Michael Fabian 'Xaymar' Dirks
112 lines
2.2 KiB
C++
112 lines
2.2 KiB
C++
#pragma once
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#include <inttypes.h>
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#include <istream>
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#include <memory>
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#include <string>
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#include <utility>
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namespace blitz {
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class Lexer {
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public:
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enum class Token : uint64_t {
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TokenUnknown,
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TokenEOF,
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TokenNewLine,
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// Symbols
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TokenPlus,
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TokenMinus,
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TokenSlashForward,
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TokenSlashBackward,
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TokenMultiply,
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TokenEqual,
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TokenOctothorp,
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TokenPercent,
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TokenDollar,
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TokenRoundBracketOpen,
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TokenRoundBracketClose,
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TokenSquareBracketOpen,
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TokenSquareBracketClose,
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TokenAngleBracketOpen,
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TokenAngleBracketClose,
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TokenDot,
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TokenColon,
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TokenComma,
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TokenSemicolon,
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TokenCaret,
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TokenBitNot /*~*/,
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// String Delimiter
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TokenDoubleQuote,
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// Types
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TokenText,
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TokenNumber,
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TokenDecimal,
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TokenQuotedText, // Text encapsulated by TokenDoubleQuote
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TokenComment,
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// Binary
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TokenNot,
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TokenAnd, TokenOr, TokenXor,
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TokenShl, TokenShr,
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TokenSal, TokenSar,
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TokenFalse, TokenTrue,
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// Conversion
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TokenFloat,
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TokenString, TokenHex,
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TokenInt,
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// Control
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TokenIf, TokenThen, TokenElseIf, TokenElse, TokenEndIf,
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TokenSelect, TokenCase, TokenDefault, // End Select = TokenEnd, TokenSelect.
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TokenGoto, TokenGosub,
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TokenReturn,
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TokenFunction, // End Function = TokenEnd, TokenFunction.
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TokenEnd,
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TokenStop /* DEBUGGER! Ignore in Release mode. */,
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// Loop
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TokenFor, TokenTo, TokenNext,
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TokenWhile, TokenWend,
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TokenRepeat, TokenUntil, TokenForever,
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TokenExit,
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// Math
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TokenAbs, TokenSign /*Sgn*/,
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TokenCos, TokenSin, TokenTan,
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TokenACos, TokenASin, TokenATan, TokenATan2,
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TokenLog, TokenLog10,
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TokenCeil, TokenFloor,
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TokenMod,
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TokenPi,
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TokenExp, TokenSqr,
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// Variables
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TokenConst,
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TokenGlobal,
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TokenLocal,
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// Including files.
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TokenInclude,
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};
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public:
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Lexer();
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~Lexer();
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std::pair<Token, std::string> GetCurrentToken();
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std::pair<Token, std::string> GetNextToken(std::shared_ptr<std::istream> fs);
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private:
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blitz::Lexer::Token ConvertTextToToken(Token in, std::string text);
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private:
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Token m_currentToken = Token::TokenUnknown;
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std::string m_currentText = "";
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Token m_overrideToken = Token::TokenUnknown;
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std::string m_overrideText = "";
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};
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}
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