#include "gmqcc.h"
#include "lexer.h"
+typedef struct {
+ char *name;
+ ast_expression *var;
+} varentry_t;
+
typedef struct {
lex_file *lex;
int tok;
- MEM_VECTOR_MAKE(ast_value*, globals);
+ 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_value *imm_float_zero;
+ ast_value *imm_vector_zero;
ast_function *function;
- MEM_VECTOR_MAKE(ast_value*, locals);
+ MEM_VECTOR_MAKE(varentry_t, locals);
size_t blocklocal;
+
+ size_t errors;
+
+ /* 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, ast_value*, globals)
+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*, locals)
+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)
-void parseerror(parser_t *parser, const char *fmt, ...)
+static bool GMQCC_WARN parser_pop_local(parser_t *parser);
+static bool parse_variable(parser_t *parser, ast_block *localblock);
+static ast_block* parse_block(parser_t *parser, bool warnreturn);
+static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
+static ast_expression* parse_statement_or_block(parser_t *parser);
+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;
+
+ 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);
+}
+
+/* returns true if it counts as an error */
+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);
+
+ return opts_werror;
+}
+
+static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
{
va_list ap;
+ int lvl = LVL_WARNING;
+
+ if (!OPTS_WARN(warntype))
+ return false;
- if (parser)
- printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
- else
- printf("error: ");
+ if (opts_werror)
+ lvl = LVL_ERROR;
va_start(ap, fmt);
- vprintf(fmt, ap);
+ vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
va_end(ap);
- printf("\n");
+ return opts_werror;
+}
+
+/**********************************************************************
+ * some maths used for constant folding
+ */
+
+vector vec3_add(vector a, vector b)
+{
+ vector out;
+ out.x = a.x + b.x;
+ out.y = a.y + b.y;
+ out.z = a.z + b.z;
+ return out;
+}
+
+vector vec3_sub(vector a, vector b)
+{
+ vector out;
+ out.x = a.x - b.x;
+ out.y = a.y - b.y;
+ out.z = a.z - b.z;
+ return out;
+}
+
+qcfloat vec3_mulvv(vector a, vector b)
+{
+ return (a.x * b.x + a.y * b.y + a.z * b.z);
+}
+
+vector vec3_mulvf(vector a, float b)
+{
+ vector out;
+ out.x = a.x * b;
+ out.y = a.y * b;
+ out.z = a.z * b;
+ return out;
}
+/**********************************************************************
+ * parsing
+ */
+
bool parser_next(parser_t *parser)
{
/* 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;
return out;
}
-ast_value* parser_find_global(parser_t *parser, const char *name)
+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;
+}
+
+static char *parser_strdup(const char *str)
+{
+ if (str && !*str) {
+ /* actually dup empty strings */
+ char *out = mem_a(1);
+ *out = 0;
+ return out;
+ }
+ return util_strdup(str);
+}
+
+static ast_value* parser_const_string(parser_t *parser, const char *str)
+{
+ size_t i;
+ ast_value *out;
+ for (i = 0; i < parser->imm_string_count; ++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;
+ out->constval.vstring = parser_strdup(str);
+ if (!parser_t_imm_string_add(parser, out)) {
+ ast_value_delete(out);
+ return NULL;
+ }
+ return out;
+}
+
+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) {
+ 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->constval.vvec = v;
+ if (!parser_t_imm_vector_add(parser, out)) {
+ ast_value_delete(out);
+ return NULL;
+ }
+ return out;
+}
+
+static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
+{
+ vector v;
+ v.x = x;
+ v.y = y;
+ v.z = z;
+ return parser_const_vector(parser, v);
+}
+
+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;
+}
+
+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;
+}
+
+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];
+ if (!strcmp(parser->globals[i].name, name))
+ return parser->globals[i].var;
}
return NULL;
}
-ast_value* parser_find_local(parser_t *parser, const char *name, size_t upto)
+static ast_expression* parser_find_param(parser_t *parser, const char *name)
{
size_t i;
ast_value *fun;
- for (i = parser->locals_count; i > upto;) {
- --i;
- if (!strcmp(parser->locals[i]->name, name))
- return parser->locals[i];
- }
+ if (!parser->function)
+ return NULL;
fun = parser->function->vtype;
- for (i = 0; i < fun->params_count; ++i) {
- if (!strcmp(fun->params[i]->name, name))
- return fun->params[i];
+ for (i = 0; i < fun->expression.params_count; ++i) {
+ if (!strcmp(fun->expression.params[i]->name, name))
+ return (ast_expression*)(fun->expression.params[i]);
}
return NULL;
}
-ast_value* parser_find_var(parser_t *parser, const char *name)
+static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
+{
+ size_t i;
+ *isparam = false;
+ for (i = parser->locals_count; i > upto;) {
+ --i;
+ if (!strcmp(parser->locals[i].name, name))
+ return parser->locals[i].var;
+ }
+ *isparam = true;
+ return parser_find_param(parser, name);
+}
+
+static ast_expression* parser_find_var(parser_t *parser, const char *name)
{
- ast_value *v;
- v = parser_find_local(parser, name, 0);
+ bool dummy;
+ ast_expression *v;
+ v = parser_find_local(parser, name, 0, &dummy);
if (!v) v = parser_find_global(parser, name);
return v;
}
} 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 *parse_type(parser_t *parser, int basetype, bool *isfunc)
{
paramlist_t params;
ast_value *var;
int vtype = basetype;
int temptype;
size_t i;
+ bool variadic = false;
MEM_VECTOR_INIT(¶ms, p);
*isfunc = true;
while (true) {
ast_value *param;
- bool dummy;
+ ast_value *fld;
+ bool isfield = false;
+ bool isfuncparam = false;
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;
+ }
+ }
+
+ if (parser->tok == TOKEN_DOTS) {
+ /* variadic args */
+ variadic = true;
+ if (!parser_next(parser))
+ goto on_error;
+ if (parser->tok != ')') {
+ parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
+ goto on_error;
+ }
+ if (opts_standard == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS, "variadic functions are not available in this standard"))
+ goto on_error;
+ }
+ break;
+ }
+
temptype = parser_token(parser)->constval.t;
if (!parser_next(parser))
goto on_error;
- param = parser_parse_type(parser, temptype, &dummy);
- (void)dummy;
+ param = parse_type(parser, temptype, &isfuncparam);
if (!param)
goto on_error;
goto on_error;
}
+ /* This comes before the isfield part! */
+ if (isfuncparam) {
+ ast_value *fval = ast_value_new(ast_ctx(param), param->name, TYPE_FUNCTION);
+ if (!fval) {
+ ast_delete(param);
+ goto on_error;
+ }
+ fval->expression.next = (ast_expression*)param;
+ MEM_VECTOR_MOVE(¶m->expression, params, &fval->expression, params);
+ fval->expression.variadic = param->expression.variadic;
+ param = fval;
+ }
+
+ 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;
var = ast_value_new(ctx, "<unnamed>", vtype);
if (!var)
goto on_error;
- MEM_VECTOR_MOVE(¶ms, p, var, params);
+ var->expression.variadic = variadic;
+ MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
return var;
on_error:
for (i = 0; i < params.p_count; ++i)
{
size_t etype; /* 0 = expression, others are operators */
int paren;
+ size_t off;
ast_expression *out;
- ast_value *value; /* need to know if we can assign */
+ ast_block *block; /* for commas and function calls */
lex_ctx ctx;
} sy_elem;
typedef struct
sy_elem e;
e.etype = 0;
e.out = v;
- e.value = NULL;
+ e.block = NULL;
e.ctx = ctx;
e.paren = 0;
return e;
}
-static sy_elem syval(lex_ctx ctx, ast_value *v) {
+
+static sy_elem syblock(lex_ctx ctx, ast_block *v) {
sy_elem e;
e.etype = 0;
e.out = (ast_expression*)v;
- e.value = v;
+ e.block = v;
e.ctx = ctx;
e.paren = 0;
return e;
sy_elem e;
e.etype = 1 + (op - operators);
e.out = NULL;
- e.value = NULL;
+ e.block = NULL;
e.ctx = ctx;
e.paren = 0;
return e;
}
-static sy_elem syparen(lex_ctx ctx, int p) {
+static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
sy_elem e;
e.etype = 0;
+ e.off = off;
e.out = NULL;
- e.value = NULL;
+ e.block = NULL;
e.ctx = ctx;
e.paren = p;
return e;
}
+#ifdef DEBUGSHUNT
+# define DEBUGSHUNTDO(x) x
+#else
+# define DEBUGSHUNTDO(x)
+#endif
+
static bool parser_sy_pop(parser_t *parser, shunt *sy)
{
const oper_info *op;
lex_ctx ctx;
ast_expression *out = NULL;
ast_expression *exprs[3];
- ast_value *vars[3];
- size_t i;
+ ast_block *blocks[3];
+ ast_value *asvalue[3];
+ size_t i, assignop;
+ qcint generated_op = 0;
if (!sy->ops_count) {
parseerror(parser, "internal error: missing operator");
op = &operators[sy->ops[sy->ops_count-1].etype - 1];
ctx = sy->ops[sy->ops_count-1].ctx;
+ DEBUGSHUNTDO(printf("apply %s\n", op->op));
+
if (sy->out_count < op->operands) {
- parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
+ parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", sy->out_count,
+ op->op, (int)op->id);
return false;
}
sy->out_count -= op->operands;
for (i = 0; i < op->operands; ++i) {
- exprs[i] = sy->out[sy->out_count+i].out;
- vars[i] = sy->out[sy->out_count+i].value;
+ exprs[i] = sy->out[sy->out_count+i].out;
+ blocks[i] = sy->out[sy->out_count+i].block;
+ asvalue[i] = (ast_value*)exprs[i];
}
+ if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
+ parseerror(parser, "internal error: operator cannot be applied on empty blocks");
+ return false;
+ }
+
+#define NotSameType(T) \
+ (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)
+#define CanConstFold(A, B) \
+ (CanConstFold1(A) && CanConstFold1(B))
+#define ConstV(i) (asvalue[(i)]->constval.vvec)
+#define ConstF(i) (asvalue[(i)]->constval.vfloat)
+#define ConstS(i) (asvalue[(i)]->constval.vstring)
switch (op->id)
{
default:
- parseerror(parser, "internal error: unhandled operand");
+ parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
return false;
+ case opid1('.'):
+ if (exprs[0]->expression.vtype == TYPE_ENTITY) {
+ if (exprs[1]->expression.vtype != TYPE_FIELD) {
+ parseerror(parser, "type error: right hand of member-operand should be an entity-field");
+ return false;
+ }
+ out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
+ }
+ else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
+ parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
+ return false;
+ }
+ else {
+ parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
+ return false;
+ }
+ break;
+
+ case opid1(','):
+ if (blocks[0]) {
+ if (!ast_block_exprs_add(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]))
+ {
+ return false;
+ }
+ }
+ if (!ast_block_set_type(blocks[0], exprs[1]))
+ return false;
+
+ sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
+ return true;
+
+ case opid2('-','P'):
+ switch (exprs[0]->expression.vtype) {
+ case TYPE_FLOAT:
+ if (CanConstFold1(exprs[0]))
+ out = (ast_expression*)parser_const_float(parser, -ConstF(0));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
+ (ast_expression*)parser_const_float_0(parser),
+ exprs[0]);
+ break;
+ case TYPE_VECTOR:
+ if (CanConstFold1(exprs[0]))
+ out = (ast_expression*)parser_const_vector_f(parser,
+ -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
+ (ast_expression*)parser_const_vector_0(parser),
+ exprs[0]);
+ break;
+ default:
+ parseerror(parser, "invalid types used in expression: cannot negate type %s",
+ type_name[exprs[0]->expression.vtype]);
+ return false;
+ }
+ break;
+
+ case opid2('!','P'):
+ switch (exprs[0]->expression.vtype) {
+ case TYPE_FLOAT:
+ if (CanConstFold1(exprs[0]))
+ out = (ast_expression*)parser_const_float(parser, !ConstF(0));
+ else
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
+ break;
+ case TYPE_VECTOR:
+ if (CanConstFold1(exprs[0]))
+ out = (ast_expression*)parser_const_float(parser,
+ (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
+ else
+ 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]);
+ break;
+ /* we don't constant-fold NOT for these types */
+ case TYPE_ENTITY:
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
+ break;
+ case TYPE_FUNCTION:
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
+ break;
+ default:
+ parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
+ type_name[exprs[0]->expression.vtype]);
+ return false;
+ }
+ break;
+
case opid1('+'):
- if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
- parseerror(parser, "Cannot add type %s and %s",
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
+ (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
+ {
+ parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
}
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ {
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
+ }
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
break;
case TYPE_VECTOR:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
break;
default:
- parseerror(parser, "Cannot add type %s and %s",
+ parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
};
break;
case opid1('-'):
- if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
- parseerror(parser, "Cannot subtract type %s from %s",
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
+ (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
+ {
+ parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
}
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
break;
case TYPE_VECTOR:
- out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
break;
default:
- parseerror(parser, "Cannot add type %s from %s",
+ parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
exprs[1]->expression.vtype != TYPE_VECTOR &&
exprs[1]->expression.vtype != TYPE_FLOAT)
{
- parseerror(parser, "Cannot multiply type %s from %s",
+ parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
if (exprs[1]->expression.vtype == TYPE_VECTOR)
- out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
+ }
else
- out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
+ }
break;
case TYPE_VECTOR:
if (exprs[1]->expression.vtype == TYPE_FLOAT)
- out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
+ }
else
- out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
+ }
break;
default:
- parseerror(parser, "Cannot add type %s from %s",
+ parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
};
break;
case opid1('/'):
- if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
- exprs[0]->expression.vtype != TYPE_FLOAT)
- {
- parseerror(parser, "Cannot divide types %s and %s",
+ if (NotSameType(TYPE_FLOAT)) {
+ parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
+ break;
+ case opid1('%'):
+ case opid2('%','='):
+ parseerror(parser, "qc does not have a modulo operator");
+ return false;
+ case opid1('|'):
+ case opid1('&'):
+ if (NotSameType(TYPE_FLOAT)) {
+ parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser,
+ (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
+ (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
+ else
+ out = (ast_expression*)ast_binary_new(ctx,
+ (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
+ exprs[0], exprs[1]);
+ break;
+ case opid1('^'):
+ parseerror(parser, "TODO: bitxor");
+ return false;
+
+ case opid2('<','<'):
+ case opid2('>','>'):
+ case opid3('<','<','='):
+ case opid3('>','>','='):
+ parseerror(parser, "TODO: shifts");
+ return false;
+
+ case opid2('|','|'):
+ generated_op += 1; /* INSTR_OR */
+ case opid2('&','&'):
+ generated_op += INSTR_AND;
+ 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],
type_name[exprs[1]->expression.vtype]);
+ parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
+ parseerror(parser, "TODO: optional early out");
return false;
}
- out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
+ if (opts_standard == COMPILER_GMQCC)
+ printf("TODO: early out logic\n");
+ 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))));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
break;
+ case opid1('>'):
+ generated_op += 1; /* INSTR_GT */
+ case opid1('<'):
+ generated_op += 1; /* INSTR_LT */
+ case opid2('>', '='):
+ generated_op += 1; /* INSTR_GE */
+ case opid2('<', '='):
+ generated_op += INSTR_LE;
+ if (NotSameType(TYPE_FLOAT)) {
+ parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
+ break;
+ case opid2('!', '='):
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
+ parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
+ break;
+ case opid2('=', '='):
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
+ parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
+ break;
case opid1('='):
- if (!vars[0]) {
- parseerror(parser, "Cannot assign to non-variable");
+ 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_store_new(ctx, assignop, exprs[0], exprs[1]);
+ 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) )
+ {
+ 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;
}
- out = (ast_expression*)ast_store_new(ctx,
- type_store_instr[vars[0]->expression.vtype],
- vars[0], exprs[1]);
+ 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_ADD_F : INSTR_SUB_F),
+ exprs[0], exprs[1]);
+ break;
+ case TYPE_VECTOR:
+ out = (ast_expression*)ast_binstore_new(ctx, assignop,
+ (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
+ exprs[0], exprs[1]);
+ 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;
}
+#undef NotSameType
if (!out) {
parseerror(parser, "failed to apply operand %s", op->op);
return false;
}
+ DEBUGSHUNTDO(printf("applied %s\n", op->op));
sy->out[sy->out_count++] = syexp(ctx, out);
return true;
}
-static bool parser_close_paren(parser_t *parser, shunt *sy)
+static bool parser_close_call(parser_t *parser, shunt *sy)
{
- if (!sy->ops_count) {
- parseerror(parser, "unmatched closing paren");
+ /* was a function call */
+ ast_expression *fun;
+ ast_call *call;
+
+ size_t fid;
+ size_t paramcount;
+
+ sy->ops_count--;
+ fid = sy->ops[sy->ops_count].off;
+
+ /* out[fid] is the function
+ * everything above is parameters...
+ * 0 params = nothing
+ * 1 params = ast_expression
+ * more = ast_block
+ */
+
+ if (sy->out_count < 1 || sy->out_count <= fid) {
+ parseerror(parser, "internal error: function call needs function and parameter list...");
return false;
}
- if (sy->ops[sy->ops_count-1].paren == 1) {
- parseerror(parser, "empty parenthesis expression");
+
+ fun = sy->out[fid].out;
+
+ call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
+ if (!call) {
+ parseerror(parser, "out of memory");
return false;
}
+
+ if (fid+1 == sy->out_count) {
+ /* no arguments */
+ paramcount = 0;
+ } else if (fid+2 == sy->out_count) {
+ ast_block *params;
+ sy->out_count--;
+ params = sy->out[sy->out_count].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;
+ }
+ } else {
+ paramcount = params->exprs_count;
+ MEM_VECTOR_MOVE(params, exprs, call, params);
+ ast_delete(params);
+ }
+ } else {
+ parseerror(parser, "invalid function call");
+ return false;
+ }
+
+ /* overwrite fid, the function, with a call */
+ sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
+
+ if (fun->expression.vtype != TYPE_FUNCTION) {
+ parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
+ return false;
+ }
+
+ if (!fun->expression.next) {
+ parseerror(parser, "could not determine function return type");
+ return false;
+ } else {
+ if (fun->expression.params_count != paramcount &&
+ !(fun->expression.variadic &&
+ fun->expression.params_count < paramcount))
+ {
+ ast_value *fval;
+ const char *fewmany = (fun->expression.params_count > paramcount) ? "few" : "many";
+
+ fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
+ if (opts_standard == COMPILER_GMQCC)
+ {
+ if (fval)
+ 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)fun->expression.params_count, (int)paramcount,
+ fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
+ else
+ parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
+ " -> `%s` has been declared here: %s:%i",
+ fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
+ fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
+ return false;
+ }
+ else
+ {
+ if (fval)
+ return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
+ "too %s parameters for call to %s: expected %i, got %i\n"
+ " -> `%s` has been declared here: %s:%i",
+ fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
+ fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
+ else
+ return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
+ "too %s parameters for function call: expected %i, got %i\n"
+ " -> `%s` has been declared here: %s:%i",
+ fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
+ fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
+ }
+ }
+ }
+
+ return true;
+}
+
+static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
+{
+ if (!sy->ops_count) {
+ parseerror(parser, "unmatched closing paren");
+ return false;
+ }
+ /* this would for bit a + (x) because there are no operators inside (x)
+ if (sy->ops[sy->ops_count-1].paren == 1) {
+ parseerror(parser, "empty parenthesis expression");
+ return false;
+ }
+ */
while (sy->ops_count) {
+ if (sy->ops[sy->ops_count-1].paren == 'f') {
+ if (!parser_close_call(parser, sy))
+ return false;
+ break;
+ }
if (sy->ops[sy->ops_count-1].paren == 1) {
sy->ops_count--;
- break;
+ return !functions_only;
}
if (!parser_sy_pop(parser, sy))
return false;
return true;
}
-static ast_expression* parser_expression(parser_t *parser)
+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)) {
+ parser->tok = TOKEN_OPERATOR;
+ return;
+ }
+ }
+}
+
+static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
{
ast_expression *expr = NULL;
shunt sy;
bool wantop = false;
+ bool gotmemberof = false;
+
+ /* count the parens because an if starts with one, so the
+ * end of a condition is an unmatched closing paren
+ */
+ int parens = 0;
MEM_VECTOR_INIT(&sy, out);
MEM_VECTOR_INIT(&sy, ops);
+ parser->lex->flags.noops = false;
+
+ parser_reclassify_token(parser);
+
while (true)
{
- if (!wantop)
+ if (gotmemberof)
+ gotmemberof = false;
+ else
+ parser->memberof = 0;
+
+ if (parser->tok == TOKEN_IDENT)
{
- bool nextwant = true;
- if (parser->tok == TOKEN_IDENT)
+ ast_expression *var;
+ if (wantop) {
+ parseerror(parser, "expected operator or end of statement");
+ goto onerr;
+ }
+ wantop = true;
+ /* variable */
+ if (opts_standard == COMPILER_GMQCC)
{
- /* variable */
- ast_value *var = parser_find_var(parser, parser_tokval(parser));
- if (!var) {
- parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
- goto onerr;
+ if (parser->memberof == TYPE_ENTITY) {
+ /* still get vars first since there could be a fieldpointer */
+ var = parser_find_var(parser, parser_tokval(parser));
+ if (!var)
+ var = parser_find_field(parser, parser_tokval(parser));
}
- if (!shunt_out_add(&sy, syval(parser_ctx(parser), var))) {
- parseerror(parser, "out of memory");
+ else if (parser->memberof == TYPE_VECTOR)
+ {
+ parseerror(parser, "TODO: implement effective vector member access");
goto onerr;
}
- }
- else if (parser->tok == TOKEN_FLOATCONST) {
- ast_value *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");
+ else if (parser->memberof) {
+ parseerror(parser, "namespace for member not found");
goto onerr;
}
+ else
+ var = parser_find_var(parser, parser_tokval(parser));
+ } else {
+ var = parser_find_var(parser, parser_tokval(parser));
+ if (!var)
+ var = parser_find_field(parser, parser_tokval(parser));
}
- else if (parser->tok == TOKEN_INTCONST) {
- ast_value *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;
- }
+ if (!var) {
+ parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
+ goto onerr;
}
- else if (parser->tok == '(') {
- nextwant = false; /* not expecting an operator next */
- if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1))) {
- parseerror(parser, "out of memory");
- goto onerr;
- }
+ if (ast_istype(var, ast_value))
+ ((ast_value*)var)->uses++;
+ if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
+ parseerror(parser, "out of memory");
+ goto onerr;
}
- else {
- /* TODO: prefix operators */
- parseerror(parser, "expected statement");
+ DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
+ }
+ else if (parser->tok == TOKEN_FLOATCONST) {
+ ast_value *val;
+ if (wantop) {
+ parseerror(parser, "expected operator or end of statement, got constant");
goto onerr;
}
- wantop = nextwant;
- parser->lex->flags.noops = !wantop;
- } else {
- if (parser->tok == '(') {
- /* we expected an operator, this is the function-call operator */
- if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f'))) {
- parseerror(parser, "out of memory");
- goto onerr;
- }
+ 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));
+ }
+ else if (parser->tok == TOKEN_INTCONST) {
+ ast_value *val;
+ if (wantop) {
+ parseerror(parser, "expected operator or end of statement, got constant");
+ goto onerr;
+ }
+ 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));
+ }
+ else if (parser->tok == TOKEN_STRINGCONST) {
+ ast_value *val;
+ if (wantop) {
+ parseerror(parser, "expected operator or end of statement, got constant");
+ goto onerr;
+ }
+ wantop = true;
+ val = parser_const_string(parser, parser_tokval(parser));
+ 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"));
+ }
+ else if (parser->tok == TOKEN_VECTORCONST) {
+ ast_value *val;
+ if (wantop) {
+ parseerror(parser, "expected operator or end of statement, got constant");
+ goto onerr;
}
- else if (parser->tok == ')') {
+ 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",
+ parser_token(parser)->constval.v.x,
+ parser_token(parser)->constval.v.y,
+ parser_token(parser)->constval.v.z));
+ }
+ 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"));
+ --parens;
+ if (parens < 0)
+ break;
/* we do expect an operator next */
/* closing an opening paren */
- if (!parser_close_paren(parser, &sy))
+ if (!parser_close_paren(parser, &sy, false))
+ goto onerr;
+ } else {
+ DEBUGSHUNTDO(printf("do[nop] )\n"));
+ --parens;
+ if (parens < 0)
+ break;
+ /* allowed for function calls */
+ if (!parser_close_paren(parser, &sy, true))
goto onerr;
}
- else if (parser->tok != TOKEN_OPERATOR) {
+ wantop = true;
+ }
+ else if (parser->tok != TOKEN_OPERATOR) {
+ if (wantop) {
parseerror(parser, "expected operator or end of statement");
goto onerr;
}
- 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) &&
- !(operators[o].flags & OP_SUFFIX) && /* remove this */
- !strcmp(parser_tokval(parser), operators[o].op))
- {
- break;
- }
- }
- if (o == operator_count) {
- /* no operator found... must be the end of the statement */
+ break;
+ }
+ 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 */
+ !strcmp(parser_tokval(parser), operators[o].op))
+ {
break;
}
- /* found an operator */
- op = &operators[o];
+ }
+ if (o == operator_count) {
+ /* no operator found... must be the end of the statement */
+ break;
+ }
+ /* found an operator */
+ op = &operators[o];
+ /* when declaring variables, a comma starts a new variable */
+ if (op->id == opid1(',') && !parens && stopatcomma) {
+ /* fixup the token */
+ parser->tok = ',';
+ break;
+ }
+
+ if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
+ olast = &operators[sy.ops[sy.ops_count-1].etype-1];
+
+ while (olast && (
+ (op->prec < olast->prec) ||
+ (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
+ {
+ if (!parser_sy_pop(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];
+ else
+ olast = NULL;
+ }
- while (olast && (
- (op->prec < olast->prec) ||
- (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
- {
- if (!parser_sy_pop(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 (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;
+ if (!prevex) {
+ parseerror(parser, "unexpected member operator");
+ goto onerr;
+ }
+ if (prevex->expression.vtype == TYPE_ENTITY)
+ parser->memberof = TYPE_ENTITY;
+ else if (prevex->expression.vtype == TYPE_VECTOR)
+ parser->memberof = TYPE_VECTOR;
+ else {
+ parseerror(parser, "type error: type has no members");
+ goto onerr;
}
+ gotmemberof = true;
+ }
+ if (op->id == opid1('(')) {
+ if (wantop) {
+ DEBUGSHUNTDO(printf("push [op] (\n"));
+ ++parens;
+ /* 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;
+ }
+ } else {
+ ++parens;
+ if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
+ parseerror(parser, "out of memory");
+ goto onerr;
+ }
+ DEBUGSHUNTDO(printf("push [nop] (\n"));
+ }
+ wantop = false;
+ } else {
+ DEBUGSHUNTDO(printf("push operator %s\n", op->op));
if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
goto onerr;
+ wantop = false;
}
- wantop = false;
- parser->lex->flags.noops = true;
}
if (!parser_next(parser)) {
goto onerr;
}
- if (parser->tok == ';') {
+ if (parser->tok == ';' || parser->tok == ']') {
break;
}
}
- if (!parser_next(parser)) {
- parseerror(parser, "Unexpected end of file");
- goto onerr;
- }
while (sy.ops_count) {
if (!parser_sy_pop(parser, &sy))
expr = sy.out[0].out;
MEM_VECTOR_CLEAR(&sy, out);
MEM_VECTOR_CLEAR(&sy, ops);
+ DEBUGSHUNTDO(printf("shunt done\n"));
return expr;
onerr:
return NULL;
}
-static bool parser_variable(parser_t *parser, ast_block *localblock);
-static bool parser_body_do(parser_t *parser, ast_block *block)
+static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
+{
+ ast_expression *e = parse_expression_leave(parser, stopatcomma);
+ if (!e)
+ return NULL;
+ if (!parser_next(parser)) {
+ ast_delete(e);
+ return NULL;
+ }
+ return e;
+}
+
+static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_ifthen *ifthen;
+ ast_expression *cond, *ontrue, *onfalse = NULL;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ /* skip the 'if' and check for opening paren */
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected 'if' condition in parenthesis");
+ return false;
+ }
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'if' condition after opening paren");
+ return false;
+ }
+ /* parse the condition */
+ cond = parse_expression_leave(parser, false);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'if' condition");
+ ast_delete(cond);
+ return false;
+ }
+ /* parse into the 'then' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected statement for on-true branch of 'if'");
+ ast_delete(cond);
+ return false;
+ }
+ ontrue = parse_statement_or_block(parser);
+ if (!ontrue) {
+ ast_delete(cond);
+ return false;
+ }
+ /* check for an else */
+ if (!strcmp(parser_tokval(parser), "else")) {
+ /* parse into the 'else' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected on-false branch after 'else'");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+ onfalse = parse_statement_or_block(parser);
+ if (!onfalse) {
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+ }
+
+ ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
+ *out = (ast_expression*)ifthen;
+ return true;
+}
+
+static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *cond, *ontrue;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ /* skip the 'while' and check for opening paren */
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected 'while' condition in parenthesis");
+ return false;
+ }
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'while' condition after opening paren");
+ return false;
+ }
+ /* parse the condition */
+ cond = parse_expression_leave(parser, false);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'while' condition");
+ ast_delete(cond);
+ return false;
+ }
+ /* parse into the 'then' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected while-loop body");
+ ast_delete(cond);
+ return false;
+ }
+ ontrue = parse_statement_or_block(parser);
+ if (!ontrue) {
+ ast_delete(cond);
+ return false;
+ }
+
+ aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
+ *out = (ast_expression*)aloop;
+ return true;
+}
+
+static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *cond, *ontrue;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ /* skip the 'do' and get the body */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected loop body");
+ return false;
+ }
+ ontrue = parse_statement_or_block(parser);
+ if (!ontrue)
+ return false;
+
+ /* expect the "while" */
+ if (parser->tok != TOKEN_KEYWORD ||
+ strcmp(parser_tokval(parser), "while"))
+ {
+ parseerror(parser, "expected 'while' and condition");
+ ast_delete(ontrue);
+ return false;
+ }
+
+ /* skip the 'while' and check for opening paren */
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected 'while' condition in parenthesis");
+ ast_delete(ontrue);
+ return false;
+ }
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'while' condition after opening paren");
+ ast_delete(ontrue);
+ return false;
+ }
+ /* parse the condition */
+ cond = parse_expression_leave(parser, false);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'while' condition");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+ /* parse on */
+ if (!parser_next(parser) || parser->tok != ';') {
+ parseerror(parser, "expected semicolon after condition");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+
+ aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
+ *out = (ast_expression*)aloop;
+ return true;
+}
+
+static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *initexpr, *cond, *increment, *ontrue;
+ size_t oldblocklocal;
+ bool retval = true;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ oldblocklocal = parser->blocklocal;
+ parser->blocklocal = parser->locals_count;
+
+ initexpr = NULL;
+ cond = NULL;
+ increment = NULL;
+ ontrue = NULL;
+
+ /* skip the 'while' and check for opening paren */
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected 'for' expressions in parenthesis");
+ goto onerr;
+ }
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'for' initializer after opening paren");
+ goto onerr;
+ }
+
+ if (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 (!parse_variable(parser, block))
+ goto onerr;
+ }
+ else if (parser->tok != ';')
+ {
+ initexpr = parse_expression_leave(parser, false);
+ if (!initexpr)
+ goto onerr;
+ }
+
+ /* move on to condition */
+ if (parser->tok != ';') {
+ parseerror(parser, "expected semicolon after for-loop initializer");
+ goto onerr;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected for-loop condition");
+ goto onerr;
+ }
+
+ /* parse the condition */
+ if (parser->tok != ';') {
+ cond = parse_expression_leave(parser, false);
+ if (!cond)
+ goto onerr;
+ }
+
+ /* move on to incrementor */
+ if (parser->tok != ';') {
+ parseerror(parser, "expected semicolon after for-loop initializer");
+ goto onerr;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected for-loop condition");
+ goto onerr;
+ }
+
+ /* parse the incrementor */
+ if (parser->tok != ')') {
+ increment = parse_expression_leave(parser, false);
+ if (!increment)
+ goto onerr;
+ if (!ast_istype(increment, ast_store) &&
+ !ast_istype(increment, ast_call) &&
+ !ast_istype(increment, ast_binstore))
+ {
+ if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
+ goto onerr;
+ }
+ }
+
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'for-loop' incrementor");
+ goto onerr;
+ }
+ /* parse into the 'then' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected for-loop body");
+ goto onerr;
+ }
+ ontrue = parse_statement_or_block(parser);
+ if (!ontrue) {
+ goto onerr;
+ }
+
+ aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
+ *out = (ast_expression*)aloop;
+
+ while (parser->locals_count > parser->blocklocal)
+ retval = retval && parser_pop_local(parser);
+ parser->blocklocal = oldblocklocal;
+ return retval;
+onerr:
+ if (initexpr) ast_delete(initexpr);
+ if (cond) ast_delete(cond);
+ if (increment) ast_delete(increment);
+ while (parser->locals_count > parser->blocklocal)
+ (void)!parser_pop_local(parser);
+ parser->blocklocal = oldblocklocal;
+ return false;
+}
+
+static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
{
if (parser->tok == TOKEN_TYPENAME)
{
/* local variable */
- if (!parser_variable(parser, block))
+ 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))
+ return false;
+ *out = NULL;
return true;
}
else if (parser->tok == TOKEN_KEYWORD)
{
- if (!strcmp(parser_tokval(parser), "return"))
+ if (!strcmp(parser_tokval(parser), "local"))
{
- ast_expression *exp;
- ast_return *ret;
-
+ if (!block) {
+ parseerror(parser, "cannot declare a local variable here");
+ return false;
+ }
if (!parser_next(parser)) {
- parseerror(parser, "expected return expression");
+ parseerror(parser, "expected variable declaration");
return false;
}
-
- exp = parser_expression(parser);
- if (!exp)
+ if (!parse_variable(parser, block))
return false;
- ret = ast_return_new(exp->expression.node.context, exp);
- if (!ret) {
- ast_delete(exp);
+ *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;
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected return expression");
return false;
}
- if (!ast_block_exprs_add(block, (ast_expression*)ret)) {
- ast_delete(ret);
- 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");
+ }
+
+ ret = ast_return_new(exp->expression.node.context, exp);
+ if (!ret) {
+ ast_delete(exp);
+ 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");
+ }
+ ret = ast_return_new(parser_ctx(parser), NULL);
}
+ *out = (ast_expression*)ret;
return true;
}
+ 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);
+ }
parseerror(parser, "Unexpected keyword");
return false;
}
else if (parser->tok == '{')
{
- /* a block */
- parseerror(parser, "TODO: inner blocks: %s", parser_tokval(parser));
- return false;
+ ast_block *inner;
+ inner = parse_block(parser, false);
+ if (!inner)
+ return false;
+ *out = (ast_expression*)inner;
+ return true;
}
else
{
- ast_expression *exp = parser_expression(parser);
+ ast_expression *exp = parse_expression(parser, false);
if (!exp)
return false;
- if (!ast_block_exprs_add(block, exp)) {
- ast_delete(exp);
- return false;
+ *out = exp;
+ if (!ast_istype(exp, ast_store) &&
+ !ast_istype(exp, ast_call) &&
+ !ast_istype(exp, ast_binstore))
+ {
+ if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
+ return false;
}
return true;
}
}
-static ast_block* parser_parse_block(parser_t *parser)
+static bool GMQCC_WARN parser_pop_local(parser_t *parser)
+{
+ varentry_t *ve;
+ parser->locals_count--;
+
+ ve = &parser->locals[parser->locals_count];
+ if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
+ if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
+ return false;
+ }
+ mem_d(parser->locals[parser->locals_count].name);
+ return true;
+}
+
+static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
{
size_t oldblocklocal;
- ast_block *block = NULL;
+ bool retval = true;
oldblocklocal = parser->blocklocal;
parser->blocklocal = parser->locals_count;
goto cleanup;
}
- block = ast_block_new(parser_ctx(parser));
-
while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
{
+ ast_expression *expr;
if (parser->tok == '}')
break;
- if (!parser_body_do(parser, block)) {
- ast_block_delete(block);
+ if (!parse_statement(parser, block, &expr)) {
+ parseerror(parser, "parse error");
+ block = NULL;
+ goto cleanup;
+ }
+ if (!expr)
+ continue;
+ if (!ast_block_exprs_add(block, expr)) {
+ ast_delete(expr);
block = NULL;
goto cleanup;
}
}
- if (parser->tok != '}') {
+ if (parser->tok != '}') {
+ block = NULL;
+ } else {
+ if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
+ {
+ if (!block->exprs_count ||
+ !ast_istype(block->exprs[block->exprs_count-1], ast_return))
+ {
+ if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
+ block = NULL;
+ goto cleanup;
+ }
+ }
+ }
+ (void)parser_next(parser);
+ }
+
+cleanup:
+ while (parser->locals_count > parser->blocklocal)
+ retval = retval && parser_pop_local(parser);
+ parser->blocklocal = oldblocklocal;
+ return !!block;
+}
+
+static ast_block* parse_block(parser_t *parser, bool warnreturn)
+{
+ ast_block *block;
+ block = ast_block_new(parser_ctx(parser));
+ if (!block)
+ return NULL;
+ if (!parse_block_into(parser, block, warnreturn)) {
+ ast_block_delete(block);
+ return NULL;
+ }
+ return block;
+}
+
+static ast_expression* parse_statement_or_block(parser_t *parser)
+{
+ ast_expression *expr = NULL;
+ if (parser->tok == '{')
+ return (ast_expression*)parse_block(parser, false);
+ if (!parse_statement(parser, NULL, &expr))
+ return NULL;
+ return expr;
+}
+
+/* loop method */
+static bool create_vector_members(parser_t *parser, ast_value *var, varentry_t *ve)
+{
+ size_t i;
+ size_t len = strlen(var->name);
+
+ for (i = 0; i < 3; ++i) {
+ ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
+ if (!ve[i].var)
+ break;
+
+ ve[i].name = (char*)mem_a(len+3);
+ if (!ve[i].name) {
+ ast_delete(ve[i].var);
+ break;
+ }
+
+ memcpy(ve[i].name, var->name, len);
+ ve[i].name[len] = '_';
+ ve[i].name[len+1] = 'x'+i;
+ ve[i].name[len+2] = 0;
+ }
+ if (i == 3)
+ return true;
+
+ /* unroll */
+ do {
+ --i;
+ mem_d(ve[i].name);
+ ast_delete(ve[i].var);
+ ve[i].name = NULL;
+ ve[i].var = NULL;
+ } 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, *fld_nextthink, *fld_frame;
+ ast_expression *gbl_time, *gbl_self;
+ bool has_frame_think;
+
+ bool retval = true;
+
+ has_frame_think = false;
+ old = parser->function;
+
+ if (var->expression.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 )->isconst) {
+ 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 */
+ varentry_t varent;
+ 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;
+ }
+
+ varent.var = (ast_expression*)thinkfunc;
+ varent.name = util_strdup(thinkfunc->name);
+ if (!parser_t_globals_add(parser, varent)) {
+ ast_unref(framenum);
+ ast_delete(thinkfunc);
+ return false;
+ }
+ 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 (retval && !ast_block_exprs_add(block, (ast_expression*)store_frame)) {
+ ast_delete(store_frame);
+ ast_delete(store_nextthink);
+ ast_delete(store_think);
+ retval = false;
+ }
+
+ if (retval && !ast_block_exprs_add(block, (ast_expression*)store_nextthink)) {
+ ast_delete(store_nextthink);
+ ast_delete(store_think);
+ retval = false;
+ }
+
+ if (retval && !ast_block_exprs_add(block, (ast_expression*)store_think) )
+ {
+ ast_delete(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;
+ }
+ }
+
+ for (parami = 0; parami < var->expression.params_count; ++parami) {
+ size_t e;
+ varentry_t ve[3];
+ ast_value *param = var->expression.params[parami];
+
+ 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, ve)) {
+ ast_block_delete(block);
+ return false;
+ }
+
+ for (e = 0; e < 3; ++e) {
+ if (!parser_t_locals_add(parser, ve[e]))
+ break;
+ if (!ast_block_collect(block, ve[e].var)) {
+ parser->locals_count--;
+ break;
+ }
+ ve[e].var = NULL; /* collected */
+ }
+ if (e != e) {
+ parser->locals -= e;
+ do {
+ mem_d(ve[e].name);
+ --e;
+ } while (e);
+ ast_block_delete(block);
+ return false;
+ }
+ }
+
+ 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;
+ }
+ if (!parser_t_functions_add(parser, func)) {
+ parseerror(parser, "failed to allocate slot for function `%s`", var->name);
+ ast_block_delete(block);
+ goto enderrfn;
+ }
+
+ parser->function = func;
+ if (!parse_block_into(parser, block, true)) {
ast_block_delete(block);
- block = NULL;
- } else {
- (void)parser_next(parser);
+ goto enderrfn;
}
-cleanup:
- parser->blocklocal = oldblocklocal;
- return block;
+ if (!ast_function_blocks_add(func, block)) {
+ ast_block_delete(block);
+ goto enderrfn;
+ }
+
+ parser->function = old;
+ while (parser->locals_count)
+ retval = retval && parser_pop_local(parser);
+
+ 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:
+ ast_function_delete(func);
+ var->constval.vfunc = NULL;
+
+enderr:
+ while (parser->locals_count) {
+ parser->locals_count--;
+ mem_d(parser->locals[parser->locals_count].name);
+ }
+ parser->function = old;
+ return false;
}
-static bool parser_variable(parser_t *parser, ast_block *localblock)
+static bool parse_variable(parser_t *parser, ast_block *localblock)
{
- bool isfunc = false;
- ast_function *func = NULL;
- lex_ctx ctx;
- ast_value *var;
+ bool isfunc = false;
+ lex_ctx ctx;
+
+ ast_value *var = NULL;
+ bool cleanvar = false;
+
+ varentry_t varent;
+ varentry_t ve[3];
+
+ ast_expression *olddecl;
+
+ ast_value *typevar;
+
+ bool hadproto;
+ bool isparam;
+
+ bool retval = true;
+
+ /* go */
int basetype = parser_token(parser)->constval.t;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected variable definition");
+ return false;
+ }
+
+ typevar = parse_type(parser, basetype, &isfunc);
+ if (!typevar)
+ return false;
+
while (true)
{
- if (!parser_next(parser)) { /* skip basetype or comma */
- parseerror(parser, "expected variable declaration");
- return false;
- }
+ hadproto = false;
+ olddecl = NULL;
+ isparam = false;
+ varent.name = NULL;
+
+ ve[0].name = ve[1].name = ve[2].name = NULL;
+ ve[0].var = ve[1].var = ve[2].var = NULL;
- isfunc = false;
- func = NULL;
ctx = parser_ctx(parser);
- var = parser_parse_type(parser, basetype, &isfunc);
+ var = ast_value_copy(typevar);
+ cleanvar = true;
- if (!var)
- return false;
+ if (!var) {
+ parseerror(parser, "failed to create variable");
+ retval = false;
+ goto cleanup;
+ }
if (parser->tok != TOKEN_IDENT) {
- parseerror(parser, "expected variable name\n");
- return false;
+ parseerror(parser, "expected variable name");
+ retval = false;
+ goto cleanup;
}
- if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
- ast_value_delete(var);
- parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
- return false;
- }
+ if (!isfunc) {
+ if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
+ parseerror(parser, "global `%s` already declared here: %s:%i",
+ parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
+ retval = false;
+ goto cleanup;
+ }
- if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
- ast_value_delete(var);
- parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
- return false;
+ if (localblock) {
+ olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal, &isparam);
+ if (opts_standard == COMPILER_GMQCC)
+ {
+ if (olddecl)
+ {
+ if (!isparam) {
+ parseerror(parser, "local `%s` already declared here: %s:%i",
+ parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
+ retval = false;
+ goto cleanup;
+ }
+ }
+
+ if( (!isparam && olddecl) ||
+ (olddecl = parser_find_local(parser, parser_tokval(parser), 0, &isparam))
+ )
+ {
+ if (parsewarning(parser, WARN_LOCAL_SHADOWS,
+ "local `%s` is shadowing a parameter", parser_tokval(parser)))
+ {
+ parseerror(parser, "local `%s` already declared here: %s:%i",
+ parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
+ retval = false;
+ goto cleanup;
+ }
+ }
+ }
+ else
+ {
+ if (olddecl)
+ {
+ ast_value_delete(var);
+ var = NULL;
+ if (isparam &&
+ parsewarning(parser, WARN_LOCAL_SHADOWS,
+ "a parameter is shadowing local `%s`", parser_tokval(parser)))
+ {
+ retval = false;
+ goto cleanup;
+ }
+ else if (!isparam)
+ {
+ parseerror(parser, "local `%s` already declared here: %s:%i",
+ parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
+ retval = false;
+ goto cleanup;
+ }
+ goto nextvar;
+ }
+ }
+ }
}
if (!ast_value_set_name(var, parser_tokval(parser))) {
parseerror(parser, "failed to set variable name\n");
- ast_value_delete(var);
- return false;
+ retval = false;
+ goto cleanup;
}
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)) {
+ /* vector v;
+ * void() v_x = {}
+ */
+ parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
+ parser_tokval(parser));
+ 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 (!fval) {
+ retval = false;
+ goto cleanup;
}
fval->expression.next = (ast_expression*)var;
- MEM_VECTOR_MOVE(var, params, fval, params);
+ MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
+ fval->expression.variadic = var->expression.variadic;
+ var = NULL;
- if (!parser_t_functions_add(parser, func)) {
- ast_value_delete(var);
- if (fval) ast_value_delete(fval);
- if (func) ast_function_delete(func);
- return false;
+ /* 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_value_delete(fval);
+ retval = false;
+ goto cleanup;
+ }
+ /* 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);
+ /* copy the new context */
+ ast_ctx(proto) = ast_ctx(fval);
+
+ /* now ditch the rest of the new data */
+ ast_value_delete(fval);
+ fval = proto;
+ hadproto = true;
}
var = fval;
}
- if ( (!localblock && !parser_t_globals_add(parser, var)) ||
- ( localblock && !parser_t_locals_add(parser, var)) )
- {
- ast_value_delete(var);
- return false;
- }
- if (localblock && !ast_block_locals_add(localblock, var))
- {
- parser->locals_count--;
- ast_value_delete(var);
- return false;
- }
+ if (!hadproto) {
+ varent.name = util_strdup(var->name);
+ varent.var = (ast_expression*)var;
+
+ if (!localblock) {
+ if (!(retval = parser_t_globals_add(parser, varent)))
+ goto cleanup;
+ } else {
+ if (!(retval = parser_t_locals_add(parser, varent)))
+ goto cleanup;
+ if (!(retval = ast_block_locals_add(localblock, var))) {
+ parser->locals_count--;
+ goto cleanup;
+ }
+ }
- if (!parser_next(parser)) {
- ast_value_delete(var);
- return false;
+ if (var->expression.vtype == TYPE_VECTOR)
+ {
+ size_t e;
+ if (!create_vector_members(parser, var, ve)) {
+ retval = false;
+ goto cleanup;
+ }
+
+ if (!localblock) {
+ for (e = 0; e < 3; ++e) {
+ if (!(retval = parser_t_globals_add(parser, ve[e])))
+ break;
+ }
+ if (!retval) {
+ parser->globals_count -= e+1;
+ goto cleanup;
+ }
+ } else {
+ for (e = 0; e < 3; ++e) {
+ if (!(retval = parser_t_locals_add(parser, ve[e])))
+ break;
+ if (!(retval = ast_block_collect(localblock, ve[e].var)))
+ break;
+ ve[e].var = NULL; /* from here it's being collected in the block */
+ }
+ if (!retval) {
+ parser->locals_count -= e+1;
+ localblock->locals_count--;
+ goto cleanup;
+ }
+ }
+ ve[0].name = ve[1].name = ve[2].name = NULL;
+ ve[0].var = ve[1].var = ve[2].var = NULL;
+ }
+ cleanvar = false;
+ varent.name = NULL;
}
+nextvar:
+ if (!(retval = parser_next(parser)))
+ goto cleanup;
+
if (parser->tok == ';') {
- if (!parser_next(parser))
- return parser->tok == TOKEN_EOF;
- return true;
+ ast_value_delete(typevar);
+ return parser_next(parser);
}
if (parser->tok == ',') {
/* another var */
+ if (!(retval = parser_next(parser)))
+ goto cleanup;
continue;
}
+ /* NOTE: only 'typevar' needs to be deleted from here on, so 'cleanup' won't be used
+ * to avoid having too many gotos
+ */
+ 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) )
+ {
+ ast_value_delete(typevar);
+ return false;
+ }
+ }
+
if (parser->tok != '=') {
- parseerror(parser, "expected '=' or ';'");
+ if (opts_standard == COMPILER_QCC)
+ parseerror(parser, "missing semicolon");
+ else
+ parseerror(parser, "missing semicolon or initializer");
+ ast_value_delete(typevar);
return false;
}
- if (!parser_next(parser))
+ if (!parser_next(parser)) {
+ ast_value_delete(typevar);
return false;
+ }
if (parser->tok == '#') {
+ ast_function *func;
+
if (localblock) {
parseerror(parser, "cannot declare builtins within functions");
+ ast_value_delete(typevar);
return false;
}
- if (!isfunc || !func) {
+ if (!isfunc) {
parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
+ ast_value_delete(typevar);
return false;
}
if (!parser_next(parser)) {
parseerror(parser, "expected builtin number");
+ ast_value_delete(typevar);
return false;
}
if (parser->tok != TOKEN_INTCONST) {
parseerror(parser, "builtin number must be an integer constant");
+ ast_value_delete(typevar);
return false;
}
if (parser_token(parser)->constval.i <= 0) {
parseerror(parser, "builtin number must be positive integer greater than zero");
+ ast_value_delete(typevar);
+ return false;
+ }
+
+ func = ast_function_new(ast_ctx(var), var->name, var);
+ if (!func) {
+ parseerror(parser, "failed to allocate function for `%s`", var->name);
+ ast_value_delete(typevar);
+ return false;
+ }
+ if (!parser_t_functions_add(parser, func)) {
+ parseerror(parser, "failed to allocate slot for function `%s`", var->name);
+ ast_function_delete(func);
+ var->constval.vfunc = NULL;
+ ast_value_delete(typevar);
return false;
}
func->builtin = -parser_token(parser)->constval.i;
- } else if (parser->tok == '{') {
- /* function body */
- ast_block *block;
- ast_function *old = parser->function;
+ if (!parser_next(parser)) {
+ ast_value_delete(typevar);
+ return false;
+ }
+ }
+ else if (parser->tok == '{' || parser->tok == '[')
+ {
+ ast_value_delete(typevar);
if (localblock) {
parseerror(parser, "cannot declare functions within functions");
return false;
}
- parser->function = func;
- block = parser_parse_block(parser);
- parser->function = old;
-
- if (!block)
- return false;
-
- if (!ast_function_blocks_add(func, block)) {
- ast_block_delete(block);
+ if (!parse_function_body(parser, var)) {
return false;
}
return true;
} else {
- parseerror(parser, "TODO, const assignment");
- }
+ ast_expression *cexp;
+ ast_value *cval;
- if (!parser_next(parser))
- return false;
+ cexp = parse_expression_leave(parser, true);
+ if (!cexp) {
+ ast_value_delete(typevar);
+ return false;
+ }
+
+ 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;
+ if (cval->expression.vtype == TYPE_STRING)
+ var->constval.vstring = parser_strdup(cval->constval.vstring);
+ else
+ memcpy(&var->constval, &cval->constval, sizeof(var->constval));
+ ast_unref(cval);
+ }
+ }
if (parser->tok == ',') {
/* another */
}
if (parser->tok != ';') {
- parseerror(parser, "expected semicolon");
+ parseerror(parser, "missing semicolon");
+ ast_value_delete(typevar);
return false;
}
(void)parser_next(parser);
+ ast_value_delete(typevar);
return true;
}
+
+cleanup:
+ ast_delete(typevar);
+ if (var && cleanvar) ast_delete(var);
+ if (varent.name) mem_d(varent.name);
+ if (ve[0].name) mem_d(ve[0].name);
+ if (ve[1].name) mem_d(ve[1].name);
+ if (ve[2].name) mem_d(ve[2].name);
+ if (ve[0].var) mem_d(ve[0].var);
+ if (ve[1].var) mem_d(ve[1].var);
+ if (ve[2].var) mem_d(ve[2].var);
+
+ return retval;
}
-static bool parser_do(parser_t *parser)
+static bool parser_global_statement(parser_t *parser)
{
if (parser->tok == TOKEN_TYPENAME)
{
- return parser_variable(parser, NULL);
+ return parse_variable(parser, NULL);
}
else if (parser->tok == TOKEN_KEYWORD)
{
}
else if (parser->tok == '.')
{
+ 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 */
- return false;
+ 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 definition");
+ return false;
+ }
+
+ /* parse the field type fully */
+ typevar = var = 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);
+ fval->expression.variadic = var->expression.variadic;
+ 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 ve[3];
+ if (!create_vector_members(parser, fld, ve)) {
+ ast_delete(fld);
+ return false;
+ }
+ (void)!parser_t_fields_add(parser, ve[0]);
+ (void)!parser_t_fields_add(parser, ve[1]);
+ (void)!parser_t_fields_add(parser, ve[2]);
+ }
+
+nextfield:
+ 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");
+ return false;
+ }
+ }
+ ast_delete(typevar);
+
+ /* skip the semicolon */
+ if (!parser_next(parser))
+ return parser->tok == TOKEN_EOF;
+
+ return true;
+ }
+ else if (parser->tok == '$')
+ {
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error");
+ return false;
+ }
}
else
{
- parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
+ parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
return false;
}
return true;
}
-bool parser_compile(const char *filename)
-{
- size_t i;
- parser_t *parser;
- ir_builder *ir;
+static parser_t *parser;
+bool parser_init()
+{
parser = (parser_t*)mem_a(sizeof(parser_t));
if (!parser)
return false;
- memset(parser, 0, sizeof(parser));
+ memset(parser, 0, sizeof(*parser));
+ return true;
+}
- MEM_VECTOR_INIT(parser, globals);
- MEM_VECTOR_INIT(parser, locals);
+bool parser_compile(const char *filename)
+{
parser->lex = lex_open(filename);
-
if (!parser->lex) {
printf("failed to open file \"%s\"\n", filename);
return false;
{
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
- parseerror(parser, "parse error\n");
+ else if (!parser->errors)
+ parseerror(parser, "parse error");
lex_close(parser->lex);
- mem_d(parser);
+ parser->lex = NULL;
return false;
}
}
+ } else {
+ parseerror(parser, "parse error");
+ lex_close(parser->lex);
+ parser->lex = NULL;
+ return false;
}
lex_close(parser->lex);
+ parser->lex = NULL;
- ir = ir_builder_new("gmqcc_out");
- if (!ir) {
- printf("failed to allocate builder\n");
- goto cleanup;
- }
+ return !parser->errors;
+}
+void parser_cleanup()
+{
+ size_t i;
+ for (i = 0; i < parser->functions_count; ++i) {
+ ast_delete(parser->functions[i]);
+ }
+ for (i = 0; i < parser->imm_vector_count; ++i) {
+ ast_delete(parser->imm_vector[i]);
+ }
+ for (i = 0; i < parser->imm_string_count; ++i) {
+ ast_delete(parser->imm_string[i]);
+ }
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);
- }
+ 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 < parser->globals_count; ++i) {
- if (!ast_global_codegen(parser->globals[i], ir)) {
- printf("failed to generate global %s\n", parser->globals[i]->name);
- }
+ ast_delete(parser->globals[i].var);
+ mem_d(parser->globals[i].name);
}
- for (i = 0; i < parser->functions_count; ++i) {
- if (!ast_function_codegen(parser->functions[i], ir)) {
- printf("failed to generate function %s\n", parser->functions[i]->name);
+ 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);
+
+ mem_d(parser);
+}
+
+bool parser_finish(const char *output)
+{
+ 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");
+ 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);
+ 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 < parser->globals_count; ++i) {
+ ast_value *asvalue;
+ if (!ast_istype(parser->globals[i].var, ast_value))
+ continue;
+ asvalue = (ast_value*)(parser->globals[i].var);
+ if (!asvalue->uses && !asvalue->isconst && 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)) {
+ printf("failed to generate global %s\n", parser->globals[i].name);
+ ir_builder_delete(ir);
+ return false;
+ }
}
- if (!ir_function_finalize(parser->functions[i]->ir_func)) {
- printf("failed to finalize function %s\n", parser->functions[i]->name);
+ 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);
+ 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);
+ 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);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ for (i = 0; i < parser->functions_count; ++i) {
+ if (!ast_function_codegen(parser->functions[i], ir)) {
+ printf("failed to generate function %s\n", parser->functions[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ if (!ir_function_finalize(parser->functions[i]->ir_func)) {
+ printf("failed to finalize function %s\n", parser->functions[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
}
- }
- ir_builder_dump(ir, printf);
+ if (retval) {
+ if (opts_dump)
+ ir_builder_dump(ir, printf);
-cleanup:
- for (i = 0; i < parser->globals_count; ++i) {
- ast_value_delete(parser->globals[i]);
+ if (!ir_builder_generate(ir, output)) {
+ printf("*** failed to generate output file\n");
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+
+ ir_builder_delete(ir);
+ return retval;
}
- MEM_VECTOR_CLEAR(parser, globals);
- mem_d(parser);
- return true;
+ printf("*** there were compile errors\n");
+ return false;
}
projects / xonotic / gmqcc.git / blobdiff