/*

MIT License http://www.opensource.org/licenses/mit-license.php

Author Tobias Koppers @sokra

*/

var ModuleParserHelpers = require("./ModuleParserHelpers");

var ConstDependency = require("./dependencies/ConstDependency");

var NullFactory = require("./NullFactory");

function ProvidePlugin(definitions) {

this.definitions = definitions;

}

module.exports = ProvidePlugin;

ProvidePlugin.prototype.apply = function(compiler) {

compiler.plugin("compilation", function(compilation) {

compilation.dependencyFactories.set(ConstDependency, new NullFactory());

compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());

});

Object.keys(this.definitions).forEach(function(name) {

var request = this.definitions[name];

var splittedName = name.split(".");

if(splittedName.length > 0) {

splittedName.slice(1).forEach(function(_, i) {

var name = splittedName.slice(0, i + 1).join(".");

compiler.parser.plugin("can-rename " + name, function() {

return true;

});

});

}

compiler.parser.plugin("expression " + name, function(expr) {

var nameIdentifier = name;

var scopedName = name.indexOf(".") >= 0;

if(scopedName) {

nameIdentifier = "__webpack_provided_" + name.replace(/\./g, "_dot_");

}

if(!ModuleParserHelpers.addParsedVariable(this, nameIdentifier, "require(" + JSON.stringify(request) + ")")) {

return false;

}

if(scopedName) {

nameIdentifier = "__webpack_provided_" + name.replace(/\./g, "_dot_");

var dep = new ConstDependency(nameIdentifier, expr.range);

dep.loc = expr.loc;

this.state.current.addDependency(dep);

}

return true;

});

}, this);

};