mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 08:50:10 +01:00
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>
27 lines
1.4 KiB
Plaintext
27 lines
1.4 KiB
Plaintext
// 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
|
|
// TIP: To test this file alone, run:
|
|
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/parse/testdata/generics/generic_params/basic.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/parse/testdata/generics/generic_params/basic.carbon
|
|
|
|
fn foo(a:! i32);
|
|
|
|
// CHECK:STDOUT: - filename: basic.carbon
|
|
// CHECK:STDOUT: parse_tree: [
|
|
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
|
|
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
|
|
// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'foo'},
|
|
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
|
|
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'a'},
|
|
// CHECK:STDOUT: {kind: 'CompileTimeBindingPatternStart', text: ':!', subtree_size: 2},
|
|
// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
|
|
// CHECK:STDOUT: {kind: 'CompileTimeBindingPattern', text: ':!', subtree_size: 4},
|
|
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 6},
|
|
// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 9},
|
|
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
|
|
// CHECK:STDOUT: ]
|