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Add the beginnings of a scope system

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This commit is contained in:
Jason Turner 2009-06-05 22:39:49 +00:00
parent 2a4b1acfd1
commit 1dbaa4062c
1 changed files with 33 additions and 8 deletions
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41
boxedcpp/boxedcpp.hpp
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@ -9,6 +9,7 @@
#include <stdexcept>
#include <vector>
#include <iostream>
#include <deque>
#include "boxed_value.hpp"
#include "type_info.hpp"
@ -20,6 +21,13 @@ class BoxedCPP_System
public:
typedef std::multimap<std::string, boost::shared_ptr<Proxy_Function> > Function_Map;
typedef std::map<std::string, Type_Info> Type_Name_Map;
typedef std::map<std::string, Boxed_Value> Scope;
BoxedCPP_System()
{
m_scopes.push_back(Scope());
}
void register_function(const boost::shared_ptr<Proxy_Function> &f, const std::string &name)
{
@ -36,19 +44,36 @@ class BoxedCPP_System
template<typename Class>
void add_object(const std::string &name, const Class &obj)
{
//m_objects.insert(std::make_pair(name, Boxed_Value(obj)));
m_objects[name] = Boxed_Value(obj);
m_scopes.back()[name] = Boxed_Value(obj);
}
void new_scope()
{
m_scopes.push_back(Scope());
}
void pop_scope()
{
if (m_scopes.size() == 1)
{
m_scopes.pop_back();
} else {
throw std::range_error("Unable to pop global stack");
}
}
Boxed_Value get_object(const std::string &name) const
{
std::map<std::string, Boxed_Value>::const_iterator itr = m_objects.find(name);
if (itr != m_objects.end())
for (size_t i = m_scopes.size()-1; i >= 0; --i)
{
return itr->second;
} else {
throw std::range_error("Object not known: " + name);
std::map<std::string, Boxed_Value>::const_iterator itr = m_scopes[i].find(name);
if (itr != m_scopes[i].end())
{
return itr->second;
}
}
throw std::range_error("Object not known: " + name);
}
template<typename Type>
@ -76,7 +101,7 @@ class BoxedCPP_System
}
private:
std::map<std::string, Boxed_Value > m_objects;
std::deque<Scope> m_scopes;
Function_Map m_functions;
Type_Name_Map m_types;