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Modify debug assertion to avoid crashing on SyntaxList (#47500)

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Jake Bailey 2022-01-19 13:37:55 -08:00 committed by GitHub
parent 818962087c
commit 049d4e049f
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2 changed files with 15 additions and 5 deletions
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12
src/services/utilities.ts
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@ -1297,7 +1297,7 @@ namespace ts {
if (lookInPreviousChild) {
// actual start of the node is past the position - previous token should be at the end of previous child
const candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile);
const candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile, n.kind);
return candidate && findRightmostToken(candidate, sourceFile);
}
else {
@ -1313,7 +1313,7 @@ namespace ts {
// the only known case is when position is at the end of the file.
// Try to find the rightmost token in the file without filtering.
// Namely we are skipping the check: 'position < node.end'
const candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
const candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
return candidate && findRightmostToken(candidate, sourceFile);
}
}
@ -1332,19 +1332,21 @@ namespace ts {
return n;
}
const candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
const candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
return candidate && findRightmostToken(candidate, sourceFile);
}
/**
* Finds the rightmost child to the left of `children[exclusiveStartPosition]` which is a non-all-whitespace token or has constituent tokens.
*/
function findRightmostChildNodeWithTokens(children: Node[], exclusiveStartPosition: number, sourceFile: SourceFile): Node | undefined {
function findRightmostChildNodeWithTokens(children: Node[], exclusiveStartPosition: number, sourceFile: SourceFile, parentKind: SyntaxKind): Node | undefined {
for (let i = exclusiveStartPosition - 1; i >= 0; i--) {
const child = children[i];
if (isWhiteSpaceOnlyJsxText(child)) {
Debug.assert(i > 0, "`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
if (i === 0 && (parentKind === SyntaxKind.JsxText || parentKind === SyntaxKind.JsxSelfClosingElement)) {
Debug.fail("`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
}
}
else if (nodeHasTokens(children[i], sourceFile)) {
return children[i];

8
tests/cases/fourslash/quickInfoOnClosingJsx.ts Normal file
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@ -0,0 +1,8 @@
/// <reference path="fourslash.ts" />
// @Filename: foo.tsx
////let x = <div>
//// /*$*/</div >
goTo.marker("$");
verify.not.quickInfoExists();