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/*
Copyright (C) 2019, 2020 Leo Tenenbaum.
This file is part of toc. toc is distributed under version 3 of the GNU General Public License, without any warranty whatsoever.
You should have received a copy of the GNU General Public License along with toc. If not, see <https://www.gnu.org/licenses/>.
*/
static bool cgen_sdecls_stmt(CGenerator *g, Statement *s);
static bool cgen_sdecls_decl(CGenerator *g, Declaration *d);
static bool cgen_sdecls_expr(CGenerator *g, Expression *e);
/* i is the name for this type, NULL if not available */
/* ALWAYS RETURNS TRUE. it just returns a bool for cgen_recurse_into_type to work */
static bool cgen_sdecls_type(CGenerator *g, Type *type) {
if (!(type->flags & TYPE_IS_RESOLVED)) /* non-instance constant fn parameter type */
return true;
if (type->kind == TYPE_STRUCT) {
StructDef *sdef = type->struc;
/* we'll actually define the struct later; here we can just declare it */
if (sdef->flags & STRUCT_DEF_CGEN_DECLARED) {
/* we've already done this */
} else {
cgen_write(g, "struct ");
if (sdef->name) {
cgen_ident(g, sdef->name);
} else {
IdentID id = ++g->ident_counter;
cgen_ident_id(g, id);
sdef->c.id = id;
}
cgen_write(g, ";");
cgen_nl(g);
sdef->flags |= STRUCT_DEF_CGEN_DECLARED;
}
}
cgen_recurse_subtypes(cgen_sdecls_type, g, type);
return true;
}
static bool cgen_sdecls_block(CGenerator *g, Block *b) {
Block *prev_block = g->block;
g->block = b;
arr_foreach(b->stmts, Statement, s)
if (!cgen_sdecls_stmt(g, s))
return false;
if (b->ret_expr && !cgen_sdecls_expr(g, b->ret_expr))
return false;
g->block = prev_block;
return true;
}
static bool cgen_sdecls_expr(CGenerator *g, Expression *e) {
switch (e->kind) {
case EXPR_CAST:
cgen_sdecls_type(g, &e->cast.type);
break;
case EXPR_FN:
/* needs to go before decls_cgen.c... */
e->fn->c.id = ++g->ident_counter;
break;
case EXPR_TYPE:
if (!cgen_sdecls_type(g, &e->typeval))
return false;
break;
case EXPR_NMS:
e->nms.c.id = 0;
break;
default: break;
}
cgen_recurse_subexprs(g, e, cgen_sdecls_expr, cgen_sdecls_block, cgen_sdecls_decl);
return true;
}
static bool cgen_sdecls_decl(CGenerator *g, Declaration *d) {
if (d->flags & DECL_FOREIGN) {
/* handled by cgen_decls */
return true;
}
cgen_sdecls_type(g, &d->type);
if (cgen_fn_is_direct(g, d)) {
d->expr.fn->c.name = d->idents[0];
}
for (int idx = 0; idx < (int)arr_len(d->idents); ++idx) {
Type *type = decl_type_at_index(d, idx);
Value *val = decl_val_at_index(d, idx);
if (type_is_builtin(type, BUILTIN_TYPE)) {
if (!cgen_sdecls_type(g, val->type))
return false;
}
}
if (d->flags & DECL_HAS_EXPR) {
if (!cgen_sdecls_expr(g, &d->expr))
return false;
if (d->flags & DECL_EXPORT) {
if (d->expr.kind == EXPR_FN)
d->expr.fn->flags |= FN_EXPR_EXPORT;
}
}
return true;
}
static bool cgen_sdecls_stmt(CGenerator *g, Statement *s) {
switch (s->kind) {
case STMT_DECL:
if (!cgen_sdecls_decl(g, s->decl))
return false;
break;
case STMT_EXPR:
if (!cgen_sdecls_expr(g, &s->expr))
return false;
break;
case STMT_RET:
if (s->ret.flags & RET_HAS_EXPR)
if (!cgen_sdecls_expr(g, &s->ret.expr))
return false;
break;
case STMT_INCLUDE:
arr_foreach(s->inc.stmts, Statement, sub)
if (!cgen_sdecls_stmt(g, sub))
return false;
break;
}
return true;
}
static bool cgen_sdecls_file(CGenerator *g, ParsedFile *f) {
arr_foreach(f->stmts, Statement, s) {
if (!cgen_sdecls_stmt(g, s))
return false;
}
return true;
}
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