More useful error message when someone tries mkExpr(VARIABLE).

diff --git a/src/expr/expr_manager_template.cpp b/src/expr/expr_manager_template.cpp
index c733e37eaf50278fa1cb13cc977408176e6584d7..147ad3723f7b83ac11a8aaafb7b4b1031dbf1a46 100644 (file)
--- a/src/expr/expr_manager_template.cpp
+++ b/src/expr/expr_manager_template.cpp
@@ -153,7 +153,13 @@ IntegerType ExprManager::integerType() const {
 }
 
 Expr ExprManager::mkExpr(Kind kind, Expr child1) {
-  const unsigned n = 1 - (kind::metaKindOf(kind) == kind::metakind::PARAMETERIZED ? 1 : 0);
+  const kind::MetaKind mk = kind::metaKindOf(kind);
+  const unsigned n = 1 - (mk == kind::metakind::PARAMETERIZED ? 1 : 0);
+  CheckArgument(mk == kind::metakind::PARAMETERIZED ||
+                mk == kind::metakind::OPERATOR, kind,
+                "Only operator-style expressions are made with mkExpr(); "
+                "to make variables and constants, see mkVar(), mkBoundVar(), "
+                "and mkConst().");
   CheckArgument(n >= minArity(kind) && n <= maxArity(kind), kind,
                 "Exprs with kind %s must have at least %u children and "
                 "at most %u children (the one under construction has %u)",
@@ -169,7 +175,13 @@ Expr ExprManager::mkExpr(Kind kind, Expr child1) {
 }
 
 Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2) {
-  const unsigned n = 2 - (kind::metaKindOf(kind) == kind::metakind::PARAMETERIZED ? 1 : 0);
+  const kind::MetaKind mk = kind::metaKindOf(kind);
+  const unsigned n = 2 - (mk == kind::metakind::PARAMETERIZED ? 1 : 0);
+  CheckArgument(mk == kind::metakind::PARAMETERIZED ||
+                mk == kind::metakind::OPERATOR, kind,
+                "Only operator-style expressions are made with mkExpr(); "
+                "to make variables and constants, see mkVar(), mkBoundVar(), "
+                "and mkConst().");
   CheckArgument(n >= minArity(kind) && n <= maxArity(kind), kind,
                 "Exprs with kind %s must have at least %u children and "
                 "at most %u children (the one under construction has %u)",
@@ -186,9 +198,14 @@ Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2) {
   }
 }
 
-Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2,
-                         Expr child3) {
-  const unsigned n = 3 - (kind::metaKindOf(kind) == kind::metakind::PARAMETERIZED ? 1 : 0);
+Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2, Expr child3) {
+  const kind::MetaKind mk = kind::metaKindOf(kind);
+  const unsigned n = 3 - (mk == kind::metakind::PARAMETERIZED ? 1 : 0);
+  CheckArgument(mk == kind::metakind::PARAMETERIZED ||
+                mk == kind::metakind::OPERATOR, kind,
+                "Only operator-style expressions are made with mkExpr(); "
+                "to make variables and constants, see mkVar(), mkBoundVar(), "
+                "and mkConst().");
   CheckArgument(n >= minArity(kind) && n <= maxArity(kind), kind,
                 "Exprs with kind %s must have at least %u children and "
                 "at most %u children (the one under construction has %u)",
@@ -206,9 +223,15 @@ Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2,
   }
 }
 
-Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2,
-                         Expr child3, Expr child4) {
-  const unsigned n = 4 - (kind::metaKindOf(kind) == kind::metakind::PARAMETERIZED ? 1 : 0);
+Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2, Expr child3,
+                         Expr child4) {
+  const kind::MetaKind mk = kind::metaKindOf(kind);
+  const unsigned n = 4 - (mk == kind::metakind::PARAMETERIZED ? 1 : 0);
+  CheckArgument(mk == kind::metakind::PARAMETERIZED ||
+                mk == kind::metakind::OPERATOR, kind,
+                "Only operator-style expressions are made with mkExpr(); "
+                "to make variables and constants, see mkVar(), mkBoundVar(), "
+                "and mkConst().");
   CheckArgument(n >= minArity(kind) && n <= maxArity(kind), kind,
                 "Exprs with kind %s must have at least %u children and "
                 "at most %u children (the one under construction has %u)",
@@ -227,10 +250,15 @@ Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2,
   }
 }
 
-Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2,
-                         Expr child3, Expr child4,
-                         Expr child5) {
-  const unsigned n = 5 - (kind::metaKindOf(kind) == kind::metakind::PARAMETERIZED ? 1 : 0);
+Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2, Expr child3,
+                         Expr child4, Expr child5) {
+  const kind::MetaKind mk = kind::metaKindOf(kind);
+  const unsigned n = 5 - (mk == kind::metakind::PARAMETERIZED ? 1 : 0);
+  CheckArgument(mk == kind::metakind::PARAMETERIZED ||
+                mk == kind::metakind::OPERATOR, kind,
+                "Only operator-style expressions are made with mkExpr(); "
+                "to make variables and constants, see mkVar(), mkBoundVar(), "
+                "and mkConst().");
   CheckArgument(n >= minArity(kind) && n <= maxArity(kind), kind,
                 "Exprs with kind %s must have at least %u children and "
                 "at most %u children (the one under construction has %u)",
@@ -251,7 +279,13 @@ Expr ExprManager::mkExpr(Kind kind, Expr child1, Expr child2,
 }
 
 Expr ExprManager::mkExpr(Kind kind, const std::vector<Expr>& children) {
-  const unsigned n = children.size() - (kind::metaKindOf(kind) == kind::metakind::PARAMETERIZED ? 1 : 0);
+  const kind::MetaKind mk = kind::metaKindOf(kind);
+  const unsigned n = children.size() - (mk == kind::metakind::PARAMETERIZED ? 1 : 0);
+  CheckArgument(mk == kind::metakind::PARAMETERIZED ||
+                mk == kind::metakind::OPERATOR, kind,
+                "Only operator-style expressions are made with mkExpr(); "
+                "to make variables and constants, see mkVar(), mkBoundVar(), "
+                "and mkConst().");
   CheckArgument(n >= minArity(kind) && n <= maxArity(kind), kind,
                 "Exprs with kind %s must have at least %u children and "
                 "at most %u children (the one under construction has %u)",
@@ -275,8 +309,15 @@ Expr ExprManager::mkExpr(Kind kind, const std::vector<Expr>& children) {
   }
 }
 
-Expr ExprManager::mkExpr(Kind kind, Expr child1, const std::vector<Expr>& otherChildren) {
-  const unsigned n = otherChildren.size() - (kind::metaKindOf(kind) == kind::metakind::PARAMETERIZED ? 1 : 0) + 1;
+Expr ExprManager::mkExpr(Kind kind, Expr child1,
+                         const std::vector<Expr>& otherChildren) {
+  const kind::MetaKind mk = kind::metaKindOf(kind);
+  const unsigned n = otherChildren.size() - (mk == kind::metakind::PARAMETERIZED ? 1 : 0) + 1;
+  CheckArgument(mk == kind::metakind::PARAMETERIZED ||
+                mk == kind::metakind::OPERATOR, kind,
+                "Only operator-style expressions are made with mkExpr(); "
+                "to make variables and constants, see mkVar(), mkBoundVar(), "
+                "and mkConst().");
   CheckArgument(n >= minArity(kind) && n <= maxArity(kind), kind,
                 "Exprs with kind %s must have at least %u children and "
                 "at most %u children (the one under construction has %u)",