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David Majda 0c39f1cf86 Fix labels leaking to outer scope Labels in expressions like "(a:"a")" or "(a:"a" b:"b" c:"c")" were visible to the outside despite being wrapped in parens. This commit makes them invisible, as they should be. Note this required introduction of a new "group" AST node, whose purpose is purely to provide label scope isolation. This was necessary because "label" and "sequence" nodes don't (and can't!) provide this isolation themselves. Part of a fix of #396.	9 years ago
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generated-parser-behavior.spec.js	Fix labels leaking to outer scope	9 years ago

David Majda 0c39f1cf86 Fix labels leaking to outer scope

Labels in expressions like "(a:"a")" or "(a:"a" b:"b" c:"c")" were
visible to the outside despite being wrapped in parens. This commit
makes them invisible, as they should be.

Note this required introduction of a new "group" AST node, whose purpose
is purely to provide label scope isolation. This was necessary because
"label" and "sequence" nodes don't (and can't!) provide this isolation
themselves.

Part of a fix of #396.

generated-parser-behavior.spec.js

Fix labels leaking to outer scope