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54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
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/*
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* Bob Denny 28-Aug-82 Remove reference to FILE *lexin to
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* eliminate dependency on standard I/O library. Only
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* lexgetc() used it, and it's there now.
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* Add EOF definition for standalone uses.
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* Corrected comment for llnxtmax.
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*
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* Scott Guthery 20-Nov-83 Adapt for IBM PC & DeSmet C. Removed
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* equivalence of yylval and lexval since
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* a multi-typed parser wants yylval to be
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* typed to be the union of the types (YYSTYPE).
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*/
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/*
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* lex library header file -- accessed through
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* #include <lex.h>
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*/
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#include <stdio.h>
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/*
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* Description of scanning tables. The entries at the front of
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* the struct must remain in place for the assembler routines to find.
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*/
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struct lextab {
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int llendst; /* Last state number */
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char *lldefault; /* Default state table */
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char *llnext; /* Next state table */
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char *llcheck; /* Check table */
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int *llbase; /* Base table */
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int llnxtmax; /* Last in next table */
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int (*llmove)(); /* Move between states */
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char *llfinal; /* Final state descriptions */
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int (*llactr)(); /* Action routine */
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int *lllook; /* Look ahead vector if != NULL */
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char *llign; /* Ignore char vec if != NULL */
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char *llbrk; /* Break char vec if != NULL */
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char *llill; /* Illegal char vec if != NULL */
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};
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#define NBPW 16
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#define LEXERR 256
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#define LEXSKIP (-1)
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#define EOF (-1)
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//#define NULL (0)
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#define LEXECHO(fp) {lexecho((fp));}
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#define lextext llbuf
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#define lexlast llend
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extern FILE *lexin;
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extern llstin();
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