angular2
Version:
Angular 2 - a web framework for modern web apps
72 lines • 11.8 kB
JavaScript
'use strict';"use strict";
var lang_1 = require('angular2/src/facade/lang');
var exceptions_1 = require('angular2/src/facade/exceptions');
var o = require('../output/output_ast');
var identifiers_1 = require('../identifiers');
var util_1 = require('./util');
var _PurePipeProxy = (function () {
function _PurePipeProxy(instance, argCount) {
this.instance = instance;
this.argCount = argCount;
}
return _PurePipeProxy;
}());
var CompilePipe = (function () {
function CompilePipe(view, name) {
this.view = view;
this._purePipeProxies = [];
this.meta = _findPipeMeta(view, name);
this.instance = o.THIS_EXPR.prop("_pipe_" + name + "_" + view.pipeCount++);
}
Object.defineProperty(CompilePipe.prototype, "pure", {
get: function () { return this.meta.pure; },
enumerable: true,
configurable: true
});
CompilePipe.prototype.create = function () {
var _this = this;
var deps = this.meta.type.diDeps.map(function (diDep) {
if (diDep.token.equalsTo(identifiers_1.identifierToken(identifiers_1.Identifiers.ChangeDetectorRef))) {
return o.THIS_EXPR.prop('ref');
}
return util_1.injectFromViewParentInjector(diDep.token, false);
});
this.view.fields.push(new o.ClassField(this.instance.name, o.importType(this.meta.type), [o.StmtModifier.Private]));
this.view.createMethod.resetDebugInfo(null, null);
this.view.createMethod.addStmt(o.THIS_EXPR.prop(this.instance.name)
.set(o.importExpr(this.meta.type).instantiate(deps))
.toStmt());
this._purePipeProxies.forEach(function (purePipeProxy) {
util_1.createPureProxy(_this.instance.prop('transform').callMethod(o.BuiltinMethod.bind, [_this.instance]), purePipeProxy.argCount, purePipeProxy.instance, _this.view);
});
};
CompilePipe.prototype.call = function (callingView, args) {
if (this.meta.pure) {
var purePipeProxy = new _PurePipeProxy(o.THIS_EXPR.prop(this.instance.name + "_" + this._purePipeProxies.length), args.length);
this._purePipeProxies.push(purePipeProxy);
return util_1.getPropertyInView(o.importExpr(identifiers_1.Identifiers.castByValue)
.callFn([purePipeProxy.instance, this.instance.prop('transform')]), callingView, this.view)
.callFn(args);
}
else {
return util_1.getPropertyInView(this.instance, callingView, this.view).callMethod('transform', args);
}
};
return CompilePipe;
}());
exports.CompilePipe = CompilePipe;
function _findPipeMeta(view, name) {
var pipeMeta = null;
for (var i = view.pipeMetas.length - 1; i >= 0; i--) {
var localPipeMeta = view.pipeMetas[i];
if (localPipeMeta.name == name) {
pipeMeta = localPipeMeta;
break;
}
}
if (lang_1.isBlank(pipeMeta)) {
throw new exceptions_1.BaseException("Illegal state: Could not find pipe " + name + " although the parser should have detected this error!");
}
return pipeMeta;
}
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}\n\n  create(): void {\n    var deps = this.meta.type.diDeps.map((diDep) => {\n      if (diDep.token.equalsTo(identifierToken(Identifiers.ChangeDetectorRef))) {\n        return o.THIS_EXPR.prop('ref');\n      }\n      return injectFromViewParentInjector(diDep.token, false);\n    });\n    this.view.fields.push(new o.ClassField(this.instance.name, o.importType(this.meta.type),\n                                           [o.StmtModifier.Private]));\n    this.view.createMethod.resetDebugInfo(null, null);\n    this.view.createMethod.addStmt(o.THIS_EXPR.prop(this.instance.name)\n                                       .set(o.importExpr(this.meta.type).instantiate(deps))\n                                       .toStmt());\n    this._purePipeProxies.forEach((purePipeProxy) => {\n      createPureProxy(\n          this.instance.prop('transform').callMethod(o.BuiltinMethod.bind, [this.instance]),\n          purePipeProxy.argCount, purePipeProxy.instance, this.view);\n    });\n  }\n\n  call(callingView: CompileView, args: o.Expression[]): o.Expression {\n    if (this.meta.pure) {\n      var purePipeProxy = new _PurePipeProxy(\n          o.THIS_EXPR.prop(`${this.instance.name}_${this._purePipeProxies.length}`), args.length);\n      this._purePipeProxies.push(purePipeProxy);\n      return getPropertyInView(\n                 o.importExpr(Identifiers.castByValue)\n                     .callFn([purePipeProxy.instance, this.instance.prop('transform')]),\n                 callingView, this.view)\n          .callFn(args);\n    } else {\n      return getPropertyInView(this.instance, callingView, this.view).callMethod('transform', args);\n    }\n  }\n}\n\n\nfunction _findPipeMeta(view: CompileView, name: string): CompilePipeMetadata {\n  var pipeMeta: CompilePipeMetadata = null;\n  for (var i = view.pipeMetas.length - 1; i >= 0; i--) {\n    var localPipeMeta = view.pipeMetas[i];\n    if (localPipeMeta.name == name) {\n      pipeMeta = localPipeMeta;\n      break;\n    }\n  }\n  if (isBlank(pipeMeta)) {\n    throw new BaseException(\n        `Illegal state: Could not find pipe ${name} although the parser should have detected this error!`);\n  }\n  return pipeMeta;\n}\n"]}