carbon-language/carbon-lang
1
0 Fork 0
mirror of https://github.com/carbon-language/carbon-lang.git synced 2026-11-15 11:08:31 +00:00
Code Issues Packages Projects Releases 10 Wiki Activity
Files
77fc0a3ef3bfb4e7860bbfabf75e575da2f2754b
carbon-lang/toolchain/parse/testdata/generics/interface/fail_associated_constants.carbon
T
Chandler Carruth 2c9739799b Render diagnostics through the terminal library (#7683) 
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
2026-10-15 06:08:57 +00:00

221 lines
9.2 KiB
Plaintext
Raw Blame History

// 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/generics/interface/fail_associated_constants.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/parse/testdata/generics/interface/fail_associated_constants.carbon
// --- fail_tuple_pattern.carbon
library "[[@TEST_NAME]]";
interface I {
// CHECK:STDERR: fail_tuple_pattern.carbon:[[@LINE+2]]:7: error: expected identifier in associated constant declaration [ExpectedAssociatedConstantIdentifier]
// CHECK:STDERR:
let (T: type, U: type);
}
// --- fail_tuple_pattern_with_default.carbon
library "[[@TEST_NAME]]";
interface I {
// CHECK:STDERR: fail_tuple_pattern_with_default.carbon:[[@LINE+2]]:15: error: expected identifier in associated constant declaration [ExpectedAssociatedConstantIdentifier]
// CHECK:STDERR:
default let (T: type, U: type) = ({}, {});
}
// --- fail_var_pattern.carbon
library "[[@TEST_NAME]]";
interface I {
// CHECK:STDERR: fail_var_pattern.carbon:[[@LINE+2]]:7-9: error: expected identifier in associated constant declaration [ExpectedAssociatedConstantIdentifier]
// CHECK:STDERR:
let var T: type;
}
// --- fail_var_pattern_with_default.carbon
library "[[@TEST_NAME]]";
interface I {
// CHECK:STDERR: fail_var_pattern_with_default.carbon:[[@LINE+2]]:15-17: error: expected identifier in associated constant declaration [ExpectedAssociatedConstantIdentifier]
// CHECK:STDERR:
default let var T: type = {};
}
// --- fail_not_constant.carbon
library "[[@TEST_NAME]]";
interface I {
// CHECK:STDERR: fail_not_constant.carbon:[[@LINE+2]]:7-13: error: phase keyword is not allowed on an associated constant [PhaseKeywordInAssociatedConstant]
// CHECK:STDERR:
let runtime a: {.b: ()};
}
// --- fail_template.carbon
library "[[@TEST_NAME]]";
interface I {
// CHECK:STDERR: fail_template.carbon:[[@LINE+2]]:7-14: error: phase keyword is not allowed on an associated constant [PhaseKeywordInAssociatedConstant]
// CHECK:STDERR:
let template T: type;
}
// --- fail_generic.carbon
library "[[@TEST_NAME]]";
interface I {
// CHECK:STDERR: fail_generic.carbon:[[@LINE+2]]:7-13: error: phase keyword is not allowed on an associated constant [PhaseKeywordInAssociatedConstant]
// CHECK:STDERR:
let generic a: type;
}
// --- fail_underscore.carbon
library "[[@TEST_NAME]]";
interface I {
// CHECK:STDERR: fail_underscore.carbon:[[@LINE+2]]:7: error: expected identifier in associated constant declaration [ExpectedAssociatedConstantIdentifier]
// CHECK:STDERR:
let _: {};
}
// --- fail_missing_colon.carbon
library "[[@TEST_NAME]]";
interface I {
// CHECK:STDERR: fail_missing_colon.carbon:[[@LINE+2]]:8: error: expected `:` in associated constant declaration [ExpectedAssociatedConstantColon]
// CHECK:STDERR:
let a;
}
// CHECK:STDOUT: - filename: fail_tuple_pattern.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LibraryIntroducer 'library'
// CHECK:STDOUT: │ ├─LibraryName '"tuple_pattern"'
// CHECK:STDOUT: ├─LibraryDecl ';'
// CHECK:STDOUT: │ ╭─InterfaceIntroducer 'interface'
// CHECK:STDOUT: │ ├─IdentifierNameNotBeforeSignature 'I'
// CHECK:STDOUT: │ ╭─InterfaceDefinitionStart '{'
// CHECK:STDOUT: │ │ ╭─AssociatedConstantIntroducer 'let'
// CHECK:STDOUT: │ ├─AssociatedConstantDecl ';' has_error
// CHECK:STDOUT: ├─InterfaceDefinition '}'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: fail_tuple_pattern_with_default.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LibraryIntroducer 'library'
// CHECK:STDOUT: │ ├─LibraryName '"tuple_pattern_with_default"'
// CHECK:STDOUT: ├─LibraryDecl ';'
// CHECK:STDOUT: │ ╭─InterfaceIntroducer 'interface'
// CHECK:STDOUT: │ ├─IdentifierNameNotBeforeSignature 'I'
// CHECK:STDOUT: │ ╭─InterfaceDefinitionStart '{'
// CHECK:STDOUT: │ │ ╭─AssociatedConstantIntroducer 'let'
// CHECK:STDOUT: │ │ ├─DefaultModifier 'default'
// CHECK:STDOUT: │ ├─AssociatedConstantDecl ';' has_error
// CHECK:STDOUT: ├─InterfaceDefinition '}'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: fail_var_pattern.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LibraryIntroducer 'library'
// CHECK:STDOUT: │ ├─LibraryName '"var_pattern"'
// CHECK:STDOUT: ├─LibraryDecl ';'
// CHECK:STDOUT: │ ╭─InterfaceIntroducer 'interface'
// CHECK:STDOUT: │ ├─IdentifierNameNotBeforeSignature 'I'
// CHECK:STDOUT: │ ╭─InterfaceDefinitionStart '{'
// CHECK:STDOUT: │ │ ╭─AssociatedConstantIntroducer 'let'
// CHECK:STDOUT: │ ├─AssociatedConstantDecl ';' has_error
// CHECK:STDOUT: ├─InterfaceDefinition '}'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: fail_var_pattern_with_default.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LibraryIntroducer 'library'
// CHECK:STDOUT: │ ├─LibraryName '"var_pattern_with_default"'
// CHECK:STDOUT: ├─LibraryDecl ';'
// CHECK:STDOUT: │ ╭─InterfaceIntroducer 'interface'
// CHECK:STDOUT: │ ├─IdentifierNameNotBeforeSignature 'I'
// CHECK:STDOUT: │ ╭─InterfaceDefinitionStart '{'
// CHECK:STDOUT: │ │ ╭─AssociatedConstantIntroducer 'let'
// CHECK:STDOUT: │ │ ├─DefaultModifier 'default'
// CHECK:STDOUT: │ ├─AssociatedConstantDecl ';' has_error
// CHECK:STDOUT: ├─InterfaceDefinition '}'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: fail_not_constant.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LibraryIntroducer 'library'
// CHECK:STDOUT: │ ├─LibraryName '"not_constant"'
// CHECK:STDOUT: ├─LibraryDecl ';'
// CHECK:STDOUT: │ ╭─InterfaceIntroducer 'interface'
// CHECK:STDOUT: │ ├─IdentifierNameNotBeforeSignature 'I'
// CHECK:STDOUT: │ ╭─InterfaceDefinitionStart '{'
// CHECK:STDOUT: │ │ ╭─AssociatedConstantIntroducer 'let'
// CHECK:STDOUT: │ ├─AssociatedConstantDecl ';' has_error
// CHECK:STDOUT: ├─InterfaceDefinition '}'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: fail_template.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LibraryIntroducer 'library'
// CHECK:STDOUT: │ ├─LibraryName '"template"'
// CHECK:STDOUT: ├─LibraryDecl ';'
// CHECK:STDOUT: │ ╭─InterfaceIntroducer 'interface'
// CHECK:STDOUT: │ ├─IdentifierNameNotBeforeSignature 'I'
// CHECK:STDOUT: │ ╭─InterfaceDefinitionStart '{'
// CHECK:STDOUT: │ │ ╭─AssociatedConstantIntroducer 'let'
// CHECK:STDOUT: │ ├─AssociatedConstantDecl ';' has_error
// CHECK:STDOUT: ├─InterfaceDefinition '}'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: fail_generic.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LibraryIntroducer 'library'
// CHECK:STDOUT: │ ├─LibraryName '"generic"'
// CHECK:STDOUT: ├─LibraryDecl ';'
// CHECK:STDOUT: │ ╭─InterfaceIntroducer 'interface'
// CHECK:STDOUT: │ ├─IdentifierNameNotBeforeSignature 'I'
// CHECK:STDOUT: │ ╭─InterfaceDefinitionStart '{'
// CHECK:STDOUT: │ │ ╭─AssociatedConstantIntroducer 'let'
// CHECK:STDOUT: │ ├─AssociatedConstantDecl ';' has_error
// CHECK:STDOUT: ├─InterfaceDefinition '}'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: fail_underscore.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LibraryIntroducer 'library'
// CHECK:STDOUT: │ ├─LibraryName '"underscore"'
// CHECK:STDOUT: ├─LibraryDecl ';'
// CHECK:STDOUT: │ ╭─InterfaceIntroducer 'interface'
// CHECK:STDOUT: │ ├─IdentifierNameNotBeforeSignature 'I'
// CHECK:STDOUT: │ ╭─InterfaceDefinitionStart '{'
// CHECK:STDOUT: │ │ ╭─AssociatedConstantIntroducer 'let'
// CHECK:STDOUT: │ ├─AssociatedConstantDecl ';' has_error
// CHECK:STDOUT: ├─InterfaceDefinition '}'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
// CHECK:STDOUT: - filename: fail_missing_colon.carbon
// CHECK:STDOUT: ╭─FileStart ''
// CHECK:STDOUT: │ ╭─LibraryIntroducer 'library'
// CHECK:STDOUT: │ ├─LibraryName '"missing_colon"'
// CHECK:STDOUT: ├─LibraryDecl ';'
// CHECK:STDOUT: │ ╭─InterfaceIntroducer 'interface'
// CHECK:STDOUT: │ ├─IdentifierNameNotBeforeSignature 'I'
// CHECK:STDOUT: │ ╭─InterfaceDefinitionStart '{'
// CHECK:STDOUT: │ │ ╭─AssociatedConstantIntroducer 'let'
// CHECK:STDOUT: │ ├─AssociatedConstantDecl ';' has_error
// CHECK:STDOUT: ├─InterfaceDefinition '}'
// CHECK:STDOUT: ├─FileEnd ''
// CHECK:STDOUT: (root)
Reference in new issue View Git Blame Copy Permalink