carbon-lang/toolchain/parse/testdata/generics/interface/default_fn.carbon

// 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/interface/default_fn.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/parse/testdata/generics/interface/default_fn.carbon

interface Foo {
  fn Scale[self: Self](s: i32) -> Self;

  // Default definition of `Invert` calls `Scale`.
  default fn Invert[self: Self]() -> Self {
    return self.Scale(-1);
  }
}

// CHECK:STDOUT: - filename: default_fn.carbon
// CHECK:STDOUT:   parse_tree: [
// CHECK:STDOUT:     {kind: 'FileStart', text: ''},
// CHECK:STDOUT:         {kind: 'InterfaceIntroducer', text: 'interface'},
// CHECK:STDOUT:         {kind: 'IdentifierNameNotBeforeParams', text: 'Foo'},
// CHECK:STDOUT:       {kind: 'InterfaceDefinitionStart', text: '{', subtree_size: 3},
// CHECK:STDOUT:         {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT:         {kind: 'IdentifierNameBeforeParams', text: 'Scale'},
// CHECK:STDOUT:           {kind: 'ImplicitParamListStart', text: '['},
// CHECK:STDOUT:             {kind: 'SelfValueName', text: 'self'},
// CHECK:STDOUT:             {kind: 'SelfTypeNameExpr', text: 'Self'},
// CHECK:STDOUT:           {kind: 'LetBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT:         {kind: 'ImplicitParamList', text: ']', subtree_size: 5},
// CHECK:STDOUT:           {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT:             {kind: 'IdentifierNameNotBeforeParams', text: 's'},
// CHECK:STDOUT:             {kind: 'IntTypeLiteral', text: 'i32'},
// CHECK:STDOUT:           {kind: 'LetBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT:         {kind: 'ExplicitParamList', text: ')', subtree_size: 5},
// CHECK:STDOUT:           {kind: 'SelfTypeNameExpr', text: 'Self'},
// CHECK:STDOUT:         {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT:       {kind: 'FunctionDecl', text: ';', subtree_size: 15},
// CHECK:STDOUT:           {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT:           {kind: 'DefaultModifier', text: 'default'},
// CHECK:STDOUT:           {kind: 'IdentifierNameBeforeParams', text: 'Invert'},
// CHECK:STDOUT:             {kind: 'ImplicitParamListStart', text: '['},
// CHECK:STDOUT:               {kind: 'SelfValueName', text: 'self'},
// CHECK:STDOUT:               {kind: 'SelfTypeNameExpr', text: 'Self'},
// CHECK:STDOUT:             {kind: 'LetBindingPattern', text: ':', subtree_size: 3},
// CHECK:STDOUT:           {kind: 'ImplicitParamList', text: ']', subtree_size: 5},
// CHECK:STDOUT:             {kind: 'ExplicitParamListStart', text: '('},
// CHECK:STDOUT:           {kind: 'ExplicitParamList', text: ')', subtree_size: 2},
// CHECK:STDOUT:             {kind: 'SelfTypeNameExpr', text: 'Self'},
// CHECK:STDOUT:           {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT:         {kind: 'FunctionDefinitionStart', text: '{', subtree_size: 13},
// CHECK:STDOUT:           {kind: 'ReturnStatementStart', text: 'return'},
// CHECK:STDOUT:                 {kind: 'SelfValueNameExpr', text: 'self'},
// CHECK:STDOUT:                 {kind: 'IdentifierNameNotBeforeParams', text: 'Scale'},
// CHECK:STDOUT:               {kind: 'MemberAccessExpr', text: '.', subtree_size: 3},
// CHECK:STDOUT:             {kind: 'CallExprStart', text: '(', subtree_size: 4},
// CHECK:STDOUT:               {kind: 'IntLiteral', text: '1'},
// CHECK:STDOUT:             {kind: 'PrefixOperatorMinus', text: '-', subtree_size: 2},
// CHECK:STDOUT:           {kind: 'CallExpr', text: ')', subtree_size: 7},
// CHECK:STDOUT:         {kind: 'ReturnStatement', text: ';', subtree_size: 9},
// CHECK:STDOUT:       {kind: 'FunctionDefinition', text: '}', subtree_size: 23},
// CHECK:STDOUT:     {kind: 'InterfaceDefinition', text: '}', subtree_size: 42},
// CHECK:STDOUT:     {kind: 'FileEnd', text: ''},
// CHECK:STDOUT:   ]