C++程序  |  243行  |  4.1 KB

/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
/*****************************************************************************************
 ******************** This file was generated by sksllex. Do not edit. *******************
 *****************************************************************************************/
#ifndef SKSL_Lexer
#define SKSL_Lexer
#include <cstddef>
#include <cstdint>
namespace SkSL {

struct Token {
    enum Kind {
#undef END_OF_FILE
        END_OF_FILE,
#undef FLOAT_LITERAL
        FLOAT_LITERAL,
#undef INT_LITERAL
        INT_LITERAL,
#undef TRUE_LITERAL
        TRUE_LITERAL,
#undef FALSE_LITERAL
        FALSE_LITERAL,
#undef IF
        IF,
#undef STATIC_IF
        STATIC_IF,
#undef ELSE
        ELSE,
#undef FOR
        FOR,
#undef WHILE
        WHILE,
#undef DO
        DO,
#undef SWITCH
        SWITCH,
#undef STATIC_SWITCH
        STATIC_SWITCH,
#undef CASE
        CASE,
#undef DEFAULT
        DEFAULT,
#undef BREAK
        BREAK,
#undef CONTINUE
        CONTINUE,
#undef DISCARD
        DISCARD,
#undef RETURN
        RETURN,
#undef IN
        IN,
#undef OUT
        OUT,
#undef INOUT
        INOUT,
#undef UNIFORM
        UNIFORM,
#undef CONST
        CONST,
#undef LOWP
        LOWP,
#undef MEDIUMP
        MEDIUMP,
#undef HIGHP
        HIGHP,
#undef FLAT
        FLAT,
#undef NOPERSPECTIVE
        NOPERSPECTIVE,
#undef READONLY
        READONLY,
#undef WRITEONLY
        WRITEONLY,
#undef COHERENT
        COHERENT,
#undef VOLATILE
        VOLATILE,
#undef RESTRICT
        RESTRICT,
#undef BUFFER
        BUFFER,
#undef HASSIDEEFFECTS
        HASSIDEEFFECTS,
#undef STRUCT
        STRUCT,
#undef LAYOUT
        LAYOUT,
#undef PRECISION
        PRECISION,
#undef ENUM
        ENUM,
#undef CLASS
        CLASS,
#undef IDENTIFIER
        IDENTIFIER,
#undef DIRECTIVE
        DIRECTIVE,
#undef SECTION
        SECTION,
#undef LPAREN
        LPAREN,
#undef RPAREN
        RPAREN,
#undef LBRACE
        LBRACE,
#undef RBRACE
        RBRACE,
#undef LBRACKET
        LBRACKET,
#undef RBRACKET
        RBRACKET,
#undef DOT
        DOT,
#undef COMMA
        COMMA,
#undef PLUSPLUS
        PLUSPLUS,
#undef MINUSMINUS
        MINUSMINUS,
#undef PLUS
        PLUS,
#undef MINUS
        MINUS,
#undef STAR
        STAR,
#undef SLASH
        SLASH,
#undef PERCENT
        PERCENT,
#undef SHL
        SHL,
#undef SHR
        SHR,
#undef BITWISEOR
        BITWISEOR,
#undef BITWISEXOR
        BITWISEXOR,
#undef BITWISEAND
        BITWISEAND,
#undef BITWISENOT
        BITWISENOT,
#undef LOGICALOR
        LOGICALOR,
#undef LOGICALXOR
        LOGICALXOR,
#undef LOGICALAND
        LOGICALAND,
#undef LOGICALNOT
        LOGICALNOT,
#undef QUESTION
        QUESTION,
#undef COLONCOLON
        COLONCOLON,
#undef COLON
        COLON,
#undef EQ
        EQ,
#undef EQEQ
        EQEQ,
#undef NEQ
        NEQ,
#undef GT
        GT,
#undef LT
        LT,
#undef GTEQ
        GTEQ,
#undef LTEQ
        LTEQ,
#undef PLUSEQ
        PLUSEQ,
#undef MINUSEQ
        MINUSEQ,
#undef STAREQ
        STAREQ,
#undef SLASHEQ
        SLASHEQ,
#undef PERCENTEQ
        PERCENTEQ,
#undef SHLEQ
        SHLEQ,
#undef SHREQ
        SHREQ,
#undef BITWISEOREQ
        BITWISEOREQ,
#undef BITWISEXOREQ
        BITWISEXOREQ,
#undef BITWISEANDEQ
        BITWISEANDEQ,
#undef LOGICALOREQ
        LOGICALOREQ,
#undef LOGICALXOREQ
        LOGICALXOREQ,
#undef LOGICALANDEQ
        LOGICALANDEQ,
#undef SEMICOLON
        SEMICOLON,
#undef ARROW
        ARROW,
#undef WHITESPACE
        WHITESPACE,
#undef LINE_COMMENT
        LINE_COMMENT,
#undef BLOCK_COMMENT
        BLOCK_COMMENT,
#undef INVALID
        INVALID,
    };

    Token() : fKind(Kind::INVALID), fOffset(-1), fLength(-1) {}

    Token(Kind kind, int offset, int length) : fKind(kind), fOffset(offset), fLength(length) {}

    Kind fKind;
    int fOffset;
    int fLength;
};

class Lexer {
public:
    void start(const char* text, size_t length) {
        fText = text;
        fLength = length;
        fOffset = 0;
    }

    Token next();

private:
    const char* fText;
    int fLength;
    int fOffset;
};

}  // namespace
#endif