mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-04 09:01:04 +01:00
Geoff Romer
6429c1655c
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`.
71 lines
3.5 KiB
Plaintext
71 lines
3.5 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/match/fail_cases_after_default.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/match/fail_cases_after_default.carbon
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fn f() -> i32 {
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var x: i32 = 3;
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match (x) {
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default => { return 1; }
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// CHECK:STDERR: fail_cases_after_default.carbon:[[@LINE+4]]:5: error: unreachable case; `case` occurs after the `default` [UnreachableMatchCase]
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// CHECK:STDERR: case a: i32 => { return 2; }
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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case a: i32 => { return 2; }
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// CHECK:STDERR: fail_cases_after_default.carbon:[[@LINE+4]]:5: error: unreachable case; `default` occurs after the `default` [UnreachableMatchCase]
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// CHECK:STDERR: default => { return 3; }
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// CHECK:STDERR: ^~~~~~~
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// CHECK:STDERR:
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default => { return 3; }
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// CHECK:STDERR: fail_cases_after_default.carbon:[[@LINE+4]]:5: error: unreachable case; `case` occurs after the `default` [UnreachableMatchCase]
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// CHECK:STDERR: case (a: i32) if (a == 4) => { return 4; }
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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case (a: i32) if (a == 4) => { return 4; }
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}
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return 0;
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}
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// CHECK:STDOUT: - filename: fail_cases_after_default.carbon
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// CHECK:STDOUT: ╭─FileStart ''
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// CHECK:STDOUT: │ ╭─FunctionIntroducer 'fn'
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// CHECK:STDOUT: │ ├─IdentifierNameMaybeBeforeSignature 'f'
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// CHECK:STDOUT: │ │ ╭─ExplicitParamListStart '('
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// CHECK:STDOUT: │ ├─ExplicitParamList ')'
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// CHECK:STDOUT: │ │ ╭─IntTypeLiteral 'i32'
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// CHECK:STDOUT: │ ├─ReturnType '->'
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// CHECK:STDOUT: │ ╭─FunctionDefinitionStart '{'
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// CHECK:STDOUT: │ │ ╭─VariableIntroducer 'var'
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// CHECK:STDOUT: │ │ │ ╭─IdentifierNameNotBeforeSignature 'x'
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// CHECK:STDOUT: │ │ │ ├─BindingPatternTypeStart ':'
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// CHECK:STDOUT: │ │ │ ├─IntTypeLiteral 'i32'
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// CHECK:STDOUT: │ │ │ ╭─VarBindingPattern ':'
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// CHECK:STDOUT: │ │ ├─VariablePattern 'var'
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// CHECK:STDOUT: │ │ ├─VariableInitializer '='
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// CHECK:STDOUT: │ │ ├─IntLiteral '3'
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// CHECK:STDOUT: │ ├─VariableDecl ';'
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// CHECK:STDOUT: │ │ ╭─MatchIntroducer 'match'
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// CHECK:STDOUT: │ │ │ ╭─MatchConditionStart '('
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// CHECK:STDOUT: │ │ │ ├─IdentifierNameExpr 'x'
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// CHECK:STDOUT: │ │ ├─MatchCondition ')'
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// CHECK:STDOUT: │ │ ╭─MatchStatementStart '{'
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// CHECK:STDOUT: │ │ │ ╭─MatchDefaultIntroducer 'default'
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// CHECK:STDOUT: │ │ │ ╭─MatchDefault '=>'
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// CHECK:STDOUT: │ │ │ ╭─MatchHandlerStart '{'
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// CHECK:STDOUT: │ │ │ │ ╭─ReturnStatementStart 'return'
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// CHECK:STDOUT: │ │ │ │ ├─IntLiteral '1'
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// CHECK:STDOUT: │ │ │ ├─ReturnStatement ';'
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// CHECK:STDOUT: │ │ ├─MatchHandler '}'
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// CHECK:STDOUT: │ ├─MatchStatement '}' has_error
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// CHECK:STDOUT: │ │ ╭─ReturnStatementStart 'return'
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// CHECK:STDOUT: │ │ ├─IntLiteral '0'
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// CHECK:STDOUT: │ ├─ReturnStatement ';'
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// CHECK:STDOUT: ├─FunctionDefinition '}'
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// CHECK:STDOUT: ├─FileEnd ''
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// CHECK:STDOUT: (root)
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