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Expr method to invert the sense of a relational

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This commit is contained in:
Vern Paxson 2021-05-30 17:31:22 -07:00
parent b1e95d68e0
commit 4ee8bd0082
2 changed files with 31 additions and 0 deletions
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7
src/Expr.h
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@ -197,6 +197,11 @@ public:
// the current value of expr (this is the default method).
virtual ExprPtr MakeLvalue();
// Invert the sense of the operation. Returns true if the expression
// was invertible (currently only true for relational/equality
// expressions), false otherwise.
virtual bool InvertSense();
// Marks the expression as one requiring (or at least appearing
// with) parentheses. Used for pretty-printing.
void MarkParen() { paren = true; }
@ -791,6 +796,7 @@ public:
ExprPtr Duplicate() override;
bool WillTransform(Reducer* c) const override;
ExprPtr Reduce(Reducer* c, StmtPtr& red_stmt) override;
bool InvertSense() override;
protected:
ValPtr Fold(Val* v1, Val* v2) const override;
@ -805,6 +811,7 @@ public:
ExprPtr Duplicate() override;
bool WillTransform(Reducer* c) const override;
ExprPtr Reduce(Reducer* c, StmtPtr& red_stmt) override;
bool InvertSense() override;
};
class CondExpr final : public Expr {