/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/ecpg.trailer,v 1.9.2.1 2009/11/21 05:44:12 tgl Exp $ */

statements: /*EMPTY*/
                | statements statement
                ;

statement: ecpgstart at stmt ';'        { connection = NULL; }
                | ecpgstart stmt ';'
                | ecpgstart ECPGVarDeclaration
                {
                        fprintf(yyout, "%s", $2);
                        free($2);
                        output_line_number();
                }
                | ECPGDeclaration
                | c_thing               { fprintf(yyout, "%s", $1); free($1); }
                | CPP_LINE              { fprintf(yyout, "%s", $1); free($1); }
                | '{'                   { braces_open++; fputs("{", yyout); }
                | '}'                   { remove_typedefs(braces_open); remove_variables(braces_open--); fputs("}", yyout); }
                ;

CreateAsStmt: CREATE OptTemp TABLE create_as_target AS {FoundInto = 0;} SelectStmt opt_with_data
		{
			if (FoundInto == 1)
				mmerror(PARSE_ERROR, ET_ERROR, "CREATE TABLE AS cannot specify INTO");

			$$ = cat_str(6, make_str("create"), $2, make_str("table"), $4, make_str("as"), $7);
		}
	;

RuleStmt: CREATE opt_or_replace RULE name AS
		{QueryIsRule = 1;}
		ON event TO qualified_name where_clause
		DO opt_instead RuleActionList
		{
			QueryIsRule=0;
			$$ = cat_str(12, make_str("create"), $2, make_str("rule"), $4, make_str("as on"), $8, make_str("to"), $10, $11, make_str("do"), $13, $14);
		}
	;

at: AT connection_object
                {
                        connection = $2;
                        /*
                         *      Do we have a variable as connection target?
                         *      Remove the variable from the variable
                         *      list or else it will be used twice
                         */
                        if (argsinsert != NULL)
                                argsinsert = NULL;
                }
        ;

/*
 * the exec sql connect statement: connect to the given database
 */
ECPGConnect: SQL_CONNECT TO connection_target opt_connection_name opt_user
			{ $$ = cat_str(5, $3, make_str(","), $5, make_str(","), $4); }
		| SQL_CONNECT TO DEFAULT
			{ $$ = make_str("NULL, NULL, NULL, \"DEFAULT\""); }
		  /* also allow ORACLE syntax */
		| SQL_CONNECT ora_user
			{ $$ = cat_str(3, make_str("NULL,"), $2, make_str(", NULL")); }
		| DATABASE connection_target
			{ $$ = cat2_str($2, make_str(", NULL, NULL, NULL")); }
		;

connection_target: opt_database_name opt_server opt_port
		{
			/* old style: dbname[@server][:port] */
			if (strlen($2) > 0 && *($2) != '@')
				mmerror(PARSE_ERROR, ET_ERROR, "expected \"@\", found \"%s\"", $2);
			
			/* C strings need to be handled differently */
			if ($1[0] == '\"')
				$$ = $1;
			else
				$$ = make3_str(make_str("\""), make3_str($1, $2, $3), make_str("\""));
		}
		|  db_prefix ':' server opt_port '/' opt_database_name opt_options
		{
			/* new style: <tcp|unix>:postgresql://server[:port][/dbname] */
			if (strncmp($1, "unix:postgresql", strlen("unix:postgresql")) != 0 && strncmp($1, "tcp:postgresql", strlen("tcp:postgresql")) != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "only protocols \"tcp\" and \"unix\" and database type \"postgresql\" are supported");

			if (strncmp($3, "//", strlen("//")) != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "expected \"://\", found \"%s\"", $3);

			if (strncmp($1, "unix", strlen("unix")) == 0 &&
				strncmp($3 + strlen("//"), "localhost", strlen("localhost")) != 0 &&
				strncmp($3 + strlen("//"), "127.0.0.1", strlen("127.0.0.1")) != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "Unix-domain sockets only work on \"localhost\" but not on \"%s\"", $3 + strlen("//"));

			$$ = make3_str(make3_str(make_str("\""), $1, make_str(":")), $3, make3_str(make3_str($4, make_str("/"), $6),	$7, make_str("\"")));
		}
		| char_variable
		{
			$$ = $1;
		}
		| ecpg_sconst
		{
			/* We can only process double quoted strings not single quotes ones,
			 * so we change the quotes.
			 * Note, that the rule for ecpg_sconst adds these single quotes. */
			$1[0] = '\"';
			$1[strlen($1)-1] = '\"';
			$$ = $1;
		}
		;

opt_database_name: database_name		{ $$ = $1; }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

db_prefix: ecpg_ident cvariable
		{
			if (strcmp($2, "postgresql") != 0 && strcmp($2, "postgres") != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "expected \"postgresql\", found \"%s\"", $2);

			if (strcmp($1, "tcp") != 0 && strcmp($1, "unix") != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "invalid connection type: %s", $1);

			$$ = make3_str($1, make_str(":"), $2);
		}
		;

server: Op server_name
		{
			if (strcmp($1, "@") != 0 && strcmp($1, "//") != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "expected \"@\" or \"://\", found \"%s\"", $1);

			$$ = make2_str($1, $2);
		}
		;

opt_server: server			{ $$ = $1; }
		| /*EMPTY*/			{ $$ = EMPTY; }
		;

server_name: ColId					{ $$ = $1; }
		| ColId '.' server_name		{ $$ = make3_str($1, make_str("."), $3); }
		| IP						{ $$ = make_name(); }
		;

opt_port: ':' Iconst		{ $$ = make2_str(make_str(":"), $2); }
		| /*EMPTY*/	{ $$ = EMPTY; }
		;

opt_connection_name: AS connection_object	{ $$ = $2; }
		| /*EMPTY*/			{ $$ = make_str("NULL"); }
		;

opt_user: USER ora_user		{ $$ = $2; }
		| /*EMPTY*/			{ $$ = make_str("NULL, NULL"); }
		;

ora_user: user_name
			{ $$ = cat2_str($1, make_str(", NULL")); }
		| user_name '/' user_name
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		| user_name SQL_IDENTIFIED BY user_name
			{ $$ = cat_str(3, $1, make_str(","), $4); }
		| user_name USING user_name
			{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

user_name: RoleId
		{
			if ($1[0] == '\"')
				$$ = $1;
			else
				$$ = make3_str(make_str("\""), $1, make_str("\""));
		}
		| ecpg_sconst
		{
			if ($1[0] == '\"')
				$$ = $1;
			else
				$$ = make3_str(make_str("\""), $1, make_str("\""));
		}
		| civar
		{
			enum ECPGttype type = argsinsert->variable->type->type;

			/* if array see what's inside */
			if (type == ECPGt_array)
				type = argsinsert->variable->type->u.element->type;

			/* handle varchars */
			if (type == ECPGt_varchar)
				$$ = make2_str(mm_strdup(argsinsert->variable->name), make_str(".arr"));
			else
				$$ = mm_strdup(argsinsert->variable->name);
		}
		;

char_variable: cvariable
		{
			/* check if we have a string variable */
			struct variable *p = find_variable($1);
			enum ECPGttype type = p->type->type;

			/* If we have just one character this is not a string */
			if (atol(p->type->size) == 1)
					mmerror(PARSE_ERROR, ET_ERROR, "invalid data type");
			else
			{
				/* if array see what's inside */
				if (type == ECPGt_array)
					type = p->type->u.element->type;

				switch (type)
				{
					case ECPGt_char:
					case ECPGt_unsigned_char:
						$$ = $1;
						break;
					case ECPGt_varchar:
						$$ = make2_str($1, make_str(".arr"));
						break;
					default:
						mmerror(PARSE_ERROR, ET_ERROR, "invalid data type");
						$$ = $1;
						break;
				}
			}
		}
		;

opt_options: Op connect_options
		{
			if (strlen($1) == 0)
				mmerror(PARSE_ERROR, ET_ERROR, "incomplete statement");

			if (strcmp($1, "?") != 0)
				mmerror(PARSE_ERROR, ET_ERROR, "unrecognized token \"%s\"", $1);

			$$ = make2_str(make_str("?"), $2);
		}
		| /*EMPTY*/ 	{ $$ = EMPTY; }
		;

connect_options:  ColId opt_opt_value 
			{ $$ = make2_str($1, $2); }
	| ColId opt_opt_value Op connect_options
			{
				if (strlen($3) == 0)
					mmerror(PARSE_ERROR, ET_ERROR, "incomplete statement");

				if (strcmp($3, "&") != 0)
					mmerror(PARSE_ERROR, ET_ERROR, "unrecognized token \"%s\"", $3);

				$$ = cat_str(3, make2_str($1, $2), $3, $4);
			}
	;

opt_opt_value: /*EMPTY*/
			{ $$ = EMPTY; }
		| '=' Iconst
			{ $$ = make2_str(make_str("="), $2); }
		| '=' ecpg_ident
			{ $$ = make2_str(make_str("="), $2); }
		| '=' civar
			{ $$ = make2_str(make_str("="), $2); }
		;

prepared_name: name             {
                                        if ($1[0] == '\"' && $1[strlen($1)-1] == '\"') /* already quoted? */
                                                $$ = $1;
                                        else /* not quoted => convert to lowercase */
                                        {
                                                int i;

                                                for (i = 0; i< strlen($1); i++)
                                                        $1[i] = tolower((unsigned char) $1[i]);

                                                $$ = make3_str(make_str("\""), $1, make_str("\""));
                                        }
                                }
                | char_variable { $$ = $1; }
                ;

/*
 * Declare a prepared cursor. The syntax is different from the standard
 * declare statement, so we create a new rule.
 */
ECPGCursorStmt:  DECLARE name cursor_options CURSOR opt_hold FOR prepared_name
		{
			struct cursor *ptr, *this;
			struct variable *thisquery = (struct variable *)mm_alloc(sizeof(struct variable));
			const char *con = connection ? connection : "NULL";

			for (ptr = cur; ptr != NULL; ptr = ptr->next)
			{
				if (strcmp($2, ptr->name) == 0)
					/* re-definition is a bug */
					mmerror(PARSE_ERROR, ET_ERROR, "cursor \"%s\" is already defined", $2);
			}

			this = (struct cursor *) mm_alloc(sizeof(struct cursor));

			/* initial definition */
			this->next = cur;
			this->name = $2;
			this->connection = connection;
			this->command =  cat_str(6, make_str("declare"), mm_strdup($2), $3, make_str("cursor"), $5, make_str("for $1"));
			this->argsresult = NULL;

			thisquery->type = &ecpg_query;
			thisquery->brace_level = 0;
			thisquery->next = NULL;
			thisquery->name = (char *) mm_alloc(sizeof("ECPGprepared_statement(, , __LINE__)") + strlen(con) + strlen($7));
			sprintf(thisquery->name, "ECPGprepared_statement(%s, %s, __LINE__)", con, $7);

			this->argsinsert = NULL;
			add_variable_to_head(&(this->argsinsert), thisquery, &no_indicator);

			cur = this;

			$$ = cat_str(3, make_str("/*"), mm_strdup(this->command), make_str("*/"));
		}
		;

ECPGExecuteImmediateStmt: EXECUTE IMMEDIATE execstring
			{ 
			  /* execute immediate means prepare the statement and
			   * immediately execute it */
			  $$ = $3;
			};
/*
 * variable decalartion outside exec sql declare block
 */
ECPGVarDeclaration: single_vt_declaration;

single_vt_declaration: type_declaration		{ $$ = $1; }
		| var_declaration		{ $$ = $1; }
		;

precision:	NumericOnly	{ $$ = $1; };

opt_scale:	',' NumericOnly	{ $$ = $2; }
		| /* EMPTY */	{ $$ = EMPTY; }
		;

ecpg_interval:	opt_interval	{ $$ = $1; }
		| YEAR_P TO MINUTE_P	{ $$ = make_str("year to minute"); }
		| YEAR_P TO SECOND_P	{ $$ = make_str("year to second"); }
		| DAY_P TO DAY_P		{ $$ = make_str("day to day"); }
		| MONTH_P TO MONTH_P	{ $$ = make_str("month to month"); }
		;

/*
 * variable declaration inside exec sql declare block
 */
ECPGDeclaration: sql_startdeclare
		{ fputs("/* exec sql begin declare section */", yyout); }
		var_type_declarations sql_enddeclare
		{
			fprintf(yyout, "%s/* exec sql end declare section */", $3);
			free($3);
			output_line_number();
		}
		;

sql_startdeclare: ecpgstart BEGIN_P DECLARE SQL_SECTION ';' {};

sql_enddeclare: ecpgstart END_P DECLARE SQL_SECTION ';' {};

var_type_declarations:	/*EMPTY*/			{ $$ = EMPTY; }
		| vt_declarations			{ $$ = $1; }
		| CPP_LINE				{ $$ = $1; }
		;

vt_declarations:  var_declaration			{ $$ = $1; }
		| type_declaration			{ $$ = $1; }
		| vt_declarations var_declaration	{ $$ = cat2_str($1, $2); }
		| vt_declarations type_declaration	{ $$ = cat2_str($1, $2); }
		| vt_declarations CPP_LINE		{ $$ = cat2_str($1, $2); }
		;

variable_declarations:	var_declaration 	{ $$ = $1; }
		| variable_declarations var_declaration 	{ $$ = cat2_str($1, $2); }
		;

type_declaration: S_TYPEDEF
	{
		/* reset this variable so we see if there was */
		/* an initializer specified */
		initializer = 0;
	}
	var_type opt_pointer ECPGColLabelCommon opt_array_bounds ';'
	{
		add_typedef($5, $6.index1, $6.index2, $3.type_enum, $3.type_dimension, $3.type_index, initializer, *$4 ? 1 : 0);

		fprintf(yyout, "typedef %s %s %s %s;\n", $3.type_str, *$4 ? "*" : "", $5, $6.str);
		output_line_number();
		$$ = make_str("");
	};

var_declaration: storage_declaration
		var_type
		{
			actual_type[struct_level].type_enum = $2.type_enum;
			actual_type[struct_level].type_dimension = $2.type_dimension;
			actual_type[struct_level].type_index = $2.type_index;
			actual_type[struct_level].type_sizeof = $2.type_sizeof;

			actual_startline[struct_level] = hashline_number();
		}
		variable_list ';'
		{
			$$ = cat_str(5, actual_startline[struct_level], $1, $2.type_str, $4, make_str(";\n"));
		}
		| var_type
		{
			actual_type[struct_level].type_enum = $1.type_enum;
			actual_type[struct_level].type_dimension = $1.type_dimension;
			actual_type[struct_level].type_index = $1.type_index;
			actual_type[struct_level].type_sizeof = $1.type_sizeof;

			actual_startline[struct_level] = hashline_number();
		}
		variable_list ';'
		{
			$$ = cat_str(4, actual_startline[struct_level], $1.type_str, $3, make_str(";\n"));
		}
		| struct_union_type_with_symbol ';'
		{
			$$ = cat2_str($1, make_str(";"));
		}
		;

opt_bit_field:	':' Iconst	{ $$ =cat2_str(make_str(":"), $2); }
		| /* EMPTY */	{ $$ = EMPTY; }
		;

storage_declaration: storage_clause storage_modifier
			{$$ = cat2_str ($1, $2); }
		| storage_clause		{$$ = $1; }
		| storage_modifier		{$$ = $1; }
		;

storage_clause : S_EXTERN	{ $$ = make_str("extern"); }
		| S_STATIC			{ $$ = make_str("static"); }
		| S_REGISTER		{ $$ = make_str("register"); }
		| S_AUTO			{ $$ = make_str("auto"); }
		;

storage_modifier : S_CONST	{ $$ = make_str("const"); }
		| S_VOLATILE		{ $$ = make_str("volatile"); }
		;

var_type:	simple_type
		{
			$$.type_enum = $1;
			$$.type_str = mm_strdup(ecpg_type_name($1));
			$$.type_dimension = make_str("-1");
			$$.type_index = make_str("-1");
			$$.type_sizeof = NULL;
		}
		| struct_union_type
		{
			$$.type_str = $1;
			$$.type_dimension = make_str("-1");
			$$.type_index = make_str("-1");

			if (strncmp($1, "struct", sizeof("struct")-1) == 0)
			{
				$$.type_enum = ECPGt_struct;
				$$.type_sizeof = ECPGstruct_sizeof;
			}
			else
			{
				$$.type_enum = ECPGt_union;
				$$.type_sizeof = NULL;
			}
		}
		| enum_type
		{
			$$.type_str = $1;
			$$.type_enum = ECPGt_int;
			$$.type_dimension = make_str("-1");
			$$.type_index = make_str("-1");
			$$.type_sizeof = NULL;
		}
		| ECPGColLabelCommon '(' precision opt_scale ')'
		{
			if (strcmp($1, "numeric") == 0)
			{
				$$.type_enum = ECPGt_numeric;
				$$.type_str = make_str("numeric");
			}
			else if (strcmp($1, "decimal") == 0)
			{
				$$.type_enum = ECPGt_decimal;
				$$.type_str = make_str("decimal");
			}
			else
			{
				mmerror(PARSE_ERROR, ET_ERROR, "only data types numeric and decimal have precision/scale argument");
				$$.type_enum = ECPGt_numeric;
				$$.type_str = make_str("numeric");
			}

			$$.type_dimension = make_str("-1");
			$$.type_index = make_str("-1");
			$$.type_sizeof = NULL;
		}
		| ECPGColLabelCommon ecpg_interval
		{
			if (strlen($2) != 0 && strcmp ($1, "datetime") != 0 && strcmp ($1, "interval") != 0)
				mmerror (PARSE_ERROR, ET_ERROR, "interval specification not allowed here");

			/*
			 * Check for type names that the SQL grammar treats as
			 * unreserved keywords
			 */
			if (strcmp($1, "varchar") == 0)
			{
				$$.type_enum = ECPGt_varchar;
				$$.type_str = EMPTY; /*make_str("varchar");*/
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "float") == 0)
			{
				$$.type_enum = ECPGt_float;
				$$.type_str = make_str("float");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "double") == 0)
			{
				$$.type_enum = ECPGt_double;
				$$.type_str = make_str("double");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "numeric") == 0)
			{
				$$.type_enum = ECPGt_numeric;
				$$.type_str = make_str("numeric");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "decimal") == 0)
			{
				$$.type_enum = ECPGt_decimal;
				$$.type_str = make_str("decimal");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "date") == 0)
			{
				$$.type_enum = ECPGt_date;
				$$.type_str = make_str("date");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "timestamp") == 0)
			{
				$$.type_enum = ECPGt_timestamp;
				$$.type_str = make_str("timestamp");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "interval") == 0)
			{
				$$.type_enum = ECPGt_interval;
				$$.type_str = make_str("interval");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else if (strcmp($1, "datetime") == 0)
			{
				$$.type_enum = ECPGt_timestamp;
				$$.type_str = make_str("timestamp");
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = NULL;
			}
			else
			{
				/* this is for typedef'ed types */
				struct typedefs *this = get_typedef($1);

				$$.type_str = (this->type->type_enum == ECPGt_varchar) ? EMPTY : mm_strdup(this->name);
				$$.type_enum = this->type->type_enum;
				$$.type_dimension = this->type->type_dimension;
				$$.type_index = this->type->type_index;
				if (this->type->type_sizeof && strlen(this->type->type_sizeof) != 0)
					$$.type_sizeof = this->type->type_sizeof;
				else 
					$$.type_sizeof = cat_str(3, make_str("sizeof("), mm_strdup(this->name), make_str(")"));

				struct_member_list[struct_level] = ECPGstruct_member_dup(this->struct_member_list);
			}
		}
		| s_struct_union_symbol
		{
			/* this is for named structs/unions */
			char *name;
			struct typedefs *this;
			bool forward = (forward_name != NULL && strcmp($1.symbol, forward_name) == 0 && strcmp($1.su, "struct") == 0);

			name = cat2_str($1.su, $1.symbol);
			/* Do we have a forward definition? */
			if (!forward)
			{
				/* No */

				this = get_typedef(name);
				$$.type_str = mm_strdup(this->name);
				$$.type_enum = this->type->type_enum;
				$$.type_dimension = this->type->type_dimension;
				$$.type_index = this->type->type_index;
				$$.type_sizeof = this->type->type_sizeof;
				struct_member_list[struct_level] = ECPGstruct_member_dup(this->struct_member_list);
				free(name);
			}
			else
			{
				$$.type_str = name;
				$$.type_enum = ECPGt_long;
				$$.type_dimension = make_str("-1");
				$$.type_index = make_str("-1");
				$$.type_sizeof = make_str("");
				struct_member_list[struct_level] = NULL;
			}
		}
		;

enum_type: ENUM_P symbol enum_definition
			{ $$ = cat_str(3, make_str("enum"), $2, $3); }
		| ENUM_P enum_definition
			{ $$ = cat2_str(make_str("enum"), $2); }
		| ENUM_P symbol
			{ $$ = cat2_str(make_str("enum"), $2); }
		;

enum_definition: '{' c_list '}'
			{ $$ = cat_str(3, make_str("{"), $2, make_str("}")); };

struct_union_type_with_symbol: s_struct_union_symbol
		{
			struct_member_list[struct_level++] = NULL;
			if (struct_level >= STRUCT_DEPTH)
				 mmerror(PARSE_ERROR, ET_ERROR, "too many levels in nested structure/union definition");
			forward_name = mm_strdup($1.symbol);
		}
		'{' variable_declarations '}'
		{
			struct typedefs *ptr, *this;
			struct this_type su_type;

			ECPGfree_struct_member(struct_member_list[struct_level]);
			struct_member_list[struct_level] = NULL;
			struct_level--;
			if (strncmp($1.su, "struct", sizeof("struct")-1) == 0)
				su_type.type_enum = ECPGt_struct;
			else
				su_type.type_enum = ECPGt_union;
			su_type.type_str = cat2_str($1.su, $1.symbol);
			free(forward_name);
			forward_name = NULL;

			/* This is essantially a typedef but needs the keyword struct/union as well.
			 * So we create the typedef for each struct definition with symbol */
			for (ptr = types; ptr != NULL; ptr = ptr->next)
			{
					if (strcmp(su_type.type_str, ptr->name) == 0)
							/* re-definition is a bug */
							mmerror(PARSE_ERROR, ET_ERROR, "type \"%s\" is already defined", su_type.type_str);
			}

			this = (struct typedefs *) mm_alloc(sizeof(struct typedefs));

			/* initial definition */
			this->next = types;
			this->name = mm_strdup(su_type.type_str);
			this->brace_level = braces_open;
			this->type = (struct this_type *) mm_alloc(sizeof(struct this_type));
			this->type->type_enum = su_type.type_enum;
			this->type->type_str = mm_strdup(su_type.type_str);
			this->type->type_dimension = make_str("-1"); /* dimension of array */
			this->type->type_index = make_str("-1");	/* length of string */
			this->type->type_sizeof = ECPGstruct_sizeof;
			this->struct_member_list = struct_member_list[struct_level];

			types = this;
			$$ = cat_str(4, su_type.type_str, make_str("{"), $4, make_str("}"));
		}
		;

struct_union_type: struct_union_type_with_symbol	{ $$ = $1; }
		| s_struct_union
		{
			struct_member_list[struct_level++] = NULL;
			if (struct_level >= STRUCT_DEPTH)
				 mmerror(PARSE_ERROR, ET_ERROR, "too many levels in nested structure/union definition");
		}
		'{' variable_declarations '}'
		{
			ECPGfree_struct_member(struct_member_list[struct_level]);
			struct_member_list[struct_level] = NULL;
			struct_level--;
			$$ = cat_str(4, $1, make_str("{"), $4, make_str("}"));
		}
		;

s_struct_union_symbol: SQL_STRUCT symbol
		{
			$$.su = make_str("struct");
			$$.symbol = $2;
			ECPGstruct_sizeof = cat_str(3, make_str("sizeof("), cat2_str(mm_strdup($$.su), mm_strdup($$.symbol)), make_str(")"));
		}
		| UNION symbol
		{
			$$.su = make_str("union");
			$$.symbol = $2;
		}
		;

s_struct_union: SQL_STRUCT
		{
			ECPGstruct_sizeof = make_str(""); /* This must not be NULL to distinguish from simple types. */
			$$ = make_str("struct");
		}
		| UNION 	{ $$ = make_str("union"); }
		;

simple_type: unsigned_type					{ $$=$1; }
		|	opt_signed signed_type			{ $$=$2; }
		;

unsigned_type: SQL_UNSIGNED SQL_SHORT		{ $$ = ECPGt_unsigned_short; }
		| SQL_UNSIGNED SQL_SHORT INT_P	{ $$ = ECPGt_unsigned_short; }
		| SQL_UNSIGNED						{ $$ = ECPGt_unsigned_int; }
		| SQL_UNSIGNED INT_P				{ $$ = ECPGt_unsigned_int; }
		| SQL_UNSIGNED SQL_LONG				{ $$ = ECPGt_unsigned_long; }
		| SQL_UNSIGNED SQL_LONG INT_P		{ $$ = ECPGt_unsigned_long; }
		| SQL_UNSIGNED SQL_LONG SQL_LONG
		{
#ifdef HAVE_LONG_LONG_INT_64
			$$ = ECPGt_unsigned_long_long;
#else
			$$ = ECPGt_unsigned_long;
#endif
		}
		| SQL_UNSIGNED SQL_LONG SQL_LONG INT_P
		{
#ifdef HAVE_LONG_LONG_INT_64
			$$ = ECPGt_unsigned_long_long;
#else
			$$ = ECPGt_unsigned_long;
#endif
		}
		| SQL_UNSIGNED CHAR_P			{ $$ = ECPGt_unsigned_char; }
		;

signed_type: SQL_SHORT				{ $$ = ECPGt_short; }
		| SQL_SHORT INT_P			{ $$ = ECPGt_short; }
		| INT_P						{ $$ = ECPGt_int; }
		| SQL_LONG					{ $$ = ECPGt_long; }
		| SQL_LONG INT_P			{ $$ = ECPGt_long; }
		| SQL_LONG SQL_LONG
		{
#ifdef HAVE_LONG_LONG_INT_64
			$$ = ECPGt_long_long;
#else
			$$ = ECPGt_long;
#endif
		}
		| SQL_LONG SQL_LONG INT_P
		{
#ifdef HAVE_LONG_LONG_INT_64
			$$ = ECPGt_long_long;
#else
			$$ = ECPGt_long;
#endif
		}
		| SQL_BOOL					{ $$ = ECPGt_bool; }
		| CHAR_P					{ $$ = ECPGt_char; }
		| DOUBLE_P					{ $$ = ECPGt_double; }
		;

opt_signed: SQL_SIGNED
		|	/* EMPTY */
		;

variable_list: variable
			{ $$ = $1; }
		| variable_list ',' variable
		{
			if (actual_type[struct_level].type_enum == ECPGt_varchar)
				$$ = cat_str(3, $1, make_str(";"), $3);
			else
				$$ = cat_str(3, $1, make_str(","), $3);
		}
		;

variable: opt_pointer ECPGColLabel opt_array_bounds opt_bit_field opt_initializer
		{
			struct ECPGtype * type;
			char *dimension = $3.index1; /* dimension of array */
			char *length = $3.index2;    /* length of string */
			char dim[14L];
			char *vcn;

			adjust_array(actual_type[struct_level].type_enum, &dimension, &length, actual_type[struct_level].type_dimension, actual_type[struct_level].type_index, strlen($1), false);

			switch (actual_type[struct_level].type_enum)
			{
				case ECPGt_struct:
				case ECPGt_union:
					if (atoi(dimension) < 0)
						type = ECPGmake_struct_type(struct_member_list[struct_level], actual_type[struct_level].type_enum, actual_type[struct_level].type_sizeof);
					else
						type = ECPGmake_array_type(ECPGmake_struct_type(struct_member_list[struct_level], actual_type[struct_level].type_enum, actual_type[struct_level].type_sizeof), dimension);

					$$ = cat_str(5, $1, mm_strdup($2), $3.str, $4, $5);
					break;

				case ECPGt_varchar:
					if (atoi(dimension) < 0)
						type = ECPGmake_simple_type(actual_type[struct_level].type_enum, length, yylineno);
					else
						type = ECPGmake_array_type(ECPGmake_simple_type(actual_type[struct_level].type_enum, length, yylineno), dimension);
					
					if (strcmp(dimension, "0") == 0 || abs(atoi(dimension)) == 1)
							*dim = '\0';
					else
							sprintf(dim, "[%s]", dimension);
					/* cannot check for atoi <= 0 because a defined constant will yield 0 here as well */
					if (atoi(length) < 0 || strcmp(length, "0") == 0)
						mmerror(PARSE_ERROR, ET_ERROR, "pointers to varchar are not implemented");

					/* make sure varchar struct name is unique by adding linenumer of its definition */
					vcn = (char *) mm_alloc(strlen($2) + sizeof(int) * CHAR_BIT * 10 / 3);
					sprintf(vcn, "%s_%d", $2, yylineno);
					if (strcmp(dimension, "0") == 0)
						$$ = cat_str(7, make2_str(make_str(" struct varchar_"), vcn), make_str(" { int len; char arr["), mm_strdup(length), make_str("]; } *"), mm_strdup($2), $4, $5);
					else
						$$ = cat_str(8, make2_str(make_str(" struct varchar_"), vcn), make_str(" { int len; char arr["), mm_strdup(length), make_str("]; } "), mm_strdup($2), mm_strdup(dim), $4, $5);
					break;

				case ECPGt_char:
				case ECPGt_unsigned_char:
					if (atoi(dimension) == -1)
					{
						int i = strlen($5);

						if (atoi(length) == -1 && i > 0) /* char <var>[] = "string" */
						{
							/* if we have an initializer but no string size set, let's use the initializer's length */
							free(length);
							length = mm_alloc(i+sizeof("sizeof()"));
							sprintf(length, "sizeof(%s)", $5+2);
						}
						type = ECPGmake_simple_type(actual_type[struct_level].type_enum, length, 0);
					}
					else
						type = ECPGmake_array_type(ECPGmake_simple_type(actual_type[struct_level].type_enum, length, 0), dimension);

					$$ = cat_str(5, $1, mm_strdup($2), $3.str, $4, $5);
					break;

				default:
					if (atoi(dimension) < 0)
						type = ECPGmake_simple_type(actual_type[struct_level].type_enum, make_str("1"), 0);
					else
						type = ECPGmake_array_type(ECPGmake_simple_type(actual_type[struct_level].type_enum, make_str("1"), 0), dimension);

					$$ = cat_str(5, $1, mm_strdup($2), $3.str, $4, $5);
					break;
			}

			if (struct_level == 0)
				new_variable($2, type, braces_open);
			else
				ECPGmake_struct_member($2, type, &(struct_member_list[struct_level - 1]));

			free($2);
		}
		;

opt_initializer: /*EMPTY*/
			{ $$ = EMPTY; }
		| '=' c_term
		{
			initializer = 1;
			$$ = cat2_str(make_str("="), $2);
		}
		;

opt_pointer: /*EMPTY*/				{ $$ = EMPTY; }
		| '*'						{ $$ = make_str("*"); }
		| '*' '*'					{ $$ = make_str("**"); }
		;

/*
 * We try to simulate the correct DECLARE syntax here so we get dynamic SQL
 */
ECPGDeclare: DECLARE STATEMENT ecpg_ident
		{
			/* this is only supported for compatibility */
			$$ = cat_str(3, make_str("/* declare statement"), $3, make_str("*/"));
		}
		;
/*
 * the exec sql disconnect statement: disconnect from the given database
 */
ECPGDisconnect: SQL_DISCONNECT dis_name { $$ = $2; }
		;

dis_name: connection_object			{ $$ = $1; }
		| CURRENT_P			{ $$ = make_str("\"CURRENT\""); }
		| ALL				{ $$ = make_str("\"ALL\""); }
		| /* EMPTY */			{ $$ = make_str("\"CURRENT\""); }
		;

connection_object: database_name		{ $$ = make3_str(make_str("\""), $1, make_str("\"")); }
		| DEFAULT			{ $$ = make_str("\"DEFAULT\""); }
		| char_variable			{ $$ = $1; }
		;

execstring: char_variable
			{ $$ = $1; }
		|	CSTRING
			{ $$ = make3_str(make_str("\""), $1, make_str("\"")); }
		;

/*
 * the exec sql free command to deallocate a previously
 * prepared statement
 */
ECPGFree:	SQL_FREE name	{ $$ = $2; }
		| SQL_FREE ALL	{ $$ = make_str("all"); }
		;

/*
 * open is an open cursor, at the moment this has to be removed
 */
ECPGOpen: SQL_OPEN name opt_ecpg_using { $$ = $2; };

opt_ecpg_using: /*EMPTY*/	{ $$ = EMPTY; }
		| ecpg_using		{ $$ = $1; }
		;

ecpg_using:	USING using_list 	{ $$ = EMPTY; }
		| using_descriptor      { $$ = $1; }
		;

using_descriptor: USING opt_sql SQL_DESCRIPTOR quoted_ident_stringvar
		{
			add_variable_to_head(&argsinsert, descriptor_variable($4,0), &no_indicator);
			$$ = EMPTY;
		}
		;

into_descriptor: INTO opt_sql SQL_DESCRIPTOR quoted_ident_stringvar
		{
			add_variable_to_head(&argsresult, descriptor_variable($4,1), &no_indicator);
			$$ = EMPTY;
		}
		;

opt_sql: /*EMPTY*/ | SQL_SQL;

using_list: UsingValue | UsingValue ',' using_list;

UsingValue: UsingConst
		{
			char *length = mm_alloc(32);

			sprintf(length, "%d", (int) strlen($1));
			add_variable_to_head(&argsinsert, new_variable($1, ECPGmake_simple_type(ECPGt_const, length, 0), 0), &no_indicator);
		}
		| civar { $$ = EMPTY; }
		| civarind { $$ = EMPTY; }
		; 

UsingConst: Iconst			{ $$ = $1; }
		| '+' Iconst		{ $$ = cat_str(2, make_str("+"), $2); }
                | '-' Iconst		{ $$ = cat_str(2, make_str("-"), $2); }
		| ecpg_fconst		{ $$ = $1; }
		| '+' ecpg_fconst	{ $$ = cat_str(2, make_str("+"), $2); }
                | '-' ecpg_fconst	{ $$ = cat_str(2, make_str("-"), $2); }
		| ecpg_sconst		{ $$ = $1; }
		| ecpg_bconst		{ $$ = $1; }
		| ecpg_xconst		{ $$ = $1; }
		;

/*
 * We accept descibe but do nothing with it so far.
 */
ECPGDescribe: SQL_DESCRIBE INPUT_P name using_descriptor
	{
		const char *con = connection ? connection : "NULL";
		mmerror(PARSE_ERROR, ET_WARNING, "using unsupported DESCRIBE statement");
		$$ = (char *) mm_alloc(sizeof("1, ECPGprepared_statement(, \"\", __LINE__)") + strlen(con) + strlen($3));
		sprintf($$, "1, ECPGprepared_statement(%s, \"%s\", __LINE__)", con, $3);
	}
	| SQL_DESCRIBE opt_output name using_descriptor
	{
		const char *con = connection ? connection : "NULL";
		mmerror(PARSE_ERROR, ET_WARNING, "using unsupported DESCRIBE statement");
		$$ = (char *) mm_alloc(sizeof("0, ECPGprepared_statement(, \"\", __LINE__)") + strlen(con) + strlen($3));
		sprintf($$, "0, ECPGprepared_statement(%s, \"%s\", __LINE__)", con, $3);
	}
	| SQL_DESCRIBE opt_output name into_descriptor
	{
		const char *con = connection ? connection : "NULL";
		mmerror(PARSE_ERROR, ET_WARNING, "using unsupported DESCRIBE statement");
		$$ = (char *) mm_alloc(sizeof("0, ECPGprepared_statement(, \"\", __LINE__)") + strlen(con) + strlen($3));
		sprintf($$, "0, ECPGprepared_statement(%s, \"%s\", __LINE__)", con, $3);
	}
	;

opt_output:	SQL_OUTPUT	{ $$ = make_str("output"); }
	| 	/* EMPTY */	{ $$ = EMPTY; }
	;

/*
 * dynamic SQL: descriptor based access
 *	originall written by Christof Petig <christof.petig@wtal.de>
 *			and Peter Eisentraut <peter.eisentraut@credativ.de>
 */

/*
 * allocate a descriptor
 */
ECPGAllocateDescr:     SQL_ALLOCATE SQL_DESCRIPTOR quoted_ident_stringvar
		{
			add_descriptor($3,connection);
			$$ = $3;
		}
		;


/*
 * deallocate a descriptor
 */
ECPGDeallocateDescr:	DEALLOCATE SQL_DESCRIPTOR quoted_ident_stringvar
		{
			drop_descriptor($3,connection);
			$$ = $3;
		}
		;

/*
 * manipulate a descriptor header
 */

ECPGGetDescriptorHeader: SQL_GET SQL_DESCRIPTOR quoted_ident_stringvar ECPGGetDescHeaderItems
			{  $$ = $3; }
		;

ECPGGetDescHeaderItems: ECPGGetDescHeaderItem
		| ECPGGetDescHeaderItems ',' ECPGGetDescHeaderItem
		;

ECPGGetDescHeaderItem: cvariable '=' desc_header_item
			{ push_assignment($1, $3); }
		;


ECPGSetDescriptorHeader: SET SQL_DESCRIPTOR quoted_ident_stringvar ECPGSetDescHeaderItems
			{ $$ = $3; }
		;

ECPGSetDescHeaderItems: ECPGSetDescHeaderItem
		| ECPGSetDescHeaderItems ',' ECPGSetDescHeaderItem
		;

ECPGSetDescHeaderItem: desc_header_item '=' IntConstVar
		{
			push_assignment($3, $1);
		}
		;

IntConstVar:    Iconst
                {
                        char *length = mm_alloc(sizeof(int) * CHAR_BIT * 10 / 3);

                        sprintf(length, "%d", (int) strlen($1));
                        new_variable($1, ECPGmake_simple_type(ECPGt_const, length, 0), 0);
                        $$ = $1;
                }
                | cvariable     { $$ = $1; }
                ;

desc_header_item:	SQL_COUNT			{ $$ = ECPGd_count; }
		;

/*
 * manipulate a descriptor
 */

ECPGGetDescriptor:	SQL_GET SQL_DESCRIPTOR quoted_ident_stringvar VALUE_P IntConstVar ECPGGetDescItems
			{  $$.str = $5; $$.name = $3; }
		;

ECPGGetDescItems: ECPGGetDescItem
		| ECPGGetDescItems ',' ECPGGetDescItem
		;

ECPGGetDescItem: cvariable '=' descriptor_item	{ push_assignment($1, $3); };


ECPGSetDescriptor:	SET SQL_DESCRIPTOR quoted_ident_stringvar VALUE_P IntConstVar ECPGSetDescItems
			{  $$.str = $5; $$.name = $3; }
		;

ECPGSetDescItems: ECPGSetDescItem
		| ECPGSetDescItems ',' ECPGSetDescItem
		;

ECPGSetDescItem: descriptor_item '=' AllConstVar
		{
			push_assignment($3, $1);
		}
		;

AllConstVar:    ecpg_fconst
                {
                        char *length = mm_alloc(sizeof(int) * CHAR_BIT * 10 / 3);

                        sprintf(length, "%d", (int) strlen($1));
                        new_variable($1, ECPGmake_simple_type(ECPGt_const, length, 0), 0);
                        $$ = $1;
                }
                | IntConstVar           { $$ = $1; }
                | '-' ecpg_fconst
                {
                        char *length = mm_alloc(sizeof(int) * CHAR_BIT * 10 / 3);
                        char *var = cat2_str(make_str("-"), $2);

                        sprintf(length, "%d", (int) strlen(var));
                        new_variable(var, ECPGmake_simple_type(ECPGt_const, length, 0), 0);
                        $$ = var;
                }
                | '-' Iconst
                {
                        char *length = mm_alloc(sizeof(int) * CHAR_BIT * 10 / 3);
                        char *var = cat2_str(make_str("-"), $2);

                        sprintf(length, "%d", (int) strlen(var));
                        new_variable(var, ECPGmake_simple_type(ECPGt_const, length, 0), 0);
                        $$ = var;
                }
                | ecpg_sconst
                {
                        char *length = mm_alloc(sizeof(int) * CHAR_BIT * 10 / 3);
                        char *var = $1 + 1;

                        var[strlen(var) - 1] = '\0';
                        sprintf(length, "%d", (int) strlen(var));
                        new_variable(var, ECPGmake_simple_type(ECPGt_const, length, 0), 0);
                        $$ = var;
                }
		;

descriptor_item:	SQL_CARDINALITY			{ $$ = ECPGd_cardinality; }
		| DATA_P				{ $$ = ECPGd_data; }
		| SQL_DATETIME_INTERVAL_CODE		{ $$ = ECPGd_di_code; }
		| SQL_DATETIME_INTERVAL_PRECISION 	{ $$ = ECPGd_di_precision; }
		| SQL_INDICATOR				{ $$ = ECPGd_indicator; }
		| SQL_KEY_MEMBER			{ $$ = ECPGd_key_member; }
		| SQL_LENGTH				{ $$ = ECPGd_length; }
		| NAME_P				{ $$ = ECPGd_name; }
		| SQL_NULLABLE				{ $$ = ECPGd_nullable; }
		| SQL_OCTET_LENGTH			{ $$ = ECPGd_octet; }
		| PRECISION				{ $$ = ECPGd_precision; }
		| SQL_RETURNED_LENGTH			{ $$ = ECPGd_length; }
		| SQL_RETURNED_OCTET_LENGTH		{ $$ = ECPGd_ret_octet; }
		| SQL_SCALE				{ $$ = ECPGd_scale; }
		| TYPE_P				{ $$ = ECPGd_type; }
		;

/*
 * set/reset the automatic transaction mode, this needs a differnet handling
 * as the other set commands
 */
ECPGSetAutocommit:	SET SQL_AUTOCOMMIT '=' on_off	{ $$ = $4; }
		|  SET SQL_AUTOCOMMIT TO on_off   { $$ = $4; }
		;

on_off: ON				{ $$ = make_str("on"); }
		| OFF			{ $$ = make_str("off"); }
		;

/*
 * set the actual connection, this needs a differnet handling as the other
 * set commands
 */
ECPGSetConnection:	SET CONNECTION TO connection_object { $$ = $4; }
		| SET CONNECTION '=' connection_object { $$ = $4; }
		| SET CONNECTION  connection_object { $$ = $3; }
		;

/*
 * define a new type for embedded SQL
 */
ECPGTypedef: TYPE_P
		{
			/* reset this variable so we see if there was */
			/* an initializer specified */
			initializer = 0;
		}
		ECPGColLabelCommon IS var_type opt_array_bounds opt_reference
		{
			add_typedef($3, $6.index1, $6.index2, $5.type_enum, $5.type_dimension, $5.type_index, initializer, *$7 ? 1 : 0);

			if (auto_create_c == false)
				$$ = cat_str(7, make_str("/* exec sql type"), mm_strdup($3), make_str("is"), mm_strdup($5.type_str), mm_strdup($6.str), $7, make_str("*/"));
			else
				$$ = cat_str(6, make_str("typedef "), mm_strdup($5.type_str), *$7?make_str("*"):make_str(""), mm_strdup($6.str), mm_strdup($3), make_str(";"));
		}
		;

opt_reference: SQL_REFERENCE 		{ $$ = make_str("reference"); }
		| /*EMPTY*/		 			{ $$ = EMPTY; }
		;

/*
 * define the type of one variable for embedded SQL
 */
ECPGVar: SQL_VAR
		{
			/* reset this variable so we see if there was */
			/* an initializer specified */
			initializer = 0;
		}
		ColLabel IS var_type opt_array_bounds opt_reference
		{
			struct variable *p = find_variable($3);
			char *dimension = $6.index1;
			char *length = $6.index2;
			struct ECPGtype * type;

			if (($5.type_enum == ECPGt_struct ||
				 $5.type_enum == ECPGt_union) &&
				initializer == 1)
				mmerror(PARSE_ERROR, ET_ERROR, "initializer not allowed in EXEC SQL VAR command");
			else
			{
				adjust_array($5.type_enum, &dimension, &length, $5.type_dimension, $5.type_index, *$7?1:0, false);

				switch ($5.type_enum)
				{
					case ECPGt_struct:
					case ECPGt_union:
						if (atoi(dimension) < 0)
							type = ECPGmake_struct_type(struct_member_list[struct_level], $5.type_enum, $5.type_sizeof);
						else
							type = ECPGmake_array_type(ECPGmake_struct_type(struct_member_list[struct_level], $5.type_enum,$5.type_sizeof), dimension);
						break;

					case ECPGt_varchar:
						if (atoi(dimension) == -1)
							type = ECPGmake_simple_type($5.type_enum, length, 0);
						else
							type = ECPGmake_array_type(ECPGmake_simple_type($5.type_enum, length, 0), dimension);
						break;

					case ECPGt_char:
					case ECPGt_unsigned_char:
						if (atoi(dimension) == -1)
							type = ECPGmake_simple_type($5.type_enum, length, 0);
						else
							type = ECPGmake_array_type(ECPGmake_simple_type($5.type_enum, length, 0), dimension);
						break;

					default:
						if (atoi(length) >= 0)
							mmerror(PARSE_ERROR, ET_ERROR, "multidimensional arrays for simple data types are not supported");

						if (atoi(dimension) < 0)
							type = ECPGmake_simple_type($5.type_enum, make_str("1"), 0);
						else
							type = ECPGmake_array_type(ECPGmake_simple_type($5.type_enum, make_str("1"), 0), dimension);
						break;
				}

				ECPGfree_type(p->type);
				p->type = type;
			}

			$$ = cat_str(7, make_str("/* exec sql var"), mm_strdup($3), make_str("is"), mm_strdup($5.type_str), mm_strdup($6.str), $7, make_str("*/"));
		}
		;

/*
 * whenever statement: decide what to do in case of error/no data found
 * according to SQL standards we lack: SQLSTATE, CONSTRAINT and SQLEXCEPTION
 */
ECPGWhenever: SQL_WHENEVER SQL_SQLERROR action
		{
			when_error.code = $<action>3.code;
			when_error.command = $<action>3.command;
			$$ = cat_str(3, make_str("/* exec sql whenever sqlerror "), $3.str, make_str("; */"));
		}
		| SQL_WHENEVER NOT SQL_FOUND action
		{
			when_nf.code = $<action>4.code;
			when_nf.command = $<action>4.command;
			$$ = cat_str(3, make_str("/* exec sql whenever not found "), $4.str, make_str("; */"));
		}
		| SQL_WHENEVER SQL_SQLWARNING action
		{
			when_warn.code = $<action>3.code;
			when_warn.command = $<action>3.command;
			$$ = cat_str(3, make_str("/* exec sql whenever sql_warning "), $3.str, make_str("; */"));
		}
		;

action : CONTINUE_P
		{
			$<action>$.code = W_NOTHING;
			$<action>$.command = NULL;
			$<action>$.str = make_str("continue");
		}
		| SQL_SQLPRINT
		{
			$<action>$.code = W_SQLPRINT;
			$<action>$.command = NULL;
			$<action>$.str = make_str("sqlprint");
		}
		| SQL_STOP
		{
			$<action>$.code = W_STOP;
			$<action>$.command = NULL;
			$<action>$.str = make_str("stop");
		}
		| SQL_GOTO name
		{
			$<action>$.code = W_GOTO;
			$<action>$.command = strdup($2);
			$<action>$.str = cat2_str(make_str("goto "), $2);
		}
		| SQL_GO TO name
		{
			$<action>$.code = W_GOTO;
			$<action>$.command = strdup($3);
			$<action>$.str = cat2_str(make_str("goto "), $3);
		}
		| DO name '(' c_args ')'
		{
			$<action>$.code = W_DO;
			$<action>$.command = cat_str(4, $2, make_str("("), $4, make_str(")"));
			$<action>$.str = cat2_str(make_str("do"), mm_strdup($<action>$.command));
		}
		| DO SQL_BREAK
		{
			$<action>$.code = W_BREAK;
			$<action>$.command = NULL;
			$<action>$.str = make_str("break");
		}
		| SQL_CALL name '(' c_args ')'
		{
			$<action>$.code = W_DO;
			$<action>$.command = cat_str(4, $2, make_str("("), $4, make_str(")"));
			$<action>$.str = cat2_str(make_str("call"), mm_strdup($<action>$.command));
		}
		| SQL_CALL name
		{
			$<action>$.code = W_DO;
			$<action>$.command = cat2_str($2, make_str("()"));
			$<action>$.str = cat2_str(make_str("call"), mm_strdup($<action>$.command));
		}
		;

/* some other stuff for ecpg */

/* additional unreserved keywords */
ECPGKeywords: ECPGKeywords_vanames	{ $$ = $1; }
		| ECPGKeywords_rest 	{ $$ = $1; }
		;

ECPGKeywords_vanames:  SQL_BREAK		{ $$ = make_str("break"); }
		| SQL_CALL						{ $$ = make_str("call"); }
		| SQL_CARDINALITY				{ $$ = make_str("cardinality"); }
		| SQL_COUNT						{ $$ = make_str("count"); }
		| SQL_DATETIME_INTERVAL_CODE	{ $$ = make_str("datetime_interval_code"); }
		| SQL_DATETIME_INTERVAL_PRECISION	{ $$ = make_str("datetime_interval_precision"); }
		| SQL_FOUND						{ $$ = make_str("found"); }
		| SQL_GO						{ $$ = make_str("go"); }
		| SQL_GOTO						{ $$ = make_str("goto"); }
		| SQL_IDENTIFIED				{ $$ = make_str("identified"); }
		| SQL_INDICATOR				{ $$ = make_str("indicator"); }
		| SQL_KEY_MEMBER			{ $$ = make_str("key_member"); }
		| SQL_LENGTH				{ $$ = make_str("length"); }
		| SQL_NULLABLE				{ $$ = make_str("nullable"); }
		| SQL_OCTET_LENGTH			{ $$ = make_str("octet_length"); }
		| SQL_RETURNED_LENGTH		{ $$ = make_str("returned_length"); }
		| SQL_RETURNED_OCTET_LENGTH	{ $$ = make_str("returned_octet_length"); }
		| SQL_SCALE					{ $$ = make_str("scale"); }
		| SQL_SECTION				{ $$ = make_str("section"); }
		| SQL_SQL				{ $$ = make_str("sql"); }
		| SQL_SQLERROR				{ $$ = make_str("sqlerror"); }
		| SQL_SQLPRINT				{ $$ = make_str("sqlprint"); }
		| SQL_SQLWARNING			{ $$ = make_str("sqlwarning"); }
		| SQL_STOP					{ $$ = make_str("stop"); }
		;

ECPGKeywords_rest:  SQL_CONNECT		{ $$ = make_str("connect"); }
		| SQL_DESCRIBE				{ $$ = make_str("describe"); }
		| SQL_DISCONNECT			{ $$ = make_str("disconnect"); }
		| SQL_OPEN					{ $$ = make_str("open"); }
		| SQL_VAR					{ $$ = make_str("var"); }
		| SQL_WHENEVER				{ $$ = make_str("whenever"); }
		;

/* additional keywords that can be SQL type names (but not ECPGColLabels) */
ECPGTypeName:  SQL_BOOL				{ $$ = make_str("bool"); }
		| SQL_LONG					{ $$ = make_str("long"); }
		| SQL_OUTPUT				{ $$ = make_str("output"); }
		| SQL_SHORT					{ $$ = make_str("short"); }
		| SQL_STRUCT				{ $$ = make_str("struct"); }
		| SQL_SIGNED				{ $$ = make_str("signed"); }
		| SQL_UNSIGNED				{ $$ = make_str("unsigned"); }
		;

symbol: ColLabel					{ $$ = $1; }
		;

ECPGColId: ecpg_ident				{ $$ = $1; }
		| unreserved_keyword		{ $$ = $1; }
		| col_name_keyword			{ $$ = $1; }
		| ECPGunreserved_interval	{ $$ = $1; }
		| ECPGKeywords				{ $$ = $1; }
		| ECPGCKeywords				{ $$ = $1; }
		| CHAR_P					{ $$ = make_str("char"); }
		| VALUES					{ $$ = make_str("values"); }
		;

/*
 * Name classification hierarchy.
 *
 * These productions should match those in the core grammar, except that
 * we use all_unreserved_keyword instead of unreserved_keyword, and
 * where possible include ECPG keywords as well as core keywords.
 */

/* Column identifier --- names that can be column, table, etc names.
 */
ColId:	ecpg_ident					{ $$ = $1; }
		| all_unreserved_keyword	{ $$ = $1; }
		| col_name_keyword			{ $$ = $1; }
		| ECPGKeywords				{ $$ = $1; }
		| ECPGCKeywords				{ $$ = $1; }
		| CHAR_P					{ $$ = make_str("char"); }
		| VALUES					{ $$ = make_str("values"); }
		;

/* Type/function identifier --- names that can be type or function names.
 */
type_function_name:	ecpg_ident		{ $$ = $1; }
		| all_unreserved_keyword	{ $$ = $1; }
		| type_func_name_keyword	{ $$ = $1; }
		| ECPGKeywords				{ $$ = $1; }
		| ECPGCKeywords				{ $$ = $1; }
		| ECPGTypeName				{ $$ = $1; }
		;

/* Column label --- allowed labels in "AS" clauses.
 * This presently includes *all* Postgres keywords.
 */
ColLabel:  ECPGColLabel				{ $$ = $1; }
		| ECPGTypeName				{ $$ = $1; }
		| CHAR_P					{ $$ = make_str("char"); }
		| CURRENT_P					{ $$ = make_str("current"); }
		| INPUT_P					{ $$ = make_str("input"); }
		| INT_P						{ $$ = make_str("int"); }
		| TO						{ $$ = make_str("to"); }
		| UNION						{ $$ = make_str("union"); }
		| VALUES					{ $$ = make_str("values"); }
		| ECPGCKeywords				{ $$ = $1; }
		| ECPGunreserved_interval	{ $$ = $1; }
		;

ECPGColLabel:  ECPGColLabelCommon	{ $$ = $1; }
		| unreserved_keyword		{ $$ = $1; }
		| reserved_keyword			{ $$ = $1; }
		| ECPGKeywords_rest			{ $$ = $1; }
		| CONNECTION				{ $$ = make_str("connection"); }
		;

ECPGColLabelCommon:  ecpg_ident		{ $$ = $1; }
		| col_name_keyword			{ $$ = $1; }
		| type_func_name_keyword	{ $$ = $1; }
		| ECPGKeywords_vanames		{ $$ = $1; }
		;

ECPGCKeywords: S_AUTO				{ $$ = make_str("auto"); }
		| S_CONST					{ $$ = make_str("const"); }
		| S_EXTERN					{ $$ = make_str("extern"); }
		| S_REGISTER				{ $$ = make_str("register"); }
		| S_STATIC					{ $$ = make_str("static"); }
		| S_TYPEDEF					{ $$ = make_str("typedef"); }
		| S_VOLATILE				{ $$ = make_str("volatile"); }
		;

/* "Unreserved" keywords --- available for use as any kind of name.
 */

/*
 * The following symbols must be excluded from ECPGColLabel and directly
 * included into ColLabel to enable C variables to get names from ECPGColLabel:
 * DAY_P, HOUR_P, MINUTE_P, MONTH_P, SECOND_P, YEAR_P.
 *
 * We also have to exclude CONNECTION, CURRENT, and INPUT for various reasons.
 * CONNECTION can be added back in all_unreserved_keyword, but CURRENT and
 * INPUT are reserved for ecpg purposes.
 *
 * The mentioned exclusions are done by $replace_line settings in parse.pl.
 */
all_unreserved_keyword: unreserved_keyword	{ $$ = $1; }
		| ECPGunreserved_interval			{ $$ = $1; }
		| CONNECTION						{ $$ = make_str("connection"); }
		;

ECPGunreserved_interval: DAY_P				{ $$ = make_str("day"); }
		| HOUR_P							{ $$ = make_str("hour"); }
		| MINUTE_P							{ $$ = make_str("minute"); }
		| MONTH_P							{ $$ = make_str("month"); }
		| SECOND_P							{ $$ = make_str("second"); }
		| YEAR_P							{ $$ = make_str("year"); }
		;


into_list : coutputvariable | into_list ',' coutputvariable
		;

ecpgstart: SQL_START	{
				reset_variables();
				pacounter = 1;
			}
		;

c_args: /*EMPTY*/		{ $$ = EMPTY; }
		| c_list		{ $$ = $1; }
		;

coutputvariable: cvariable indicator
			{ add_variable_to_head(&argsresult, find_variable($1), find_variable($2)); }
		| cvariable
			{ add_variable_to_head(&argsresult, find_variable($1), &no_indicator); }
		;


civarind: cvariable indicator
		{
			if (find_variable($2)->type->type == ECPGt_array)
				mmerror(PARSE_ERROR, ET_ERROR, "arrays of indicators are not allowed on input");

			add_variable_to_head(&argsinsert, find_variable($1), find_variable($2));
			$$ = create_questionmarks($1, false);
		}
		;

civar: cvariable
		{
			add_variable_to_head(&argsinsert, find_variable($1), &no_indicator);
			$$ = create_questionmarks($1, false);
		}
		;

indicator: cvariable				{ check_indicator((find_variable($1))->type); $$ = $1; }
		| SQL_INDICATOR cvariable	{ check_indicator((find_variable($2))->type); $$ = $2; }
		| SQL_INDICATOR name		{ check_indicator((find_variable($2))->type); $$ = $2; }
		;

cvariable:	CVARIABLE
		{
			/* As long as multidimensional arrays are not implemented we have to check for those here */
			char *ptr = $1;
			int brace_open=0, brace = false;

			for (; *ptr; ptr++)
			{
				switch (*ptr)
				{
					case '[':
							if (brace)
								mmerror(PARSE_ERROR, ET_FATAL, "multidimensional arrays for simple data types are not supported");
							brace_open++;
							break;
					case ']':
							brace_open--;
							if (brace_open == 0)
								brace = true;
							break;
					case '\t':
					case ' ':
							break;
					default:
							if (brace_open == 0)
								brace = false;
							break;
				}
			}
			$$ = $1;
		}
		;

ecpg_param:	PARAM		{ $$ = make_name(); } ;

ecpg_bconst:	BCONST		{ $$ = make_name(); } ;

ecpg_fconst:	FCONST		{ $$ = make_name(); } ;

ecpg_sconst:
		SCONST
		{
			/* could have been input as '' or $$ */
			$$ = (char *)mm_alloc(strlen($1) + 3);
			$$[0]='\'';
			strcpy($$+1, $1);
			$$[strlen($1)+1]='\'';
			$$[strlen($1)+2]='\0';
			free($1);
		}
		| ECONST
		{
			$$ = (char *)mm_alloc(strlen($1) + 4);
			$$[0]='E';
			$$[1]='\'';
			strcpy($$+2, $1);
			$$[strlen($1)+2]='\'';
			$$[strlen($1)+3]='\0';
			free($1);
		}
		| NCONST
		{
			$$ = (char *)mm_alloc(strlen($1) + 4);
			$$[0]='N';
			$$[1]='\'';
			strcpy($$+2, $1);
			$$[strlen($1)+2]='\'';
			$$[strlen($1)+3]='\0';
			free($1);
		}
		| UCONST 	{ $$ = $1; }
		| DOLCONST 	{ $$ = $1; }
		;

ecpg_xconst:	XCONST		{ $$ = make_name(); } ;

ecpg_ident:	IDENT		{ $$ = make_name(); }
		| CSTRING	{ $$ = make3_str(make_str("\""), $1, make_str("\"")); }
		| UIDENT	{ $$ = $1; }
		;

quoted_ident_stringvar: name
			{ $$ = make3_str(make_str("\""), $1, make_str("\"")); }
		| char_variable
			{ $$ = make3_str(make_str("("), $1, make_str(")")); }
		;

/*
 * C stuff
 */

c_stuff_item: c_anything			{ $$ = $1; }
		| '(' ')'			{ $$ = make_str("()"); }
		| '(' c_stuff ')'
			{ $$ = cat_str(3, make_str("("), $2, make_str(")")); }
		;

c_stuff: c_stuff_item			{ $$ = $1; }
		| c_stuff c_stuff_item
			{ $$ = cat2_str($1, $2); }
		;

c_list: c_term				{ $$ = $1; }
		| c_list ',' c_term	{ $$ = cat_str(3, $1, make_str(","), $3); }
		;

c_term:  c_stuff			{ $$ = $1; }
		| '{' c_list '}'	{ $$ = cat_str(3, make_str("{"), $2, make_str("}")); }
		;

c_thing:	c_anything		{ $$ = $1; }
		|	'('		{ $$ = make_str("("); }
		|	')'		{ $$ = make_str(")"); }
		|	','		{ $$ = make_str(","); }
		|	';'		{ $$ = make_str(";"); }
		;

c_anything:  ecpg_ident				{ $$ = $1; }
		| Iconst			{ $$ = $1; }
		| ecpg_fconst			{ $$ = $1; }
		| ecpg_sconst			{ $$ = $1; }
		| '*'				{ $$ = make_str("*"); }
		| '+'				{ $$ = make_str("+"); }
		| '-'				{ $$ = make_str("-"); }
		| '/'				{ $$ = make_str("/"); }
		| '%'				{ $$ = make_str("%"); }
		| NULL_P			{ $$ = make_str("NULL"); }
		| S_ADD				{ $$ = make_str("+="); }
		| S_AND				{ $$ = make_str("&&"); }
		| S_ANYTHING			{ $$ = make_name(); }
		| S_AUTO			{ $$ = make_str("auto"); }
		| S_CONST			{ $$ = make_str("const"); }
		| S_DEC				{ $$ = make_str("--"); }
		| S_DIV				{ $$ = make_str("/="); }
		| S_DOTPOINT			{ $$ = make_str(".*"); }
		| S_EQUAL			{ $$ = make_str("=="); }
		| S_EXTERN			{ $$ = make_str("extern"); }
		| S_INC				{ $$ = make_str("++"); }
		| S_LSHIFT			{ $$ = make_str("<<"); }
		| S_MEMBER			{ $$ = make_str("->"); }
		| S_MEMPOINT			{ $$ = make_str("->*"); }
		| S_MOD				{ $$ = make_str("%="); }
		| S_MUL				{ $$ = make_str("*="); }
		| S_NEQUAL			{ $$ = make_str("!="); }
		| S_OR				{ $$ = make_str("||"); }
		| S_REGISTER			{ $$ = make_str("register"); }
		| S_RSHIFT			{ $$ = make_str(">>"); }
		| S_STATIC			{ $$ = make_str("static"); }
		| S_SUB				{ $$ = make_str("-="); }
		| S_TYPEDEF			{ $$ = make_str("typedef"); }
		| S_VOLATILE			{ $$ = make_str("volatile"); }
		| SQL_BOOL			{ $$ = make_str("bool"); }
		| ENUM_P			{ $$ = make_str("enum"); }
		| HOUR_P			{ $$ = make_str("hour"); }
		| INT_P				{ $$ = make_str("int"); }
		| SQL_LONG			{ $$ = make_str("long"); }
		| MINUTE_P			{ $$ = make_str("minute"); }
		| MONTH_P			{ $$ = make_str("month"); }
		| SECOND_P			{ $$ = make_str("second"); }
		| SQL_SHORT			{ $$ = make_str("short"); }
		| SQL_SIGNED			{ $$ = make_str("signed"); }
		| SQL_STRUCT			{ $$ = make_str("struct"); }
		| SQL_UNSIGNED			{ $$ = make_str("unsigned"); }
		| YEAR_P			{ $$ = make_str("year"); }
		| CHAR_P			{ $$ = make_str("char"); }
		| FLOAT_P			{ $$ = make_str("float"); }
		| TO				{ $$ = make_str("to"); }
		| UNION				{ $$ = make_str("union"); }
		| VARCHAR			{ $$ = make_str("varchar"); }
		| '['				{ $$ = make_str("["); }
		| ']'				{ $$ = make_str("]"); }
		| '='				{ $$ = make_str("="); }
		| ':' 				{ $$ = make_str(":"); }
		;

DeallocateStmt: DEALLOCATE prepared_name                { $$ = $2; }
                | DEALLOCATE PREPARE prepared_name      { $$ = $3; }
                | DEALLOCATE ALL                        { $$ = make_str("all"); }
                | DEALLOCATE PREPARE ALL                { $$ = make_str("all"); }
                ;

Iresult:        Iconst			{ $$ = $1; }
                | '(' Iresult ')'       { $$ = cat_str(3, make_str("("), $2, make_str(")")); }
                | Iresult '+' Iresult   { $$ = cat_str(3, $1, make_str("+"), $3); }
                | Iresult '-' Iresult   { $$ = cat_str(3, $1, make_str("-"), $3); }
                | Iresult '*' Iresult   { $$ = cat_str(3, $1, make_str("*"), $3); }
                | Iresult '/' Iresult   { $$ = cat_str(3, $1, make_str("/"), $3); }
                | Iresult '%' Iresult   { $$ = cat_str(3, $1, make_str("%"), $3); }
                | ecpg_sconst		{ $$ = $1; }
                | ColId                 { $$ = $1; }
                ;

execute_rest: /* EMPTY */	{ $$ = EMPTY; }
	| ecpg_using ecpg_into  { $$ = EMPTY; }
	| ecpg_into ecpg_using  { $$ = EMPTY; }
	| ecpg_using            { $$ = EMPTY; }
	| ecpg_into             { $$ = EMPTY; }
	; 

ecpg_into: INTO into_list	{ $$ = EMPTY; }
        | into_descriptor	{ $$ = $1; }
	;

%%

void base_yyerror(const char *error)
{
	/* translator: %s is typically the translation of "syntax error" */
	mmerror(PARSE_ERROR, ET_ERROR, "%s at or near \"%s\"",
			_(error), token_start ? token_start : yytext);
}

void parser_init(void)
{
 /* This function is empty. It only exists for compatibility with the backend parser right now. */
}

/*
 * Must undefine base_yylex before including pgc.c, since we want it
 * to create the function base_yylex not filtered_base_yylex.
 */
#undef base_yylex

#include "pgc.c"
