mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-11-15 18:58:11 +00:00
Chandler Carruth
2c9739799b
Diagnostic rendering was part of the data model: `Loc::FormatLocation` and `Loc::FormatSnippet` wrote plain text to a stream, so no capability, color, or terminal width could reach them. A diagnostic is now one message with labels, contexts, and location information attached, and `Diagnostics::Renderer` draws it into a `Terminal::Buffer`. The design is in `toolchain/docs/diagnostics_rendering.md` (#7668), authoring in `toolchain/docs/diagnostics.md`. Before: ``` example.carbon:6:3: error: 1 argument passed to function expecting 0 arguments Run0(1); ^~~~~~~ example.carbon:3:1: note: calling function declared here fn Run0() {} ^~~~~~~~~~~ ``` After: ``` error: 1 argument passed to function expecting 0 arguments ╭─┤ example.carbon:6:3 ┆ 3 │ fn Run0() {} · ─────┬───── · ╰──┤ calling function declared here ┆ -> 6 │ Run0(1); · ─────── ╰──────────── ``` `--no-diagnostic-snippets` gives a compact form, `example.carbon:6:3-9`. File tests use it; the rendering tests under `toolchain/diagnostics/testdata` ask for snippets. C++ interop diagnostics are data now rather than text Clang drew: `SemIR::ClangSourceLocId` names a `clang::SourceRange`, and a Clang location is marked as the point it names. `StreamConsumer` moves to a `:renderer` target that `:emitter` does not depend on, keeping `common/terminal` out of `consumer.h`. Capabilities come from the file behind the error stream, so tests get plain ASCII. `renderer_fuzzer` draws diagnostics built from fuzzer bytes with every capability combination, since a shape the renderer doesn't expect must never be why the compiler dies while reporting a problem. TODOs mark the follow-ups: line weights and crossing lines, wrapping that keeps a quoted type whole, and ordering diagnostics that share a byte offset. Also: `IncorrectExtension`'s hint moves into its message, since its note had no location of its own, and `strip_noise` in `check_diagnostics.py` blanks multi-line `#define`s instead of deleting them. Assisted-by: Claude Code
74 lines
3.7 KiB
Plaintext
74 lines
3.7 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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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.carbon
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// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
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// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
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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/check/testdata/pointer/fail_deref_error.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/check/testdata/pointer/fail_deref_error.carbon
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// CHECK:STDERR: fail_deref_error.carbon:[[@LINE+2]]:15-24: error: name `undeclared` not found [NameNotFound]
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// CHECK:STDERR:
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let n: i32 = *undeclared;
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// CHECK:STDERR: fail_deref_error.carbon:[[@LINE+2]]:15-24: error: name `undeclared` not found [NameNotFound]
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// CHECK:STDERR:
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let n2: i32 = undeclared->foo;
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// CHECK:STDOUT: --- fail_deref_error.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: type: type = facet_type <type> [concrete]
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// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
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// CHECK:STDOUT: %Int.type: type = parameterized_class_name_type @Int [concrete]
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// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
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// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
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// CHECK:STDOUT: %pattern_type.d94: type = pattern_type %i32 [concrete]
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// CHECK:STDOUT: %n.patt: %pattern_type.d94 = value_binding_pattern n [concrete]
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// CHECK:STDOUT: %n2.patt: %pattern_type.d94 = value_binding_pattern n2 [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
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// CHECK:STDOUT: .Int = %Core.Int
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// CHECK:STDOUT: import Core//prelude
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// CHECK:STDOUT: import Core//prelude/...
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
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// CHECK:STDOUT: .Core = imports.%Core
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// CHECK:STDOUT: .n = %n
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// CHECK:STDOUT: .undeclared = <poisoned>
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// CHECK:STDOUT: .n2 = %n2
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.import = import Core
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// CHECK:STDOUT: %i32.loc17: type = type_literal constants.%i32 [concrete = constants.%i32]
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// CHECK:STDOUT: %n: %i32 = wrapper_binding n, <error> [concrete = <error>]
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %n.patt: %pattern_type.d94 = value_binding_pattern n [concrete = constants.%n.patt]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %i32.loc20: type = type_literal constants.%i32 [concrete = constants.%i32]
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// CHECK:STDOUT: %n2: %i32 = wrapper_binding n2, <error> [concrete = <error>]
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %n2.patt: %pattern_type.d94 = value_binding_pattern n2 [concrete = constants.%n2.patt]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @__global_init() {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %undeclared.ref.loc17: <error> = name_ref undeclared, <error> [concrete = <error>]
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// CHECK:STDOUT: %.loc17: ref <error> = deref <error> [concrete = <error>]
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// CHECK:STDOUT: %undeclared.ref.loc20: <error> = name_ref undeclared, <error> [concrete = <error>]
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// CHECK:STDOUT: %.loc20: ref <error> = deref <error> [concrete = <error>]
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// CHECK:STDOUT: %foo.ref: <error> = name_ref foo, <error> [concrete = <error>]
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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