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Handle malformed subscript expressions (#3064)

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Closes #3063

---------

Co-authored-by: Richard Smith <richard@metafoo.co.uk>
This commit is contained in:
Geoff Romer
2023-08-07 23:14:20 +00:00
committed by GitHub
co-authored by Richard Smith
parent 7feaed312a
commit 049fbc1ee4
7 changed files with 56 additions and 23 deletions
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toolchain/parser/parser_context.h
+7 -4
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@@ -112,10 +112,13 @@ class ParserContext {
auto ConsumeAndAddOpenParen(TokenizedBuffer::Token default_token,
ParseNodeKind start_kind) -> void;
// Parses a close paren token corresponding to the given open paren token,
// possibly skipping forward and diagnosing if necessary. Creates a parse node
// of the specified close kind.
auto ConsumeAndAddCloseParen(StateStackEntry state, ParseNodeKind close_kind)
// Parses a closing symbol corresponding to the opening symbol
// `expected_open`, possibly skipping forward and diagnosing if necessary.
// Creates a parse node of the specified close kind. If `expected_open` is not
// an opening symbol, the parse node will be associated with `state.token`,
// no input will be consumed, and no diagnostic will be emitted.
auto ConsumeAndAddCloseSymbol(TokenizedBuffer::Token expected_open,
StateStackEntry state, ParseNodeKind close_kind)
-> void;
// Composes `ConsumeIf` and `AddLeafNode`, returning false when ConsumeIf