traxys/tree-sitter
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Record in parse table which actions can hide splits

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Suppose a parse state S has multiple actions for a terminal lookahead symbol A.
Then during incremental parsing, while in state S, the parser should not
reuse a non-terminal lookahead B where FIRST(B) contains A, because reusing B
might prematurely discard one of the possible actions that a batch parser
would have attempted in state S, upon seeing A as a lookahead.
This commit is contained in:
Max Brunsfeld 2015-12-17 12:48:55 -08:00
parent 7fbb628c78
commit c495076adb
19 changed files with 58613 additions and 60661 deletions
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2
spec/runtime/document_spec.cc
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@ -135,7 +135,7 @@ describe("Document", [&]() {
AssertThat(debugger->messages, Contains("new_parse"));
AssertThat(debugger->messages, Contains("lookahead char:'['"));
AssertThat(debugger->messages, Contains("reduce sym:array, child_count:4"));
AssertThat(debugger->messages, Contains("reduce sym:array, child_count:4, fragile:false"));
AssertThat(debugger->messages, Contains("accept"));
});