https://github.com/Microsoft/TypeScript
Tip revision: ad8c6c7e418bb1fff79da2f1c10a17ee4bdf339a authored by Daniel Rosenwasser on 10 February 2021, 20:09:30 UTC
Pin Node for Volta, bump version to 3.1.8, update LKG
Pin Node for Volta, bump version to 3.1.8, update LKG
Tip revision: ad8c6c7
rename.ts
/* @internal */
namespace ts.Rename {
export function getRenameInfo(program: Program, sourceFile: SourceFile, position: number): RenameInfo {
const node = getTouchingPropertyName(sourceFile, position);
const renameInfo = node && nodeIsEligibleForRename(node)
? getRenameInfoForNode(node, program.getTypeChecker(), sourceFile, declaration => program.isSourceFileDefaultLibrary(declaration.getSourceFile()))
: undefined;
return renameInfo || getRenameInfoError(Diagnostics.You_cannot_rename_this_element);
}
function getRenameInfoForNode(node: Node, typeChecker: TypeChecker, sourceFile: SourceFile, isDefinedInLibraryFile: (declaration: Node) => boolean): RenameInfo | undefined {
const symbol = typeChecker.getSymbolAtLocation(node);
if (!symbol) return;
// Only allow a symbol to be renamed if it actually has at least one declaration.
const { declarations } = symbol;
if (!declarations || declarations.length === 0) return;
// Disallow rename for elements that are defined in the standard TypeScript library.
if (declarations.some(isDefinedInLibraryFile)) {
return getRenameInfoError(Diagnostics.You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library);
}
// Cannot rename `default` as in `import { default as foo } from "./someModule";
if (isIdentifier(node) && node.originalKeywordKind === SyntaxKind.DefaultKeyword && symbol.parent!.flags & SymbolFlags.Module) {
return undefined;
}
if (isStringLiteralLike(node) && tryGetImportFromModuleSpecifier(node)) {
return getRenameInfoForModule(node, sourceFile, symbol);
}
const kind = SymbolDisplay.getSymbolKind(typeChecker, symbol, node);
const specifierName = (isImportOrExportSpecifierName(node) || isStringOrNumericLiteralLike(node) && node.parent.kind === SyntaxKind.ComputedPropertyName)
? stripQuotes(getTextOfIdentifierOrLiteral(node))
: undefined;
const displayName = specifierName || typeChecker.symbolToString(symbol);
const fullDisplayName = specifierName || typeChecker.getFullyQualifiedName(symbol);
return getRenameInfoSuccess(displayName, fullDisplayName, kind, SymbolDisplay.getSymbolModifiers(symbol), node, sourceFile);
}
function getRenameInfoForModule(node: StringLiteralLike, sourceFile: SourceFile, moduleSymbol: Symbol): RenameInfo | undefined {
if (!isExternalModuleNameRelative(node.text)) {
return getRenameInfoError(Diagnostics.You_cannot_rename_a_module_via_a_global_import);
}
const moduleSourceFile = find(moduleSymbol.declarations, isSourceFile);
if (!moduleSourceFile) return undefined;
const withoutIndex = node.text.endsWith("/index") || node.text.endsWith("/index.js") ? undefined : tryRemoveSuffix(removeFileExtension(moduleSourceFile.fileName), "/index");
const name = withoutIndex === undefined ? moduleSourceFile.fileName : withoutIndex;
const kind = withoutIndex === undefined ? ScriptElementKind.moduleElement : ScriptElementKind.directory;
const indexAfterLastSlash = node.text.lastIndexOf("/") + 1;
// Span should only be the last component of the path. + 1 to account for the quote character.
const triggerSpan = createTextSpan(node.getStart(sourceFile) + 1 + indexAfterLastSlash, node.text.length - indexAfterLastSlash);
return {
canRename: true,
fileToRename: name,
kind,
displayName: name,
fullDisplayName: name,
kindModifiers: ScriptElementKindModifier.none,
triggerSpan,
};
}
function getRenameInfoSuccess(displayName: string, fullDisplayName: string, kind: ScriptElementKind, kindModifiers: string, node: Node, sourceFile: SourceFile): RenameInfoSuccess {
return {
canRename: true,
fileToRename: undefined,
kind,
displayName,
fullDisplayName,
kindModifiers,
triggerSpan: createTriggerSpanForNode(node, sourceFile)
};
}
function getRenameInfoError(diagnostic: DiagnosticMessage): RenameInfoFailure {
return { canRename: false, localizedErrorMessage: getLocaleSpecificMessage(diagnostic) };
}
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);
}
function nodeIsEligibleForRename(node: Node): boolean {
switch (node.kind) {
case SyntaxKind.Identifier:
case SyntaxKind.StringLiteral:
case SyntaxKind.ThisKeyword:
return true;
case SyntaxKind.NumericLiteral:
return isLiteralNameOfPropertyDeclarationOrIndexAccess(node as NumericLiteral);
default:
return false;
}
}
}