80 lines
3 KiB
C
80 lines
3 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* lexer_goto.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/08/31 18:08:11 by maiboyer #+# #+# */
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/* Updated: 2024/08/31 18:08:20 by maiboyer ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "me/types.h"
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#include "parser/lexer.h"
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bool ts_lexer__eof(const TSLexer *_self);
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t_u32 ts_lexer__get_column(TSLexer *_self);
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void ts_lexer__advance(TSLexer *_self, bool skip);
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void ts_lexer__do_advance(Lexer *self, bool skip);
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void ts_lexer__clear_chunk(Lexer *self);
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void ts_lexer__get_chunk(Lexer *self);
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void ts_lexer__get_lookahead(Lexer *self);
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void ts_lexer__mark_end(TSLexer *_self);
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void ts_lexer_advance_to_end(Lexer *self);
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void ts_lexer_goto(Lexer *self, Length position);
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void ts_lexer_goto(Lexer *self, Length position)
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{
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bool found_included_range;
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TSRange *included_range;
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TSRange *last_included_range;
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found_included_range = false;
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self->current_position = position;
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for (t_u32 i = 0; i < self->included_range_count; i++)
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{
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included_range = &self->included_ranges[i];
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if (included_range->end_byte > self->current_position.bytes && included_range->end_byte > included_range->start_byte)
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{
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if (included_range->start_byte >= self->current_position.bytes)
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{
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self->current_position = (Length){
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.bytes = included_range->start_byte,
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.extent = included_range->start_point,
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};
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}
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self->current_included_range_index = i;
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found_included_range = true;
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break;
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}
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}
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if (found_included_range)
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{
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// If the current position is outside of the current chunk of text,
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// then clear out the current chunk of text.
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if (self->chunk &&
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(self->current_position.bytes < self->chunk_start || self->current_position.bytes >= self->chunk_start + self->chunk_size))
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{
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ts_lexer__clear_chunk(self);
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}
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self->lookahead_size = 0;
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self->data.lookahead = '\0';
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}
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// If the given position is beyond any of included ranges, move to the EOF
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// state - past the end of the included ranges.
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else
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{
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self->current_included_range_index = self->included_range_count;
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last_included_range = &self->included_ranges[self->included_range_count - 1];
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self->current_position = (Length){
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.bytes = last_included_range->end_byte,
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.extent = last_included_range->end_point,
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};
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ts_lexer__clear_chunk(self);
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self->lookahead_size = 1;
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self->data.lookahead = '\0';
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}
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}
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