Add numeric_int8_opt_error() to optionally suppress errors

This matches the existing numeric_int4_opt_error() (see commit
16d489b0fe).  It will be used by a future JSON-related patch, which
wants to report errors in its own way and thus does not want the
internal functions to throw any error.

Author: Jeevan Chalke <jeevan.chalke@enterprisedb.com>
Discussion: https://www.postgresql.org/message-id/flat/CAM2+6=XjTyqrrqHAOj80r0wVQxJSxc0iyib9bPC55uFO9VKatg@mail.gmail.com

diff --git a/src/backend/utils/adt/numeric.c b/src/backend/utils/adt/numeric.c
index bf61fd7dbc09f6ede5799b0eaa00c306e31a1aa1..2a2969094924dc46d65a605a3b37aa1f3e9293f2 100644 (file)
--- a/src/backend/utils/adt/numeric.c
+++ b/src/backend/utils/adt/numeric.c
@@ -4430,35 +4430,62 @@ int8_numeric(PG_FUNCTION_ARGS)
        PG_RETURN_NUMERIC(int64_to_numeric(val));
 }
 
-
-Datum
-numeric_int8(PG_FUNCTION_ARGS)
+int64
+numeric_int8_opt_error(Numeric num, bool *have_error)
 {
-       Numeric         num = PG_GETARG_NUMERIC(0);
        NumericVar      x;
        int64           result;
 
+       if (have_error)
+               *have_error = false;
+
        if (NUMERIC_IS_SPECIAL(num))
        {
-               if (NUMERIC_IS_NAN(num))
-                       ereport(ERROR,
-                                       (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-                                        errmsg("cannot convert NaN to %s", "bigint")));
+               if (have_error)
+               {
+                       *have_error = true;
+                       return 0;
+               }
                else
-                       ereport(ERROR,
-                                       (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-                                        errmsg("cannot convert infinity to %s", "bigint")));
+               {
+                       if (NUMERIC_IS_NAN(num))
+                               ereport(ERROR,
+                                               (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+                                                errmsg("cannot convert NaN to %s", "bigint")));
+                       else
+                               ereport(ERROR,
+                                               (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+                                                errmsg("cannot convert infinity to %s", "bigint")));
+               }
        }
 
-       /* Convert to variable format and thence to int8 */
+       /* Convert to variable format, then convert to int8 */
        init_var_from_num(num, &x);
 
        if (!numericvar_to_int64(&x, &result))
-               ereport(ERROR,
-                               (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
-                                errmsg("bigint out of range")));
+       {
+               if (have_error)
+               {
+                       *have_error = true;
+                       return 0;
+               }
+               else
+               {
+                       ereport(ERROR,
+                                       (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
+                                        errmsg("bigint out of range")));
+               }
+       }
+
+       return result;
+}
+
+Datum
+numeric_int8(PG_FUNCTION_ARGS)
+{
+       Numeric         num = PG_GETARG_NUMERIC(0);
 
-       PG_RETURN_INT64(result);
+       PG_RETURN_INT64(numeric_int8_opt_error(num, NULL));
 }
 
 

diff --git a/src/include/utils/numeric.h b/src/include/utils/numeric.h
index 08e4f8c217de7221ad8da8d0f156a9f2e03b9c65..0780b52094d32384e4f93c806698d09c0cc92e1c 100644 (file)
--- a/src/include/utils/numeric.h
+++ b/src/include/utils/numeric.h
@@ -101,5 +101,6 @@ extern Numeric numeric_div_opt_error(Numeric num1, Numeric num2,
 extern Numeric numeric_mod_opt_error(Numeric num1, Numeric num2,
                                                                         bool *have_error);
 extern int32 numeric_int4_opt_error(Numeric num, bool *have_error);
+extern int64 numeric_int8_opt_error(Numeric num, bool *have_error);
 
 #endif                                                 /* _PG_NUMERIC_H_ */