mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-11-15 19:58:11 +00:00
Richard Smith
6dda094928
Change parse tree from `template (T:! type)` to `(template T):! type`, so that we have information about whether a binding is a template binding available when forming the representation of the binding pattern. This incidentally fixes a bug that we would accept `template addr A:! B` instead of the intended `addr template A:! B`. Track whether a symbolic binding is a template binding on the `EntityName` object. I'm borrowing a bit from the `CompileTimeBindIndex` for this in order to avoid making `EntityName`s larger. Longer-term, we should think about using a different representation for symbolic bindings, to avoid including these fields in all `EntityName`s, but that's out of scope for this change. So far, template bindings are treated as having the same phase as checked bindings, but that will change in a future PR.
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/template.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/parse/testdata/generics/generic_params/template.carbon
|
|
|
|
fn foo(template a:! i32);
|
|
|
|
// CHECK:STDOUT: - filename: template.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: 'TuplePatternStart', text: '('},
|
|
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'a'},
|
|
// CHECK:STDOUT: {kind: 'TemplateBindingName', text: 'template', subtree_size: 2},
|
|
// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
|
|
// CHECK:STDOUT: {kind: 'CompileTimeBindingPattern', text: ':!', subtree_size: 4},
|
|
// CHECK:STDOUT: {kind: 'TuplePattern', text: ')', subtree_size: 6},
|
|
// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 9},
|
|
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
|
|
// CHECK:STDOUT: ]
|