mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-29 14:25:06 +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`.
103 lines
4.6 KiB
Plaintext
103 lines
4.6 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/operators/modifier.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/operators/modifier.carbon
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// --- valid.carbon
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fn F() {
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a unsafe as b;
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}
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// --- fail_invalid.carbon
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fn G() {
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// CHECK:STDERR: fail_invalid.carbon:[[@LINE+4]]:5: error: `unsafe` not allowed on operator `or` [ModifierNotAllowedOnOperator]
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// CHECK:STDERR: a unsafe or b;
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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a unsafe or b;
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// CHECK:STDERR: fail_invalid.carbon:[[@LINE+4]]:5: error: `unsafe` not allowed on operator `*` [ModifierNotAllowedOnOperator]
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// CHECK:STDERR: a unsafe * b;
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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a unsafe * b;
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// CHECK:STDERR: fail_invalid.carbon:[[@LINE+4]]:5: error: expected `;` after expression statement [ExpectedExprSemi]
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// CHECK:STDERR: a unsafe;
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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a unsafe;
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// CHECK:STDERR: fail_invalid.carbon:[[@LINE+4]]:3: error: expected expression [ExpectedExpr]
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// CHECK:STDERR: unsafe;
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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unsafe;
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// TODO: It'd be nice to underline both tokens in `unsafe as` here.
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// CHECK:STDERR: fail_invalid.carbon:[[@LINE+8]]:9: error: parentheses are required to disambiguate operator precedence [OperatorRequiresParentheses]
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// CHECK:STDERR: a + b unsafe as c * d;
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_invalid.carbon:[[@LINE+4]]:21: error: parentheses are required to disambiguate operator precedence [OperatorRequiresParentheses]
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// CHECK:STDERR: a + b unsafe as c * d;
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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a + b unsafe as c * d;
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}
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// CHECK:STDOUT: - filename: valid.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: │ ╭─FunctionDefinitionStart '{'
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// CHECK:STDOUT: │ │ ╭─IdentifierNameExpr 'a'
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// CHECK:STDOUT: │ │ ╭─UnsafeModifier 'unsafe'
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// CHECK:STDOUT: │ │ ├─IdentifierNameExpr 'b'
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// CHECK:STDOUT: │ │ ╭─InfixOperatorAs 'as'
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// CHECK:STDOUT: │ ├─ExprStatement ';'
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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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// CHECK:STDOUT: - filename: fail_invalid.carbon
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// CHECK:STDOUT: ╭─FileStart ''
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// CHECK:STDOUT: │ ╭─FunctionIntroducer 'fn'
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// CHECK:STDOUT: │ ├─IdentifierNameMaybeBeforeSignature 'G'
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// CHECK:STDOUT: │ │ ╭─ExplicitParamListStart '('
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// CHECK:STDOUT: │ ├─ExplicitParamList ')'
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// CHECK:STDOUT: │ ╭─FunctionDefinitionStart '{'
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// CHECK:STDOUT: │ │ ╭─IdentifierNameExpr 'a'
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// CHECK:STDOUT: │ │ ╭─ShortCircuitOperandOr 'or' has_error
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// CHECK:STDOUT: │ │ ├─IdentifierNameExpr 'b'
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// CHECK:STDOUT: │ │ ╭─ShortCircuitOperatorOr 'or' has_error
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// CHECK:STDOUT: │ ├─ExprStatement ';'
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// CHECK:STDOUT: │ │ ╭─IdentifierNameExpr 'a'
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// CHECK:STDOUT: │ │ ├─IdentifierNameExpr 'b'
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// CHECK:STDOUT: │ │ ╭─InfixOperatorStar '*' has_error
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// CHECK:STDOUT: │ ├─ExprStatement ';'
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// CHECK:STDOUT: │ │ ╭─IdentifierNameExpr 'a'
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// CHECK:STDOUT: │ ├─ExprStatement ';' has_error
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// CHECK:STDOUT: │ │ ╭─InvalidParse 'unsafe' has_error
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// CHECK:STDOUT: │ ├─ExprStatement ';' has_error
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// CHECK:STDOUT: │ │ ╭─IdentifierNameExpr 'a'
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// CHECK:STDOUT: │ │ ├─IdentifierNameExpr 'b'
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// CHECK:STDOUT: │ │ ╭─InfixOperatorPlus '+'
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// CHECK:STDOUT: │ │ ╭─UnsafeModifier 'unsafe' has_error
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// CHECK:STDOUT: │ │ ├─IdentifierNameExpr 'c'
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// CHECK:STDOUT: │ │ ╭─InfixOperatorAs 'as' has_error
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// CHECK:STDOUT: │ │ ├─IdentifierNameExpr 'd'
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// CHECK:STDOUT: │ │ ╭─InfixOperatorStar '*' has_error
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// CHECK:STDOUT: │ ├─ExprStatement ';'
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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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