From b20732900e4636a467c0183a47f7396700f5f743 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 7 Aug 2024 15:11:22 +0200 Subject: Adding upstream version 6.9.7. Signed-off-by: Daniel Baumann --- scripts/kconfig/lexer.l | 123 ++++++++++++++++++++++-------------------------- 1 file changed, 56 insertions(+), 67 deletions(-) (limited to 'scripts/kconfig/lexer.l') diff --git a/scripts/kconfig/lexer.l b/scripts/kconfig/lexer.l index 2c2b3e6f24..89544c3a1a 100644 --- a/scripts/kconfig/lexer.l +++ b/scripts/kconfig/lexer.l @@ -14,16 +14,22 @@ #include #include "lkc.h" +#include "preprocess.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; +/* The Kconfig file currently being parsed. */ +const char *cur_filename; + +/* + * The line number of the current statement. This does not match yylineno. + * yylineno is used by the lexer, while cur_lineno is used by the parser. + */ +int cur_lineno; static int prev_prev_token = T_EOL; static int prev_token = T_EOL; @@ -33,6 +39,9 @@ static int text_size, text_asize; struct buffer { struct buffer *parent; YY_BUFFER_STATE state; + int yylineno; + const char *filename; + int source_lineno; }; static struct buffer *current_buf; @@ -77,7 +86,7 @@ static void warn_ignored_character(char chr) { fprintf(stderr, "%s:%d:warning: ignoring unsupported character '%c'\n", - current_file->name, yylineno, chr); + cur_filename, yylineno, chr); } %} @@ -180,7 +189,7 @@ n [A-Za-z0-9_-] \n { fprintf(stderr, "%s:%d:warning: multi-line strings not supported\n", - zconf_curname(), zconf_lineno()); + cur_filename, cur_lineno); unput('\n'); BEGIN(INITIAL); yylval.string = text; @@ -246,9 +255,9 @@ n [A-Za-z0-9_-] 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); + cur_filename, yylineno); - if (current_file) { + if (current_buf) { zconf_endfile(); return T_EOL; } @@ -267,19 +276,17 @@ repeat: token = yylex1(); if (prev_token == T_EOL || prev_token == T_HELPTEXT) { - if (token == T_EOL) { + if (token == T_EOL) /* Do not pass unneeded T_EOL to the parser. */ goto repeat; - } else { + else /* - * For the parser, update file/lineno at the first token + * For the parser, update 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; - } + cur_lineno = yylineno; } if (prev_prev_token == T_EOL && prev_token == T_WORD && @@ -394,78 +401,60 @@ void zconf_initscan(const char *name) exit(1); } - current_buf = xmalloc(sizeof(*current_buf)); - memset(current_buf, 0, sizeof(*current_buf)); - - current_file = file_lookup(name); + cur_filename = 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)); + bool recur_include = false; - current_buf->state = YY_CURRENT_BUFFER; - yyin = zconf_fopen(file->name); + buf->state = YY_CURRENT_BUFFER; + buf->yylineno = yylineno; + buf->filename = cur_filename; + buf->source_lineno = cur_lineno; + buf->parent = current_buf; + current_buf = buf; + yyin = zconf_fopen(name); if (!yyin) { fprintf(stderr, "%s:%d: can't open file \"%s\"\n", - zconf_curname(), zconf_lineno(), file->name); + cur_filename, cur_lineno, 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); - } + for (buf = current_buf; buf; buf = buf->parent) { + if (!strcmp(buf->filename, name)) + recur_include = true; } - 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; + if (recur_include) { + fprintf(stderr, + "Recursive inclusion detected.\n" + "Inclusion path:\n" + " current file : %s\n", name); - parent = current_buf->parent; - if (parent) { - fclose(yyin); - yy_delete_buffer(YY_CURRENT_BUFFER); - yy_switch_to_buffer(parent->state); + for (buf = current_buf; buf; buf = buf->parent) + fprintf(stderr, " included from: %s:%d\n", + buf->filename, buf->source_lineno); + exit(1); } - free(current_buf); - current_buf = parent; -} -int zconf_lineno(void) -{ - return current_pos.lineno; + yylineno = 1; + cur_filename = file_lookup(name); } -const char *zconf_curname(void) +static void zconf_endfile(void) { - return current_pos.file ? current_pos.file->name : ""; + struct buffer *tmp; + + fclose(yyin); + yy_delete_buffer(YY_CURRENT_BUFFER); + yy_switch_to_buffer(current_buf->state); + yylineno = current_buf->yylineno; + cur_filename = current_buf->filename; + tmp = current_buf; + current_buf = current_buf->parent; + free(tmp); } -- cgit v1.2.3