2000-05-28 13:40:48 +00:00
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/*
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* scanner.c
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*
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* Ullrich von Bassewitz, 07.06.1998
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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2000-08-23 06:45:55 +00:00
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/* common */
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#include "tgttrans.h"
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2000-05-28 13:40:48 +00:00
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2000-08-23 06:45:55 +00:00
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/* cc65 */
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2000-05-28 13:40:48 +00:00
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#include "datatype.h"
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#include "error.h"
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#include "function.h"
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#include "global.h"
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#include "ident.h"
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2000-06-14 21:01:37 +00:00
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#include "input.h"
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2000-05-28 13:40:48 +00:00
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#include "litpool.h"
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#include "preproc.h"
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#include "symtab.h"
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#include "util.h"
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#include "scanner.h"
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/*****************************************************************************/
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/* data */
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/*****************************************************************************/
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Token CurTok; /* The current token */
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Token NextTok; /* The next token */
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/* Token types */
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#define TT_C 0 /* ANSI C token */
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#define TT_EXT 1 /* cc65 extension */
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/* Token table */
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2000-06-21 21:02:44 +00:00
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static const struct Keyword {
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2000-05-28 13:40:48 +00:00
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char* Key; /* Keyword name */
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unsigned char Tok; /* The token */
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unsigned char Type; /* Token type */
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} Keywords [] = {
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2000-08-16 09:10:50 +00:00
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{ "__A__", TOK_A, TT_C },
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2000-06-12 18:31:40 +00:00
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{ "__AX__", TOK_AX, TT_C },
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{ "__EAX__", TOK_EAX, TT_C },
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2000-08-16 09:10:50 +00:00
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{ "__X__", TOK_X, TT_C },
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{ "__Y__", TOK_Y, TT_C },
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2000-06-12 18:31:40 +00:00
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{ "__asm__", TOK_ASM, TT_C },
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{ "__attribute__", TOK_ATTRIBUTE, TT_C },
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2000-08-14 22:18:26 +00:00
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{ "__far__", TOK_FAR, TT_C },
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2000-06-12 18:31:40 +00:00
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{ "__fastcall__", TOK_FASTCALL, TT_C },
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{ "asm", TOK_ASM, TT_EXT },
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{ "auto", TOK_AUTO, TT_C },
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{ "break", TOK_BREAK, TT_C },
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{ "case", TOK_CASE, TT_C },
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{ "char", TOK_CHAR, TT_C },
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{ "const", TOK_CONST, TT_C },
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{ "continue", TOK_CONTINUE, TT_C },
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{ "default", TOK_DEFAULT, TT_C },
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{ "do", TOK_DO, TT_C },
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{ "double", TOK_DOUBLE, TT_C },
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{ "else", TOK_ELSE, TT_C },
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{ "enum", TOK_ENUM, TT_C },
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{ "extern", TOK_EXTERN, TT_C },
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2000-08-14 22:18:26 +00:00
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{ "far", TOK_FAR, TT_EXT },
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2000-06-12 18:31:40 +00:00
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{ "fastcall", TOK_FASTCALL, TT_EXT },
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{ "float", TOK_FLOAT, TT_C },
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{ "for", TOK_FOR, TT_C },
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{ "goto", TOK_GOTO, TT_C },
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{ "if", TOK_IF, TT_C },
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{ "int", TOK_INT, TT_C },
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{ "long", TOK_LONG, TT_C },
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{ "register", TOK_REGISTER, TT_C },
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{ "return", TOK_RETURN, TT_C },
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{ "short", TOK_SHORT, TT_C },
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{ "signed", TOK_SIGNED, TT_C },
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{ "sizeof", TOK_SIZEOF, TT_C },
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{ "static", TOK_STATIC, TT_C },
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{ "struct", TOK_STRUCT, TT_C },
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{ "switch", TOK_SWITCH, TT_C },
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{ "typedef", TOK_TYPEDEF, TT_C },
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{ "union", TOK_UNION, TT_C },
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{ "unsigned", TOK_UNSIGNED, TT_C },
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{ "void", TOK_VOID, TT_C },
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{ "volatile", TOK_VOLATILE, TT_C },
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{ "while", TOK_WHILE, TT_C },
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2000-05-28 13:40:48 +00:00
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};
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#define KEY_COUNT (sizeof (Keywords) / sizeof (Keywords [0]))
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/* Stuff for determining the type of an integer constant */
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#define IT_INT 0x01
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#define IT_UINT 0x02
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#define IT_LONG 0x04
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#define IT_ULONG 0x08
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/*****************************************************************************/
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/* code */
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/*****************************************************************************/
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static int CmpKey (const void* Key, const void* Elem)
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/* Compare function for bsearch */
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{
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return strcmp ((const char*) Key, ((const struct Keyword*) Elem)->Key);
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}
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2000-06-21 21:02:44 +00:00
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static int FindKey (const char* Key)
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2000-05-28 13:40:48 +00:00
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/* Find a keyword and return the token. Return IDENT if the token is not a
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* keyword.
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*/
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{
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struct Keyword* K;
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K = bsearch (Key, Keywords, KEY_COUNT, sizeof (Keywords [0]), CmpKey);
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if (K && (K->Type != TT_EXT || ANSI == 0)) {
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return K->Tok;
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} else {
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2000-06-12 18:31:40 +00:00
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return TOK_IDENT;
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2000-05-28 13:40:48 +00:00
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}
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}
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2000-08-14 22:18:26 +00:00
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2000-06-21 21:02:44 +00:00
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static int SkipWhite (void)
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2000-05-28 13:40:48 +00:00
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/* Skip white space in the input stream, reading and preprocessing new lines
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* if necessary. Return 0 if end of file is reached, return 1 otherwise.
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*/
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{
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while (1) {
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2000-06-21 21:02:44 +00:00
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while (CurC == 0) {
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2000-06-14 08:18:19 +00:00
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if (NextLine () == 0) {
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2000-05-28 13:40:48 +00:00
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return 0;
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}
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2000-06-21 21:02:44 +00:00
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Preprocess ();
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2000-05-28 13:40:48 +00:00
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}
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2000-06-21 21:02:44 +00:00
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if (CurC == ' ' || CurC == '\r') {
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NextChar ();
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2000-05-28 13:40:48 +00:00
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} else {
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return 1;
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}
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}
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}
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2000-06-21 21:02:44 +00:00
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void SymName (char* s)
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2000-05-28 13:40:48 +00:00
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/* Get symbol from input stream */
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{
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unsigned k = 0;
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do {
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2000-06-21 21:02:44 +00:00
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if (k != MAX_IDENTLEN) {
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++k;
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*s++ = CurC;
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2000-05-28 13:40:48 +00:00
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}
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2000-06-21 21:02:44 +00:00
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NextChar ();
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} while (IsIdent (CurC) || isdigit (CurC));
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2000-05-28 13:40:48 +00:00
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*s = '\0';
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}
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2000-06-21 21:02:44 +00:00
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int IsSym (char *s)
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2000-05-28 13:40:48 +00:00
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/* Get symbol from input stream or return 0 if not a symbol. */
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{
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2000-06-21 21:02:44 +00:00
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if (IsIdent (CurC)) {
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SymName (s);
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2000-05-28 13:40:48 +00:00
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return 1;
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} else {
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return 0;
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}
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}
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2000-06-21 21:02:44 +00:00
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static void unknown (char C)
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2000-05-28 13:40:48 +00:00
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/* Error message for unknown character */
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{
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2000-06-21 21:02:44 +00:00
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Error (ERR_INVALID_CHAR, C);
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NextChar (); /* Skip */
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2000-05-28 13:40:48 +00:00
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}
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static unsigned hexval (int c)
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/* Convert a hex digit into a value */
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{
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if (!isxdigit (c)) {
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Error (ERR_ILLEGAL_HEX_DIGIT);
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}
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if (isdigit (c)) {
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return c - '0';
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} else {
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return toupper (c) - 'A' + 10;
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}
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}
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static void SetTok (int tok)
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/* set nxttok and bump line ptr */
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{
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nxttok = tok;
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2000-06-21 21:02:44 +00:00
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NextChar ();
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2000-05-28 13:40:48 +00:00
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}
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static int SignExtendChar (int C)
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/* Do correct sign extension of a character */
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{
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if (SignedChars && (C & 0x80) != 0) {
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return C | ~0xFF;
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} else {
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return C & 0xFF;
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}
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}
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2000-06-21 21:02:44 +00:00
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static int ParseChar (void)
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2000-05-28 13:40:48 +00:00
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/* Parse a character. Converts \n into EOL, etc. */
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{
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int i;
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2000-06-21 21:02:44 +00:00
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unsigned val;
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int C;
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2000-05-28 13:40:48 +00:00
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/* Check for escape chars */
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2000-06-21 21:02:44 +00:00
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if (CurC == '\\') {
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NextChar ();
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switch (CurC) {
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2000-05-28 13:40:48 +00:00
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case 'b':
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2000-06-21 21:02:44 +00:00
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C = '\b';
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2000-05-28 13:40:48 +00:00
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break;
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2000-06-21 21:02:44 +00:00
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case 'f':
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C = '\f';
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2000-05-28 13:40:48 +00:00
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break;
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case 'r':
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2000-06-21 21:02:44 +00:00
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C = '\r';
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2000-05-28 13:40:48 +00:00
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break;
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case 'n':
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2000-06-21 21:02:44 +00:00
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C = '\n';
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2000-05-28 13:40:48 +00:00
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break;
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case 't':
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2000-06-21 21:02:44 +00:00
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C = '\t';
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2000-05-28 13:40:48 +00:00
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break;
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case '\"':
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2000-06-21 21:02:44 +00:00
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C = '\"';
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2000-05-28 13:40:48 +00:00
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break;
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case '\'':
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2000-06-21 21:02:44 +00:00
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C = '\'';
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2000-05-28 13:40:48 +00:00
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break;
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case '\\':
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2000-06-21 21:02:44 +00:00
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C = '\\';
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2000-05-28 13:40:48 +00:00
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break;
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case 'x':
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case 'X':
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/* Hex character constant */
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2000-06-21 21:02:44 +00:00
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NextChar ();
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val = hexval (CurC) << 4;
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NextChar ();
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C = val | hexval (CurC); /* Do not translate */
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2000-05-28 13:40:48 +00:00
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break;
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case '0':
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case '1':
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/* Octal constant */
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i = 0;
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2000-06-21 21:02:44 +00:00
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C = CurC - '0';
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while (NextC >= '0' && NextC <= '7' && i++ < 4) {
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NextChar ();
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C = (C << 3) | (CurC - '0');
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}
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break;
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default:
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Error (ERR_ILLEGAL_CHARCONST);
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C = ' ';
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2000-05-28 13:40:48 +00:00
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break;
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2000-06-21 21:02:44 +00:00
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}
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} else {
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C = CurC;
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2000-05-28 13:40:48 +00:00
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}
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2000-06-21 21:02:44 +00:00
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/* Skip the character read */
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NextChar ();
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2000-05-28 13:40:48 +00:00
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/* Do correct sign extension */
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2000-06-21 21:02:44 +00:00
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return SignExtendChar (C);
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2000-05-28 13:40:48 +00:00
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}
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static void CharConst (void)
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/* Parse a character constant. */
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{
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2000-06-21 21:02:44 +00:00
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int C;
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2000-05-28 13:40:48 +00:00
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/* Skip the quote */
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2000-06-21 21:02:44 +00:00
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NextChar ();
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2000-05-28 13:40:48 +00:00
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/* Get character */
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2000-06-21 21:02:44 +00:00
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C = ParseChar ();
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2000-05-28 13:40:48 +00:00
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/* Check for closing quote */
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2000-06-21 21:02:44 +00:00
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if (CurC != '\'') {
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2000-05-28 13:40:48 +00:00
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Error (ERR_QUOTE_EXPECTED);
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2000-06-21 21:02:44 +00:00
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} else {
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/* Skip the quote */
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NextChar ();
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2000-05-28 13:40:48 +00:00
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}
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/* Setup values and attributes */
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2000-06-12 18:31:40 +00:00
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nxttok = TOK_CCONST;
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2000-08-23 06:45:55 +00:00
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/* Translate into target charset */
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nxtval = SignExtendChar (TgtTranslateChar (C));
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/* Character constants have type int */
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nxttype = type_int;
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2000-05-28 13:40:48 +00:00
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}
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static void StringConst (void)
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/* Parse a quoted string */
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{
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nxtval = GetLiteralOffs ();
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2000-06-12 18:31:40 +00:00
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nxttok = TOK_SCONST;
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2000-05-28 13:40:48 +00:00
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|
|
|
/* Be sure to concatenate strings */
|
2000-06-21 21:02:44 +00:00
|
|
|
while (CurC == '\"') {
|
2000-05-28 13:40:48 +00:00
|
|
|
|
|
|
|
/* Skip the quote char */
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
2000-05-28 13:40:48 +00:00
|
|
|
|
2000-06-21 21:02:44 +00:00
|
|
|
while (CurC != '\"') {
|
|
|
|
if (CurC == '\0') {
|
2000-05-28 13:40:48 +00:00
|
|
|
Error (ERR_UNEXPECTED_NEWLINE);
|
|
|
|
break;
|
|
|
|
}
|
2000-06-21 21:02:44 +00:00
|
|
|
AddLiteralChar (ParseChar ());
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Skip closing quote char if there was one */
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
2000-05-28 13:40:48 +00:00
|
|
|
|
|
|
|
/* Skip white space, read new input */
|
2000-06-21 21:02:44 +00:00
|
|
|
SkipWhite ();
|
2000-05-28 13:40:48 +00:00
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Terminate the string */
|
|
|
|
AddLiteralChar ('\0');
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
2000-06-12 18:31:40 +00:00
|
|
|
void NextToken (void)
|
2000-05-28 13:40:48 +00:00
|
|
|
/* Get next token from input stream */
|
|
|
|
{
|
|
|
|
ident token;
|
|
|
|
|
|
|
|
/* Current token is the lookahead token */
|
|
|
|
CurTok = NextTok;
|
|
|
|
|
|
|
|
/* Remember the starting position of the next token */
|
2000-06-14 21:01:37 +00:00
|
|
|
NextTok.Pos = GetCurrentLine();
|
2000-05-28 13:40:48 +00:00
|
|
|
|
|
|
|
/* Skip spaces and read the next line if needed */
|
2000-06-21 21:02:44 +00:00
|
|
|
if (SkipWhite () == 0) {
|
2000-05-28 13:40:48 +00:00
|
|
|
/* End of file reached */
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_CEOF;
|
2000-05-28 13:40:48 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Determine the next token from the lookahead */
|
2000-06-21 21:02:44 +00:00
|
|
|
if (isdigit (CurC)) {
|
2000-05-28 13:40:48 +00:00
|
|
|
|
|
|
|
/* A number */
|
|
|
|
int HaveSuffix; /* True if we have a type suffix */
|
|
|
|
unsigned types; /* Possible types */
|
|
|
|
unsigned base;
|
|
|
|
unsigned long k; /* Value */
|
|
|
|
|
|
|
|
k = 0;
|
|
|
|
base = 10;
|
|
|
|
types = IT_INT | IT_LONG | IT_ULONG;
|
|
|
|
|
2000-06-21 21:02:44 +00:00
|
|
|
if (CurC == '0') {
|
2000-05-28 13:40:48 +00:00
|
|
|
/* Octal or hex constants may also be of type unsigned int */
|
|
|
|
types = IT_INT | IT_UINT | IT_LONG | IT_ULONG;
|
|
|
|
/* gobble 0 and examin next char */
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (toupper (CurC) == 'X') {
|
2000-05-28 13:40:48 +00:00
|
|
|
base = 16;
|
|
|
|
nxttype = type_uint;
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar (); /* gobble "x" */
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
|
|
|
base = 8;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
while (1) {
|
2000-06-21 21:02:44 +00:00
|
|
|
if (isdigit (CurC)) {
|
|
|
|
k = k * base + (CurC - '0');
|
|
|
|
} else if (base == 16 && isxdigit (CurC)) {
|
|
|
|
k = (k << 4) + hexval (CurC);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
|
|
|
break; /* not digit */
|
|
|
|
}
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar (); /* gobble char */
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Check for a suffix */
|
|
|
|
HaveSuffix = 1;
|
2000-06-21 21:02:44 +00:00
|
|
|
if (CurC == 'u' || CurC == 'U') {
|
2000-05-28 13:40:48 +00:00
|
|
|
/* Unsigned type */
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (toupper (CurC) != 'L') {
|
2000-05-28 13:40:48 +00:00
|
|
|
types = IT_UINT | IT_ULONG;
|
|
|
|
} else {
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
2000-05-28 13:40:48 +00:00
|
|
|
types = IT_ULONG;
|
|
|
|
}
|
2000-06-21 21:02:44 +00:00
|
|
|
} else if (CurC == 'l' || CurC == 'L') {
|
2000-05-28 13:40:48 +00:00
|
|
|
/* Long type */
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (toupper (CurC) != 'U') {
|
2000-05-28 13:40:48 +00:00
|
|
|
types = IT_LONG | IT_ULONG;
|
|
|
|
} else {
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
2000-05-28 13:40:48 +00:00
|
|
|
types = IT_ULONG;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
HaveSuffix = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check the range to determine the type */
|
|
|
|
if (k > 0x7FFF) {
|
|
|
|
/* Out of range for int */
|
|
|
|
types &= ~IT_INT;
|
|
|
|
/* If the value is in the range 0x8000..0xFFFF, unsigned int is not
|
|
|
|
* allowed, and we don't have a type specifying suffix, emit a
|
|
|
|
* warning.
|
|
|
|
*/
|
|
|
|
if (k <= 0xFFFF && (types & IT_UINT) == 0 && !HaveSuffix) {
|
|
|
|
Warning (WARN_CONSTANT_IS_LONG);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (k > 0xFFFF) {
|
|
|
|
/* Out of range for unsigned int */
|
|
|
|
types &= ~IT_UINT;
|
|
|
|
}
|
|
|
|
if (k > 0x7FFFFFFF) {
|
|
|
|
/* Out of range for long int */
|
|
|
|
types &= ~IT_LONG;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now set the type string to the smallest type in types */
|
|
|
|
if (types & IT_INT) {
|
|
|
|
nxttype = type_int;
|
|
|
|
} else if (types & IT_UINT) {
|
|
|
|
nxttype = type_uint;
|
|
|
|
} else if (types & IT_LONG) {
|
|
|
|
nxttype = type_long;
|
|
|
|
} else {
|
|
|
|
nxttype = type_ulong;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set the value and the token */
|
|
|
|
nxtval = k;
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_ICONST;
|
2000-05-28 13:40:48 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2000-06-21 21:02:44 +00:00
|
|
|
if (IsSym (token)) {
|
2000-05-28 13:40:48 +00:00
|
|
|
|
|
|
|
/* Check for a keyword */
|
2000-06-12 18:31:40 +00:00
|
|
|
if ((nxttok = FindKey (token)) != TOK_IDENT) {
|
2000-05-28 13:40:48 +00:00
|
|
|
/* Reserved word found */
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
/* No reserved word, check for special symbols */
|
|
|
|
if (token [0] == '_') {
|
|
|
|
/* Special symbols */
|
|
|
|
if (strcmp (token, "__FILE__") == 0) {
|
2000-06-14 21:01:37 +00:00
|
|
|
nxtval = AddLiteral (GetCurrentFile());
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_SCONST;
|
2000-05-28 13:40:48 +00:00
|
|
|
return;
|
|
|
|
} else if (strcmp (token, "__LINE__") == 0) {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_ICONST;
|
2000-06-14 21:01:37 +00:00
|
|
|
nxtval = GetCurrentLine();
|
2000-05-28 13:40:48 +00:00
|
|
|
nxttype = type_int;
|
|
|
|
return;
|
|
|
|
} else if (strcmp (token, "__fixargs__") == 0) {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_ICONST;
|
2000-05-28 13:40:48 +00:00
|
|
|
nxtval = GetParamSize (CurrentFunc);
|
|
|
|
nxttype = type_uint;
|
|
|
|
return;
|
|
|
|
} else if (strcmp (token, "__func__") == 0) {
|
|
|
|
/* __func__ is only defined in functions */
|
|
|
|
if (CurrentFunc) {
|
|
|
|
nxtval = AddLiteral (GetFuncName (CurrentFunc));
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_SCONST;
|
2000-05-28 13:40:48 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* No reserved word but identifier */
|
|
|
|
strcpy (NextTok.Ident, token);
|
2000-06-12 18:31:40 +00:00
|
|
|
NextTok.Tok = TOK_IDENT;
|
2000-05-28 13:40:48 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Monstrous switch statement ahead... */
|
2000-06-21 21:02:44 +00:00
|
|
|
switch (CurC) {
|
2000-05-28 13:40:48 +00:00
|
|
|
|
|
|
|
case '!':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (CurC == '=') {
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_NE);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_BOOL_NOT;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '\"':
|
|
|
|
StringConst ();
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '%':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (CurC == '=') {
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_MOD_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_MOD;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '&':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
switch (CurC) {
|
2000-05-28 13:40:48 +00:00
|
|
|
case '&':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_BOOL_AND);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
case '=':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_AND_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
default:
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_AND;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '\'':
|
|
|
|
CharConst ();
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '(':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_LPAREN);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case ')':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_RPAREN);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case '*':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (CurC == '=') {
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_MUL_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_STAR;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '+':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
switch (CurC) {
|
2000-05-28 13:40:48 +00:00
|
|
|
case '+':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_INC);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
case '=':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_PLUS_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
default:
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_PLUS;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ',':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_COMMA);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case '-':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
switch (CurC) {
|
2000-05-28 13:40:48 +00:00
|
|
|
case '-':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_DEC);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
case '=':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_MINUS_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
case '>':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_PTR_REF);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
default:
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_MINUS;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '.':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (CurC == '.') {
|
|
|
|
NextChar ();
|
|
|
|
if (CurC == '.') {
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_ELLIPSIS);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
2000-06-21 21:02:44 +00:00
|
|
|
unknown (CurC);
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
} else {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_DOT;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '/':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (CurC == '=') {
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_DIV_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_DIV;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ':':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_COLON);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case ';':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_SEMI);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case '<':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
switch (CurC) {
|
2000-05-28 13:40:48 +00:00
|
|
|
case '=':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_LE);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
case '<':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (CurC == '=') {
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_SHL_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_SHL;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_LT;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '=':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (CurC == '=') {
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_EQ);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_ASSIGN;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '>':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
switch (CurC) {
|
2000-05-28 13:40:48 +00:00
|
|
|
case '=':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_GE);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
case '>':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (CurC == '=') {
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_SHR_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_SHR;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_GT;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '?':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_QUEST);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case '[':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_LBRACK);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case ']':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_RBRACK);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case '^':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
if (CurC == '=') {
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_XOR_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_XOR;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '{':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_LCURLY);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case '|':
|
2000-06-21 21:02:44 +00:00
|
|
|
NextChar ();
|
|
|
|
switch (CurC) {
|
2000-05-28 13:40:48 +00:00
|
|
|
case '|':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_BOOL_OR);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
case '=':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_OR_ASSIGN);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
default:
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_OR;
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '}':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_RCURLY);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case '~':
|
2000-06-12 18:31:40 +00:00
|
|
|
SetTok (TOK_COMP);
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case '#':
|
2000-06-21 21:02:44 +00:00
|
|
|
/* Skip it and following whitespace */
|
|
|
|
do {
|
|
|
|
NextChar ();
|
|
|
|
} while (CurC == ' ');
|
|
|
|
if (!IsSym (token) || strcmp (token, "pragma") != 0) {
|
2000-05-28 13:40:48 +00:00
|
|
|
/* OOPS - should not happen */
|
|
|
|
Error (ERR_CPP_DIRECTIVE_EXPECTED);
|
|
|
|
}
|
2000-06-12 18:31:40 +00:00
|
|
|
nxttok = TOK_PRAGMA;
|
2000-05-28 13:40:48 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
2000-06-21 21:02:44 +00:00
|
|
|
unknown (CurC);
|
2000-05-28 13:40:48 +00:00
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
2000-06-12 18:31:40 +00:00
|
|
|
void Consume (token_t Token, unsigned ErrNum)
|
2000-05-28 13:40:48 +00:00
|
|
|
/* Eat token if it is the next in the input stream, otherwise print an error
|
|
|
|
* message.
|
|
|
|
*/
|
|
|
|
{
|
|
|
|
if (curtok == Token) {
|
2000-06-12 18:31:40 +00:00
|
|
|
NextToken ();
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
|
|
|
Error (ErrNum);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ConsumeColon (void)
|
|
|
|
/* Check for a colon and skip it. */
|
|
|
|
{
|
2000-06-12 18:31:40 +00:00
|
|
|
Consume (TOK_COLON, ERR_COLON_EXPECTED);
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ConsumeSemi (void)
|
|
|
|
/* Check for a semicolon and skip it. */
|
|
|
|
{
|
|
|
|
/* Try do be smart about typos... */
|
2000-06-12 18:31:40 +00:00
|
|
|
if (curtok == TOK_SEMI) {
|
|
|
|
NextToken ();
|
2000-05-28 13:40:48 +00:00
|
|
|
} else {
|
|
|
|
Error (ERR_SEMICOLON_EXPECTED);
|
2000-06-12 18:31:40 +00:00
|
|
|
if (curtok == TOK_COLON || curtok == TOK_COMMA) {
|
|
|
|
NextToken ();
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ConsumeLParen (void)
|
|
|
|
/* Check for a left parenthesis and skip it */
|
|
|
|
{
|
2000-06-12 18:31:40 +00:00
|
|
|
Consume (TOK_LPAREN, ERR_LPAREN_EXPECTED);
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ConsumeRParen (void)
|
|
|
|
/* Check for a right parenthesis and skip it */
|
|
|
|
{
|
2000-06-12 18:31:40 +00:00
|
|
|
Consume (TOK_RPAREN, ERR_RPAREN_EXPECTED);
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ConsumeLBrack (void)
|
|
|
|
/* Check for a left bracket and skip it */
|
|
|
|
{
|
2000-06-12 18:31:40 +00:00
|
|
|
Consume (TOK_LBRACK, ERR_LBRACK_EXPECTED);
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ConsumeRBrack (void)
|
|
|
|
/* Check for a right bracket and skip it */
|
|
|
|
{
|
2000-06-12 18:31:40 +00:00
|
|
|
Consume (TOK_RBRACK, ERR_RBRACK_EXPECTED);
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ConsumeLCurly (void)
|
|
|
|
/* Check for a left curly brace and skip it */
|
|
|
|
{
|
2000-06-12 18:31:40 +00:00
|
|
|
Consume (TOK_LCURLY, ERR_LCURLY_EXPECTED);
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void ConsumeRCurly (void)
|
|
|
|
/* Check for a right curly brace and skip it */
|
|
|
|
{
|
2000-06-12 18:31:40 +00:00
|
|
|
Consume (TOK_RCURLY, ERR_RCURLY_EXPECTED);
|
2000-05-28 13:40:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|