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feat(compiler): Support default parameters in static reflector (#10370) 

Closes: #10369
This commit is contained in:
Chuck Jazdzewski 2016-07-29 09:10:45 -07:00 committed by GitHub
parent 0eca7abdd8
commit 763ca60f5b
5 changed files with 88 additions and 18 deletions
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13
modules/@angular/compiler-cli/src/static_reflector.ts
View File

@ -308,12 +308,17 @@ export class StaticReflector implements ReflectorReader {
}
calling.set(functionSymbol, true);
try {
let value = targetFunction['value'];
const value = targetFunction['value'];
if (value && (depth != 0 || value.__symbolic != 'error')) {
// Determine the arguments
let args = (expression['arguments'] || []).map((arg: any) => simplify(arg));
let parameters: string[] = targetFunction['parameters'];
let functionScope = BindingScope.build();
const args: any[] =
(expression['arguments'] || []).map((arg: any) => simplify(arg));
const parameters: string[] = targetFunction['parameters'];
const defaults: any[] = targetFunction.defaults;
if (defaults && defaults.length > args.length) {
args.push(...defaults.slice(args.length).map((value: any) => simplify(value)));
}
const functionScope = BindingScope.build();
for (let i = 0; i < parameters.length; i++) {
functionScope.define(parameters[i], args[i]);
}

16
modules/@angular/compiler-cli/test/static_reflector_spec.ts
View File

@ -421,6 +421,14 @@ describe('StaticReflector', () => {
[{provider: 'a', useValue: '1'}], [{provider: 'a', useValue: '2'}]
]);
});
it('should be able to get the metadata for a class calling a method with default parameters',
() => {
const annotations = reflector.annotations(
host.getStaticSymbol('/tmp/src/static-method-call.ts', 'MyDefaultsComponent'));
expect(annotations.length).toBe(1);
expect(annotations[0].providers).toEqual([['a', true, false]]);
});
});
class MockReflectorHost implements StaticReflectorHost {
@ -973,6 +981,9 @@ class MockReflectorHost implements StaticReflectorHost {
static condMethod(cond: boolean) {
return [{ provider: 'a', useValue: cond ? '1' : '2'}];
}
static defaultsMethod(a, b = true, c = false) {
return [a, b, c];
}
}
`,
'/tmp/src/static-method-call.ts': `
@ -988,6 +999,11 @@ class MockReflectorHost implements StaticReflectorHost {
providers: [MyModule.condMethod(true), MyModule.condMethod(false)]
})
export class MyCondComponent { }
@Component({
providers: [MyModule.defaultsMethod('a')]
})
export class MyDefaultsComponent { }
`,
'/tmp/src/static-field.ts': `
import {Injectable} from 'angular2/core';

26
tools/@angular/tsc-wrapped/src/collector.ts
View File

@ -1,7 +1,7 @@
import * as ts from 'typescript';
import {Evaluator, errorSymbol, isPrimitive} from './evaluator';
import {ClassMetadata, ConstructorMetadata, MemberMetadata, MetadataError, MetadataMap, MetadataObject, MetadataSymbolicExpression, MetadataSymbolicReferenceExpression, MetadataSymbolicSelectExpression, MetadataValue, MethodMetadata, ModuleMetadata, VERSION, isMetadataError, isMetadataSymbolicReferenceExpression, isMetadataSymbolicSelectExpression} from './schema';
import {ClassMetadata, ConstructorMetadata, FunctionMetadata, MemberMetadata, MetadataError, MetadataMap, MetadataObject, MetadataSymbolicExpression, MetadataSymbolicReferenceExpression, MetadataSymbolicSelectExpression, MetadataValue, MethodMetadata, ModuleMetadata, VERSION, isMetadataError, isMetadataSymbolicReferenceExpression, isMetadataSymbolicSelectExpression} from './schema';
import {Symbols} from './symbols';
@ -19,7 +19,7 @@ export class MetadataCollector {
public getMetadata(sourceFile: ts.SourceFile): ModuleMetadata {
const locals = new Symbols(sourceFile);
const evaluator = new Evaluator(locals);
let metadata: {[name: string]: MetadataValue | ClassMetadata}|undefined;
let metadata: {[name: string]: MetadataValue | ClassMetadata | FunctionMetadata}|undefined;
function objFromDecorator(decoratorNode: ts.Decorator): MetadataSymbolicExpression {
return <MetadataSymbolicExpression>evaluator.evaluateNode(decoratorNode.expression);
@ -32,7 +32,7 @@ export class MetadataCollector {
function maybeGetSimpleFunction(
functionDeclaration: ts.FunctionDeclaration |
ts.MethodDeclaration): {func: MetadataValue, name: string}|undefined {
ts.MethodDeclaration): {func: FunctionMetadata, name: string}|undefined {
if (functionDeclaration.name.kind == ts.SyntaxKind.Identifier) {
const nameNode = <ts.Identifier>functionDeclaration.name;
const functionName = nameNode.text;
@ -42,13 +42,17 @@ export class MetadataCollector {
if (statement.kind === ts.SyntaxKind.ReturnStatement) {
const returnStatement = <ts.ReturnStatement>statement;
if (returnStatement.expression) {
return {
name: functionName, func: {
__symbolic: 'function',
parameters: namesOf(functionDeclaration.parameters),
value: evaluator.evaluateNode(returnStatement.expression)
}
const func: FunctionMetadata = {
__symbolic: 'function',
parameters: namesOf(functionDeclaration.parameters),
value: evaluator.evaluateNode(returnStatement.expression)
};
if (functionDeclaration.parameters.some(p => p.initializer != null)) {
const defaults: MetadataValue[] = [];
func.defaults = functionDeclaration.parameters.map(
p => p.initializer && evaluator.evaluateNode(p.initializer));
}
return { func, name: functionName }
}
}
}
@ -90,8 +94,8 @@ export class MetadataCollector {
}
// static member
let statics: MetadataObject = null;
function recordStaticMember(name: string, value: MetadataValue) {
let statics: {[name: string]: MetadataValue | FunctionMetadata} = null;
function recordStaticMember(name: string, value: MetadataValue | FunctionMetadata) {
if (!statics) statics = {};
statics[name] = value;
}

7
tools/@angular/tsc-wrapped/src/schema.ts
View File

@ -12,7 +12,7 @@ export const VERSION = 1;
export interface ModuleMetadata {
__symbolic: 'module';
version: number;
metadata: {[name: string]: (ClassMetadata | MetadataValue)};
metadata: {[name: string]: (ClassMetadata | FunctionMetadata | MetadataValue)};
}
export function isModuleMetadata(value: any): value is ModuleMetadata {
return value && value.__symbolic === 'module';
@ -22,7 +22,7 @@ export interface ClassMetadata {
__symbolic: 'class';
decorators?: (MetadataSymbolicExpression|MetadataError)[];
members?: MetadataMap;
statics?: MetadataObject;
statics?: {[name: string]: MetadataValue | FunctionMetadata};
}
export function isClassMetadata(value: any): value is ClassMetadata {
return value && value.__symbolic === 'class';
@ -65,7 +65,8 @@ export function isConstructorMetadata(value: any): value is ConstructorMetadata
export interface FunctionMetadata {
__symbolic: 'function';
parameters: string[];
result: MetadataValue;
defaults?: MetadataValue[];
value: MetadataValue;
}
export function isFunctionMetadata(value: any): value is FunctionMetadata {
return value && value.__symbolic === 'function';

44
tools/@angular/tsc-wrapped/test/collector.spec.ts
View File

@ -28,6 +28,7 @@ describe('Collector', () => {
'static-method.ts',
'static-method-call.ts',
'static-method-with-if.ts',
'static-method-with-default.ts',
]);
service = ts.createLanguageService(host, documentRegistry);
program = service.getProgram();
@ -445,6 +446,35 @@ describe('Collector', () => {
}
});
});
it('should be able to collect a method with a default parameter', () => {
let source = program.getSourceFile('/static-method-with-default.ts');
let metadata = collector.getMetadata(source);
expect(metadata).toBeDefined();
let classData = <ClassMetadata>metadata.metadata['MyModule'];
expect(classData).toBeDefined();
expect(classData.statics).toEqual({
with: {
__symbolic: 'function',
parameters: ['comp', 'foo', 'bar'],
defaults: [undefined, true, false],
value: [
{__symbolic: 'reference', name: 'MyModule'}, {
__symbolic: 'if',
condition: {__symbolic: 'reference', name: 'foo'},
thenExpression: {provider: 'a', useValue: {__symbolic: 'reference', name: 'comp'}},
elseExpression: {provider: 'b', useValue: {__symbolic: 'reference', name: 'comp'}}
},
{
__symbolic: 'if',
condition: {__symbolic: 'reference', name: 'bar'},
thenExpression: {provider: 'c', useValue: {__symbolic: 'reference', name: 'comp'}},
elseExpression: {provider: 'd', useValue: {__symbolic: 'reference', name: 'comp'}}
}
]
}
});
});
});
// TODO: Do not use \` in a template literal as it confuses clang-format
@ -700,6 +730,20 @@ const FILES: Directory = {
}
}
`,
'static-method-with-default.ts': `
import {Injectable} from 'angular2/core';
@Injectable()
export class MyModule {
static with(comp: any, foo: boolean = true, bar: boolean = false): any[] {
return [
MyModule,
foo ? { provider: 'a', useValue: comp } : {provider: 'b', useValue: comp},
bar ? { provider: 'c', useValue: comp } : {provider: 'd', useValue: comp}
];
}
}
`,
'static-method-call.ts': `
import {Component} from 'angular2/core';
import {MyModule} from './static-method.ts';