/* * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands. * See the copyright notice in the ACK home directory, in the file "Copyright". */ /* $Id$ */ /* D E F I N I T I O N S F O R T H E L E X I C A L A N A L Y Z E R */ /* A token from the input stream is represented by an integer, called a "symbol", but it may have other information associated to it. */ #include "nofloat.h" #include "file_info.h" #include "nopp.h" /* the structure of a token: */ struct token { int tok_symb; /* the token itself */ char *tok_file; /* the file it (probably) comes from */ unsigned int tok_line; /* the line it (probably) comes from */ union { struct idf *tok_idf; /* for IDENTIFIER & TYPE_IDENTIFIER */ struct { /* for STRING */ char *tok_bts; /* row of bytes */ int tok_len; /* length of row of bytes */ } tok_string; struct { /* for INTEGER */ int tok_fund; /* INT or LONG */ arith tok_ival; } tok_integer; #ifndef NOFLOAT char *tok_fval; #endif /* NOFLOAT */ } tok_data; }; #define tk_symb tok_symb #define tk_file tok_file #define tk_line tok_line #define tk_idf tok_data.tok_idf #define tk_bts tok_data.tok_string.tok_bts #define tk_len tok_data.tok_string.tok_len #define tk_fund tok_data.tok_integer.tok_fund #define tk_ival tok_data.tok_integer.tok_ival #ifndef NOFLOAT #define tk_fval tok_data.tok_fval #endif /* NOFLOAT */ extern struct token dot, ahead, aside; extern int token_nmb; /* number of the ahead token */ extern int tk_nmb_at_last_syn_err; /* token number at last syntax error */ #ifndef NOPP extern int ReplaceMacros; /* "LLlex.c" */ extern int AccDefined; /* "LLlex.c" */ extern int Unstacked; /* "LLlex.c" */ extern int UnknownIdIsZero; /* "LLlex.c" */ #endif /* NOPP */ extern int EoiForNewline; /* "LLlex.c" */ extern int AccFileSpecifier; /* "LLlex.c" */ extern int SkipEscNewline; /* "LLlex.c" */ extern int File_Inserted; /* "LLlex.c" */ extern int NoUnstack; /* buffer.c */ extern int err_occurred; /* "error.c" */ #define DOT dot.tk_symb #define AHEAD ahead.tk_symb #define ASIDE aside.tk_symb #define EOF (-1)