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https://github.com/carbon-language/carbon-lang.git
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Chandler CarruthandDana Jansens
37949a2066
The images beside the samples were screenshots taken by hand, so they drifted: they still showed `package Carbon api;`, syntax the language dropped in 2024. `render_sample.py` renders a sample the way the grammar in this repository actually highlights it, using `tmlanguage.py`, a small TextMate tokenizer. VS Code runs grammars under Oniguruma, which we cannot depend on here, but this grammar uses no Oniguruma-only syntax, so `re` runs its regexes unchanged and the two agree on every character of every Carbon file in the repository. The output is SVG, so regenerating needs nothing but Python, and a later grammar change gets a same-path image diff showing what it did to real code. The samples change where a construct left the language (`api`, `Carbon` as the package name, `StringView`, `destructor`), refresh the `keywords.carbon` inventory against `token_kind.def`, and add sections for octal, raw and block literals, character literals, lambdas, and raw identifiers. `interop.carbon` is new, covering inline C++. These are highlighting fixtures rather than programs, so the deliberately invalid lines stay. Assisted-by: Claude Code --------- Co-authored-by: Dana Jansens <danakj@orodu.net>
30 lines
830 B
Plaintext
30 lines
830 B
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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// Inline C++ is scoped `meta.embedded.block.cpp`, so an editor that has a C++
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// grammar highlights them as C++; these renderings come from the Carbon grammar
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// alone, so that content shows plain.
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package Sample library "interop";
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import Cpp library "<cstdio>";
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import Cpp library "<string_view>";
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import Cpp inline '''c++
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int FromImport() { return 1; }
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''';
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import Cpp inline "int OneLiner() { return 2; }";
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inline Cpp '''
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int FromBlock() { return 3; }
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''';
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fn Uses() {
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var value: Cpp.int = 1 as Cpp.int;
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var widened: Cpp.size_t = value as Cpp.size_t;
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var back: i32 = value unsafe as i32;
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Cpp.printf("%d\n", value);
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}
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