mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-11-14 16:08:37 +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
124 lines
2.4 KiB
Plaintext
124 lines
2.4 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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//
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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/interop/cpp/function/export/function.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/interop/cpp/function/export/function.carbon
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// --- other_function.carbon
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package OtherFunction;
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fn F1() {}
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// --- function.carbon
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library "[[@TEST_NAME]]";
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import OtherFunction;
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import Cpp inline '''
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void CallF1() {
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Carbon::OtherFunction::F1();
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}
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''';
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// --- other_return_int.carbon
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package OtherReturnInt;
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fn F2() -> i32 { return 0; }
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// --- return_int.carbon
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library "[[@TEST_NAME]]";
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import OtherReturnInt;
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import Cpp inline '''
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int CallF2() {
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return Carbon::OtherReturnInt::F2();
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}
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''';
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// --- other_args.carbon
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package OtherArgs;
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fn F3(_: i32) {}
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// --- args.carbon
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library "[[@TEST_NAME]]";
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import OtherArgs;
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import Cpp inline '''
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void CallF3() {
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Carbon::OtherArgs::F3(123);
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}
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''';
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// --- ref_arg.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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fn RefF(ref n: i32);
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inline Cpp '''
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void CallRefF() {
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int n = 0;
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Carbon::RefF(n);
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}
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''';
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// --- using.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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fn UsingF();
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inline Cpp '''
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using Carbon::UsingF;
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void CallUsingF() { UsingF(); }
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''';
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// --- other_generic.carbon
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package OtherGeneric;
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fn HasGenericArg(generic T: type, a: T) { a; }
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// --- fail_todo_generic.carbon
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library "[[@TEST_NAME]]";
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// CHECK:STDERR: imported from: fail_todo_generic.carbon:[[@LINE+4]]:1 [InImport]
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// CHECK:STDERR: other_generic.carbon:3:1-41: error: 1 argument passed to function expecting 2 arguments [CallArgCountMismatch]
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// CHECK:STDERR: other_generic.carbon:3:1-41: note: calling function declared here [InCallToEntity]
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// CHECK:STDERR:
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import OtherGeneric;
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import Cpp inline '''
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void CallHasGenericArg() {
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Carbon::OtherGeneric::HasGenericArg<int>(123);
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}
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''';
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// --- other_deduced.carbon
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package OtherDeduced;
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fn HasDeducedArg[T: type](a: T) { a; }
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// --- deduced.carbon
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library "[[@TEST_NAME]]";
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import OtherDeduced;
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import Cpp inline '''
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void CallHasDeducedArg() {
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Carbon::OtherDeduced::HasDeducedArg(123);
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}
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''';
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