X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f518dbaf46eb28bd39695474de6118683d905e5f..06ec0105b12cdfa2994283e345154e6720354808:/src/system.h?ds=sidebyside diff --git a/src/system.h b/src/system.h index 7aa2c9fa..987ebe2a 100644 --- a/src/system.h +++ b/src/system.h @@ -39,16 +39,26 @@ #include <stdlib.h> #include <string.h> +#define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array)) #define STREQ(L, R) (strcmp(L, R) == 0) #define STRNEQ(L, R) (!STREQ(L, R)) -#if HAVE_SYS_TYPES_H -# include <sys/types.h> -#endif +/* Just like strncmp, but the second argument must be a literal string + and you don't specify the length. */ +#define STRNCMP_LIT(S, Literal) \ + strncmp (S, "" Literal "", sizeof (Literal) - 1) + +/* Whether Literal is a prefix of S. */ +#define STRPREFIX_LIT(Literal, S) \ + (STRNCMP_LIT (S, Literal) == 0) #include <unistd.h> #include <inttypes.h> +#define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array)) +#define STREQ(L, R) (strcmp(L, R) == 0) +#define STRNEQ(L, R) (!STREQ(L, R)) + #ifndef UINTPTR_MAX /* This isn't perfect, but it's good enough for Bison, which needs only to hash pointers. */ @@ -88,7 +98,7 @@ typedef size_t uintptr_t; #ifndef __attribute__ /* This feature is available in gcc versions 2.5 and later. */ # if (! defined __GNUC__ || __GNUC__ < 2 \ - || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__) + || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)) # define __attribute__(Spec) /* empty */ # endif #endif @@ -108,7 +118,6 @@ typedef size_t uintptr_t; # define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) #endif -#define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__) /*------. | NLS. | @@ -163,38 +172,57 @@ typedef size_t uintptr_t; #define obstack_chunk_free free #include <obstack.h> +/* String-grow: append Str to Obs. */ + #define obstack_sgrow(Obs, Str) \ obstack_grow (Obs, Str, strlen (Str)) -#define obstack_fgrow1(Obs, Format, Arg1) \ -do { \ - char buf[4096]; \ - sprintf (buf, Format, Arg1); \ - obstack_grow (Obs, buf, strlen (buf)); \ -} while (0) +/* Output Str escaped for our postprocessing (i.e., escape M4 special + characters). -#define obstack_fgrow2(Obs, Format, Arg1, Arg2) \ -do { \ - char buf[4096]; \ - sprintf (buf, Format, Arg1, Arg2); \ - obstack_grow (Obs, buf, strlen (buf)); \ -} while (0) + For instance "[foo]" -> "@{foo@}", "$$" -> "$][$][". */ -#define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3) \ -do { \ - char buf[4096]; \ - sprintf (buf, Format, Arg1, Arg2, Arg3); \ - obstack_grow (Obs, buf, strlen (buf)); \ -} while (0) +# define obstack_escape(Obs, Str) \ + do { \ + char const *p__; \ + for (p__ = Str; *p__; p__++) \ + switch (*p__) \ + { \ + case '$': obstack_sgrow (Obs, "$]["); break; \ + case '@': obstack_sgrow (Obs, "@@" ); break; \ + case '[': obstack_sgrow (Obs, "@{" ); break; \ + case ']': obstack_sgrow (Obs, "@}" ); break; \ + default: obstack_1grow (Obs, *p__ ); break; \ + } \ + } while (0) -#define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4) \ -do { \ - char buf[4096]; \ - sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4); \ - obstack_grow (Obs, buf, strlen (buf)); \ -} while (0) + +/* Output Str both quoted for M4 (i.e., embed in [[...]]), and escaped + for our postprocessing (i.e., escape M4 special characters). If + Str is empty (or NULL), output "[]" instead of "[[]]" as it make M4 + programming easier (m4_ifval can be used). + + For instance "[foo]" -> "[[@{foo@}]]", "$$" -> "[[$][$][]]". */ + +# define obstack_quote(Obs, Str) \ + do { \ + char const* obstack_quote_p = Str; \ + if (obstack_quote_p && obstack_quote_p[0]) \ + { \ + obstack_sgrow (Obs, "[["); \ + obstack_escape (Obs, obstack_quote_p); \ + obstack_sgrow (Obs, "]]"); \ + } \ + else \ + obstack_sgrow (Obs, "[]"); \ + } while (0) +/* Append the ending 0, finish Obs, and return the string. */ + +# define obstack_finish0(Obs) \ + (obstack_1grow (Obs, '\0'), (char *) obstack_finish (Obs)) + /*-----------------------------------------. | Extensions to use for the output files. | @@ -208,10 +236,6 @@ do { \ # define TAB_EXT ".tab" #endif -#ifndef DEFAULT_TMPDIR -# define DEFAULT_TMPDIR "/tmp" -#endif - /*---------------------.