--- trunk/src/selection/SelectionEvaluator.cpp	2005/02/01 06:55:00	277
+++ trunk/src/selection/SelectionEvaluator.cpp	2006/05/17 21:51:42	963
@@ -39,8 +39,411 @@
  * such damages.
  */
 
+#include <stack>
 #include "selection/SelectionEvaluator.hpp"
+#include "primitives/Atom.hpp"
+#include "primitives/DirectionalAtom.hpp"
+#include "primitives/RigidBody.hpp"
+#include "primitives/Molecule.hpp"
+
 namespace oopse {
 
 
+  SelectionEvaluator::SelectionEvaluator(SimInfo* si) 
+    : info(si), nameFinder(info), distanceFinder(info), indexFinder(info), isLoaded_(false){
+    
+      nStuntDouble = info->getNGlobalAtoms() + info->getNRigidBodies();
+    }            
+
+  bool SelectionEvaluator::loadScript(const std::string& filename, const std::string& script) {
+    clearDefinitionsAndLoadPredefined();
+    this->filename = filename;
+    this->script = script;
+    if (! compiler.compile(filename, script)) {
+      error = true;
+      errorMessage = compiler.getErrorMessage();
+      std::cerr << "SelectionCompiler Error: " << errorMessage << std::endl;
+      return false;
+    }
+
+    pc = 0;
+    aatoken = compiler.getAatokenCompiled();
+    linenumbers = compiler.getLineNumbers();
+    lineIndices = compiler.getLineIndices();
+
+    std::vector<std::vector<Token> >::const_iterator i;   
+
+    isDynamic_ = false;
+    for (i = aatoken.begin(); i != aatoken.end(); ++i) {
+      if (containDynamicToken(*i)) {
+	isDynamic_ = true;
+	break;
+      }
+    }
+
+    isLoaded_ = true;
+    return true;
+  }
+
+  void SelectionEvaluator::clearState() {
+    error = false;
+    errorMessage = "";
+  }
+
+  bool SelectionEvaluator::loadScriptString(const std::string& script) {
+    clearState();
+    return loadScript("", script);
+  }
+
+  bool SelectionEvaluator::loadScriptFile(const std::string& filename) {
+    clearState();
+    return loadScriptFileInternal(filename);
+  }
+
+  bool SelectionEvaluator::loadScriptFileInternal(const  std::string & filename) {
+    std::ifstream ifs(filename.c_str());
+    if (!ifs.is_open()) {
+      return false;
+    }
+
+    const int bufferSize = 65535;
+    char buffer[bufferSize];
+    std::string script;
+    while(ifs.getline(buffer, bufferSize)) {
+      script += buffer;
+    }
+    return loadScript(filename, script);
+  }
+
+  void SelectionEvaluator::instructionDispatchLoop(OOPSEBitSet& bs){
+    
+    while ( pc < aatoken.size()) {
+      statement = aatoken[pc++];
+      statementLength = statement.size();
+      Token token = statement[0];
+      switch (token.tok) {
+      case Token::define:
+	define();
+	break;
+      case Token::select:
+	select(bs);
+	break;
+      default:
+	unrecognizedCommand(token);
+	return;
+      }
+    }
+
+  }
+
+  OOPSEBitSet SelectionEvaluator::expression(const std::vector<Token>& code, int pcStart) {
+    OOPSEBitSet bs;
+    std::stack<OOPSEBitSet> stack;
+    
+    for (int pc = pcStart; pc < code.size(); ++pc) {
+      Token instruction = code[pc];
+
+      switch (instruction.tok) {
+      case Token::expressionBegin:
+        break;
+      case Token::expressionEnd:
+        break;
+      case Token::all:
+        bs = OOPSEBitSet(nStuntDouble);
+        bs.setAll();
+        stack.push(bs);            
+        break;
+      case Token::none:
+        bs = OOPSEBitSet(nStuntDouble);
+        stack.push(bs);            
+        break;
+      case Token::opOr:
+        bs = stack.top();
+        stack.pop();
+        stack.top() |= bs;
+        break;
+      case Token::opAnd:
+        bs = stack.top();
+        stack.pop();
+        stack.top() &= bs;
+        break;
+      case Token::opNot:
+        stack.top().flip();
+        break;
+      case Token::within:
+
+        withinInstruction(instruction, stack.top());
+        break;
+	//case Token::selected:
+	//  stack.push(getSelectionSet());
+	//  break;
+      case Token::name:
+        stack.push(nameInstruction(boost::any_cast<std::string>(instruction.value)));
+        break;
+      case Token::index:
+        stack.push(indexInstruction(instruction.value));
+        break;
+      case Token::identifier:
+        stack.push(lookupValue(boost::any_cast<std::string>(instruction.value)));
+        break;
+      case Token::opLT:
+      case Token::opLE:
+      case Token::opGE:
+      case Token::opGT:
+      case Token::opEQ:
+      case Token::opNE:
+        stack.push(comparatorInstruction(instruction));
+        break;
+      default:
+        unrecognizedExpression();
+      }
+    }
+    if (stack.size() != 1)
+      evalError("atom expression compiler error - stack over/underflow");
+          
+    return stack.top();
+  }
+
+
+
+  OOPSEBitSet SelectionEvaluator::comparatorInstruction(const Token& instruction) {
+    int comparator = instruction.tok;
+    int property = instruction.intValue;
+    float comparisonValue = boost::any_cast<float>(instruction.value);
+    float propertyValue;
+    OOPSEBitSet bs(nStuntDouble);
+    bs.clearAll();
+    
+    SimInfo::MoleculeIterator mi;
+    Molecule* mol;
+    Molecule::AtomIterator ai;
+    Atom* atom;
+    Molecule::RigidBodyIterator rbIter;
+    RigidBody* rb;
+    
+    for (mol = info->beginMolecule(mi); mol != NULL; mol = info->nextMolecule(mi)) {
+
+      for(atom = mol->beginAtom(ai); atom != NULL; atom = mol->nextAtom(ai)) {
+	compareProperty(atom, bs, property, comparator, comparisonValue);
+      }
+        
+      for (rb = mol->beginRigidBody(rbIter); rb != NULL; rb = mol->nextRigidBody(rbIter)) {
+	compareProperty(rb, bs, property, comparator, comparisonValue);
+      }        
+    }
+
+    return bs;
+  }
+
+  void SelectionEvaluator::compareProperty(StuntDouble* sd, OOPSEBitSet& bs, int property, int comparator, float comparisonValue) {
+    RealType propertyValue = 0.0;
+    switch (property) {
+    case Token::mass:
+      propertyValue = sd->getMass();
+      break;
+    case Token::charge:
+      if (sd->isAtom()){
+	Atom* atom = static_cast<Atom*>(sd);
+	propertyValue = getCharge(atom);
+      } else if (sd->isRigidBody()) {
+	RigidBody* rb = static_cast<RigidBody*>(sd);
+	RigidBody::AtomIterator ai;
+	Atom* atom;
+	for (atom = rb->beginAtom(ai); atom != NULL; atom = rb->nextAtom(ai)) {
+	  propertyValue+=  getCharge(atom);
+	}
+      }
+      break;
+    default:
+      unrecognizedAtomProperty(property);
+    }
+        
+    bool match = false;
+    switch (comparator) {
+    case Token::opLT:
+      match = propertyValue < comparisonValue;
+      break;
+    case Token::opLE:
+      match = propertyValue <= comparisonValue;
+      break;
+    case Token::opGE:
+      match = propertyValue >= comparisonValue;
+      break;
+    case Token::opGT:
+      match = propertyValue > comparisonValue;
+      break;
+    case Token::opEQ:
+      match = propertyValue == comparisonValue;
+      break;
+    case Token::opNE:
+      match = propertyValue != comparisonValue;
+      break;
+    }
+    if (match)
+      bs.setBitOn(sd->getGlobalIndex());
+
+  }
+
+  void SelectionEvaluator::withinInstruction(const Token& instruction, OOPSEBitSet& bs){
+    
+    boost::any withinSpec = instruction.value;
+    float distance;
+    if (withinSpec.type() == typeid(float)){
+      distance = boost::any_cast<float>(withinSpec);
+    } else if (withinSpec.type() == typeid(int)) {
+      distance = boost::any_cast<int>(withinSpec);    
+    } else {
+      evalError("casting error in withinInstruction");
+      bs.clearAll();
+    }
+    
+    bs = distanceFinder.find(bs, distance);            
+  }
+
+  void SelectionEvaluator::define() {
+    assert(statement.size() >= 3);
+
+    std::string variable = boost::any_cast<std::string>(statement[1].value);
+
+    variables.insert(VariablesType::value_type(variable, expression(statement, 2)));
+  }
+
+
+  /** @todo */
+  void SelectionEvaluator::predefine(const std::string& script) {
+
+    if (compiler.compile("#predefine", script)) {
+      std::vector<std::vector<Token> > aatoken = compiler.getAatokenCompiled();
+      if (aatoken.size() != 1) {
+	evalError("predefinition does not have exactly 1 command:"
+		  + script);
+	return;
+      }
+      std::vector<Token> statement = aatoken[0];
+      if (statement.size() > 2) {
+	int tok = statement[1].tok;
+	if (tok == Token::identifier || (tok & Token::predefinedset) == Token::predefinedset) {
+	  std::string variable = boost::any_cast<std::string>(statement[1].value);
+	  variables.insert(VariablesType::value_type(variable, statement));
+
+	} else {
+	  evalError("invalid variable name:" + script);
+	}
+      }else {
+	evalError("bad predefinition length:" + script);
+      }
+
+        
+    } else {
+      evalError("predefined set compile error:" + script +
+		"\ncompile error:" + compiler.getErrorMessage());
+    }
+
+  }
+
+  void SelectionEvaluator::select(OOPSEBitSet& bs){
+    bs = expression(statement, 1);
+  }
+
+  OOPSEBitSet SelectionEvaluator::lookupValue(const std::string& variable){
+
+    OOPSEBitSet bs(nStuntDouble);
+    std::map<std::string, boost::any>::iterator i = variables.find(variable);
+    
+    if (i != variables.end()) {
+      if (i->second.type() == typeid(OOPSEBitSet)) {
+	return boost::any_cast<OOPSEBitSet>(i->second);
+      } else if (i->second.type() ==  typeid(std::vector<Token>)){
+	bs = expression(boost::any_cast<std::vector<Token> >(i->second), 2);
+	i->second =  bs; /**@todo fixme */
+	return bs;
+      }
+    } else {
+      unrecognizedIdentifier(variable);
+    }
+
+    return bs;
+  }
+
+  OOPSEBitSet SelectionEvaluator::nameInstruction(const std::string& name){
+    
+    return nameFinder.match(name);
+
+  }    
+
+  bool SelectionEvaluator::containDynamicToken(const std::vector<Token>& tokens){
+    std::vector<Token>::const_iterator i;
+    for (i = tokens.begin(); i != tokens.end(); ++i) {
+      if (i->tok & Token::dynamic) {
+	return true;
+      }
+    }
+
+    return false;
+  }    
+
+  void SelectionEvaluator::clearDefinitionsAndLoadPredefined() {
+    variables.clear();
+    //load predefine
+    //predefine();
+  }
+
+  OOPSEBitSet SelectionEvaluator::evaluate() {
+    OOPSEBitSet bs(nStuntDouble);
+    if (isLoaded_) {
+      pc = 0;
+      instructionDispatchLoop(bs);
+    }
+
+    return bs;
+  }
+
+  OOPSEBitSet SelectionEvaluator::indexInstruction(const boost::any& value) {
+    OOPSEBitSet bs(nStuntDouble);
+
+    if (value.type() == typeid(int)) {
+      int index = boost::any_cast<int>(value);
+      if (index < 0 || index >= bs.size()) {
+	invalidIndex(index);
+      } else {
+	bs = indexFinder.find(index);
+      }
+    } else if (value.type() == typeid(std::pair<int, int>)) {
+      std::pair<int, int> indexRange= boost::any_cast<std::pair<int, int> >(value);
+      assert(indexRange.first <= indexRange.second);
+      if (indexRange.first < 0 || indexRange.second >= bs.size()) {
+	invalidIndexRange(indexRange);
+      }else {
+	bs = indexFinder.find(indexRange.first, indexRange.second);
+      }
+    }
+
+    return bs;
+  }
+
+
+  RealType SelectionEvaluator::getCharge(Atom* atom) {
+    RealType charge =0.0;
+    AtomType* atomType = atom->getAtomType();
+    if (atomType->isCharge()) {
+      GenericData* data = atomType->getPropertyByName("Charge");
+      if (data != NULL) {
+	DoubleGenericData* doubleData= dynamic_cast<DoubleGenericData*>(data);
+
+	if (doubleData != NULL) {
+	  charge = doubleData->getData();
+
+	} else {
+	  sprintf( painCave.errMsg,
+		   "Can not cast GenericData to DoubleGenericData\n");
+	  painCave.severity = OOPSE_ERROR;
+	  painCave.isFatal = 1;
+	  simError();          
+	}
+      } 
+    }
+
+    return charge;
+  }
+
 }