Add some const decorations

These mainly help understanding the function signatures better.

diff --git a/src/backend/utils/adt/like.c b/src/backend/utils/adt/like.c
index 46c4fc727cd90b30c045c846a2fd2a8cd2404854..853c9c01e925620e14f3a85f240539ffafe076f9 100644 (file)
--- a/src/backend/utils/adt/like.c
+++ b/src/backend/utils/adt/like.c
@@ -31,21 +31,21 @@
 #define LIKE_ABORT                     (-1)
 
 
-static int SB_MatchText(char *t, int tlen, char *p, int plen,
+static int SB_MatchText(const char *t, int tlen, const char *p, int plen,
             pg_locale_t locale, bool locale_is_c);
 static text *SB_do_like_escape(text *, text *);
 
-static int MB_MatchText(char *t, int tlen, char *p, int plen,
+static int MB_MatchText(const char *t, int tlen, const char *p, int plen,
             pg_locale_t locale, bool locale_is_c);
 static text *MB_do_like_escape(text *, text *);
 
-static int UTF8_MatchText(char *t, int tlen, char *p, int plen,
+static int UTF8_MatchText(const char *t, int tlen, const char *p, int plen,
               pg_locale_t locale, bool locale_is_c);
 
-static int SB_IMatchText(char *t, int tlen, char *p, int plen,
+static int SB_IMatchText(const char *t, int tlen, const char *p, int plen,
              pg_locale_t locale, bool locale_is_c);
 
-static int GenericMatchText(char *s, int slen, char *p, int plen);
+static int GenericMatchText(const char *s, int slen, const char *p, int plen);
 static int Generic_Text_IC_like(text *str, text *pat, Oid collation);
 
 /*--------------------
@@ -54,7 +54,7 @@ static int    Generic_Text_IC_like(text *str, text *pat, Oid collation);
  *--------------------
  */
 static inline int
-wchareq(char *p1, char *p2)
+wchareq(const char *p1, const char *p2)
 {
    int         p1_len;
 
@@ -148,7 +148,7 @@ SB_lower_char(unsigned char c, pg_locale_t locale, bool locale_is_c)
 
 /* Generic for all cases not requiring inline case-folding */
 static inline int
-GenericMatchText(char *s, int slen, char *p, int plen)
+GenericMatchText(const char *s, int slen, const char *p, int plen)
 {
    if (pg_database_encoding_max_length() == 1)
        return SB_MatchText(s, slen, p, plen, 0, true);

diff --git a/src/backend/utils/adt/like_match.c b/src/backend/utils/adt/like_match.c
index a0672d1b9bffda210ed081bc56f8435e77acb66f..9055a938132bb948146c45e0974e6909d9f3bfcc 100644 (file)
--- a/src/backend/utils/adt/like_match.c
+++ b/src/backend/utils/adt/like_match.c
@@ -76,7 +76,7 @@
 #endif
 
 static int
-MatchText(char *t, int tlen, char *p, int plen,
+MatchText(const char *t, int tlen, const char *p, int plen,
          pg_locale_t locale, bool locale_is_c)
 {
    /* Fast path for match-everything pattern */