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carbon-lang/toolchain/parser/testdata/generics/interface/basic.carbon
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Jon Ross-Perkins 4083d7f5b9 Reorganize interface parsing to be more consistent with other declarations. (#2646) 
The comments in parse_node_kind.def capture the change being made here.

Before:

```
//   _external_: DeclaredName
//     InterfaceBodyStart
//     _external_: statements
//   InterfaceBodyEnd
// InterfaceDefinition
```

After:

```
//     InterfaceIntroducer
//     DeclaredName
//   InterfaceDefinitionStart
//   _external_: declarations
// InterfaceDefinition
```

Really I just want to treat introduced things consistently. `var` defines my philosophy here: it doesn't always have a `DeclaredName`, so the `VarIntroducer` _must_ be the bounding node. By being consistent with that, I believe that overall the structure becomes easier to understand (that is, there are fewer inconsistencies to understand).

This also adds InterfaceDeclaration, since I think it can be predicted we'll have that, and it's helpful for making recover consistent with HandleDeclarationError.

Similarly, I'm also trying to standardize the loop processing a little with HandleDeclarationLoop. In the current approach, InterfaceDefinitionFinish isn't a necessary state, so I'm removing it.
2023-03-06 16:31:01 -08:00

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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
// RUN: %{carbon-run-parser}
// CHECK:STDOUT: [
// CHECK:STDOUT: {kind: 'InterfaceIntroducer', text: 'interface'},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'Foo'},
// CHECK:STDOUT: {kind: 'InterfaceDefinitionStart', text: '{', subtree_size: 3},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'Add'},
// CHECK:STDOUT: {kind: 'DeducedParameterListStart', text: '['},
// CHECK:STDOUT: {kind: 'SelfDeducedParameter', text: 'self'},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'DeducedParameterList', text: ']', subtree_size: 5},
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'b'},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 5},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDeclaration', text: ';', subtree_size: 15},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'Add'},
// CHECK:STDOUT: {kind: 'DeducedParameterListStart', text: '['},
// CHECK:STDOUT: {kind: 'SelfDeducedParameter', text: 'self'},
// CHECK:STDOUT: {kind: 'NameReference', text: 'foo'},
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'DeducedParameterList', text: ']', subtree_size: 5},
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'b'},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 5},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDeclaration', text: ';', subtree_size: 15},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'Sub'},
// CHECK:STDOUT: {kind: 'DeducedParameterListStart', text: '['},
// CHECK:STDOUT: {kind: 'SelfDeducedParameter', text: ':'},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 2},
// CHECK:STDOUT: {kind: 'PatternBinding', text: 'self', subtree_size: 4},
// CHECK:STDOUT: {kind: 'Address', text: 'addr', subtree_size: 5},
// CHECK:STDOUT: {kind: 'DeducedParameterList', text: ']', subtree_size: 7},
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'b'},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 5},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDeclaration', text: ';', subtree_size: 17},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'Sub'},
// CHECK:STDOUT: {kind: 'DeducedParameterListStart', text: '['},
// CHECK:STDOUT: {kind: 'SelfDeducedParameter', text: ':'},
// CHECK:STDOUT: {kind: 'NameReference', text: 'foo'},
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 2},
// CHECK:STDOUT: {kind: 'PatternBinding', text: 'self', subtree_size: 4},
// CHECK:STDOUT: {kind: 'Address', text: 'addr', subtree_size: 5},
// CHECK:STDOUT: {kind: 'DeducedParameterList', text: ']', subtree_size: 7},
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'b'},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 5},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDeclaration', text: ';', subtree_size: 17},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'FooFactory'},
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDeclaration', text: ';', subtree_size: 7},
// CHECK:STDOUT: {kind: 'InterfaceDefinition', text: '}', subtree_size: 75},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
interface Foo {
fn Add[self: Self](b: Self) -> Self;
fn Add[self: foo](b: Self) -> Self;
fn Sub[addr self: Self*](b: Self) -> Self;
fn Sub[addr self: foo*](b: Self) -> Self;
fn FooFactory() -> Self;
}
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