mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-27 22:02:33 +01:00
Geoff Romer
4a0cf6c1fb
This change ensures that a function signature always starts with an `IdentifierNameMaybeBeforeSignature` node (renamed from `IdentifierNameBeforeParams`), even in the case of function declarations like `fn F -> T` that have no parameter list. As a consequence, this ensures that we push new entries onto `pattern_block_stack` and `full_pattern_stack` when we start processing the function signature.
84 lines
5.0 KiB
Plaintext
84 lines
5.0 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.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.carbon
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// --- basic.carbon
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fn foo(template a:! i32);
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// --- fail_template_ref.carbon
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// CHECK:STDERR: fail_template_ref.carbon:[[@LINE+4]]:17: error: expected `:` binding after `ref` [ExpectedRuntimeBindingPatternAfterRef]
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// CHECK:STDERR: fn foo(template ref a:! i32);
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// CHECK:STDERR: ^~~
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// CHECK:STDERR:
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fn foo(template ref a:! i32);
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// CHECK:STDERR: fail_template_ref.carbon:[[@LINE+4]]:8: error: expected `:!` binding after `template` [ExpectedGenericBindingPatternAfterTemplate]
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// CHECK:STDERR: fn foo(template ref a: i32);
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// CHECK:STDERR: ^~~~~~~~
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// CHECK:STDERR:
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fn foo(template ref a: i32);
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// CHECK:STDERR: fail_template_ref.carbon:[[@LINE+4]]:12: error: expected name in binding pattern [ExpectedBindingPattern]
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// CHECK:STDERR: fn foo(ref template a:! i32);
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// CHECK:STDERR: ^~~~~~~~
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// CHECK:STDERR:
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fn foo(ref template a:! i32);
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// CHECK:STDOUT: - filename: basic.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: 'IdentifierNameMaybeBeforeSignature', text: 'foo'},
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// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'a'},
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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: 'ExplicitParamList', text: ')', subtree_size: 7},
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// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 10},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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// CHECK:STDOUT: - filename: fail_template_ref.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: 'IdentifierNameMaybeBeforeSignature', text: 'foo'},
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// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'a'},
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// CHECK:STDOUT: {kind: 'TemplateBindingName', text: 'template', subtree_size: 2},
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// CHECK:STDOUT: {kind: 'RefBindingName', text: 'ref', has_error: yes, subtree_size: 3},
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// CHECK:STDOUT: {kind: 'CompileTimeBindingPatternStart', text: ':!', has_error: yes, subtree_size: 4},
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// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
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// CHECK:STDOUT: {kind: 'CompileTimeBindingPattern', text: ':!', has_error: yes, subtree_size: 6},
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// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', has_error: yes, subtree_size: 8},
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// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 11},
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// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
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// CHECK:STDOUT: {kind: 'IdentifierNameMaybeBeforeSignature', text: 'foo'},
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// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'a'},
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// CHECK:STDOUT: {kind: 'TemplateBindingName', text: 'template', has_error: yes, subtree_size: 2},
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// CHECK:STDOUT: {kind: 'RefBindingName', text: 'ref', has_error: yes, subtree_size: 3},
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// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
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// CHECK:STDOUT: {kind: 'LetBindingPattern', text: ':', has_error: yes, subtree_size: 5},
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// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', has_error: yes, subtree_size: 7},
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// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 10},
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// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
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// CHECK:STDOUT: {kind: 'IdentifierNameMaybeBeforeSignature', text: 'foo'},
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// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
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// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'template', has_error: yes},
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// CHECK:STDOUT: {kind: 'InvalidParse', text: 'template', has_error: yes},
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// CHECK:STDOUT: {kind: 'LetBindingPattern', text: 'ref', 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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