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Chandler Carruth
1b2eb42c5a
An invalid parse due to an error token isn't likely a great diagnostic as it will already have been diagnosed by the lexer. A common case to start handling that is when the parser encounters an invalid token when expecting an expression. This removes a number of unhelpful diagnostics after the lexer has done a good job diagnosing. This also means that there may be parse tree errors that aren't diagnosed when there are lexer-diagnosed errors, so track that. Follow-up to #4430 that almost finishes addressing its diagnostic TODO.
28 lines
1.4 KiB
Plaintext
28 lines
1.4 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/parse/testdata/array/fail_require_close_bracket.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/parse/testdata/array/fail_require_close_bracket.carbon
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// TODO: It should emit only one error message.
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// CHECK:STDERR: fail_require_close_bracket.carbon:[[@LINE+3]]:8: error: opening symbol without a corresponding closing symbol [UnmatchedOpening]
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// CHECK:STDERR: var x: [i32;;
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// CHECK:STDERR: ^
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var x: [i32;;
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// CHECK:STDOUT: - filename: fail_require_close_bracket.carbon
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// CHECK:STDOUT: parse_tree: [
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// CHECK:STDOUT: {kind: 'FileStart', text: ''},
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// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
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// CHECK:STDOUT: {kind: 'IdentifierName', text: 'x'},
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// CHECK:STDOUT: {kind: 'InvalidParse', text: '[', has_error: yes},
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// CHECK:STDOUT: {kind: 'BindingPattern', text: ':', has_error: yes, subtree_size: 3},
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// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'EmptyDecl', text: ';'},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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