fluencelabs/wasmer
1
0
Fork 0
mirror of https://github.com/fluencelabs/wasmer synced 2025-07-31 07:12:10 +00:00
Code Issues Projects Releases Wiki Activity

Merge #1123

Browse Source 
1123: feat(runtime-c-api) Define the `DEPRECATED` C macro. r=Hywan a=Hywan

This PR defines a cross-compiler `DEPRECATED(message)` macro. It must
be used as follows in Rust:

```rust
/// This is a documentation.
/// cbindgen:prefix=DEPRECATED("This is a deprecation message.")
pub extern "C" fn wasmer_foo() -> c_uint {
    42
}
```

It will generate the following C header:

```c
/**
 * This is a documentation.
 */
DEPRECATED("This is a deprecation message.")
unsigned int wasmer_foo();
```

And once this code is used by a C compiler, it will print something
like this (example from Clang):

```
…/test.c:…:…: error: 'wasmer_foo' is deprecated: This is a deprecation message. [-Werror,-Wdeprecated-declarations]
    unsigned int x = wasmer_foo();
                     ^
…/wasmer.h:…:…: note: 'wasmer_foo' has been explicitly marked deprecated here
DEPRECATED("This is a deprecation message.")
^
…/wasmer.h:…:…: note: expanded from macro 'DEPRECATED'
```

This is required for further deprecations.

(cf https://github.com/eqrion/cbindgen/issues/408)

Co-authored-by: Ivan Enderlin <ivan.enderlin@hoa-project.net>
Co-authored-by: Ivan Enderlin <ivan.enderlin@wanadoo.fr>
This commit is contained in:
bors[bot]
2020-01-09 13:11:52 +00:00
committed by GitHub
parent 8e6015f231 49401b7a9d
commit 6370fd7b81
3 changed files with 61 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
lib/runtime-c-api/build.rs
View File

@@ -14,18 +14,31 @@ fn main() {
let mut pre_header = r#"
#if !defined(WASMER_H_MACROS)
#define WASMER_H_MACROS
#if defined(MSVC)
#if defined(_M_AMD64)
#define ARCH_X86_64
#endif
// Define the `ARCH_X86_X64` constant.
#if defined(MSVC) && defined(_M_AMD64)
# define ARCH_X86_64
#elif (defined(GCC) || defined(__GNUC__) || defined(__clang__)) && defined(__x86_64__)
# define ARCH_X86_64
#endif
#if defined(GCC) || defined(__GNUC__) || defined(__clang__)
#if defined(__x86_64__)
#define ARCH_X86_64
// Compatibility with non-Clang compilers.
#if !defined(__has_attribute)
# define __has_attribute(x) 0
#endif
// Compatibility with non-Clang compilers.
#if !defined(__has_declspec_attribute)
# define __has_declspec_attribute(x) 0
#endif
// Define the `DEPRECATED` macro.
#if defined(GCC) || defined(__GNUC__) || __has_attribute(deprecated)
# define DEPRECATED(message) __attribute__((deprecated(message)))
#elif defined(MSVC) || __has_declspec_attribute(deprecated)
# define DEPRECATED(message) __declspec(deprecated(message))
#endif
"#
@@ -41,7 +54,7 @@ fn main() {
pre_header += "#define WASMER_EMSCRIPTEN_ENABLED\n";
}
// close pre header
// Close pre header.
pre_header += "#endif // WASMER_H_MACROS\n";
// Generate the C bindings in the `OUT_DIR`.

27
lib/runtime-c-api/wasmer.h
View File

@@ -1,17 +1,30 @@
#if !defined(WASMER_H_MACROS)
#define WASMER_H_MACROS
#if defined(MSVC)
#if defined(_M_AMD64)
#define ARCH_X86_64
#endif
// Define the `ARCH_X86_X64` constant.
#if defined(MSVC) && defined(_M_AMD64)
# define ARCH_X86_64
#elif (defined(GCC) || defined(__GNUC__) || defined(__clang__)) && defined(__x86_64__)
# define ARCH_X86_64
#endif
#if defined(GCC) || defined(__GNUC__) || defined(__clang__)
#if defined(__x86_64__)
#define ARCH_X86_64
// Compatibility with non-Clang compilers.
#if !defined(__has_attribute)
# define __has_attribute(x) 0
#endif
// Compatibility with non-Clang compilers.
#if !defined(__has_declspec_attribute)
# define __has_declspec_attribute(x) 0
#endif
// Define the `DEPRECATED` macro.
#if defined(GCC) || defined(__GNUC__) || __has_attribute(deprecated)
# define DEPRECATED(message) __attribute__((deprecated(message)))
#elif defined(MSVC) || __has_declspec_attribute(deprecated)
# define DEPRECATED(message) __declspec(deprecated(message))
#endif
#define WASMER_WASI_ENABLED

27
lib/runtime-c-api/wasmer.hh
View File

@@ -1,17 +1,30 @@
#if !defined(WASMER_H_MACROS)
#define WASMER_H_MACROS
#if defined(MSVC)
#if defined(_M_AMD64)
#define ARCH_X86_64
#endif
// Define the `ARCH_X86_X64` constant.
#if defined(MSVC) && defined(_M_AMD64)
# define ARCH_X86_64
#elif (defined(GCC) || defined(__GNUC__) || defined(__clang__)) && defined(__x86_64__)
# define ARCH_X86_64
#endif
#if defined(GCC) || defined(__GNUC__) || defined(__clang__)
#if defined(__x86_64__)
#define ARCH_X86_64
// Compatibility with non-Clang compilers.
#if !defined(__has_attribute)
# define __has_attribute(x) 0
#endif
// Compatibility with non-Clang compilers.
#if !defined(__has_declspec_attribute)
# define __has_declspec_attribute(x) 0
#endif
// Define the `DEPRECATED` macro.
#if defined(GCC) || defined(__GNUC__) || __has_attribute(deprecated)
# define DEPRECATED(message) __attribute__((deprecated(message)))
#elif defined(MSVC) || __has_declspec_attribute(deprecated)
# define DEPRECATED(message) __declspec(deprecated(message))
#endif
#define WASMER_WASI_ENABLED