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fix(language-service): treat string unions as strings (#13406)

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Fixes #13403
This commit is contained in:
Chuck Jazdzewski
2016-12-12 16:42:20 -08:00
committed by Victor Berchet
parent e23076f767
commit 6f330a5fc9
2 changed files with 48 additions and 19 deletions
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51
modules/@angular/language-service/src/typescript_host.ts
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@ -571,25 +571,7 @@ class TypeScriptSymbolQuery implements SymbolQuery {
private program: ts.Program, private checker: ts.TypeChecker, private source: ts.SourceFile,
private fetchPipes: () => SymbolTable) {}
getTypeKind(symbol: Symbol): BuiltinType {
const type = this.getTsTypeOf(symbol);
if (type) {
if (type.flags & ts.TypeFlags.Any) {
return BuiltinType.Any;
} else if (
type.flags &
(ts.TypeFlags.String | ts.TypeFlags.StringLike | ts.TypeFlags.StringLiteral)) {
return BuiltinType.String;
} else if (type.flags & (ts.TypeFlags.Number | ts.TypeFlags.NumberLike)) {
return BuiltinType.Number;
} else if (type.flags & (ts.TypeFlags.Undefined)) {
return BuiltinType.Undefined;
} else if (type.flags & (ts.TypeFlags.Null)) {
return BuiltinType.Null;
}
}
return BuiltinType.Other;
}
getTypeKind(symbol: Symbol): BuiltinType { return typeKindOf(this.getTsTypeOf(symbol)); }
getBuiltinType(kind: BuiltinType): Symbol {
// TODO: Replace with typeChecker API when available.
@ -1223,4 +1205,35 @@ function getTypeParameterOf(type: ts.Type, name: string): ts.Type {
return typeArguments[0];
}
}
}
function typeKindOf(type: ts.Type): BuiltinType {
if (type) {
if (type.flags & ts.TypeFlags.Any) {
return BuiltinType.Any;
} else if (
type.flags & (ts.TypeFlags.String | ts.TypeFlags.StringLike | ts.TypeFlags.StringLiteral)) {
return BuiltinType.String;
} else if (type.flags & (ts.TypeFlags.Number | ts.TypeFlags.NumberLike)) {
return BuiltinType.Number;
} else if (type.flags & (ts.TypeFlags.Undefined)) {
return BuiltinType.Undefined;
} else if (type.flags & (ts.TypeFlags.Null)) {
return BuiltinType.Null;
} else if (type.flags & ts.TypeFlags.Union) {
// If all the constituent types of a union are the same kind, it is also that kind.
let candidate: BuiltinType;
const unionType = type as ts.UnionType;
if (unionType.types.length > 0) {
candidate = typeKindOf(unionType.types[0]);
for (const subType of unionType.types) {
if (candidate != typeKindOf(subType)) {
return BuiltinType.Other;
}
}
}
return candidate;
}
}
return BuiltinType.Other;
}