Implemented SP CONDITIONs and HANDLERs, with the extension of handling

MySQL error codes as well.
(No UNDO HANDLERs yet, and no SIGNAL or RESIGNAL.)
WL#850


Docs/sp-imp-spec.txt:
  Spec of CONDITIONs and HANDLERs (and updated some old stuff too).
Docs/sp-implemented.txt:
  Updated info about caching, CONDITIONs and HANDLERs.
include/mysqld_error.h:
  New error for undeclared CONDITION.
libmysqld/Makefile.am:
  New file: sp_rcontext.cc.
mysql-test/r/sp-error.result:
  New tests for CONDITIONs and HANDLERs.
mysql-test/r/sp.result:
  New tests for CONDITIONs and HANDLERs.
mysql-test/t/sp-error.test:
  New tests for CONDITIONs and HANDLERs.
mysql-test/t/sp.test:
  New tests for CONDITIONs and HANDLERs.
sql/Makefile.am:
  New file: sp_rcontext.cc.
sql/lex.h:
  New symbols for CONDITIONs, HANDLERs and CURSORs.
sql/mysqld.cc:
  Catch error if we have a handler for it.
sql/protocol.cc:
  Catch error if we have a handler for it.
sql/share/czech/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/danish/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/dutch/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/english/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/estonian/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/french/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/german/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/greek/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/hungarian/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/italian/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/japanese/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/korean/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/norwegian-ny/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/norwegian/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/polish/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/portuguese/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/romanian/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/russian/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/serbian/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/slovak/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/spanish/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/swedish/errmsg.txt:
  New error for undeclared CONDITION.
sql/share/ukrainian/errmsg.txt:
  New error for undeclared CONDITION.
sql/sp_head.cc:
  New HANDLER code.
sql/sp_head.h:
  New HANDLER code.
sql/sp_pcontext.cc:
  New CONDITION and HANDLER code.
sql/sp_pcontext.h:
  New CONDITION and HANDLER code.
sql/sp_rcontext.h:
  New CONDITION and HANDLER code.
sql/sql_yacc.yy:
  New CONDITION and HANDLER code.

1 files changed, 46 insertions, 4 deletions

diff --git a/sql/sp_pcontext.cc b/sql/sp_pcontext.cc
index 3973f05b74b..a192d78b9a3 100644
--- a/sql/sp_pcontext.cc
+++ b/sql/sp_pcontext.cc
@@ -27,9 +27,10 @@
 #include "sp_head.h"
 
 sp_pcontext::sp_pcontext()
-  : Sql_alloc(), m_params(0), m_framesize(0), m_genlab(0)
+  : Sql_alloc(), m_params(0), m_framesize(0), m_handlers(0), m_genlab(0)
 {
   VOID(my_init_dynamic_array(&m_pvar, sizeof(sp_pvar_t *), 16, 8));
+  VOID(my_init_dynamic_array(&m_cond, sizeof(sp_cond_type_t *), 16, 8));
   m_label.empty();
 }
 
@@ -37,6 +38,7 @@ void
 sp_pcontext::destroy()
 {
   delete_dynamic(&m_pvar);
+  delete_dynamic(&m_cond);
   m_label.empty();
 }
 
@@ -55,8 +57,9 @@ sp_pcontext::find_pvar(LEX_STRING *name)
 
   while (i-- > 0)
   {
-    sp_pvar_t *p= find_pvar(i);
+    sp_pvar_t *p;
 
+    get_dynamic(&m_pvar, (gptr)&p, i);
     if (my_strnncoll(system_charset_info,
 		     (const uchar *)name->str, name->length,
 		     (const uchar *)p->name.str, p->name.length) == 0)
@@ -68,8 +71,8 @@ sp_pcontext::find_pvar(LEX_STRING *name)
 }
 
 void
-sp_pcontext::push(LEX_STRING *name, enum enum_field_types type,
-		  sp_param_mode_t mode)
+sp_pcontext::push_pvar(LEX_STRING *name, enum enum_field_types type,
+		       sp_param_mode_t mode)
 {
   sp_pvar_t *p= (sp_pvar_t *)sql_alloc(sizeof(sp_pvar_t));
 
@@ -113,3 +116,42 @@ sp_pcontext::find_label(char *name)
 
   return NULL;
 }
+
+void
+sp_pcontext::push_cond(LEX_STRING *name, sp_cond_type_t *val)
+{
+  sp_cond_t *p= (sp_cond_t *)sql_alloc(sizeof(sp_cond_t));
+
+  if (p)
+  {
+    if (m_cond.elements == m_framesize)
+      m_framesize += 1;
+    p->name.str= name->str;
+    p->name.length= name->length;
+    p->val= val;
+    insert_dynamic(&m_cond, (gptr)&p);
+  }
+}
+
+/*
+ * See comment for find_pvar() above
+ */
+sp_cond_type_t *
+sp_pcontext::find_cond(LEX_STRING *name)
+{
+  uint i = m_cond.elements;
+
+  while (i-- > 0)
+  {
+    sp_cond_t *p;
+
+    get_dynamic(&m_cond, (gptr)&p, i);
+    if (my_strnncoll(system_charset_info,
+		     (const uchar *)name->str, name->length,
+		     (const uchar *)p->name.str, p->name.length) == 0)
+    {
+      return p->val;
+    }
+  }
+  return NULL;
+}