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NativeModule.js
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122 lines (93 loc) · 2.76 KB
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const native = require('native');
const SandBox = require('SandBox');
// ##### hack by ngot ###############
var nSb = new SandBox({ native });
function runInThisContext(code, options) {
return nSb.addScript(options.filename, code);
}
// ##### hack by ngot ###############
function NativeModule(id) {
this.filename = `${id}.js`;
this.id = id;
this.exports = {};
this.loaded = false;
this.loading = false;
}
NativeModule._source = native.require('natives');
NativeModule._cache = {};
NativeModule.require = function(id) {
if (id === 'native_module') {
return NativeModule;
}
if (id === 'native') {
return native;
}
const cached = NativeModule.getCached(id);
if (cached && (cached.loaded || cached.loading)) {
return cached.exports;
}
if (!NativeModule.exists(id)) {
// Model the error off the internal/errors.js model, but
// do not use that module given that it could actually be
// the one causing the error if there's a bug in Node.js
const err = new Error(`No such built-in module: ${id}`);
err.code = 'ERR_UNKNOWN_BUILTIN_MODULE';
err.name = 'Error [ERR_UNKNOWN_BUILTIN_MODULE]';
throw err;
}
// process.moduleLoadList.push(`NativeModule ${id}`);
const nativeModule = new NativeModule(id);
nativeModule.cache();
nativeModule.compile();
return nativeModule.exports;
};
NativeModule.getCached = function(id) {
return NativeModule._cache[id];
};
NativeModule.exists = function(id) {
return NativeModule._source.hasOwnProperty(id);
};
const config = native.require('config');
if (config.exposeInternals) {
NativeModule.nonInternalExists = NativeModule.exists;
NativeModule.isInternal = function(id) {
return false;
};
} else {
NativeModule.nonInternalExists = function(id) {
return NativeModule.exists(id) && !NativeModule.isInternal(id);
};
NativeModule.isInternal = function(id) {
return id.startsWith('internal/');
};
}
NativeModule.getSource = function(id) {
return NativeModule._source[id];
};
NativeModule.wrap = function(script) {
return NativeModule.wrapper[0] + script + NativeModule.wrapper[1];
};
NativeModule.wrapper = [
'module.exports = (function (exports, require, module, __filename, __dirname) { ',
'\n});'
];
NativeModule.prototype.compile = function() {
var source = NativeModule.getSource(this.id);
source = NativeModule.wrap(source);
this.loading = true;
try {
const fn = runInThisContext(source, {
filename: this.filename,
lineOffset: 0,
displayErrors: true
});
fn(this.exports, NativeModule.require, this, this.filename);
this.loaded = true;
} finally {
this.loading = false;
}
};
NativeModule.prototype.cache = function() {
NativeModule._cache[this.id] = this;
};
module.exports = NativeModule;