MEM_VECTOR_MAKE(ast_value*, globals);
MEM_VECTOR_MAKE(ast_function*, functions);
+ MEM_VECTOR_MAKE(ast_value*, imm_float);
ast_function *function;
MEM_VECTOR_MAKE(ast_value*, locals);
} parser_t;
MEM_VEC_FUNCTIONS(parser_t, ast_value*, globals)
+MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
MEM_VEC_FUNCTIONS(parser_t, ast_value*, locals)
MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
#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)
+{
+ size_t i;
+ ast_value *out;
+ for (i = 0; i < parser->imm_float_count; ++i) {
+ if (parser->imm_float[i]->constval.vfloat == d)
+ return parser->imm_float[i];
+ }
+ out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
+ out->isconst = true;
+ out->constval.vfloat = d;
+ if (!parser_t_imm_float_add(parser, out)) {
+ ast_value_delete(out);
+ return NULL;
+ }
+ return out;
+}
+
ast_value* parser_find_global(parser_t *parser, const char *name)
{
size_t i;
ast_value* parser_find_local(parser_t *parser, const char *name, size_t upto)
{
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];
}
+ fun = parser->function->vtype;
+ for (i = 0; i < fun->params_count; ++i) {
+ if (!strcmp(fun->params[i]->name, name))
+ return fun->params[i];
+ }
return NULL;
}
lex_ctx ctx = parser_ctx(parser);
int vtype = basetype;
int temptype;
+ size_t i;
MEM_VECTOR_INIT(¶ms, p);
ast_value *param;
bool dummy;
- if (!parser_next(parser)) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
- }
+ if (!parser_next(parser))
+ goto on_error;
if (parser->tok == ')')
break;
temptype = parser_token(parser)->constval.t;
- if (!parser_next(parser)) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
- }
+ if (!parser_next(parser))
+ goto on_error;
+
param = parser_parse_type(parser, temptype, &dummy);
(void)dummy;
- if (!param) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
+ if (!param)
+ goto on_error;
+
+ 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 (!paramlist_t_p_add(¶ms, param)) {
- MEM_VECTOR_CLEAR(¶ms, p);
parseerror(parser, "Out of memory while parsing typename");
- return NULL;
+ goto on_error;
}
if (parser->tok == ',')
continue;
if (parser->tok == ')')
break;
- MEM_VECTOR_CLEAR(¶ms, p);
parseerror(parser, "Unexpected token");
- return NULL;
- }
- if (!parser_next(parser)) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
+ goto on_error;
}
+ if (!parser_next(parser))
+ goto on_error;
}
var = ast_value_new(ctx, "<unnamed>", vtype);
- if (!var) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
- }
+ if (!var)
+ goto on_error;
MEM_VECTOR_MOVE(¶ms, p, var, 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;
}
typedef struct
{
- int etype; /* 0 = expression, others are operators */
- ast_expression* out;
+ size_t etype; /* 0 = expression, others are operators */
+ int paren;
+ ast_expression *out;
+ ast_value *value; /* need to know if we can assign */
+ lex_ctx ctx;
} sy_elem;
typedef struct
{
MEM_VECTOR_MAKE(sy_elem, out);
MEM_VECTOR_MAKE(sy_elem, ops);
-} shyntingyard;
+} shunt;
+MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
+MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
+
+static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
+ sy_elem e;
+ e.etype = 0;
+ e.out = v;
+ e.value = NULL;
+ e.ctx = ctx;
+ e.paren = 0;
+ return e;
+}
+static sy_elem syval(lex_ctx ctx, ast_value *v) {
+ sy_elem e;
+ e.etype = 0;
+ e.out = (ast_expression*)v;
+ e.value = v;
+ e.ctx = ctx;
+ e.paren = 0;
+ return e;
+}
-static bool parser_expression(parser_t *parser, ast_block *block)
+static sy_elem syop(lex_ctx ctx, const oper_info *op) {
+ sy_elem e;
+ e.etype = 1 + (op - operators);
+ e.out = NULL;
+ e.value = NULL;
+ e.ctx = ctx;
+ e.paren = 0;
+ return e;
+}
+
+static sy_elem syparen(lex_ctx ctx, int p) {
+ sy_elem e;
+ e.etype = 0;
+ e.out = NULL;
+ e.value = NULL;
+ e.ctx = ctx;
+ e.paren = p;
+ return e;
+}
+
+static bool parser_sy_pop(parser_t *parser, shunt *sy)
{
- shyntingyard sy;
+ const oper_info *op;
+ lex_ctx ctx;
+ ast_expression *out = NULL;
+ ast_expression *exprs[3];
+ ast_value *vars[3];
+ size_t i;
+
+ if (!sy->ops_count) {
+ parseerror(parser, "internal error: missing operator");
+ return false;
+ }
+
+ if (sy->ops[sy->ops_count-1].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;
+
+ if (sy->out_count < op->operands) {
+ parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
+ return false;
+ }
+
+ sy->ops_count--;
+
+ 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;
+ }
+
+ printf("Applying operator %s\n", op->op);
+ switch (op->id)
+ {
+ default:
+ parseerror(parser, "internal error: unhandled operand");
+ return false;
+
+ case opid1('+'):
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
+ parseerror(parser, "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]);
+ break;
+ case TYPE_VECTOR:
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
+ break;
+ default:
+ parseerror(parser, "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",
+ 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]);
+ break;
+ case TYPE_VECTOR:
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
+ break;
+ default:
+ parseerror(parser, "Cannot add type %s from %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_VECTOR &&
+ exprs[0]->expression.vtype != TYPE_FLOAT &&
+ exprs[1]->expression.vtype != TYPE_VECTOR &&
+ exprs[1]->expression.vtype != TYPE_FLOAT)
+ {
+ parseerror(parser, "Cannot multiply 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:
+ if (exprs[1]->expression.vtype == TYPE_VECTOR)
+ 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]);
+ 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]);
+ 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",
+ 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",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
+ break;
+
+
+ case opid1('='):
+ if (!vars[0]) {
+ parseerror(parser, "Cannot assign to non-variable");
+ return false;
+ }
+ out = (ast_expression*)ast_store_new(ctx,
+ type_store_instr[vars[0]->expression.vtype],
+ vars[0], exprs[1]);
+ break;
+ }
+
+ if (!out) {
+ parseerror(parser, "failed to apply operand %s", op->op);
+ return false;
+ }
+
+ sy->out[sy->out_count++] = syexp(ctx, out);
+ return true;
+}
+
+static ast_expression* parser_expression(parser_t *parser)
+{
+ ast_expression *expr = NULL;
+ shunt sy;
+ bool wantop = false;
MEM_VECTOR_INIT(&sy, out);
MEM_VECTOR_INIT(&sy, ops);
+ while (true)
+ {
+ if (!wantop)
+ {
+ bool nextwant = true;
+ if (parser->tok == TOKEN_IDENT)
+ {
+ /* variable */
+ ast_value *var = parser_find_var(parser, parser_tokval(parser));
+ if (!var) {
+ parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
+ goto onerr;
+ }
+ if (!shunt_out_add(&sy, syval(parser_ctx(parser), var))) {
+ parseerror(parser, "out of memory");
+ goto onerr;
+ }
+ printf("Added: %s\n", var->name);
+ }
+ 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");
+ goto onerr;
+ }
+ }
+ 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;
+ }
+ printf("Added: %i\n", parser_token(parser)->constval.i);
+ }
+ 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;
+ }
+ }
+ else {
+ /* TODO: prefix operators */
+ parseerror(parser, "expected statement");
+ goto onerr;
+ }
+ wantop = nextwant;
+ parser->lex->flags.noops = !wantop;
+ } else {
+ if (parser->tok == ')') {
+ /* we do expect an operator next */
+ /* closing an opening paren */
+ printf("Applying closing paren\n");
+ if (!sy.ops_count) {
+ parseerror(parser, "unmatched closing paren");
+ goto onerr;
+ }
+ if (sy.ops[sy.ops_count-1].paren == 1) {
+ parseerror(parser, "empty parenthesis expression");
+ goto onerr;
+ }
+ while (sy.ops_count) {
+ if (sy.ops[sy.ops_count-1].paren == 1) {
+ sy.ops_count--;
+ break;
+ }
+ if (!parser_sy_pop(parser, &sy))
+ goto onerr;
+ }
+ }
+ else if (parser->tok != TOKEN_OPERATOR) {
+ 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;
+ }
+ /* found an operator */
+ op = &operators[o];
+
+ 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];
+ }
+
+ if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
+ goto onerr;
+ printf("Added op %s\n", op->op);
+ }
+ wantop = false;
+ parser->lex->flags.noops = true;
+ }
+ if (!parser_next(parser)) {
+ goto onerr;
+ }
+ if (parser->tok == ';') {
+ printf("End of statement\n");
+ break;
+ }
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "Unexpected end of file");
+ goto onerr;
+ }
+
+ while (sy.ops_count) {
+ if (!parser_sy_pop(parser, &sy))
+ goto onerr;
+ }
+
+ parser->lex->flags.noops = true;
+ if (!sy.out_count) {
+ parseerror(parser, "empty expression");
+ expr = NULL;
+ } else
+ expr = sy.out[0].out;
MEM_VECTOR_CLEAR(&sy, out);
MEM_VECTOR_CLEAR(&sy, ops);
- return false;
+ return expr;
+
+onerr:
+ parser->lex->flags.noops = true;
+ MEM_VECTOR_CLEAR(&sy, out);
+ MEM_VECTOR_CLEAR(&sy, ops);
+ return NULL;
}
-static bool parser_variable(parser_t *parser, bool global);
+static bool parser_variable(parser_t *parser, ast_block *localblock);
static bool parser_body_do(parser_t *parser, ast_block *block)
{
if (parser->tok == TOKEN_TYPENAME)
{
/* local variable */
- if (!parser_variable(parser, false))
+ if (!parser_variable(parser, block))
return false;
return true;
}
+ else if (parser->tok == TOKEN_KEYWORD)
+ {
+ if (!strcmp(parser_tokval(parser), "return"))
+ {
+ ast_expression *exp;
+ ast_return *ret;
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected return expression");
+ return false;
+ }
+
+ exp = parser_expression(parser);
+ if (!exp)
+ return false;
+ ret = ast_return_new(exp->expression.node.context, exp);
+ if (!ret) {
+ ast_delete(exp);
+ return false;
+ }
+ if (!ast_block_exprs_add(block, (ast_expression*)ret)) {
+ ast_delete(ret);
+ return false;
+ }
+ return true;
+ }
+ parseerror(parser, "Unexpected keyword");
+ return false;
+ }
else if (parser->tok == '{')
{
/* a block */
- parseerror(parser, "TODO: inner blocks");
+ parseerror(parser, "TODO: inner blocks: %s", parser_tokval(parser));
return false;
}
else
- return parser_expression(parser, block);
+ {
+ ast_expression *exp = parser_expression(parser);
+ if (!exp)
+ return false;
+ if (!ast_block_exprs_add(block, exp)) {
+ ast_delete(exp);
+ return false;
+ }
+ return true;
+ }
}
static ast_block* parser_parse_block(parser_t *parser)
return block;
}
-static bool parser_variable(parser_t *parser, bool global)
+static bool parser_variable(parser_t *parser, ast_block *localblock)
{
bool isfunc = false;
ast_function *func = NULL;
return false;
}
- if (global && parser_find_global(parser, parser_tokval(parser))) {
+ 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 (!global && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
+ 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;
var = fval;
}
- if ( ( global && !parser_t_globals_add(parser, var)) ||
- (!global && !parser_t_locals_add(parser, var)) )
+ 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;
}
return false;
if (parser->tok == '#') {
- if (!global) {
+ if (localblock) {
parseerror(parser, "cannot declare builtins within functions");
return false;
}
ast_block *block;
ast_function *old = parser->function;
- if (!global) {
+ if (localblock) {
parseerror(parser, "cannot declare functions within functions");
return false;
}
{
if (parser->tok == TOKEN_TYPENAME)
{
- return parser_variable(parser, true);
+ return parser_variable(parser, NULL);
}
else if (parser->tok == TOKEN_KEYWORD)
{
goto cleanup;
}
+ 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 < parser->globals_count; ++i) {
if (!ast_global_codegen(parser->globals[i], ir)) {
printf("failed to generate global %s\n", parser->globals[i]->name);
projects / xonotic / gmqcc.git / blobdiff