@angular/compiler
Version:
Angular - the compiler library
60 lines • 10.2 kB
JavaScript
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import * as tslib_1 from "tslib";
import * as o from '../output/output_ast';
import { jitStatements } from '../output/output_jit';
/**
* Implementation of `CompileReflector` which resolves references to @angular/core
* symbols at runtime, according to a consumer-provided mapping.
*
* Only supports `resolveExternalReference`, all other methods throw.
*/
var R3JitReflector = /** @class */ (function () {
function R3JitReflector(context) {
this.context = context;
}
R3JitReflector.prototype.resolveExternalReference = function (ref) {
// This reflector only handles @angular/core imports.
if (ref.moduleName !== '@angular/core') {
throw new Error("Cannot resolve external reference to " + ref.moduleName + ", only references to @angular/core are supported.");
}
if (!this.context.hasOwnProperty(ref.name)) {
throw new Error("No value provided for @angular/core symbol '" + ref.name + "'.");
}
return this.context[ref.name];
};
R3JitReflector.prototype.parameters = function (typeOrFunc) { throw new Error('Not implemented.'); };
R3JitReflector.prototype.annotations = function (typeOrFunc) { throw new Error('Not implemented.'); };
R3JitReflector.prototype.shallowAnnotations = function (typeOrFunc) { throw new Error('Not implemented.'); };
R3JitReflector.prototype.tryAnnotations = function (typeOrFunc) { throw new Error('Not implemented.'); };
R3JitReflector.prototype.propMetadata = function (typeOrFunc) { throw new Error('Not implemented.'); };
R3JitReflector.prototype.hasLifecycleHook = function (type, lcProperty) { throw new Error('Not implemented.'); };
R3JitReflector.prototype.guards = function (typeOrFunc) { throw new Error('Not implemented.'); };
R3JitReflector.prototype.componentModuleUrl = function (type, cmpMetadata) { throw new Error('Not implemented.'); };
return R3JitReflector;
}());
/**
* JIT compiles an expression and returns the result of executing that expression.
*
* @param def the definition which will be compiled and executed to get the value to patch
* @param context an object map of @angular/core symbol names to symbols which will be available in
* the context of the compiled expression
* @param sourceUrl a URL to use for the source map of the compiled expression
* @param constantPool an optional `ConstantPool` which contains constants used in the expression
*/
export function jitExpression(def, context, sourceUrl, constantPool) {
// The ConstantPool may contain Statements which declare variables used in the final expression.
// Therefore, its statements need to precede the actual JIT operation. The final statement is a
// declaration of $def which is set to the expression being compiled.
var statements = tslib_1.__spread((constantPool !== undefined ? constantPool.statements : []), [
new o.DeclareVarStmt('$def', def, undefined, [o.StmtModifier.Exported]),
]);
var res = jitStatements(sourceUrl, statements, new R3JitReflector(context), false);
return res['$def'];
}
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