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- From: decvax!minow
- Date: Tue, 8 Jan 85 00:05:58 est
- Subject: cpp3.arc
-
- -h- cpp4.c Mon Jan 7 23:59:34 1985 cpp4.c
- /*
- * C P P 4 . C
- * M a c r o D e f i n i t i o n s
- *
- * Edit History
- * 31-Aug-84 MM USENET net.sources release
- * 04-Oct-84 MM __LINE__ and __FILE__ must call ungetstring()
- * so they work correctly with token concatenation.
- * Added string formal recognition.
- * 25-Oct-84 MM "Short-circuit" evaluate #if's so that we
- * don't print unnecessary error messages for
- * #if !defined(FOO) && FOO != 0 && 10 / FOO ...
- * 31-Oct-84 ado/MM Added token concatenation
- * 6-Nov-84 MM Split off eval stuff
- */
-
- #include <stdio.h>
- #include <ctype.h>
- #include "cppdef.h"
- #include "cpp.h"
- /*
- * parm[], parmp, and parlist[] are used to store #define() argument
- * lists. nargs contains the actual number of parameters stored.
- */
- static char parm[NPARMWORK + 1]; /* define param work buffer */
- static char *parmp; /* Free space in parm */
- static char *parlist[LASTPARM]; /* -> start of each parameter */
- static int nargs; /* Parameters for this macro */
-
- dodefine()
- /*
- * Called from control when a #define is scanned. This module
- * parses formal parameters and the replacement string. When
- * the formal parameter name is encountered in the replacement
- * string, it is replaced by a character in the range 128 to
- * 128+NPARAM (this allows up to 32 parameters within the
- * Dec Multinational range). If cpp is ported to an EBCDIC
- * machine, you will have to make other arrangements.
- *
- * There is some special case code to distinguish
- * #define foo bar
- * from #define foo() bar
- *
- * Also, we make sure that
- * #define foo foo
- * expands to "foo" but doesn't put cpp into an infinite loop.
- *
- * A warning message is printed if you redefine a symbol to a
- * different text. I.e,
- * #define foo 123
- * #define foo 123
- * is ok, but
- * #define foo 123
- * #define foo +123
- * is not.
- *
- * The following subroutines are called from define():
- * checkparm called when a token is scanned. It checks through the
- * array of formal parameters. If a match is found, the
- * token is replaced by a control byte which will be used
- * to locate the parameter when the macro is expanded.
- * textput puts a string in the macro work area (parm[]), updating
- * parmp to point to the first free byte in parm[].
- * textput() tests for work buffer overflow.
- * charput puts a single character in the macro work area (parm[])
- * in a manner analogous to textput().
- */
- {
- register int c;
- register DEFBUF *dp; /* -> new definition */
- int isredefine; /* TRUE if redefined */
- char *old; /* Remember redefined */
- extern int save(); /* Save char in work[] */
-
- if (type[(c = skipws())] != LET)
- goto bad_define;
- isredefine = FALSE; /* Set if redefining */
- if ((dp = lookid(c)) == NULL) /* If not known now */
- dp = defendel(token, FALSE); /* Save the name */
- else { /* It's known: */
- isredefine = TRUE; /* Remember this fact */
- old = dp->repl; /* Remember replacement */
- dp->repl = NULL; /* No replacement now */
- }
- parlist[0] = parmp = parm; /* Setup parm buffer */
- if ((c = get()) == '(') { /* With arguments? */
- nargs = 0; /* Init formals counter */
- do { /* Collect formal parms */
- if (nargs >= LASTPARM)
- cfatal("Too many arguments for macro", NULLST);
- else if ((c = skipws()) == ')')
- break; /* Got them all */
- else if (type[c] != LET) /* Bad formal syntax */
- goto bad_define;
- scanid(c); /* Get the formal param */
- parlist[nargs++] = parmp; /* Save its start */
- textput(token); /* Save text in parm[] */
- } while ((c = skipws()) == ','); /* Get another argument */
- if (c != ')') /* Must end at ) */
- goto bad_define;
- c = ' '; /* Will skip to body */
- }
- else {
- /*
- * DEF_NOARGS is needed to distinguish between
- * "#define foo" and "#define foo()".
- */
- nargs = DEF_NOARGS; /* No () parameters */
- }
- if (type[c] == SPA) /* At whitespace? */
- c = skipws(); /* Not any more. */
- workp = work; /* Replacement put here */
- inmacro = TRUE; /* Keep \<newline> now */
- while (c != EOF_CHAR && c != '\n') { /* Compile macro body */
- #if OK_CONCAT
- if (c == '#') { /* Token concatenation? */
- while (workp > work && type[workp[-1]] == SPA)
- --workp; /* Erase leading spaces */
- save(TOK_SEP); /* Stuff a delimiter */
- c = skipws(); /* Eat whitespace */
- if (type[c] == LET) /* Another token here? */
- ; /* Stuff it normally */
- else if (type[c] == DIG) { /* Digit string after? */
- while (type[c] == DIG) { /* Stuff the digits */
- save(c);
- c = get();
- }
- save(TOK_SEP); /* Delimit 2nd token */
- }
- else {
- ciwarn("Strange character after # (%d.)", c);
- }
- continue;
- }
- #endif
- switch (type[c]) {
- case LET:
- checkparm(c, dp); /* Might be a formal */
- break;
-
- case DIG: /* Number in mac. body */
- case DOT: /* Maybe a float number */
- scannumber(c, save); /* Scan it off */
- break;
-
- case QUO: /* String in mac. body */
- #if STRING_FORMAL
- stparmscan(c, dp); /* Do string magic */
- #else
- stparmscan(c);
- #endif
- break;
-
- case BSH: /* Backslash */
- save('\\');
- if ((c = get()) == '\n')
- wrongline = TRUE;
- save(c);
- break;
-
- case SPA: /* Absorb whitespace */
- /*
- * Note: the "end of comment" marker is passed on
- * to allow comments to separate tokens.
- */
- if (workp[-1] == ' ') /* Absorb multiple */
- break; /* spaces */
- else if (c == '\t')
- c = ' '; /* Normalize tabs */
- /* Fall through to store character */
- default: /* Other character */
- save(c);
- break;
- }
- c = get();
- }
- inmacro = FALSE; /* Stop newline hack */
- unget(); /* For control check */
- if (workp > work && workp[-1] == ' ') /* Drop trailing blank */
- workp--;
- *workp = EOS; /* Terminate work */
- dp->repl = savestring(work); /* Save the string */
- dp->nargs = nargs; /* Save arg count */
- #if DEBUG
- if (debug)
- dumpadef("macro definition", dp);
- #endif
- if (isredefine) { /* Error if redefined */
- if ((old != NULL && dp->repl != NULL && !streq(old, dp->repl))
- || (old == NULL && dp->repl != NULL)
- || (old != NULL && dp->repl == NULL)) {
- cerror("Redefining defined variable \"%s\"", dp->name);
- }
- if (old != NULL) /* We don't need the */
- free(old); /* old definition now. */
- }
- return;
-
- bad_define:
- cerror("#define syntax error", NULLST);
- inmacro = FALSE; /* Stop <newline> hack */
- }
-
- checkparm(c, dp)
- register int c;
- DEFBUF *dp;
- /*
- * Replace this param if it's defined. Note that the macro name is a
- * possible replacement token. We stuff DEF_MAGIC in front of the token
- * which is treated as a LETTER by the token scanner and eaten by
- * the output routine. This prevents the macro expander from
- * looping if someone writes "#define foo foo".
- */
- {
- register int i;
- register char *cp;
-
- scanid(c); /* Get parm to token[] */
- for (i = 0; i < nargs; i++) { /* For each argument */
- if (streq(parlist[i], token)) { /* If it's known */
- save(i + MAC_PARM); /* Save a magic cookie */
- return; /* And exit the search */
- }
- }
- if (streq(dp->name, token)) /* Macro name in body? */
- save(DEF_MAGIC); /* Save magic marker */
- for (cp = token; *cp != EOS;) /* And save */
- save(*cp++); /* The token itself */
- }
-
- #if STRING_FORMAL
- stparmscan(delim, dp)
- int delim;
- register DEFBUF *dp;
- /*
- * Scan the string (starting with the given delimiter).
- * The token is replaced if it is the only text in this string or
- * character constant. The algorithm follows checkparm() above.
- * Note that scanstring() has approved of the string.
- */
- {
- register int c;
-
- /*
- * Warning -- this code hasn't been tested for a while.
- * It exists only to preserve compatibility with earlier
- * implementations of cpp. It is not part of the Draft
- * ANSI Standard C language.
- */
- save(delim);
- instring = TRUE;
- while ((c = get()) != delim
- && c != '\n'
- && c != EOF_CHAR) {
- if (type[c] == LET) /* Maybe formal parm */
- checkparm(c, dp);
- else {
- save(c);
- if (c == '\\')
- save(get());
- }
- }
- instring = FALSE;
- if (c != delim)
- cerror("Unterminated string in macro body", NULLST);
- save(c);
- }
- #else
- stparmscan(delim)
- int delim;
- /*
- * Normal string parameter scan.
- */
- {
- register char *wp;
- register int i;
- extern int save();
-
- wp = workp; /* Here's where it starts */
- if (!scanstring(delim, save))
- return; /* Exit on scanstring error */
- workp[-1] = EOS; /* Erase trailing quote */
- wp++; /* -> first string content byte */
- for (i = 0; i < nargs; i++) {
- if (streq(parlist[i], wp)) {
- *wp++ = MAC_PARM + PAR_MAC; /* Stuff a magic marker */
- *wp++ = (i + MAC_PARM); /* Make a formal marker */
- *wp = wp[-3]; /* Add on closing quote */
- workp = wp + 1; /* Reset string end */
- return;
- }
- }
- workp[-1] = wp[-1]; /* Nope, reset end quote. */
- }
- #endif
-
- doundef()
- /*
- * Remove the symbol from the defined list.
- * Called from the #control processor.
- */
- {
- register int c;
-
- if (type[(c = skipws())] != LET)
- cerror("Illegal #undef argument", NULLST);
- else {
- scanid(c); /* Get name to token[] */
- if (defendel(token, TRUE) == NULL) {
- cwarn("Symbol \"%s\" not defined in #undef", token);
- }
- }
- }
-
- textput(text)
- char *text;
- /*
- * Put the string in the parm[] buffer.
- */
- {
- register int size;
-
- size = strlen(text) + 1;
- if ((parmp + size) >= &parm[NPARMWORK])
- cfatal("Macro work area overflow", NULLST);
- else {
- strcpy(parmp, text);
- parmp += size;
- }
- }
-
- charput(c)
- register int c;
- /*
- * Put the byte in the parm[] buffer.
- */
- {
- if (parmp >= &parm[NPARMWORK])
- cfatal("Macro work area overflow", NULLST);
- else {
- *parmp++ = c;
- }
- }
-
- /*
- * M a c r o E x p a n s i o n
- */
-
- static DEFBUF *macro; /* Catches start of infinite macro */
-
- expand(tokenp)
- register DEFBUF *tokenp;
- /*
- * Expand a macro. Called from the cpp mainline routine (via subroutine
- * macroid()) when a token is found in the symbol table. It calls
- * expcollect() to parse actual parameters, checking for the correct number.
- * It then creates a "file" containing a single line containing the
- * macro with actual parameters inserted appropriately. This is
- * "pushed back" onto the input stream. (When the get() routine runs
- * off the end of the macro line, it will dismiss the macro itself.)
- */
- {
- register int c;
- register FILEINFO *file;
- extern FILEINFO *getfile();
-
- #if DEBUG
- if (debug)
- dumpadef("expand entry", tokenp);
- #endif
- /*
- * If no macro is pending, save the name of this macro
- * for an eventual error message.
- */
- if (recursion++ == 0)
- macro = tokenp;
- else if (recursion == RECURSION_LIMIT) {
- cerror("Recursive macro definition of \"%s\"", tokenp->name);
- fprintf(stderr, "(Defined by \"%s\")\n", macro->name);
- if (rec_recover) {
- do {
- c = get();
- } while (infile != NULL && infile->fp == NULL);
- unget();
- recursion = 0;
- return;
- }
- }
- /*
- * Here's a macro to expand.
- */
- nargs = 0; /* Formals counter */
- parmp = parm; /* Setup parm buffer */
- switch (tokenp->nargs) {
- case (-2): /* __LINE__ */
- sprintf(work, "%d", line);
- ungetstring(work);
- break;
-
- case (-3): /* __FILE__ */
- for (file = infile; file != NULL; file = file->parent) {
- if (file->fp != NULL) {
- sprintf(work, "\"%s\"", (file->progname != NULL)
- ? file->progname : file->filename);
- ungetstring(work);
- break;
- }
- }
- break;
-
- default:
- /*
- * Nothing funny about this macro.
- */
- if (tokenp->nargs < 0)
- cfatal("Bug: Illegal __ macro \"%s\"", tokenp->name);
- while ((c = skipws()) == '\n') /* Look for (, skipping */
- wrongline = TRUE; /* spaces and newlines */
- if (c != '(') {
- /*
- * If the programmer writes
- * #define foo() ...
- * ...
- * foo [no ()]
- * just write foo to the output stream.
- */
- unget();
- cwarn("Macro \"%s\" needs arguments", tokenp->name);
- fputs(tokenp->name, stdout);
- return;
- }
- else if (expcollect()) { /* Collect arguments */
- if (tokenp->nargs != nargs) { /* Should be an error? */
- cwarn("Wrong number of macro arguments for \"%s\"",
- tokenp->name);
- }
- #if DEBUG
- if (debug)
- dumpparm("expand");
- #endif
- } /* Collect arguments */
- case DEF_NOARGS: /* No parameters just stuffs */
- expstuff(tokenp); /* Do actual parameters */
- } /* nargs switch */
- }
-
- FILE_LOCAL int
- expcollect()
- /*
- * Collect the actual parameters for this macro. TRUE if ok.
- */
- {
- register int c;
- register int paren; /* For embedded ()'s */
- extern int charput();
-
- for (;;) {
- paren = 0; /* Collect next arg. */
- while ((c = skipws()) == '\n') /* Skip over whitespace */
- wrongline = TRUE; /* and newlines. */
- if (c == ')') { /* At end of all args? */
- /*
- * Note that there is a guard byte in parm[]
- * so we don't have to check for overflow here.
- */
- *parmp = EOS; /* Make sure terminated */
- break; /* Exit collection loop */
- }
- else if (nargs >= LASTPARM)
- cfatal("Too many arguments in macro expansion", NULLST);
- parlist[nargs++] = parmp; /* At start of new arg */
- for (;; c = cget()) { /* Collect arg's bytes */
- if (c == EOF_CHAR) {
- cerror("end of file within macro argument", NULLST);
- return (FALSE); /* Sorry. */
- }
- else if (c == '\\') { /* Quote next character */
- charput(c); /* Save the \ for later */
- charput(cget()); /* Save the next char. */
- continue; /* And go get another */
- }
- else if (type[c] == QUO) { /* Start of string? */
- scanstring(c, charput); /* Scan it off */
- continue; /* Go get next char */
- }
- else if (c == '(') /* Worry about balance */
- paren++; /* To know about commas */
- else if (c == ')') { /* Other side too */
- if (paren == 0) { /* At the end? */
- unget(); /* Look at it later */
- break; /* Exit arg getter. */
- }
- paren--; /* More to come. */
- }
- else if (c == ',' && paren == 0) /* Comma delimits args */
- break;
- else if (c == '\n') /* Newline inside arg? */
- wrongline = TRUE; /* We'll need a #line */
- charput(c); /* Store this one */
- } /* Collect an argument */
- charput(EOS); /* Terminate argument */
- #if DEBUG
- if (debug)
- printf("parm[%d] = \"%s\"\n", nargs, parlist[nargs - 1]);
- #endif
- } /* Collect all args. */
- return (TRUE); /* Normal return */
- }
-
- FILE_LOCAL
- expstuff(tokenp)
- DEFBUF *tokenp; /* Current macro being expanded */
- /*
- * Stuff the macro body, replacing formal parameters by actual parameters.
- */
- {
- register int c; /* Current character */
- register char *inp; /* -> repl string */
- register char *defp; /* -> macro output buff */
- int size; /* Actual parm. size */
- char *defend; /* -> output buff end */
- int string_magic; /* String formal hack */
- FILEINFO *file; /* Funny #include */
- extern FILEINFO *getfile();
-
- file = getfile(NBUFF, tokenp->name);
- inp = tokenp->repl; /* -> macro replacement */
- defp = file->buffer; /* -> output buffer */
- defend = defp + (NBUFF - 1); /* Note its end */
- if (inp != NULL) {
- while ((c = (*inp++ & 0xFF)) != EOS) {
- if (c >= MAC_PARM && c <= (MAC_PARM + PAR_MAC)) {
- string_magic = (c == (MAC_PARM + PAR_MAC));
- if (string_magic)
- c = (*inp++ & 0xFF);
- /*
- * Replace formal parameter by actual parameter string.
- */
- if ((c -= MAC_PARM) < nargs) {
- size = strlen(parlist[c]);
- if ((defp + size) >= defend)
- goto nospace;
- /*
- * Erase the extra set of quotes.
- */
- if (string_magic && defp[-1] == parlist[c][0]) {
- strcpy(defp-1, parlist[c]);
- defp += (size - 2);
- }
- else {
- strcpy(defp, parlist[c]);
- defp += size;
- }
- }
- }
- else if (defp >= defend) {
- nospace: cfatal("Out of space in macro \"%s\" arg expansion",
- tokenp->name);
- }
- else {
- *defp++ = c;
- }
- }
- }
- *defp = EOS;
- #if DEBUG
- if (debug > 1)
- printf("macroline: \"%s\"\n", file->buffer);
- #endif
- }
-
- #if DEBUG
- dumpparm(why)
- char *why;
- /*
- * Dump parameter list.
- */
- {
- register int i;
-
- printf("dump of %d parameters (%d bytes total) %s\n",
- nargs, parmp - parm, why);
- for (i = 0; i < nargs; i++) {
- printf("parm[%d] (%d) = \"%s\"\n",
- i + 1, strlen(parlist[i]), parlist[i]);
- }
- }
- #endif
- -h- cpp5.c Mon Jan 7 23:59:34 1985 cpp5.c
- /*
- * C P P 5 . C
- * E x p r e s s i o n E v a l u a t i o n
- *
- * Edit History
- * 31-Aug-84 MM USENET net.sources release
- * 04-Oct-84 MM __LINE__ and __FILE__ must call ungetstring()
- * so they work correctly with token concatenation.
- * Added string formal recognition.
- * 25-Oct-84 MM "Short-circuit" evaluate #if's so that we
- * don't print unnecessary error messages for
- * #if !defined(FOO) && FOO != 0 && 10 / FOO ...
- * 31-Oct-84 ado/MM Added token concatenation
- * 6-Nov-84 MM Split from #define stuff, added sizeof stuff
- * 19-Nov-84 ado #if error returns TRUE for (sigh) compatibility
- */
-
- #include <stdio.h>
- #include <ctype.h>
- #include "cppdef.h"
- #include "cpp.h"
-
- /*
- * Evaluate an #if expression.
- */
-
- static char *opname[] = { /* For debug and error messages */
- "end of expression", "val", "id",
- "+", "-", "*", "/", "%",
- "<<", ">>", "&", "|", "^",
- "==", "!=", "<", "<=", ">=", ">",
- "&&", "||", "?", ":", ",",
- "unary +", "unary -", "~", "!", "(", ")", "(none)",
- };
-
- /*
- * opdope[] has the operator precedence:
- * Bits
- * 7 Unused (so the value is always positive)
- * 6-2 Precedence (000x .. 017x)
- * 1-0 Binary op. flags:
- * 01 The binop flag should be set/cleared when this op is seen.
- * 10 The new value of the binop flag.
- * Note: Expected, New binop
- * constant 0 1 Binop, end, or ) should follow constants
- * End of line 1 0 End may not be preceeded by an operator
- * binary 1 0 Binary op follows a value, value follows.
- * unary 0 0 Unary op doesn't follow a value, value follows
- * ( 0 0 Doesn't follow value, value or unop follows
- * ) 1 1 Follows value. Op follows.
- */
-
- static char opdope[OP_MAX] = {
- 0001, /* End of expression */
- 0002, /* Digit */
- 0000, /* Letter (identifier) */
- 0141, 0141, 0151, 0151, 0151, /* ADD, SUB, MUL, DIV, MOD */
- 0131, 0131, 0101, 0071, 0071, /* ASL, ASR, AND, OR, XOR */
- 0111, 0111, 0121, 0121, 0121, 0121, /* EQ, NE, LT, LE, GE, GT */
- 0061, 0051, 0041, 0041, 0031, /* ANA, ORO, QUE, COL, CMA */
- /*
- * Unary op's follow
- */
- 0160, 0160, 0160, 0160, /* NEG, PLU, COM, NOT */
- 0170, 0013, 0023, /* LPA, RPA, END */
- };
- /*
- * OP_QUE and OP_RPA have alternate precedences:
- */
- #define OP_RPA_PREC 0013
- #define OP_QUE_PREC 0034
-
- /*
- * S_ANDOR and S_QUEST signal "short-circuit" boolean evaluation, so that
- * #if FOO != 0 && 10 / FOO ...
- * doesn't generate an error message. They are stored in optab.skip.
- */
- #define S_ANDOR 2
- #define S_QUEST 1
-
- typedef struct optab {
- char op; /* Operator */
- char prec; /* Its precedence */
- char skip; /* Short-circuit: TRUE to skip */
- } OPTAB;
- static int evalue; /* Current value from evallex() */
-
- #ifdef nomacargs
- FILE_LOCAL int
- isbinary(op)
- register int op;
- {
- return (op >= FIRST_BINOP && op <= LAST_BINOP);
- }
-
- FILE_LOCAL int
- isunary(op)
- register int op;
- {
- return (op >= FIRST_UNOP && op <= LAST_UNOP);
- }
- #else
- #define isbinary(op) (op >= FIRST_BINOP && op <= LAST_BINOP)
- #define isunary(op) (op >= FIRST_UNOP && op <= LAST_UNOP)
- #endif
-
- /*
- * The following definitions are used to specify basic variable sizes.
- */
-
- #ifndef S_CHAR
- #define S_CHAR (sizeof (char))
- #endif
- #ifndef S_SINT
- #define S_SINT (sizeof (short int))
- #endif
- #ifndef S_INT
- #define S_INT (sizeof (int))
- #endif
- #ifndef S_LINT
- #define S_LINT (sizeof (long int))
- #endif
- #ifndef S_FLOAT
- #define S_FLOAT (sizeof (float))
- #endif
- #ifndef S_DOUBLE
- #define S_DOUBLE (sizeof (double))
- #endif
- #ifndef S_PCHAR
- #define S_PCHAR (sizeof (char *))
- #endif
- #ifndef S_PSINT
- #define S_PSINT (sizeof (short int *))
- #endif
- #ifndef S_PINT
- #define S_PINT (sizeof (int *))
- #endif
- #ifndef S_PLINT
- #define S_PLINT (sizeof (long int *))
- #endif
- #ifndef S_PFLOAT
- #define S_PFLOAT (sizeof (float *))
- #endif
- #ifndef S_PDOUBLE
- #define S_PDOUBLE (sizeof (double *))
- #endif
- #ifndef S_PFPTR
- #define S_PFPTR (sizeof (int (*)()))
- #endif
-
- typedef struct types {
- short type; /* This is the bit if */
- char *name; /* this is the token word */
- } TYPES;
-
- static TYPES basic_types[] = {
- { T_CHAR, "char", },
- { T_INT, "int", },
- { T_FLOAT, "float", },
- { T_DOUBLE, "double", },
- { T_SHORT, "short", },
- { T_LONG, "long", },
- { T_SIGNED, "signed", },
- { T_UNSIGNED, "unsigned", },
- { 0, NULL, }, /* Signal end */
- };
-
- /*
- * Test_table[] is used to test for illegal combinations.
- */
- static short test_table[] = {
- T_FLOAT | T_DOUBLE | T_LONG | T_SHORT,
- T_FLOAT | T_DOUBLE | T_CHAR | T_INT,
- T_FLOAT | T_DOUBLE | T_SIGNED | T_UNSIGNED,
- T_LONG | T_SHORT | T_CHAR,
- 0 /* end marker */
- };
-
- /*
- * The order of this table is important -- it is also referenced by
- * the command line processor to allow run-time overriding of the
- * built-in size values. The order must not be changed:
- * char, short, int, long, float, double (func pointer)
- */
- SIZES size_table[] = {
- { T_CHAR, S_CHAR, S_PCHAR }, /* char */
- { T_SHORT, S_SINT, S_PSINT }, /* short int */
- { T_INT, S_INT, S_PINT }, /* int */
- { T_LONG, S_LINT, S_PLINT }, /* long */
- { T_FLOAT, S_FLOAT, S_PFLOAT }, /* float */
- { T_DOUBLE, S_DOUBLE, S_PDOUBLE }, /* double */
- { T_FPTR, 0, S_PFPTR }, /* int (*()) */
- { 0, 0, 0 }, /* End of table */
- };
-
- int
- eval()
- /*
- * Evaluate an expression. Straight-forward operator precedence.
- * This is called from control() on encountering an #if statement.
- * It calls the following routines:
- * evallex Lexical analyser -- returns the type and value of
- * the next input token.
- * evaleval Evaluate the current operator, given the values on
- * the value stack. Returns a pointer to the (new)
- * value stack.
- * For compatiblity with older cpp's, this return returns 1 (TRUE)
- * if a syntax error is detected.
- */
- {
- register int op; /* Current operator */
- register int *valp; /* -> value vector */
- register OPTAB *opp; /* Operator stack */
- int prec; /* Op precedence */
- int binop; /* Set if binary op. needed */
- int op1; /* Operand from stack */
- int skip; /* For short-circuit testing */
- int value[NEXP]; /* Value stack */
- OPTAB opstack[NEXP]; /* Operand stack */
- extern int *evaleval(); /* Does actual evaluation */
-
- valp = value;
- opp = opstack;
- opp->op = OP_END; /* Mark bottom of stack */
- opp->prec = opdope[OP_END]; /* And its precedence */
- opp->skip = 0; /* Not skipping now */
- binop = 0;
- again: ;
- #ifdef DEBUG_EVAL
- printf("In #if at again: skip = %d, binop = %d, line is: %s",
- opp->skip, binop, infile->bptr);
- #endif
- if ((op = evallex(opp->skip)) == OP_SUB && binop == 0)
- op = OP_NEG; /* Unary minus */
- else if (op == OP_ADD && binop == 0)
- op = OP_PLU; /* Unary plus */
- else if (op == OP_FAIL)
- return (1); /* Error in evallex */
- #ifdef DEBUG_EVAL
- printf("op = %s, opdope = %03o, binop = %d, skip = %d\n",
- opname[op], opdope[op], binop, opp->skip);
- #endif
- if (op == DIG) { /* Value? */
- if (binop != 0) {
- cerror("misplaced constant in #if", NULLST);
- return (1);
- }
- else if (valp >= &value[NEXP-1]) {
- cerror("#if value stack overflow", NULLST);
- return (1);
- }
- else {
- #ifdef DEBUG_EVAL
- printf("pushing %d onto value stack[%d]\n",
- evalue, valp - value);
- #endif
- *valp++ = evalue;
- binop = 1;
- }
- goto again;
- }
- else if (op > OP_END) {
- cerror("Illegal #if line", NULLST);
- return (1);
- }
- prec = opdope[op];
- if (binop != (prec & 1)) {
- cerror("Operator %s in incorrect context", opname[op]);
- return (1);
- }
- binop = (prec & 2) >> 1;
- for (;;) {
- #ifdef DEBUG_EVAL
- printf("op %s, prec %d., stacked op %s, prec %d, skip %d\n",
- opname[op], prec, opname[opp->op], opp->prec, opp->skip);
- #endif
- if (prec > opp->prec) {
- if (op == OP_LPA)
- prec = OP_RPA_PREC;
- else if (op == OP_QUE)
- prec = OP_QUE_PREC;
- op1 = opp->skip; /* Save skip for test */
- /*
- * Push operator onto op. stack.
- */
- opp++;
- if (opp >= &opstack[NEXP]) {
- cerror("expression stack overflow at op \"%s\"",
- opname[op]);
- return (1);
- }
- opp->op = op;
- opp->prec = prec;
- skip = (valp[-1] != 0); /* Short-circuit tester */
- /*
- * Do the short-circuit stuff here. Short-circuiting
- * stops automagically when operators are evaluated.
- */
- if ((op == OP_ANA && !skip)
- || (op == OP_ORO && skip))
- opp->skip = S_ANDOR; /* And/or skip starts */
- else if (op == OP_QUE) /* Start of ?: operator */
- opp->skip = (op1 & S_ANDOR) | ((!skip) ? S_QUEST : 0);
- else if (op == OP_COL) { /* : inverts S_QUEST */
- opp->skip = (op1 & S_ANDOR)
- | (((op1 & S_QUEST) != 0) ? 0 : S_QUEST);
- }
- else { /* Other ops leave */
- opp->skip = op1; /* skipping unchanged. */
- }
- #ifdef DEBUG_EVAL
- printf("stacking %s, valp[-1] == %d at %s",
- opname[op], valp[-1], infile->bptr);
- dumpstack(opstack, opp, value, valp);
- #endif
- goto again;
- }
- /*
- * Pop operator from op. stack and evaluate it.
- * End of stack and '(' are specials.
- */
- skip = opp->skip; /* Remember skip value */
- switch ((op1 = opp->op)) { /* Look at stacked op */
- case OP_END: /* Stack end marker */
- if (op == OP_EOE)
- return (valp[-1]); /* Finished ok. */
- goto again; /* Read another op. */
-
- case OP_LPA: /* ( on stack */
- if (op != OP_RPA) { /* Matches ) on input */
- cerror("unbalanced paren's, op is \"%s\"", opname[op]);
- return (1);
- }
- opp--; /* Unstack it */
- /* goto again; -- Fall through */
-
- case OP_QUE:
- goto again; /* Evaluate true expr. */
-
- case OP_COL: /* : on stack. */
- opp--; /* Unstack : */
- if (opp->op != OP_QUE) { /* Matches ? on stack? */
- cerror("Misplaced '?' or ':', previous operator is %s",
- opname[opp->op]);
- return (1);
- }
- /*
- * Evaluate op1.
- */
- default: /* Others: */
- opp--; /* Unstack the operator */
- #ifdef DEBUG_EVAL
- printf("Stack before evaluation of %s\n", opname[op1]);
- dumpstack(opstack, opp, value, valp);
- #endif
- valp = evaleval(valp, op1, skip);
- #ifdef DEBUG_EVAL
- printf("Stack after evaluation\n");
- dumpstack(opstack, opp, value, valp);
- #endif
- } /* op1 switch end */
- } /* Stack unwind loop */
- }
-
- FILE_LOCAL int
- evallex(skip)
- int skip; /* TRUE if short-circuit evaluation */
- /*
- * Return next eval operator or value. Called from eval(). It
- * calls a special-purpose routines for 'char' strings and
- * numeric values:
- * evalchar called to evaluate 'x'
- * evalnum called to evaluate numbers.
- */
- {
- register int c, c1, t;
-
- again: do { /* Collect the token */
- c = skipws();
- if ((c = macroid(c)) == EOF_CHAR || c == '\n') {
- unget();
- return (OP_EOE); /* End of expression */
- }
- } while ((t = type[c]) == LET && catenate());
- if (t == INV) { /* Total nonsense */
- if (!skip) {
- if (isascii(c) && isprint(c))
- cierror("illegal character '%c' in #if", c);
- else
- cierror("illegal character (%d decimal) in #if", c);
- }
- return (OP_FAIL);
- }
- else if (t == QUO) { /* ' or " */
- if (c == '\'') { /* Character constant */
- evalue = evalchar(skip); /* Somewhat messy */
- #ifdef DEBUG_EVAL
- printf("evalchar returns %d.\n", evalue);
- #endif
- return (DIG); /* Return a value */
- }
- cerror("Can't use a string in an #if", NULLST);
- return (OP_FAIL);
- }
- else if (t == LET) { /* ID must be a macro */
- if (streq(token, "defined")) { /* Or defined name */
- c1 = c = skipws();
- if (c == '(') /* Allow defined(name) */
- c = skipws();
- if (type[c] == LET) {
- evalue = (lookid(c) != NULL);
- if (c1 != '(' /* Need to balance */
- || skipws() == ')') /* Did we balance? */
- return (DIG); /* Parsed ok */
- }
- cerror("Bad #if ... defined() syntax", NULLST);
- return (OP_FAIL);
- }
- else if (streq(token, "sizeof")) /* New sizeof hackery */
- return (dosizeof()); /* Gets own routine */
- /*
- * The Draft ANSI C Standard says that an undefined symbol
- * in an #if has the value zero. We are a bit pickier,
- * warning except where the programmer was careful to write
- * #if defined(foo) ? foo : 0
- */
- if (!skip)
- cwarn("undefined symbol \"%s\" in #if, 0 used", token);
- evalue = 0;
- return (DIG);
- }
- else if (t == DIG) { /* Numbers are harder */
- evalue = evalnum(c);
- #ifdef DEBUG_EVAL
- printf("evalnum returns %d.\n", evalue);
- #endif
- }
- else if (strchr("!=<>&|\\", c) != NULL) {
- /*
- * Process a possible multi-byte lexeme.
- */
- c1 = cget(); /* Peek at next char */
- switch (c) {
- case '!':
- if (c1 == '=')
- return (OP_NE);
- break;
-
- case '=':
- if (c1 != '=') { /* Can't say a=b in #if */
- unget();
- cerror("= not allowed in #if", NULLST);
- return (OP_FAIL);
- }
- return (OP_EQ);
-
- case '>':
- case '<':
- if (c1 == c)
- return ((c == '<') ? OP_ASL : OP_ASR);
- else if (c1 == '=')
- return ((c == '<') ? OP_LE : OP_GE);
- break;
-
- case '|':
- case '&':
- if (c1 == c)
- return ((c == '|') ? OP_ORO : OP_ANA);
- break;
-
- case '\\':
- if (c1 == '\n') /* Multi-line if */
- goto again;
- cerror("Unexpected \\ in #if", NULLST);
- return (OP_FAIL);
- }
- unget();
- }
- return (t);
- }
-
- FILE_LOCAL int
- dosizeof()
- /*
- * Process the sizeof (basic type) operation in an #if string.
- * Sets evalue to the size and returns
- * DIG success
- * OP_FAIL bad parse or something.
- */
- {
- register int c;
- register TYPES *tp;
- register SIZES *sizp;
- register short *testp;
- short typecode;
-
- if ((c = skipws()) != '(')
- goto nogood;
- /*
- * Scan off the tokens.
- */
- typecode = 0;
- while ((c = skipws())) {
- if ((c = macroid(c)) == EOF_CHAR || c == '\n')
- goto nogood; /* End of line is a bug */
- else if (c == '(') { /* thing (*)() func ptr */
- if (skipws() == '*'
- && skipws() == ')') { /* We found (*) */
- if (skipws() != '(') /* Let () be optional */
- unget();
- else if (skipws() != ')')
- goto nogood;
- typecode |= T_FPTR; /* Function pointer */
- }
- else { /* Junk is a bug */
- goto nogood;
- }
- }
- else if (type[c] != LET) /* Exit if not a type */
- break;
- else if (!catenate()) { /* Maybe combine tokens */
- /*
- * Look for this unexpandable token in basic_types.
- * The code accepts "int long" as well as "long int"
- * which is a minor bug as bugs go (and one shared with
- * a lot of C compilers).
- */
- for (tp = basic_types; tp->name != NULLST; tp++) {
- if (streq(token, tp->name))
- break;
- }
- if (tp->name == NULLST) {
- cerror("#if sizeof, unknown type \"%s\"", token);
- return (OP_FAIL);
- }
- typecode |= tp->type; /* Or in the type bit */
- }
- }
- /*
- * We are at the end of the type scan. Chew off '*' if necessary.
- */
- if (c == '*') {
- typecode |= T_PTR;
- c = skipws();
- }
- if (c == ')') { /* Last syntax check */
- for (testp = test_table; *testp != 0; testp++) {
- if (!bittest(typecode & *testp)) {
- cerror("#if ... sizeof: illegal type combination", NULLST);
- return (OP_FAIL);
- }
- }
- /*
- * We assume that all function pointers are the same size:
- * sizeof (int (*)()) == sizeof (float (*)())
- * We assume that signed and unsigned don't change the size:
- * sizeof (signed int) == (sizeof unsigned int)
- */
- if ((typecode & T_FPTR) != 0) /* Function pointer */
- typecode = T_FPTR | T_PTR;
- else { /* Var or var * datum */
- typecode &= ~(T_SIGNED | T_UNSIGNED);
- if ((typecode & (T_SHORT | T_LONG)) != 0)
- typecode &= ~T_INT;
- }
- if ((typecode & ~T_PTR) == 0) {
- cerror("#if sizeof() error, no type specified", NULLST);
- return (OP_FAIL);
- }
- /*
- * Exactly one bit (and possibly T_PTR) may be set.
- */
- for (sizp = size_table; sizp->bits != 0; sizp++) {
- if ((typecode & ~T_PTR) == sizp->bits) {
- evalue = ((typecode & T_PTR) != 0)
- ? sizp->psize : sizp->size;
- return (DIG);
- }
- } /* We shouldn't fail */
- cierror("#if ... sizeof: bug, unknown type code 0x%x", typecode);
- return (OP_FAIL);
- }
-
- nogood: unget();
- cerror("#if ... sizeof() syntax error", NULLST);
- return (OP_FAIL);
- }
-
- FILE_LOCAL int
- bittest(value)
- /*
- * TRUE if value is zero or exactly one bit is set in value.
- */
- {
- #if (4096 & ~(-4096)) == 0
- return ((value & ~(-value)) == 0);
- #else
- /*
- * Do it the hard way (for non 2's complement machines)
- */
- return (value == 0 || value ^ (value - 1) == (value * 2 - 1));
- #endif
- }
-
- FILE_LOCAL int
- evalnum(c)
- register int c;
- /*
- * Expand number for #if lexical analysis. Note: evalnum recognizes
- * the unsigned suffix, but only returns a signed int value.
- */
- {
- register int value;
- register int base;
- register int c1;
-
- if (c != '0')
- base = 10;
- else if ((c = cget()) == 'x' || c == 'X') {
- base = 16;
- c = cget();
- }
- else base = 8;
- value = 0;
- for (;;) {
- c1 = c;
- if (isascii(c) && isupper(c1))
- c1 = tolower(c1);
- if (c1 >= 'a')
- c1 -= ('a' - 10);
- else c1 -= '0';
- if (c1 < 0 || c1 >= base)
- break;
- value *= base;
- value += c1;
- c = cget();
- }
- if (c == 'u' || c == 'U') /* Unsigned nonsense */
- c = cget();
- unget();
- return (value);
- }
-
- FILE_LOCAL int
- evalchar(skip)
- int skip; /* TRUE if short-circuit evaluation */
- /*
- * Get a character constant
- */
- {
- register int c;
- register int value;
- register int count;
-
- instring = TRUE;
- if ((c = cget()) == '\\') {
- switch ((c = cget())) {
- case 'a': /* New in Standard */
- #if ('a' == '\a' || '\a' == ALERT)
- value = ALERT; /* Use predefined value */
- #else
- value = '\a'; /* Use compiler's value */
- #endif
- break;
-
- case 'b':
- value = '\b';
- break;
-
- case 'f':
- value = '\f';
- break;
-
- case 'n':
- value = '\n';
- break;
-
- case 'r':
- value = '\r';
- break;
-
- case 't':
- value = '\t';
- break;
-
- case 'v': /* New in Standard */
- #if ('v' == '\v' || '\v' == VT)
- value = VT; /* Use predefined value */
- #else
- value = '\v'; /* Use compiler's value */
- #endif
- break;
-
- case 'x': /* '\xFF' */
- count = 3;
- value = 0;
- while ((((c = get()) >= '0' && c <= '9')
- || (c >= 'a' && c <= 'f')
- || (c >= 'A' && c <= 'F'))
- && (--count >= 0)) {
- value *= 16;
- value += (c <= '9') ? (c - '0') : ((c & 0xF) + 9);
- }
- unget();
- break;
-
- default:
- if (c >= '0' && c <= '7') {
- count = 3;
- value = 0;
- while (c >= '0' && c <= '7' && --count >= 0) {
- value *= 8;
- value += (c - '0');
- c = get();
- }
- unget();
- }
- else value = c;
- break;
- }
- }
- else if (c == '\'')
- value = 0;
- else value = c;
- /*
- * We warn on multi-byte constants and try to hack
- * (big|little)endian machines.
- */
- #if BIG_ENDIAN
- count = 0;
- #endif
- while ((c = get()) != '\'' && c != EOF_CHAR && c != '\n') {
- if (!skip)
- ciwarn("multi-byte constant '%c' isn't portable", c);
- #if BIG_ENDIAN
- count += BITS_CHAR;
- value += (c << count);
- #else
- value <<= BITS_CHAR;
- value += c;
- #endif
- }
- instring = FALSE;
- return (value);
- }
-
- FILE_LOCAL int *
- evaleval(valp, op, skip)
- register int *valp;
- int op;
- int skip; /* TRUE if short-circuit evaluation */
- /*
- * Apply the argument operator to the data on the value stack.
- * One or two values are popped from the value stack and the result
- * is pushed onto the value stack.
- *
- * OP_COL is a special case.
- *
- * evaleval() returns the new pointer to the top of the value stack.
- */
- {
- register int v1, v2;
-
- if (isbinary(op))
- v2 = *--valp;
- v1 = *--valp;
- #ifdef DEBUG_EVAL
- printf("%s op %s", (isbinary(op)) ? "binary" : "unary",
- opname[op]);
- if (isbinary(op))
- printf(", v2 = %d.", v2);
- printf(", v1 = %d.\n", v1);
- #endif
- switch (op) {
- case OP_EOE:
- break;
-
- case OP_ADD:
- v1 += v2;
- break;
-
- case OP_SUB:
- v1 -= v2;
- break;
-
- case OP_MUL:
- v1 *= v2;
- break;
-
- case OP_DIV:
- case OP_MOD:
- if (v2 == 0) {
- if (!skip) {
- cwarn("%s by zero in #if, zero result assumed",
- (op == OP_DIV) ? "divide" : "mod");
- }
- v1 = 0;
- }
- else if (op == OP_DIV)
- v1 /= v2;
- else
- v1 %= v2;
- break;
-
- case OP_ASL:
- v1 <<= v2;
- break;
-
- case OP_ASR:
- v1 >>= v2;
- break;
-
- case OP_AND:
- v1 &= v2;
- break;
-
- case OP_OR:
- v1 |= v2;
- break;
-
- case OP_XOR:
- v1 ^= v2;
- break;
-
- case OP_EQ:
- v1 = (v1 == v2);
- break;
-
- case OP_NE:
- v1 = (v1 != v2);
- break;
-
- case OP_LT:
- v1 = (v1 < v2);
- break;
-
- case OP_LE:
- v1 = (v1 <= v2);
- break;
-
- case OP_GE:
- v1 = (v1 >= v2);
- break;
-
- case OP_GT:
- v1 = (v1 > v2);
- break;
-
- case OP_ANA:
- v1 = (v1 && v2);
- break;
-
- case OP_ORO:
- v1 = (v1 || v2);
- break;
-
- case OP_COL:
- /*
- * v1 has the "true" value, v2 the "false" value.
- * The top of the value stack has the test.
- */
- v1 = (*--valp) ? v1 : v2;
- break;
-
- case OP_NEG:
- v1 = (-v1);
- break;
-
- case OP_PLU:
- break;
-
- case OP_COM:
- v1 = ~v1;
- break;
-
- case OP_NOT:
- v1 = !v1;
- break;
-
- default:
- cierror("#if bug, operand = %d.", op);
- v1 = 0;
- }
- *valp++ = v1;
- return (valp);
- }
-
- #ifdef DEBUG_EVAL
- dumpstack(opstack, opp, value, valp)
- OPTAB opstack[NEXP]; /* Operand stack */
- register OPTAB *opp; /* Operator stack */
- int value[NEXP]; /* Value stack */
- register int *valp; /* -> value vector */
- {
- printf("index op prec skip name -- op stack at %s", infile->bptr);
- while (opp > opstack) {
- printf(" [%2d] %2d %03o %d %s\n", opp - opstack,
- opp->op, opp->prec, opp->skip, opname[opp->op]);
- opp--;
- }
- while (--valp >= value) {
- printf("value[%d] = %d\n", (valp - value), *valp);
- }
- }
- #endif
-
- -h- cpp6.c Mon Jan 7 23:59:34 1985 cpp6.c
- /*
- * C P P 6 . C
- * S u p p o r t R o u t i n e s
- *
- * Edit History
- * 25-May-84 MM Added 8-bit support to type table.
- * 30-May-84 ARF sharp() should output filename in quotes
- * 02-Aug-84 MM Newline and #line hacking. sharp() now in cpp1.c
- * 31-Aug-84 MM USENET net.sources release
- * 11-Sep-84 ado/MM Keepcomments, also line number pathological
- * 12-Sep-84 ado/MM bug if comment changes to space and we unget later.
- * 03-Oct-84 gkr/MM Fixed scannumber bug for '.e' (as in struct.element).
- * 04-Oct-84 MM Added ungetstring() for token concatenation
- * 08-Oct-84 MM Yet another attack on number scanning
- * 31-Oct-84 ado Parameterized $ in identifiers
- * 2-Nov-84 MM Token concatenation is messier than I thought
- * 6-Dec-84 MM \<nl> is everywhere invisible.
- */
-
- #include <stdio.h>
- #include <ctype.h>
- #include "cppdef.h"
- #include "cpp.h"
-
- /*
- * skipnl() skips over input text to the end of the line.
- * skipws() skips over "whitespace" (spaces or tabs), but
- * not skip over the end of the line. It skips over
- * TOK_SEP, however (though that shouldn't happen).
- * scanid() reads the next token (C identifier) into token[].
- * The caller has already read the first character of
- * the identifier. Unlike macroid(), the token is
- * never expanded.
- * macroid() reads the next token (C identifier) into token[].
- * If it is a #defined macro, it is expanded, and
- * macroid() returns TRUE, otherwise, FALSE.
- * catenate() Does the dirty work of token concatenation, TRUE if it did.
- * scanstring() Reads a string from the input stream, calling
- * a user-supplied function for each character.
- * This function may be output() to write the
- * string to the output file, or save() to save
- * the string in the work buffer.
- * scannumber() Reads a C numeric constant from the input stream,
- * calling the user-supplied function for each
- * character. (output() or save() as noted above.)
- * save() Save one character in the work[] buffer.
- * savestring() Saves a string in malloc() memory.
- * getfile() Initialize a new FILEINFO structure, called when
- * #include opens a new file, or a macro is to be
- * expanded.
- * getmem() Get a specified number of bytes from malloc memory.
- * output() Write one character to stdout (calling putchar) --
- * implemented as a function so its address may be
- * passed to scanstring() and scannumber().
- * lookid() Scans the next token (identifier) from the input
- * stream. Looks for it in the #defined symbol table.
- * Returns a pointer to the definition, if found, or NULL
- * if not present. The identifier is stored in token[].
- * defnedel() Define enter/delete subroutine. Updates the
- * symbol table.
- * get() Read the next byte from the current input stream,
- * handling end of (macro/file) input and embedded
- * comments appropriately. Note that the global
- * instring is -- essentially -- a parameter to get().
- * cget() Like get(), but skip over TOK_SEP.
- * unget() Push last gotten character back on the input stream.
- * cerror(), cwarn(), cfatal(), cierror(), ciwarn()
- * These routines format an print messages to the user.
- * cerror & cwarn take a format and a single string argument.
- * cierror & ciwarn take a format and a single int (char) argument.
- * cfatal takes a format and a single string argument.
- */
-
- /*
- * This table must be rewritten for a non-Ascii machine.
- *
- * Note that several "non-visible" characters have special meaning:
- * Hex 1D DEF_MAGIC -- a flag to prevent #define recursion.
- * Hex 1E TOK_SEP -- a delimiter for token concatenation
- * Hex 1F COM_SEP -- a zero-width whitespace for comment concatenation
- */
- #if TOK_SEP != 0x1E || COM_SEP != 0x1F || DEF_MAGIC != 0x1D
- << error type table isn't correct >>
- #endif
-
- #if OK_DOLLAR
- #define DOL LET
- #else
- #define DOL 000
- #endif
-
- char type[256] = { /* Character type codes Hex */
- END, 000, 000, 000, 000, 000, 000, 000, /* 00 */
- 000, SPA, 000, 000, 000, 000, 000, 000, /* 08 */
- 000, 000, 000, 000, 000, 000, 000, 000, /* 10 */
- 000, 000, 000, 000, 000, LET, 000, SPA, /* 18 */
- SPA,OP_NOT, QUO, 000, DOL,OP_MOD,OP_AND, QUO, /* 20 !"#$%&' */
- OP_LPA,OP_RPA,OP_MUL,OP_ADD, 000,OP_SUB, DOT,OP_DIV, /* 28 ()*+,-./ */
- DIG, DIG, DIG, DIG, DIG, DIG, DIG, DIG, /* 30 01234567 */
- DIG, DIG,OP_COL, 000, OP_LT, OP_EQ, OP_GT,OP_QUE, /* 38 89:;<=>? */
- 000, LET, LET, LET, LET, LET, LET, LET, /* 40 @ABCDEFG */
- LET, LET, LET, LET, LET, LET, LET, LET, /* 48 HIJKLMNO */
- LET, LET, LET, LET, LET, LET, LET, LET, /* 50 PQRSTUVW */
- LET, LET, LET, 000, BSH, 000,OP_XOR, LET, /* 58 XYZ[\]^_ */
- 000, LET, LET, LET, LET, LET, LET, LET, /* 60 `abcdefg */
- LET, LET, LET, LET, LET, LET, LET, LET, /* 68 hijklmno */
- LET, LET, LET, LET, LET, LET, LET, LET, /* 70 pqrstuvw */
- LET, LET, LET, 000, OP_OR, 000,OP_NOT, 000, /* 78 xyz{|}~ */
- 000, 000, 000, 000, 000, 000, 000, 000, /* 80 .. FF */
- 000, 000, 000, 000, 000, 000, 000, 000, /* 80 .. FF */
- 000, 000, 000, 000, 000, 000, 000, 000, /* 80 .. FF */
- 000, 000, 000, 000, 000, 000, 000, 000, /* 80 .. FF */
- 000, 000, 000, 000, 000, 000, 000, 000, /* 80 .. FF */
- 000, 000, 000, 000, 000, 000, 000, 000, /* 80 .. FF */
- 000, 000, 000, 000, 000, 000, 000, 000, /* 80 .. FF */
- 000, 000, 000, 000, 000, 000, 000, 000, /* 80 .. FF */
- };
-
- skipnl()
- /*
- * Skip to the end of the current input line.
- */
- {
- register int c;
-
- do { /* Skip to newline */
- c = get();
- } while (c != '\n' && c != EOF_CHAR);
- }
-
- int
- skipws()
- /*
- * Skip over whitespace
- */
- {
- register int c;
-
- do { /* Skip whitespace */
- c = get();
- #if COMMENT_INVISIBLE
- } while (type[c] == SPA || c == COM_SEP);
- #else
- } while (type[c] == SPA);
- #endif
- return (c);
- }
-
- scanid(c)
- register int c; /* First char of id */
- /*
- * Get the next token (an id) into the token buffer.
- * Note: this code is duplicated in lookid().
- * Change one, change both.
- */
- {
- register char *bp;
-
- if (c == DEF_MAGIC) /* Eat the magic token */
- c = get(); /* undefiner. */
- bp = token;
- do {
- if (bp < &token[IDMAX]) /* token dim is IDMAX+1 */
- *bp++ = c;
- c = get();
- } while (type[c] == LET || type[c] == DIG);
- unget();
- *bp = EOS;
- }
-
- int
- macroid(c)
- register int c;
- /*
- * If c is a letter, scan the id. if it's #defined, expand it and scan
- * the next character and try again.
- *
- * Else, return the character. If type[c] is a LET, the token is in token.
- */
- {
- register DEFBUF *dp;
-
- if (infile != NULL && infile->fp != NULL)
- recursion = 0;
- while (type[c] == LET && (dp = lookid(c)) != NULL) {
- expand(dp);
- c = get();
- }
- return (c);
- }
-
- int
- catenate()
- /*
- * A token was just read (via macroid).
- * If the next character is TOK_SEP, concatenate the next token
- * return TRUE -- which should recall macroid after refreshing
- * macroid's argument. If it is not TOK_SEP, unget() the character
- * and return FALSE.
- */
- {
- register int c;
- register char *token1;
-
- #if OK_CONCAT
- if (get() != TOK_SEP) { /* Token concatenation */
- unget();
- return (FALSE);
- }
- else {
- token1 = savestring(token); /* Save first token */
- c = macroid(get()); /* Scan next token */
- switch(type[c]) { /* What was it? */
- case LET: /* An identifier, ... */
- if (strlen(token1) + strlen(token) >= NWORK)
- cfatal("work buffer overflow doing %s #", token1);
- sprintf(work, "%s%s", token1, token);
- break;
-
- case DIG: /* A digit string */
- strcpy(work, token1);
- workp = work + strlen(work);
- do {
- save(c);
- } while ((c = get()) != TOK_SEP);
- /*
- * The trailing TOK_SEP is no longer needed.
- */
- save(EOS);
- break;
-
- default: /* An error, ... */
- if (isprint(c))
- cierror("Strange character '%c' after #", c);
- else
- cierror("Strange character (%d.) after #", c);
- strcpy(work, token1);
- unget();
- break;
- }
- /*
- * work has the concatenated token and token1 has
- * the first token (no longer needed). Unget the
- * new (concatenated) token after freeing token1.
- * Finally, setup to read the new token.
- */
- free(token1); /* Free up memory */
- ungetstring(work); /* Unget the new thing, */
- return (TRUE);
- }
- #else
- return (FALSE); /* Not supported */
- #endif
- }
-
- int
- scanstring(delim, outfun)
- register int delim; /* ' or " */
- int (*outfun)(); /* Output function */
- /*
- * Scan off a string. Warning if terminated by newline or EOF.
- * outfun() outputs the character -- to a buffer if in a macro.
- * TRUE if ok, FALSE if error.
- */
- {
- register int c;
-
- instring = TRUE; /* Don't strip comments */
- (*outfun)(delim);
- while ((c = get()) != delim
- && c != '\n'
- && c != EOF_CHAR) {
- (*outfun)(c);
- if (c == '\\')
- (*outfun)(get());
- }
- instring = FALSE;
- if (c == delim) {
- (*outfun)(c);
- return (TRUE);
- }
- else {
- cerror("Unterminated string", NULLST);
- unget();
- return (FALSE);
- }
- }
-
- scannumber(c, outfun)
- register int c; /* First char of number */
- register int (*outfun)(); /* Output/store func */
- /*
- * Process a number. We know that c is from 0 to 9 or dot.
- * Algorithm from Dave Conroy's Decus C.
- */
- {
- register int radix; /* 8, 10, or 16 */
- int expseen; /* 'e' seen in floater */
- int signseen; /* '+' or '-' seen */
- int octal89; /* For bad octal test */
- int dotflag; /* TRUE if '.' was seen */
-
- expseen = FALSE; /* No exponent seen yet */
- signseen = TRUE; /* No +/- allowed yet */
- octal89 = FALSE; /* No bad octal yet */
- radix = 10; /* Assume decimal */
- if ((dotflag = (c == '.')) != FALSE) { /* . something? */
- (*outfun)('.'); /* Always out the dot */
- if (type[(c = get())] != DIG) { /* If not a float numb, */
- unget(); /* Rescan strange char */
- return; /* All done for now */
- }
- } /* End of float test */
- else if (c == '0') { /* Octal or hex? */
- (*outfun)(c); /* Stuff initial zero */
- radix = 8; /* Assume it's octal */
- c = get(); /* Look for an 'x' */
- if (c == 'x' || c == 'X') { /* Did we get one? */
- radix = 16; /* Remember new radix */
- (*outfun)(c); /* Stuff the 'x' */
- c = get(); /* Get next character */
- }
- }
- for (;;) { /* Process curr. char. */
- /*
- * Note that this algorithm accepts "012e4" and "03.4"
- * as legitimate floating-point numbers.
- */
- if (radix != 16 && (c == 'e' || c == 'E')) {
- if (expseen) /* Already saw 'E'? */
- break; /* Exit loop, bad nbr. */
- expseen = TRUE; /* Set exponent seen */
- signseen = FALSE; /* We can read '+' now */
- radix = 10; /* Decimal exponent */
- }
- else if (radix != 16 && c == '.') {
- if (dotflag) /* Saw dot already? */
- break; /* Exit loop, two dots */
- dotflag = TRUE; /* Remember the dot */
- radix = 10; /* Decimal fraction */
- }
- else if (c == '+' || c == '-') { /* 1.0e+10 */
- if (signseen) /* Sign in wrong place? */
- break; /* Exit loop, not nbr. */
- /* signseen = TRUE; */ /* Remember we saw it */
- }
- else { /* Check the digit */
- switch (c) {
- case '8': case '9': /* Sometimes wrong */
- octal89 = TRUE; /* Do check later */
- case '0': case '1': case '2': case '3':
- case '4': case '5': case '6': case '7':
- break; /* Always ok */
-
- case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
- case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
- if (radix == 16) /* Alpha's are ok only */
- break; /* if reading hex. */
- default: /* At number end */
- goto done; /* Break from for loop */
- } /* End of switch */
- } /* End general case */
- (*outfun)(c); /* Accept the character */
- signseen = TRUE; /* Don't read sign now */
- c = get(); /* Read another char */
- } /* End of scan loop */
- /*
- * When we break out of the scan loop, c contains the first
- * character (maybe) not in the number. If the number is an
- * integer, allow a trailing 'L' for long and/or a trailing 'U'
- * for unsigned. If not those, push the trailing character back
- * on the input stream. Floating point numbers accept a trailing
- * 'L' for "long double".
- */
- done: if (dotflag || expseen) { /* Floating point? */
- if (c == 'l' || c == 'L') {
- (*outfun)(c);
- c = get(); /* Ungotten later */
- }
- }
- else { /* Else it's an integer */
- /*
- * We know that dotflag and expseen are both zero, now:
- * dotflag signals "saw 'L'", and
- * expseen signals "saw 'U'".
- */
- for (;;) {
- switch (c) {
- case 'l':
- case 'L':
- if (dotflag)
- goto nomore;
- dotflag = TRUE;
- break;
-
- case 'u':
- case 'U':
- if (expseen)
- goto nomore;
- expseen = TRUE;
- break;
-
- default:
- goto nomore;
- }
- (*outfun)(c); /* Got 'L' or 'U'. */
- c = get(); /* Look at next, too. */
- }
- }
- nomore: unget(); /* Not part of a number */
- if (octal89 && radix == 8)
- cwarn("Illegal digit in octal number", NULLST);
- }
-
- save(c)
- register int c;
- {
- if (workp >= &work[NWORK])
- cfatal("Work buffer overflow", NULLST);
- else *workp++ = c;
- }
-
- char *
- savestring(text)
- char *text;
- /*
- * Store a string into free memory.
- */
- {
- register char *result;
-
- result = getmem(strlen(text) + 1);
- strcpy(result, text);
- return (result);
- }
-
- FILEINFO *
- getfile(bufsize, name)
- int bufsize; /* Line or define buffer size */
- char *name; /* File or macro name string */
- /*
- * Common FILEINFO buffer initialization for a new file or macro.
- */
- {
- register FILEINFO *file;
- register int size;
-
- size = strlen(name); /* File/macro name */
- file = (FILEINFO *) getmem(sizeof (FILEINFO) + bufsize + size);
- file->parent = infile; /* Chain files together */
- file->fp = NULL; /* No file yet */
- file->filename = savestring(name); /* Save file/macro name */
- file->progname = NULL; /* No #line seen yet */
- file->unrecur = 0; /* No macro fixup */
- file->bptr = file->buffer; /* Initialize line ptr */
- file->buffer[0] = EOS; /* Force first read */
- file->line = 0; /* (Not used just yet) */
- if (infile != NULL) /* If #include file */
- infile->line = line; /* Save current line */
- infile = file; /* New current file */
- line = 1; /* Note first line */
- return (file); /* All done. */
- }
-
- char *
- getmem(size)
- int size;
- /*
- * Get a block of free memory.
- */
- {
- register char *result;
- extern char *malloc();
-
- if ((result = malloc((unsigned) size)) == NULL)
- cfatal("Out of memory", NULLST);
- return (result);
- }
-
- /*
- * C P P S y m b o l T a b l e s
- */
-
- /*
- * SBSIZE defines the number of hash-table slots for the symbol table.
- * It must be a power of 2.
- */
- #ifndef SBSIZE
- #define SBSIZE 64
- #endif
- #define SBMASK (SBSIZE - 1)
- #if (SBSIZE ^ SBMASK) != ((SBSIZE * 2) - 1)
- << error, SBSIZE must be a power of 2 >>
- #endif
-
- static DEFBUF *symtab[SBSIZE]; /* Symbol table queue headers */
-
- DEFBUF *
- lookid(c)
- int c; /* First character of token */
- /*
- * Look for the next token in the symbol table. Returns token in "token".
- * If found, returns the table pointer; Else returns NULL.
- */
- {
- register int nhash;
- register DEFBUF *dp;
- register char *np;
- int temp;
- int isrecurse; /* For #define foo foo */
-
- np = token;
- nhash = 0;
- if ((isrecurse = (c == DEF_MAGIC))) /* If recursive macro */
- c = get(); /* hack, skip DEF_MAGIC */
- do {
- if (np < &token[IDMAX]) { /* token dim is IDMAX+1 */
- *np++ = c; /* Store token byte */
- nhash += c; /* Update hash value */
- }
- c = get(); /* And get another byte */
- } while (type[c] == LET || type[c] == DIG);
- unget(); /* Rescan terminator */
- *np = EOS; /* Terminate token */
- if (isrecurse) /* Recursive definition */
- return (NULL); /* undefined just now */
- nhash += (np - token); /* Fix hash value */
- dp = symtab[nhash & SBMASK]; /* Starting bucket */
- while (dp != (DEFBUF *) NULL) { /* Search symbol table */
- if (dp->hash == nhash /* Fast precheck */
- && (temp = strcmp(dp->name, token)) >= 0)
- break;
- dp = dp->link; /* Nope, try next one */
- }
- return ((temp == 0) ? dp : NULL);
- }
-
- DEFBUF *
- defendel(name, delete)
- char *name;
- int delete; /* TRUE to delete a symbol */
- /*
- * Enter this name in the lookup table (delete = FALSE)
- * or delete this name (delete = TRUE).
- * Returns a pointer to the define block (delete = FALSE)
- * Returns NULL if the symbol wasn't defined (delete = TRUE).
- */
- {
- register DEFBUF *dp;
- register DEFBUF **prevp;
- register char *np;
- int nhash;
- int temp;
- int size;
-
- for (nhash = 0, np = name; *np != EOS;)
- nhash += *np++;
- size = (np - name);
- nhash += size;
- prevp = &symtab[nhash & SBMASK];
- while ((dp = *prevp) != (DEFBUF *) NULL) {
- if (dp->hash == nhash
- && (temp = strcmp(dp->name, name)) >= 0) {
- if (temp > 0)
- dp = NULL; /* Not found */
- else {
- *prevp = dp->link; /* Found, unlink and */
- if (dp->repl != NULL) /* Free the replacement */
- free(dp->repl); /* if any, and then */
- free((char *) dp); /* Free the symbol */
- }
- break;
- }
- prevp = &dp->link;
- }
- if (!delete) {
- dp = (DEFBUF *) getmem(sizeof (DEFBUF) + size);
- dp->link = *prevp;
- *prevp = dp;
- dp->hash = nhash;
- dp->repl = NULL;
- dp->nargs = 0;
- strcpy(dp->name, name);
- }
- return (dp);
- }
-
- #if DEBUG
-
- dumpdef(why)
- char *why;
- {
- register DEFBUF *dp;
- register DEFBUF **syp;
-
- printf("CPP symbol table dump %s\n", why);
- for (syp = symtab; syp < &symtab[SBSIZE]; syp++) {
- if ((dp = *syp) != (DEFBUF *) NULL) {
- printf("symtab[%d]\n", (syp - symtab));
- do {
- dumpadef((char *) NULL, dp);
- } while ((dp = dp->link) != (DEFBUF *) NULL);
- }
- }
- }
-
- dumpadef(why, dp)
- char *why; /* Notation */
- register DEFBUF *dp;
- {
- register char *cp;
- register int c;
-
- printf(" \"%s\" [%d]", dp->name, dp->nargs);
- if (why != NULL)
- printf(" (%s)", why);
- if (dp->repl != NULL) {
- printf(" => ");
- for (cp = dp->repl; (c = *cp++ & 0xFF) != EOS;) {
- if (c >= MAC_PARM && c <= (MAC_PARM + PAR_MAC))
- printf("<%d>", c - MAC_PARM);
- else if (isprint(c) || c == '\n' || c == '\t')
- putchar(c);
- else if (c < ' ')
- printf("<^%c>", c + '@');
- else
- printf("<\\0%o>", c);
- }
- }
- else {
- printf(", no replacement.");
- }
- putchar('\n');
- }
- #endif
-
- /*
- * G E T
- */
-
- int
- get()
- /*
- * Return the next character from a macro or the current file.
- * Handle end of file from #include files.
- */
- {
- register int c;
- register FILEINFO *file;
- register int popped; /* Recursion fixup */
-
- popped = 0;
- get_from_file:
- if ((file = infile) == NULL)
- return (EOF_CHAR);
- newline:
- #if 0
- printf("get(%s), recursion %d, line %d, bptr = %d, buffer \"%s\"\n",
- file->filename, recursion, line,
- file->bptr - file->buffer, file->buffer);
- #endif
- /*
- * Read a character from the current input line or macro.
- * At EOS, either finish the current macro (freeing temp.
- * storage) or read another line from the current input file.
- * At EOF, exit the current file (#include) or, at EOF from
- * the cpp input file, return EOF_CHAR to finish processing.
- */
- if ((c = *file->bptr++ & 0xFF) == EOS) {
- /*
- * Nothing in current line or macro. Get next line (if
- * input from a file), or do end of file/macro processing.
- * In the latter case, jump back to restart from the top.
- */
- if (file->fp == NULL) { /* NULL if macro */
- popped++;
- recursion -= file->unrecur;
- if (recursion < 0)
- recursion = 0;
- infile = file->parent; /* Unwind file chain */
- }
- else { /* Else get from a file */
- if ((file->bptr = fgets(file->buffer, NBUFF, file->fp))
- != NULL) {
- #if DEBUG
- if (debug > 1) { /* Dump it to stdout */
- printf("\n#line %d (%s), %s",
- line, file->filename, file->buffer);
- }
- #endif
- goto newline; /* process the line */
- }
- else {
- fclose(file->fp); /* Close finished file */
- if ((infile = file->parent) != NULL) {
- /*
- * There is an "ungotten" newline in the current
- * infile buffer (set there by doinclude() in
- * cpp1.c). Thus, we know that the mainline code
- * is skipping over blank lines and will do a
- * #line at its convenience.
- */
- wrongline = TRUE; /* Need a #line now */
- }
- }
- }
- /*
- * Free up space used by the (finished) file or macro and
- * restart input from the parent file/macro, if any.
- */
- free(file->filename); /* Free name and */
- if (file->progname != NULL) /* if a #line was seen, */
- free(file->progname); /* free it, too. */
- free((char *) file); /* Free file space */
- if (infile == NULL) /* If at end of file */
- return (EOF_CHAR); /* Return end of file */
- line = infile->line; /* Reset line number */
- goto get_from_file; /* Get from the top. */
- }
- /*
- * Common processing for the new character.
- */
- if (c == DEF_MAGIC && file->fp != NULL) /* Don't allow delete */
- goto newline; /* from a file */
- if (file->parent != NULL) { /* Macro or #include */
- if (popped != 0)
- file->parent->unrecur += popped;
- else {
- recursion -= file->parent->unrecur;
- if (recursion < 0)
- recursion = 0;
- file->parent->unrecur = 0;
- }
- }
- if (c == '\n') /* Maintain current */
- ++line; /* line counter */
- if (instring) /* Strings just return */
- return (c); /* the character. */
- else if (c == '/') { /* Comment? */
- instring = TRUE; /* So get() won't loop */
- if ((c = get()) != '*') { /* Next byte '*'? */
- instring = FALSE; /* Nope, no comment */
- unget(); /* Push the char. back */
- return ('/'); /* Return the slash */
- }
- if (keepcomments) { /* If writing comments */
- putchar('/'); /* Write out the */
- putchar('*'); /* initializer */
- }
- for (;;) { /* Eat a comment */
- c = get();
- test: if (keepcomments && c != EOF_CHAR)
- cput(c);
- switch (c) {
- case EOF_CHAR:
- cerror("EOF in comment", NULLST);
- return (EOF_CHAR);
-
- case '/':
- if ((c = get()) != '*') /* Don't let comments */
- goto test; /* Nest. */
- cwarn("Nested comments", NULLST);
- /* Fall into * stuff */
- case '*':
- if ((c = get()) != '/') /* If comment doesn't */
- goto test; /* end, look at next */
- instring = FALSE; /* End of comment, */
- if (keepcomments) { /* Put out the comment */
- cput(c); /* terminator, too */
- }
- /*
- * A comment is syntactically "whitespace" --
- * however, there are certain strange sequences
- * such as
- * #define foo(x) (something)
- * foo|* comment *|(123)
- * these are '/' ^ ^
- * where just returning space (or COM_SEP) will cause
- * problems. This can be "fixed" by overwriting the
- * '/' in the input line buffer with ' ' (or COM_SEP)
- * but that may mess up an error message.
- * So, we peek ahead -- if the next character is
- * "whitespace" we just get another character, if not,
- * we modify the buffer. All in the name of purity.
- */
- if (*file->bptr == '\n'
- || type[*file->bptr & 0xFF] == SPA)
- goto newline;
- #if COMMENT_INVISIBLE
- /*
- * Return magic (old-fashioned) syntactic space.
- */
- return ((file->bptr[-1] = COM_SEP));
- #else
- return ((file->bptr[-1] = ' '));
- #endif
-
- case '\n': /* we'll need a #line */
- if (!keepcomments)
- wrongline = TRUE; /* later... */
- default: /* Anything else is */
- break; /* Just a character */
- } /* End switch */
- } /* End comment loop */
- } /* End if in comment */
- else if (!inmacro && c == '\\') { /* If backslash, peek */
- if ((c = get()) == '\n') { /* for a <nl>. If so, */
- wrongline = TRUE;
- goto newline;
- }
- else { /* Backslash anything */
- unget(); /* Get it later */
- return ('\\'); /* Return the backslash */
- }
- }
- else if (c == '\f' || c == VT) /* Form Feed, Vertical */
- c = ' '; /* Tab are whitespace */
- return (c); /* Just return the char */
- }
-
- unget()
- /*
- * Backup the pointer to reread the last character. Fatal error
- * (code bug) if we backup too far. unget() may be called,
- * without problems, at end of file. Only one character may
- * be ungotten. If you need to unget more, call ungetstring().
- */
- {
- register FILEINFO *file;
-
- if ((file = infile) == NULL)
- return; /* Unget after EOF */
- if (--file->bptr < file->buffer)
- cfatal("Too much pushback", NULLST);
- if (*file->bptr == '\n') /* Ungetting a newline? */
- --line; /* Unget the line number, too */
- }
-
- ungetstring(text)
- char *text;
- /*
- * Push a string back on the input stream. This is done by treating
- * the text as if it were a macro.
- */
- {
- register FILEINFO *file;
- extern FILEINFO *getfile();
-
- file = getfile(strlen(text) + 1, "");
- strcpy(file->buffer, text);
- }
-
- int
- cget()
- /*
- * Get one character, absorb "funny space" after comments or
- * token concatenation
- */
- {
- register int c;
-
- do {
- c = get();
- #if COMMENT_INVISIBLE
- } while (c == TOK_SEP || c == COM_SEP);
- #else
- } while (c == TOK_SEP);
- #endif
- return (c);
- }
-
- /*
- * Error messages and other hacks. The first byte of severity
- * is 'S' for string arguments and 'I' for int arguments. This
- * is needed for portability with machines that have int's that
- * are shorter than char *'s.
- */
-
- static
- domsg(severity, format, arg)
- char *severity; /* "Error", "Warning", "Fatal" */
- char *format; /* Format for the error message */
- char *arg; /* Something for the message */
- /*
- * Print filenames, macro names, and line numbers for error messages.
- */
- {
- register char *tp;
- register FILEINFO *file;
-
- fprintf(stderr, "%sline %d, %s: ", MSG_PREFIX, line, &severity[1]);
- if (*severity == 'S')
- fprintf(stderr, format, arg);
- else
- fprintf(stderr, format, (int) arg);
- putc('\n', stderr);
- if ((file = infile) == NULL)
- return; /* At end of file */
- if (file->fp != NULL) {
- tp = file->buffer; /* Print current file */
- fprintf(stderr, "%s", tp); /* name, making sure */
- if (tp[strlen(tp) - 1] != '\n') /* there's a newline */
- putc('\n', stderr);
- }
- while ((file = file->parent) != NULL) { /* Print #includes, too */
- if (file->fp == NULL)
- fprintf(stderr, "from macro %s\n", file->filename);
- else {
- tp = file->buffer;
- fprintf(stderr, "from file %s, line %d:\n%s",
- (file->progname != NULL)
- ? file->progname : file->filename,
- file->line, tp);
- if (tp[strlen(tp) - 1] != '\n')
- putc('\n', stderr);
- }
- }
- }
-
- cerror(format, sarg)
- char *format;
- char *sarg; /* Single string argument */
- /*
- * Print a normal error message, string argument.
- */
- {
- domsg("SError", format, sarg);
- errors++;
- }
-
- cierror(format, narg)
- char *format;
- int narg; /* Single numeric argument */
- /*
- * Print a normal error message, numeric argument.
- */
- {
- domsg("IError", format, (char *) narg);
- errors++;
- }
-
- cfatal(format, sarg)
- char *format;
- char *sarg; /* Single string argument */
- /*
- * A real disaster
- */
- {
- domsg("SFatal error", format, sarg);
- exit(IO_ERROR);
- }
-
- cwarn(format, sarg)
- char *format;
- char *sarg; /* Single string argument */
- /*
- * A non-fatal error, string argument.
- */
- {
- domsg("SWarning", format, sarg);
- }
-
- ciwarn(format, narg)
- char *format;
- int narg; /* Single numeric argument */
- /*
- * A non-fatal error, numeric argument.
- */
- {
- domsg("IWarning", format, (char *) narg);
- }
-
-
-
-