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add eval feature #1553

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-03-23 16:26:20 -07:00
parent 705439cb85
commit 966a8f73d3
3 changed files with 41 additions and 0 deletions
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3
src/api/api_context.h
View file

@ -34,6 +34,7 @@ Revision History:
#include "util/event_handler.h"
#include "cmd_context/tactic_manager.h"
#include "cmd_context/context_params.h"
#include "cmd_context/cmd_context.h"
#include "api/api_polynomial.h"
#include "util/hashtable.h"
@ -53,6 +54,7 @@ namespace api {
context_params m_params;
bool m_user_ref_count; //!< if true, the user is responsible for managing reference counters.
scoped_ptr<ast_manager> m_manager;
scoped_ptr<cmd_context> m_cmd;
add_plugins m_plugins;
arith_util m_arith_util;
@ -114,6 +116,7 @@ namespace api {
ast_manager & m() const { return *(m_manager.get()); }
context_params & params() { return m_params; }
scoped_ptr<cmd_context>& cmd() { return m_cmd; }
bool produce_proofs() const { return m().proofs_enabled(); }
bool produce_models() const { return m_params.m_model; }
bool produce_unsat_cores() const { return m_params.m_unsat_core; }

27
src/api/api_parsers.cpp
View file

@ -117,4 +117,31 @@ extern "C" {
RETURN_Z3(r);
Z3_CATCH_RETURN(nullptr);
}
Z3_string Z3_API Z3_eval_smtlib2_string(Z3_context c, Z3_string str) {
Z3_TRY;
LOG_Z3_eval_smtlib2_string(c, str);
if (!mk_c(c)->cmd()) {
mk_c(c)->cmd() = alloc(cmd_context, false, &(mk_c(c)->m()));
}
scoped_ptr<cmd_context>& ctx = mk_c(c)->cmd();
std::string s(str);
std::istringstream is(s);
std::stringstream ous;
ctx->set_regular_stream(ous);
try {
if (!parse_smt2_commands(*ctx.get(), is)) {
mk_c(c)->m_parser_error_buffer = ous.str();
SET_ERROR_CODE(Z3_PARSER_ERROR);
RETURN_Z3(nullptr);
}
}
catch (z3_exception& e) {
mk_c(c)->m_parser_error_buffer = e.msg();
SET_ERROR_CODE(Z3_PARSER_ERROR);
RETURN_Z3(nullptr);
}
RETURN_Z3(mk_c(c)->mk_external_string(ous.str()));
Z3_CATCH_RETURN(nullptr);
}
};

11
src/api/z3_api.h
View file

@ -5209,6 +5209,17 @@ extern "C" {
Z3_func_decl const decls[]);
/**
\brief Parse and evaluate and SMT-LIB2 command sequence. The state from a previous call is saved so the next
evaluation builds on top of the previous call.
\returns output generated from processing commands.
def_API('Z3_eval_smtlib2_string', STRING, (_in(CONTEXT), _in(STRING),))
*/
Z3_string Z3_API Z3_eval_smtlib2_string(Z3_context, Z3_string str);
/**
\brief Retrieve that last error message information generated from parsing.