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Token.java
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2005-10-19
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148 lines
// -------------------------- Token ----------------------------
//
// This class encapsulates definitions related to tokens.
// This class is never instantiated.
//
// Harry Porter -- 01/15/03
//
class Token {
//
// Constructor -- This makes creating instances impossible.
//
private Token () { }
//
// Token kinds
//
// This list must match the "stringOf" array.
//
final static int
AND = 0,
ARRAY = 1,
BEGIN = 2,
BY = 3,
DIV = 4,
DO = 5,
ELSE = 6,
ELSEIF = 7,
END = 8,
EXIT = 9,
FOR = 10,
IF = 11,
IS = 12,
LOOP = 13,
MOD = 14,
NOT = 15,
OF = 16,
OR = 17,
PROCEDURE = 18,
PROGRAM = 19,
READ = 20,
RECORD = 21,
RETURN = 22,
THEN = 23,
TO = 24,
TYPE = 25,
VAR = 26,
WHILE = 27,
WRITE = 28,
ID = 29,
INTEGER = 30,
REAL = 31,
STRING = 32,
PLUS = 33, // +
MINUS = 34, // -
STAR = 35, // *
SLASH = 36, // /
LESS = 37, // <
GREATER = 38, // >
EQUAL = 39, // =
COLON = 40, // :
SEMI = 41, // ;
COMMA = 42, // ,
PERIOD = 43, // .
LPAREN = 44, // (
RPAREN = 45, // )
LBRACK = 46, // [
RBRACK = 47, // ]
LBRACE = 48, // {
RBRACE = 49, // }
ASSIGN = 50, // :=
LEQ = 51, // <=
GEQ = 52, // >=
NEQ = 53, // <>
EOF = 54;
//
// Printable representations of token kinds. This list must match the
// token kind codes, above.
//
final static String [] stringOf = {
"AND",
"ARRAY",
"BEGIN",
"BY",
"DIV",
"DO",
"ELSE",
"ELSEIF",
"END",
"EXIT",
"FOR",
"IF",
"IS",
"LOOP",
"MOD",
"NOT",
"OF",
"OR",
"PROCEDURE",
"PROGRAM",
"READ",
"RECORD",
"RETURN",
"THEN",
"TO",
"TYPE",
"VAR",
"WHILE",
"WRITE",
"ID",
"INTEGER",
"REAL",
"STRING",
"+",
"-",
"*",
"/",
"<",
">",
"=",
":",
";",
",",
".",
"(",
")",
"[",
"]",
"{",
"}",
":=",
"<=",
">=",
"<>",
"END-OF-FILE"
};
}