traxys/tree-sitter
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Represent byte, char and tree counts as 32 bit numbers

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The parser spends the majority of its time allocating and freeing trees and stack nodes.
Also, the memory footprint of the AST is a significant concern when using tree-sitter
with large files. This library is already unlikely to work very well with source files
larger than 4GB, so representing rows, columns, byte lengths and child indices as
unsigned 32 bit integers seems like the right choice.
This commit is contained in:
Max Brunsfeld 2016-11-14 12:15:24 -08:00
parent 11e767bd81
commit 535879a2bd
25 changed files with 268 additions and 263 deletions
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10
src/runtime/string_input.c
View file

@ -4,23 +4,23 @@
typedef struct {
const char *string;
size_t position;
size_t length;
uint32_t position;
uint32_t length;
} TSStringInput;
const char *ts_string_input_read(void *payload, size_t *bytes_read) {
const char *ts_string_input_read(void *payload, uint32_t *bytes_read) {
TSStringInput *input = (TSStringInput *)payload;
if (input->position >= input->length) {
*bytes_read = 0;
return "";
}
size_t previous_position = input->position;
uint32_t previous_position = input->position;
input->position = input->length;
*bytes_read = input->position - previous_position;
return input->string + previous_position;
}
int ts_string_input_seek(void *payload, size_t character, size_t byte) {
int ts_string_input_seek(void *payload, uint32_t character, uint32_t byte) {
TSStringInput *input = (TSStringInput *)payload;
input->position = byte;
return (byte < input->length);