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Handle malformed subscript expressions (#3064)

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Closes #3063

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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/testdata/index/fail_malformed_expr.carbon
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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
// CHECK:STDOUT: [
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'Name', text: 'v'},
// CHECK:STDOUT: {kind: 'Literal', text: 'i32'},
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'VariableInitializer', text: '='},
// CHECK:STDOUT: {kind: 'NameExpression', text: 't'},
// CHECK:STDOUT: {kind: 'IndexExpressionStart', text: '[', subtree_size: 2},
// CHECK:STDOUT: {kind: 'Literal', text: '0'},
// CHECK:STDOUT: {kind: 'IndexExpression', text: ']', has_error: yes, subtree_size: 4},
// CHECK:STDOUT: {kind: 'VariableDeclaration', text: ';', subtree_size: 10},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
// CHECK:STDERR: fail_malformed_expr.carbon:[[@LINE+3]]:17: Unexpected tokens before `]`.
// CHECK:STDERR: var v: i32 = t[0,];
// CHECK:STDERR: ^
var v: i32 = t[0,];