102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
/*
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* Context.h
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*
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* Created on: Dec 30, 2012
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* Author: att
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*/
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#ifndef CONTEXT_H_
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#define CONTEXT_H_
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#include <map>
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#include <string>
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#include "Utils/to_string.h"
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#include "Elements/SenchaObject.h"
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#include "Elements/SenchaFunction.h"
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#include "AST/ASTExpression.h"
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/**
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* Context is object used to store variables for some execution context.
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* It's most useful in function calls. Every function has to have its own execution contexts,
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* for its variables. Arguments are passed to functions by predefining them in new Context, assigned to
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* function.
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*/
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class Context {
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public:
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/**
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* Context has unique name, which is passed to it in constructor.
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*/
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Context(std::string name);
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std::string name;
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/**
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* Typedef to make further declarations easier to read.
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*/
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typedef SenchaObject (*PointerToNativeFunction)(std::vector<ASTExpression *>);
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/**
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* Function have to be declared, which means here, registered before usage.
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* You can register them with register_function functions.
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*/
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void register_function(std::string name, PointerToNativeFunction f);
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void register_function(std::string name, SenchaFunction * f);
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/**
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* Map with function written in C++ stored like {"my_function" : &my_function}
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*/
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std::map<std::string, PointerToNativeFunction> registered_functions;
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/**
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* Map with function written in Sencha stored like {"my_function" : &my_function}
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*/
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std::map<std::string, SenchaFunction *> registered_sfunctions;
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/**
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* contains_function("x") returns true if x can be found in registered native (c++) or sencha functions.
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*/
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bool contains_function(std::string name);
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/**
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* contains_function("x") returns true if x can be found in registered sencha functions.
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*/
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bool contains_sfunction(std::string name);
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/**
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* contains_function("x") returns true if x can be found in registered native (c++).
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*/
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bool contains_nfunction(std::string name);
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/**
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* Executes function written in c++
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*/
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SenchaObject execute_native_function(std::string name, std::vector<ASTExpression *> arguments);
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/**
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* get_updated_string(name) return string of given name with all updates done on its elements such as name[9] = "a";
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*/
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SenchaObject get_updated_string(std::string name);
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/**
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* debug() provides very useful info about context. What variables are stored, what are their values.
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*/
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std::string debug() ;
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/**
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* add(name, value) adds value called name to object store.
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*/
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void add(std::string name, SenchaObject object);
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/**
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* get(name) returns value from object store. If there isn't such a value. It returns SenchaObject();
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*/
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SenchaObject get(std::string name);
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virtual ~Context();
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private:
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unsigned int index;
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std::map<std::string, SenchaObject> object_store;
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};
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#endif /* CONTEXT_H_ */
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