mirror of
https://github.com/carbon-language/carbon-lang.git
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Dana JansensandJon Ross-Perkins
4b0e2b03b6
We add a virtual node (`CompileTimeBindingPatternStart`) as the first child of `CompileTimeBindingPattern` which holds the identifier underneath it, so that it is checked just before the type expression of the `CompileTimeBindingPattern`. When we reach this virtual node during check, we add `.Self` as a name in the current scope, and when we reach `CompileTimeBindingPattern` we remove it from scope, which ensures it's present during only the checking of the type expression for the compile time pattern. At the moment the `.Self` has a different type (it's a `TypeType`) than other `.Self` in the facet type (which are a single `FacetType`), but the intention is to immediately substitute it out of the facet type entirely, replacing it with a reference to the compile time binding (a `BindSymbolicName`) itself. A TODO has been added for this. --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
32 lines
1.9 KiB
Plaintext
32 lines
1.9 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/choice/fail_missing_definition_parameterized.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/choice/fail_missing_definition_parameterized.carbon
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// CHECK:STDERR: fail_missing_definition_parameterized.carbon:[[@LINE+4]]:35: error: choice definition expected [ExpectedChoiceDefinition]
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// CHECK:STDERR: choice MissingDefinition(T:! type);
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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choice MissingDefinition(T:! type);
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// CHECK:STDOUT: - filename: fail_missing_definition_parameterized.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: 'ChoiceIntroducer', text: 'choice'},
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// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'MissingDefinition'},
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// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'T'},
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// CHECK:STDOUT: {kind: 'CompileTimeBindingPatternStart', text: ':!', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'TypeTypeLiteral', text: 'type'},
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// CHECK:STDOUT: {kind: 'CompileTimeBindingPattern', text: ':!', subtree_size: 4},
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// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 6},
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// CHECK:STDOUT: {kind: 'ChoiceDefinitionStart', text: ';', has_error: yes, subtree_size: 9},
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// CHECK:STDOUT: {kind: 'ChoiceDefinition', text: ';', has_error: yes, subtree_size: 10},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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