70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
#ifndef RUNTIME_LENGTH_H_
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#define RUNTIME_LENGTH_H_
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#include "tree_sitter/parser.h"
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#include <stdbool.h>
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static inline bool ts_length_is_unknown(TSLength self) {
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return self.chars > 0 && self.bytes == 0;
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}
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static inline void ts_length_set_unknown(TSLength *self) {
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self->bytes = 0;
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self->rows = 0;
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self->columns = 0;
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}
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static inline TSLength ts_length_add(TSLength len1, TSLength len2) {
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TSLength result;
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result.chars = len1.chars + len2.chars;
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if (ts_length_is_unknown(len1) || ts_length_is_unknown(len2)) {
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result.bytes = 0;
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result.rows = 0;
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result.columns = result.chars;
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} else {
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result.bytes = len1.bytes + len2.bytes;
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if (len2.rows == 0) {
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result.rows = len1.rows;
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result.columns = len1.columns + len2.columns;
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} else {
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result.rows = len1.rows + len2.rows;
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result.columns = len2.columns;
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}
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}
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return result;
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}
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static inline TSLength ts_length_sub(TSLength len1, TSLength len2) {
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TSLength result;
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result.chars = len1.chars - len2.chars;
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if (ts_length_is_unknown(len1) || ts_length_is_unknown(len2)) {
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result.bytes = 0;
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result.rows = 0;
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result.columns = result.chars;
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} else {
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result.bytes = len1.bytes - len2.bytes;
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if (len1.rows == len2.rows) {
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result.rows = 0;
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result.columns = len1.columns - len2.columns;
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} else {
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result.rows = len1.rows - len2.rows;
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result.columns = len1.columns;
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}
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}
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return result;
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}
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static inline TSLength ts_length_zero() {
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return (TSLength){ 0, 0, 0, 0 };
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}
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static inline bool ts_length_eq(TSLength self, TSLength other) {
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return self.bytes == other.bytes && self.chars == other.chars &&
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self.rows == other.rows && self.columns == other.columns;
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}
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#endif
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