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#include "Variable.h"
#include "TokenStream.h"
#include <iostream>
VariablePtr constructString(const std::string& Val, bool c)
{
return new Variable(String,Val,c);
}
VariablePtr constructList(bool c)
{
return new Variable(List, "", c);
}
VariablePtr constructVoid(bool IsConst)
{
return new Variable(Void,"",IsConst);
}
VariablePtr constructBool(bool Value, bool IsConst)
{
return new Variable(BoolType, Value?"t":"", IsConst);
}
Variable::Variable(VarType T, const std::string& aValue, bool aConst)
: Type(T), Value(aValue), IsConst(aConst)
{
}
void Variable::remove(const std::string& Key)
{
std::string::size_type idx = Key.find(".");
if (idx == std::string::npos)
{
for (unsigned int i=0; i<Vars.size(); ++i)
if (Vars[i].first == Key)
{
Vars.erase(Vars.begin() + i);
return;
}
}
else
{
std::string Part(Key.substr(0,idx));
for (unsigned int i=0; i<Vars.size(); ++i)
if (Vars[i].first == Part)
{
Vars[i].second->remove(Key.substr(idx+1,Key.length()));
if (Vars[i].second->size() == 0)
Vars.erase(Vars.begin() + i);
return;
}
}
}
VarType Variable::type() const
{
return Type;
}
std::string Variable::value() const
{
return Value;
}
unsigned int Variable::size() const
{
return Vars.size();
}
const VariablePtr& Variable::get(unsigned int idx) const
{
return Vars[idx].second;
}
VariablePtr& Variable::get(unsigned int idx)
{
return Vars[idx].second;
}
const std::string Variable::name(unsigned int idx) const
{
return Vars[idx].first;
}
VariablePtr convertTo(VarType T, VariablePtr Src)
{
if (Src->type() == T) return Src->deepCopy();
switch (T)
{
case BoolType:
if (Src->type() == String)
return constructBool(Src->value().length() != 0,false);
break;
}
return constructVoid(false);
}
VariablePtr Variable::deepCopy() const
{
VariablePtr Copy(new Variable(Type,Value,IsConst));
for (unsigned int i=0; i<Vars.size(); ++i)
Copy->insert(Vars[i].first,Vars[i].second->deepCopy());
return Copy;
}
void Variable::set(const std::string& Name, const VariablePtr& other)
{
for (unsigned int i=0; i<Vars.size(); ++i)
if (Vars[i].first == Name)
{
Vars[i].second = other->deepCopy();
return;
}
Vars.push_back(std::make_pair(Name,other->deepCopy()));
}
void Variable::insert(const std::string& Name, const VariablePtr &other)
{
if (Name == "")
Type = List;
Vars.push_back(std::make_pair(Name,other->deepCopy()));
}
VariablePtr Variable::find(const std::string& aName)
{
for (unsigned int i=0; i<Vars.size(); ++i)
if (Vars[i].first == aName)
return Vars[i].second;
return VariablePtr();
}
const VariablePtr Variable::find(const std::string& aName) const
{
for (unsigned int i=0; i<Vars.size(); ++i)
if (Vars[i].first == aName)
return Vars[i].second;
return VariablePtr();
}
VariablePtr Variable::findOrCreate(const std::string& aName)
{
VariablePtr R = find(aName);
if (!R.isNull()) return R;
Vars.push_back(std::make_pair(aName,constructVoid(false)));
return Vars[Vars.size()-1].second;
}
void print(const std::string& In, const VariablePtr& V)
{
switch (V->type())
{
case String:
std::cout << "String = " << V->value() << std::endl;
break;
case Void:
std::cout << "Void" << std::endl;
break;
case List:
std::cout << "List" << std::endl;
break;
case BoolType:
std::cout << "Bool = ";
if (isBoolTrue(V))
std::cout << "{true}" << std::endl;
else
std::cout << "{false}" << std::endl;
break;
default:
std::cout << "unkown" << std::endl;
}
std::string In2(In+" ");
for (unsigned int i=0; i<V->size(); ++i)
{
std::cout << In << V->name(i) << " : ";
print(In2,V->get(i));
}
}
bool isBoolTrue(VariablePtr T)
{
return T->value().length() > 0;
}
std::string stringValue(const VariablePtr& T)
{
if (T->type() == String)
return T->value();
return "";
}
VariablePtr parseFrom(TokenStream& s)
{
if (s.literal("false"))
return constructBool(false,false);
else if (s.literal("true"))
return constructBool(true,false);
std::string V = s.cString();
if (V.length())
return constructString(V.substr(1,V.length()-1),false);
return constructVoid(false);
}
const VariablePtr childOrVoid(const VariablePtr& Parent, const std::string& Name)
{
std::string Key(Name);
std::string Rest;
std::string::size_type idx = Name.find(".");
if (idx != std::string::npos)
{
Key = Name.substr(0,idx);
Rest = Name.substr(idx+1,Name.length());
}
for (unsigned int i=0; i<Parent->size(); ++i)
if (Parent->name(i) == Key)
{
if (Rest.length() == 0)
return Parent->get(i);
else
return childOrVoid(Parent->get(i),Rest);
}
return constructVoid(true);
}
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