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[Diagnostics] Remove obsolete FailureDiagnosis::visitIdentityExpr from CSDiag #29413

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Merged
merged 1 commit into from
Jan 24, 2020
Merged

[Diagnostics] Remove obsolete FailureDiagnosis::visitIdentityExpr from CSDiag #29413

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16 changes: 0 additions & 16 deletions lib/Sema/CSDiag.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -221,7 +221,6 @@ class FailureDiagnosis :public ASTVisitor<FailureDiagnosis, /*exprresult*/bool>{
validateContextualType(Type contextualType, ContextualTypePurpose CTP);

bool visitExpr(Expr *E);
bool visitIdentityExpr(IdentityExpr *E);
bool visitTryExpr(TryExpr *E);

bool visitApplyExpr(ApplyExpr *AE);
Expand Down Expand Up @@ -1582,21 +1581,6 @@ visitRebindSelfInConstructorExpr(RebindSelfInConstructorExpr *E) {
return false;
}

/// An IdentityExpr doesn't change its argument, but it *can* propagate its
/// contextual type information down.
bool FailureDiagnosis::visitIdentityExpr(IdentityExpr *E) {
auto contextualType = CS.getContextualType(E);

// If we have a paren expr and our contextual type is a ParenType, remove the
// paren expr sugar.
if (contextualType)
contextualType = contextualType->getWithoutParens();
if (!typeCheckChildIndependently(E->getSubExpr(), contextualType,
CS.getContextualTypePurpose(E)))
return true;
return false;
}

/// A TryExpr doesn't change it's argument, nor does it change the contextual
/// type.
bool FailureDiagnosis::visitTryExpr(TryExpr *E) {
Expand Down