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Add debuggging output when starting to parse

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This commit is contained in:
Max Brunsfeld 2014-10-14 10:31:18 -07:00
parent 1ef744a76b
commit 87df0a24eb
1 changed files with 16 additions and 11 deletions
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27
src/runtime/parser.c
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@ -30,17 +30,12 @@ static TSParseAction get_action(const TSLanguage *language, TSStateId state,
return (language->parse_table + (state * language->symbol_count))[sym];
}
static TSLength break_down_left_stack(TSParser *parser, TSInputEdit *edit) {
static TSLength break_down_left_stack(TSParser *parser, TSInputEdit edit) {
ts_stack_shrink(&parser->right_stack, 0);
if (!edit) {
ts_stack_shrink(&parser->stack, 0);
return ts_length_zero();
}
TSLength prev_size = ts_stack_total_tree_size(&parser->stack);
parser->total_chars =
prev_size.chars + edit->chars_inserted - edit->chars_removed;
prev_size.chars + edit.chars_inserted - edit.chars_removed;
TSLength left_subtree_end = prev_size;
size_t right_subtree_start = parser->total_chars;
@ -51,7 +46,7 @@ static TSLength break_down_left_stack(TSParser *parser, TSInputEdit *edit) {
size_t child_count;
TSTree **children = ts_tree_children(node, &child_count);
if (left_subtree_end.chars < edit->position && !children)
if (left_subtree_end.chars < edit.position && !children)
break;
DEBUG_PARSE("pop_left sym:%s", SYM_NAME(node->symbol));
@ -59,7 +54,7 @@ static TSLength break_down_left_stack(TSParser *parser, TSInputEdit *edit) {
left_subtree_end = ts_length_sub(left_subtree_end, ts_tree_total_size(node));
size_t i = 0;
for (; i < child_count && left_subtree_end.chars < edit->position; i++) {
for (; i < child_count && left_subtree_end.chars < edit.position; i++) {
TSTree *child = children[i];
TSStateId state = ts_stack_top_state(&parser->stack);
TSParseAction action = get_action(parser->language, state, child->symbol);
@ -75,7 +70,7 @@ static TSLength break_down_left_stack(TSParser *parser, TSInputEdit *edit) {
for (size_t j = child_count - 1; j + 1 > i; j--) {
TSTree *child = children[j];
right_subtree_start -= ts_tree_total_size(child).chars;
if (right_subtree_start < edit->position + edit->chars_inserted)
if (right_subtree_start < edit.position + edit.chars_inserted)
break;
DEBUG_PARSE("push_right sym:%s", SYM_NAME(child->symbol));
@ -324,7 +319,17 @@ const TSTree *ts_parser_parse(TSParser *parser, TSInput input,
TSInputEdit *edit) {
parser->lookahead = NULL;
parser->next_lookahead = NULL;
TSLength position = break_down_left_stack(parser, edit);
TSLength position;
if (edit) {
DEBUG_PARSE("edit pos:%lu inserted:%lu deleted:%lu", edit->position,
edit->chars_inserted, edit->chars_removed);
position = break_down_left_stack(parser, *edit);
} else {
DEBUG_PARSE("new_parse");
ts_stack_shrink(&parser->stack, 0);
position = ts_length_zero();
}
parser->lexer.input = input;
ts_lexer_reset(&parser->lexer, position);