本文整理汇总了TypeScript中@angular/compiler/src/output/dart_emitter.DartEmitter类的典型用法代码示例。如果您正苦于以下问题：TypeScript DartEmitter类的具体用法？TypeScript DartEmitter怎么用？TypeScript DartEmitter使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了DartEmitter类的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: describe
describe('DartEmitter', () => {
var emitter: DartEmitter;
var someVar: o.ReadVarExpr;
beforeEach(() => {
emitter = new DartEmitter();
someVar = o.variable('someVar');
});
function emitStmt(stmt: o.Statement, exportedVars: string[] = null): string {
if (isBlank(exportedVars)) {
exportedVars = [];
}
return emitter.emitStatements(someModuleUrl, [stmt], exportedVars);
}
it('should declare variables', () => {
expect(emitStmt(someVar.set(o.literal(1)).toDeclStmt())).toEqual(`var someVar = 1;`);
expect(emitStmt(someVar.set(o.literal(1)).toDeclStmt(null, [o.StmtModifier.Final])))
.toEqual(`final someVar = 1;`);
expect(emitStmt(someVar.set(o.literal(1, new o.BuiltinType(o.BuiltinTypeName.Int,
[o.TypeModifier.Const])))
.toDeclStmt(null, [o.StmtModifier.Final])))
.toEqual(`const int someVar = 1;`);
expect(emitStmt(someVar.set(o.literal(1)).toDeclStmt(), ['someVar']))
.toEqual(`var someVar = 1;`);
expect(emitStmt(someVar.set(o.literal(1)).toDeclStmt(o.INT_TYPE)))
.toEqual(`int someVar = 1;`);
});
it('should read and write variables', () => {
expect(emitStmt(someVar.toStmt())).toEqual(`someVar;`);
expect(emitStmt(someVar.set(o.literal(1)).toStmt())).toEqual(`someVar = 1;`);
expect(emitStmt(someVar.set(o.variable('someOtherVar').set(o.literal(1))).toStmt()))
.toEqual(`someVar = (someOtherVar = 1);`);
});
it('should read and write keys', () => {
expect(emitStmt(o.variable('someMap').key(o.variable('someKey')).toStmt()))
.toEqual(`someMap[someKey];`);
expect(emitStmt(o.variable('someMap').key(o.variable('someKey')).set(o.literal(1)).toStmt()))
.toEqual(`someMap[someKey] = 1;`);
});
it('should read and write properties', () => {
expect(emitStmt(o.variable('someObj').prop('someProp').toStmt()))
.toEqual(`someObj.someProp;`);
expect(emitStmt(o.variable('someObj').prop('someProp').set(o.literal(1)).toStmt()))
.toEqual(`someObj.someProp = 1;`);
});
it('should invoke functions and methods and constructors', () => {
expect(emitStmt(o.variable('someFn').callFn([o.literal(1)]).toStmt())).toEqual('someFn(1);');
expect(emitStmt(o.variable('someObj').callMethod('someMethod', [o.literal(1)]).toStmt()))
.toEqual('someObj.someMethod(1);');
expect(emitStmt(o.variable('SomeClass').instantiate([o.literal(1)]).toStmt()))
.toEqual('new SomeClass(1);');
});
it('should support builtin methods', () => {
expect(emitStmt(o.variable('arr1')
.callMethod(o.BuiltinMethod.ConcatArray, [o.variable('arr2')])
.toStmt()))
.toEqual('arr1..addAll(arr2);');
expect(emitStmt(o.variable('observable')
.callMethod(o.BuiltinMethod.SubscribeObservable, [o.variable('listener')])
.toStmt()))
.toEqual('observable.listen(listener);');
expect(
emitStmt(
o.variable('fn').callMethod(o.BuiltinMethod.bind, [o.variable('someObj')]).toStmt()))
.toEqual('fn;');
});
it('should support literals', () => {
expect(emitStmt(o.literal(0).toStmt())).toEqual('0;');
expect(emitStmt(o.literal(true).toStmt())).toEqual('true;');
expect(emitStmt(o.literal('someStr').toStmt())).toEqual(`'someStr';`);
expect(emitStmt(o.literal('$a').toStmt())).toEqual(`'\\$a';`);
expect(emitStmt(o.literalArr([o.literal(1)]).toStmt())).toEqual(`[1];`);
expect(emitStmt(o.literalMap([['someKey', o.literal(1)]]).toStmt()))
.toEqual(`{'someKey': 1};`);
expect(emitStmt(
o.literalMap([['someKey', o.literal(1)]], new o.MapType(o.NUMBER_TYPE)).toStmt()))
.toEqual(`<String, num>{'someKey': 1};`);
});
it('should support external identifiers', () => {
expect(emitStmt(o.importExpr(sameModuleIdentifier).toStmt())).toEqual('someLocalId;');
expect(emitStmt(o.importExpr(externalModuleIdentifier).toStmt()))
.toEqual([`import 'someOtherPath' as import0;`, `import0.someExternalId;`].join('\n'));
});
it('should support operators', () => {
var lhs = o.variable('lhs');
var rhs = o.variable('rhs');
expect(emitStmt(someVar.cast(o.INT_TYPE).toStmt())).toEqual('(someVar as int);');
expect(emitStmt(o.not(someVar).toStmt())).toEqual('!someVar;');
//.........这里部分代码省略.........
示例2: emitStmt
function emitStmt(stmt: o.Statement, exportedVars: string[] = null): string {
if (isBlank(exportedVars)) {
exportedVars = [];
}
return emitter.emitStatements(someModuleUrl, [stmt], exportedVars);
}