Add comments and make some nit changes based on PR feedback

This commit is contained in:
Sheetal Nandi 2018-03-09 13:57:57 -08:00
parent e1a89e7011
commit 73947f8990

View file

@ -913,6 +913,11 @@ namespace ts {
}
export function isPossiblyTypeArgumentPosition(token: Node, sourceFile: SourceFile) {
// This function determines if the node could be type argument position
// Since during editing, when type argument list is not complete,
// the tree could be of any shape depending on the tokens parsed before current node,
// scanning of the previous identifier followed by "<" before current node would give us better result
// Note that we also balance out the already provided type arguments, arrays, object literals while doing so
let remainingLessThanTokens = 0;
while (token) {
switch (token.kind) {
@ -927,11 +932,13 @@ namespace ts {
break;
case SyntaxKind.GreaterThanGreaterThanGreaterThanToken:
remainingLessThanTokens++;
// falls through
remainingLessThanTokens = + 3;
break;
case SyntaxKind.GreaterThanGreaterThanToken:
remainingLessThanTokens++;
// falls through
remainingLessThanTokens = + 2;
break;
case SyntaxKind.GreaterThanToken:
remainingLessThanTokens++;
break;
@ -991,7 +998,6 @@ namespace ts {
return false;
}
/**
* Returns true if the cursor at position in sourceFile is within a comment.
*