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https://github.com/carbon-language/carbon-lang.git
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Boaz Brickner
321891cd8e
Based on #5920. Added commented out better examples and clarified what is missing to support them. Added `tags` support to `carbon_binary` (based on #5967) to set the `BUILD` rule to manual until we can find `cstdio` in macos. ```shell $ bazel run examples/interop/cpp:hello_world ... Hello world! ```
34 lines
1.0 KiB
Plaintext
34 lines
1.0 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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import Cpp inline "#include <cstdio>";
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fn Run() {
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// TODO: Requires operator <<, declaration type Var (cout) and class with
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// virtual bases (basic_ostream).
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// Cpp.std.cout << "Hello world!\n";
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// TODO: Requires variadic function.
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// Cpp.printf("Hello world!\n");
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// TODO: Requires nullable pointer.
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// Cpp.puts("Hello world!\n");
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// TODO: Requires nullable void pointer.
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// Cpp.write(1, "Hello world!\n", 13);
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// TODO: Requires Core.String API.
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// let message: str = "Hello world!\n\n";
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// for (c: Core.Char in msg) {
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// Cpp.putchar((c as u8) as i32);
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// }
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let message: array(Core.Char, 13) =
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('H', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd', '!', '\n');
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for (c: Core.Char in message) {
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// TODO: u8 should probably have an implicit cast to i32.
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Cpp.putchar((c as u8) as i32);
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}
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}
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