750a6bc684
+ Addition of function prototypes and include files. + Change function definitions to ANSI C style. + Initial support for CMake + Scripts to generate compiler header is now sed based.
103 lines
2 KiB
C
103 lines
2 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* $Id$ */
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/* PREPROCESSOR: CONTROLLINE INTERPRETER */
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include "domacro.h"
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#include "parameters.h"
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#include "idf.h"
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#include "interface.h"
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#include "arith.h"
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#include "LLlex.h"
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#include "Lpars.h"
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#include "input.h"
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#include "pragma.h"
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#include "skip.h"
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#include "error.h"
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#ifdef DBSYMTAB
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#include <stb.h>
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#include <em.h>
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int IncludeLevel = 0;
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#endif
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extern char options[];
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static void do_line(unsigned int);
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struct idf* GetIdentifier(int skiponerr) /* skip the rest of the line on error */
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{
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/* returns a pointer to the descriptor of the identifier that is
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read from the input stream. When the input does not contain
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an identifier, the rest of the line is skipped when
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skiponerr is on, and a null-pointer is returned.
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The substitution of macros is disabled.
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*/
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int tok;
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struct token tk;
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tok = GetToken(&tk);
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if (tok != IDENTIFIER)
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{
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if (skiponerr && tok != EOI)
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SkipToNewLine();
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return (struct idf*)0;
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}
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return tk.tk_idf;
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}
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void domacro(void)
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{
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int tok;
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struct token tk;
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EoiForNewline = 1;
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if ((tok = GetToken(&tk)) == IDENTIFIER)
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{
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if (!strcmp(tk.tk_idf->id_text, "pragma"))
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{
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do_pragma();
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EoiForNewline = 0;
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return;
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}
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}
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else if (tok == INTEGER)
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{
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do_line((unsigned int)tk.tk_ival);
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EoiForNewline = 0;
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return;
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}
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lexerror("illegal # line");
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EoiForNewline = 0;
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SkipToNewLine();
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}
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static void do_line(unsigned int l)
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{
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struct token tk;
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int t = GetToken(&tk);
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if (t != EOI)
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SkipToNewLine();
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LineNumber = l; /* the number of the next input line */
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if (t == STRING)
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{ /* is there a filespecifier? */
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/*
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* Do not attempt to free the old string, since it might
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* be used in a def structure.
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*/
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#ifdef DBSYMTAB
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if (options['g'] && strcmp(FileName, tk.tk_bts) != 0)
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{
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C_ms_std(tk.tk_bts, N_SOL, 0);
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}
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#endif /* DBSYMTAB */
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FileName = tk.tk_bts;
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}
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}
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