diff options
Diffstat (limited to 'scripts/genksyms/lex.l')
| -rw-r--r-- | scripts/genksyms/lex.l | 44 |
1 files changed, 31 insertions, 13 deletions
diff --git a/scripts/genksyms/lex.l b/scripts/genksyms/lex.l index fe50ff9..e4ddd49 100644 --- a/scripts/genksyms/lex.l +++ b/scripts/genksyms/lex.l @@ -55,10 +55,6 @@ CHAR L?\'([^\\\']*\\.)*[^\\\']*\' MC_TOKEN ([~%^&*+=|<>/-]=)|(&&)|("||")|(->)|(<<)|(>>) -/* Version 2 checksumming does proper tokenization; version 1 wasn't - quite so pedantic. */ -%s V2_TOKENS - /* We don't do multiple input files. */ %option noyywrap @@ -84,9 +80,9 @@ MC_TOKEN ([~%^&*+=|<>/-]=)|(&&)|("||")|(->)|(<<)|(>>) recognized as tokens. We don't actually use them since we don't parse expressions, but we do want whitespace to be arranged around them properly. */ -<V2_TOKENS>{MC_TOKEN} return OTHER; -<V2_TOKENS>{INT} return INT; -<V2_TOKENS>{REAL} return REAL; +{MC_TOKEN} return OTHER; +{INT} return INT; +{REAL} return REAL; "..." return DOTS; @@ -103,12 +99,23 @@ MC_TOKEN ([~%^&*+=|<>/-]=)|(&&)|("||")|(->)|(<<)|(>>) /* Macros to append to our phrase collection list. */ +/* + * We mark any token, that that equals to a known enumerator, as + * SYM_ENUM_CONST. The parser will change this for struct and union tags later, + * the only problem is struct and union members: + * enum e { a, b }; struct s { int a, b; } + * but in this case, the only effect will be, that the ABI checksums become + * more volatile, which is acceptable. Also, such collisions are quite rare, + * so far it was only observed in include/linux/telephony.h. + */ #define _APP(T,L) do { \ cur_node = next_node; \ next_node = xmalloc(sizeof(*next_node)); \ next_node->next = cur_node; \ cur_node->string = memcpy(xmalloc(L+1), T, L+1); \ - cur_node->tag = SYM_NORMAL; \ + cur_node->tag = \ + find_symbol(cur_node->string, SYM_ENUM_CONST, 1)?\ + SYM_ENUM_CONST : SYM_NORMAL ; \ } while (0) #define APP _APP(yytext, yyleng) @@ -134,7 +141,6 @@ yylex(void) if (lexstate == ST_NOTSTARTED) { - BEGIN(V2_TOKENS); next_node = xmalloc(sizeof(*next_node)); next_node->next = NULL; lexstate = ST_NORMAL; @@ -187,8 +193,8 @@ repeat: case STRUCT_KEYW: case UNION_KEYW: - dont_want_brace_phrase = 3; case ENUM_KEYW: + dont_want_brace_phrase = 3; suppress_type_lookup = 2; goto fini; @@ -198,8 +204,7 @@ repeat: } if (!suppress_type_lookup) { - struct symbol *sym = find_symbol(yytext, SYM_TYPEDEF); - if (sym && sym->type == SYM_TYPEDEF) + if (find_symbol(yytext, SYM_TYPEDEF, 1)) token = TYPE; } } @@ -318,7 +323,20 @@ repeat: ++count; APP; goto repeat; - case ')': case ']': case '}': + case '}': + /* is this the last line of an enum declaration? */ + if (count == 0) + { + /* Put back the token we just read so's we can find it again + after registering the expression. */ + unput(token); + + lexstate = ST_NORMAL; + token = EXPRESSION_PHRASE; + break; + } + /* FALLTHRU */ + case ')': case ']': --count; APP; goto repeat; |