Parsing and infrastructure support for SMT-LIBv2.5 input and output languages.

* support for new commands meta-info, declare-const, echo, get-model,
  reset, and reset-assertions
* support for set-option :global-declarations
* support for set-option :produce-assertions
* support for set-option :reproducible-resource-limit
* support for get-info :assertion-stack-levels
* support for set-info :smt-lib-version 2.5
* ascribe types for abstract values (the new 2.5 standard clarifies that
  this is required)
* SMT-LIB v2.5 string literals (we still support 2.0 string literals when
  in 2.0 mode)

What's still to do:
* check-sat-assumptions/get-unsat-assumptions (still being hotly debated).
  Also set-option :produce-unsat-assumptions.
* define-fun-rec doesn't allow mutual recursion
* All options should be restored to defaults with (reset) command.
  (Currently :incremental and maybe others get "stuck" due to late driver
  integration.)

1 files changed, 18 insertions, 0 deletions

diff --git a/src/parser/smt2/smt2.cpp b/src/parser/smt2/smt2.cpp
index 21b6a1e5b..62814ca25 100644
--- a/src/parser/smt2/smt2.cpp
+++ b/src/parser/smt2/smt2.cpp
@@ -233,6 +233,24 @@ bool Smt2::logicIsSet() {
   return d_logicSet;
 }
 
+void Smt2::reset() {
+  d_logicSet = false;
+  d_logic = LogicInfo();
+  operatorKindMap.clear();
+  d_lastNamedTerm = std::pair<Expr, std::string>();
+  d_unsatCoreNames = std::stack< std::map<Expr, std::string> >();
+  this->Parser::reset();
+
+  d_unsatCoreNames.push(std::map<Expr, std::string>());
+  if( !strictModeEnabled() ) {
+    addTheory(Smt2::THEORY_CORE);
+  }
+}
+
+void Smt2::resetAssertions() {
+  this->Parser::reset();
+}
+
 void Smt2::setLogic(const std::string& name) {
   d_logicSet = true;
   if(logicIsForced()) {