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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
#ifndef TGRAMMAR_INCLUDED
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Toshihiro Shimizu |
890ddd |
#define TGRAMMAR_INCLUDED
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
// TnzCore includes
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Toshihiro Shimizu |
890ddd |
#include "tcommon.h"
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
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// TnzBase includes
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Toshihiro Shimizu |
890ddd |
#include "ttokenizer.h"
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
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#undef DVAPI
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Toshihiro Shimizu |
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#undef DVVAR
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Toshihiro Shimizu |
890ddd |
#ifdef TNZBASE_EXPORTS
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Toshihiro Shimizu |
890ddd |
#define DVAPI DV_EXPORT_API
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Toshihiro Shimizu |
890ddd |
#define DVVAR DV_EXPORT_VAR
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Toshihiro Shimizu |
890ddd |
#else
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Toshihiro Shimizu |
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#define DVAPI DV_IMPORT_API
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Toshihiro Shimizu |
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#define DVVAR DV_IMPORT_VAR
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Toshihiro Shimizu |
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#endif
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Toshihiro Shimizu |
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Toshihiro Shimizu |
890ddd |
//==============================================
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
// Forward declarations
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
class TDoubleParam;
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Toshihiro Shimizu |
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class TUnit;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
namespace TSyntax
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Toshihiro Shimizu |
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{
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Toshihiro Shimizu |
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class Token;
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Toshihiro Shimizu |
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class Calculator;
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Toshihiro Shimizu |
890ddd |
}
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
//==============================================
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
// Calculator & calculator nodes
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
namespace TSyntax
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Toshihiro Shimizu |
890ddd |
{
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
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class DVAPI CalculatorNodeVisitor
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Toshihiro Shimizu |
890ddd |
{
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Toshihiro Shimizu |
890ddd |
public:
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Toshihiro Shimizu |
890ddd |
CalculatorNodeVisitor() {}
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Toshihiro Shimizu |
890ddd |
virtual ~CalculatorNodeVisitor() {}
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Toshihiro Shimizu |
890ddd |
};
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
class DVAPI CalculatorNode
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Toshihiro Shimizu |
890ddd |
{
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Toshihiro Shimizu |
890ddd |
Calculator *m_calculator;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
public:
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Toshihiro Shimizu |
890ddd |
CalculatorNode(Calculator *calculator) : m_calculator(calculator) {}
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Toshihiro Shimizu |
890ddd |
virtual ~CalculatorNode() {}
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
Calculator *getCalculator() const { return m_calculator; }
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
enum { T,
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Toshihiro Shimizu |
890ddd |
FRAME,
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Toshihiro Shimizu |
890ddd |
RFRAME };
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Toshihiro Shimizu |
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virtual double compute(double vars[3]) const = 0;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
virtual void accept(CalculatorNodeVisitor &visitor) = 0;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
private:
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Toshihiro Shimizu |
890ddd |
// Non-copyable
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Toshihiro Shimizu |
890ddd |
CalculatorNode(const CalculatorNode &);
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Toshihiro Shimizu |
890ddd |
CalculatorNode &operator=(const CalculatorNode &);
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Toshihiro Shimizu |
890ddd |
};
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
class DVAPI Calculator
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Toshihiro Shimizu |
890ddd |
{
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Toshihiro Shimizu |
890ddd |
CalculatorNode *m_rootNode; //!< (owned) Root calculator node
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
TDoubleParam *m_param; //!< (not owned) Owner of the calculator object
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Toshihiro Shimizu |
890ddd |
const TUnit *m_unit; //!< (not owned)
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
public:
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Toshihiro Shimizu |
890ddd |
Calculator();
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Toshihiro Shimizu |
890ddd |
virtual ~Calculator();
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
void setRootNode(CalculatorNode *node);
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
double compute(double t, double frame, double rframe)
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Toshihiro Shimizu |
890ddd |
{
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Toshihiro Shimizu |
890ddd |
double vars[3];
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Toshihiro Shimizu |
890ddd |
vars[0] = t, vars[1] = frame, vars[2] = rframe;
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Toshihiro Shimizu |
890ddd |
return m_rootNode->compute(vars);
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Toshihiro Shimizu |
890ddd |
}
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
void accept(CalculatorNodeVisitor &visitor) { m_rootNode->accept(visitor); }
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
typedef double Calculator::*Variable;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
void setOwnerParameter(TDoubleParam *param) { m_param = param; }
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Toshihiro Shimizu |
890ddd |
TDoubleParam *getOwnerParameter() const { return m_param; }
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
const TUnit *getUnit() const { return m_unit; }
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Toshihiro Shimizu |
890ddd |
void setUnit(const TUnit *unit) { m_unit = unit; }
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
private:
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Toshihiro Shimizu |
890ddd |
// not copyable
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Toshihiro Shimizu |
890ddd |
Calculator(const Calculator &);
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Toshihiro Shimizu |
890ddd |
Calculator &operator=(const Calculator &);
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Toshihiro Shimizu |
890ddd |
};
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
class DVAPI NumberNode : public CalculatorNode
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Toshihiro Shimizu |
890ddd |
{
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Toshihiro Shimizu |
890ddd |
double m_value;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
public:
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Toshihiro Shimizu |
890ddd |
NumberNode(Calculator *calc, double value) : CalculatorNode(calc), m_value(value) {}
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
double compute(double vars[3]) const { return m_value; }
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
void accept(CalculatorNodeVisitor &visitor) {}
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Toshihiro Shimizu |
890ddd |
};
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
class DVAPI VariableNode : public CalculatorNode
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Toshihiro Shimizu |
890ddd |
{
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Toshihiro Shimizu |
890ddd |
int m_varIdx;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
public:
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Toshihiro Shimizu |
890ddd |
VariableNode(Calculator *calc, int varIdx)
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Toshihiro Shimizu |
890ddd |
: CalculatorNode(calc), m_varIdx(varIdx) {}
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
double compute(double vars[3]) const { return vars[m_varIdx]; }
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
void accept(CalculatorNodeVisitor &visitor) {}
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Toshihiro Shimizu |
890ddd |
};
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
// Pattern
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
enum TokenType {
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Toshihiro Shimizu |
890ddd |
Unknown = 0,
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
Number,
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Toshihiro Shimizu |
890ddd |
Constant,
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Toshihiro Shimizu |
890ddd |
Variable,
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Toshihiro Shimizu |
890ddd |
Operator,
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Toshihiro Shimizu |
890ddd |
Parenthesis,
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Toshihiro Shimizu |
890ddd |
Function,
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Toshihiro Shimizu |
890ddd |
Comma,
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
UnexpectedToken = -100,
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Toshihiro Shimizu |
890ddd |
Eos,
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Toshihiro Shimizu |
890ddd |
Mismatch,
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
InternalError = -200
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Toshihiro Shimizu |
890ddd |
};
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
class DVAPI Pattern
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Toshihiro Shimizu |
890ddd |
{
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Toshihiro Shimizu |
890ddd |
string m_description;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
public:
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Toshihiro Shimizu |
890ddd |
Pattern() {}
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Toshihiro Shimizu |
890ddd |
virtual ~Pattern() {}
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
virtual string getFirstKeyword() const { return ""; }
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Toshihiro Shimizu |
890ddd |
virtual void getAcceptableKeywords(std::vector<std::string> &keywords) const {}</std::string>
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Toshihiro Shimizu |
890ddd |
virtual int getPriority() const { return 0; }
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Toshihiro Shimizu |
890ddd |
virtual bool expressionExpected(const std::vector<token> &previousTokens) const { return false; }</token>
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Toshihiro Shimizu |
890ddd |
virtual bool matchToken(const std::vector<token> &previousTokens, const Token &token) const = 0;</token>
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Toshihiro Shimizu |
890ddd |
virtual bool isFinished(const std::vector<token> &previousTokens, const Token &token) const = 0;</token>
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Toshihiro Shimizu |
890ddd |
virtual bool isComplete(const std::vector<token> &previousTokens, const Token &token) const { return isFinished(previousTokens, token); }</token>
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Toshihiro Shimizu |
890ddd |
virtual TokenType getTokenType(const std::vector<token> &previousTokens, const Token &token) const = 0; // see also SyntaxToken in tparser.h</token>
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
virtual void createNode(
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Toshihiro Shimizu |
890ddd |
Calculator *calc,
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Toshihiro Shimizu |
890ddd |
std::vector<calculatornode *=""> &stack,</calculatornode>
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Toshihiro Shimizu |
890ddd |
const std::vector<token> &tokens) const = 0;</token>
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
string getDescription() const { return m_description; }
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Toshihiro Shimizu |
890ddd |
void setDescription(string description) { m_description = description; }
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
// helper methods
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Toshihiro Shimizu |
890ddd |
CalculatorNode *popNode(std::vector<calculatornode *=""> &stack) const;</calculatornode>
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Toshihiro Shimizu |
890ddd |
};
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
//-------------------------------------------------------------------
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
class DVAPI Grammar
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Toshihiro Shimizu |
890ddd |
{
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Toshihiro Shimizu |
890ddd |
class Imp;
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Toshihiro Shimizu |
890ddd |
Imp *m_imp;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
public:
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Toshihiro Shimizu |
890ddd |
Grammar();
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Toshihiro Shimizu |
890ddd |
~Grammar();
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
void addPattern(Pattern *pattern); // take ownership
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
enum Position { ExpressionStart,
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Toshihiro Shimizu |
890ddd |
ExpressionEnd };
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
// note: returns a matching pattern (or 0 if no pattern matches)
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Toshihiro Shimizu |
890ddd |
const Pattern *getPattern(Position position, const Token &token) const;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
// returns matching <keywords, comment=""></keywords,>
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Toshihiro Shimizu |
890ddd |
typedef std::vector<std::pair<string, string="">> Suggestions;</std::pair<string,>
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Toshihiro Shimizu |
890ddd |
void getSuggestions(Suggestions &suggetsions, Position position) const;
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
private:
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Toshihiro Shimizu |
890ddd |
// not implemented
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Toshihiro Shimizu |
890ddd |
Grammar(const Grammar &);
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Toshihiro Shimizu |
890ddd |
Grammar &operator=(const Grammar &);
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Toshihiro Shimizu |
890ddd |
};
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
} // namespace TSyntax
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|
Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
#endif // TGRAMMAR_INCLUDED
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