11 void lexerror(lex_file *lex, const char *fmt, ...)
17 con_vprintmsg(LVL_ERROR, lex->name, lex->sline, "parse error", fmt, ap);
19 con_vprintmsg(LVL_ERROR, "", 0, "parse error", fmt, ap);
23 bool lexwarn(lex_file *lex, int warntype, const char *fmt, ...)
26 int lvl = LVL_WARNING;
28 if (!OPTS_WARN(warntype))
35 con_vprintmsg(lvl, lex->name, lex->sline, "warning", fmt, ap);
45 token *tok = (token*)mem_a(sizeof(token));
48 memset(tok, 0, sizeof(*tok));
52 void token_delete(token *self)
54 if (self->next && self->next->prev == self)
55 self->next->prev = self->prev;
56 if (self->prev && self->prev->next == self)
57 self->prev->next = self->next;
58 MEM_VECTOR_CLEAR(self, value);
62 token* token_copy(const token *cp)
64 token* self = token_new();
68 self->value_alloc = cp->value_count + 1;
69 self->value_count = cp->value_count;
70 self->value = (char*)mem_a(self->value_alloc);
75 memcpy(self->value, cp->value, cp->value_count);
76 self->value[self->value_alloc-1] = 0;
80 self->ttype = cp->ttype;
81 memcpy(&self->constval, &cp->constval, sizeof(self->constval));
85 void token_delete_all(token *t)
96 token* token_copy_all(const token *cp)
101 out = cur = token_copy(cp);
107 cur->next = token_copy(cp);
109 token_delete_all(out);
112 cur->next->prev = cur;
119 static void lex_token_new(lex_file *lex)
123 token_delete(lex->tok);
124 lex->tok = token_new();
127 vec_shrinkto(lex->tok.value, 0);
128 lex->tok.constval.t = 0;
129 lex->tok.ctx.line = lex->sline;
130 lex->tok.ctx.file = lex->name;
135 lex_file* lex_open(const char *file)
138 FILE *in = util_fopen(file, "rb");
141 lexerror(NULL, "open failed: '%s'\n", file);
145 lex = (lex_file*)mem_a(sizeof(*lex));
148 lexerror(NULL, "out of memory\n");
152 memset(lex, 0, sizeof(*lex));
155 lex->name = util_strdup(file);
156 lex->line = 1; /* we start counting at 1 */
161 vec_push(lex_filenames, lex->name);
165 lex_file* lex_open_string(const char *str, size_t len, const char *name)
169 lex = (lex_file*)mem_a(sizeof(*lex));
171 lexerror(NULL, "out of memory\n");
175 memset(lex, 0, sizeof(*lex));
178 lex->open_string = str;
179 lex->open_string_length = len;
180 lex->open_string_pos = 0;
182 lex->name = util_strdup(name ? name : "<string-source>");
183 lex->line = 1; /* we start counting at 1 */
188 vec_push(lex_filenames, lex->name);
193 void lex_cleanup(void)
196 for (i = 0; i < vec_size(lex_filenames); ++i)
197 mem_d(lex_filenames[i]);
198 vec_free(lex_filenames);
201 void lex_close(lex_file *lex)
204 for (i = 0; i < vec_size(lex->frames); ++i)
205 mem_d(lex->frames[i].name);
206 vec_free(lex->frames);
209 vec_free(lex->modelname);
215 token_delete(lex->tok);
217 vec_free(lex->tok.value);
219 /* mem_d(lex->name); collected in lex_filenames */
223 static int lex_fgetc(lex_file *lex)
226 return fgetc(lex->file);
227 if (lex->open_string) {
228 if (lex->open_string_pos >= lex->open_string_length)
230 return lex->open_string[lex->open_string_pos++];
235 /* Get or put-back data
236 * The following to functions do NOT understand what kind of data they
238 * The are merely wrapping get/put in order to count line numbers.
240 static void lex_ungetch(lex_file *lex, int ch);
241 static int lex_try_trigraph(lex_file *lex, int old)
246 lex_ungetch(lex, c2);
252 case '=': return '#';
253 case '/': return '\\';
254 case '\'': return '^';
255 case '(': return '[';
256 case ')': return ']';
257 case '!': return '|';
258 case '<': return '{';
259 case '>': return '}';
260 case '-': return '~';
262 lex_ungetch(lex, c3);
263 lex_ungetch(lex, c2);
268 static int lex_try_digraph(lex_file *lex, int ch)
272 if (ch == '<' && c2 == ':')
274 else if (ch == ':' && c2 == '>')
276 else if (ch == '<' && c2 == '%')
278 else if (ch == '%' && c2 == '>')
280 else if (ch == '%' && c2 == ':')
282 lex_ungetch(lex, c2);
286 static int lex_getch(lex_file *lex)
292 if (!lex->push_line && lex->peek[lex->peekpos] == '\n')
294 return lex->peek[lex->peekpos];
298 if (!lex->push_line && ch == '\n')
301 return lex_try_trigraph(lex, ch);
302 else if (!lex->flags.nodigraphs && (ch == '<' || ch == ':' || ch == '%'))
303 return lex_try_digraph(lex, ch);
307 static void lex_ungetch(lex_file *lex, int ch)
309 lex->peek[lex->peekpos++] = ch;
310 if (!lex->push_line && ch == '\n')
314 /* classify characters
315 * some additions to the is*() functions of ctype.h
318 /* Idents are alphanumberic, but they start with alpha or _ */
319 static bool isident_start(int ch)
321 return isalpha(ch) || ch == '_';
324 static bool isident(int ch)
326 return isident_start(ch) || isdigit(ch);
329 /* isxdigit_only is used when we already know it's not a digit
330 * and want to see if it's a hex digit anyway.
332 static bool isxdigit_only(int ch)
334 return (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F');
337 /* Append a character to the token buffer */
338 static void lex_tokench(lex_file *lex, int ch)
340 vec_push(lex->tok.value, ch);
343 /* Append a trailing null-byte */
344 static void lex_endtoken(lex_file *lex)
346 vec_push(lex->tok.value, 0);
347 vec_shrinkby(lex->tok.value, 1);
350 static bool lex_try_pragma(lex_file *lex)
354 char *command = NULL;
358 if (lex->flags.preprocessing)
365 lex_ungetch(lex, ch);
369 for (ch = lex_getch(lex); vec_size(pragma) < 8 && ch >= 'a' && ch <= 'z'; ch = lex_getch(lex))
370 vec_push(pragma, ch);
373 if (ch != ' ' || strcmp(pragma, "pragma")) {
374 lex_ungetch(lex, ch);
378 for (ch = lex_getch(lex); vec_size(command) < 32 && ch >= 'a' && ch <= 'z'; ch = lex_getch(lex))
379 vec_push(command, ch);
380 vec_push(command, 0);
383 lex_ungetch(lex, ch);
387 for (ch = lex_getch(lex); vec_size(param) < 32 && ch != ')' && ch != '\n'; ch = lex_getch(lex))
392 lex_ungetch(lex, ch);
396 if (!strcmp(command, "push")) {
397 if (!strcmp(param, "line")) {
404 else if (!strcmp(command, "pop")) {
405 if (!strcmp(param, "line")) {
413 else if (!strcmp(command, "file")) {
414 lex->name = util_strdup(param);
415 vec_push(lex_filenames, lex->name);
428 while (vec_size(command)) {
429 lex_ungetch(lex, vec_last(command));
436 while (vec_size(command)) {
437 lex_ungetch(lex, vec_last(command));
444 while (vec_size(pragma)) {
445 lex_ungetch(lex, vec_last(pragma));
450 lex_ungetch(lex, '#');
456 /* Skip whitespace and comments and return the first
457 * non-white character.
458 * As this makes use of the above getch() ungetch() functions,
459 * we don't need to care at all about line numbering anymore.
461 * In theory, this function should only be used at the beginning
462 * of lexing, or when we *know* the next character is part of the token.
463 * Otherwise, if the parser throws an error, the linenumber may not be
464 * the line of the error, but the line of the next token AFTER the error.
466 * This is currently only problematic when using c-like string-continuation,
467 * since comments and whitespaces are allowed between 2 such strings.
471 "A continuation of the previous string"
472 // This line is skipped
475 * In this case, if the parse decides it didn't actually want a string,
476 * and uses lex->line to print an error, it will show the ', foo);' line's
479 * On the other hand, the parser is supposed to remember the line of the next
480 * token's beginning. In this case we would want skipwhite() to be called
481 * AFTER reading a token, so that the parser, before reading the NEXT token,
482 * doesn't store teh *comment's* linenumber, but the actual token's linenumber.
485 * here is to store the line of the first character after skipping
486 * the initial whitespace in lex->sline, this happens in lex_do.
488 static int lex_skipwhite(lex_file *lex)
491 bool haswhite = false;
496 while (ch != EOF && isspace(ch)) {
498 if (lex_try_pragma(lex)) {
503 if (lex->flags.preprocessing) {
506 /* see if there was whitespace first */
507 if (haswhite) { /* (vec_size(lex->tok.value)) { */
508 lex_ungetch(lex, ch);
512 /* otherwise return EOL */
516 lex_tokench(lex, ch);
525 /* one line comment */
528 if (lex->flags.preprocessing) {
531 lex_tokench(lex, '/');
532 lex_tokench(lex, '/');
534 lex_tokench(lex, ' ');
535 lex_tokench(lex, ' ');
538 while (ch != EOF && ch != '\n') {
539 if (lex->flags.preprocessing)
540 lex_tokench(lex, ' '); /* ch); */
543 if (lex->flags.preprocessing) {
544 lex_ungetch(lex, '\n');
552 /* multiline comment */
553 if (lex->flags.preprocessing) {
556 lex_tokench(lex, '/');
557 lex_tokench(lex, '*');
559 lex_tokench(lex, ' ');
560 lex_tokench(lex, ' ');
569 if (lex->flags.preprocessing) {
571 lex_tokench(lex, '*');
572 lex_tokench(lex, '/');
574 lex_tokench(lex, ' ');
575 lex_tokench(lex, ' ');
580 if (lex->flags.preprocessing) {
581 lex_tokench(lex, ' '); /* ch); */
584 ch = ' '; /* cause TRUE in the isspace check */
587 /* Otherwise roll back to the slash and break out of the loop */
588 lex_ungetch(lex, ch);
592 } while (ch != EOF && isspace(ch));
596 lex_ungetch(lex, ch);
603 static bool GMQCC_WARN lex_finish_ident(lex_file *lex)
608 while (ch != EOF && isident(ch))
610 lex_tokench(lex, ch);
614 /* last ch was not an ident ch: */
615 lex_ungetch(lex, ch);
620 /* read one ident for the frame list */
621 static int lex_parse_frame(lex_file *lex)
628 while (ch != EOF && ch != '\n' && isspace(ch))
634 if (!isident_start(ch)) {
635 lexerror(lex, "invalid framename, must start with one of a-z or _, got %c", ch);
639 lex_tokench(lex, ch);
640 if (!lex_finish_ident(lex))
646 /* read a list of $frames */
647 static bool lex_finish_frames(lex_file *lex)
654 rc = lex_parse_frame(lex);
655 if (rc > 0) /* end of line */
657 if (rc < 0) /* error */
660 for (i = 0; i < vec_size(lex->frames); ++i) {
661 if (!strcmp(lex->tok.value, lex->frames[i].name)) {
662 lex->frames[i].value = lex->framevalue++;
663 if (lexwarn(lex, WARN_FRAME_MACROS, "duplicate frame macro defined: `%s`", lex->tok.value))
668 if (i < vec_size(lex->frames))
671 m.value = lex->framevalue++;
672 m.name = util_strdup(lex->tok.value);
673 vec_shrinkto(lex->tok.value, 0);
674 vec_push(lex->frames, m);
678 static int GMQCC_WARN lex_finish_string(lex_file *lex, int quote)
686 return TOKEN_STRINGCONST;
688 if (lex->flags.preprocessing && ch == '\\') {
689 lex_tokench(lex, ch);
692 lexerror(lex, "unexpected end of file");
693 lex_ungetch(lex, EOF); /* next token to be TOKEN_EOF */
694 return (lex->tok.ttype = TOKEN_ERROR);
696 lex_tokench(lex, ch);
698 else if (ch == '\\') {
701 lexerror(lex, "unexpected end of file");
702 lex_ungetch(lex, EOF); /* next token to be TOKEN_EOF */
703 return (lex->tok.ttype = TOKEN_ERROR);
710 case 'a': ch = '\a'; break;
711 case 'b': ch = '\b'; break;
712 case 'r': ch = '\r'; break;
713 case 'n': ch = '\n'; break;
714 case 't': ch = '\t'; break;
715 case 'f': ch = '\f'; break;
716 case 'v': ch = '\v'; break;
718 lexwarn(lex, WARN_UNKNOWN_CONTROL_SEQUENCE, "unrecognized control sequence: \\%c", ch);
719 /* so we just add the character plus backslash no matter what it actually is */
720 lex_tokench(lex, '\\');
722 /* add the character finally */
723 lex_tokench(lex, ch);
726 lex_tokench(lex, ch);
728 lexerror(lex, "unexpected end of file within string constant");
729 lex_ungetch(lex, EOF); /* next token to be TOKEN_EOF */
730 return (lex->tok.ttype = TOKEN_ERROR);
733 static int GMQCC_WARN lex_finish_digit(lex_file *lex, int lastch)
739 /* parse a number... */
740 lex->tok.ttype = TOKEN_INTCONST;
742 lex_tokench(lex, ch);
745 if (ch != '.' && !isdigit(ch))
747 if (lastch != '0' || ch != 'x')
749 /* end of the number or EOF */
750 lex_ungetch(lex, ch);
753 lex->tok.constval.i = lastch - '0';
754 return lex->tok.ttype;
760 /* EOF would have been caught above */
764 lex_tokench(lex, ch);
766 while (isdigit(ch) || (ishex && isxdigit_only(ch)))
768 lex_tokench(lex, ch);
772 /* NOT else, '.' can come from above as well */
773 if (ch == '.' && !ishex)
775 /* Allow floating comma in non-hex mode */
776 lex->tok.ttype = TOKEN_FLOATCONST;
777 lex_tokench(lex, ch);
779 /* continue digits-only */
783 lex_tokench(lex, ch);
787 /* put back the last character */
788 /* but do not put back the trailing 'f' or a float */
789 if (lex->tok.ttype == TOKEN_FLOATCONST && ch == 'f')
792 /* generally we don't want words to follow numbers: */
794 lexerror(lex, "unexpected trailing characters after number");
795 return (lex->tok.ttype = TOKEN_ERROR);
797 lex_ungetch(lex, ch);
800 if (lex->tok.ttype == TOKEN_FLOATCONST)
801 lex->tok.constval.f = strtod(lex->tok.value, NULL);
803 lex->tok.constval.i = strtol(lex->tok.value, NULL, 0);
804 return lex->tok.ttype;
807 int lex_do(lex_file *lex)
818 ch = lex_skipwhite(lex);
819 if (!lex->flags.mergelines || ch != '\\')
823 lex_ungetch(lex, ch);
827 /* we reached a linemerge */
828 lex_tokench(lex, '\n');
832 lex->sline = lex->line;
833 lex->tok.ctx.line = lex->sline;
834 lex->tok.ctx.file = lex->name;
836 if (lex->flags.preprocessing && (ch == TOKEN_WHITE || ch == TOKEN_EOL || ch == TOKEN_FATAL)) {
837 return (lex->tok.ttype = ch);
841 return (lex->tok.ttype = TOKEN_FATAL);
845 return (lex->tok.ttype = TOKEN_EOF);
848 /* modelgen / spiritgen commands */
854 if (!isident_start(ch)) {
855 lexerror(lex, "hanging '$' modelgen/spritegen command line");
858 lex_tokench(lex, ch);
859 if (!lex_finish_ident(lex))
860 return (lex->tok.ttype = TOKEN_ERROR);
862 /* skip the known commands */
865 if (!strcmp(v, "frame") || !strcmp(v, "framesave"))
867 /* frame/framesave command works like an enum
868 * similar to fteqcc we handle this in the lexer.
869 * The reason for this is that it is sensitive to newlines,
870 * which the parser is unaware of
872 if (!lex_finish_frames(lex))
873 return (lex->tok.ttype = TOKEN_ERROR);
877 if (!strcmp(v, "framevalue"))
880 while (ch != EOF && isspace(ch) && ch != '\n')
884 lexerror(lex, "$framevalue requires an integer parameter");
889 lex->tok.ttype = lex_finish_digit(lex, ch);
891 if (lex->tok.ttype != TOKEN_INTCONST) {
892 lexerror(lex, "$framevalue requires an integer parameter");
895 lex->framevalue = lex->tok.constval.i;
899 if (!strcmp(v, "framerestore"))
905 rc = lex_parse_frame(lex);
908 lexerror(lex, "$framerestore requires a framename parameter");
912 return (lex->tok.ttype = TOKEN_FATAL);
915 for (frame = 0; frame < vec_size(lex->frames); ++frame) {
916 if (!strcmp(v, lex->frames[frame].name)) {
917 lex->framevalue = lex->frames[frame].value;
921 lexerror(lex, "unknown framename `%s`", v);
925 if (!strcmp(v, "modelname"))
931 rc = lex_parse_frame(lex);
934 lexerror(lex, "$modelname requires a parameter");
938 return (lex->tok.ttype = TOKEN_FATAL);
941 if (lex->modelname) {
943 m.value = lex->framevalue;
944 m.name = lex->modelname;
945 lex->modelname = NULL;
946 vec_push(lex->frames, m);
948 lex->modelname = lex->tok.value;
949 lex->tok.value = NULL;
953 if (!strcmp(v, "flush"))
956 for (frame = 0; frame < vec_size(lex->frames); ++frame)
957 mem_d(lex->frames[frame].name);
958 vec_free(lex->frames);
959 /* skip line (fteqcc does it too) */
961 while (ch != EOF && ch != '\n')
966 if (!strcmp(v, "cd") ||
967 !strcmp(v, "origin") ||
968 !strcmp(v, "base") ||
969 !strcmp(v, "flags") ||
970 !strcmp(v, "scale") ||
975 while (ch != EOF && ch != '\n')
980 for (frame = 0; frame < vec_size(lex->frames); ++frame) {
981 if (!strcmp(v, lex->frames[frame].name)) {
982 lex->tok.constval.i = lex->frames[frame].value;
983 return (lex->tok.ttype = TOKEN_INTCONST);
987 lexerror(lex, "invalid frame macro");
991 /* single-character tokens */
996 lex_tokench(lex, ch);
998 if (lex->flags.noops)
999 return (lex->tok.ttype = ch);
1001 return (lex->tok.ttype = TOKEN_OPERATOR);
1010 lex_tokench(lex, ch);
1012 return (lex->tok.ttype = ch);
1017 if (lex->flags.noops)
1019 /* Detect characters early which are normally
1020 * operators OR PART of an operator.
1037 lex_tokench(lex, ch);
1039 return (lex->tok.ttype = ch);
1046 lex_tokench(lex, ch);
1047 /* peak ahead once */
1048 nextch = lex_getch(lex);
1049 if (nextch != '.') {
1050 lex_ungetch(lex, nextch);
1052 return (lex->tok.ttype = ch);
1054 /* peak ahead again */
1055 nextch = lex_getch(lex);
1056 if (nextch != '.') {
1057 lex_ungetch(lex, nextch);
1058 lex_ungetch(lex, nextch);
1060 return (lex->tok.ttype = ch);
1062 /* fill the token to be "..." */
1063 lex_tokench(lex, ch);
1064 lex_tokench(lex, ch);
1066 return (lex->tok.ttype = TOKEN_DOTS);
1070 if (ch == ',' || ch == '.') {
1071 lex_tokench(lex, ch);
1073 return (lex->tok.ttype = TOKEN_OPERATOR);
1076 if (ch == '+' || ch == '-' || /* ++, --, +=, -= and -> as well! */
1077 ch == '>' || ch == '<' || /* <<, >>, <=, >= */
1078 ch == '=' || ch == '!' || /* ==, != */
1079 ch == '&' || ch == '|') /* &&, ||, &=, |= */
1081 lex_tokench(lex, ch);
1083 nextch = lex_getch(lex);
1084 if (nextch == ch || nextch == '=') {
1085 lex_tokench(lex, nextch);
1086 } else if (ch == '-' && nextch == '>') {
1087 lex_tokench(lex, nextch);
1089 lex_ungetch(lex, nextch);
1092 return (lex->tok.ttype = TOKEN_OPERATOR);
1096 if (ch == '^' || ch == '~' || ch == '!')
1098 lex_tokench(lex, ch);
1100 return (lex->tok.ttype = TOKEN_OPERATOR);
1104 if (ch == '*' || ch == '/') /* *=, /= */
1106 lex_tokench(lex, ch);
1108 nextch = lex_getch(lex);
1109 if (nextch == '=') {
1110 lex_tokench(lex, nextch);
1112 lex_ungetch(lex, nextch);
1115 return (lex->tok.ttype = TOKEN_OPERATOR);
1118 if (isident_start(ch))
1122 lex_tokench(lex, ch);
1123 if (!lex_finish_ident(lex)) {
1125 return (lex->tok.ttype = TOKEN_ERROR);
1128 lex->tok.ttype = TOKEN_IDENT;
1131 if (!strcmp(v, "void")) {
1132 lex->tok.ttype = TOKEN_TYPENAME;
1133 lex->tok.constval.t = TYPE_VOID;
1134 } else if (!strcmp(v, "int")) {
1135 lex->tok.ttype = TOKEN_TYPENAME;
1136 lex->tok.constval.t = TYPE_INTEGER;
1137 } else if (!strcmp(v, "float")) {
1138 lex->tok.ttype = TOKEN_TYPENAME;
1139 lex->tok.constval.t = TYPE_FLOAT;
1140 } else if (!strcmp(v, "string")) {
1141 lex->tok.ttype = TOKEN_TYPENAME;
1142 lex->tok.constval.t = TYPE_STRING;
1143 } else if (!strcmp(v, "entity")) {
1144 lex->tok.ttype = TOKEN_TYPENAME;
1145 lex->tok.constval.t = TYPE_ENTITY;
1146 } else if (!strcmp(v, "vector")) {
1147 lex->tok.ttype = TOKEN_TYPENAME;
1148 lex->tok.constval.t = TYPE_VECTOR;
1149 } else if (!strcmp(v, "for") ||
1150 !strcmp(v, "while") ||
1153 !strcmp(v, "else") ||
1154 !strcmp(v, "local") ||
1155 !strcmp(v, "return") ||
1156 !strcmp(v, "not") ||
1157 !strcmp(v, "const"))
1159 lex->tok.ttype = TOKEN_KEYWORD;
1161 else if (opts_standard != COMPILER_QCC)
1163 /* other standards reserve these keywords */
1164 if (!strcmp(v, "switch") ||
1165 !strcmp(v, "struct") ||
1166 !strcmp(v, "union") ||
1167 !strcmp(v, "break") ||
1168 !strcmp(v, "continue") ||
1171 lex->tok.ttype = TOKEN_KEYWORD;
1175 return lex->tok.ttype;
1180 lex->flags.nodigraphs = true;
1181 if (lex->flags.preprocessing)
1182 lex_tokench(lex, ch);
1183 lex->tok.ttype = lex_finish_string(lex, '"');
1184 if (lex->flags.preprocessing)
1185 lex_tokench(lex, ch);
1186 while (!lex->flags.preprocessing && lex->tok.ttype == TOKEN_STRINGCONST)
1188 /* Allow c style "string" "continuation" */
1189 ch = lex_skipwhite(lex);
1191 lex_ungetch(lex, ch);
1195 lex->tok.ttype = lex_finish_string(lex, '"');
1197 lex->flags.nodigraphs = false;
1199 return lex->tok.ttype;
1204 /* we parse character constants like string,
1205 * but return TOKEN_CHARCONST, or a vector type if it fits...
1206 * Likewise actual unescaping has to be done by the parser.
1207 * The difference is we don't allow 'char' 'continuation'.
1209 if (lex->flags.preprocessing)
1210 lex_tokench(lex, ch);
1211 lex->tok.ttype = lex_finish_string(lex, '\'');
1212 if (lex->flags.preprocessing)
1213 lex_tokench(lex, ch);
1216 /* It's a vector if we can successfully scan 3 floats */
1218 if (sscanf_s(lex->tok.value, " %f %f %f ",
1219 &lex->tok.constval.v.x, &lex->tok.constval.v.y, &lex->tok.constval.v.z) == 3)
1221 if (sscanf(lex->tok.value, " %f %f %f ",
1222 &lex->tok.constval.v.x, &lex->tok.constval.v.y, &lex->tok.constval.v.z) == 3)
1226 lex->tok.ttype = TOKEN_VECTORCONST;
1229 return lex->tok.ttype;
1234 lex->tok.ttype = lex_finish_digit(lex, ch);
1236 return lex->tok.ttype;
1239 lexerror(lex, "unknown token");
1240 return (lex->tok.ttype = TOKEN_ERROR);