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#ifndef COMPILER_CONTROLPARSER_H_INCLUDED
#define COMPILER_CONTROLPARSER_H_INCLUDED
#include <vector>
#include <components/interpreter/types.hpp>
#include "exprparser.hpp"
#include "lineparser.hpp"
#include "parser.hpp"
namespace Compiler
{
class Locals;
class Literals;
// Control structure parser
class ControlParser : public Parser
{
enum State
{
StartState,
IfEndState,
IfBodyState,
IfElseifEndState,
IfElseifBodyState,
IfElseEndState,
IfElseBodyState,
IfEndifState,
WhileEndState,
WhileBodyState,
WhileEndwhileState,
IfElseJunkState
};
typedef std::vector<Interpreter::Type_Code> Codes;
typedef std::vector<std::pair<Codes, Codes>> IfCodes;
Locals& mLocals;
Literals& mLiterals;
Codes mCode;
Codes mCodeBlock;
IfCodes mIfCode; // condition, body
LineParser mLineParser;
ExprParser mExprParser;
State mState;
bool parseIfBody(int keyword, const TokenLoc& loc, Scanner& scanner);
bool parseWhileBody(int keyword, const TokenLoc& loc, Scanner& scanner);
public:
ControlParser(ErrorHandler& errorHandler, const Context& context, Locals& locals, Literals& literals);
void appendCode(std::vector<Interpreter::Type_Code>& code) const;
///< store generated code in \a code.
bool parseName(const std::string& name, const TokenLoc& loc, Scanner& scanner) override;
///< Handle a name token.
/// \return fetch another token?
bool parseKeyword(int keyword, const TokenLoc& loc, Scanner& scanner) override;
///< Handle a keyword token.
/// \return fetch another token?
bool parseSpecial(int code, const TokenLoc& loc, Scanner& scanner) override;
///< Handle a special character token.
/// \return fetch another token?
void reset() override;
///< Reset parser to clean state.
};
}
#endif
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