89 lines
2.8 KiB
JavaScript
89 lines
2.8 KiB
JavaScript
module.exports = SystemFormatter;
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var DefaultFormatter = require("./_default");
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var AMDFormatter = require("./amd");
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var traverse = require("../../traverse");
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var util = require("../../util");
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var t = require("../../types");
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var _ = require("lodash");
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var SETTER_MODULE_NAMESPACE = t.identifier("m");
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var PRIVATE_MODULE_NAME_IDENTIFIER = t.identifier("__moduleName");
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var NULL_SETTER = t.literal(null);
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function SystemFormatter(file) {
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AMDFormatter.apply(this, arguments);
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this.moduleNameLiteral = t.literal(this.getModuleName());
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this.exportIdentifier = file.generateUidIdentifier("export");
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}
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util.inherits(SystemFormatter, AMDFormatter);
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SystemFormatter.prototype.getModuleName = DefaultFormatter.prototype.getModuleName;
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SystemFormatter.prototype._exportsWildcard = function (objectIdentifier) {
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var leftIdentifier = t.identifier("i");
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var valIdentifier = t.memberExpression(objectIdentifier, leftIdentifier, true);
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var left = t.variableDeclaration("var", [
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t.variableDeclarator(leftIdentifier)
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]);
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var right = objectIdentifier;
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var block = t.blockStatement([
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this._makeExportStatements([leftIdentifier, valIdentifier])
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]);
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return t.forInStatement(left, right, block);
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};
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SystemFormatter.prototype._exportsAssign = function (id, init, isExpression) {
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return this.buildExportCall(id.name, init, true);
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};
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SystemFormatter.prototype.remapExportAssignment = function (node) {
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return this.buildExportCall(node.left.name, node);
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};
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SystemFormatter.prototype.buildExportCall = function (id, init, isStatement) {
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var call = t.callExpression(this.exportIdentifier, [t.literal(id), init]);
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if (isStatement) {
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return t.expressionStatement(call);
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} else {
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return call;
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}
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};
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SystemFormatter.prototype.buildRunnerSetters = function () {
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return t.arrayExpression(_.map(this.ids, function (uid) {
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var moduleIdentifier = t.identifier("m");
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return t.functionExpression(null, [moduleIdentifier], t.blockStatement([
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t.assignmentExpression("=", uid, moduleIdentifier)
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]));
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}));
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};
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SystemFormatter.prototype.transform = function (ast) {
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var program = ast.program;
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var runner = util.template("system", {
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MODULE_NAME: this.moduleNameLiteral,
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MODULE_DEPENDENCIES: t.arrayExpression(this.buildDependencyLiterals()),
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EXPORT_IDENTIFIER: this.exportIdentifier,
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SETTERS: this.buildRunnerSetters(),
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EXECUTE: t.functionExpression(null, [], t.blockStatement(program.body))
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}, true);
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if (!_.isEmpty(this.ids)) {
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var handlerBody = runner.expression.arguments[2].body.body;
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handlerBody.unshift(t.variableDeclaration("var", _.map(this.ids, function (uid) {
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return t.variableDeclarator(uid);
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})));
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}
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program.body = [runner];
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};
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