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fix(core): properly evaluate expressions with conditional and boolean operators 

Fixes #8235
Fixes #8244

Closes #8282
This commit is contained in:
Pawel Kozlowski 2016-04-27 15:30:07 +02:00
parent 1e8864c4a5
commit 1ad2a02b11
5 changed files with 34 additions and 4 deletions
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4
modules/angular2/src/compiler/output/abstract_emitter.ts
View File

@ -264,11 +264,13 @@ export abstract class AbstractEmitterVisitor implements o.StatementVisitor, o.Ex
abstract visitExternalExpr(ast: o.ExternalExpr, ctx: EmitterVisitorContext): any;
visitConditionalExpr(ast: o.ConditionalExpr, ctx: EmitterVisitorContext): any {
ctx.print(`(`);
ast.condition.visitExpression(this, ctx);
ctx.print('? ');
ast.trueCase.visitExpression(this, ctx);
ctx.print(': ');
ast.falseCase.visitExpression(this, ctx);
ctx.print(`)`);
return null;
}
visitNotExpr(ast: o.NotExpr, ctx: EmitterVisitorContext): any {
@ -421,4 +423,4 @@ function _createIndent(count: number): string {
res += ' ';
}
return res;
}
}

2
modules/angular2/test/compiler/output/dart_emitter_spec.ts
View File

@ -136,7 +136,7 @@ export function main() {
expect(emitStmt(o.not(someVar).toStmt())).toEqual('!someVar;');
expect(
emitStmt(someVar.conditional(o.variable('trueCase'), o.variable('falseCase')).toStmt()))
.toEqual('someVar? trueCase: falseCase;');
.toEqual('(someVar? trueCase: falseCase);');
expect(emitStmt(lhs.equals(rhs).toStmt())).toEqual('(lhs == rhs);');
expect(emitStmt(lhs.notEquals(rhs).toStmt())).toEqual('(lhs != rhs);');

2
modules/angular2/test/compiler/output/js_emitter_spec.ts
View File

@ -125,7 +125,7 @@ export function main() {
expect(emitStmt(o.not(someVar).toStmt())).toEqual('!someVar;');
expect(
emitStmt(someVar.conditional(o.variable('trueCase'), o.variable('falseCase')).toStmt()))
.toEqual('someVar? trueCase: falseCase;');
.toEqual('(someVar? trueCase: falseCase);');
expect(emitStmt(lhs.equals(rhs).toStmt())).toEqual('(lhs == rhs);');
expect(emitStmt(lhs.notEquals(rhs).toStmt())).toEqual('(lhs != rhs);');

2
modules/angular2/test/compiler/output/ts_emitter_spec.ts
View File

@ -126,7 +126,7 @@ export function main() {
expect(emitStmt(o.not(someVar).toStmt())).toEqual('!someVar;');
expect(
emitStmt(someVar.conditional(o.variable('trueCase'), o.variable('falseCase')).toStmt()))
.toEqual('someVar? trueCase: falseCase;');
.toEqual('(someVar? trueCase: falseCase);');
expect(emitStmt(lhs.equals(rhs).toStmt())).toEqual('(lhs == rhs);');
expect(emitStmt(lhs.notEquals(rhs).toStmt())).toEqual('(lhs != rhs);');

28
modules/angular2/test/core/linker/regression_integration_spec.ts
View File

@ -71,7 +71,35 @@ function declareTests(isJit: boolean) {
async.done();
});
}));
});
describe('expressions', () => {
it('should evaluate conditional and boolean operators with right precedence - #8244',
inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
tcb.overrideView(MyComp,
new ViewMetadata({template: `{{'red' + (true ? ' border' : '')}}`}))
.createAsync(MyComp)
.then((fixture) => {
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('red border');
async.done();
});
}));
if (!IS_DART) {
it('should evaluate conditional and unary operators with right precedence - #8235',
inject([TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async) => {
tcb.overrideView(MyComp, new ViewMetadata({template: `{{!null?.length}}`}))
.createAsync(MyComp)
.then((fixture) => {
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('true');
async.done();
});
}));
}
});
describe('providers', () => {