93 lines
2.9 KiB
JavaScript
93 lines
2.9 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Module dependencies.
|
||
|
|
*/
|
||
|
|
|
||
|
|
const ref = require('ref-napi');
|
||
|
|
const assert = require('assert');
|
||
|
|
const debug = require('debug')('ffi:ffi');
|
||
|
|
const Struct = require('ref-struct-di')(ref);
|
||
|
|
const bindings = require('./bindings');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Export some of the properties from the "bindings" file.
|
||
|
|
*/
|
||
|
|
|
||
|
|
['FFI_TYPES',
|
||
|
|
'FFI_OK', 'FFI_BAD_TYPEDEF', 'FFI_BAD_ABI',
|
||
|
|
'FFI_DEFAULT_ABI', 'FFI_FIRST_ABI', 'FFI_LAST_ABI', 'FFI_SYSV', 'FFI_UNIX64',
|
||
|
|
'FFI_WIN64', 'FFI_VFP', 'FFI_STDCALL', 'FFI_THISCALL', 'FFI_FASTCALL',
|
||
|
|
'RTLD_LAZY', 'RTLD_NOW', 'RTLD_LOCAL', 'RTLD_GLOBAL', 'RTLD_NOLOAD',
|
||
|
|
'RTLD_NODELETE', 'RTLD_FIRST', 'RTLD_NEXT', 'RTLD_DEFAULT', 'RTLD_SELF',
|
||
|
|
'RTLD_MAIN_ONLY', 'FFI_MS_CDECL'].forEach(prop => {
|
||
|
|
if (!bindings.hasOwnProperty(prop)) {
|
||
|
|
return debug('skipping exporting of non-existant property', prop);
|
||
|
|
}
|
||
|
|
const desc = Object.getOwnPropertyDescriptor(bindings, prop);
|
||
|
|
Object.defineProperty(exports, prop, desc);
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the `ffi_type` property on the built-in types.
|
||
|
|
*/
|
||
|
|
|
||
|
|
Object.keys(bindings.FFI_TYPES).forEach(name => {
|
||
|
|
const type = bindings.FFI_TYPES[name];
|
||
|
|
type.name = name;
|
||
|
|
if (name === 'pointer')
|
||
|
|
return; // there is no "pointer" type...
|
||
|
|
ref.types[name].ffi_type = type;
|
||
|
|
});
|
||
|
|
|
||
|
|
// make `size_t` use the "ffi_type_pointer"
|
||
|
|
ref.types.size_t.ffi_type = bindings.FFI_TYPES.pointer;
|
||
|
|
|
||
|
|
// make `Utf8String` use "ffi_type_pointer"
|
||
|
|
const CString = ref.types.CString || ref.types.Utf8String;
|
||
|
|
CString.ffi_type = bindings.FFI_TYPES.pointer;
|
||
|
|
|
||
|
|
// make `Object` use the "ffi_type_pointer"
|
||
|
|
ref.types.Object.ffi_type = bindings.FFI_TYPES.pointer;
|
||
|
|
|
||
|
|
// libffi is weird when it comes to long data types (defaults to 64-bit),
|
||
|
|
// so we emulate here, since some platforms have 32-bit longs and some
|
||
|
|
// platforms have 64-bit longs.
|
||
|
|
switch (ref.sizeof.long) {
|
||
|
|
case 4:
|
||
|
|
ref.types.ulong.ffi_type = bindings.FFI_TYPES.uint32;
|
||
|
|
ref.types.long.ffi_type = bindings.FFI_TYPES.int32;
|
||
|
|
break;
|
||
|
|
case 8:
|
||
|
|
ref.types.ulong.ffi_type = bindings.FFI_TYPES.uint64;
|
||
|
|
ref.types.long.ffi_type = bindings.FFI_TYPES.int64;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
throw new Error('unsupported "long" size: ' + ref.sizeof.long);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Alias the "ref" types onto ffi's exports, for convenience...
|
||
|
|
*/
|
||
|
|
|
||
|
|
exports.types = ref.types;
|
||
|
|
|
||
|
|
// Include our other modules
|
||
|
|
exports.version = bindings.version;
|
||
|
|
exports.CIF = require('./cif');
|
||
|
|
exports.CIF_var = require('./cif_var');
|
||
|
|
exports.Function = require('./function');
|
||
|
|
exports.ForeignFunction = require('./foreign_function');
|
||
|
|
exports.VariadicForeignFunction = require('./foreign_function_var');
|
||
|
|
exports.DynamicLibrary = require('./dynamic_library');
|
||
|
|
exports.Library = require('./library');
|
||
|
|
exports.Callback = require('./callback');
|
||
|
|
exports.errno = require('./errno');
|
||
|
|
exports.ffiType = require('./type');
|
||
|
|
|
||
|
|
// the shared library extension for this platform
|
||
|
|
exports.LIB_EXT = exports.Library.EXT;
|
||
|
|
|
||
|
|
// the FFI_TYPE struct definition
|
||
|
|
exports.FFI_TYPE = exports.ffiType.FFI_TYPE;
|