Support union of non identifier serialized type node with null/undefined/never
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59403796c7
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73a829279a
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@ -1637,6 +1637,8 @@ namespace ts {
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return createVoidZero();
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}
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type SerializedTypeNode = SerializedEntityNameAsExpression | VoidExpression | ConditionalExpression;
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/**
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* Serializes a type node for use with decorator type metadata.
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*
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@ -1655,7 +1657,7 @@ namespace ts {
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*
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* @param node The type node to serialize.
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*/
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function serializeTypeNode(node: TypeNode): Expression {
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function serializeTypeNode(node: TypeNode): SerializedTypeNode {
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if (node === undefined) {
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return createIdentifier("Object");
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}
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@ -1664,6 +1666,7 @@ namespace ts {
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case SyntaxKind.VoidKeyword:
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case SyntaxKind.UndefinedKeyword:
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case SyntaxKind.NullKeyword:
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case SyntaxKind.NeverKeyword:
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return createVoidZero();
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case SyntaxKind.ParenthesizedType:
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@ -1715,45 +1718,8 @@ namespace ts {
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case SyntaxKind.IntersectionType:
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case SyntaxKind.UnionType:
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{
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const unionOrIntersection = <UnionOrIntersectionTypeNode>node;
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let serializedUnion: Identifier | VoidExpression;
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for (const typeNode of unionOrIntersection.types) {
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const serializedIndividual = serializeTypeNode(typeNode);
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return serializeUnionOrIntersectionType(<UnionOrIntersectionTypeNode>node);
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if (isIdentifier(serializedIndividual)) {
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// One of the individual is global object, return immediately
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if (serializedIndividual.text === "Object") {
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return serializedIndividual;
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}
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// Different types
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if (serializedUnion && isIdentifier(serializedUnion) && serializedUnion.text !== serializedIndividual.text) {
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serializedUnion = undefined;
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break;
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}
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serializedUnion = serializedIndividual;
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}
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else if (isVoidExpression(serializedIndividual)) {
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// If we dont have any other type already set, set the initial type
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if (!serializedUnion) {
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serializedUnion = serializedIndividual;
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}
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}
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else {
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// Non identifier and undefined/null
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serializedUnion = undefined;
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break;
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}
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}
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// If we were able to find common type
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if (serializedUnion) {
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return serializedUnion;
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}
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}
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// Fallthrough
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case SyntaxKind.TypeQuery:
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case SyntaxKind.TypeOperator:
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case SyntaxKind.IndexedAccessType:
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@ -1761,7 +1727,6 @@ namespace ts {
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case SyntaxKind.TypeLiteral:
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case SyntaxKind.AnyKeyword:
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case SyntaxKind.ThisType:
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case SyntaxKind.NeverKeyword:
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break;
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default:
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@ -1772,13 +1737,48 @@ namespace ts {
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return createIdentifier("Object");
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}
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function serializeUnionOrIntersectionType(node: UnionOrIntersectionTypeNode): SerializedTypeNode {
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let serializedUnion: SerializedTypeNode;
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for (const typeNode of node.types) {
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const serializedIndividual = serializeTypeNode(typeNode);
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if (isVoidExpression(serializedIndividual)) {
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// If we dont have any other type already set, set the initial type
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if (!serializedUnion) {
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serializedUnion = serializedIndividual;
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}
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}
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else if (isIdentifier(serializedIndividual) && serializedIndividual.text === "Object") {
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// One of the individual is global object, return immediately
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return serializedIndividual;
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}
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// If there exists union that is not void 0 expression, check if the the common type is identifier.
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// anything more complex and we will just default to Object
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else if (serializedUnion && !isVoidExpression(serializedUnion)) {
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// Different types
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if (!isIdentifier(serializedUnion) ||
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!isIdentifier(serializedIndividual) ||
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serializedUnion.text !== serializedIndividual.text) {
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return createIdentifier("Object");
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}
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}
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else {
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// Initialize the union type
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serializedUnion = serializedIndividual;
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}
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}
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// If we were able to find common type, use it
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return serializedUnion;
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}
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/**
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* Serializes a TypeReferenceNode to an appropriate JS constructor value for use with
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* decorator type metadata.
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*
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* @param node The type reference node.
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*/
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function serializeTypeReferenceNode(node: TypeReferenceNode) {
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function serializeTypeReferenceNode(node: TypeReferenceNode): SerializedTypeNode {
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switch (resolver.getTypeReferenceSerializationKind(node.typeName, currentScope)) {
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case TypeReferenceSerializationKind.Unknown:
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const serialized = serializeEntityNameAsExpression(node.typeName, /*useFallback*/ true);
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@ -1826,6 +1826,7 @@ namespace ts {
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}
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}
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type SerializedEntityNameAsExpression = Identifier | BinaryExpression | PropertyAccessExpression;
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/**
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* Serializes an entity name as an expression for decorator type metadata.
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*
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@ -1833,7 +1834,7 @@ namespace ts {
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* @param useFallback A value indicating whether to use logical operators to test for the
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* entity name at runtime.
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*/
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function serializeEntityNameAsExpression(node: EntityName, useFallback: boolean): Expression {
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function serializeEntityNameAsExpression(node: EntityName, useFallback: boolean): SerializedEntityNameAsExpression {
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switch (node.kind) {
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case SyntaxKind.Identifier:
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// Create a clone of the name with a new parent, and treat it as if it were
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@ -1866,8 +1867,8 @@ namespace ts {
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* @param useFallback A value indicating whether to use logical operators to test for the
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* qualified name at runtime.
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*/
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function serializeQualifiedNameAsExpression(node: QualifiedName, useFallback: boolean): Expression {
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let left: Expression;
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function serializeQualifiedNameAsExpression(node: QualifiedName, useFallback: boolean): PropertyAccessExpression {
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let left: SerializedEntityNameAsExpression;
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if (node.left.kind === SyntaxKind.Identifier) {
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left = serializeEntityNameAsExpression(node.left, useFallback);
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}
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@ -1892,7 +1893,7 @@ namespace ts {
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* Gets an expression that points to the global "Symbol" constructor at runtime if it is
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* available.
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*/
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function getGlobalSymbolNameWithFallback(): Expression {
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function getGlobalSymbolNameWithFallback(): ConditionalExpression {
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return createConditional(
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createTypeCheck(createIdentifier("Symbol"), "function"),
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createIdentifier("Symbol"),
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@ -25,6 +25,21 @@ class B {
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@PropDeco
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d: undefined | null;
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@PropDeco
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e: symbol | null;
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@PropDeco
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f: symbol | A;
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@PropDeco
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g: A | null;
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@PropDeco
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h: null | B;
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@PropDeco
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j: null | symbol;
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}
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//// [metadataOfUnionWithNull.js]
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@ -54,7 +69,7 @@ __decorate([
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], B.prototype, "x");
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__decorate([
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PropDeco,
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__metadata("design:type", Object)
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__metadata("design:type", Boolean)
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], B.prototype, "y");
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__decorate([
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PropDeco,
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@ -66,7 +81,7 @@ __decorate([
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], B.prototype, "a");
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__decorate([
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PropDeco,
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__metadata("design:type", Object)
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__metadata("design:type", void 0)
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], B.prototype, "b");
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__decorate([
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PropDeco,
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@ -76,3 +91,23 @@ __decorate([
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PropDeco,
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__metadata("design:type", void 0)
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], B.prototype, "d");
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__decorate([
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PropDeco,
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__metadata("design:type", typeof Symbol === "function" ? Symbol : Object)
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], B.prototype, "e");
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__decorate([
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PropDeco,
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__metadata("design:type", Object)
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], B.prototype, "f");
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__decorate([
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PropDeco,
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__metadata("design:type", A)
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], B.prototype, "g");
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__decorate([
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PropDeco,
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__metadata("design:type", B)
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], B.prototype, "h");
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__decorate([
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PropDeco,
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__metadata("design:type", typeof Symbol === "function" ? Symbol : Object)
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], B.prototype, "j");
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@ -53,4 +53,37 @@ class B {
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d: undefined | null;
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>d : Symbol(B.d, Decl(metadataOfUnionWithNull.ts, 22, 17))
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@PropDeco
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>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
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e: symbol | null;
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>e : Symbol(B.e, Decl(metadataOfUnionWithNull.ts, 25, 24))
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@PropDeco
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>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
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f: symbol | A;
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>f : Symbol(B.f, Decl(metadataOfUnionWithNull.ts, 28, 21))
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>A : Symbol(A, Decl(metadataOfUnionWithNull.ts, 0, 63))
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@PropDeco
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>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
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g: A | null;
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>g : Symbol(B.g, Decl(metadataOfUnionWithNull.ts, 31, 18))
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>A : Symbol(A, Decl(metadataOfUnionWithNull.ts, 0, 63))
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@PropDeco
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>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
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h: null | B;
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>h : Symbol(B.h, Decl(metadataOfUnionWithNull.ts, 34, 16))
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>B : Symbol(B, Decl(metadataOfUnionWithNull.ts, 3, 1))
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@PropDeco
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>PropDeco : Symbol(PropDeco, Decl(metadataOfUnionWithNull.ts, 0, 0))
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j: null | symbol;
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>j : Symbol(B.j, Decl(metadataOfUnionWithNull.ts, 37, 16))
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}
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@ -56,5 +56,42 @@ class B {
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d: undefined | null;
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>d : null
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>null : null
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@PropDeco
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>PropDeco : (target: Object, propKey: string | symbol) => void
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e: symbol | null;
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>e : symbol
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>null : null
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@PropDeco
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>PropDeco : (target: Object, propKey: string | symbol) => void
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f: symbol | A;
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>f : symbol | A
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>A : A
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@PropDeco
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>PropDeco : (target: Object, propKey: string | symbol) => void
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g: A | null;
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>g : A
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>A : A
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>null : null
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@PropDeco
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>PropDeco : (target: Object, propKey: string | symbol) => void
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h: null | B;
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>h : B
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>null : null
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>B : B
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@PropDeco
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>PropDeco : (target: Object, propKey: string | symbol) => void
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j: null | symbol;
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>j : symbol
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>null : null
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}
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@ -26,4 +26,19 @@ class B {
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@PropDeco
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d: undefined | null;
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@PropDeco
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e: symbol | null;
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@PropDeco
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f: symbol | A;
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@PropDeco
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g: A | null;
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@PropDeco
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h: null | B;
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@PropDeco
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j: null | symbol;
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}
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