index : Qt.git	QT_5_12_3 QT_5_13_1 QT_5_13_2 QT_5_14 master
	Qt s a cross-platform application framework that is used for developing application software that can be run on various software and hardware platforms with little or no change in the underlying codebase, while still being a native application with native capabilities and speed.

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log msg author committer range

path: root/tests/auto/qsslsocket

	Commit message (Expand)	Author	Age	Files	Lines
*	Doc: Fixing typo	Sergio Ahumada	2011-06-30	1	-2/+2
*	Merge remote-tracking branch 'qt/4.8'	Jyri Tahtela	2011-05-18	1	-2/+17
|\
| *	Merge branch 'master' of scm.dev.nokia.troll.no:qt/qt-qa-staging into master-...	Qt Continuous Integration System	2011-05-17	1	-2/+2
| |\
| | *	Merge remote branch 'origin/4.8' into qa-review-master	Rohan McGovern	2011-05-15	4	-12/+127
| | |\
| | * |	Remove Q_ASSERT from qsslsocket autotest.	Jason McDonald	2011-05-04	1	-2/+2
| * | |	Fix regression that caused waitForXXX(-1) to fail.	Thiago Macieira	2011-05-16	1	-0/+15
| | |/ | |/|
* | |	Update licenseheader text in source files for qt4.8	Jyri Tahtela	2011-05-13	1	-17/+17
|/ /
* |	Merge branch 'master' of scm.dev.troll.no:qt/qt-earth-team into symbian-socke...	Shane Kearns	2011-04-11	3	-4/+115
|\ \
| * |	SSL code: introduce new error value for blacklisted certificates	Peter Hartmann	2011-04-07	1	-6/+7
| * |	Merge branch 'master' of scm.dev.nokia.troll.no:qt/qt into earth-master	axis	2011-04-07	3	-3/+76
| |\ \
| | * \	Merge remote-tracking branch 'origin/4.7' into qt-master-from-4.7	Olivier Goffart	2011-03-31	3	-3/+76
| | |\ \ | | | |/ | | |/|
| | | *	QSslSocket: add test for blacklisted certificates	Peter Hartmann	2011-03-25	3	-3/+74
| * | |	QSslConfiguration: do not lazily construct the d-pointer	Peter Hartmann	2011-03-28	1	-1/+38
* | | |	Fix ssl autotest .pro files	Shane Kearns	2011-03-29	1	-1/+1
* | | |	Merge remote branch 'earth/master' into symbian-socket-engine	Shane Kearns	2011-03-25	1	-32/+136
|\ \ \ \ | |/ / /
| * | |	SSL: send SNI extension only if not connecting to an IP	Peter Hartmann	2011-03-22	1	-2/+4
| |/ /
| * |	SSL: Switch default version to TlsV1SslV3 (i.e. use TLS 1 or SSL 3)	Peter Hartmann	2011-03-14	1	-3/+15
| * |	SSL: introduce new option TlsV1SslV3 for SSL communication	Peter Hartmann	2011-03-14	1	-30/+120
* | |	Merge branch 'symbian-socket-engine' of scm.dev.troll.no:qt/qt-symbian-networ...	Shane Kearns	2011-03-08	2	-7/+9
|\ \ \ | |/ / |/| |
| * |	Fix symbian test failures for qsslsocket	Shane Kearns	2011-02-24	1	-3/+6
| * |	Fix qsslsocket test crashes	Shane Kearns	2011-02-24	2	-4/+4
* | |	SSL: Switch default version to TLS 1.0	Peter Hartmann	2011-02-28	1	-2/+2
* | |	SSL backend: loat root certificates on demand on Unix (excluding Mac)	Peter Hartmann	2011-02-23	1	-0/+3
* | |	do not test against imap.trolltech.com	Peter Hartmann	2011-02-21	1	-5/+0
|/ /
* |	Merge remote branch 'origin/4.7' into qt-master-from-4.7	Olivier Goffart	2011-01-17	1	-2/+3
|\ \ | |/
| *	Update copyright year to 2011.	Jason McDonald	2011-01-10	1	-1/+1
| *	network tests: make IMAP, FTP testdata more flexible.	Rohan McGovern	2011-01-10	1	-1/+2
* |	Align .pro with qmake: s/\.sources/.files/.	Miikka Heikkinen	2010-10-08	1	-2/+2
|/
*	QSslConfiguration: fix crash when accessing null pointer	Peter Hartmann	2010-08-30	1	-0/+16
*	QSslSocket: fix security vulnerability with wildcard IP addresses	Peter Hartmann	2010-08-10	1	-0/+2
*	Added $$MW_LAYER_SYSTEMINCLUDE to some autotests	Miikka Heikkinen	2010-08-06	1	-0/+1
*	Fix handling of SSL certificates with wildcard domain names	Richard J. Moore	2010-07-09	1	-0/+24
*	Run autotests with minimal capabilities	Shane Kearns	2010-05-10	1	-1/+1
*	Merge remote branch 'origin/4.6' into qt-4.7-from-4.6	Thiago Macieira	2010-04-12	1	-3/+2
|\
| *	Autotest: moved these to the qtest/ dir	Thiago Macieira	2010-04-11	1	-3/+2
* |	Merge branch '4.6' into qt-4.7-from-4.6	Thiago Macieira	2010-04-09	1	-0/+1
|\ \ | |/
| *	Autotest: fix paths on the test server after update.	Thiago Macieira	2010-04-09	1	-0/+1
* |	SSL: Fix memleak related to local certificate	Markus Goetz	2010-03-15	1	-0/+15
|/
*	QAbstractSocket: Use new faster DNS function	Markus Goetz	2010-03-02	2	-1/+7
*	Update copyright year to 2010	Jason McDonald	2010-01-06	1	-1/+1
*	Remove TEST_QNETWORK_PROXY define from the tests	Markus Goetz	2010-01-04	1	-11/+0
*	Fix regression introduced in 98a05681851db9d88b1364af52be543715fbe306	João Abecasis	2009-11-18	1	-1/+0
*	QAbstractSocket: wait with closing until all bytes have been written	Peter Hartmann	2009-10-27	1	-3/+1
*	QSslSocket: Trigger a SSL transmission when reading from the socket.	Markus Goetz	2009-10-22	1	-0/+61
*	Merge branch '4.5' into 4.6	Thiago Macieira	2009-10-21	1	-0/+45
|\
| *	tst_qsslsocket: new bigChunk testcase	Markus Goetz	2009-10-20	1	-0/+45
| *	Update license headers again.	Jason McDonald	2009-09-08	1	-4/+4
* |	stabilize QSslSocket autotest	Peter Hartmann	2009-10-13	1	-0/+1
* |	Update license headers again.	Jason McDonald	2009-09-09	1	-4/+4
* |	QSslSocket autotest: fix failing tests	Peter Hartmann	2009-09-02	1	-1/+1

• [next]

generated by cgit v0.12 at 2025-01-10 04:50:56 (GMT)

/*============================================================================
  CMake - Cross Platform Makefile Generator
  Copyright 2012 Stephen Kelly <steveire@gmail.com>

  Distributed under the OSI-approved BSD License (the "License");
  see accompanying file Copyright.txt for details.

  This software is distributed WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the License for more information.
============================================================================*/

#include "cmGeneratorExpressionNode.h"
#include "cmGlobalGenerator.h"
#include "cmAlgorithms.h"
#include "cmOutputConverter.h"

//----------------------------------------------------------------------------
std::string cmGeneratorExpressionNode::EvaluateDependentExpression(
    std::string const& prop, cmMakefile *makefile,
    cmGeneratorExpressionContext *context,
    cmTarget const* headTarget, cmTarget const* currentTarget,
    cmGeneratorExpressionDAGChecker *dagChecker)
{
  cmGeneratorExpression ge(context->Backtrace);
  cmsys::auto_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
  cge->SetEvaluateForBuildsystem(context->EvaluateForBuildsystem);
  std::string result = cge->Evaluate(makefile,
                        context->Config,
                        context->Quiet,
                        headTarget,
                        currentTarget,
                        dagChecker,
                        context->Language);
  if (cge->GetHadContextSensitiveCondition())
    {
    context->HadContextSensitiveCondition = true;
    }
  if (cge->GetHadHeadSensitiveCondition())
    {
    context->HadHeadSensitiveCondition = true;
    }
  return result;
}

//----------------------------------------------------------------------------
static const struct ZeroNode : public cmGeneratorExpressionNode
{
  ZeroNode() {}

  virtual bool GeneratesContent() const { return false; }

  virtual bool AcceptsArbitraryContentParameter() const { return true; }

  std::string Evaluate(const std::vector<std::string> &,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return std::string();
  }
} zeroNode;

//----------------------------------------------------------------------------
static const struct OneNode : public cmGeneratorExpressionNode
{
  OneNode() {}

  virtual bool AcceptsArbitraryContentParameter() const { return true; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return parameters.front();
  }
} oneNode;

//----------------------------------------------------------------------------
static const struct OneNode buildInterfaceNode;

//----------------------------------------------------------------------------
static const struct ZeroNode installInterfaceNode;

//----------------------------------------------------------------------------
#define BOOLEAN_OP_NODE(OPNAME, OP, SUCCESS_VALUE, FAILURE_VALUE) \
static const struct OP ## Node : public cmGeneratorExpressionNode \
{ \
  OP ## Node () {} \
  virtual int NumExpectedParameters() const { return OneOrMoreParameters; } \
 \
  std::string Evaluate(const std::vector<std::string> &parameters, \
                       cmGeneratorExpressionContext *context, \
                       const GeneratorExpressionContent *content, \
                       cmGeneratorExpressionDAGChecker *) const \
  { \
    std::vector<std::string>::const_iterator it = parameters.begin(); \
    const std::vector<std::string>::const_iterator end = parameters.end(); \
    for ( ; it != end; ++it) \
      { \
      if (*it == #FAILURE_VALUE) \
        { \
        return #FAILURE_VALUE; \
        } \
      else if (*it != #SUCCESS_VALUE) \
        { \
        reportError(context, content->GetOriginalExpression(), \
        "Parameters to $<" #OP "> must resolve to either '0' or '1'."); \
        return std::string(); \
        } \
      } \
    return #SUCCESS_VALUE; \
  } \
} OPNAME;

BOOLEAN_OP_NODE(andNode, AND, 1, 0)
BOOLEAN_OP_NODE(orNode, OR, 0, 1)

#undef BOOLEAN_OP_NODE

//----------------------------------------------------------------------------
static const struct NotNode : public cmGeneratorExpressionNode
{
  NotNode() {}

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *) const
  {
    if (*parameters.begin() != "0" && *parameters.begin() != "1")
      {
      reportError(context, content->GetOriginalExpression(),
            "$<NOT> parameter must resolve to exactly one '0' or '1' value.");
      return std::string();
      }
    return *parameters.begin() == "0" ? "1" : "0";
  }
} notNode;

//----------------------------------------------------------------------------
static const struct BoolNode : public cmGeneratorExpressionNode
{
  BoolNode() {}

  virtual int NumExpectedParameters() const { return 1; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return !cmSystemTools::IsOff(parameters.begin()->c_str()) ? "1" : "0";
  }
} boolNode;

//----------------------------------------------------------------------------
static const struct StrEqualNode : public cmGeneratorExpressionNode
{
  StrEqualNode() {}

  virtual int NumExpectedParameters() const { return 2; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return *parameters.begin() == parameters[1] ? "1" : "0";
  }
} strEqualNode;

//----------------------------------------------------------------------------
static const struct EqualNode : public cmGeneratorExpressionNode
{
  EqualNode() {}

  virtual int NumExpectedParameters() const { return 2; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *) const
  {
    char *pEnd;

    int base = 0;
    bool flipSign = false;

    const char *lhs = parameters[0].c_str();
    if (cmHasLiteralPrefix(lhs, "0b") || cmHasLiteralPrefix(lhs, "0B"))
      {
      base = 2;
      lhs += 2;
      }
    if (cmHasLiteralPrefix(lhs, "-0b") || cmHasLiteralPrefix(lhs, "-0B"))
      {
      base = 2;
      lhs += 3;
      flipSign = true;
      }
    if (cmHasLiteralPrefix(lhs, "+0b") || cmHasLiteralPrefix(lhs, "+0B"))
      {
      base = 2;
      lhs += 3;
      }

    long lnum = strtol(lhs, &pEnd, base);
    if (pEnd == lhs || *pEnd != '\0' || errno == ERANGE)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<EQUAL> parameter " + parameters[0] + " is not a valid integer.");
      return std::string();
      }

    if (flipSign)
      {
      lnum = -lnum;
      }

    base = 0;
    flipSign = false;

    const char *rhs = parameters[1].c_str();
    if (cmHasLiteralPrefix(rhs, "0b") || cmHasLiteralPrefix(rhs, "0B"))
      {
      base = 2;
      rhs += 2;
      }
    if (cmHasLiteralPrefix(rhs, "-0b") || cmHasLiteralPrefix(rhs, "-0B"))
      {
      base = 2;
      rhs += 3;
      flipSign = true;
      }
    if (cmHasLiteralPrefix(rhs, "+0b") || cmHasLiteralPrefix(rhs, "+0B"))
      {
      base = 2;
      rhs += 3;
      }

    long rnum = strtol(rhs, &pEnd, base);
    if (pEnd == rhs || *pEnd != '\0' || errno == ERANGE)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<EQUAL> parameter " + parameters[1] + " is not a valid integer.");
      return std::string();
      }

    if (flipSign)
      {
      rnum = -rnum;
      }

    return lnum == rnum ? "1" : "0";
  }
} equalNode;

//----------------------------------------------------------------------------
static const struct LowerCaseNode : public cmGeneratorExpressionNode
{
  LowerCaseNode() {}

  bool AcceptsArbitraryContentParameter() const { return true; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return cmSystemTools::LowerCase(parameters.front());
  }
} lowerCaseNode;

//----------------------------------------------------------------------------
static const struct UpperCaseNode : public cmGeneratorExpressionNode
{
  UpperCaseNode() {}

  bool AcceptsArbitraryContentParameter() const { return true; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return cmSystemTools::UpperCase(parameters.front());
  }
} upperCaseNode;

//----------------------------------------------------------------------------
static const struct MakeCIdentifierNode : public cmGeneratorExpressionNode
{
  MakeCIdentifierNode() {}

  bool AcceptsArbitraryContentParameter() const { return true; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return cmSystemTools::MakeCidentifier(parameters.front());
  }
} makeCIdentifierNode;

//----------------------------------------------------------------------------
static const struct Angle_RNode : public cmGeneratorExpressionNode
{
  Angle_RNode() {}

  virtual int NumExpectedParameters() const { return 0; }

  std::string Evaluate(const std::vector<std::string> &,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return ">";
  }
} angle_rNode;

//----------------------------------------------------------------------------
static const struct CommaNode : public cmGeneratorExpressionNode
{
  CommaNode() {}

  virtual int NumExpectedParameters() const { return 0; }

  std::string Evaluate(const std::vector<std::string> &,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return ",";
  }
} commaNode;

//----------------------------------------------------------------------------
static const struct SemicolonNode : public cmGeneratorExpressionNode
{
  SemicolonNode() {}

  virtual int NumExpectedParameters() const { return 0; }

  std::string Evaluate(const std::vector<std::string> &,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return ";";
  }
} semicolonNode;

//----------------------------------------------------------------------------
struct CompilerIdNode : public cmGeneratorExpressionNode
{
  CompilerIdNode() {}

  virtual int NumExpectedParameters() const { return OneOrZeroParameters; }

  std::string EvaluateWithLanguage(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *,
                       const std::string &lang) const
  {
    const char *compilerId =
      context->Makefile->GetSafeDefinition("CMAKE_" + lang + "_COMPILER_ID");
    if (parameters.empty())
      {
      return compilerId ? compilerId : "";
      }
    static cmsys::RegularExpression compilerIdValidator("^[A-Za-z0-9_]*$");
    if (!compilerIdValidator.find(*parameters.begin()))
      {
      reportError(context, content->GetOriginalExpression(),
                  "Expression syntax not recognized.");
      return std::string();
      }
    if (!compilerId)
      {
      return parameters.front().empty() ? "1" : "0";
      }

    if (strcmp(parameters.begin()->c_str(), compilerId) == 0)
      {
      return "1";
      }

    if (cmsysString_strcasecmp(parameters.begin()->c_str(), compilerId) == 0)
      {
      switch(context->Makefile->GetPolicyStatus(cmPolicies::CMP0044))
        {
        case cmPolicies::WARN:
          {
          std::ostringstream e;
          e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0044);
          context->Makefile->GetCMakeInstance()
                 ->IssueMessage(cmake::AUTHOR_WARNING,
                                e.str(), context->Backtrace);
          }
        case cmPolicies::OLD:
          return "1";
        case cmPolicies::NEW:
        case cmPolicies::REQUIRED_ALWAYS:
        case cmPolicies::REQUIRED_IF_USED:
          break;
        }
      }
    return "0";
  }
};

//----------------------------------------------------------------------------
static const struct CCompilerIdNode : public CompilerIdNode
{
  CCompilerIdNode() {}

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *dagChecker) const
  {
    if (!context->HeadTarget)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<C_COMPILER_ID> may only be used with binary targets.  It may "
          "not be used with add_custom_command or add_custom_target.");
      return std::string();
      }
    return this->EvaluateWithLanguage(parameters, context, content,
                                      dagChecker, "C");
  }
} cCompilerIdNode;

//----------------------------------------------------------------------------
static const struct CXXCompilerIdNode : public CompilerIdNode
{
  CXXCompilerIdNode() {}

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *dagChecker) const
  {
    if (!context->HeadTarget)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<CXX_COMPILER_ID> may only be used with binary targets.  It may "
          "not be used with add_custom_command or add_custom_target.");
      return std::string();
      }
    return this->EvaluateWithLanguage(parameters, context, content,
                                      dagChecker, "CXX");
  }
} cxxCompilerIdNode;

//----------------------------------------------------------------------------
struct CompilerVersionNode : public cmGeneratorExpressionNode
{
  CompilerVersionNode() {}

  virtual int NumExpectedParameters() const { return OneOrZeroParameters; }

  std::string EvaluateWithLanguage(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *,
                       const std::string &lang) const
  {
    const char *compilerVersion = context->Makefile->GetSafeDefinition(
        "CMAKE_" + lang + "_COMPILER_VERSION");
    if (parameters.empty())
      {
      return compilerVersion ? compilerVersion : "";
      }

    static cmsys::RegularExpression compilerIdValidator("^[0-9\\.]*$");
    if (!compilerIdValidator.find(*parameters.begin()))
      {
      reportError(context, content->GetOriginalExpression(),
                  "Expression syntax not recognized.");
      return std::string();
      }
    if (!compilerVersion)
      {
      return parameters.front().empty() ? "1" : "0";
      }

    return cmSystemTools::VersionCompare(cmSystemTools::OP_EQUAL,
                                      parameters.begin()->c_str(),
                                      compilerVersion) ? "1" : "0";
  }
};

//----------------------------------------------------------------------------
static const struct CCompilerVersionNode : public CompilerVersionNode
{
  CCompilerVersionNode() {}

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *dagChecker) const
  {
    if (!context->HeadTarget)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<C_COMPILER_VERSION> may only be used with binary targets.  It "
          "may not be used with add_custom_command or add_custom_target.");
      return std::string();
      }
    return this->EvaluateWithLanguage(parameters, context, content,
                                      dagChecker, "C");
  }
} cCompilerVersionNode;

//----------------------------------------------------------------------------
static const struct CxxCompilerVersionNode : public CompilerVersionNode
{
  CxxCompilerVersionNode() {}

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *dagChecker) const
  {
    if (!context->HeadTarget)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<CXX_COMPILER_VERSION> may only be used with binary targets.  It "
          "may not be used with add_custom_command or add_custom_target.");
      return std::string();
      }
    return this->EvaluateWithLanguage(parameters, context, content,
                                      dagChecker, "CXX");
  }
} cxxCompilerVersionNode;


//----------------------------------------------------------------------------
struct PlatformIdNode : public cmGeneratorExpressionNode
{
  PlatformIdNode() {}

  virtual int NumExpectedParameters() const { return OneOrZeroParameters; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    const char *platformId =
      context->Makefile->GetSafeDefinition("CMAKE_SYSTEM_NAME");
    if (parameters.empty())
      {
      return platformId ? platformId : "";
      }

    if (!platformId)
      {
      return parameters.front().empty() ? "1" : "0";
      }

    if (strcmp(parameters.begin()->c_str(), platformId) == 0)
      {
      return "1";
      }
    return "0";
  }
} platformIdNode;

//----------------------------------------------------------------------------
static const struct VersionGreaterNode : public cmGeneratorExpressionNode
{
  VersionGreaterNode() {}

  virtual int NumExpectedParameters() const { return 2; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return cmSystemTools::VersionCompare(cmSystemTools::OP_GREATER,
                                         parameters.front().c_str(),
                                         parameters[1].c_str()) ? "1" : "0";
  }
} versionGreaterNode;

//----------------------------------------------------------------------------
static const struct VersionLessNode : public cmGeneratorExpressionNode
{
  VersionLessNode() {}

  virtual int NumExpectedParameters() const { return 2; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return cmSystemTools::VersionCompare(cmSystemTools::OP_LESS,
                                         parameters.front().c_str(),
                                         parameters[1].c_str()) ? "1" : "0";
  }
} versionLessNode;

//----------------------------------------------------------------------------
static const struct VersionEqualNode : public cmGeneratorExpressionNode
{
  VersionEqualNode() {}

  virtual int NumExpectedParameters() const { return 2; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return cmSystemTools::VersionCompare(cmSystemTools::OP_EQUAL,
                                         parameters.front().c_str(),
                                         parameters[1].c_str()) ? "1" : "0";
  }
} versionEqualNode;

//----------------------------------------------------------------------------
static const struct LinkOnlyNode : public cmGeneratorExpressionNode
{
  LinkOnlyNode() {}

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *dagChecker) const
  {
    if(!dagChecker->GetTransitivePropertiesOnly())
      {
      return parameters.front();
      }
    return "";
  }
} linkOnlyNode;

//----------------------------------------------------------------------------
static const struct ConfigurationNode : public cmGeneratorExpressionNode
{
  ConfigurationNode() {}

  virtual int NumExpectedParameters() const { return 0; }

  std::string Evaluate(const std::vector<std::string> &,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    context->HadContextSensitiveCondition = true;
    return context->Config;
  }
} configurationNode;

//----------------------------------------------------------------------------
static const struct ConfigurationTestNode : public cmGeneratorExpressionNode
{
  ConfigurationTestNode() {}

  virtual int NumExpectedParameters() const { return OneOrZeroParameters; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *) const
  {
    if (parameters.empty())
      {
      return configurationNode.Evaluate(parameters, context, content, 0);
      }
    static cmsys::RegularExpression configValidator("^[A-Za-z0-9_]*$");
    if (!configValidator.find(*parameters.begin()))
      {
      reportError(context, content->GetOriginalExpression(),
                  "Expression syntax not recognized.");
      return std::string();
      }
    context->HadContextSensitiveCondition = true;
    if (context->Config.empty())
      {
      return parameters.front().empty() ? "1" : "0";
      }

    if (cmsysString_strcasecmp(parameters.begin()->c_str(),
                               context->Config.c_str()) == 0)
      {
      return "1";
      }

    if (context->CurrentTarget
        && context->CurrentTarget->IsImported())
      {
      const char* loc = 0;
      const char* imp = 0;
      std::string suffix;
      if (context->CurrentTarget->GetMappedConfig(context->Config,
                                                  &loc,
                                                  &imp,
                                                  suffix))
        {
        // This imported target has an appropriate location
        // for this (possibly mapped) config.
        // Check if there is a proper config mapping for the tested config.
        std::vector<std::string> mappedConfigs;
        std::string mapProp = "MAP_IMPORTED_CONFIG_";
        mapProp += cmSystemTools::UpperCase(context->Config);
        if(const char* mapValue =
                        context->CurrentTarget->GetProperty(mapProp))
          {
          cmSystemTools::ExpandListArgument(cmSystemTools::UpperCase(mapValue),
                                            mappedConfigs);
          return std::find(mappedConfigs.begin(), mappedConfigs.end(),
                           cmSystemTools::UpperCase(parameters.front()))
              != mappedConfigs.end() ? "1" : "0";
          }
        }
      }
    return "0";
  }
} configurationTestNode;

static const struct JoinNode : public cmGeneratorExpressionNode
{
  JoinNode() {}

  virtual int NumExpectedParameters() const { return 2; }

  virtual bool AcceptsArbitraryContentParameter() const { return true; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    std::vector<std::string> list;
    cmSystemTools::ExpandListArgument(parameters.front(), list);
    return cmJoin(list, parameters[1]);
  }
} joinNode;

static const struct CompileLanguageNode : public cmGeneratorExpressionNode
{
  CompileLanguageNode() {}

  virtual int NumExpectedParameters() const { return OneOrZeroParameters; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *dagChecker) const
  {
    if(context->Language.empty())
      {
      reportError(context, content->GetOriginalExpression(),
          "$<COMPILE_LANGUAGE:...> may only be used to specify include "
          "directories compile definitions, compile options and to evaluate "
          "components of the file(GENERATE) command.");
      return std::string();
      }

    std::vector<std::string> enabledLanguages;
    cmGlobalGenerator* gg = context->Makefile->GetGlobalGenerator();
    gg->GetEnabledLanguages(enabledLanguages);
    if (!parameters.empty() &&
          std::find(enabledLanguages.begin(), enabledLanguages.end(),
                  parameters.front()) == enabledLanguages.end())
      {
      reportError(context, content->GetOriginalExpression(),
          "$<COMPILE_LANGUAGE:...> Unknown language.");
      return std::string();
      }
    std::string genName = gg->GetName();
    if (genName.find("Visual Studio") != std::string::npos)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<COMPILE_LANGUAGE:...> may not be used with Visual Studio "
          "generators.");
      return std::string();
      }
    else if (genName.find("Xcode") != std::string::npos)
      {
      if (dagChecker && (dagChecker->EvaluatingCompileDefinitions()
          || dagChecker->EvaluatingIncludeDirectories()))
        {
        reportError(context, content->GetOriginalExpression(),
            "$<COMPILE_LANGUAGE:...> may only be used with COMPILE_OPTIONS "
            "with the Xcode generator.");
        return std::string();
        }
      }
    else
      {
      if(genName.find("Makefiles") == std::string::npos &&
              genName.find("Ninja") == std::string::npos &&
              genName.find("Watcom WMake") == std::string::npos)
        {
        reportError(context, content->GetOriginalExpression(),
            "$<COMPILE_LANGUAGE:...> not supported for this generator.");
        return std::string();
        }
      }
    if (parameters.empty())
      {
      return context->Language;
      }
    return context->Language == parameters.front() ? "1" : "0";
  }
} languageNode;

#define TRANSITIVE_PROPERTY_NAME(PROPERTY) \
  , "INTERFACE_" #PROPERTY

//----------------------------------------------------------------------------
static const char* targetPropertyTransitiveWhitelist[] = {
  0
  CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(TRANSITIVE_PROPERTY_NAME)
};

#undef TRANSITIVE_PROPERTY_NAME

template <typename T>
std::string
getLinkedTargetsContent(
  std::vector<T> const &libraries,
  cmTarget const* target,
  cmTarget const* headTarget,
  cmGeneratorExpressionContext *context,
  cmGeneratorExpressionDAGChecker *dagChecker,
  const std::string &interfacePropertyName)
{
  std::string linkedTargetsContent;
  std::string sep;
  std::string depString;
  for (typename std::vector<T>::const_iterator it = libraries.begin();
       it != libraries.end(); ++it)
    {
    // Broken code can have a target in its own link interface.
    // Don't follow such link interface entries so as not to create a
    // self-referencing loop.
    if (it->Target && it->Target != target)
      {
      depString +=
        sep + "$<TARGET_PROPERTY:" +
        it->Target->GetName() + "," + interfacePropertyName + ">";
      sep = ";";
      }
    }
  if(!depString.empty())
    {
    linkedTargetsContent =
        cmGeneratorExpressionNode::EvaluateDependentExpression(depString,
                                        target->GetMakefile(), context,
                                        headTarget, target, dagChecker);
    }
  linkedTargetsContent =
    cmGeneratorExpression::StripEmptyListElements(linkedTargetsContent);
  return linkedTargetsContent;
}

//----------------------------------------------------------------------------
static const struct TargetPropertyNode : public cmGeneratorExpressionNode
{
  TargetPropertyNode() {}

  // This node handles errors on parameter count itself.
  virtual int NumExpectedParameters() const { return OneOrMoreParameters; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *dagCheckerParent
                      ) const
  {
    if (parameters.size() != 1 && parameters.size() != 2)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<TARGET_PROPERTY:...> expression requires one or two parameters");
      return std::string();
      }
    static cmsys::RegularExpression propertyNameValidator("^[A-Za-z0-9_]+$");

    cmTarget const* target = context->HeadTarget;
    std::string propertyName = *parameters.begin();

    if (parameters.size() == 1)
      {
      context->HadHeadSensitiveCondition = true;
      }
    if (!target && parameters.size() == 1)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<TARGET_PROPERTY:prop>  may only be used with binary targets.  "
          "It may not be used with add_custom_command or add_custom_target.  "
          "Specify the target to read a property from using the "
          "$<TARGET_PROPERTY:tgt,prop> signature instead.");
      return std::string();
      }

    if (parameters.size() == 2)
      {
      if (parameters.begin()->empty() && parameters[1].empty())
        {
        reportError(context, content->GetOriginalExpression(),
            "$<TARGET_PROPERTY:tgt,prop> expression requires a non-empty "
            "target name and property name.");
        return std::string();
        }
      if (parameters.begin()->empty())
        {
        reportError(context, content->GetOriginalExpression(),
            "$<TARGET_PROPERTY:tgt,prop> expression requires a non-empty "
            "target name.");
        return std::string();
        }

      std::string targetName = parameters.front();
      propertyName = parameters[1];
      if (!cmGeneratorExpression::IsValidTargetName(targetName))
        {
        if (!propertyNameValidator.find(propertyName.c_str()))
          {
          ::reportError(context, content->GetOriginalExpression(),
                        "Target name and property name not supported.");
          return std::string();
          }
        ::reportError(context, content->GetOriginalExpression(),
                      "Target name not supported.");
        return std::string();
        }
      if(propertyName == "ALIASED_TARGET")
        {
        if(context->Makefile->IsAlias(targetName))
          {
          if(cmTarget* tgt = context->Makefile->FindTargetToUse(targetName))
            {
            return tgt->GetName();
            }
          }
        return "";
        }
      target = context->Makefile->FindTargetToUse(targetName);

      if (!target)
        {
        std::ostringstream e;
        e << "Target \""
          << targetName
          << "\" not found.";
        reportError(context, content->GetOriginalExpression(), e.str());
        return std::string();
        }
      context->AllTargets.insert(target);
      }

    if (target == context->HeadTarget)
      {
      // Keep track of the properties seen while processing.
      // The evaluation of the LINK_LIBRARIES generator expressions
      // will check this to ensure that properties have one consistent
      // value for all evaluations.
      context->SeenTargetProperties.insert(propertyName);
      }
    if (propertyName == "SOURCES")
      {
      context->SourceSensitiveTargets.insert(target);
      }

    if (propertyName.empty())
      {
      reportError(context, content->GetOriginalExpression(),
          "$<TARGET_PROPERTY:...> expression requires a non-empty property "
          "name.");
      return std::string();
      }

    if (!propertyNameValidator.find(propertyName))
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "Property name not supported.");
      return std::string();
      }

    assert(target);

    cmGeneratorTarget* gtgt =
        context->Makefile->GetGlobalGenerator()->GetGeneratorTarget(target);

    if (propertyName == "LINKER_LANGUAGE")
      {
      if (target->LinkLanguagePropagatesToDependents() &&
          dagCheckerParent && (dagCheckerParent->EvaluatingLinkLibraries()
            || dagCheckerParent->EvaluatingSources()))
        {
        reportError(context, content->GetOriginalExpression(),
            "LINKER_LANGUAGE target property can not be used while evaluating "
            "link libraries for a static library");
        return std::string();
        }
      return gtgt->GetLinkerLanguage(context->Config);
      }

    cmGeneratorExpressionDAGChecker dagChecker(context->Backtrace,
                                               target->GetName(),
                                               propertyName,
                                               content,
                                               dagCheckerParent);

    switch (dagChecker.Check())
      {
    case cmGeneratorExpressionDAGChecker::SELF_REFERENCE:
      dagChecker.ReportError(context, content->GetOriginalExpression());
      return std::string();
    case cmGeneratorExpressionDAGChecker::CYCLIC_REFERENCE:
      // No error. We just skip cyclic references.
      return std::string();
    case cmGeneratorExpressionDAGChecker::ALREADY_SEEN:
      for (size_t i = 1;
          i < cmArraySize(targetPropertyTransitiveWhitelist);
          ++i)
        {
        if (targetPropertyTransitiveWhitelist[i] == propertyName)
          {
          // No error. We're not going to find anything new here.
          return std::string();
          }
        }
    case cmGeneratorExpressionDAGChecker::DAG:
      break;
      }

    const char *prop = target->GetProperty(propertyName);

    if (dagCheckerParent)
      {
      if (dagCheckerParent->EvaluatingLinkLibraries())
        {
#define TRANSITIVE_PROPERTY_COMPARE(PROPERTY) \
    (#PROPERTY == propertyName || "INTERFACE_" #PROPERTY == propertyName) ||
        if (CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(TRANSITIVE_PROPERTY_COMPARE)
            false)
          {
          reportError(context, content->GetOriginalExpression(),
              "$<TARGET_PROPERTY:...> expression in link libraries "
              "evaluation depends on target property which is transitive "
              "over the link libraries, creating a recursion.");
          return std::string();
          }
#undef TRANSITIVE_PROPERTY_COMPARE

        if(!prop)
          {
          return std::string();
          }
        }
      else
        {
#define ASSERT_TRANSITIVE_PROPERTY_METHOD(METHOD) \
  dagCheckerParent->METHOD () ||

        assert(
          CM_FOR_EACH_TRANSITIVE_PROPERTY_METHOD(
                                            ASSERT_TRANSITIVE_PROPERTY_METHOD)
          false);
#undef ASSERT_TRANSITIVE_PROPERTY_METHOD
        }
      }

    std::string linkedTargetsContent;

    std::string interfacePropertyName;
    bool isInterfaceProperty = false;

#define POPULATE_INTERFACE_PROPERTY_NAME(prop) \
    if (propertyName == #prop) \
      { \
      interfacePropertyName = "INTERFACE_" #prop; \
      } \
    else if (propertyName == "INTERFACE_" #prop) \
      { \
      interfacePropertyName = "INTERFACE_" #prop; \
      isInterfaceProperty = true; \
      } \
    else

    CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(POPULATE_INTERFACE_PROPERTY_NAME)
      // Note that the above macro terminates with an else
    /* else */ if (cmHasLiteralPrefix(propertyName.c_str(),
                           "COMPILE_DEFINITIONS_"))
      {
      cmPolicies::PolicyStatus polSt =
                      context->Makefile->GetPolicyStatus(cmPolicies::CMP0043);
      if (polSt == cmPolicies::WARN || polSt == cmPolicies::OLD)
        {
        interfacePropertyName = "INTERFACE_COMPILE_DEFINITIONS";
        }
      }
#undef POPULATE_INTERFACE_PROPERTY_NAME
    cmTarget const* headTarget = context->HeadTarget && isInterfaceProperty
                               ? context->HeadTarget : target;

    if(isInterfaceProperty)
      {
      if(cmLinkInterfaceLibraries const* iface =
         gtgt->GetLinkInterfaceLibraries(context->Config, headTarget, true))
        {
        linkedTargetsContent =
          getLinkedTargetsContent(iface->Libraries, target,
                                  headTarget,
                                  context, &dagChecker,
                                  interfacePropertyName);
        }
      }
    else if(!interfacePropertyName.empty())
      {
      if(cmLinkImplementationLibraries const* impl =
         gtgt->GetLinkImplementationLibraries(context->Config))
        {
        linkedTargetsContent =
          getLinkedTargetsContent(impl->Libraries, target,
                                  target,
                                  context, &dagChecker,
                                  interfacePropertyName);
        }
      }

    if (!prop)
      {
      if (target->IsImported()
          || target->GetType() == cmTarget::INTERFACE_LIBRARY)
        {
        return linkedTargetsContent;
        }
      if (gtgt->IsLinkInterfaceDependentBoolProperty(propertyName,
                                                     context->Config))
        {
        context->HadContextSensitiveCondition = true;
        return gtgt->GetLinkInterfaceDependentBoolProperty(
                                                propertyName,
                                                context->Config) ? "1" : "0";
        }
      if (gtgt->IsLinkInterfaceDependentStringProperty(propertyName,
                                                       context->Config))
        {
        context->HadContextSensitiveCondition = true;
        const char *propContent =
                              gtgt->GetLinkInterfaceDependentStringProperty(
                                                propertyName,
                                                context->Config);
        return propContent ? propContent : "";
        }
      if (gtgt->IsLinkInterfaceDependentNumberMinProperty(propertyName,
                                                          context->Config))
        {
        context->HadContextSensitiveCondition = true;
        const char *propContent =
                          gtgt->GetLinkInterfaceDependentNumberMinProperty(
                                                propertyName,
                                                context->Config);
        return propContent ? propContent : "";
        }
      if (gtgt->IsLinkInterfaceDependentNumberMaxProperty(propertyName,
                                                          context->Config))
        {
        context->HadContextSensitiveCondition = true;
        const char *propContent =
                          gtgt->GetLinkInterfaceDependentNumberMaxProperty(
                                                propertyName,
                                                context->Config);
        return propContent ? propContent : "";
        }

      return linkedTargetsContent;
      }

    if (!target->IsImported()
        && dagCheckerParent && !dagCheckerParent->EvaluatingLinkLibraries())
      {
      if (gtgt->IsLinkInterfaceDependentNumberMinProperty(propertyName,
                                                          context->Config))
        {
        context->HadContextSensitiveCondition = true;
        const char *propContent =
                            gtgt->GetLinkInterfaceDependentNumberMinProperty(
                                                propertyName,
                                                context->Config);
        return propContent ? propContent : "";
        }
      if (gtgt->IsLinkInterfaceDependentNumberMaxProperty(propertyName,
                                                          context->Config))
        {
        context->HadContextSensitiveCondition = true;
        const char *propContent =
                            gtgt->GetLinkInterfaceDependentNumberMaxProperty(
                                                propertyName,
                                                context->Config);
        return propContent ? propContent : "";
        }
      }
    if(!interfacePropertyName.empty())
      {
      std::string result = this->EvaluateDependentExpression(prop,
                                        context->Makefile, context,
                                        headTarget, target, &dagChecker);
      if (!linkedTargetsContent.empty())
        {
        result += (result.empty() ? "" : ";") + linkedTargetsContent;
        }
      return result;
      }
    return prop;
  }
} targetPropertyNode;

//----------------------------------------------------------------------------
static const struct TargetNameNode : public cmGeneratorExpressionNode
{
  TargetNameNode() {}

  virtual bool GeneratesContent() const { return true; }

  virtual bool AcceptsArbitraryContentParameter() const { return true; }
  virtual bool RequiresLiteralInput() const { return true; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *,
                       const GeneratorExpressionContent *,
                       cmGeneratorExpressionDAGChecker *) const
  {
    return parameters.front();
  }

  virtual int NumExpectedParameters() const { return 1; }

} targetNameNode;

//----------------------------------------------------------------------------
static const struct TargetObjectsNode : public cmGeneratorExpressionNode
{
  TargetObjectsNode() {}

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *) const
  {
    if (!context->EvaluateForBuildsystem)
      {
      std::ostringstream e;
      e << "The evaluation of the TARGET_OBJECTS generator expression "
        "is only suitable for consumption by CMake.  It is not suitable "
        "for writing out elsewhere.";
      reportError(context, content->GetOriginalExpression(), e.str());
      return std::string();
      }

    std::string tgtName = parameters.front();
    cmGeneratorTarget* gt =
                context->Makefile->FindGeneratorTargetToUse(tgtName);
    if (!gt)
      {
      std::ostringstream e;
      e << "Objects of target \"" << tgtName
        << "\" referenced but no such target exists.";
      reportError(context, content->GetOriginalExpression(), e.str());
      return std::string();
      }
    if (gt->GetType() != cmTarget::OBJECT_LIBRARY)
      {
      std::ostringstream e;
      e << "Objects of target \"" << tgtName
        << "\" referenced but is not an OBJECT library.";
      reportError(context, content->GetOriginalExpression(), e.str());
      return std::string();
      }

    std::vector<cmSourceFile const*> objectSources;
    gt->GetObjectSources(objectSources, context->Config);
    std::map<cmSourceFile const*, std::string> mapping;

    for(std::vector<cmSourceFile const*>::const_iterator it
        = objectSources.begin(); it != objectSources.end(); ++it)
      {
      mapping[*it];
      }

    gt->LocalGenerator->ComputeObjectFilenames(mapping, gt);

    std::string obj_dir = gt->ObjectDirectory;
    std::string result;
    const char* sep = "";
    for(std::vector<cmSourceFile const*>::const_iterator it
        = objectSources.begin(); it != objectSources.end(); ++it)
      {
      // Find the object file name corresponding to this source file.
      std::map<cmSourceFile const*, std::string>::const_iterator
        map_it = mapping.find(*it);
      // It must exist because we populated the mapping just above.
      assert(!map_it->second.empty());
      result += sep;
      std::string objFile = obj_dir + map_it->second;
      cmSourceFile* sf = context->Makefile->GetOrCreateSource(objFile, true);
      sf->SetObjectLibrary(tgtName);
      sf->SetProperty("EXTERNAL_OBJECT", "1");
      result += objFile;
      sep = ";";
      }
    return result;
  }
} targetObjectsNode;

//----------------------------------------------------------------------------
static const struct CompileFeaturesNode : public cmGeneratorExpressionNode
{
  CompileFeaturesNode() {}

  virtual int NumExpectedParameters() const { return OneOrMoreParameters; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *dagChecker) const
  {
    cmTarget const* target = context->HeadTarget;
    if (!target)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<COMPILE_FEATURE> may only be used with binary targets.  It may "
          "not be used with add_custom_command or add_custom_target.");
      return std::string();
      }
    context->HadHeadSensitiveCondition = true;

    typedef std::map<std::string, std::vector<std::string> > LangMap;
    static LangMap availableFeatures;

    LangMap testedFeatures;

    for (std::vector<std::string>::const_iterator it = parameters.begin();
        it != parameters.end(); ++it)
      {
      std::string error;
      std::string lang;
      if (!context->Makefile->CompileFeatureKnown(context->HeadTarget,
                                                  *it, lang, &error))
        {
        reportError(context, content->GetOriginalExpression(), error);
        return std::string();
        }
      testedFeatures[lang].push_back(*it);

      if (availableFeatures.find(lang) == availableFeatures.end())
        {
        const char* featuresKnown
                  = context->Makefile->CompileFeaturesAvailable(lang, &error);
        if (!featuresKnown)
          {
          reportError(context, content->GetOriginalExpression(), error);
          return std::string();
          }
        cmSystemTools::ExpandListArgument(featuresKnown,
                                          availableFeatures[lang]);
        }
      }

    bool evalLL = dagChecker && dagChecker->EvaluatingLinkLibraries();

    for (LangMap::const_iterator lit = testedFeatures.begin();
          lit != testedFeatures.end(); ++lit)
      {
      std::vector<std::string> const& langAvailable
                                              = availableFeatures[lit->first];
      const char* standardDefault = context->Makefile
        ->GetDefinition("CMAKE_" + lit->first + "_STANDARD_DEFAULT");
      for (std::vector<std::string>::const_iterator it = lit->second.begin();
          it != lit->second.end(); ++it)
        {
        if (std::find(langAvailable.begin(), langAvailable.end(), *it)
                                                      == langAvailable.end())
          {
          return "0";
          }
        if (standardDefault && !*standardDefault)
          {
          // This compiler has no notion of language standard levels.
          // All features known for the language are always available.
          continue;
          }
        if (!context->Makefile->HaveStandardAvailable(target,
                                                      lit->first, *it))
          {
          if (evalLL)
            {
            const char* l = target->GetProperty(lit->first + "_STANDARD");
            if (!l)
              {
              l = standardDefault;
              }
            assert(l);
            context->MaxLanguageStandard[target][lit->first] = l;
            }
          else
            {
            return "0";
            }
          }
        }
      }
    return "1";
  }
} compileFeaturesNode;

//----------------------------------------------------------------------------
static const char* targetPolicyWhitelist[] = {
  0
#define TARGET_POLICY_STRING(POLICY) \
  , #POLICY

  CM_FOR_EACH_TARGET_POLICY(TARGET_POLICY_STRING)

#undef TARGET_POLICY_STRING
};

cmPolicies::PolicyStatus statusForTarget(cmTarget const* tgt,
                                         const char *policy)
{
#define RETURN_POLICY(POLICY) \
  if (strcmp(policy, #POLICY) == 0) \
  { \
    return tgt->GetPolicyStatus ## POLICY (); \
  } \

  CM_FOR_EACH_TARGET_POLICY(RETURN_POLICY)

#undef RETURN_POLICY

  assert(0 && "Unreachable code. Not a valid policy");
  return cmPolicies::WARN;
}

cmPolicies::PolicyID policyForString(const char *policy_id)
{
#define RETURN_POLICY_ID(POLICY_ID) \
  if (strcmp(policy_id, #POLICY_ID) == 0) \
  { \
    return cmPolicies:: POLICY_ID; \
  } \

  CM_FOR_EACH_TARGET_POLICY(RETURN_POLICY_ID)

#undef RETURN_POLICY_ID

  assert(0 && "Unreachable code. Not a valid policy");
  return cmPolicies::CMP0002;
}

//----------------------------------------------------------------------------
static const struct TargetPolicyNode : public cmGeneratorExpressionNode
{
  TargetPolicyNode() {}

  virtual int NumExpectedParameters() const { return 1; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context ,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *) const
  {
    if (!context->HeadTarget)
      {
      reportError(context, content->GetOriginalExpression(),
          "$<TARGET_POLICY:prop> may only be used with binary targets.  It "
          "may not be used with add_custom_command or add_custom_target.");
      return std::string();
      }

    context->HadContextSensitiveCondition = true;
    context->HadHeadSensitiveCondition = true;

    for (size_t i = 1; i < cmArraySize(targetPolicyWhitelist); ++i)
      {
      const char *policy = targetPolicyWhitelist[i];
      if (parameters.front() == policy)
        {
        cmMakefile *mf = context->HeadTarget->GetMakefile();
        switch(statusForTarget(context->HeadTarget, policy))
          {
          case cmPolicies::WARN:
            mf->IssueMessage(cmake::AUTHOR_WARNING,
                        cmPolicies::GetPolicyWarning(policyForString(policy)));
          case cmPolicies::REQUIRED_IF_USED:
          case cmPolicies::REQUIRED_ALWAYS:
          case cmPolicies::OLD:
            return "0";
          case cmPolicies::NEW:
            return "1";
          }
        }
      }
    reportError(context, content->GetOriginalExpression(),
      "$<TARGET_POLICY:prop> may only be used with a limited number of "
      "policies.  Currently it may be used with the following policies:\n"

#define STRINGIFY_HELPER(X) #X
#define STRINGIFY(X) STRINGIFY_HELPER(X)

#define TARGET_POLICY_LIST_ITEM(POLICY) \
      " * " STRINGIFY(POLICY) "\n"

      CM_FOR_EACH_TARGET_POLICY(TARGET_POLICY_LIST_ITEM)

#undef TARGET_POLICY_LIST_ITEM
      );
    return std::string();
  }

} targetPolicyNode;

//----------------------------------------------------------------------------
static const struct InstallPrefixNode : public cmGeneratorExpressionNode
{
  InstallPrefixNode() {}

  virtual bool GeneratesContent() const { return true; }
  virtual int NumExpectedParameters() const { return 0; }

  std::string Evaluate(const std::vector<std::string> &,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *) const
  {
    reportError(context, content->GetOriginalExpression(),
                "INSTALL_PREFIX is a marker for install(EXPORT) only.  It "
                "should never be evaluated.");
    return std::string();
  }

} installPrefixNode;

//----------------------------------------------------------------------------
class ArtifactNameTag;
class ArtifactLinkerTag;
class ArtifactSonameTag;
class ArtifactPdbTag;

class ArtifactPathTag;
class ArtifactDirTag;

//----------------------------------------------------------------------------
template<typename ArtifactT>
struct TargetFilesystemArtifactResultCreator
{
  static std::string Create(cmGeneratorTarget* target,
                            cmGeneratorExpressionContext *context,
                            const GeneratorExpressionContent *content);
};

//----------------------------------------------------------------------------
template<>
struct TargetFilesystemArtifactResultCreator<ArtifactSonameTag>
{
  static std::string Create(cmGeneratorTarget* target,
                            cmGeneratorExpressionContext *context,
                            const GeneratorExpressionContent *content)
  {
    // The target soname file (.so.1).
    if(target->Target->IsDLLPlatform())
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "TARGET_SONAME_FILE is not allowed "
                    "for DLL target platforms.");
      return std::string();
      }
    if(target->GetType() != cmTarget::SHARED_LIBRARY)
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "TARGET_SONAME_FILE is allowed only for "
                    "SHARED libraries.");
      return std::string();
      }
    std::string result = target->GetDirectory(context->Config);
    result += "/";
    result += target->GetSOName(context->Config);
    return result;
  }
};

//----------------------------------------------------------------------------
template<>
struct TargetFilesystemArtifactResultCreator<ArtifactPdbTag>
{
  static std::string Create(cmGeneratorTarget* target,
                            cmGeneratorExpressionContext *context,
                            const GeneratorExpressionContent *content)
  {
    if (target->IsImported())
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "TARGET_PDB_FILE not allowed for IMPORTED targets.");
      return std::string();
      }

    std::string language = target->GetLinkerLanguage(context->Config);

    std::string pdbSupportVar = "CMAKE_" + language + "_LINKER_SUPPORTS_PDB";

    if(!context->Makefile->IsOn(pdbSupportVar))
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "TARGET_PDB_FILE is not supported by the target linker.");
      return std::string();
      }

    cmTarget::TargetType targetType = target->Target->GetType();

    if(targetType != cmTarget::SHARED_LIBRARY &&
       targetType != cmTarget::MODULE_LIBRARY &&
       targetType != cmTarget::EXECUTABLE)
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "TARGET_PDB_FILE is allowed only for "
                    "targets with linker created artifacts.");
      return std::string();
      }

    std::string result = target->GetPDBDirectory(context->Config);
    result += "/";
    result += target->GetPDBName(context->Config);
    return result;
  }
};

//----------------------------------------------------------------------------
template<>
struct TargetFilesystemArtifactResultCreator<ArtifactLinkerTag>
{
  static std::string Create(cmGeneratorTarget* target,
                            cmGeneratorExpressionContext *context,
                            const GeneratorExpressionContent *content)
  {
    // The file used to link to the target (.so, .lib, .a).
    if(!target->Target->IsLinkable())
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "TARGET_LINKER_FILE is allowed only for libraries and "
                    "executables with ENABLE_EXPORTS.");
      return std::string();
      }
    return target->GetFullPath(context->Config,
                               target->Target->HasImportLibrary());
  }
};

//----------------------------------------------------------------------------
template<>
struct TargetFilesystemArtifactResultCreator<ArtifactNameTag>
{
  static std::string Create(cmGeneratorTarget* target,
                            cmGeneratorExpressionContext *context,
                            const GeneratorExpressionContent *)
  {
    return target->GetFullPath(context->Config, false, true);
  }
};


//----------------------------------------------------------------------------
template<typename ArtifactT>
struct TargetFilesystemArtifactResultGetter
{
  static std::string Get(const std::string &result);
};

//----------------------------------------------------------------------------
template<>
struct TargetFilesystemArtifactResultGetter<ArtifactNameTag>
{
  static std::string Get(const std::string &result)
  { return cmSystemTools::GetFilenameName(result); }
};

//----------------------------------------------------------------------------
template<>
struct TargetFilesystemArtifactResultGetter<ArtifactDirTag>
{
  static std::string Get(const std::string &result)
  { return cmSystemTools::GetFilenamePath(result); }
};

//----------------------------------------------------------------------------
template<>
struct TargetFilesystemArtifactResultGetter<ArtifactPathTag>
{
  static std::string Get(const std::string &result)
  { return result; }
};

//----------------------------------------------------------------------------
template<typename ArtifactT, typename ComponentT>
struct TargetFilesystemArtifact : public cmGeneratorExpressionNode
{
  TargetFilesystemArtifact() {}

  virtual int NumExpectedParameters() const { return 1; }

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *dagChecker) const
  {
    // Lookup the referenced target.
    std::string name = *parameters.begin();

    if (!cmGeneratorExpression::IsValidTargetName(name))
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "Expression syntax not recognized.");
      return std::string();
      }
    cmGeneratorTarget* target =
        context->Makefile->FindGeneratorTargetToUse(name);
    if(!target)
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "No target \"" + name + "\"");
      return std::string();
      }
    if(target->GetType() >= cmTarget::OBJECT_LIBRARY &&
      target->GetType() != cmTarget::UNKNOWN_LIBRARY)
      {
      ::reportError(context, content->GetOriginalExpression(),
                  "Target \"" + name + "\" is not an executable or library.");
      return std::string();
      }
    if (dagChecker && (dagChecker->EvaluatingLinkLibraries(name.c_str())
        || (dagChecker->EvaluatingSources()
          && name == dagChecker->TopTarget())))
      {
      ::reportError(context, content->GetOriginalExpression(),
                    "Expressions which require the linker language may not "
                    "be used while evaluating link libraries");
      return std::string();
      }
    context->DependTargets.insert(target->Target);
    context->AllTargets.insert(target->Target);

    std::string result =
                TargetFilesystemArtifactResultCreator<ArtifactT>::Create(
                          target,
                          context,
                          content);
    if (context->HadError)
      {
      return std::string();
      }
    return
        TargetFilesystemArtifactResultGetter<ComponentT>::Get(result);
  }
};

//----------------------------------------------------------------------------
template<typename ArtifactT>
struct TargetFilesystemArtifactNodeGroup
{
  TargetFilesystemArtifactNodeGroup()
    {
    }

  TargetFilesystemArtifact<ArtifactT, ArtifactPathTag> File;
  TargetFilesystemArtifact<ArtifactT, ArtifactNameTag> FileName;
  TargetFilesystemArtifact<ArtifactT, ArtifactDirTag> FileDir;
};

//----------------------------------------------------------------------------
static const
TargetFilesystemArtifactNodeGroup<ArtifactNameTag> targetNodeGroup;

static const
TargetFilesystemArtifactNodeGroup<ArtifactLinkerTag> targetLinkerNodeGroup;

static const
TargetFilesystemArtifactNodeGroup<ArtifactSonameTag> targetSoNameNodeGroup;

static const
TargetFilesystemArtifactNodeGroup<ArtifactPdbTag> targetPdbNodeGroup;

//----------------------------------------------------------------------------
static const struct ShellPathNode : public cmGeneratorExpressionNode
{
  ShellPathNode() {}

  std::string Evaluate(const std::vector<std::string> &parameters,
                       cmGeneratorExpressionContext *context,
                       const GeneratorExpressionContent *content,
                       cmGeneratorExpressionDAGChecker *) const
  {
    if (!cmSystemTools::FileIsFullPath(parameters.front()))
      {
      reportError(context, content->GetOriginalExpression(),
                  "\"" + parameters.front() + "\" is not an absolute path.");
      return std::string();
      }
    cmOutputConverter converter(context->Makefile->GetStateSnapshot());
    return converter.ConvertDirectorySeparatorsForShell(parameters.front());
  }
} shellPathNode;

//----------------------------------------------------------------------------
const cmGeneratorExpressionNode*
cmGeneratorExpressionNode::GetNode(const std::string &identifier)
{
  typedef std::map<std::string, const cmGeneratorExpressionNode*> NodeMap;
  static NodeMap nodeMap;
  if (nodeMap.empty())
    {
    nodeMap["0"] = &zeroNode;
    nodeMap["1"] = &oneNode;
    nodeMap["AND"] = &andNode;
    nodeMap["OR"] = &orNode;
    nodeMap["NOT"] = &notNode;
    nodeMap["C_COMPILER_ID"] = &cCompilerIdNode;
    nodeMap["CXX_COMPILER_ID"] = &cxxCompilerIdNode;
    nodeMap["VERSION_GREATER"] = &versionGreaterNode;
    nodeMap["VERSION_LESS"] = &versionLessNode;
    nodeMap["VERSION_EQUAL"] = &versionEqualNode;
    nodeMap["C_COMPILER_VERSION"] = &cCompilerVersionNode;
    nodeMap["CXX_COMPILER_VERSION"] = &cxxCompilerVersionNode;
    nodeMap["PLATFORM_ID"] = &platformIdNode;
    nodeMap["COMPILE_FEATURES"] = &compileFeaturesNode;
    nodeMap["CONFIGURATION"] = &configurationNode;
    nodeMap["CONFIG"] = &configurationTestNode;
    nodeMap["TARGET_FILE"] = &targetNodeGroup.File;
    nodeMap["TARGET_LINKER_FILE"] = &targetLinkerNodeGroup.File;
    nodeMap["TARGET_SONAME_FILE"] = &targetSoNameNodeGroup.File;
    nodeMap["TARGET_PDB_FILE"] = &targetPdbNodeGroup.File;
    nodeMap["TARGET_FILE_NAME"] = &targetNodeGroup.FileName;
    nodeMap["TARGET_LINKER_FILE_NAME"] = &targetLinkerNodeGroup.FileName;
    nodeMap["TARGET_SONAME_FILE_NAME"] = &targetSoNameNodeGroup.FileName;
    nodeMap["TARGET_PDB_FILE_NAME"] = &targetPdbNodeGroup.FileName;
    nodeMap["TARGET_FILE_DIR"] = &targetNodeGroup.FileDir;
    nodeMap["TARGET_LINKER_FILE_DIR"] = &targetLinkerNodeGroup.FileDir;
    nodeMap["TARGET_SONAME_FILE_DIR"] = &targetSoNameNodeGroup.FileDir;
    nodeMap["TARGET_PDB_FILE_DIR"] = &targetPdbNodeGroup.FileDir;
    nodeMap["STREQUAL"] = &strEqualNode;
    nodeMap["EQUAL"] = &equalNode;
    nodeMap["LOWER_CASE"] = &lowerCaseNode;
    nodeMap["UPPER_CASE"] = &upperCaseNode;
    nodeMap["MAKE_C_IDENTIFIER"] = &makeCIdentifierNode;
    nodeMap["BOOL"] = &boolNode;
    nodeMap["ANGLE-R"] = &angle_rNode;
    nodeMap["COMMA"] = &commaNode;
    nodeMap["SEMICOLON"] = &semicolonNode;
    nodeMap["TARGET_PROPERTY"] = &targetPropertyNode;
    nodeMap["TARGET_NAME"] = &targetNameNode;
    nodeMap["TARGET_OBJECTS"] = &targetObjectsNode;
    nodeMap["TARGET_POLICY"] = &targetPolicyNode;
    nodeMap["BUILD_INTERFACE"] = &buildInterfaceNode;
    nodeMap["INSTALL_INTERFACE"] = &installInterfaceNode;
    nodeMap["INSTALL_PREFIX"] = &installPrefixNode;
    nodeMap["JOIN"] = &joinNode;
    nodeMap["LINK_ONLY"] = &linkOnlyNode;
    nodeMap["COMPILE_LANGUAGE"] = &languageNode;
    nodeMap["SHELL_PATH"] = &shellPathNode;
    }
  NodeMap::const_iterator i = nodeMap.find(identifier);
  if (i == nodeMap.end())
    {
    return 0;
    }
  return i->second;
}

//----------------------------------------------------------------------------
void reportError(cmGeneratorExpressionContext *context,
                 const std::string &expr, const std::string &result)
{
  context->HadError = true;
  if (context->Quiet)
    {
    return;
    }

  std::ostringstream e;
  e << "Error evaluating generator expression:\n"
    << "  " << expr << "\n"
    << result;
  context->Makefile->GetCMakeInstance()
    ->IssueMessage(cmake::FATAL_ERROR, e.str(),
                    context->Backtrace);
}