Michael Fabian 'Xaymar' Dirks
726bd78a59
This should make parsing even easier as the internal commands are tokens instead of text. Additionally it is now possible to properly include comments as they are no longer considered separate parts and instead are a single string lasting until the end of the line.
131 lines
3.0 KiB
C++
131 lines
3.0 KiB
C++
// Code Compiler for BlitzLLVM
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// Copyright(C) 2017 Michael Fabian Dirks
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//
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// This program is free software : you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program.If not, see <https://www.gnu.org/licenses/>.
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#pragma once
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#include <list>
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#include <istream>
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#include <string>
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#include <inttypes.h>
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namespace BlitzLLVM {
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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(std::istream& fs);
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~Lexer();
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std::pair<Token, std::string> GetNextToken();
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private:
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BlitzLLVM::Lexer::Token ConvertTextToToken(Token in, std::string text);
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private:
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std::istream& m_fileStream;
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bool m_isTextMode = false;
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bool m_isNumberMode = false;
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bool m_isStringMode = false;
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bool m_isCommentMode = false;
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bool m_numberModeHasDecimal = false;
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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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} |