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static bool typedefs_stmt(CGenerator *g, Statement *s);
static bool typedefs_block(CGenerator *g, Block *b) {
Block *prev = g->block;
if (!cgen_block_enter(g, b))
return false;
arr_foreach(b->stmts, Statement, s)
typedefs_stmt(g, s);
cgen_block_exit(g, prev);
return true;
}
static bool typedefs_expr(CGenerator *g, Expression *e) {
switch (e->kind) {
case EXPR_UNARY_OP:
if (!typedefs_expr(g, e->unary.of))
return false;
break;
case EXPR_BINARY_OP:
if (!typedefs_expr(g, e->binary.lhs))
return false;
if (e->binary.op != BINARY_DOT)
if (!typedefs_expr(g, e->binary.rhs))
return false;
break;
case EXPR_CAST:
if (!typedefs_expr(g, e->cast.expr))
return false;
break;
case EXPR_CALL:
if (!typedefs_expr(g, e->call.fn))
return false;
arr_foreach(e->call.arg_exprs, Expression, a)
if (!typedefs_expr(g, a))
return false;
break;
case EXPR_BLOCK:
if (!typedefs_block(g, &e->block))
return false;
break;
case EXPR_IF:
if (e->if_.cond)
if (!typedefs_expr(g, e->if_.cond))
return false;
if (!typedefs_block(g, &e->if_.body))
return false;
if (e->if_.next_elif)
if (!typedefs_expr(g, e->if_.next_elif))
return false;
break;
case EXPR_WHILE:
if (e->while_.cond)
if (!typedefs_expr(g, e->while_.cond))
return false;
if (!typedefs_block(g, &e->while_.body))
return false;
break;
case EXPR_EACH: {
EachExpr *ea = &e->each;
if (ea->flags & EACH_IS_RANGE) {
if (!typedefs_expr(g, ea->range.from))
return false;
if (ea->range.to && !typedefs_expr(g, ea->range.to))
return false;
/* step is a value, not an expression */
} else {
if (!typedefs_expr(g, ea->of))
return false;
}
} break;
case EXPR_TUPLE:
arr_foreach(e->tuple, Expression, x)
if (!typedefs_expr(g, x))
return false;
break;
case EXPR_SLICE:
if (!typedefs_expr(g, e->slice.of)) return false;
if (e->slice.from && !typedefs_expr(g, e->slice.from)) return false;
if (e->slice.to && !typedefs_expr(g, e->slice.to)) return false;
break;
case EXPR_FN:
fn_enter(&e->fn, 0);
if (!typedefs_block(g, &e->fn.body))
return false;
fn_exit(&e->fn);
break;
case EXPR_NEW:
if (e->new.n && !typedefs_expr(g, e->new.n))
return false;
break;
case EXPR_TYPE:
case EXPR_C:
case EXPR_DSIZEOF:
case EXPR_DALIGNOF:
case EXPR_IDENT:
case EXPR_LITERAL_BOOL:
case EXPR_LITERAL_INT:
case EXPR_LITERAL_STR:
case EXPR_LITERAL_CHAR:
case EXPR_LITERAL_FLOAT:
break;
}
return true;
}
static bool typedefs_decl(CGenerator *g, Declaration *d) {
d->c.ids = NULL;
for (int idx = 0; idx < (int)arr_len(d->idents); idx++) {
Identifier i = d->idents[idx];
Type *type = decl_type_at_index(d, idx);
Value *val = decl_val_at_index(d, idx);
if (type->kind == TYPE_TYPE) {
if (d->c.ids == NULL)
d->c.ids = calloc(arr_len(d->idents), sizeof *d->c.ids);
/* generate typedef */
IdentID id;
if (g->block != NULL) id = d->c.ids[idx] = g->ident_counter++;
if (val->type->kind == TYPE_STRUCT) continue; /* we don't need to typedef this; we can just use its tag */
cgen_write(g, "typedef ");
if (!cgen_type_pre(g, val->type, d->where)) return false;
cgen_write(g, " ");
if (g->block == NULL) {
/* we can refer to this by its name */
cgen_ident(g, i);
} else {
/* we need to use an ID ): */
cgen_ident_id(g, id);
}
if (val->type->kind != TYPE_STRUCT) {
if (!cgen_type_post(g, val->type, d->where)) return false;
}
cgen_write(g, ";");
cgen_nl(g);
}
}
if (d->flags & DECL_FLAG_HAS_EXPR)
if (!typedefs_expr(g, &d->expr))
return false;
return true;
}
static bool typedefs_stmt(CGenerator *g, Statement *s) {
switch (s->kind) {
case STMT_DECL:
if (!typedefs_decl(g, &s->decl))
return false;
break;
case STMT_EXPR:
if (!typedefs_expr(g, &s->expr))
return false;
break;
case STMT_RET:
if (s->ret.flags & RET_HAS_EXPR)
if (!typedefs_expr(g, &s->ret.expr))
return false;
break;
}
return true;
}
static bool typedefs_file(CGenerator *g, ParsedFile *f) {
arr_foreach(f->stmts, Statement, s) {
if (!typedefs_stmt(g, s))
return false;
}
return true;
}
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