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carbon-lang/toolchain/parse/testdata/let/let_struct.carbon
T
Geoff Romer 6429c1655c Make the tree structure more explicit in parse dumps (#7591) 
It's hard to track 2-space indent levels across large vertical gaps, and
it can be hard to suppress the instinct to read the dump as if it were
preorder. This change introduces a new dump mode that addresses both
problems by using box-drawing characters to explicitly represent the
parent-child edges of the tree. This new mode is the default, but the
old behavior remains available with
`--parse-dump-format=yaml-postorder`.
2026-07-31 16:44:18 +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/let/let_struct.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/parse/testdata/let/let_struct.carbon
// --- let_struct.carbon
let {.s = s: str, .i = i: i32} = {.s = "hello", .i = 1};
// --- let_struct_shorthand.carbon
let {s: str, i: i32} = {.s = "hello shorthand", .i = 2};
// --- let_struct_mixed.carbon
let {.s = s: str, i: i32} = {.s = "hello mixed", .i = 2};
// --- let_ref_struct.carbon
let {.s = ref s: str, .i = i: i32} = {.s = "hello ref", .i = 3};
// --- let_ref_struct_shorthand.carbon
let {ref s: str, i: i32} = {.s = "hello ref shorthand", .i = 4};
// CHECK:STDOUT: - filename: let_struct.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LetIntroducer 'let'
// CHECK:STDOUT: │ │ ╭─StructPatternStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ │ ├─StringTypeLiteral 'str'
// CHECK:STDOUT: │ │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ │ ├─StructPatternDesignatedField '='
// CHECK:STDOUT: │ │ ├─PatternListComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ │ ├─IntTypeLiteral 'i32'
// CHECK:STDOUT: │ │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ │ ├─StructPatternDesignatedField '='
// CHECK:STDOUT: │ ├─StructPattern '}'
// CHECK:STDOUT: │ ├─LetInitializer '='
// CHECK:STDOUT: │ │ ╭─StructLiteralStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─StringLiteral '"hello"'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ │ ├─StructLiteralComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─IntLiteral '1'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ ├─StructLiteral '}'
// CHECK:STDOUT: ├─LetDecl ';'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: let_struct_shorthand.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LetIntroducer 'let'
// CHECK:STDOUT: │ │ ╭─StructPatternStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ ├─StringTypeLiteral 'str'
// CHECK:STDOUT: │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ │ ├─PatternListComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ ├─IntTypeLiteral 'i32'
// CHECK:STDOUT: │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ ├─StructPattern '}'
// CHECK:STDOUT: │ ├─LetInitializer '='
// CHECK:STDOUT: │ │ ╭─StructLiteralStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─StringLiteral '"hello shorthand"'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ │ ├─StructLiteralComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─IntLiteral '2'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ ├─StructLiteral '}'
// CHECK:STDOUT: ├─LetDecl ';'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: let_struct_mixed.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LetIntroducer 'let'
// CHECK:STDOUT: │ │ ╭─StructPatternStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ │ ├─StringTypeLiteral 'str'
// CHECK:STDOUT: │ │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ │ ├─StructPatternDesignatedField '='
// CHECK:STDOUT: │ │ ├─PatternListComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ ├─IntTypeLiteral 'i32'
// CHECK:STDOUT: │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ ├─StructPattern '}'
// CHECK:STDOUT: │ ├─LetInitializer '='
// CHECK:STDOUT: │ │ ╭─StructLiteralStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─StringLiteral '"hello mixed"'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ │ ├─StructLiteralComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─IntLiteral '2'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ ├─StructLiteral '}'
// CHECK:STDOUT: ├─LetDecl ';'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: let_ref_struct.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LetIntroducer 'let'
// CHECK:STDOUT: │ │ ╭─StructPatternStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ │ ╭─RefBindingName 'ref'
// CHECK:STDOUT: │ │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ │ ├─StringTypeLiteral 'str'
// CHECK:STDOUT: │ │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ │ ├─StructPatternDesignatedField '='
// CHECK:STDOUT: │ │ ├─PatternListComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ │ ├─IntTypeLiteral 'i32'
// CHECK:STDOUT: │ │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ │ ├─StructPatternDesignatedField '='
// CHECK:STDOUT: │ ├─StructPattern '}'
// CHECK:STDOUT: │ ├─LetInitializer '='
// CHECK:STDOUT: │ │ ╭─StructLiteralStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─StringLiteral '"hello ref"'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ │ ├─StructLiteralComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─IntLiteral '3'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ ├─StructLiteral '}'
// CHECK:STDOUT: ├─LetDecl ';'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: let_ref_struct_shorthand.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LetIntroducer 'let'
// CHECK:STDOUT: │ │ ╭─StructPatternStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ╭─RefBindingName 'ref'
// CHECK:STDOUT: │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ ├─StringTypeLiteral 'str'
// CHECK:STDOUT: │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ │ ├─PatternListComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ├─BindingPatternTypeStart ':'
// CHECK:STDOUT: │ │ │ ├─IntTypeLiteral 'i32'
// CHECK:STDOUT: │ │ ├─LetBindingPattern ':'
// CHECK:STDOUT: │ ├─StructPattern '}'
// CHECK:STDOUT: │ ├─LetInitializer '='
// CHECK:STDOUT: │ │ ╭─StructLiteralStart '{'
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 's'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─StringLiteral '"hello ref shorthand"'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ │ ├─StructLiteralComma ','
// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'i'
// CHECK:STDOUT: │ │ │ ╭─StructFieldDesignator '.'
// CHECK:STDOUT: │ │ │ ├─IntLiteral '4'
// CHECK:STDOUT: │ │ ├─StructLiteralField '='
// CHECK:STDOUT: │ ├─StructLiteral '}'
// CHECK:STDOUT: ├─LetDecl ';'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
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