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[SourceKit] When Cursor infor resolves to the start of an expression, we always get the outermost expression. (#10738)

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The reason is that for clients, getting the offspring of an expression is
much easier that getting parents.
This commit is contained in:
Xi Ge
2017-06-30 17:57:36 -07:00
committed by GitHub
parent a184a6c955
commit e1a4bf32dd
2 changed files with 11 additions and 10 deletions
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19
lib/IDE/SwiftSourceDocInfo.cpp
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@@ -108,14 +108,6 @@ bool SemaLocResolver::tryResolve(Stmt *St) {
return false;
}
bool SemaLocResolver::tryResolve(Expr *Exp) {
if (!Exp->isImplicit() && Exp->getStartLoc() == LocToResolve) {
SemaTok = { Exp };
return true;
}
return false;
}
bool SemaLocResolver::visitSubscriptReference(ValueDecl *D, CharSourceRange Range,
bool IsOpenBracket) {
// We should treat both open and close brackets equally
@@ -193,6 +185,10 @@ bool SemaLocResolver::walkToExprPre(Expr *E) {
ContainerType = ME->getBase()->getType();
}
}
// Keep track of trailing expressions.
if (!E->isImplicit() && E->getStartLoc() == LocToResolve)
TrailingExprStack.push_back(E);
}
return true;
}
@@ -200,7 +196,12 @@ bool SemaLocResolver::walkToExprPre(Expr *E) {
bool SemaLocResolver::walkToExprPost(Expr *E) {
if (isDone())
return false;
return !tryResolve(E);
if (!TrailingExprStack.empty() && TrailingExprStack.back() == E) {
// We return the outtermost expression in the token info.
SemaTok = { TrailingExprStack.front() };
return false;
}
return true;
}
bool SemaLocResolver::visitCallArgName(Identifier Name, CharSourceRange Range,