mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 21:20:11 +01:00
Boaz Brickner
4d4d720ff0
This defines `Cpp.void` as a custom type.
`Cpp.void*` is mapped to C++ `void*`.
Not supported yet: Conversions from and to other pointer types.
C++ Interop Demo:
```carbon
// main.carbon
library "Main";
import Core library "io";
import Cpp inline '''
#include <cstdio>
auto GetPointer() -> void* _Nonnull {
static int x = 8;
return &x;
}
auto GetValue(void* _Nonnull ptr) -> int {
return *static_cast<int*>(ptr);
}
''';
fn Run() -> i32 {
let ptr: Cpp.void* = Cpp.GetPointer();
Core.Print(Cpp.GetValue(ptr));
return 0;
}
```
```shell
$ bazel-bin/toolchain/carbon compile main.carbon
$ bazel-bin/toolchain/carbon link main.o --output=demo
$ ./demo
8
```
Part of #6280.
81 lines
3.8 KiB
Plaintext
81 lines
3.8 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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// This is checking that the stdin filename is handled consistently across
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// dump flags.
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// TODO: Align lex/parse with check/lower.
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//
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// ARGS: compile - --phase=lower --no-prelude-import --target=x86_64-linux-gnu --dump-tokens --dump-parse-tree --dump-sem-ir --dump-raw-sem-ir --dump-llvm-ir
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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/driver/testdata/stdin.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/driver/testdata/stdin.carbon
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// CHECK:STDOUT: - filename: <stdin>
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// CHECK:STDOUT: tokens:
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// CHECK:STDOUT: - { index: 0, kind: "FileStart", line: 1, column: 1, indent: 1, spelling: "" }
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// CHECK:STDOUT: - { index: 1, kind: "FileEnd", line: 1, column: 1, indent: 1, spelling: "", has_leading_space: true }
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// CHECK:STDOUT: - filename: <stdin>
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// CHECK:STDOUT: parse_tree: [
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// CHECK:STDOUT: {kind: 'FileStart', text: ''},
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// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
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// CHECK:STDOUT: ]
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// CHECK:STDOUT: ---
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// CHECK:STDOUT: filename: '-'
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// CHECK:STDOUT: sem_ir:
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// CHECK:STDOUT: import_irs:
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// CHECK:STDOUT: 'import_ir(ApiForImpl)': {decl_id: inst<none>, is_export: false}
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// CHECK:STDOUT: 'import_ir(Cpp)': {decl_id: inst<none>, is_export: false}
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// CHECK:STDOUT: import_ir_insts: {}
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// CHECK:STDOUT: clang_decls: {}
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// CHECK:STDOUT: name_scopes:
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// CHECK:STDOUT: name_scope00000000: {inst: inst0000000F, parent_scope: name_scope<none>, has_error: false, extended_scopes: [], names: {}}
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// CHECK:STDOUT: entity_names: {}
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// CHECK:STDOUT: cpp_global_vars: {}
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// CHECK:STDOUT: functions: {}
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// CHECK:STDOUT: classes: {}
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// CHECK:STDOUT: generics: {}
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// CHECK:STDOUT: specifics: {}
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// CHECK:STDOUT: struct_type_fields:
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// CHECK:STDOUT: struct_type_fields00000000: {}
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// CHECK:STDOUT: types:
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// CHECK:STDOUT: 'type(TypeType)':
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// CHECK:STDOUT: value_repr: {kind: copy, type: type(TypeType)}
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// CHECK:STDOUT: 'type(Error)':
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// CHECK:STDOUT: value_repr: {kind: copy, type: type(Error)}
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// CHECK:STDOUT: 'type(inst(NamespaceType))':
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// CHECK:STDOUT: value_repr: {kind: copy, type: type(inst(NamespaceType))}
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// CHECK:STDOUT: insts:
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// CHECK:STDOUT: inst0000000F: {kind: Namespace, arg0: name_scope00000000, arg1: inst<none>, type: type(inst(NamespaceType))}
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// CHECK:STDOUT: constant_values:
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// CHECK:STDOUT: values:
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// CHECK:STDOUT: inst0000000F: concrete_constant(inst0000000F)
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// CHECK:STDOUT: symbolic_constants: {}
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// CHECK:STDOUT: inst_blocks:
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// CHECK:STDOUT: inst_block_empty: {}
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// CHECK:STDOUT: exports: {}
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// CHECK:STDOUT: imports: {}
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// CHECK:STDOUT: global_init: {}
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// CHECK:STDOUT: inst_block60000004:
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// CHECK:STDOUT: 0: inst0000000F
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// CHECK:STDOUT: ...
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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: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; ModuleID = '-'
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// CHECK:STDOUT: source_filename = "-"
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// CHECK:STDOUT:
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// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
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// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
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// CHECK:STDOUT:
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// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
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// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
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// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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// CHECK:STDOUT: !3 = !DIFile(filename: "-", directory: "")
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