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Clone node to remove location even when it has been modified if needed #58706

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merged 6 commits into from
May 31, 2024
Merged

Clone node to remove location even when it has been modified if needed #58706

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e85543f
Clone node to remove location even when it has been modified if needed
weswigham May 29, 2024
1d27384
Merge branch 'main' into textrange-to-original-node
weswigham May 30, 2024
a8f73f8
Accept baselines
weswigham May 30, 2024
9927a3c
Comment & small cleanup
weswigham May 31, 2024
e84e554
Merge branch 'main' into textrange-to-original-node
weswigham May 31, 2024
9400b2e
Tack locations onto copied type parameter names explicitly
weswigham May 31, 2024
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70 changes: 55 additions & 15 deletions src/compiler/checker.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -967,7 +967,7 @@ import {
ScriptKind,
ScriptTarget,
SetAccessorDeclaration,
setCommentRange,
setCommentRange as setCommentRangeWorker,
setEmitFlags,
setIdentifierTypeArguments,
setNodeFlags,
Expand Down Expand Up @@ -1094,7 +1094,7 @@ import {
VariableLikeDeclaration,
VariableStatement,
VarianceFlags,
visitEachChild,
visitEachChild as visitEachChildWorker,
visitNode,
visitNodes,
Visitor,
Expand Down Expand Up @@ -2426,7 +2426,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {

function markAsSynthetic<T extends Node>(node: T): VisitResult<T> {
setTextRangePosEnd(node, -1, -1);
return visitEachChild(node, markAsSynthetic, /*context*/ undefined);
return visitEachChildWorker(node, markAsSynthetic, /*context*/ undefined);
}

function getEmitResolver(sourceFile: SourceFile, cancellationToken: CancellationToken, skipDiagnostics?: boolean) {
Expand Down Expand Up @@ -6032,21 +6032,21 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
* Unlike the utilities `setTextRange`, this checks if the `location` we're trying to set on `range` is within the
* same file as the active context. If not, the range is not applied. This prevents us from copying ranges across files,
* which will confuse the node printer (as it assumes all node ranges are within the current file).
* Additionally, if `range` _isn't synthetic_, and isn't in the current file, it will _copy_ it to _remove_ its' position
* Additionally, if `range` _isn't synthetic_, or isn't in the current file, it will _copy_ it to _remove_ its' position
* information.
*
* It also calls `setOriginalNode` to setup a `.original` pointer, since you basically *always* want these in the node builder.
*/
function setTextRange<T extends Node>(context: NodeBuilderContext, range: T, location: Node | undefined): T {
if (!nodeIsSynthesized(range) && !(range.flags & NodeFlags.Synthesized) && (!context.enclosingFile || context.enclosingFile !== getSourceFileOfNode(range))) {
range = factory.cloneNode(range);
if (!nodeIsSynthesized(range) || !(range.flags & NodeFlags.Synthesized) || !context.enclosingFile || context.enclosingFile !== getSourceFileOfNode(getOriginalNode(range))) {
range = factory.cloneNode(range); // if `range` is synthesized or originates in another file, copy it so it definitely has synthetic positions
}
if (range === location) return range;
if (!location) {
return range;
}
if (!context.enclosingFile || context.enclosingFile !== getSourceFileOfNode(getOriginalNode(location))) {
return setOriginalNode(range, location);
return setOriginalNode(range, location); // if `location` is from another file, only set/update original pointer, and not positions, since copying text across files isn't supported by the emitter
}
return setTextRangeWorker(setOriginalNode(range, location), location);
}
Expand Down Expand Up @@ -6720,7 +6720,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
if (!nodeIsSynthesized(node) && getParseTreeNode(node) === node) {
return node;
}
return setTextRange(context, factory.cloneNode(visitEachChild(node, deepCloneOrReuseNode, /*context*/ undefined, deepCloneOrReuseNodes, deepCloneOrReuseNode)), node);
return setTextRange(context, factory.cloneNode(visitEachChildWorker(node, deepCloneOrReuseNode, /*context*/ undefined, deepCloneOrReuseNodes, deepCloneOrReuseNode)), node);
}

function deepCloneOrReuseNodes(
Expand Down Expand Up @@ -7067,6 +7067,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
const getterSignature = getSignatureFromDeclaration(getterDeclaration);
typeElements.push(
setCommentRange(
context,
signatureToSignatureDeclarationHelper(getterSignature, SyntaxKind.GetAccessor, context, { name: propertyName }) as GetAccessorDeclaration,
getterDeclaration,
),
Expand All @@ -7075,6 +7076,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
const setterSignature = getSignatureFromDeclaration(setterDeclaration);
typeElements.push(
setCommentRange(
context,
signatureToSignatureDeclarationHelper(setterSignature, SyntaxKind.SetAccessor, context, { name: propertyName }) as SetAccessorDeclaration,
setterDeclaration,
),
Expand Down Expand Up @@ -7132,12 +7134,20 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
}
else if (propertySymbol.valueDeclaration) {
// Copy comments to node for declaration emit
setCommentRange(node, propertySymbol.valueDeclaration);
setCommentRange(context, node, propertySymbol.valueDeclaration);
}
return node;
}
}

function setCommentRange<T extends Node>(context: NodeBuilderContext, node: T, range: Node): T {
if (context.enclosingFile && context.enclosingFile === getSourceFileOfNode(range)) {
// Copy comments to node for declaration emit
return setCommentRangeWorker(node, range);
}
return node;
}

function mapToTypeNodes(types: readonly Type[] | undefined, context: NodeBuilderContext, isBareList?: boolean): TypeNode[] | undefined {
if (some(types)) {
if (checkTruncationLength(context)) {
Expand Down Expand Up @@ -7579,7 +7589,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
if (context.tracker.canTrackSymbol && isComputedPropertyName(node) && isLateBindableName(node)) {
trackComputedName(node.expression, context.enclosingDeclaration, context);
}
let visited = visitEachChild(node, elideInitializerAndSetEmitFlags, /*context*/ undefined, /*nodesVisitor*/ undefined, elideInitializerAndSetEmitFlags);
let visited = visitEachChildWorker(node, elideInitializerAndSetEmitFlags, /*context*/ undefined, /*nodesVisitor*/ undefined, elideInitializerAndSetEmitFlags);
if (isBindingElement(visited)) {
visited = factory.updateBindingElement(
visited,
Expand Down Expand Up @@ -7992,6 +8002,10 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
if (!(result.kind & SyntaxKind.Identifier)) {
return factory.createIdentifier("(Missing type parameter)");
}
const decl = type.symbol?.declarations?.[0];
if (decl && isTypeParameterDeclaration(decl)) {
result = setTextRange(context, result, decl.name);
}
if (context.flags & NodeBuilderFlags.GenerateNamesForShadowedTypeParams) {
const rawtext = result.escapedText as string;
let i = context.typeParameterNamesByTextNextNameCount?.get(rawtext) || 0;
Expand Down Expand Up @@ -8393,7 +8407,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
name.symbol = sym!; // for quickinfo, which uses identifier symbol information
return setTextRange(context, setEmitFlags(name, EmitFlags.NoAsciiEscaping), node);
}
const updated = visitEachChild(node, c => attachSymbolToLeftmostIdentifier(c), /*context*/ undefined);
const updated = visitEachChildWorker(node, c => attachSymbolToLeftmostIdentifier(c), /*context*/ undefined);
if (updated !== node) {
setTextRange(context, updated, node);
}
Expand Down Expand Up @@ -8504,7 +8518,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
// is set to build for (even though we are reusing the node structure, the position information
// would make the printer print invalid spans for literals and identifiers, and the formatter would
// choke on the mismatched positonal spans between a parent and an injected child from another file).
return result === node ? setTextRange(context, factory.cloneNode(result), node) : result;
return result ? setTextRange(context, result, node) : undefined;
}

function createRecoveryBoundary() {
Expand Down Expand Up @@ -8769,7 +8783,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
|| (isPropertySignature(node) && !node.type && !node.initializer)
|| (isParameter(node) && !node.type && !node.initializer)
) {
let visited = visitEachChild(node, visitExistingNodeTreeSymbols, /*context*/ undefined);
let visited = visitEachChild(node, visitExistingNodeTreeSymbols);
if (visited === node) {
visited = setTextRange(context, factory.cloneNode(node), node);
}
Expand Down Expand Up @@ -8831,7 +8845,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
}

if (isTupleTypeNode(node) || isTypeLiteralNode(node) || isMappedTypeNode(node)) {
const visited = visitEachChild(node, visitExistingNodeTreeSymbols, /*context*/ undefined);
const visited = visitEachChild(node, visitExistingNodeTreeSymbols);
const clone = setTextRange(context, visited === node ? factory.cloneNode(node) : visited, node);
const flags = getEmitFlags(clone);
setEmitFlags(clone, flags | (context.flags & NodeBuilderFlags.MultilineObjectLiterals && isTypeLiteralNode(node) ? 0 : EmitFlags.SingleLine));
Expand Down Expand Up @@ -8878,7 +8892,33 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
}
}

return visitEachChild(node, visitExistingNodeTreeSymbols, /*context*/ undefined);
return visitEachChild(node, visitExistingNodeTreeSymbols);

function visitEachChild<T extends Node>(node: T, visitor: Visitor): T;
function visitEachChild<T extends Node>(node: T | undefined, visitor: Visitor): T | undefined;
function visitEachChild<T extends Node>(node: T | undefined, visitor: Visitor): T | undefined {
const nonlocalNode = !context.enclosingFile || context.enclosingFile !== getSourceFileOfNode(node);
return visitEachChildWorker(node, visitor, /*context*/ undefined, nonlocalNode ? visitNodesWithoutCopyingPositions : undefined);
}

function visitNodesWithoutCopyingPositions(
nodes: NodeArray<Node> | undefined,
visitor: Visitor,
test?: (node: Node) => boolean,
start?: number,
count?: number,
): NodeArray<Node> | undefined {
let result = visitNodes(nodes, visitor, test, start, count);
if (result) {
if (result.pos !== -1 || result.end !== -1) {
if (result === nodes) {
result = factory.createNodeArray(nodes, nodes.hasTrailingComma);
}
setTextRangePosEnd(result, -1, -1);
}
}
return result;
}

function getEffectiveDotDotDotForParameter(p: ParameterDeclaration) {
return p.dotDotDotToken || (p.type && isJSDocVariadicType(p.type) ? factory.createToken(SyntaxKind.DotDotDotToken) : undefined);
Expand Down
4 changes: 2 additions & 2 deletions tests/baselines/reference/2dArrays.types
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Expand Up @@ -35,15 +35,15 @@ class Board {
>this.ships.every(function (val) { return val.isSunk; }) : boolean
> : ^^^^^^^
>this.ships.every : { <S extends Ship>(predicate: (value: Ship, index: number, array: Ship[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: Ship, index: number, array: Ship[]) => unknown, thisArg?: any): boolean; }
> : ^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^
> : ^^^ ^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^
>this.ships : Ship[]
> : ^^^^^^
>this : this
> : ^^^^
>ships : Ship[]
> : ^^^^^^
>every : { <S extends Ship>(predicate: (value: Ship, index: number, array: Ship[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: Ship, index: number, array: Ship[]) => unknown, thisArg?: any): boolean; }
> : ^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^
> : ^^^ ^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^
>function (val) { return val.isSunk; } : (val: Ship) => boolean
> : ^ ^^^^^^^^^^^^^^^^^^
>val : Ship
Expand Down
6 changes: 3 additions & 3 deletions tests/baselines/reference/FunctionPropertyAssignments6_es6.types
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Expand Up @@ -3,9 +3,9 @@
=== FunctionPropertyAssignments6_es6.ts ===
var v = { *<T>() { } }
>v : { ""<T>(): Generator<never, void, unknown>; }
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> : ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>{ *<T>() { } } : { ""<T>(): Generator<never, void, unknown>; }
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> : ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> : <T>() => Generator<never, void, unknown>
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> : ^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

2 changes: 1 addition & 1 deletion tests/baselines/reference/MemberFunctionDeclaration7_es6.types
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Expand Up @@ -7,5 +7,5 @@ class C {

*foo<T>() { }
>foo : <T>() => Generator<never, void, unknown>
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> : ^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
}
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