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Get Widened Type

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This commit is contained in:
Arthur Ozga
2017-02-14 17:20:04 -08:00
parent 9897c69492
commit 92e4c6b7db
4 changed files with 41 additions and 23 deletions
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54
src/services/codefixes/fixAddMissingMember.ts
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@@ -12,32 +12,41 @@ namespace ts.codefix {
// This is the identifier in the case of a class declaration
// or the class keyword token in the case of a class expression.
const token = getTokenAtPosition(sourceFile, start);
const checker = context.program.getTypeChecker();
if(!(token.parent && token.parent.kind === SyntaxKind.PropertyAccessExpression)) {
const classDeclaration = getContainingClass(token);
if (!classDeclaration) {
return undefined;
}
if((token.parent as PropertyAccessExpression).expression.kind !== SyntaxKind.ThisKeyword) {
const startPos = classDeclaration.members.pos;
if (!(token.parent && token.parent.kind === SyntaxKind.PropertyAccessExpression)) {
return undefined;
}
1 + 1;
if ((token.parent as PropertyAccessExpression).expression.kind !== SyntaxKind.ThisKeyword) {
return undefined;
}
// if function call, synthesize function declaration
if(token.parent.parent.kind == SyntaxKind.CallExpression) {
}
let typeString: string = 'any';
// if binary expression, try to infer type for LHS, else use any
if(token.parent.parent.kind === SyntaxKind.BinaryExpression)
{
if (token.parent.parent.kind === SyntaxKind.BinaryExpression) {
const binaryExpression = token.parent.parent as BinaryExpression;
binaryExpression.operatorToken;
const type = checker.getTypeAtLocation(binaryExpression.right);
const checker = context.program.getTypeChecker();
const type = checker.getWidenedType(checker.getTypeAtLocation(binaryExpression.right));
typeString = checker.typeToString(type);
}
const classDeclaration = getContainingClass(token);
const startPos = classDeclaration.members.pos;
return [{
description: getLocaleSpecificMessage(Diagnostics.Implement_inherited_abstract_class),
description: formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Add_declaration_for_missing_property_0), [token.getText()]),
changes: [{
fileName: sourceFile.fileName,
textChanges: [{
@@ -45,14 +54,19 @@ namespace ts.codefix {
newText: `${token.getFullText(sourceFile)}: ${typeString};`
}]
}]
},
{
description: formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Add_index_accessor_for_missing_property_0), [token.getText()]),
changes: [{
fileName: sourceFile.fileName,
textChanges: [{
span: { start: startPos, length: 0 },
newText: `[name: string]: ${typeString};`
}]
}]
}];
}
// x needs to be a `this` construct. ie
// this.<thing>.
// Want to infer type of x when possible. ie:
// * assignment,
// * function call argument: foo<T>(this.x) where foo(x: SomeType<T>)
@@ -65,10 +79,4 @@ namespace ts.codefix {
// inferred type might be error. then add any.
// either make indexable of the inferred type
// add named member of the inferred type.
}
// // class C {
// // constructor() {
// // this.x = 1;
// // }
// // }
}