0
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/*********************************************************************
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* RPC for the Windows NT Operating System
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* 1993 by Martin F. Gergeleit
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* Users may use, copy or modify Sun RPC for the Windows NT Operating
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* System according to the Sun copyright below.
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*
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* RPC for the Windows NT Operating System COMES WITH ABSOLUTELY NO
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* WARRANTY, NOR WILL I BE LIABLE FOR ANY DAMAGES INCURRED FROM THE
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* USE OF. USE ENTIRELY AT YOUR OWN RISK!!!
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*********************************************************************/
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/* @(#)rpc_scan.c 2.1 88/08/01 4.0 RPCSRC */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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//#ifndef lint
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//static char sccsid[] = "@(#)rpc_scan.c 1.6 87/06/24 (C) 1987 SMI";
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//#endif
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/*
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* rpc_scan.c, Scanner for the RPC protocol compiler
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* Copyright (C) 1987, Sun Microsystems, Inc.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include "rpc_scan.h"
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#include "rpc_util.h"
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#define startcomment(where) (where[0] == '/' && where[1] == '*')
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#define endcomment(where) (where[-1] == '*' && where[0] == '/')
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static int pushed = 0; /* is a token pushed */
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static token lasttok; /* last token, if pushed */
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static void
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unget_token(tokp)
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token *tokp;
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{
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lasttok = *tokp;
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pushed = 1;
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}
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static void
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findstrconst(str, val)
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char **str;
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char **val;
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{
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char *p;
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int size;
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p = *str;
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do {
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*p++;
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} while (*p && *p != '"');
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86 |
if (*p == 0) {
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error("unterminated string constant");
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}
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p++;
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size = p - *str;
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*val = alloc(size + 1);
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(void) strncpy(*val, *str, size);
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(*val)[size] = 0;
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*str = p;
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}
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static void
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findconst(str, val)
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char **str;
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char **val;
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{
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char *p;
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int size;
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p = *str;
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if (*p == '0' && *(p + 1) == 'x') {
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p++;
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do {
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p++;
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} while (isxdigit(*p));
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} else {
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do {
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p++;
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} while (isdigit(*p));
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}
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size = p - *str;
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*val = alloc(size + 1);
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(void) strncpy(*val, *str, size);
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(*val)[size] = 0;
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*str = p;
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}
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static token symbols[] = {
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{TOK_CONST, "const"},
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{TOK_UNION, "union"},
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{TOK_SWITCH, "switch"},
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{TOK_CASE, "case"},
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{TOK_DEFAULT, "default"},
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{TOK_STRUCT, "struct"},
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{TOK_TYPEDEF, "typedef"},
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{TOK_ENUM, "enum"},
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{TOK_OPAQUE, "opaque"},
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{TOK_BOOL, "bool"},
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{TOK_VOID, "void"},
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{TOK_CHAR, "char"},
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{TOK_INT, "int"},
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{TOK_UNSIGNED, "unsigned"},
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{TOK_SHORT, "short"},
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{TOK_LONG, "long"},
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{TOK_FLOAT, "float"},
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{TOK_DOUBLE, "double"},
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{TOK_STRING, "string"},
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{TOK_PROGRAM, "program"},
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{TOK_VERSION, "version"},
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{TOK_EOF, "??????"},
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};
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static void
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findkind(mark, tokp)
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char **mark;
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token *tokp;
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{
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int len;
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token *s;
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char *str;
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str = *mark;
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for (s = symbols; s->kind != TOK_EOF; s++) {
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len = strlen(s->str);
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164 |
if (strncmp(str, s->str, len) == 0) {
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if (!isalnum(str[len]) && str[len] != '_') {
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tokp->kind = s->kind;
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tokp->str = s->str;
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*mark = str + len;
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return;
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170 |
}
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171 |
}
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172 |
}
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tokp->kind = TOK_IDENT;
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for (len = 0; isalnum(str[len]) || str[len] == '_'; len++);
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175 |
tokp->str = alloc(len + 1);
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(void) strncpy(tokp->str, str, len);
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177 |
tokp->str[len] = 0;
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*mark = str + len;
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179 |
}
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180 |
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static int
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cppline(line)
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183 |
char *line;
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184 |
{
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185 |
return (line == curline && *line == '#');
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186 |
}
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187 |
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static int
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189 |
directive(line)
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190 |
char *line;
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191 |
{
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192 |
return (line == curline && *line == '%');
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193 |
}
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194 |
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195 |
static void
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printdirective(line)
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197 |
char *line;
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198 |
{
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199 |
f_print(fout, "%s", line + 1);
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200 |
}
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201 |
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202 |
static void
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docppline(line, lineno, fname)
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char *line;
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int *lineno;
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char **fname;
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207 |
{
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208 |
char *file;
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209 |
int num;
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210 |
char *p;
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211 |
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212 |
line++;
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213 |
while (isspace(*line)) {
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214 |
line++;
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215 |
}
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216 |
num = atoi(line);
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217 |
while (isdigit(*line)) {
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218 |
line++;
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219 |
}
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220 |
while (isspace(*line)) {
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221 |
line++;
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222 |
}
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223 |
if (*line != '"') {
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224 |
error("preprocessor error");
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225 |
}
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226 |
line++;
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227 |
p = file = alloc(strlen(line) + 1);
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228 |
while (*line && *line != '"') {
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229 |
*p++ = *line++;
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230 |
}
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231 |
if (*line == 0) {
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232 |
error("preprocessor error");
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233 |
}
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234 |
*p = 0;
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235 |
if (*file == 0) {
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*fname = NULL;
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237 |
} else {
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238 |
*fname = file;
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239 |
}
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240 |
*lineno = num - 1;
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}
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242 |
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243 |
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/*
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* scan expecting 1 given token
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*/
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void
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scan(expect, tokp)
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tok_kind expect;
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token *tokp;
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{
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get_token(tokp);
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if (tokp->kind != expect) {
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expected1(expect);
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255 |
}
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256 |
}
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257 |
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258 |
/*
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259 |
* scan expecting 2 given tokens
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260 |
*/
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261 |
void
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262 |
scan2(expect1, expect2, tokp)
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263 |
tok_kind expect1;
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264 |
tok_kind expect2;
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265 |
token *tokp;
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266 |
{
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267 |
get_token(tokp);
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268 |
if (tokp->kind != expect1 && tokp->kind != expect2) {
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269 |
expected2(expect1, expect2);
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270 |
}
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271 |
}
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272 |
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273 |
/*
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274 |
* scan expecting 3 given token
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275 |
*/
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276 |
void
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277 |
scan3(expect1, expect2, expect3, tokp)
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278 |
tok_kind expect1;
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279 |
tok_kind expect2;
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280 |
tok_kind expect3;
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|
281 |
token *tokp;
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|
282 |
{
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|
283 |
get_token(tokp);
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|
284 |
if (tokp->kind != expect1 && tokp->kind != expect2
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285 |
&& tokp->kind != expect3) {
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286 |
expected3(expect1, expect2, expect3);
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287 |
}
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|
288 |
}
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|
289 |
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290 |
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291 |
/*
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292 |
* scan expecting a constant, possibly symbolic
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293 |
*/
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294 |
void
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295 |
scan_num(tokp)
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296 |
token *tokp;
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297 |
{
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|
298 |
get_token(tokp);
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|
299 |
switch (tokp->kind) {
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|
300 |
case TOK_IDENT:
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301 |
break;
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302 |
default:
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303 |
error("constant or identifier expected");
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304 |
}
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305 |
}
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306 |
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307 |
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308 |
/*
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|
309 |
* Peek at the next token
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|
310 |
*/
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311 |
void
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312 |
peek(tokp)
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313 |
token *tokp;
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|
314 |
{
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|
315 |
get_token(tokp);
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|
316 |
unget_token(tokp);
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|
317 |
}
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|
318 |
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319 |
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|
320 |
/*
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|
321 |
* Peek at the next token and scan it if it matches what you expect
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|
322 |
*/
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323 |
int
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324 |
peekscan(expect, tokp)
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|
325 |
tok_kind expect;
|
|
326 |
token *tokp;
|
|
327 |
{
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|
328 |
peek(tokp);
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329 |
if (tokp->kind == expect) {
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|
330 |
get_token(tokp);
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|
331 |
return (1);
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|
332 |
}
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|
333 |
return (0);
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|
334 |
}
|
|
335 |
|
|
336 |
|
|
337 |
|
|
338 |
/*
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|
339 |
* Get the next token, printing out any directive that are encountered.
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|
340 |
*/
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|
341 |
void
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|
342 |
get_token(tokp)
|
|
343 |
token *tokp;
|
|
344 |
{
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|
345 |
int commenting;
|
|
346 |
|
|
347 |
if (pushed) {
|
|
348 |
pushed = 0;
|
|
349 |
*tokp = lasttok;
|
|
350 |
return;
|
|
351 |
}
|
|
352 |
|
|
353 |
commenting = 0;
|
|
354 |
for (;;) {
|
|
355 |
if (*where == 0) {
|
|
356 |
for (;;) {
|
|
357 |
if (!fgets(curline, MAXLINESIZE, fin)) {
|
|
358 |
tokp->kind = TOK_EOF;
|
|
359 |
*where = 0;
|
|
360 |
return;
|
|
361 |
}
|
|
362 |
linenum++;
|
|
363 |
if (commenting) {
|
|
364 |
break;
|
|
365 |
} else if (cppline(curline)) {
|
|
366 |
docppline(curline, &linenum,
|
|
367 |
&infilename);
|
|
368 |
} else if (directive(curline)) {
|
|
369 |
printdirective(curline);
|
|
370 |
} else {
|
|
371 |
break;
|
|
372 |
}
|
|
373 |
}
|
|
374 |
where = curline;
|
|
375 |
} else if (isspace(*where)) {
|
|
376 |
while (isspace(*where)) {
|
|
377 |
where++; /* eat */
|
|
378 |
}
|
|
379 |
} else if (commenting) {
|
|
380 |
where++;
|
|
381 |
if (endcomment(where)) {
|
|
382 |
where++;
|
|
383 |
commenting--;
|
|
384 |
}
|
|
385 |
} else if (startcomment(where)) {
|
|
386 |
where += 2;
|
|
387 |
commenting++;
|
|
388 |
} else {
|
|
389 |
break;
|
|
390 |
}
|
|
391 |
}
|
|
392 |
|
|
393 |
|
|
394 |
/*
|
|
395 |
* 'where' is not whitespace, comment or directive Must be a token!
|
|
396 |
*/
|
|
397 |
switch (*where) {
|
|
398 |
case ':':
|
|
399 |
tokp->kind = TOK_COLON;
|
|
400 |
where++;
|
|
401 |
break;
|
|
402 |
case ';':
|
|
403 |
tokp->kind = TOK_SEMICOLON;
|
|
404 |
where++;
|
|
405 |
break;
|
|
406 |
case ',':
|
|
407 |
tokp->kind = TOK_COMMA;
|
|
408 |
where++;
|
|
409 |
break;
|
|
410 |
case '=':
|
|
411 |
tokp->kind = TOK_EQUAL;
|
|
412 |
where++;
|
|
413 |
break;
|
|
414 |
case '*':
|
|
415 |
tokp->kind = TOK_STAR;
|
|
416 |
where++;
|
|
417 |
break;
|
|
418 |
case '[':
|
|
419 |
tokp->kind = TOK_LBRACKET;
|
|
420 |
where++;
|
|
421 |
break;
|
|
422 |
case ']':
|
|
423 |
tokp->kind = TOK_RBRACKET;
|
|
424 |
where++;
|
|
425 |
break;
|
|
426 |
case '{':
|
|
427 |
tokp->kind = TOK_LBRACE;
|
|
428 |
where++;
|
|
429 |
break;
|
|
430 |
case '}':
|
|
431 |
tokp->kind = TOK_RBRACE;
|
|
432 |
where++;
|
|
433 |
break;
|
|
434 |
case '(':
|
|
435 |
tokp->kind = TOK_LPAREN;
|
|
436 |
where++;
|
|
437 |
break;
|
|
438 |
case ')':
|
|
439 |
tokp->kind = TOK_RPAREN;
|
|
440 |
where++;
|
|
441 |
break;
|
|
442 |
case '<':
|
|
443 |
tokp->kind = TOK_LANGLE;
|
|
444 |
where++;
|
|
445 |
break;
|
|
446 |
case '>':
|
|
447 |
tokp->kind = TOK_RANGLE;
|
|
448 |
where++;
|
|
449 |
break;
|
|
450 |
|
|
451 |
case '"':
|
|
452 |
tokp->kind = TOK_STRCONST;
|
|
453 |
findstrconst(&where, &tokp->str);
|
|
454 |
break;
|
|
455 |
|
|
456 |
case '-':
|
|
457 |
case '0':
|
|
458 |
case '1':
|
|
459 |
case '2':
|
|
460 |
case '3':
|
|
461 |
case '4':
|
|
462 |
case '5':
|
|
463 |
case '6':
|
|
464 |
case '7':
|
|
465 |
case '8':
|
|
466 |
case '9':
|
|
467 |
tokp->kind = TOK_IDENT;
|
|
468 |
findconst(&where, &tokp->str);
|
|
469 |
break;
|
|
470 |
|
|
471 |
|
|
472 |
default:
|
|
473 |
|
|
474 |
if (!(isalpha(*where) || *where == '_')) {
|
|
475 |
char buf[100];
|
|
476 |
char *p;
|
|
477 |
|
|
478 |
s_print(buf, "illegal character in file: ");
|
|
479 |
p = buf + strlen(buf);
|
|
480 |
|
|
481 |
if (isprint(*where)) {
|
|
482 |
s_print(p, "%c", *where);
|
|
483 |
} else {
|
|
484 |
s_print(p, "%d", *where);
|
|
485 |
}
|
|
486 |
error(buf);
|
|
487 |
}
|
|
488 |
findkind(&where, tokp);
|
|
489 |
break;
|
|
490 |
}
|
|
491 |
}
|