Experiments/libabacus
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Add support for the return keyword.

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Danila Fedorin
2018-03-08 21:31:24 -08:00
parent f3f1cc8c43
commit bb61dbcd54
6 changed files with 38 additions and 5 deletions
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27
src/parser.c
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@@ -467,6 +467,31 @@ libab_result _parse_fun(struct parser_state* state, libab_tree** store_into) {
return result;
}
libab_result _parse_return(struct parser_state* state, libab_tree** store_into) {
libab_result result = LIBAB_SUCCESS;
libab_tree* child = NULL;
if(_parser_is_type(state, TOKEN_KW_RETURN)) {
result = _parser_construct_node_vec(state->current_match, store_into);
if(result == LIBAB_SUCCESS) {
(*store_into)->variant = TREE_RETURN;
_parser_state_step(state);
}
} else {
result = LIBAB_UNEXPECTED;
}
if(result == LIBAB_SUCCESS) {
PARSE_CHILD(result, state, _parse_expression, child, &(*store_into)->children);
}
if(result != LIBAB_SUCCESS) {
if(*store_into) libab_tree_free_recursive(*store_into);
*store_into = NULL;
}
return result;
}
libab_result _parse_while(struct parser_state* state, libab_tree** store_into) {
libab_result result = LIBAB_SUCCESS;
libab_tree* condition = NULL;
@@ -610,6 +635,8 @@ libab_result _parse_atom(struct parser_state* state, libab_tree** store_into) {
result = _parse_braced_block(state, store_into);
} else if(_parser_is_type(state, TOKEN_KW_FUN)) {
result = _parse_fun(state, store_into);
} else if(_parser_is_type(state, TOKEN_KW_RETURN)) {
result = _parse_return(state, store_into);
} else {
result = LIBAB_UNEXPECTED;
}