Experiments/libabacus
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Add code to parse while loops.

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Danila Fedorin
2018-02-27 11:57:45 -08:00
parent 1d0ea602a5
commit 976b6d1b1a
6 changed files with 48 additions and 2 deletions
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41
src/parser.c
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@@ -227,6 +227,45 @@ libab_result _parse_if(struct parser_state* state, libab_tree** store_into) {
return result;
}
libab_result _parse_while(struct parser_state* state, libab_tree** store_into) {
libab_result result = LIBAB_SUCCESS;
libab_tree* condition = NULL;
libab_tree* value = NULL;
if(_parser_is_type(state, TOKEN_KW_WHILE)) {
result = _parser_construct_node_vec(state->current_match, store_into);
if(result == LIBAB_SUCCESS) {
(*store_into)->variant = WHILE;
_parser_state_step(state);
}
} else {
result = LIBAB_UNEXPECTED;
}
if(result == LIBAB_SUCCESS) {
result = _parser_consume_char(state, '(');
}
if(result == LIBAB_SUCCESS) {
PARSE_CHILD(result, state, _parse_expression, condition, &(*store_into)->children);
}
if(result == LIBAB_SUCCESS) {
result = _parser_consume_char(state, ')');
}
if(result == LIBAB_SUCCESS) {
PARSE_CHILD(result, state, _parse_expression, value, &(*store_into)->children);
}
if(result != LIBAB_SUCCESS) {
if(*store_into) libab_tree_free_recursive(*store_into);
*store_into = NULL;
}
return result;
}
libab_result _parse_call(struct parser_state* state, libab_tree** store_into) {
libab_result result = LIBAB_SUCCESS;
libab_tree* temp;
@@ -285,6 +324,8 @@ libab_result _parse_atom(struct parser_state* state, libab_tree** store_into) {
_parser_state_step(state);
} else if(_parser_is_type(state, TOKEN_KW_IF)) {
result = _parse_if(state, store_into);
} else if(_parser_is_type(state, TOKEN_KW_WHILE)) {
result = _parse_while(state, store_into);
} else if(_parser_is_char(state, '{')) {
result = _parse_block(state, store_into, 1);
} else {