lexer.h

//Keywords
#define T_FUNCTION      1
#define T_SUBROUTINE    2
#define T_END           3
#define T_INTEGER       4
#define T_REAL          5 
#define T_LOGICAL       6
#define T_CHARACTER     7
#define T_RECORD        8
#define T_ENDREC        9
#define T_DATA          10
#define T_CONTINUE      11
#define T_GOTO          12
#define T_CALL          13
#define T_READ          14
#define T_WRITE         15
#define T_IF            16
#define T_THEN          17
#define T_ELSE          18
#define T_ENDIF         19
#define T_DO            20
#define T_ENDDO         21
#define T_STOP          22
#define T_RETURN        23

//Identifier
#define T_ID            24

//Constants
#define T_ICONST        25
#define T_RCONST        26
#define T_LCONST        27
#define T_CCONST        28

//Operators
#define T_OROP          29
#define T_ANDOP         30
#define T_NOTOP         31
#define T_RELOP         32
#define T_ADDOP         33
#define T_MULOP         34
#define T_DIVOP         35
#define T_POWEROP       36

//Strings
#define T_STRING        37

//Other
#define T_LPAREN        38
#define T_RPAREN        39
#define T_COMMA         40
#define T_ASSIGN        41
#define T_COLON         42

//EOF
#define T_EOF           0