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>
52 lines
2.8 KiB
Plaintext
52 lines
2.8 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/generics/generic_params/template_addr.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/generics/generic_params/template_addr.carbon
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// --- fail_wrong_order.carbon
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// CHECK:STDERR: fail_wrong_order.carbon:[[@LINE+4]]:17: error: expected name in binding pattern [ExpectedBindingPattern]
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// CHECK:STDERR: fn foo(template addr a:! i32);
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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fn foo(template addr a:! i32);
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// --- correct_order.carbon
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fn bar(addr template b:! i32);
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// CHECK:STDOUT: - filename: fail_wrong_order.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: 'FunctionIntroducer', text: 'fn'},
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// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'foo'},
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// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'addr', has_error: yes},
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// CHECK:STDOUT: {kind: 'InvalidParse', text: 'addr', has_error: yes},
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// CHECK:STDOUT: {kind: 'LetBindingPattern', text: 'template', has_error: yes, subtree_size: 3},
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// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', has_error: yes, subtree_size: 5},
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// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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// CHECK:STDOUT: - filename: correct_order.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: 'FunctionIntroducer', text: 'fn'},
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// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'bar'},
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// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'b'},
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// CHECK:STDOUT: {kind: 'TemplateBindingName', text: 'template', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'CompileTimeBindingPatternStart', text: ':!', subtree_size: 3},
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// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
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// CHECK:STDOUT: {kind: 'CompileTimeBindingPattern', text: ':!', subtree_size: 5},
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// CHECK:STDOUT: {kind: 'Addr', text: 'addr', subtree_size: 6},
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// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 8},
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// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 11},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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