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-rw-r--r--tools/kconfig/lexer.l468
1 files changed, 0 insertions, 468 deletions
diff --git a/tools/kconfig/lexer.l b/tools/kconfig/lexer.l
deleted file mode 100644
index cc386e4..0000000
--- a/tools/kconfig/lexer.l
+++ /dev/null
@@ -1,468 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
- */
-%option nostdinit noyywrap never-interactive full ecs
-%option 8bit nodefault yylineno
-%x ASSIGN_VAL HELP STRING
-%{
-
-#include <assert.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "lkc.h"
-#include "parser.tab.h"
-
-#define YY_DECL static int yylex1(void)
-
-#define START_STRSIZE 16
-
-static struct {
- struct file *file;
- int lineno;
-} current_pos;
-
-static int prev_prev_token = T_EOL;
-static int prev_token = T_EOL;
-static char *text;
-static int text_size, text_asize;
-
-struct buffer {
- struct buffer *parent;
- YY_BUFFER_STATE state;
-};
-
-static struct buffer *current_buf;
-
-static int last_ts, first_ts;
-
-static char *expand_token(const char *in, size_t n);
-static void append_expanded_string(const char *in);
-static void zconf_endhelp(void);
-static void zconf_endfile(void);
-
-static void new_string(void)
-{
- text = xmalloc(START_STRSIZE);
- text_asize = START_STRSIZE;
- text_size = 0;
- *text = 0;
-}
-
-static void append_string(const char *str, int size)
-{
- int new_size = text_size + size + 1;
- if (new_size > text_asize) {
- new_size += START_STRSIZE - 1;
- new_size &= -START_STRSIZE;
- text = xrealloc(text, new_size);
- text_asize = new_size;
- }
- memcpy(text + text_size, str, size);
- text_size += size;
- text[text_size] = 0;
-}
-
-static void alloc_string(const char *str, int size)
-{
- text = xmalloc(size + 1);
- memcpy(text, str, size);
- text[size] = 0;
-}
-
-static void warn_ignored_character(char chr)
-{
- fprintf(stderr,
- "%s:%d:warning: ignoring unsupported character '%c'\n",
- current_file->name, yylineno, chr);
-}
-%}
-
-n [A-Za-z0-9_-]
-
-%%
- char open_quote = 0;
-
-#.* /* ignore comment */
-[ \t]* /* whitespaces */
-\\\n /* escaped new line */
-\n return T_EOL;
-"bool" return T_BOOL;
-"choice" return T_CHOICE;
-"comment" return T_COMMENT;
-"config" return T_CONFIG;
-"def_bool" return T_DEF_BOOL;
-"def_tristate" return T_DEF_TRISTATE;
-"default" return T_DEFAULT;
-"depends" return T_DEPENDS;
-"endchoice" return T_ENDCHOICE;
-"endif" return T_ENDIF;
-"endmenu" return T_ENDMENU;
-"help" return T_HELP;
-"hex" return T_HEX;
-"if" return T_IF;
-"imply" return T_IMPLY;
-"int" return T_INT;
-"mainmenu" return T_MAINMENU;
-"menu" return T_MENU;
-"menuconfig" return T_MENUCONFIG;
-"modules" return T_MODULES;
-"on" return T_ON;
-"optional" return T_OPTIONAL;
-"prompt" return T_PROMPT;
-"range" return T_RANGE;
-"select" return T_SELECT;
-"source" return T_SOURCE;
-"string" return T_STRING;
-"tristate" return T_TRISTATE;
-"visible" return T_VISIBLE;
-"||" return T_OR;
-"&&" return T_AND;
-"=" return T_EQUAL;
-"!=" return T_UNEQUAL;
-"<" return T_LESS;
-"<=" return T_LESS_EQUAL;
-">" return T_GREATER;
-">=" return T_GREATER_EQUAL;
-"!" return T_NOT;
-"(" return T_OPEN_PAREN;
-")" return T_CLOSE_PAREN;
-":=" return T_COLON_EQUAL;
-"+=" return T_PLUS_EQUAL;
-\"|\' {
- open_quote = yytext[0];
- new_string();
- BEGIN(STRING);
- }
-{n}+ {
- alloc_string(yytext, yyleng);
- yylval.string = text;
- return T_WORD;
- }
-({n}|$)+ {
- /* this token includes at least one '$' */
- yylval.string = expand_token(yytext, yyleng);
- if (strlen(yylval.string))
- return T_WORD;
- free(yylval.string);
- }
-. warn_ignored_character(*yytext);
-
-<ASSIGN_VAL>{
- [^[:blank:]\n]+.* {
- alloc_string(yytext, yyleng);
- yylval.string = text;
- return T_ASSIGN_VAL;
- }
- \n { BEGIN(INITIAL); return T_EOL; }
- .
-}
-
-<STRING>{
- "$".* append_expanded_string(yytext);
- [^$'"\\\n]+ {
- append_string(yytext, yyleng);
- }
- \\.? {
- append_string(yytext + 1, yyleng - 1);
- }
- \'|\" {
- if (open_quote == yytext[0]) {
- BEGIN(INITIAL);
- yylval.string = text;
- return T_WORD_QUOTE;
- } else
- append_string(yytext, 1);
- }
- \n {
- fprintf(stderr,
- "%s:%d:warning: multi-line strings not supported\n",
- zconf_curname(), zconf_lineno());
- unput('\n');
- BEGIN(INITIAL);
- yylval.string = text;
- return T_WORD_QUOTE;
- }
- <<EOF>> {
- BEGIN(INITIAL);
- yylval.string = text;
- return T_WORD_QUOTE;
- }
-}
-
-<HELP>{
- [ \t]+ {
- int ts, i;
-
- ts = 0;
- for (i = 0; i < yyleng; i++) {
- if (yytext[i] == '\t')
- ts = (ts & ~7) + 8;
- else
- ts++;
- }
- last_ts = ts;
- if (first_ts) {
- if (ts < first_ts) {
- zconf_endhelp();
- return T_HELPTEXT;
- }
- ts -= first_ts;
- while (ts > 8) {
- append_string(" ", 8);
- ts -= 8;
- }
- append_string(" ", ts);
- }
- }
- [ \t]*\n/[^ \t\n] {
- zconf_endhelp();
- return T_HELPTEXT;
- }
- [ \t]*\n {
- append_string("\n", 1);
- }
- [^ \t\n].* {
- while (yyleng) {
- if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t'))
- break;
- yyleng--;
- }
- append_string(yytext, yyleng);
- if (!first_ts)
- first_ts = last_ts;
- }
- <<EOF>> {
- zconf_endhelp();
- return T_HELPTEXT;
- }
-}
-
-<<EOF>> {
- BEGIN(INITIAL);
-
- if (prev_token != T_EOL && prev_token != T_HELPTEXT)
- fprintf(stderr, "%s:%d:warning: no new line at end of file\n",
- current_file->name, yylineno);
-
- if (current_file) {
- zconf_endfile();
- return T_EOL;
- }
- fclose(yyin);
- yyterminate();
-}
-
-%%
-
-/* second stage lexer */
-int yylex(void)
-{
- int token;
-
-repeat:
- token = yylex1();
-
- if (prev_token == T_EOL || prev_token == T_HELPTEXT) {
- if (token == T_EOL) {
- /* Do not pass unneeded T_EOL to the parser. */
- goto repeat;
- } else {
- /*
- * For the parser, update file/lineno at the first token
- * of each statement. Generally, \n is a statement
- * terminator in Kconfig, but it is not always true
- * because \n could be escaped by a backslash.
- */
- current_pos.file = current_file;
- current_pos.lineno = yylineno;
- }
- }
-
- if (prev_prev_token == T_EOL && prev_token == T_WORD &&
- (token == T_EQUAL || token == T_COLON_EQUAL || token == T_PLUS_EQUAL))
- BEGIN(ASSIGN_VAL);
-
- prev_prev_token = prev_token;
- prev_token = token;
-
- return token;
-}
-
-static char *expand_token(const char *in, size_t n)
-{
- char *out;
- int c;
- char c2;
- const char *rest, *end;
-
- new_string();
- append_string(in, n);
-
- /* get the whole line because we do not know the end of token. */
- while ((c = input()) != EOF) {
- if (c == '\n') {
- unput(c);
- break;
- }
- c2 = c;
- append_string(&c2, 1);
- }
-
- rest = text;
- out = expand_one_token(&rest);
-
- /* push back unused characters to the input stream */
- end = rest + strlen(rest);
- while (end > rest)
- unput(*--end);
-
- free(text);
-
- return out;
-}
-
-static void append_expanded_string(const char *str)
-{
- const char *end;
- char *res;
-
- str++;
-
- res = expand_dollar(&str);
-
- /* push back unused characters to the input stream */
- end = str + strlen(str);
- while (end > str)
- unput(*--end);
-
- append_string(res, strlen(res));
-
- free(res);
-}
-
-void zconf_starthelp(void)
-{
- new_string();
- last_ts = first_ts = 0;
- BEGIN(HELP);
-}
-
-static void zconf_endhelp(void)
-{
- yylval.string = text;
- BEGIN(INITIAL);
-}
-
-
-/*
- * Try to open specified file with following names:
- * ./name
- * $(srctree)/name
- * The latter is used when srctree is separate from objtree
- * when compiling the kernel.
- * Return NULL if file is not found.
- */
-FILE *zconf_fopen(const char *name)
-{
- char *env, fullname[PATH_MAX+1];
- FILE *f;
-
- f = fopen(name, "r");
- if (!f && name != NULL && name[0] != '/') {
- env = getenv(SRCTREE);
- if (env) {
- snprintf(fullname, sizeof(fullname),
- "%s/%s", env, name);
- f = fopen(fullname, "r");
- }
- }
- return f;
-}
-
-void zconf_initscan(const char *name)
-{
- yyin = zconf_fopen(name);
- if (!yyin) {
- fprintf(stderr, "can't find file %s\n", name);
- exit(1);
- }
-
- current_buf = xmalloc(sizeof(*current_buf));
- memset(current_buf, 0, sizeof(*current_buf));
-
- current_file = file_lookup(name);
- yylineno = 1;
-}
-
-void zconf_nextfile(const char *name)
-{
- struct file *iter;
- struct file *file = file_lookup(name);
- struct buffer *buf = xmalloc(sizeof(*buf));
- memset(buf, 0, sizeof(*buf));
-
- current_buf->state = YY_CURRENT_BUFFER;
- yyin = zconf_fopen(file->name);
- if (!yyin) {
- fprintf(stderr, "%s:%d: can't open file \"%s\"\n",
- zconf_curname(), zconf_lineno(), file->name);
- exit(1);
- }
- yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
- buf->parent = current_buf;
- current_buf = buf;
-
- current_file->lineno = yylineno;
- file->parent = current_file;
-
- for (iter = current_file; iter; iter = iter->parent) {
- if (!strcmp(iter->name, file->name)) {
- fprintf(stderr,
- "Recursive inclusion detected.\n"
- "Inclusion path:\n"
- " current file : %s\n", file->name);
- iter = file;
- do {
- iter = iter->parent;
- fprintf(stderr, " included from: %s:%d\n",
- iter->name, iter->lineno - 1);
- } while (strcmp(iter->name, file->name));
- exit(1);
- }
- }
-
- yylineno = 1;
- current_file = file;
-}
-
-static void zconf_endfile(void)
-{
- struct buffer *parent;
-
- current_file = current_file->parent;
- if (current_file)
- yylineno = current_file->lineno;
-
- parent = current_buf->parent;
- if (parent) {
- fclose(yyin);
- yy_delete_buffer(YY_CURRENT_BUFFER);
- yy_switch_to_buffer(parent->state);
- }
- free(current_buf);
- current_buf = parent;
-}
-
-int zconf_lineno(void)
-{
- return current_pos.lineno;
-}
-
-const char *zconf_curname(void)
-{
- return current_pos.file ? current_pos.file->name : "<none>";
-}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-09 08:57:34 +0000