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rename.ts
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98 lines (90 loc) · 4.75 KB
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/* @internal */
namespace ts.Rename {
export function getRenameInfo(typeChecker: TypeChecker, defaultLibFileName: string, getCanonicalFileName: (fileName: string) => string, sourceFile: SourceFile, position: number): RenameInfo {
const canonicalDefaultLibName = getCanonicalFileName(ts.normalizePath(defaultLibFileName));
const node = getTouchingWord(sourceFile, position, /*includeJsDocComment*/ true);
if (node) {
if (node.kind === SyntaxKind.Identifier ||
node.kind === SyntaxKind.StringLiteral ||
isLiteralNameOfPropertyDeclarationOrIndexAccess(node) ||
isThis(node)) {
const symbol = typeChecker.getSymbolAtLocation(node);
// Only allow a symbol to be renamed if it actually has at least one declaration.
if (symbol) {
const declarations = symbol.getDeclarations();
if (declarations && declarations.length > 0) {
// Disallow rename for elements that are defined in the standard TypeScript library.
if (forEach(declarations, isDefinedInLibraryFile)) {
return getRenameInfoError(getLocaleSpecificMessage(Diagnostics.You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library));
}
const displayName = stripQuotes(getDeclaredName(typeChecker, symbol, node));
const kind = SymbolDisplay.getSymbolKind(typeChecker, symbol, node);
if (kind) {
return {
canRename: true,
kind,
displayName,
localizedErrorMessage: undefined,
fullDisplayName: typeChecker.getFullyQualifiedName(symbol),
kindModifiers: SymbolDisplay.getSymbolModifiers(symbol),
triggerSpan: createTriggerSpanForNode(node, sourceFile)
};
}
}
}
else if (node.kind === SyntaxKind.StringLiteral) {
const type = getStringLiteralTypeForNode(<StringLiteral>node, typeChecker);
if (type) {
if (isDefinedInLibraryFile(node)) {
return getRenameInfoError(getLocaleSpecificMessage(Diagnostics.You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library));
}
else {
const displayName = stripQuotes(type.text);
return {
canRename: true,
kind: ScriptElementKind.variableElement,
displayName,
localizedErrorMessage: undefined,
fullDisplayName: displayName,
kindModifiers: ScriptElementKindModifier.none,
triggerSpan: createTriggerSpanForNode(node, sourceFile)
};
}
}
}
}
}
return getRenameInfoError(getLocaleSpecificMessage(Diagnostics.You_cannot_rename_this_element));
function getRenameInfoError(localizedErrorMessage: string): RenameInfo {
return {
canRename: false,
localizedErrorMessage: localizedErrorMessage,
displayName: undefined,
fullDisplayName: undefined,
kind: undefined,
kindModifiers: undefined,
triggerSpan: undefined
};
}
function isDefinedInLibraryFile(declaration: Node) {
if (defaultLibFileName) {
const sourceFile = declaration.getSourceFile();
const canonicalName = getCanonicalFileName(ts.normalizePath(sourceFile.fileName));
if (canonicalName === canonicalDefaultLibName) {
return true;
}
}
return false;
}
function createTriggerSpanForNode(node: Node, sourceFile: SourceFile) {
let start = node.getStart(sourceFile);
let width = node.getWidth(sourceFile);
if (node.kind === SyntaxKind.StringLiteral) {
// Exclude the quotes
start += 1;
width -= 2;
}
return createTextSpan(start, width);
}
}
}