1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/compiler/preprocessor/Token.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,106 @@
1.4 +//
1.5 +// Copyright (c) 2011 The ANGLE Project Authors. All rights reserved.
1.6 +// Use of this source code is governed by a BSD-style license that can be
1.7 +// found in the LICENSE file.
1.8 +//
1.9 +
1.10 +#ifndef COMPILER_PREPROCESSOR_TOKEN_H_
1.11 +#define COMPILER_PREPROCESSOR_TOKEN_H_
1.12 +
1.13 +#include <ostream>
1.14 +#include <string>
1.15 +
1.16 +#include "SourceLocation.h"
1.17 +
1.18 +namespace pp
1.19 +{
1.20 +
1.21 +struct Token
1.22 +{
1.23 + enum Type
1.24 + {
1.25 + LAST = 0, // EOF.
1.26 +
1.27 + IDENTIFIER = 258,
1.28 +
1.29 + CONST_INT,
1.30 + CONST_FLOAT,
1.31 +
1.32 + OP_INC,
1.33 + OP_DEC,
1.34 + OP_LEFT,
1.35 + OP_RIGHT,
1.36 + OP_LE,
1.37 + OP_GE,
1.38 + OP_EQ,
1.39 + OP_NE,
1.40 + OP_AND,
1.41 + OP_XOR,
1.42 + OP_OR,
1.43 + OP_ADD_ASSIGN,
1.44 + OP_SUB_ASSIGN,
1.45 + OP_MUL_ASSIGN,
1.46 + OP_DIV_ASSIGN,
1.47 + OP_MOD_ASSIGN,
1.48 + OP_LEFT_ASSIGN,
1.49 + OP_RIGHT_ASSIGN,
1.50 + OP_AND_ASSIGN,
1.51 + OP_XOR_ASSIGN,
1.52 + OP_OR_ASSIGN,
1.53 +
1.54 + // Preprocessing token types.
1.55 + // These types are used by the preprocessor internally.
1.56 + // Preprocessor clients must not depend or check for them.
1.57 + PP_HASH,
1.58 + PP_NUMBER,
1.59 + PP_OTHER
1.60 + };
1.61 + enum Flags
1.62 + {
1.63 + AT_START_OF_LINE = 1 << 0,
1.64 + HAS_LEADING_SPACE = 1 << 1,
1.65 + EXPANSION_DISABLED = 1 << 2
1.66 + };
1.67 +
1.68 + Token() : type(0), flags(0) { }
1.69 +
1.70 + void reset();
1.71 + bool equals(const Token& other) const;
1.72 +
1.73 + // Returns true if this is the first token on line.
1.74 + // It disregards any leading whitespace.
1.75 + bool atStartOfLine() const { return (flags & AT_START_OF_LINE) != 0; }
1.76 + void setAtStartOfLine(bool start);
1.77 +
1.78 + bool hasLeadingSpace() const { return (flags & HAS_LEADING_SPACE) != 0; }
1.79 + void setHasLeadingSpace(bool space);
1.80 +
1.81 + bool expansionDisabled() const { return (flags & EXPANSION_DISABLED) != 0; }
1.82 + void setExpansionDisabled(bool disable);
1.83 +
1.84 + // Converts text into numeric value for CONST_INT and CONST_FLOAT token.
1.85 + // Returns false if the parsed value cannot fit into an int or float.
1.86 + bool iValue(int* value) const;
1.87 + bool uValue(unsigned int* value) const;
1.88 + bool fValue(float* value) const;
1.89 +
1.90 + int type;
1.91 + unsigned int flags;
1.92 + SourceLocation location;
1.93 + std::string text;
1.94 +};
1.95 +
1.96 +inline bool operator==(const Token& lhs, const Token& rhs)
1.97 +{
1.98 + return lhs.equals(rhs);
1.99 +}
1.100 +
1.101 +inline bool operator!=(const Token& lhs, const Token& rhs)
1.102 +{
1.103 + return !lhs.equals(rhs);
1.104 +}
1.105 +
1.106 +extern std::ostream& operator<<(std::ostream& out, const Token& token);
1.107 +
1.108 +} // namepsace pp
1.109 +#endif // COMPILER_PREPROCESSOR_TOKEN_H_
