50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
|
#include "ctx.h"
|
||
|
|
|
||
|
|
#include <ivy/lang/ast.h>
|
||
|
|
|
||
|
|
bool parse_try(struct ivy_parser *parser, struct ivy_ast_node **out)
|
||
|
|
{
|
||
|
|
if (!parse_keyword(parser, IVY_KW_TRY)) {
|
||
|
|
parse_trace(parser, "expected `try` keyword");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct ivy_ast_try_node *try = create_node(IVY_AST_TRY);
|
||
|
|
|
||
|
|
if (!parse_expr(parser, EXPR_PARSE_STOP_KW_CONTROL, &try->n_try)) {
|
||
|
|
parse_trace(parser, "invalid try block");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool ok = true;
|
||
|
|
while (1) {
|
||
|
|
if (!parse_keyword(parser, IVY_KW_CATCH)) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct ivy_ast_node *catch_guard = NULL;
|
||
|
|
struct ivy_ast_node *catch_block = NULL;
|
||
|
|
|
||
|
|
if (!parse_expr(parser, EXPR_PARSE_STOP_LEFT_BRACKET, &catch_guard)) {
|
||
|
|
parse_trace(parser, "invalid catch guard");
|
||
|
|
ok = false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!parse_block(parser, &catch_block)) {
|
||
|
|
parse_trace(parser, "invalid catch block");
|
||
|
|
ok = false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct ivy_ast_try_catch_node *catch
|
||
|
|
= create_node(IVY_AST_TRY_CATCH);
|
||
|
|
catch->n_pattern = catch_guard;
|
||
|
|
catch->n_block = catch_block;
|
||
|
|
fx_queue_push_back(&try->n_catch, &catch->n_base.n_entry);
|
||
|
|
}
|
||
|
|
|
||
|
|
*out = generic_node(try);
|
||
|
|
return true;
|
||
|
|
}
|