microsoft/TypeScript
1
0
Fork 0
mirror of https://github.com/microsoft/TypeScript.git synced 2026-05-08 02:46:15 -05:00
Code Issues Packages Projects Releases 212 Wiki Activity

Merge pull request #31377 from microsoft/noThisParameterFiltering

Browse Source 
Revert this-parameter filtering in completions
This commit is contained in:
Anders Hejlsberg
2019-05-13 17:07:05 -07:00
committed by GitHub
parent 4da2c2506a d2923460e9
commit 70950cb934
2 changed files with 2 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/compiler/checker.ts
View File

@@ -20386,25 +20386,8 @@ namespace ts {
}
function isValidPropertyAccessForCompletions(node: PropertyAccessExpression | ImportTypeNode | QualifiedName, type: Type, property: Symbol): boolean {
return isValidPropertyAccessWithType(node, node.kind === SyntaxKind.PropertyAccessExpression && node.expression.kind === SyntaxKind.SuperKeyword, property.escapedName, type)
&& (!(property.flags & SymbolFlags.Method) || isValidMethodAccess(property, type));
}
function isValidMethodAccess(method: Symbol, actualThisType: Type): boolean {
const propType = getTypeOfPropertyOfType(actualThisType, method.escapedName)!;
const signatures = getSignaturesOfType(getNonNullableType(propType), SignatureKind.Call);
Debug.assert(signatures.length !== 0);
return signatures.some(sig => {
const signatureThisType = getThisTypeOfSignature(sig);
return !signatureThisType || isTypeAssignableTo(actualThisType, getInstantiatedSignatureThisType(sig, signatureThisType, actualThisType));
});
}
function getInstantiatedSignatureThisType(sig: Signature, signatureThisType: Type, actualThisType: Type): Type {
if (!sig.typeParameters) {
return signatureThisType;
}
const context = createInferenceContext(sig.typeParameters, sig, InferenceFlags.None);
inferTypes(context.inferences, actualThisType, signatureThisType);
return instantiateType(signatureThisType, createSignatureTypeMapper(sig, getInferredTypes(context)));
return isValidPropertyAccessWithType(node, node.kind === SyntaxKind.PropertyAccessExpression && node.expression.kind === SyntaxKind.SuperKeyword, property.escapedName, type);
// Previously we validated the 'this' type of methods but this adversely affected performance. See #31377 for more context.
}
function isValidPropertyAccessWithType(