Interpreter.hpp

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#pragma once
 
#include "AstGlobal.h"
#include "SymbolTable.hpp"
#include "SymbolScope.hpp"
#include "CallStack.hpp"
#include "ScriptContext.hpp"
#include <memory>
#include <string>
 
AST_NAMESPACE_BEGIN
 
class ISymbolScope;
 
class AST_SCRIPT_API Interpreter
{
public:
    Interpreter();
 
    explicit Interpreter(ISymbolScope* symbolScope);
    ~Interpreter();
 
    ISymbolScope* currentScope() { return symbolScope_.get(); }
    
    void interpret(StringView code);
 
 
    const std::string& errString() const { return errString_; }
 
 
    void setErrString(StringView err) { errString_ = std::string(err); }
 
 
    void clearErrString() { errString_.clear(); }
 
protected:
    std::unique_ptr<ISymbolScope> symbolScope_;       
    std::string errString_{};                          
};
 
 
AST_SCRIPT_API Interpreter* aNewInterpreter();
 
AST_SCRIPT_API Interpreter* aNewInterpreter(ISymbolScope* symbolScope);
 
 
AST_SCRIPT_API void aDelInterpreter(Interpreter* interpreter);
 
 
class InterpreterContext {
public:
    explicit InterpreterContext(Interpreter& interpreter)
        : InterpreterContext(&interpreter)
    {
    }
    explicit InterpreterContext(Interpreter* interpreter)
    {
        oldInterpreter_ = aScript_SwapInterpreter(interpreter);
    }
    ~InterpreterContext()
    {
        aScript_SetInterpreter(oldInterpreter_);
    }
private:
    Interpreter* oldInterpreter_ = nullptr;
 
    A_DISABLE_COPY(InterpreterContext);
};
 
 
 
AST_NAMESPACE_END