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Maintain a total node count on every tree

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This simplifies (and fixes bugs in) the parse stack's tracking of its
total node count since the last error, which is needed for error
recovery.
This commit is contained in:
Max Brunsfeld 2018-04-02 10:57:44 -07:00
parent f3bbf045b7
commit 80f856cef5
8 changed files with 69 additions and 68 deletions
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12
src/runtime/stack.h
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@ -41,15 +41,6 @@ uint32_t ts_stack_version_count(const Stack *);
// empty, this returns the initial state, 0.
TSStateId ts_stack_state(const Stack *, StackVersion);
// Get the number of trees that have been pushed to a given version of
// the stack.
unsigned ts_stack_push_count(const Stack *, StackVersion);
// In the event that trees were permanently removed from some version
// of the stack, decrease the version's push count to account for the
// removal.
void ts_stack_decrease_push_count(Stack *, StackVersion, unsigned);
// Get the last external token associated with a given version of the stack.
Tree *ts_stack_last_external_token(const Stack *, StackVersion);
@ -82,7 +73,8 @@ StackSliceArray ts_stack_pop_pending(Stack *, StackVersion);
// Remove any all trees from the given version of the stack.
StackSliceArray ts_stack_pop_all(Stack *, StackVersion);
unsigned ts_stack_depth_since_error(Stack *, StackVersion);
// Get the number of tree nodes on the stack since the most recent error.
unsigned ts_stack_node_count_since_error(const Stack *, StackVersion);
int ts_stack_dynamic_precedence(Stack *, StackVersion);