Adding EchoCommand and associated printer and parser rules:

* SMT-LIBv2 parser now supports (echo...).
* Dump() gestures can now dump EchoCommands in CVC and SMT-LIB formats.
  This can make it much easier to interpret output.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/expr/command.h b/src/expr/command.h
index a6f22fe20..19d1f16e7 100644
--- a/src/expr/command.h
+++ b/src/expr/command.h
@@ -264,6 +264,19 @@ public:
   Command* clone() const;
 };/* class EmptyCommand */
 
+class CVC4_PUBLIC EchoCommand : public Command {
+protected:
+  std::string d_output;
+public:
+  EchoCommand(std::string output = "") throw();
+  ~EchoCommand() throw() {}
+  std::string getOutput() const throw();
+  void invoke(SmtEngine* smtEngine) throw();
+  void invoke(SmtEngine* smtEngine, std::ostream& out) throw();
+  Command* exportTo(ExprManager* exprManager, ExprManagerMapCollection& variableMap);
+  Command* clone() const;
+};/* class EchoCommand */
+
 class CVC4_PUBLIC AssertCommand : public Command {
 protected:
   BoolExpr d_expr;