mirror of https://github.com/lukechilds/node.git
Browse Source
This de-couples NativeModule from the module system and completes the main objective of this refactoring.v0.7.4-release
Felix Geisendörfer
14 years ago
committed by
Ryan Dahl
Ryan Dahl
3 changed files with 334 additions and 334 deletions
@ -0,0 +1,326 @@ |
|||
var NativeModule = require('native_module'); |
|||
var Script = process.binding('evals').Script; |
|||
var runInThisContext = Script.runInThisContext; |
|||
var runInNewContext = Script.runInNewContext; |
|||
|
|||
function Module(id, parent) { |
|||
this.id = id; |
|||
this.exports = {}; |
|||
this.parent = parent; |
|||
|
|||
this.filename = null; |
|||
this.loaded = false; |
|||
this.exited = false; |
|||
this.children = []; |
|||
}; |
|||
module.exports = Module; |
|||
|
|||
// Set the environ variable NODE_MODULE_CONTEXTS=1 to make node load all
|
|||
// modules in thier own context.
|
|||
Module._contextLoad = (+process.env['NODE_MODULE_CONTEXTS'] > 0); |
|||
Module._cache = {}; |
|||
Module._pathCache = {}; |
|||
Module._extensions = {}; |
|||
Module._paths = []; |
|||
|
|||
Module.wrapper = NativeModule.wrapper; |
|||
Module.wrap = NativeModule.wrap; |
|||
|
|||
var path = NativeModule.require('path'); |
|||
|
|||
Module._debug = function() {}; |
|||
if (process.env.NODE_DEBUG && /module/.test(process.env.NODE_DEBUG)) { |
|||
Module._debug = function(x) { |
|||
console.error(x); |
|||
}; |
|||
} |
|||
|
|||
// We use this alias for the preprocessor that filters it out
|
|||
var debug = Module._debug; |
|||
|
|||
// given a module name, and a list of paths to test, returns the first
|
|||
// matching file in the following precedence.
|
|||
//
|
|||
// require("a.<ext>")
|
|||
// -> a.<ext>
|
|||
//
|
|||
// require("a")
|
|||
// -> a
|
|||
// -> a.<ext>
|
|||
// -> a/index.<ext>
|
|||
Module._findPath = function(request, paths) { |
|||
var fs = NativeModule.require('fs'); |
|||
var exts = Object.keys(Module._extensions); |
|||
|
|||
if (request.charAt(0) === '/') { |
|||
paths = ['']; |
|||
} |
|||
|
|||
// check if the file exists and is not a directory
|
|||
function tryFile(requestPath) { |
|||
try { |
|||
var stats = fs.statSync(requestPath); |
|||
if (stats && !stats.isDirectory()) { |
|||
return fs.realpathSync(requestPath); |
|||
} |
|||
} catch (e) {} |
|||
return false; |
|||
}; |
|||
|
|||
// given a path check a the file exists with any of the set extensions
|
|||
function tryExtensions(p, extension) { |
|||
for (var i = 0, EL = exts.length; i < EL; i++) { |
|||
var filename = tryFile(p + exts[i]); |
|||
|
|||
if (filename) { |
|||
return filename; |
|||
} |
|||
} |
|||
return false; |
|||
}; |
|||
|
|||
var cacheKey = JSON.stringify({request: request, paths: paths}); |
|||
if (Module._pathCache[cacheKey]) { |
|||
return Module._pathCache[cacheKey]; |
|||
} |
|||
|
|||
// For each path
|
|||
for (var i = 0, PL = paths.length; i < PL; i++) { |
|||
var basePath = path.resolve(paths[i], request); |
|||
|
|||
// try to join the request to the path
|
|||
var filename = tryFile(basePath); |
|||
|
|||
if (!filename) { |
|||
// try it with each of the extensions
|
|||
filename = tryExtensions(basePath) |
|||
} |
|||
|
|||
if (!filename) { |
|||
// try it with each of the extensions at "index"
|
|||
filename = tryExtensions(path.resolve(basePath, 'index')) |
|||
} |
|||
|
|||
if (filename) { |
|||
Module._pathCache[cacheKey] = filename; |
|||
return filename; |
|||
} |
|||
} |
|||
return false; |
|||
} |
|||
|
|||
Module._resolveLookupPaths = function(request, parent) { |
|||
if (NativeModule.exists(request)) { |
|||
return [request, []]; |
|||
} |
|||
|
|||
var start = request.substring(0, 2); |
|||
if (start !== './' && start !== '..') { |
|||
return [request, Module._paths]; |
|||
} |
|||
|
|||
// with --eval, parent.id is not set and parent.filename is null
|
|||
if (!parent || !parent.id || !parent.filename) { |
|||
// make require('./path/to/foo') work - normally the path is taken
|
|||
// from realpath(__filename) but with eval there is no filename
|
|||
return [request, ['.'].concat(Module._paths)]; |
|||
} |
|||
|
|||
// Is the parent an index module?
|
|||
// We can assume the parent has a valid extension,
|
|||
// as it already has been accepted as a module.
|
|||
var isIndex = /^index\.\w+?$/.test(path.basename(parent.filename)); |
|||
var parentIdPath = isIndex ? parent.id : path.dirname(parent.id); |
|||
var id = path.resolve(parentIdPath, request); |
|||
|
|||
// make sure require('./path') and require('path') get distinct ids, even
|
|||
// when called from the toplevel js file
|
|||
if (parentIdPath === '.' && id.indexOf('/') === -1) { |
|||
id = './' + id; |
|||
} |
|||
|
|||
debug('RELATIVE: requested:' + request + |
|||
' set ID to: ' + id + ' from ' + parent.id); |
|||
|
|||
return [id, [path.dirname(parent.filename)]]; |
|||
} |
|||
|
|||
|
|||
Module._load = function(request, parent) { |
|||
debug('Module._load REQUEST ' + (request) + |
|||
' parent: ' + parent.id); |
|||
|
|||
var resolved = Module._resolveFilename(request, parent); |
|||
var id = resolved[0]; |
|||
var filename = resolved[1]; |
|||
|
|||
var cachedModule = Module._cache[filename]; |
|||
if (cachedModule) { |
|||
return cachedModule.exports; |
|||
} |
|||
|
|||
if (NativeModule.exists(id)) { |
|||
// REPL is a special case, because it needs the real require.
|
|||
if (id == 'repl') { |
|||
var replModule = new Module('repl'); |
|||
replModule._compile(NativeModule.getSource('repl'), 'repl.js'); |
|||
NativeModule._cache.repl = replModule; |
|||
return replModule.exports; |
|||
} |
|||
|
|||
debug('load native module ' + request); |
|||
return NativeModule.require(id); |
|||
} |
|||
|
|||
var module = new Module(id, parent); |
|||
Module._cache[filename] = module; |
|||
module.load(filename); |
|||
return module.exports; |
|||
}; |
|||
|
|||
Module._resolveFilename = function(request, parent) { |
|||
if (NativeModule.exists(request)) { |
|||
return [request, request]; |
|||
} |
|||
|
|||
var resolvedModule = Module._resolveLookupPaths(request, parent); |
|||
var id = resolvedModule[0]; |
|||
var paths = resolvedModule[1]; |
|||
|
|||
// look up the filename first, since that's the cache key.
|
|||
debug('looking for ' + JSON.stringify(id) + |
|||
' in ' + JSON.stringify(paths)); |
|||
|
|||
var filename = Module._findPath(request, paths); |
|||
if (!filename) { |
|||
throw new Error("Cannot find module '" + request + "'"); |
|||
} |
|||
id = filename; |
|||
return [id, filename]; |
|||
} |
|||
|
|||
|
|||
Module.prototype.load = function(filename) { |
|||
debug('load ' + JSON.stringify(filename) + |
|||
' for module ' + JSON.stringify(this.id)); |
|||
|
|||
process.assert(!this.loaded); |
|||
this.filename = filename; |
|||
|
|||
var extension = path.extname(filename) || '.js'; |
|||
if (!Module._extensions[extension]) extension = '.js'; |
|||
Module._extensions[extension](this, filename); |
|||
this.loaded = true; |
|||
}; |
|||
|
|||
|
|||
// Returns exception if any
|
|||
Module.prototype._compile = function(content, filename) { |
|||
var self = this; |
|||
// remove shebang
|
|||
content = content.replace(/^\#\!.*/, ''); |
|||
|
|||
function require(path) { |
|||
return Module._load(path, self); |
|||
} |
|||
|
|||
require.resolve = function(request) { |
|||
return Module._resolveFilename(request, self)[1]; |
|||
} |
|||
require.paths = Module._paths; |
|||
require.main = process.mainModule; |
|||
// Enable support to add extra extension types
|
|||
require.extensions = Module._extensions; |
|||
require.registerExtension = function() { |
|||
throw new Error('require.registerExtension() removed. Use '+ |
|||
'require.extensions instead.'); |
|||
} |
|||
require.cache = Module._cache; |
|||
|
|||
var dirname = path.dirname(filename); |
|||
|
|||
if (Module._contextLoad) { |
|||
if (self.id !== '.') { |
|||
debug('load submodule'); |
|||
// not root module
|
|||
var sandbox = {}; |
|||
for (var k in global) { |
|||
sandbox[k] = global[k]; |
|||
} |
|||
sandbox.require = require; |
|||
sandbox.exports = self.exports; |
|||
sandbox.__filename = filename; |
|||
sandbox.__dirname = dirname; |
|||
sandbox.module = self; |
|||
sandbox.global = sandbox; |
|||
sandbox.root = root; |
|||
|
|||
return runInNewContext(content, sandbox, filename, true); |
|||
} |
|||
|
|||
debug('load root module'); |
|||
// root module
|
|||
global.require = require; |
|||
global.exports = self.exports; |
|||
global.__filename = filename; |
|||
global.__dirname = dirname; |
|||
global.module = self; |
|||
|
|||
return runInThisContext(content, filename, true); |
|||
} |
|||
|
|||
// create wrapper function
|
|||
var wrapper = Module.wrap(content); |
|||
|
|||
var compiledWrapper = runInThisContext(wrapper, filename, true); |
|||
if (filename === process.argv[1] && global.v8debug) { |
|||
global.v8debug.Debug.setBreakPoint(compiledWrapper, 0, 0); |
|||
} |
|||
var args = [self.exports, require, self, filename, dirname]; |
|||
return compiledWrapper.apply(self.exports, args); |
|||
}; |
|||
|
|||
// Native extension for .js
|
|||
Module._extensions['.js'] = function(module, filename) { |
|||
var content = NativeModule.require('fs').readFileSync(filename, 'utf8'); |
|||
module._compile(content, filename); |
|||
}; |
|||
|
|||
|
|||
// Native extension for .node
|
|||
Module._extensions['.node'] = function(module, filename) { |
|||
process.dlopen(filename, module.exports); |
|||
}; |
|||
|
|||
|
|||
// bootstrap main module.
|
|||
Module.runMain = function() { |
|||
// Load the main module--the command line argument.
|
|||
process.mainModule = new Module('.'); |
|||
process.mainModule.load(process.argv[1]); |
|||
}; |
|||
|
|||
Module._initPaths = function() { |
|||
var paths = [path.resolve(process.execPath, '..', '..', 'lib', 'node')]; |
|||
|
|||
if (process.env['HOME']) { |
|||
paths.unshift(path.resolve(process.env['HOME'], '.node_libraries')); |
|||
paths.unshift(path.resolve(process.env['HOME'], '.node_modules')); |
|||
} |
|||
|
|||
if (process.env['NODE_PATH']) { |
|||
paths = process.env['NODE_PATH'].split(':').concat(paths); |
|||
} |
|||
|
|||
Module._paths = paths; |
|||
}; |
|||
|
|||
// bootstrap repl
|
|||
Module.requireRepl = function() { |
|||
return Module._load('repl', '.'); |
|||
}; |
|||
|
|||
Module._initPaths(); |
|||
|
|||
// backwards compatibility
|
|||
Module.Module = Module; |
|||
Loading…
Reference in new issue