mirror of
https://github.com/vcmi/vcmi.git
synced 2024-11-24 08:32:34 +02:00
557 lines
15 KiB
C++
557 lines
15 KiB
C++
#pragma once
|
|
#include "../global.h"
|
|
#include "ERMParser.h"
|
|
#include "IGameEventsReceiver.h"
|
|
#include "ERMScriptModule.h"
|
|
|
|
|
|
/*
|
|
* ERMInterpreter.h, part of VCMI engine
|
|
*
|
|
* Authors: listed in file AUTHORS in main folder
|
|
*
|
|
* License: GNU General Public License v2.0 or later
|
|
* Full text of license available in license.txt file, in main folder
|
|
*
|
|
*/
|
|
|
|
namespace VERMInterpreter
|
|
{
|
|
using namespace ERM;
|
|
|
|
//different exceptions that can be thrown during interpreting
|
|
class EInterpreterProblem : public std::exception
|
|
{
|
|
std::string problem;
|
|
public:
|
|
const char * what() const throw() OVERRIDE
|
|
{
|
|
return problem.c_str();
|
|
}
|
|
~EInterpreterProblem() throw()
|
|
{}
|
|
EInterpreterProblem(const std::string & problemDesc) : problem(problemDesc)
|
|
{}
|
|
};
|
|
|
|
struct ESymbolNotFound : public EInterpreterProblem
|
|
{
|
|
ESymbolNotFound(const std::string & sym) :
|
|
EInterpreterProblem(std::string("Symbol \"") + sym + std::string("\" not found!"))
|
|
{}
|
|
};
|
|
|
|
struct EInvalidTrigger : public EInterpreterProblem
|
|
{
|
|
EInvalidTrigger(const std::string & sym) :
|
|
EInterpreterProblem(std::string("Trigger \"") + sym + std::string("\" is invalid!"))
|
|
{}
|
|
};
|
|
|
|
struct EUsageOfUndefinedMacro : public EInterpreterProblem
|
|
{
|
|
EUsageOfUndefinedMacro(const std::string & macro) :
|
|
EInterpreterProblem(std::string("Macro ") + macro + " is undefined")
|
|
{}
|
|
};
|
|
|
|
struct EIexpProblem : public EInterpreterProblem
|
|
{
|
|
EIexpProblem(const std::string & desc) :
|
|
EInterpreterProblem(desc)
|
|
{}
|
|
};
|
|
|
|
struct ELineProblem : public EInterpreterProblem
|
|
{
|
|
ELineProblem(const std::string & desc) :
|
|
EInterpreterProblem(desc)
|
|
{}
|
|
};
|
|
|
|
struct EExecutionError : public EInterpreterProblem
|
|
{
|
|
EExecutionError(const std::string & desc) :
|
|
EInterpreterProblem(desc)
|
|
{}
|
|
};
|
|
|
|
//internal interpreter error related to execution
|
|
struct EInterpreterError : public EExecutionError
|
|
{
|
|
EInterpreterError(const std::string & desc) :
|
|
EExecutionError(desc)
|
|
{}
|
|
};
|
|
|
|
//wrong script
|
|
struct EScriptExecError : public EExecutionError
|
|
{
|
|
EScriptExecError(const std::string & desc) :
|
|
EExecutionError(desc)
|
|
{}
|
|
};
|
|
|
|
|
|
///main environment class, manages symbols
|
|
class Environment
|
|
{
|
|
private:
|
|
std::map<std::string, TVOption> symbols;
|
|
Environment * parent;
|
|
|
|
public:
|
|
bool isBound(const std::string & name, bool globalOnly) const;
|
|
|
|
TVOption retrieveValue(const std::string & name) const;
|
|
|
|
enum EUnbindMode{LOCAL, RECURSIVE_UNTIL_HIT, FULLY_RECURSIVE};
|
|
///returns true if symbol was really unbound
|
|
bool unbind(const std::string & name, EUnbindMode mode);
|
|
};
|
|
|
|
// All numeric variables are integer variables and have a range of -2147483647...+2147483647
|
|
// c stores game active day number //indirect variable
|
|
// d current value //not an actual variable but a modifier
|
|
// e1..e100 Function floating point variables //local
|
|
// e-1..e-100 Trigger local floating point variables //local
|
|
// 'f'..'t' Standard variables ('quick variables') //global
|
|
// v1..v1000 Standard variables //global
|
|
// w1..w100 Hero variables
|
|
// w101..w200 Hero variables
|
|
// x1..x16 Function parameters //local
|
|
// y1..y100 Function local variables //local
|
|
// y-1..y-100 Trigger-based local integer variables //local
|
|
// z1..z1000 String variables //global
|
|
// z-1..z-10 Function local string variables //local
|
|
|
|
struct TriggerLocalVars
|
|
{
|
|
static const int EVAR_NUM = 100; //number of evar locals
|
|
|
|
static const int YVAR_NUM = 100; //number of yvar locals
|
|
TriggerLocalVars();
|
|
|
|
double & getEvar(int num);
|
|
int & getYvar(int num);
|
|
private:
|
|
double evar[EVAR_NUM]; //negative indices
|
|
int yvar[YVAR_NUM];
|
|
|
|
};
|
|
|
|
struct FunctionLocalVars
|
|
{
|
|
static const int NUM_PARAMETERS = 16; //number of function parameters
|
|
static const int NUM_LOCALS = 100;
|
|
static const int NUM_STRINGS = 10;
|
|
static const int NUM_FLOATINGS = 100;
|
|
|
|
int & getParam(int num);
|
|
int & getLocal(int num);
|
|
std::string & getString(int num);
|
|
double & getFloat(int num);
|
|
void reset();
|
|
private:
|
|
int params[NUM_PARAMETERS]; //x-vars
|
|
int locals[NUM_LOCALS]; //y-vars
|
|
std::string strings[NUM_STRINGS]; //z-vars (negative indices)
|
|
double floats[NUM_FLOATINGS]; //e-vars (positive indices)
|
|
};
|
|
|
|
struct ERMEnvironment
|
|
{
|
|
ERMEnvironment();
|
|
static const int NUM_QUICKS = 't' - 'f' + 1; //it should be 15
|
|
int & getQuickVar(const char letter); //'f' - 't' variables
|
|
int & getStandardVar(int num); //get v-variable
|
|
std::string & getZVar(int num);
|
|
bool & getFlag(int num);
|
|
|
|
static const int NUM_STANDARDS = 10000;
|
|
|
|
static const int NUM_STRINGS = 1000;
|
|
|
|
std::map<std::string, ERM::TVarExpNotMacro> macroBindings;
|
|
|
|
static const int NUM_FLAGS = 1000;
|
|
private:
|
|
int quickVars[NUM_QUICKS]; //referenced by letter ('f' to 't' inclusive)
|
|
int standardVars[NUM_STANDARDS]; //v-vars
|
|
std::string strings[NUM_STRINGS]; //z-vars (positive indices)
|
|
bool flags[NUM_FLAGS];
|
|
};
|
|
|
|
struct TriggerType
|
|
{
|
|
//the same order of trigger types in this enum and in validTriggers array is obligatory!
|
|
enum ETrigType{AE, BA, BF, BG, BR, CM, CO, FU, GE, GM, HE, HL, HM, IP, LE, MF, MG, MM, MR,
|
|
MW, OB, PI, SN, TH, TM} type;
|
|
static ETrigType convertTrigger(const std::string & trig)
|
|
{
|
|
static const std::string validTriggers[] = {"AE", "BA", "BF", "BG", "BR", "CM", "CO", "FU",
|
|
"GE", "GM", "HE", "HL", "HM", "IP", "LE", "MF", "MG", "MM", "MR", "MW", "OB", "PI", "SN",
|
|
"TH", "TM"};
|
|
|
|
for(int i=0; i<ARRAY_COUNT(validTriggers); ++i)
|
|
{
|
|
if(validTriggers[i] == trig)
|
|
return static_cast<ETrigType>(i);
|
|
}
|
|
throw EInvalidTrigger(trig);
|
|
}
|
|
|
|
bool operator<(const TriggerType & t2) const
|
|
{
|
|
return type < t2.type;
|
|
}
|
|
|
|
TriggerType(const std::string & sym)
|
|
{
|
|
type = convertTrigger(sym);
|
|
}
|
|
|
|
};
|
|
|
|
struct FileInfo
|
|
{
|
|
std::string filename;
|
|
int length;
|
|
};
|
|
|
|
struct LinePointer
|
|
{
|
|
const FileInfo * file; //non-owning
|
|
int lineNum;
|
|
|
|
int realLineNum;
|
|
|
|
LinePointer() : file(NULL)
|
|
{}
|
|
|
|
LinePointer(const FileInfo * finfo, int line, int _realLineNum) : file(finfo), lineNum(line),
|
|
realLineNum(_realLineNum)
|
|
{}
|
|
|
|
//lexicographical order
|
|
bool operator<(const LinePointer & rhs) const
|
|
{
|
|
if(file->filename != rhs.file->filename)
|
|
return file->filename < rhs.file->filename;
|
|
|
|
return lineNum < rhs.lineNum;
|
|
}
|
|
|
|
bool operator!=(const LinePointer & rhs) const
|
|
{
|
|
return file->filename != rhs.file->filename || lineNum != rhs.lineNum;
|
|
}
|
|
LinePointer & operator++()
|
|
{
|
|
++lineNum;
|
|
return *this;
|
|
}
|
|
bool isValid() const
|
|
{
|
|
return file && lineNum < file->length;
|
|
}
|
|
};
|
|
|
|
struct LexicalPtr
|
|
{
|
|
LinePointer line; //where to start
|
|
std::vector<int> entryPoints; //defines how to pass to current location
|
|
|
|
bool operator<(const LexicalPtr & sec) const
|
|
{
|
|
if(line != sec.line)
|
|
return line < sec.line;
|
|
|
|
if(entryPoints.size() != sec.entryPoints.size())
|
|
return entryPoints.size() < sec.entryPoints.size();
|
|
|
|
for(int g=0; g<entryPoints.size(); ++g)
|
|
{
|
|
if(entryPoints[g] < sec.entryPoints[g])
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
};
|
|
|
|
//call stack, represents dynamic range
|
|
struct Stack
|
|
{
|
|
std::vector<LexicalPtr> stack;
|
|
};
|
|
|
|
struct Trigger
|
|
{
|
|
LinePointer line;
|
|
TriggerLocalVars ermLocalVars;
|
|
Stack * stack; //where we are stuck at execution
|
|
Trigger() : stack(NULL)
|
|
{}
|
|
};
|
|
|
|
}
|
|
|
|
class ERMInterpreter;
|
|
|
|
struct TriggerIdentifierMatch
|
|
{
|
|
bool allowNoIdetifier;
|
|
std::map< int, std::vector<int> > matchToIt; //match subidentifiers to these numbers
|
|
|
|
static const int MAX_SUBIDENTIFIERS = 16;
|
|
ERMInterpreter * ermEnv;
|
|
bool tryMatch(VERMInterpreter::Trigger * interptrig) const;
|
|
};
|
|
|
|
struct IexpValStr
|
|
{
|
|
private:
|
|
union
|
|
{
|
|
int val;
|
|
int * integervar;
|
|
double * flvar;
|
|
std::string * stringvar;
|
|
} val;
|
|
public:
|
|
std::string name;
|
|
std::string getName() const;
|
|
|
|
enum {WRONGVAL, INT, INTVAR, FLOATVAR, STRINGVAR} type;
|
|
void setTo(const IexpValStr & second);
|
|
void setTo(int val);
|
|
void setTo(float val);
|
|
void setTo(const std::string & val);
|
|
int getInt() const;
|
|
float getFloat() const;
|
|
std::string getString() const;
|
|
|
|
IexpValStr() : type(WRONGVAL)
|
|
{}
|
|
IexpValStr(int _val) : type(INT)
|
|
{
|
|
val.val = _val;
|
|
}
|
|
IexpValStr(int* _val) : type(INTVAR)
|
|
{
|
|
val.integervar = _val;
|
|
}
|
|
IexpValStr(double * _val) : type(FLOATVAR)
|
|
{
|
|
val.flvar = _val;
|
|
}
|
|
IexpValStr(std::string * _val) : type(STRINGVAR)
|
|
{
|
|
val.stringvar = _val;
|
|
}
|
|
|
|
#define OPERATOR_DEFINITION_FULL(OPSIGN) \
|
|
template<typename T> \
|
|
IexpValStr operator OPSIGN(const T & sec) const \
|
|
{ \
|
|
IexpValStr ret = *this; \
|
|
switch (type) \
|
|
{ \
|
|
case INT: \
|
|
case INTVAR: \
|
|
ret.setTo(ret.getInt() OPSIGN sec); \
|
|
break; \
|
|
case FLOATVAR: \
|
|
ret.setTo(ret.getFloat() OPSIGN sec); \
|
|
break; \
|
|
case STRINGVAR: \
|
|
ret.setTo(ret.getString() OPSIGN sec); \
|
|
break; \
|
|
} \
|
|
return ret; \
|
|
} \
|
|
IexpValStr operator OPSIGN(const IexpValStr & sec) const \
|
|
{ \
|
|
IexpValStr ret = *this; \
|
|
switch (type) \
|
|
{ \
|
|
case INT: \
|
|
case INTVAR: \
|
|
ret.setTo(ret.getInt() OPSIGN sec.getInt()); \
|
|
break; \
|
|
case FLOATVAR: \
|
|
ret.setTo(ret.getFloat() OPSIGN sec.getFloat()); \
|
|
break; \
|
|
case STRINGVAR: \
|
|
ret.setTo(ret.getString() OPSIGN sec.getString()); \
|
|
break; \
|
|
} \
|
|
return ret; \
|
|
} \
|
|
template<typename T> \
|
|
IexpValStr & operator OPSIGN ## = (const T & sec) \
|
|
{ \
|
|
*this = *this OPSIGN sec; \
|
|
return *this; \
|
|
}
|
|
|
|
#define OPERATOR_DEFINITION(OPSIGN) \
|
|
template<typename T> \
|
|
IexpValStr operator OPSIGN(const T & sec) const \
|
|
{ \
|
|
IexpValStr ret = *this; \
|
|
switch (type) \
|
|
{ \
|
|
case INT: \
|
|
case INTVAR: \
|
|
ret.setTo(ret.getInt() OPSIGN sec); \
|
|
break; \
|
|
case FLOATVAR: \
|
|
ret.setTo(ret.getFloat() OPSIGN sec); \
|
|
break; \
|
|
} \
|
|
return ret; \
|
|
} \
|
|
IexpValStr operator OPSIGN(const IexpValStr & sec) const \
|
|
{ \
|
|
IexpValStr ret = *this; \
|
|
switch (type) \
|
|
{ \
|
|
case INT: \
|
|
case INTVAR: \
|
|
ret.setTo(ret.getInt() OPSIGN sec.getInt()); \
|
|
break; \
|
|
case FLOATVAR: \
|
|
ret.setTo(ret.getFloat() OPSIGN sec.getFloat()); \
|
|
break; \
|
|
} \
|
|
return ret; \
|
|
} \
|
|
template<typename T> \
|
|
IexpValStr & operator OPSIGN ## = (const T & sec) \
|
|
{ \
|
|
*this = *this OPSIGN sec; \
|
|
return *this; \
|
|
}
|
|
|
|
#define OPERATOR_DEFINITION_INTEGER(OPSIGN) \
|
|
template<typename T> \
|
|
IexpValStr operator OPSIGN(const T & sec) const \
|
|
{ \
|
|
IexpValStr ret = *this; \
|
|
switch (type) \
|
|
{ \
|
|
case INT: \
|
|
case INTVAR: \
|
|
ret.setTo(ret.getInt() OPSIGN sec); \
|
|
break; \
|
|
} \
|
|
return ret; \
|
|
} \
|
|
IexpValStr operator OPSIGN(const IexpValStr & sec) const \
|
|
{ \
|
|
IexpValStr ret = *this; \
|
|
switch (type) \
|
|
{ \
|
|
case INT: \
|
|
case INTVAR: \
|
|
ret.setTo(ret.getInt() OPSIGN sec.getInt()); \
|
|
break; \
|
|
} \
|
|
return ret; \
|
|
} \
|
|
template<typename T> \
|
|
IexpValStr & operator OPSIGN ## = (const T & sec) \
|
|
{ \
|
|
*this = *this OPSIGN sec; \
|
|
return *this; \
|
|
}
|
|
|
|
OPERATOR_DEFINITION_FULL(+)
|
|
OPERATOR_DEFINITION(-)
|
|
OPERATOR_DEFINITION(*)
|
|
OPERATOR_DEFINITION(/)
|
|
OPERATOR_DEFINITION_INTEGER(%)
|
|
};
|
|
|
|
class ERMInterpreter : public CScriptingModule
|
|
{
|
|
/*not so*/ public:
|
|
// friend class ScriptScanner;
|
|
// friend class TriggerIdMatchHelper;
|
|
// friend class TriggerIdentifierMatch;
|
|
// friend class ConditionDisemboweler;
|
|
// friend struct LVL2IexpDisemboweler;
|
|
// friend struct VR_SPerformer;
|
|
// friend struct ERMExpDispatch;
|
|
// friend struct VRPerformer;
|
|
|
|
std::vector<VERMInterpreter::FileInfo*> files;
|
|
std::vector< VERMInterpreter::FileInfo* > fileInfos;
|
|
std::map<VERMInterpreter::LinePointer, ERM::TLine> scripts;
|
|
std::map<VERMInterpreter::LexicalPtr, VERMInterpreter::Environment> lexicalEnvs;
|
|
ERM::TLine &retrieveLine(VERMInterpreter::LinePointer linePtr);
|
|
static ERM::TTriggerBase & retrieveTrigger(ERM::TLine &line);
|
|
|
|
VERMInterpreter::Environment * globalEnv;
|
|
VERMInterpreter::ERMEnvironment * ermGlobalEnv;
|
|
typedef std::map<VERMInterpreter::TriggerType, std::vector<VERMInterpreter::Trigger> > TtriggerListType;
|
|
TtriggerListType triggers, postTriggers;
|
|
VERMInterpreter::Trigger * curTrigger;
|
|
VERMInterpreter::FunctionLocalVars * curFunc;
|
|
static const int TRIG_FUNC_NUM = 30000;
|
|
VERMInterpreter::FunctionLocalVars funcVars[TRIG_FUNC_NUM+1]; //+1 because we use [0] as a global set of y-vars
|
|
VERMInterpreter::FunctionLocalVars * getFuncVars(int funNum); //0 is a global func-like set
|
|
|
|
IexpValStr getIexp(const ERM::TIexp & iexp) const;
|
|
IexpValStr getIexp(const ERM::TMacroUsage & macro) const;
|
|
IexpValStr getIexp(const ERM::TIdentifierInternal & tid) const;
|
|
IexpValStr getIexp(const ERM::TVarpExp & tid) const;
|
|
IexpValStr getIexp(const ERM::TBodyOptionItem & opit) const;
|
|
|
|
static const std::string triggerSymbol, postTriggerSymbol, defunSymbol;
|
|
|
|
void executeLine(const VERMInterpreter::LinePointer & lp);
|
|
void executeTrigger(VERMInterpreter::Trigger & trig, int funNum = -1, std::vector<int> funParams=std::vector<int>());
|
|
static bool isCMDATrigger(const ERM::Tcommand & cmd);
|
|
static bool isATrigger(const ERM::TLine & line);
|
|
static ERM::EVOtions getExpType(const ERM::TVOption & opt);
|
|
IexpValStr getVar(std::string toFollow, boost::optional<int> initVal) const;
|
|
|
|
std::string processERMString(std::string ermstring);
|
|
|
|
public:
|
|
typedef std::map< int, std::vector<int> > TIDPattern;
|
|
void executeInstructions(); //called when starting a new game, before most of the map settings are done
|
|
void executeTriggerType(VERMInterpreter::TriggerType tt, bool pre, const TIDPattern & identifier, const std::vector<int> &funParams=std::vector<int>()); //use this to run triggers
|
|
void executeTriggerType(const char *trigger, int id); //convenience version of above, for pre-trigger when there is only one argument
|
|
void executeTriggerType(const char *trigger); //convenience version of above, for pre-trigger when there are no args
|
|
void setCurrentlyVisitedObj(int3 pos); //sets v998 - v1000 to given value
|
|
void scanForScripts();
|
|
|
|
enum EPrintMode{ALL, ERM_ONLY, VERM_ONLY};
|
|
void printScripts(EPrintMode mode = ALL);
|
|
void scanScripts(); //scans for functions, triggers etc.
|
|
|
|
ERMInterpreter();
|
|
bool checkCondition( ERM::Tcondition cond );
|
|
int getRealLine(int lineNum);
|
|
|
|
//overload CScriptingModule
|
|
virtual void heroVisit(const CGHeroInstance *visitor, const CGObjectInstance *visitedObj, bool start) OVERRIDE;
|
|
virtual void init() OVERRIDE;//sets up environment etc.
|
|
virtual void battleStart(const CCreatureSet *army1, const CCreatureSet *army2, int3 tile, const CGHeroInstance *hero1, const CGHeroInstance *hero2, bool side) OVERRIDE;
|
|
|
|
const CGObjectInstance *getObjFrom(int3 pos);
|
|
template <typename T>
|
|
const T *getObjFromAs(int3 pos)
|
|
{
|
|
const T* obj = dynamic_cast<const T*>(getObjFrom(pos));
|
|
if(obj)
|
|
return obj;
|
|
else
|
|
throw EScriptExecError("Wrong cast attempted, object is not of a desired type!");
|
|
}
|
|
};
|