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Cleanup Extends -> Interface Change

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This commit is contained in:
Arthur Ozga 2016-10-31 14:47:02 -07:00
parent 16dc834d2d
commit cbaea9996c
1 changed files with 24 additions and 26 deletions
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50
src/services/codefixes/fixExtendsInterfaceBecomesImplements.ts
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@ -11,38 +11,36 @@ namespace ts.codefix {
return undefined;
}
const textChanges: TextChange[] = [];
const extendsNode = (token.parent.parent as HeritageClause).getChildren()[0];
const heritageNodes = (<HeritageClause>token.parent.parent).getChildren();
// This should never fail
Debug.assert(heritageNodes.length > 0);
const extendsIndex = 0;
const extendsNode = heritageNodes[0];
Debug.assert(extendsIndex === 0);
// We change the extends keyword to implements.
textChanges.push({ newText: " implements", span: { start: extendsNode.pos, length: extendsNode.end - extendsNode.pos } });
try {
// If the implements keyword exists, we replace it with a comma.
const implementsToken = <HeritageClause>token.parent.parent.parent.getChildren()[2].getChildren()[1];
Debug.assert(implementsToken.token === SyntaxKind.ImplementsKeyword);
const implementsNode = implementsToken.getChildren()[0];
textChanges.push({ newText: ",", span: { start: implementsNode.pos, length: implementsNode.end - implementsToken.pos } });
}
catch (e) {}
return [{
// TODO: (arozga) Move the locale-specific conversion further up the stack, since all
// the codefixes will need to call this?
let result = [{
description: getLocaleSpecificMessage(Diagnostics.Change_extends_to_implements),
changes: [{
fileName: sourceFile.fileName,
textChanges: textChanges
textChanges: [{ newText: " implements", span: { start: extendsNode.pos, length: extendsNode.end - extendsNode.pos } }]
}]
}];
// We check if the implements keyword is present and replace it with a comma if so.
const classDeclChildren = (token.parent.parent.parent as ClassDeclaration).getChildren();
if (classDeclChildren.length < 3) {
return result;
}
let classSyntaxListChildren: Node[];
if (classDeclChildren[2].kind !== SyntaxKind.SyntaxList || (classSyntaxListChildren = classDeclChildren[2].getChildren()).length < 2) {
return result;
}
let implementsTokenChildren: Node[];
if ((classSyntaxListChildren[1] as HeritageClause).token !== SyntaxKind.ImplementsKeyword || (implementsTokenChildren = classSyntaxListChildren[1].getChildren()).length === 0) {
return result;
}
const implementsNode = implementsTokenChildren[0];
result[0].changes[0].textChanges.push({ newText: ",", span: { start: implementsNode.pos, length: implementsNode.end - implementsNode.pos } });
return result;
}
});
}