
+ }
+ ast_delete(basetype);
return true;
}
+
+ if (cleanvar && var)
+ ast_delete(var);
+ ast_delete(basetype);
+ return false;
+
+cleanup:
+ ast_delete(basetype);
+ if (cleanvar && var)
+ ast_delete(var);
+ if (me[0]) ast_member_delete(me[0]);
+ if (me[1]) ast_member_delete(me[1]);
+ if (me[2]) ast_member_delete(me[2]);
+ return retval;
}
-static bool parser_do(parser_t *parser)
+static bool parser_global_statement(parser_t *parser)
{
- if (parser->tok == TOKEN_TYPENAME)
+ int cvq = CV_WRONG;
+ bool noref = false;
+ bool noreturn = false;
+ bool is_static = false;
+ ast_value *istype = NULL;
+
+ if (parser->tok == TOKEN_IDENT)
+ istype = parser_find_typedef(parser, parser_tokval(parser), 0);
+
+ if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
{
- return parser_variable(parser, NULL);
+ return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, false);
}
- else if (parser->tok == TOKEN_KEYWORD)
+ else if (parse_var_qualifiers(parser, false, &cvq, &noref, &noreturn, &is_static))
{
- /* handle 'var' and 'const' */
- return false;
+ if (cvq == CV_WRONG)
+ return false;
+ return parse_variable(parser, NULL, true, cvq, NULL, noref, noreturn, is_static);
}
- else if (parser->tok == '.')
+ else if (parser->tok == TOKEN_KEYWORD)
{
- ast_value *var;
- ast_value *typevar;
- ast_value *fld;
- ast_expression *oldex;
- bool isfunc = false;
- int basetype;
- lex_ctx ctx = parser_ctx(parser);
- varentry_t varent;
-
- /* entity-member declaration */
- if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
- parseerror(parser, "expected member variable definition");
- return false;
- }
-
- /* remember the base/return type */
- basetype = parser_token(parser)->constval.t;
-
- /* parse into the declaration */
- if (!parser_next(parser)) {
- parseerror(parser, "expected field def");
- return false;
- }
-
- /* parse the field type fully */
- typevar = var = parser_parse_type(parser, basetype, &isfunc);
- if (!var)
- return false;
-
- while (true) {
- var = ast_value_copy(typevar);
- /* now the field name */
- if (parser->tok != TOKEN_IDENT) {
- parseerror(parser, "expected field name");
- ast_delete(var);
- return false;
- }
-
- /* check for an existing field
- * in original qc we also have to check for an existing
- * global named like the field
- */
- if (opts_standard == COMPILER_QCC) {
- if (parser_find_global(parser, parser_tokval(parser))) {
- parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
- ast_delete(var);
- return false;
- }
- }
-
- if (isfunc) {
- ast_value *fval;
- fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
- if (!fval) {
- ast_value_delete(var);
- return false;
- }
- fval->expression.next = (ast_expression*)var;
- MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
- var = fval;
- }
-
- /* turn it into a field */
- fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
- fld->expression.next = (ast_expression*)var;
-
- if ( (oldex = parser_find_field(parser, parser_tokval(parser)))) {
- if (ast_istype(oldex, ast_member)) {
- parseerror(parser, "cannot declare a field with the same name as a vector component, component %s has been declared here: %s:%i",
- parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
- ast_delete(fld);
- return false;
- }
- if (!ast_istype(oldex, ast_value)) {
- /* not possible / sanity check */
- parseerror(parser, "internal error: %s is not an ast_value", parser_tokval(parser));
- ast_delete(fld);
- return false;
- }
-
- if (!ast_compare_type(oldex, (ast_expression*)fld)) {
- parseerror(parser, "field %s has previously been declared with a different type here: %s:%i",
- parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
- ast_delete(fld);
- return false;
- } else {
- if (parsewarning(parser, WARN_FIELD_REDECLARED, "field %s has already been declared here: %s:%i",
- parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line))
- {
- ast_delete(fld);
- return false;
- }
- }
-
- ast_delete(fld);
- goto nextfield;
- }
-
- varent.var = (ast_expression*)fld;
- varent.name = util_strdup(fld->name);
- (void)!parser_t_fields_add(parser, varent);
-
- if (var->expression.vtype == TYPE_VECTOR)
- {
- /* create _x, _y and _z fields as well */
- varentry_t vx, vy, vz;
- if (!create_vector_members(parser, fld, &vx, &vy, &vz)) {
- ast_delete(fld);
- return false;
- }
- (void)!parser_t_fields_add(parser, vx);
- (void)!parser_t_fields_add(parser, vy);
- (void)!parser_t_fields_add(parser, vz);
- }
-
-nextfield:
+ if (!strcmp(parser_tokval(parser), "typedef")) {
if (!parser_next(parser)) {
- parseerror(parser, "expected semicolon or another field name");
- return false;
- }
- if (parser->tok == ';')
- break;
- if (parser->tok != ',' || !parser_next(parser)) {
- parseerror(parser, "expected semicolon or another field name");
+ parseerror(parser, "expected type definition after 'typedef'");
return false;
}
+ return parse_typedef(parser);
}
- ast_delete(typevar);
-
- /* skip the semicolon */
- if (!parser_next(parser))
- return parser->tok == TOKEN_EOF;
-
- return true;
+ parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
+ return false;
+ }
+ else if (parser->tok == '#')
+ {
+ return parse_pragma(parser);
}
else if (parser->tok == '$')
{
}
else
{
- parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
+ parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
return false;
}
return true;
}
+static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
+{
+ return util_crc16(old, str, strlen(str));
+}
+
+static void progdefs_crc_file(const char *str)
+{
+ /* write to progdefs.h here */
+ (void)str;
+}
+
+static uint16_t progdefs_crc_both(uint16_t old, const char *str)
+{
+ old = progdefs_crc_sum(old, str);
+ progdefs_crc_file(str);
+ return old;
+}
+
+static void generate_checksum(parser_t *parser)
+{
+ uint16_t crc = 0xFFFF;
+ size_t i;
+ ast_value *value;
+
+ crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
+ crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
+ /*
+ progdefs_crc_file("\tint\tpad;\n");
+ progdefs_crc_file("\tint\tofs_return[3];\n");
+ progdefs_crc_file("\tint\tofs_parm0[3];\n");
+ progdefs_crc_file("\tint\tofs_parm1[3];\n");
+ progdefs_crc_file("\tint\tofs_parm2[3];\n");
+ progdefs_crc_file("\tint\tofs_parm3[3];\n");
+ progdefs_crc_file("\tint\tofs_parm4[3];\n");
+ progdefs_crc_file("\tint\tofs_parm5[3];\n");
+ progdefs_crc_file("\tint\tofs_parm6[3];\n");
+ progdefs_crc_file("\tint\tofs_parm7[3];\n");
+ */
+ for (i = 0; i < parser->crc_globals; ++i) {
+ if (!ast_istype(parser->globals[i], ast_value))
+ continue;
+ value = (ast_value*)(parser->globals[i]);
+ switch (value->expression.vtype) {
+ case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
+ case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
+ case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
+ case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
+ default:
+ crc = progdefs_crc_both(crc, "\tint\t");
+ break;
+ }
+ crc = progdefs_crc_both(crc, value->name);
+ crc = progdefs_crc_both(crc, ";\n");
+ }
+ crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
+ for (i = 0; i < parser->crc_fields; ++i) {
+ if (!ast_istype(parser->fields[i], ast_value))
+ continue;
+ value = (ast_value*)(parser->fields[i]);
+ switch (value->expression.next->expression.vtype) {
+ case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
+ case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
+ case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
+ case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
+ default:
+ crc = progdefs_crc_both(crc, "\tint\t");
+ break;
+ }
+ crc = progdefs_crc_both(crc, value->name);
+ crc = progdefs_crc_both(crc, ";\n");
+ }
+ crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
+
+ code_crc = crc;
+}
+
static parser_t *parser;
bool parser_init()
{
+ size_t i;
+
parser = (parser_t*)mem_a(sizeof(parser_t));
if (!parser)
return false;
memset(parser, 0, sizeof(*parser));
- return true;
-}
-bool parser_compile(const char *filename)
-{
- parser->lex = lex_open(filename);
- if (!parser->lex) {
- printf("failed to open file \"%s\"\n", filename);
+ for (i = 0; i < operator_count; ++i) {
+ if (operators[i].id == opid1('=')) {
+ parser->assign_op = operators+i;
+ break;
+ }
+ }
+ if (!parser->assign_op) {
+ printf("internal error: initializing parser: failed to find assign operator\n");
+ mem_d(parser);
return false;
}
+ vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
+ vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
+ vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
+ vec_push(parser->_blocktypedefs, 0);
+ return true;
+}
+
+bool parser_compile()
+{
/* initial lexer/parser state */
parser->lex->flags.noops = true;
{
while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
{
- if (!parser_do(parser)) {
+ if (!parser_global_statement(parser)) {
if (parser->tok == TOKEN_EOF)
parseerror(parser, "unexpected eof");
else if (!parser->errors)
- parseerror(parser, "parse error\n");
+ parseerror(parser, "there have been errors, bailing out");
lex_close(parser->lex);
parser->lex = NULL;
return false;
}
}
+ } else {
+ parseerror(parser, "parse error");
+ lex_close(parser->lex);
+ parser->lex = NULL;
+ return false;
}
lex_close(parser->lex);
return !parser->errors;
}
+bool parser_compile_file(const char *filename)
+{
+ parser->lex = lex_open(filename);
+ if (!parser->lex) {
+ con_err("failed to open file \"%s\"\n", filename);
+ return false;
+ }
+ return parser_compile();
+}
+
+bool parser_compile_string(const char *name, const char *str, size_t len)
+{
+ parser->lex = lex_open_string(str, len, name);
+ if (!parser->lex) {
+ con_err("failed to create lexer for string \"%s\"\n", name);
+ return false;
+ }
+ return parser_compile();
+}
+
void parser_cleanup()
{
size_t i;
- for (i = 0; i < parser->functions_count; ++i) {
+ for (i = 0; i < vec_size(parser->accessors); ++i) {
+ ast_delete(parser->accessors[i]->constval.vfunc);
+ parser->accessors[i]->constval.vfunc = NULL;
+ ast_delete(parser->accessors[i]);
+ }
+ for (i = 0; i < vec_size(parser->functions); ++i) {
ast_delete(parser->functions[i]);
}
- for (i = 0; i < parser->imm_vector_count; ++i) {
+ for (i = 0; i < vec_size(parser->imm_vector); ++i) {
ast_delete(parser->imm_vector[i]);
}
- for (i = 0; i < parser->imm_string_count; ++i) {
+ for (i = 0; i < vec_size(parser->imm_string); ++i) {
ast_delete(parser->imm_string[i]);
}
- for (i = 0; i < parser->imm_float_count; ++i) {
+ for (i = 0; i < vec_size(parser->imm_float); ++i) {
ast_delete(parser->imm_float[i]);
}
- for (i = 0; i < parser->fields_count; ++i) {
- ast_delete(parser->fields[i].var);
- mem_d(parser->fields[i].name);
+ for (i = 0; i < vec_size(parser->fields); ++i) {
+ ast_delete(parser->fields[i]);
}
- for (i = 0; i < parser->globals_count; ++i) {
- ast_delete(parser->globals[i].var);
- mem_d(parser->globals[i].name);
+ for (i = 0; i < vec_size(parser->globals); ++i) {
+ ast_delete(parser->globals[i]);
}
- MEM_VECTOR_CLEAR(parser, functions);
- MEM_VECTOR_CLEAR(parser, imm_vector);
- MEM_VECTOR_CLEAR(parser, imm_string);
- MEM_VECTOR_CLEAR(parser, imm_float);
- MEM_VECTOR_CLEAR(parser, globals);
- MEM_VECTOR_CLEAR(parser, fields);
- MEM_VECTOR_CLEAR(parser, locals);
+ vec_free(parser->accessors);
+ vec_free(parser->functions);
+ vec_free(parser->imm_vector);
+ vec_free(parser->imm_string);
+ vec_free(parser->imm_float);
+ vec_free(parser->globals);
+ vec_free(parser->fields);
+
+ for (i = 0; i < vec_size(parser->variables); ++i)
+ util_htdel(parser->variables[i]);
+ vec_free(parser->variables);
+ vec_free(parser->_blocklocals);
+ vec_free(parser->_locals);
+
+ for (i = 0; i < vec_size(parser->_typedefs); ++i)
+ ast_delete(parser->_typedefs[i]);
+ vec_free(parser->_typedefs);
+ for (i = 0; i < vec_size(parser->typedefs); ++i)
+ util_htdel(parser->typedefs[i]);
+ vec_free(parser->typedefs);
+ vec_free(parser->_blocktypedefs);
+
+ vec_free(parser->_block_ctx);
+
+ vec_free(parser->labels);
+ vec_free(parser->gotos);
mem_d(parser);
}
{
size_t i;
ir_builder *ir;
+ bool retval = true;
if (!parser->errors)
{
ir = ir_builder_new("gmqcc_out");
if (!ir) {
- printf("failed to allocate builder\n");
+ con_out("failed to allocate builder\n");
return false;
}
- for (i = 0; i < parser->imm_float_count; ++i) {
- if (!ast_global_codegen(parser->imm_float[i], ir)) {
- printf("failed to generate global %s\n", parser->imm_float[i]->name);
+ for (i = 0; i < vec_size(parser->fields); ++i) {
+ ast_value *field;
+ bool hasvalue;
+ if (!ast_istype(parser->fields[i], ast_value))
+ continue;
+ field = (ast_value*)parser->fields[i];
+ hasvalue = field->hasvalue;
+ field->hasvalue = false;
+ if (!ast_global_codegen((ast_value*)field, ir, true)) {
+ con_out("failed to generate field %s\n", field->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ if (hasvalue) {
+ ir_value *ifld;
+ ast_expression *subtype;
+ field->hasvalue = true;
+ subtype = field->expression.next;
+ ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
+ if (subtype->expression.vtype == TYPE_FIELD)
+ ifld->fieldtype = subtype->expression.next->expression.vtype;
+ else if (subtype->expression.vtype == TYPE_FUNCTION)
+ ifld->outtype = subtype->expression.next->expression.vtype;
+ (void)!ir_value_set_field(field->ir_v, ifld);
+ }
+ }
+ for (i = 0; i < vec_size(parser->globals); ++i) {
+ ast_value *asvalue;
+ if (!ast_istype(parser->globals[i], ast_value))
+ continue;
+ asvalue = (ast_value*)(parser->globals[i]);
+ if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
+ retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
+ "unused global: `%s`", asvalue->name);
+ }
+ if (!ast_global_codegen(asvalue, ir, false)) {
+ con_out("failed to generate global %s\n", asvalue->name);
ir_builder_delete(ir);
return false;
}
}
- for (i = 0; i < parser->imm_string_count; ++i) {
- if (!ast_global_codegen(parser->imm_string[i], ir)) {
- printf("failed to generate global %s\n", parser->imm_string[i]->name);
+ for (i = 0; i < vec_size(parser->imm_float); ++i) {
+ if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
+ con_out("failed to generate global %s\n", parser->imm_float[i]->name);
ir_builder_delete(ir);
return false;
}
}
- for (i = 0; i < parser->imm_vector_count; ++i) {
- if (!ast_global_codegen(parser->imm_vector[i], ir)) {
- printf("failed to generate global %s\n", parser->imm_vector[i]->name);
+ for (i = 0; i < vec_size(parser->imm_string); ++i) {
+ if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
+ con_out("failed to generate global %s\n", parser->imm_string[i]->name);
ir_builder_delete(ir);
return false;
}
}
- for (i = 0; i < parser->fields_count; ++i) {
- ast_value *field;
- bool isconst;
- if (!ast_istype(parser->fields[i].var, ast_value))
- continue;
- field = (ast_value*)parser->fields[i].var;
- isconst = field->isconst;
- field->isconst = false;
- if (!ast_global_codegen((ast_value*)field, ir)) {
- printf("failed to generate field %s\n", field->name);
+ for (i = 0; i < vec_size(parser->imm_vector); ++i) {
+ if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
+ con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
ir_builder_delete(ir);
return false;
}
- if (isconst) {
- ir_value *ifld;
- ast_expression *subtype;
- field->isconst = true;
- subtype = field->expression.next;
- ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
- if (subtype->expression.vtype == TYPE_FIELD)
- ifld->fieldtype = subtype->expression.next->expression.vtype;
- else if (subtype->expression.vtype == TYPE_FUNCTION)
- ifld->outtype = subtype->expression.next->expression.vtype;
- (void)!ir_value_set_field(field->ir_v, ifld);
+ }
+ for (i = 0; i < vec_size(parser->globals); ++i) {
+ ast_value *asvalue;
+ if (!ast_istype(parser->globals[i], ast_value))
+ continue;
+ asvalue = (ast_value*)(parser->globals[i]);
+ if (!ast_generate_accessors(asvalue, ir)) {
+ ir_builder_delete(ir);
+ return false;
}
}
- for (i = 0; i < parser->globals_count; ++i) {
- if (!ast_istype(parser->globals[i].var, ast_value))
+ for (i = 0; i < vec_size(parser->fields); ++i) {
+ ast_value *asvalue;
+ asvalue = (ast_value*)(parser->fields[i]->expression.next);
+
+ if (!ast_istype((ast_expression*)asvalue, ast_value))
continue;
- if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
- printf("failed to generate global %s\n", parser->globals[i].name);
+ if (asvalue->expression.vtype != TYPE_ARRAY)
+ continue;
+ if (!ast_generate_accessors(asvalue, ir)) {
ir_builder_delete(ir);
return false;
}
}
- for (i = 0; i < parser->functions_count; ++i) {
+ for (i = 0; i < vec_size(parser->functions); ++i) {
if (!ast_function_codegen(parser->functions[i], ir)) {
- printf("failed to generate function %s\n", parser->functions[i]->name);
+ con_out("failed to generate function %s\n", parser->functions[i]->name);
ir_builder_delete(ir);
return false;
}
+ }
+ if (opts.dump)
+ ir_builder_dump(ir, con_out);
+ for (i = 0; i < vec_size(parser->functions); ++i) {
if (!ir_function_finalize(parser->functions[i]->ir_func)) {
- printf("failed to finalize function %s\n", parser->functions[i]->name);
+ con_out("failed to finalize function %s\n", parser->functions[i]->name);
ir_builder_delete(ir);
return false;
}
}
- if (opts_dump)
- ir_builder_dump(ir, printf);
+ if (retval) {
+ if (opts.dumpfin)
+ ir_builder_dump(ir, con_out);
- if (!ir_builder_generate(ir, output)) {
- printf("*** failed to generate output file\n");
- ir_builder_delete(ir);
- return false;
+ generate_checksum(parser);
+
+ if (!ir_builder_generate(ir, output)) {
+ con_out("*** failed to generate output file\n");
+ ir_builder_delete(ir);
+ return false;
+ }
}
ir_builder_delete(ir);
- return true;
+ return retval;
}
- printf("*** there were compile errors\n");
+ con_out("*** there were compile errors\n");
return false;
}