traxys/tree-sitter
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Use graph-structured parse stack in parser

Browse source 
Not using the splitting feature yet.
This commit is contained in:
Max Brunsfeld 2015-06-18 15:04:03 -07:00
parent aaaa1c8a5d
commit 442db56b92
5 changed files with 123 additions and 74 deletions
Download patch file Download diff file Expand all files Collapse all files

34
src/runtime/parse_stack.h
View file

@ -41,19 +41,31 @@ void ts_parse_stack_delete(ParseStack *);
int ts_parse_stack_head_count(const ParseStack *);
/*
* Get the tree and state that are at the top of the given stack head.
* Get the state at given head of the stack. If the stack is empty, this
* returns the initial state (0).
*/
const ParseStackEntry *ts_parse_stack_head(const ParseStack *, int head);
TSStateId ts_parse_stack_top_state(const ParseStack *, int head);
/*
* Get the number of successors for a given parse stack entry.
* Get the tree at given head of the stack. If the stack is empty, this
* returns NULL.
*/
TSTree *ts_parse_stack_top_tree(const ParseStack *, int head);
/*
* Get the entry at the given head of the stack.
*/
ParseStackEntry *ts_parse_stack_head(ParseStack *, int head);
/*
* Get the number of successors for the parse stack entry.
*/
int ts_parse_stack_entry_next_count(const ParseStackEntry *);
/*
* Get the nth successor to a given parse stack entry.
* Get the given successor for the parse stack entry.
*/
const ParseStackEntry *ts_parse_stack_entry_next(const ParseStackEntry *, int);
ParseStackEntry *ts_parse_stack_entry_next(const ParseStackEntry *, int);
/*
* Push a (tree, state) pair onto the given head of the stack. Returns
@ -68,7 +80,12 @@ bool ts_parse_stack_push(ParseStack *, int head, TSStateId, TSTree *);
* which had previously been merged. It returns a struct that indicates the
* index of each revealed head and the trees removed from that head.
*/
ParseStackPopResultList ts_parse_stack_pop(ParseStack *, int head, int count);
ParseStackPopResultList ts_parse_stack_pop(ParseStack *, int head, int count, bool count_extra);
/*
* Remove the given number of entries from the given head of the stack.
*/
void ts_parse_stack_shrink(ParseStack *, int head, int count);
/*
* Split the given stack head into two heads, so that the stack can be
@ -77,6 +94,11 @@ ParseStackPopResultList ts_parse_stack_pop(ParseStack *, int head, int count);
*/
int ts_parse_stack_split(ParseStack *, int head);
/*
* Remove all entries from the stack.
*/
void ts_parse_stack_clear(ParseStack *);
#ifdef __cplusplus
}
#endif