Experiments/libabacus
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Implement storing expressions into block.

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This commit is contained in:
Danila Fedorin 2018-02-17 19:39:12 -08:00
parent 811704be25
commit 72d60855c2
1 changed files with 24 additions and 6 deletions
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30
src/parser.c
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@ -189,7 +189,6 @@ libab_result _parser_append_atom(struct parser_state* state, ll* append_to) {
result = libab_convert_ds_result(ll_append(append_to, tree));
if(result != LIBAB_SUCCESS) {
libab_tree_free_recursive(tree);
free(tree);
}
}
return result;
@ -222,8 +221,6 @@ libab_result _parser_expression_tree(struct parser_state* state, ll* source, lib
if(left) libab_tree_free_recursive(left);
if(right) libab_tree_free_recursive(right);
libab_tree_free(top);
free(left);
free(right);
free(top);
top = NULL;
}
@ -243,7 +240,6 @@ libab_result _parser_expression_tree(struct parser_state* state, ll* source, lib
if(result != LIBAB_SUCCESS) {
if(child) libab_tree_free_recursive(child);
libab_tree_free(top);
free(child);
free(top);
top = NULL;
}
@ -340,7 +336,6 @@ libab_result _parse_expression(struct parser_state* state, libab_tree** store_in
if(result == LIBAB_SUCCESS && out_stack.tail) {
libab_tree_free_recursive(*store_into);
free(*store_into);
*store_into = NULL;
result = LIBAB_UNEXPECTED;
}
@ -369,17 +364,40 @@ libab_result _parse_statement(struct parser_state* state, libab_tree** store_int
libab_result _parse_block(struct parser_state* state,
libab_tree** store_into, int expect_braces) {
libab_result result = LIBAB_SUCCESS;
libab_tree* temp;
if((*store_into = malloc(sizeof(**store_into))) == NULL) result = LIBAB_MALLOC;
if(result == LIBAB_SUCCESS) {
(*store_into)->variant = BLOCK;
(*store_into)->from = state->current_match->from;
(*store_into)->to = state->current_match->to;
(*store_into)->line = state->current_match->line;
(*store_into)->line_from = state->current_match->line_from;
result = libab_convert_ds_result(vec_init(&(*store_into)->children));
if(result != LIBAB_SUCCESS) {
free(*store_into);
}
}
if(expect_braces && result == LIBAB_SUCCESS) result = _parser_consume_char(state, '{');
while(result == LIBAB_SUCCESS &&
!_parser_eof(state) &&
!(expect_braces && _parser_is_char(state, '}'))) {
result = _parse_statement(state, &temp);
if(result == LIBAB_SUCCESS) {
result = libab_convert_ds_result(vec_add(&(*store_into)->children, temp));
if(result != LIBAB_SUCCESS) {
libab_tree_free_recursive(temp);
}
}
}
if(expect_braces && result == LIBAB_SUCCESS) result = _parser_consume_char(state, '}');
if(result != LIBAB_SUCCESS && *store_into) {
libab_tree_free_recursive(*store_into);
}
return result;
}