Head

GCC Code Coverage Report

Directory:	.		Exec	Total	Coverage
File:	src/parser/tptp/tptp.cpp	Lines:	211	261	80.8 %
Date:	2021-05-24	Branches:	296	804	36.8 %


/******************************************************************************
 * Top contributors (to current version):
 *   Andrew Reynolds, Francois Bobot, Haniel Barbosa
 *
 * This file is part of the cvc5 project.
 *
 * Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
 * in the top-level source directory and their institutional affiliations.
 * All rights reserved.  See the file COPYING in the top-level source
 * directory for licensing information.
 * ****************************************************************************
 *
 * Definition of TPTP parser.
 */

// Do not #include "parser/antlr_input.h" directly. Rely on the header.
#include "parser/tptp/tptp.h"

#include <algorithm>
#include <set>

#include "api/cpp/cvc5.h"
#include "base/check.h"
#include "options/options.h"
#include "parser/parser.h"
#include "smt/command.h"

// ANTLR defines these, which is really bad!
#undef true
#undef false

namespace cvc5 {
namespace parser {

Tptp::Tptp(api::Solver* solver,
           SymbolManager* sm,
           bool strictMode,
           bool parseOnly)
    : Parser(solver, sm, strictMode, parseOnly), d_cnf(false), d_fof(false)
{
  addTheory(Tptp::THEORY_CORE);

  /* Try to find TPTP dir */
  // From tptp4x FileUtilities
  //----Try the TPTP directory, and TPTP variations
  char* home = getenv("TPTP");
  if(home == NULL) {
     home = getenv("TPTP_HOME");
// //----If no TPTP_HOME, try the tptp user (aaargh)
//         if(home == NULL && (PasswdEntry = getpwnam("tptp")) != NULL) {
//            home = PasswdEntry->pw_dir;
//         }
//----Now look in the TPTP directory from there
    if(home != NULL) {
      d_tptpDir = home;
      d_tptpDir.append("/TPTP/");
    }
  } else {
    d_tptpDir = home;
    //add trailing "/"
    if(d_tptpDir[d_tptpDir.size() - 1] != '/') {
      d_tptpDir.append("/");
    }
  }
  d_hasConjecture = false;
}

Tptp::~Tptp() {
  for( unsigned i=0; i<d_in_created.size(); i++ ){
    d_in_created[i]->free(d_in_created[i]);
  }
}

void Tptp::addTheory(Theory theory) {
  switch(theory) {
  case THEORY_CORE:
    //TPTP (CNF and FOF) is unsorted so we define this common type
    {
      std::string d_unsorted_name = "$$unsorted";
      d_unsorted = d_solver->mkUninterpretedSort(d_unsorted_name);
      preemptCommand(new DeclareSortCommand(d_unsorted_name, 0, d_unsorted));
    }
    // propositionnal
    defineType("Bool", d_solver->getBooleanSort());
    defineVar("$true", d_solver->mkTrue());
    defineVar("$false", d_solver->mkFalse());
    addOperator(api::AND);
    addOperator(api::EQUAL);
    addOperator(api::IMPLIES);
    // addOperator(api::ITE); //only for tff thf
    addOperator(api::NOT);
    addOperator(api::OR);
    addOperator(api::XOR);
    addOperator(api::APPLY_UF);
    //Add quantifiers?
    break;

  default:
    std::stringstream ss;
    ss << "internal error: Tptp::addTheory(): unhandled theory " << theory;
    throw ParserException(ss.str());
  }
}


/* The include are managed in the lexer but called in the parser */
// Inspired by http://www.antlr3.org/api/C/interop.html

bool newInputStream(std::string fileName, pANTLR3_LEXER lexer, std::vector< pANTLR3_INPUT_STREAM >& inc ) {
  Debug("parser") << "Including " << fileName << std::endl;
  // Create a new input stream and take advantage of built in stream stacking
  // in C target runtime.
  //
  pANTLR3_INPUT_STREAM    in;
#ifdef CVC5_ANTLR3_OLD_INPUT_STREAM
  in = antlr3AsciiFileStreamNew((pANTLR3_UINT8) fileName.c_str());
#else  /* CVC5_ANTLR3_OLD_INPUT_STREAM */
  in = antlr3FileStreamNew((pANTLR3_UINT8) fileName.c_str(), ANTLR3_ENC_8BIT);
#endif /* CVC5_ANTLR3_OLD_INPUT_STREAM */
  if(in == NULL) {
    Debug("parser") << "Can't open " << fileName << std::endl;
    return false;
  }
  // Same thing as the predefined PUSHSTREAM(in);
  lexer->pushCharStream(lexer,in);
  // restart it
  //lexer->rec->state->tokenStartCharIndex  = -10;
  //lexer->emit(lexer);

  // Note that the input stream is not closed when it EOFs, I don't bother
  // to do it here, but it is up to you to track streams created like this
  // and destroy them when the whole parse session is complete. Remember that you
  // don't want to do this until all tokens have been manipulated all the way through
  // your tree parsers etc as the token does not store the text it just refers
  // back to the input stream and trying to get the text for it will abort if you
  // close the input stream too early.
  //
  inc.push_back( in );

  //TODO what said before
  return true;
}

void Tptp::includeFile(std::string fileName) {
  // security for online version
  if(!canIncludeFile()) {
    parseError("include-file feature was disabled for this run.");
  }

  // Get the lexer
  AntlrInput * ai = static_cast<AntlrInput *>(getInput());
  pANTLR3_LEXER lexer = ai->getAntlr3Lexer();

  // push the inclusion scope; will be popped by our special popCharStream
  // would be necessary for handling symbol filtering in inclusions
  //pushScope();

  // get the name of the current stream "Does it work inside an include?"
  const std::string inputName = ai->getInputStreamName();

  // Test in the directory of the actual parsed file
  std::string currentDirFileName;
  if(inputName != "<stdin>") {
    // TODO: Use dirname or Boost::filesystem?
    size_t pos = inputName.rfind('/');
    if(pos != std::string::npos) {
      currentDirFileName = std::string(inputName, 0, pos + 1);
    }
    currentDirFileName.append(fileName);
    if(newInputStream(currentDirFileName,lexer, d_in_created)) {
      return;
    }
  } else {
    currentDirFileName = "<unknown current directory for stdin>";
  }

  if(d_tptpDir.empty()) {
    parseError("Couldn't open included file: " + fileName
               + " at " + currentDirFileName + " and the TPTP directory is not specified (environment variable TPTP)");
  };

  std::string tptpDirFileName = d_tptpDir + fileName;
  if(! newInputStream(tptpDirFileName,lexer, d_in_created)) {
    parseError("Couldn't open included file: " + fileName
               + " at " + currentDirFileName + " or " + tptpDirFileName);
  }
}

void Tptp::checkLetBinding(const std::vector<api::Term>& bvlist,
                           api::Term lhs,
                           api::Term rhs,
                           bool formula)
{
  if (lhs.getKind() != api::APPLY_UF)
  {
    parseError("malformed let: LHS must be a flat function application");
  }
  const std::multiset<api::Term> vars{lhs.begin(), lhs.end()};
  if (formula && !lhs.getSort().isBoolean())
  {
    parseError("malformed let: LHS must be formula");
  }
  for (const cvc5::api::Term& var : vars)
  {
    if (var.hasOp())
    {
      parseError("malformed let: LHS must be flat, illegal child: " +
                 var.toString());
    }
  }

  // ensure all let-bound variables appear on the LHS, and appear only once
  for (const api::Term& bound_var : bvlist)
  {
    const size_t count = vars.count(bound_var);
    if (count == 0) {
      parseError(
          "malformed let: LHS must make use of all quantified variables, "
          "missing `" +
          bound_var.toString() + "'");
    } else if (count >= 2) {
      parseError("malformed let: LHS cannot use same bound variable twice: " +
                 bound_var.toString());
    }
  }
}

api::Term Tptp::parseOpToExpr(ParseOp& p)
{
  api::Term expr;
  if (!p.d_expr.isNull())
  {
    return p.d_expr;
  }
  // if it has a kind, it's a builtin one and this function should not have been
  // called
  Assert(p.d_kind == api::NULL_EXPR);
  if (isDeclared(p.d_name))
  {  // already appeared
    expr = getVariable(p.d_name);
  }
  else
  {
    api::Sort t =
        p.d_type == d_solver->getBooleanSort() ? p.d_type : d_unsorted;
    expr = bindVar(p.d_name, t, true);  // must define at level zero
    preemptCommand(new DeclareFunctionCommand(p.d_name, expr, t));
  }
  return expr;
}

api::Term Tptp::applyParseOp(ParseOp& p, std::vector<api::Term>& args)
{
  if (Debug.isOn("parser"))
  {
    Debug("parser") << "applyParseOp: " << p << " to:" << std::endl;
    for (std::vector<api::Term>::iterator i = args.begin(); i != args.end();
         ++i)
    {
      Debug("parser") << "++ " << *i << std::endl;
    }
  }
  Assert(!args.empty());
  // If operator already defined, just build application
  if (!p.d_expr.isNull())
  {
    // this happens with some arithmetic kinds, which are wrapped around
    // lambdas.
    args.insert(args.begin(), p.d_expr);
    return d_solver->mkTerm(api::APPLY_UF, args);
  }
  bool isBuiltinKind = false;
  // the builtin kind of the overall return expression
  api::Kind kind = api::NULL_EXPR;
  // First phase: piece operator together
  if (p.d_kind == api::NULL_EXPR)
  {
    // A non-built-in function application, get the expression
    api::Term v;
    if (isDeclared(p.d_name))
    {  // already appeared
      v = getVariable(p.d_name);
    }
    else
    {
      std::vector<api::Sort> sorts(args.size(), d_unsorted);
      api::Sort t =
          p.d_type == d_solver->getBooleanSort() ? p.d_type : d_unsorted;
      t = d_solver->mkFunctionSort(sorts, t);
      v = bindVar(p.d_name, t, true);  // must define at level zero
      preemptCommand(new DeclareFunctionCommand(p.d_name, v, t));
    }
    // args might be rationals, in which case we need to create
    // distinct constants of the "unsorted" sort to represent them
    for (size_t i = 0; i < args.size(); ++i)
    {
      if (args[i].getSort().isReal()
          && v.getSort().getFunctionDomainSorts()[i] == d_unsorted)
      {
        args[i] = convertRatToUnsorted(args[i]);
      }
    }
    Assert(!v.isNull());
    checkFunctionLike(v);
    kind = getKindForFunction(v);
    args.insert(args.begin(), v);
  }
  else
  {
    kind = p.d_kind;
    isBuiltinKind = true;
  }
  Assert(kind != api::NULL_EXPR);
  const Options& opts = d_solver->getOptions();
  // Second phase: apply parse op to the arguments
  if (isBuiltinKind)
  {
    if (!opts.getUfHo() && (kind == api::EQUAL || kind == api::DISTINCT))
    {
      // need --uf-ho if these operators are applied over function args
      for (std::vector<api::Term>::iterator i = args.begin(); i != args.end();
           ++i)
      {
        if ((*i).getSort().isFunction())
        {
          parseError(
              "Cannot apply equalty to functions unless --uf-ho is set.");
        }
      }
    }
    if (!strictModeEnabled() && (kind == api::AND || kind == api::OR)
        && args.size() == 1)
    {
      // Unary AND/OR can be replaced with the argument.
      return args[0];
    }
    if (kind == api::MINUS && args.size() == 1)
    {
      return d_solver->mkTerm(api::UMINUS, args[0]);
    }
    if (kind == api::TO_REAL)
    {
      // If the type is real, this is a no-op. We require this special
      // case in the TPTP parser since TO_REAL is designed to match the
      // SMT-LIB operator, meaning it can only be applied to integers, whereas
      // the TPTP to_real / to_rat do not have the same semantics.
      api::Sort s = args[0].getSort();
      if (s.isReal())
      {
        return args[0];
      }
    }
    return d_solver->mkTerm(kind, args);
  }

  // check if partially applied function, in this case we use HO_APPLY
  if (args.size() >= 2)
  {
    api::Sort argt = args[0].getSort();
    if (argt.isFunction())
    {
      unsigned arity = argt.getFunctionArity();
      if (args.size() - 1 < arity)
      {
        if (!opts.getUfHo())
        {
          parseError("Cannot partially apply functions unless --uf-ho is set.");
        }
        Debug("parser") << "Partial application of " << args[0];
        Debug("parser") << " : #argTypes = " << arity;
        Debug("parser") << ", #args = " << args.size() - 1 << std::endl;
        // must curry the partial application
        return d_solver->mkTerm(api::HO_APPLY, args);
      }
    }
  }
  return d_solver->mkTerm(kind, args);
}

api::Term Tptp::mkDecimal(
    std::string& snum, std::string& sden, bool pos, size_t exp, bool posE)
{
  // the numerator and the denominator
  std::stringstream ssn;
  std::stringstream ssd;
  if (exp != 0)
  {
    if (posE)
    {
      // see if we need to pad zeros on the end, e.g. 1.2E5 ---> 120000
      if (exp >= sden.size())
      {
        ssn << snum << sden;
        for (size_t i = 0, nzero = (exp - sden.size()); i < nzero; i++)
        {
          ssn << "0";
        }
        ssd << "0";
      }
      else
      {
        ssn << snum << sden.substr(0, exp);
        ssd << sden.substr(exp);
      }
    }
    else
    {
      // see if we need to pad zeros on the beginning, e.g. 1.2E-5 ---> 0.000012
      if (exp >= snum.size())
      {
        ssn << "0";
        for (size_t i = 0, nzero = (exp - snum.size()); i < nzero; i++)
        {
          ssd << "0";
        }
        ssd << snum << sden;
      }
      else
      {
        ssn << snum.substr(0, exp);
        ssd << snum.substr(exp) << sden;
      }
    }
  }
  else
  {
    ssn << snum;
    ssd << sden;
  }
  std::stringstream ss;
  if (!pos)
  {
    ss << "-";
  }
  ss << ssn.str() << "." << ssd.str();
  return d_solver->mkReal(ss.str());
}

void Tptp::forceLogic(const std::string& logic)
{
  Parser::forceLogic(logic);
  preemptCommand(new SetBenchmarkLogicCommand(logic));
}

void Tptp::addFreeVar(api::Term var)
{
  Assert(cnf());
  d_freeVar.push_back(var);
}

std::vector<api::Term> Tptp::getFreeVar()
{
  Assert(cnf());
  std::vector<api::Term> r;
  r.swap(d_freeVar);
  return r;
}

api::Term Tptp::convertRatToUnsorted(api::Term expr)
{
  // Create the conversion function If they doesn't exists
  if (d_rtu_op.isNull()) {
    api::Sort t;
    // Conversion from rational to unsorted
    t = d_solver->mkFunctionSort(d_solver->getRealSort(), d_unsorted);
    d_rtu_op = d_solver->mkConst(t, "$$rtu");
    preemptCommand(new DeclareFunctionCommand("$$rtu", d_rtu_op, t));
    // Conversion from unsorted to rational
    t = d_solver->mkFunctionSort(d_unsorted, d_solver->getRealSort());
    d_utr_op = d_solver->mkConst(t, "$$utr");
    preemptCommand(new DeclareFunctionCommand("$$utr", d_utr_op, t));
  }
  // Add the inverse in order to show that over the elements that
  // appear in the problem there is a bijection between unsorted and
  // rational
  api::Term ret = d_solver->mkTerm(api::APPLY_UF, d_rtu_op, expr);
  if (d_r_converted.find(expr) == d_r_converted.end()) {
    d_r_converted.insert(expr);
    api::Term eq = d_solver->mkTerm(
        api::EQUAL, expr, d_solver->mkTerm(api::APPLY_UF, d_utr_op, ret));
    preemptCommand(new AssertCommand(eq));
  }
  return api::Term(ret);
}

api::Term Tptp::convertStrToUnsorted(std::string str)
{
  api::Term& e = d_distinct_objects[str];
  if (e.isNull())
  {
    e = d_solver->mkConst(d_unsorted, str);
  }
  return e;
}

api::Term Tptp::mkLambdaWrapper(api::Kind k, api::Sort argType)
{
  Debug("parser") << "mkLambdaWrapper: kind " << k << " and type " << argType
                  << "\n";
  std::vector<api::Term> lvars;
  std::vector<api::Sort> domainTypes = argType.getFunctionDomainSorts();
  for (unsigned i = 0, size = domainTypes.size(); i < size; ++i)
  {
    // the introduced variable is internal (not parsable)
    std::stringstream ss;
    ss << "_lvar_" << i;
    api::Term v = d_solver->mkVar(domainTypes[i], ss.str());
    lvars.push_back(v);
  }
  // apply body of lambda to variables
  api::Term wrapper =
      d_solver->mkTerm(api::LAMBDA,
                       d_solver->mkTerm(api::BOUND_VAR_LIST, lvars),
                       d_solver->mkTerm(k, lvars));

  return wrapper;
}

api::Term Tptp::getAssertionExpr(FormulaRole fr, api::Term expr)
{
  switch (fr) {
    case FR_AXIOM:
    case FR_HYPOTHESIS:
    case FR_DEFINITION:
    case FR_ASSUMPTION:
    case FR_LEMMA:
    case FR_THEOREM:
    case FR_NEGATED_CONJECTURE:
    case FR_PLAIN:
      // it's a usual assert
      return expr;
    case FR_CONJECTURE:
      // it should be negated when asserted
      return d_solver->mkTerm(api::NOT, expr);
    case FR_UNKNOWN:
    case FR_FI_DOMAIN:
    case FR_FI_FUNCTORS:
    case FR_FI_PREDICATES:
    case FR_TYPE:
      // it does not correspond to an assertion
      return d_nullExpr;
      break;
  }
  Assert(false);  // unreachable
  return d_nullExpr;
}

api::Term Tptp::getAssertionDistinctConstants()
{
  std::vector<api::Term> constants;
  for (std::pair<const std::string, api::Term>& cs : d_distinct_objects)
  {
    constants.push_back(cs.second);
  }
  if (constants.size() > 1)
  {
    return d_solver->mkTerm(api::DISTINCT, constants);
  }
  return d_nullExpr;
}

Command* Tptp::makeAssertCommand(FormulaRole fr,
                                 api::Term expr,
                                 bool cnf,
                                 bool inUnsatCore)
{
  // For SZS ontology compliance.
  // if we're in cnf() though, conjectures don't result in "Theorem" or
  // "CounterSatisfiable".
  if (!cnf && (fr == FR_NEGATED_CONJECTURE || fr == FR_CONJECTURE)) {
    d_hasConjecture = true;
    Assert(!expr.isNull());
  }
  if( expr.isNull() ){
    return new EmptyCommand("Untreated role for expression");
  }else{
    return new AssertCommand(expr, inUnsatCore);
  }
}

}  // namespace parser
}  // namespace cvc5


Generated by: GCOVR (Version 3.2)

Line	Exec	Source
1		/******************************************************************************
2		* Top contributors (to current version):
3		* Andrew Reynolds, Francois Bobot, Haniel Barbosa
4		*
5		* This file is part of the cvc5 project.
6		*
7		* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
8		* in the top-level source directory and their institutional affiliations.
9		* All rights reserved. See the file COPYING in the top-level source
10		* directory for licensing information.
11		* ****************************************************************************
12		*
13		* Definition of TPTP parser.
14		*/
15
16		// Do not #include "parser/antlr_input.h" directly. Rely on the header.
17		#include "parser/tptp/tptp.h"
18
19		#include <algorithm>
20		#include <set>
21
22		#include "api/cpp/cvc5.h"
23		#include "base/check.h"
24		#include "options/options.h"
25		#include "parser/parser.h"
26		#include "smt/command.h"
27
28		// ANTLR defines these, which is really bad!
29		#undef true
30		#undef false
31
32		namespace cvc5 {
33		namespace parser {
34
35	43	Tptp::Tptp(api::Solver* solver,
36		SymbolManager* sm,
37		bool strictMode,
38	43	bool parseOnly)
39	43	: Parser(solver, sm, strictMode, parseOnly), d_cnf(false), d_fof(false)
40		{
41	43	addTheory(Tptp::THEORY_CORE);
42
43		/* Try to find TPTP dir */
44		// From tptp4x FileUtilities
45		//----Try the TPTP directory, and TPTP variations
46	43	char* home = getenv("TPTP");
47	43	if(home == NULL) {
48	43	home = getenv("TPTP_HOME");
49		// //----If no TPTP_HOME, try the tptp user (aaargh)
50		// if(home == NULL && (PasswdEntry = getpwnam("tptp")) != NULL) {
51		// home = PasswdEntry->pw_dir;
52		// }
53		//----Now look in the TPTP directory from there
54	43	if(home != NULL) {
55		d_tptpDir = home;
56		d_tptpDir.append("/TPTP/");
57		}
58		} else {
59		d_tptpDir = home;
60		//add trailing "/"
61		if(d_tptpDir[d_tptpDir.size() - 1] != '/') {
62		d_tptpDir.append("/");
63		}
64		}
65	43	d_hasConjecture = false;
66	43	}
67
68	129	Tptp::~Tptp() {
69	50	for( unsigned i=0; i<d_in_created.size(); i++ ){
70	7	d_in_created[i]->free(d_in_created[i]);
71		}
72	86	}
73
74	43	void Tptp::addTheory(Theory theory) {
75	43	switch(theory) {
76	43	case THEORY_CORE:
77		//TPTP (CNF and FOF) is unsorted so we define this common type
78		{
79	86	std::string d_unsorted_name = "$$unsorted";
80	43	d_unsorted = d_solver->mkUninterpretedSort(d_unsorted_name);
81	86	preemptCommand(new DeclareSortCommand(d_unsorted_name, 0, d_unsorted));
82		}
83		// propositionnal
84	43	defineType("Bool", d_solver->getBooleanSort());
85	43	defineVar("$true", d_solver->mkTrue());
86	43	defineVar("$false", d_solver->mkFalse());
87	43	addOperator(api::AND);
88	43	addOperator(api::EQUAL);
89	43	addOperator(api::IMPLIES);
90		// addOperator(api::ITE); //only for tff thf
91	43	addOperator(api::NOT);
92	43	addOperator(api::OR);
93	43	addOperator(api::XOR);
94	43	addOperator(api::APPLY_UF);
95		//Add quantifiers?
96	43	break;
97
98		default:
99		std::stringstream ss;
100		ss << "internal error: Tptp::addTheory(): unhandled theory " << theory;
101		throw ParserException(ss.str());
102		}
103	43	}
104
105
106		/* The include are managed in the lexer but called in the parser */
107		// Inspired by http://www.antlr3.org/api/C/interop.html
108
109	7	bool newInputStream(std::string fileName, pANTLR3_LEXER lexer, std::vector< pANTLR3_INPUT_STREAM >& inc ) {
110	7	Debug("parser") << "Including " << fileName << std::endl;
111		// Create a new input stream and take advantage of built in stream stacking
112		// in C target runtime.
113		//
114		pANTLR3_INPUT_STREAM in;
115		#ifdef CVC5_ANTLR3_OLD_INPUT_STREAM
116		in = antlr3AsciiFileStreamNew((pANTLR3_UINT8) fileName.c_str());
117		#else /* CVC5_ANTLR3_OLD_INPUT_STREAM */
118	7	in = antlr3FileStreamNew((pANTLR3_UINT8) fileName.c_str(), ANTLR3_ENC_8BIT);
119		#endif /* CVC5_ANTLR3_OLD_INPUT_STREAM */
120	7	if(in == NULL) {
121		Debug("parser") << "Can't open " << fileName << std::endl;
122		return false;
123		}
124		// Same thing as the predefined PUSHSTREAM(in);
125	7	lexer->pushCharStream(lexer,in);
126		// restart it
127		//lexer->rec->state->tokenStartCharIndex = -10;
128		//lexer->emit(lexer);
129
130		// Note that the input stream is not closed when it EOFs, I don't bother
131		// to do it here, but it is up to you to track streams created like this
132		// and destroy them when the whole parse session is complete. Remember that you
133		// don't want to do this until all tokens have been manipulated all the way through
134		// your tree parsers etc as the token does not store the text it just refers
135		// back to the input stream and trying to get the text for it will abort if you
136		// close the input stream too early.
137		//
138	7	inc.push_back( in );
139
140		//TODO what said before
141	7	return true;
142		}
143
144	7	void Tptp::includeFile(std::string fileName) {
145		// security for online version
146	7	if(!canIncludeFile()) {
147		parseError("include-file feature was disabled for this run.");
148		}
149
150		// Get the lexer
151	7	AntlrInput * ai = static_cast<AntlrInput *>(getInput());
152	7	pANTLR3_LEXER lexer = ai->getAntlr3Lexer();
153
154		// push the inclusion scope; will be popped by our special popCharStream
155		// would be necessary for handling symbol filtering in inclusions
156		//pushScope();
157
158		// get the name of the current stream "Does it work inside an include?"
159	7	const std::string inputName = ai->getInputStreamName();
160
161		// Test in the directory of the actual parsed file
162	7	std::string currentDirFileName;
163	7	if(inputName != "<stdin>") {
164		// TODO: Use dirname or Boost::filesystem?
165	7	size_t pos = inputName.rfind('/');
166	7	if(pos != std::string::npos) {
167		currentDirFileName = std::string(inputName, 0, pos + 1);
168		}
169	7	currentDirFileName.append(fileName);
170	7	if(newInputStream(currentDirFileName,lexer, d_in_created)) {
171	7	return;
172		}
173		} else {
174		currentDirFileName = "<unknown current directory for stdin>";
175		}
176
177		if(d_tptpDir.empty()) {
178		parseError("Couldn't open included file: " + fileName
179		+ " at " + currentDirFileName + " and the TPTP directory is not specified (environment variable TPTP)");
180		};
181
182		std::string tptpDirFileName = d_tptpDir + fileName;
183		if(! newInputStream(tptpDirFileName,lexer, d_in_created)) {
184		parseError("Couldn't open included file: " + fileName
185		+ " at " + currentDirFileName + " or " + tptpDirFileName);
186		}
187		}
188
189	3	void Tptp::checkLetBinding(const std::vector<api::Term>& bvlist,
190		api::Term lhs,
191		api::Term rhs,
192		bool formula)
193		{
194	3	if (lhs.getKind() != api::APPLY_UF)
195		{
196		parseError("malformed let: LHS must be a flat function application");
197		}
198	6	const std::multiset<api::Term> vars{lhs.begin(), lhs.end()};
199	3	if (formula && !lhs.getSort().isBoolean())
200		{
201		parseError("malformed let: LHS must be formula");
202		}
203	11	for (const cvc5::api::Term& var : vars)
204		{
205	8	if (var.hasOp())
206		{
207		parseError("malformed let: LHS must be flat, illegal child: " +
208		var.toString());
209		}
210		}
211
212		// ensure all let-bound variables appear on the LHS, and appear only once
213	8	for (const api::Term& bound_var : bvlist)
214		{
215	5	const size_t count = vars.count(bound_var);
216	5	if (count == 0) {
217		parseError(
218		"malformed let: LHS must make use of all quantified variables, "
219		"missing `" +
220		bound_var.toString() + "'");
221	5	} else if (count >= 2) {
222		parseError("malformed let: LHS cannot use same bound variable twice: " +
223		bound_var.toString());
224		}
225		}
226	3	}
227
228	5258	api::Term Tptp::parseOpToExpr(ParseOp& p)
229		{
230	10516	api::Term expr;
231	5258	if (!p.d_expr.isNull())
232		{
233		return p.d_expr;
234		}
235		// if it has a kind, it's a builtin one and this function should not have been
236		// called
237	5258	Assert(p.d_kind == api::NULL_EXPR);
238	5258	if (isDeclared(p.d_name))
239		{ // already appeared
240	5174	expr = getVariable(p.d_name);
241		}
242		else
243		{
244		api::Sort t =
245	168	p.d_type == d_solver->getBooleanSort() ? p.d_type : d_unsorted;
246	84	expr = bindVar(p.d_name, t, true); // must define at level zero
247	84	preemptCommand(new DeclareFunctionCommand(p.d_name, expr, t));
248		}
249	5258	return expr;
250		}
251
252	896	api::Term Tptp::applyParseOp(ParseOp& p, std::vector<api::Term>& args)
253		{
254	896	if (Debug.isOn("parser"))
255		{
256		Debug("parser") << "applyParseOp: " << p << " to:" << std::endl;
257		for (std::vector<api::Term>::iterator i = args.begin(); i != args.end();
258		++i)
259		{
260		Debug("parser") << "++ " << *i << std::endl;
261		}
262		}
263	896	Assert(!args.empty());
264		// If operator already defined, just build application
265	896	if (!p.d_expr.isNull())
266		{
267		// this happens with some arithmetic kinds, which are wrapped around
268		// lambdas.
269	27	args.insert(args.begin(), p.d_expr);
270	27	return d_solver->mkTerm(api::APPLY_UF, args);
271		}
272	869	bool isBuiltinKind = false;
273		// the builtin kind of the overall return expression
274	869	api::Kind kind = api::NULL_EXPR;
275		// First phase: piece operator together
276	869	if (p.d_kind == api::NULL_EXPR)
277		{
278		// A non-built-in function application, get the expression
279	1010	api::Term v;
280	505	if (isDeclared(p.d_name))
281		{ // already appeared
282	439	v = getVariable(p.d_name);
283		}
284		else
285		{
286	132	std::vector<api::Sort> sorts(args.size(), d_unsorted);
287		api::Sort t =
288	132	p.d_type == d_solver->getBooleanSort() ? p.d_type : d_unsorted;
289	66	t = d_solver->mkFunctionSort(sorts, t);
290	66	v = bindVar(p.d_name, t, true); // must define at level zero
291	66	preemptCommand(new DeclareFunctionCommand(p.d_name, v, t));
292		}
293		// args might be rationals, in which case we need to create
294		// distinct constants of the "unsorted" sort to represent them
295	1213	for (size_t i = 0; i < args.size(); ++i)
296		{
297	2124	if (args[i].getSort().isReal()
298	2124	&& v.getSort().getFunctionDomainSorts()[i] == d_unsorted)
299		{
300		args[i] = convertRatToUnsorted(args[i]);
301		}
302		}
303	505	Assert(!v.isNull());
304	505	checkFunctionLike(v);
305	505	kind = getKindForFunction(v);
306	505	args.insert(args.begin(), v);
307		}
308		else
309		{
310	364	kind = p.d_kind;
311	364	isBuiltinKind = true;
312		}
313	869	Assert(kind != api::NULL_EXPR);
314	869	const Options& opts = d_solver->getOptions();
315		// Second phase: apply parse op to the arguments
316	869	if (isBuiltinKind)
317		{
318	364	if (!opts.getUfHo() && (kind == api::EQUAL \|\| kind == api::DISTINCT))
319		{
320		// need --uf-ho if these operators are applied over function args
321	201	for (std::vector<api::Term>::iterator i = args.begin(); i != args.end();
322		++i)
323		{
324	134	if ((*i).getSort().isFunction())
325		{
326		parseError(
327		"Cannot apply equalty to functions unless --uf-ho is set.");
328		}
329		}
330		}
331	1092	if (!strictModeEnabled() && (kind == api::AND \|\| kind == api::OR)
332	426	&& args.size() == 1)
333		{
334		// Unary AND/OR can be replaced with the argument.
335		return args[0];
336		}
337	364	if (kind == api::MINUS && args.size() == 1)
338		{
339		return d_solver->mkTerm(api::UMINUS, args[0]);
340		}
341	364	if (kind == api::TO_REAL)
342		{
343		// If the type is real, this is a no-op. We require this special
344		// case in the TPTP parser since TO_REAL is designed to match the
345		// SMT-LIB operator, meaning it can only be applied to integers, whereas
346		// the TPTP to_real / to_rat do not have the same semantics.
347	11	api::Sort s = args[0].getSort();
348	8	if (s.isReal())
349		{
350	5	return args[0];
351		}
352		}
353	359	return d_solver->mkTerm(kind, args);
354		}
355
356		// check if partially applied function, in this case we use HO_APPLY
357	505	if (args.size() >= 2)
358		{
359	1010	api::Sort argt = args[0].getSort();
360	505	if (argt.isFunction())
361		{
362	505	unsigned arity = argt.getFunctionArity();
363	505	if (args.size() - 1 < arity)
364		{
365		if (!opts.getUfHo())
366		{
367		parseError("Cannot partially apply functions unless --uf-ho is set.");
368		}
369		Debug("parser") << "Partial application of " << args[0];
370		Debug("parser") << " : #argTypes = " << arity;
371		Debug("parser") << ", #args = " << args.size() - 1 << std::endl;
372		// must curry the partial application
373		return d_solver->mkTerm(api::HO_APPLY, args);
374		}
375		}
376		}
377	505	return d_solver->mkTerm(kind, args);
378		}
379
380	70	api::Term Tptp::mkDecimal(
381		std::string& snum, std::string& sden, bool pos, size_t exp, bool posE)
382		{
383		// the numerator and the denominator
384	140	std::stringstream ssn;
385	140	std::stringstream ssd;
386	70	if (exp != 0)
387		{
388	16	if (posE)
389		{
390		// see if we need to pad zeros on the end, e.g. 1.2E5 ---> 120000
391	10	if (exp >= sden.size())
392		{
393	10	ssn << snum << sden;
394	4953	for (size_t i = 0, nzero = (exp - sden.size()); i < nzero; i++)
395		{
396	4943	ssn << "0";
397		}
398	10	ssd << "0";
399		}
400		else
401		{
402		ssn << snum << sden.substr(0, exp);
403		ssd << sden.substr(exp);
404		}
405		}
406		else
407		{
408		// see if we need to pad zeros on the beginning, e.g. 1.2E-5 ---> 0.000012
409	6	if (exp >= snum.size())
410		{
411	6	ssn << "0";
412	3300	for (size_t i = 0, nzero = (exp - snum.size()); i < nzero; i++)
413		{
414	3294	ssd << "0";
415		}
416	6	ssd << snum << sden;
417		}
418		else
419		{
420		ssn << snum.substr(0, exp);
421		ssd << snum.substr(exp) << sden;
422		}
423		}
424		}
425		else
426		{
427	54	ssn << snum;
428	54	ssd << sden;
429		}
430	140	std::stringstream ss;
431	70	if (!pos)
432		{
433	11	ss << "-";
434		}
435	70	ss << ssn.str() << "." << ssd.str();
436	140	return d_solver->mkReal(ss.str());
437		}
438
439	1	void Tptp::forceLogic(const std::string& logic)
440		{
441	1	Parser::forceLogic(logic);
442	1	preemptCommand(new SetBenchmarkLogicCommand(logic));
443	1	}
444
445	59	void Tptp::addFreeVar(api::Term var)
446		{
447	59	Assert(cnf());
448	59	d_freeVar.push_back(var);
449	59	}
450
451	85	std::vector<api::Term> Tptp::getFreeVar()
452		{
453	85	Assert(cnf());
454	85	std::vector<api::Term> r;
455	85	r.swap(d_freeVar);
456	85	return r;
457		}
458
459	42	api::Term Tptp::convertRatToUnsorted(api::Term expr)
460		{
461		// Create the conversion function If they doesn't exists
462	42	if (d_rtu_op.isNull()) {
463	12	api::Sort t;
464		// Conversion from rational to unsorted
465	6	t = d_solver->mkFunctionSort(d_solver->getRealSort(), d_unsorted);
466	6	d_rtu_op = d_solver->mkConst(t, "$$rtu");
467	6	preemptCommand(new DeclareFunctionCommand("$$rtu", d_rtu_op, t));
468		// Conversion from unsorted to rational
469	6	t = d_solver->mkFunctionSort(d_unsorted, d_solver->getRealSort());
470	6	d_utr_op = d_solver->mkConst(t, "$$utr");
471	6	preemptCommand(new DeclareFunctionCommand("$$utr", d_utr_op, t));
472		}
473		// Add the inverse in order to show that over the elements that
474		// appear in the problem there is a bijection between unsorted and
475		// rational
476	84	api::Term ret = d_solver->mkTerm(api::APPLY_UF, d_rtu_op, expr);
477	42	if (d_r_converted.find(expr) == d_r_converted.end()) {
478	32	d_r_converted.insert(expr);
479	32	api::Term eq = d_solver->mkTerm(
480	64	api::EQUAL, expr, d_solver->mkTerm(api::APPLY_UF, d_utr_op, ret));
481	32	preemptCommand(new AssertCommand(eq));
482		}
483	84	return api::Term(ret);
484		}
485
486	6	api::Term Tptp::convertStrToUnsorted(std::string str)
487		{
488	6	api::Term& e = d_distinct_objects[str];
489	6	if (e.isNull())
490		{
491	6	e = d_solver->mkConst(d_unsorted, str);
492		}
493	6	return e;
494		}
495
496	1	api::Term Tptp::mkLambdaWrapper(api::Kind k, api::Sort argType)
497		{
498	2	Debug("parser") << "mkLambdaWrapper: kind " << k << " and type " << argType
499	1	<< "\n";
500	2	std::vector<api::Term> lvars;
501	2	std::vector<api::Sort> domainTypes = argType.getFunctionDomainSorts();
502	2	for (unsigned i = 0, size = domainTypes.size(); i < size; ++i)
503		{
504		// the introduced variable is internal (not parsable)
505	2	std::stringstream ss;
506	1	ss << "_lvar_" << i;
507	2	api::Term v = d_solver->mkVar(domainTypes[i], ss.str());
508	1	lvars.push_back(v);
509		}
510		// apply body of lambda to variables
511		api::Term wrapper =
512	1	d_solver->mkTerm(api::LAMBDA,
513	2	d_solver->mkTerm(api::BOUND_VAR_LIST, lvars),
514	3	d_solver->mkTerm(k, lvars));
515
516	2	return wrapper;
517		}
518
519	1319	api::Term Tptp::getAssertionExpr(FormulaRole fr, api::Term expr)
520		{
521	1319	switch (fr) {
522	1292	case FR_AXIOM:
523		case FR_HYPOTHESIS:
524		case FR_DEFINITION:
525		case FR_ASSUMPTION:
526		case FR_LEMMA:
527		case FR_THEOREM:
528		case FR_NEGATED_CONJECTURE:
529		case FR_PLAIN:
530		// it's a usual assert
531	1292	return expr;
532	24	case FR_CONJECTURE:
533		// it should be negated when asserted
534	24	return d_solver->mkTerm(api::NOT, expr);
535	3	case FR_UNKNOWN:
536		case FR_FI_DOMAIN:
537		case FR_FI_FUNCTORS:
538		case FR_FI_PREDICATES:
539		case FR_TYPE:
540		// it does not correspond to an assertion
541	3	return d_nullExpr;
542		break;
543		}
544		Assert(false); // unreachable
545		return d_nullExpr;
546		}
547
548	43	api::Term Tptp::getAssertionDistinctConstants()
549		{
550	86	std::vector<api::Term> constants;
551	49	for (std::pair<const std::string, api::Term>& cs : d_distinct_objects)
552		{
553	6	constants.push_back(cs.second);
554		}
555	43	if (constants.size() > 1)
556		{
557	3	return d_solver->mkTerm(api::DISTINCT, constants);
558		}
559	40	return d_nullExpr;
560		}
561
562	1319	Command* Tptp::makeAssertCommand(FormulaRole fr,
563		api::Term expr,
564		bool cnf,
565		bool inUnsatCore)
566		{
567		// For SZS ontology compliance.
568		// if we're in cnf() though, conjectures don't result in "Theorem" or
569		// "CounterSatisfiable".
570	1319	if (!cnf && (fr == FR_NEGATED_CONJECTURE \|\| fr == FR_CONJECTURE)) {
571	24	d_hasConjecture = true;
572	24	Assert(!expr.isNull());
573		}
574	1319	if( expr.isNull() ){
575	3	return new EmptyCommand("Untreated role for expression");
576		}else{
577	1316	return new AssertCommand(expr, inUnsatCore);
578		}
579		}
580
581		} // namespace parser
582	28179	} // namespace cvc5