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26381f6eaf34fbfd37b23c36f6bb6a7f55a36f0a
carbon-lang/toolchain/parse/testdata/function/decl_statement.carbon
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Dana Jansens 26381f6eaf Handle parsing of require...impls declarations (#6255) 
Check is not implemented yet, but some tests are added.
2025-10-23 18:34:52 +00:00

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// 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/function/decl_statement.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/parse/testdata/function/decl_statement.carbon
// --- valid.carbon
// These are expected to work.
fn F() {
alias A = i32;
class A {}
base class B {}
abstract class Abstract {}
fn F() {}
constraint C {}
interface I {}
impl A as I {}
final impl A as I {}
choice C {}
let n: i32 = 0;
var v: i32;
}
// --- syntactically_valid.carbon
// These parse but should not type-check.
fn F() {
adapt A;
extend adapt A;
extend base: B;
extend impl as I;
namespace N;
default fn F();
impl fn G();
override fn H();
virtual fn H();
private var v: i32;
protected var v: i32;
}
// CHECK:STDOUT: - filename: valid.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'F'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
// CHECK:STDOUT: {kind: 'AliasIntroducer', text: 'alias'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'A'},
// CHECK:STDOUT: {kind: 'AliasInitializer', text: '='},
// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
// CHECK:STDOUT: {kind: 'Alias', text: ';', subtree_size: 5},
// CHECK:STDOUT: {kind: 'ClassIntroducer', text: 'class'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'A'},
// CHECK:STDOUT: {kind: 'ClassDefinitionStart', text: '{', subtree_size: 3},
// CHECK:STDOUT: {kind: 'ClassDefinition', text: '}', subtree_size: 4},
// CHECK:STDOUT: {kind: 'ClassIntroducer', text: 'class'},
// CHECK:STDOUT: {kind: 'BaseModifier', text: 'base'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'B'},
// CHECK:STDOUT: {kind: 'ClassDefinitionStart', text: '{', subtree_size: 4},
// CHECK:STDOUT: {kind: 'ClassDefinition', text: '}', subtree_size: 5},
// CHECK:STDOUT: {kind: 'ClassIntroducer', text: 'class'},
// CHECK:STDOUT: {kind: 'AbstractModifier', text: 'abstract'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'Abstract'},
// CHECK:STDOUT: {kind: 'ClassDefinitionStart', text: '{', subtree_size: 4},
// CHECK:STDOUT: {kind: 'ClassDefinition', text: '}', subtree_size: 5},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'F'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 6},
// CHECK:STDOUT: {kind: 'NamedConstraintIntroducer', text: 'constraint'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'C'},
// CHECK:STDOUT: {kind: 'NamedConstraintDefinitionStart', text: '{', subtree_size: 3},
// CHECK:STDOUT: {kind: 'NamedConstraintDefinition', text: '}', subtree_size: 4},
// CHECK:STDOUT: {kind: 'InterfaceIntroducer', text: 'interface'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'I'},
// CHECK:STDOUT: {kind: 'InterfaceDefinitionStart', text: '{', subtree_size: 3},
// CHECK:STDOUT: {kind: 'InterfaceDefinition', text: '}', subtree_size: 4},
// CHECK:STDOUT: {kind: 'ImplIntroducer', text: 'impl'},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'A'},
// CHECK:STDOUT: {kind: 'ImplTypeAs', text: 'as', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'I'},
// CHECK:STDOUT: {kind: 'ImplDefinitionStart', text: '{', subtree_size: 5},
// CHECK:STDOUT: {kind: 'ImplDefinition', text: '}', subtree_size: 6},
// CHECK:STDOUT: {kind: 'ImplIntroducer', text: 'impl'},
// CHECK:STDOUT: {kind: 'FinalModifier', text: 'final'},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'A'},
// CHECK:STDOUT: {kind: 'ImplTypeAs', text: 'as', subtree_size: 2},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'I'},
// CHECK:STDOUT: {kind: 'ImplDefinitionStart', text: '{', subtree_size: 6},
// CHECK:STDOUT: {kind: 'ImplDefinition', text: '}', subtree_size: 7},
// CHECK:STDOUT: {kind: 'ChoiceIntroducer', text: 'choice'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'C'},
// CHECK:STDOUT: {kind: 'ChoiceDefinitionStart', text: '{', subtree_size: 3},
// CHECK:STDOUT: {kind: 'ChoiceDefinition', text: '}', subtree_size: 4},
// CHECK:STDOUT: {kind: 'LetIntroducer', text: 'let'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'n'},
// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
// CHECK:STDOUT: {kind: 'LetBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'LetInitializer', text: '='},
// CHECK:STDOUT: {kind: 'IntLiteral', text: '0'},
// CHECK:STDOUT: {kind: 'LetDecl', text: ';', subtree_size: 7},
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'v'},
// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 6},
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 69},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
// CHECK:STDOUT: - filename: syntactically_valid.carbon
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'F'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 5},
// CHECK:STDOUT: {kind: 'AdaptIntroducer', text: 'adapt'},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'A'},
// CHECK:STDOUT: {kind: 'AdaptDecl', text: ';', subtree_size: 3},
// CHECK:STDOUT: {kind: 'AdaptIntroducer', text: 'adapt'},
// CHECK:STDOUT: {kind: 'ExtendModifier', text: 'extend'},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'A'},
// CHECK:STDOUT: {kind: 'AdaptDecl', text: ';', subtree_size: 4},
// CHECK:STDOUT: {kind: 'BaseIntroducer', text: 'base'},
// CHECK:STDOUT: {kind: 'ExtendModifier', text: 'extend'},
// CHECK:STDOUT: {kind: 'BaseColon', text: ':'},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'B'},
// CHECK:STDOUT: {kind: 'BaseDecl', text: ';', subtree_size: 5},
// CHECK:STDOUT: {kind: 'ImplIntroducer', text: 'impl'},
// CHECK:STDOUT: {kind: 'ExtendModifier', text: 'extend'},
// CHECK:STDOUT: {kind: 'ImplDefaultSelfAs', text: 'as'},
// CHECK:STDOUT: {kind: 'IdentifierNameExpr', text: 'I'},
// CHECK:STDOUT: {kind: 'ImplDecl', text: ';', subtree_size: 5},
// CHECK:STDOUT: {kind: 'NamespaceStart', text: 'namespace'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'N'},
// CHECK:STDOUT: {kind: 'Namespace', text: ';', subtree_size: 3},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'DefaultModifier', text: 'default'},
// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'F'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 6},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'ImplModifier', text: 'impl'},
// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'G'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 6},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'OverrideModifier', text: 'override'},
// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'H'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 6},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'VirtualModifier', text: 'virtual'},
// CHECK:STDOUT: {kind: 'IdentifierNameBeforeParams', text: 'H'},
// CHECK:STDOUT: {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT: {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDecl', text: ';', subtree_size: 6},
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'PrivateModifier', text: 'private'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'v'},
// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 7},
// CHECK:STDOUT: {kind: 'VariableIntroducer', text: 'var'},
// CHECK:STDOUT: {kind: 'ProtectedModifier', text: 'protected'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'v'},
// CHECK:STDOUT: {kind: 'IntTypeLiteral', text: 'i32'},
// CHECK:STDOUT: {kind: 'VarBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'VariablePattern', text: 'var', subtree_size: 4},
// CHECK:STDOUT: {kind: 'VariableDecl', text: ';', subtree_size: 7},
// CHECK:STDOUT: {kind: 'FunctionDefinition', text: '}', subtree_size: 64},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
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