traxys/tree-sitter
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Clarify distinction btwn tree padding, tree offset, node position

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- Node position is public. It represents the node's first character
  index in the document.
- Tree offset is private. It represents the distance between the tree's
  first character index and it's parent's first character index.
- Tree padding is private. It represents the amount of whitespace
  (or other separator characters) immediately preceding the tree.
This commit is contained in:
Max Brunsfeld 2014-08-28 13:22:06 -07:00
parent 226ffd6b5b
commit 3430a5edcc
6 changed files with 126 additions and 78 deletions
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16
src/runtime/tree.h
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@ -17,7 +17,7 @@ struct TSTree {
TSSymbol symbol;
TSTreeOptions options;
size_t ref_count;
size_t offset;
size_t padding;
size_t size;
union {
struct {
@ -35,8 +35,8 @@ struct TSTree {
typedef struct {
TSTree *tree;
size_t position;
} TSChildWithPosition;
size_t offset;
} TSTreeChild;
static inline int ts_tree_is_extra(const TSTree *tree) {
return (tree->options & TSTreeOptionsExtra);
@ -61,8 +61,8 @@ static inline size_t ts_tree_visible_child_count(const TSTree *tree) {
return tree->visible_child_count;
}
static inline TSChildWithPosition *ts_tree_visible_children(const TSTree *tree,
size_t *count) {
static inline TSTreeChild *ts_tree_visible_children(const TSTree *tree,
size_t *count) {
if (tree->symbol == ts_builtin_sym_error || tree->visible_child_count == 0) {
if (count)
*count = 0;
@ -70,17 +70,17 @@ static inline TSChildWithPosition *ts_tree_visible_children(const TSTree *tree,
} else {
if (count)
*count = tree->visible_child_count;
return (TSChildWithPosition *)(tree + 1);
return (TSTreeChild *)(tree + 1);
}
}
TSTree *ts_tree_make_leaf(TSSymbol symbol, size_t size, size_t offset,
TSTree *ts_tree_make_leaf(TSSymbol symbol, size_t size, size_t padding,
int is_hidden);
TSTree *ts_tree_make_node(TSSymbol symbol, size_t child_count,
TSTree **children, int is_hidden);
TSTree *ts_tree_make_error(char lookahead_char, size_t expected_input_count,
const TSSymbol *expected_inputs, size_t size,
size_t offset);
size_t padding);
void ts_tree_retain(TSTree *tree);
void ts_tree_release(TSTree *tree);
int ts_tree_equals(const TSTree *tree1, const TSTree *tree2);