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/***************************************************************************\
|* Function Parser for C++ v4.5.2 *|
|*-------------------------------------------------------------------------*|
|* Copyright: Juha Nieminen, Joel Yliluoma *|
|* *|
|* This library is distributed under the terms of the *|
|* GNU Lesser General Public License version 3. *|
|* (See lgpl.txt and gpl.txt for the license text.) *|
\***************************************************************************/
// NOTE:
// This file contains only internal types for the function parser library.
// You don't need to include this file in your code. Include "fparser.hh"
// only.
#ifndef ONCE_FPARSER_TYPES_H_
#define ONCE_FPARSER_TYPES_H_
#include "../fpconfig.hh"
#include <cstring>
#ifdef ONCE_FPARSER_H_
#include <map>
#endif
namespace FUNCTIONPARSERTYPES
{
enum OPCODE
{
// The order of opcodes in the function list must
// match that which is in the Functions[] array.
cAbs,
cAcos, cAcosh,
cArg, /* get the phase angle of a complex value */
cAsin, cAsinh,
cAtan, cAtan2, cAtanh,
cCbrt, cCeil,
cConj, /* get the complex conjugate of a complex value */
cCos, cCosh, cCot, cCsc,
cExp, cExp2, cFloor, cHypot,
cIf,
cImag, /* get imaginary part of a complex value */
cInt, cLog, cLog10, cLog2, cMax, cMin,
cPolar, /* create a complex number from polar coordinates */
cPow,
cReal, /* get real part of a complex value */
cSec, cSin, cSinh, cSqrt, cTan, cTanh,
cTrunc,
// These do not need any ordering:
// Except that if you change the order of {eq,neq,lt,le,gt,ge}, you
// must also change the order in ConstantFolding_ComparisonOperations().
cImmed, cJump,
cNeg, cAdd, cSub, cMul, cDiv, cMod,
cEqual, cNEqual, cLess, cLessOrEq, cGreater, cGreaterOrEq,
cNot, cAnd, cOr,
cNotNot, /* Protects the double-not sequence from optimizations */
cDeg, cRad, /* Multiplication and division by 180 / pi */
cFCall, cPCall,
#ifdef FP_SUPPORT_OPTIMIZER
cPopNMov, /* cPopNMov(x,y) moves [y] to [x] and deletes anything
* above [x]. Used for disposing of temporaries.
*/
cLog2by, /* log2by(x,y) = log2(x) * y */
cNop, /* Used by fpoptimizer internally; should not occur in bytecode */
#endif
cSinCos, /* sin(x) followed by cos(x) (two values are pushed to stack) */
cSinhCosh, /* hyperbolic equivalent of sincos */
cAbsAnd, /* As cAnd, but assume both operands are absolute values */
cAbsOr, /* As cOr, but assume both operands are absolute values */
cAbsNot, /* As cAbsNot, but assume the operand is an absolute value */
cAbsNotNot, /* As cAbsNotNot, but assume the operand is an absolute value */
cAbsIf, /* As cAbsIf, but assume the 1st operand is an absolute value */
cDup, /* Duplicates the last value in the stack: Push [Stacktop] */
cFetch, /* Same as Dup, except with absolute index
* (next value is index) */
cInv, /* Inverts the last value in the stack (x = 1/x) */
cSqr, /* squares the last operand in the stack, no push/pop */
cRDiv, /* reverse division (not x/y, but y/x) */
cRSub, /* reverse subtraction (not x-y, but y-x) */
cRSqrt, /* inverse square-root (1/sqrt(x)) */
VarBegin
};
#ifdef ONCE_FPARSER_H_
struct FuncDefinition
{
enum FunctionFlags
{
Enabled = 0x01,
AngleIn = 0x02,
AngleOut = 0x04,
OkForInt = 0x08,
ComplexOnly = 0x10
};
#ifdef FUNCTIONPARSER_SUPPORT_DEBUGGING
const char name[8];
#endif
unsigned params : 8;
unsigned flags : 8;
inline bool okForInt() const { return (flags & OkForInt) != 0; }
inline bool complexOnly() const { return (flags & ComplexOnly) != 0; }
};
#ifdef FUNCTIONPARSER_SUPPORT_DEBUGGING
# define FP_FNAME(n) n,
#else
# define FP_FNAME(n)
#endif
// This list must be in the same order as that in OPCODE enum,
// because the opcode value is used to index this array, and
// the pointer to array element is used for generating the opcode.
const FuncDefinition Functions[]=
{
/*cAbs */ { FP_FNAME("abs") 1, FuncDefinition::OkForInt },
/*cAcos */ { FP_FNAME("acos") 1, FuncDefinition::AngleOut },
/*cAcosh*/ { FP_FNAME("acosh") 1, FuncDefinition::AngleOut },
/*cArg */ { FP_FNAME("arg") 1, FuncDefinition::AngleOut | FuncDefinition::ComplexOnly },
/*cAsin */ { FP_FNAME("asin") 1, FuncDefinition::AngleOut },
/*cAsinh*/ { FP_FNAME("asinh") 1, FuncDefinition::AngleOut },
/*cAtan */ { FP_FNAME("atan") 1, FuncDefinition::AngleOut },
/*cAtan2*/ { FP_FNAME("atan2") 2, FuncDefinition::AngleOut },
/*cAtanh*/ { FP_FNAME("atanh") 1, 0 },
/*cCbrt */ { FP_FNAME("cbrt") 1, 0 },
/*cCeil */ { FP_FNAME("ceil") 1, 0 },
/*cConj */ { FP_FNAME("conj") 1, FuncDefinition::ComplexOnly },
/*cCos */ { FP_FNAME("cos") 1, FuncDefinition::AngleIn },
/*cCosh */ { FP_FNAME("cosh") 1, FuncDefinition::AngleIn },
/*cCot */ { FP_FNAME("cot") 1, FuncDefinition::AngleIn },
/*cCsc */ { FP_FNAME("csc") 1, FuncDefinition::AngleIn },
/*cExp */ { FP_FNAME("exp") 1, 0 },
/*cExp2 */ { FP_FNAME("exp2") 1, 0 },
/*cFloor*/ { FP_FNAME("floor") 1, 0 },
/*cHypot*/ { FP_FNAME("hypot") 2, 0 },
/*cIf */ { FP_FNAME("if") 0, FuncDefinition::OkForInt },
/*cImag */ { FP_FNAME("imag") 1, FuncDefinition::ComplexOnly },
/*cInt */ { FP_FNAME("int") 1, 0 },
/*cLog */ { FP_FNAME("log") 1, 0 },
/*cLog10*/ { FP_FNAME("log10") 1, 0 },
/*cLog2 */ { FP_FNAME("log2") 1, 0 },
/*cMax */ { FP_FNAME("max") 2, FuncDefinition::OkForInt },
/*cMin */ { FP_FNAME("min") 2, FuncDefinition::OkForInt },
/*cPolar */{ FP_FNAME("polar") 2, FuncDefinition::ComplexOnly | FuncDefinition::AngleIn },
/*cPow */ { FP_FNAME("pow") 2, 0 },
/*cReal */ { FP_FNAME("real") 1, FuncDefinition::ComplexOnly },
/*cSec */ { FP_FNAME("sec") 1, FuncDefinition::AngleIn },
/*cSin */ { FP_FNAME("sin") 1, FuncDefinition::AngleIn },
/*cSinh */ { FP_FNAME("sinh") 1, FuncDefinition::AngleIn },
/*cSqrt */ { FP_FNAME("sqrt") 1, 0 },
/*cTan */ { FP_FNAME("tan") 1, FuncDefinition::AngleIn },
/*cTanh */ { FP_FNAME("tanh") 1, FuncDefinition::AngleIn },
/*cTrunc*/ { FP_FNAME("trunc") 1, 0 }
};
#undef FP_FNAME
struct NamePtr
{
const char* name;
unsigned nameLength;
NamePtr(const char* n, unsigned l): name(n), nameLength(l) {}
inline bool operator==(const NamePtr& rhs) const
{
return nameLength == rhs.nameLength
&& std::memcmp(name, rhs.name, nameLength) == 0;
}
inline bool operator<(const NamePtr& rhs) const
{
for(unsigned i = 0; i < nameLength; ++i)
{
if(i == rhs.nameLength) return false;
const char c1 = name[i], c2 = rhs.name[i];
if(c1 < c2) return true;
if(c2 < c1) return false;
}
return nameLength < rhs.nameLength;
}
};
template<typename Value_t>
struct NameData
{
enum DataType { CONSTANT, UNIT, FUNC_PTR, PARSER_PTR, VARIABLE };
DataType type;
unsigned index;
Value_t value;
NameData(DataType t, unsigned v) : type(t), index(v), value() { }
NameData(DataType t, Value_t v) : type(t), index(), value(v) { }
NameData() { }
};
template<typename Value_t>
class NamePtrsMap: public
std::map<FUNCTIONPARSERTYPES::NamePtr,
FUNCTIONPARSERTYPES::NameData<Value_t> >
{
};
const unsigned FUNC_AMOUNT = sizeof(Functions)/sizeof(Functions[0]);
#endif // ONCE_FPARSER_H_
}
#ifdef ONCE_FPARSER_H_
#include <vector>
template<typename Value_t>
struct FunctionParserBase<Value_t>::Data
{
unsigned mReferenceCounter;
char mDelimiterChar;
ParseErrorType mParseErrorType;
int mEvalErrorType;
bool mUseDegreeConversion;
bool mHasByteCodeFlags;
const char* mErrorLocation;
unsigned mVariablesAmount;
std::string mVariablesString;
FUNCTIONPARSERTYPES::NamePtrsMap<Value_t> mNamePtrs;
struct InlineVariable
{
FUNCTIONPARSERTYPES::NamePtr mName;
unsigned mFetchIndex;
};
typedef std::vector<InlineVariable> InlineVarNamesContainer;
InlineVarNamesContainer mInlineVarNames;
struct FuncWrapperPtrData
{
/* Only one of the pointers will point to a function, the other
will be null. (The raw function pointer could be implemented
as a FunctionWrapper specialization, but it's done like this
for efficiency.) */
FunctionPtr mRawFuncPtr;
FunctionWrapper* mFuncWrapperPtr;
unsigned mParams;
FuncWrapperPtrData();
~FuncWrapperPtrData();
FuncWrapperPtrData(const FuncWrapperPtrData&);
FuncWrapperPtrData& operator=(const FuncWrapperPtrData&);
};
struct FuncParserPtrData
{
FunctionParserBase<Value_t>* mParserPtr;
unsigned mParams;
};
std::vector<FuncWrapperPtrData> mFuncPtrs;
std::vector<FuncParserPtrData> mFuncParsers;
std::vector<unsigned> mByteCode;
std::vector<Value_t> mImmed;
#if !defined(FP_USE_THREAD_SAFE_EVAL) && \
!defined(FP_USE_THREAD_SAFE_EVAL_WITH_ALLOCA)
std::vector<Value_t> mStack;
// Note: When mStack exists,
// mStack.size() and mStackSize are mutually redundant.
#endif
unsigned mStackSize;
Data();
Data(const Data&);
Data& operator=(const Data&); // not implemented on purpose
~Data();
};
#endif
//#include "fpaux.hh"
#endif
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