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Remove backdoor strings from scan.l for DEFAULT and CHECK.
Reconstruct string input for DEFAULT and CHECK. Add DOUBLE PRECISION, CHARACTER (VARYING) SQL-92 data types.
This commit is contained in:
Thomas G. Lockhart
parent
9ea74630fc
commit
bc85dbf893
@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.44 1997/09/12 22:14:48 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.45 1997/09/13 03:15:46 thomas Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -35,6 +35,7 @@
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#include "postgres.h"
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#include "nodes/parsenodes.h"
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#include "nodes/print.h"
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#include "parser/gramparse.h"
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#include "parser/catalog_utils.h"
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#include "parser/parse_query.h"
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@ -49,11 +50,6 @@ static bool QueryIsRule = FALSE;
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static Node *saved_In_Expr;
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extern List *parsetree;
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extern int CurScanPosition(void);
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extern int DefaultStartPosition;
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extern int CheckStartPosition;
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extern char *parseString;
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/*
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* If you need access to certain yacc-generated variables and find that
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* they're static by default, uncomment the next line. (this is not a
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@ -63,6 +59,8 @@ extern char *parseString;
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static char *xlateSqlType(char *);
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static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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static List *makeConstantList( A_Const *node);
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static char *FlattenStringList(List *list);
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/* old versions of flex define this as a macro */
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#if defined(yywrap)
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@ -117,17 +115,17 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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ReplaceStmt, AppendStmt, NotifyStmt, DeleteStmt, ClusterStmt,
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ExplainStmt, VariableSetStmt, VariableShowStmt, VariableResetStmt
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%type <str> txname
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%type <str> txname, char_type
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%type <node> SubSelect
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%type <str> join_clause, join_type, join_outer, join_spec
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%type <boolean> join_qual, TriggerActionTime, TriggerForSpec
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%type <str> join_expr, join_outer, join_spec
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%type <boolean> TriggerActionTime, TriggerForSpec
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%type <str> datetime, TriggerEvents, TriggerFuncArg
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%type <str> DateTime, TriggerEvents, TriggerFuncArg
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%type <str> relation_name, copy_file_name, copy_delimiter, def_name,
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database_name, access_method_clause, access_method, attr_name,
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class, index_name, name, file_name, recipe_name,
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var_name, aggr_argtype, OptDefault
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var_name, aggr_argtype
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%type <constrdef> ConstraintElem, ConstraintDef
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@ -147,13 +145,14 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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opt_column_list, columnList, opt_va_list, va_list,
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sort_clause, sortby_list, index_params, index_list, name_list,
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from_clause, from_list, opt_array_bounds, nest_array_bounds,
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expr_list, default_expr_list, attrs, res_target_list, res_target_list2,
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expr_list, attrs, res_target_list, res_target_list2,
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def_list, opt_indirection, group_clause, groupby_list, TriggerFuncArgs
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%type <list> union_clause, select_list
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%type <list> join_list
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%type <sortgroupby> join_using
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%type <node> position_expr
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%type <list> extract_list, position_list
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%type <list> substr_list, substr_from, substr_for, trim_list
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%type <list> interval_opts
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@ -178,7 +177,6 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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%type <defelt> def_elem
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%type <node> def_arg, columnElem, where_clause,
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a_expr, a_expr_or_null, AexprConst,
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default_expr, default_expr_or_null,
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in_expr_nodes, not_in_expr_nodes,
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having_clause
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%type <value> NumConst
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@ -197,6 +195,9 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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%type <str> Id, date, var_value, zone_value
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%type <str> ColId
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%type <list> default_expr
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%type <str> opt_default
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%type <list> constraint_elem
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/*
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* If you make any token changes, remember to:
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@ -208,30 +209,34 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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%token ABORT_TRANS, ACL, ADD, AFTER, AGGREGATE, ALL, ALTER, ANALYZE,
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AND, APPEND, ARCHIVE, ARCH_STORE, AS, ASC,
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BACKWARD, BEFORE, BEGIN_TRANS, BETWEEN, BINARY, BOTH, BY,
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CAST, CHANGE, CHECK, CLOSE, CLUSTER, COLUMN, COMMIT, CONSTRAINT, COPY, CREATE, CROSS,
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CURRENT, CURSOR, DATABASE, DAYINTERVAL, DECLARE, DEFAULT, DELETE, DELIMITERS, DESC,
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DISTINCT, DO, DROP, END_TRANS, EXISTS, EXTEND, EXTRACT,
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FETCH, FOR, FORWARD, FROM, FULL, FUNCTION, GRANT, GROUP,
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HAVING, HEAVY, HOURINTERVAL,
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IN, INDEX, INHERITS, INNERJOIN, INSERT, INSTEAD, INTERVAL, INTO, IS, ISNULL,
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JOIN, LANGUAGE, LEADING, LEFT, LIGHT, LISTEN, LOAD, LOCAL,
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MERGE, MINUTEINTERVAL, MONTHINTERVAL, MOVE,
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CAST, CHANGE, CHECK, CLOSE, CLUSTER, COLUMN,
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COMMIT, CONSTRAINT, COPY, CREATE, CROSS, CURRENT, CURSOR,
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DATABASE, DAYINTERVAL, DECLARE, DEFAULT, DELETE, DELIMITERS, DESC,
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DISTINCT, DO, DROP, END_TRANS, EXISTS, EXTEND,
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FETCH, FOR, FORWARD, FROM, FULL, FUNCTION, GRANT, GROUP, HAVING, HEAVY, HOURINTERVAL,
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IN, INDEX, INHERITS, INNERJOIN, INSERT, INTERVAL, INSTEAD, INTO, IS, ISNULL,
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JOIN, LANGUAGE, LEADING, LEFT, LIGHT, LISTEN, LOAD, LOCAL, MERGE, MINUTEINTERVAL, MONTHINTERVAL, MOVE,
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NATURAL, NEW, NONE, NOT, NOTHING, NOTIFY, NOTNULL,
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OIDS, ON, OPERATOR, OPTION, OR, ORDER, OUTERJOIN,
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PNULL, POSITION, PRIVILEGES, PROCEDURE, PUBLIC, PURGE, P_TYPE,
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PNULL, PRIVILEGES, PROCEDURE, PUBLIC, PURGE, P_TYPE,
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RENAME, REPLACE, RESET, RETRIEVE, RETURNS, REVOKE, RIGHT, ROLLBACK, RULE,
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SECONDINTERVAL, SELECT, SET, SETOF, SHOW, STDIN, STDOUT, STORE, SUBSTRING,
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TABLE, TIME, TO, TRAILING, TRANSACTION, TRIGGER, TRIM,
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SECONDINTERVAL, SELECT, SET, SETOF, SHOW, STDIN, STDOUT, STORE,
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TABLE, TIME, TO, TRAILING, TRANSACTION, TRIGGER,
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UNION, UNIQUE, UPDATE, USING, VACUUM, VALUES,
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VERBOSE, VERSION, VIEW, WHERE, WITH, WORK, YEARINTERVAL, ZONE
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%token EXECUTE, RECIPE, EXPLAIN, LIKE, SEQUENCE
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/* SQL-92 support */
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%token EXTRACT, POSITION, SUBSTRING, TRIM
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%token DOUBLE, PRECISION
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%token CHARACTER, VARYING
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/* Special keywords, not in the query language - see the "lex" file */
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%token <str> IDENT, SCONST, Op
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%token <ival> ICONST, PARAM
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%token <dval> FCONST
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/* these are not real. they are here so that they gets generated as #define's*/
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/* these are not real. they are here so that they get generated as #define's*/
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%token OP
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/* precedence */
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@ -387,7 +392,7 @@ AddAttrStmt: ALTER TABLE relation_name opt_inh_star ADD COLUMN columnDef
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* called out in SQL92 date/time definitions. So, check explicitly for "timestamp"
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* and "time". - thomas 1997-07-14
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*/
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columnDef: Id Typename opt_with_col OptDefault opt_null
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columnDef: Id Typename opt_with_col opt_default opt_null
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{
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$$ = makeNode(ColumnDef);
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$$->colname = $1;
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@ -402,108 +407,70 @@ columnDef: Id Typename opt_with_col OptDefault opt_null
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}
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;
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OptDefault: DEFAULT default_expr
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opt_default: DEFAULT default_expr
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{
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int deflen = CurScanPosition() - DefaultStartPosition;
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char *defval;
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defval = (char*) palloc (deflen + 1);
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memcpy (defval, parseString + DefaultStartPosition,
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deflen);
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defval[deflen] = 0;
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$$ = defval;
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$$ = FlattenStringList($2);
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}
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| /*EMPTY*/ { $$ = NULL; }
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;
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default_expr_or_null: default_expr
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{ $$ = $1;}
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| Pnull
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{
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A_Const *n = makeNode(A_Const);
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n->val.type = T_Null;
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$$ = (Node *)n;
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}
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default_expr: AexprConst
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{
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if (nodeTag($1) != T_A_Const)
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elog (WARN, "Cannot handle parameter in DEFAULT");
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$$ = $1;
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}
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{ $$ = makeConstantList((A_Const *) $1); }
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| Pnull
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{ $$ = lcons( makeString("NULL"), NIL); }
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| '-' default_expr %prec UMINUS
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{ $$ = makeA_Expr(OP, "-", NULL, $2); }
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{ $$ = lcons( makeString( "-"), $2); }
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| default_expr '+' default_expr
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{ $$ = makeA_Expr(OP, "+", $1, $3); }
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{ $$ = nconc( $1, lcons( makeString( "+"), $3)); }
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| default_expr '-' default_expr
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{ $$ = makeA_Expr(OP, "-", $1, $3); }
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{ $$ = nconc( $1, lcons( makeString( "-"), $3)); }
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| default_expr '/' default_expr
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{ $$ = makeA_Expr(OP, "/", $1, $3); }
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{ $$ = nconc( $1, lcons( makeString( "/"), $3)); }
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| default_expr '*' default_expr
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{ $$ = makeA_Expr(OP, "*", $1, $3); }
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| default_expr '<' default_expr
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{ $$ = makeA_Expr(OP, "<", $1, $3); }
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| default_expr '>' default_expr
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{ $$ = makeA_Expr(OP, ">", $1, $3); }
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{ $$ = nconc( $1, lcons( makeString( "*"), $3)); }
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| default_expr '=' default_expr
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{ $$ = makeA_Expr(OP, "=", $1, $3); }
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{ elog(WARN,"boolean expressions not supported in DEFAULT",NULL); }
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| default_expr '<' default_expr
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{ elog(WARN,"boolean expressions not supported in DEFAULT",NULL); }
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| default_expr '>' default_expr
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{ elog(WARN,"boolean expressions not supported in DEFAULT",NULL); }
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| ':' default_expr
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{ $$ = makeA_Expr(OP, ":", NULL, $2); }
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{ $$ = lcons( makeString( ":"), $2); }
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| ';' default_expr
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{ $$ = makeA_Expr(OP, ";", NULL, $2); }
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{ $$ = lcons( makeString( ";"), $2); }
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| '|' default_expr
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{ $$ = makeA_Expr(OP, "|", NULL, $2); }
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| AexprConst TYPECAST Typename
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{ $$ = lcons( makeString( "|"), $2); }
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| default_expr TYPECAST Typename
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{
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/* AexprConst can be either A_Const or ParamNo */
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if (nodeTag($1) == T_A_Const)
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((A_Const *)$1)->typename = $3;
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else
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elog (WARN, "Cannot handle parameter in DEFAULT");
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$$ = (Node *)$1;
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$$ = nconc( lcons( makeString( "CAST"), $1), makeList( makeString("AS"), $3, -1));
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}
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| CAST AexprConst AS Typename
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| CAST default_expr AS Typename
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{
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/* AexprConst can be either A_Const or ParamNo */
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if (nodeTag($2) == T_A_Const)
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((A_Const *)$2)->typename = $4;
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else
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elog (WARN, "Cannot handle parameter in DEFAULT");
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$$ = (Node *)$2;
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$$ = nconc( lcons( makeString( "CAST"), $2), makeList( makeString("AS"), $4, -1));
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}
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| '(' default_expr ')'
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{ $$ = $2; }
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{ $$ = lappend( lcons( makeString( "("), $2), makeString( ")")); }
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| name '(' default_expr ')'
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{
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$$ = makeList( makeString($1), makeString("("), -1);
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$$ = nconc( $$, $3);
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$$ = lappend( $$, makeString(")"));
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}
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| default_expr Op default_expr
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{ $$ = makeA_Expr(OP, $2, $1, $3); }
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{
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if (!strcmp("<=", $2) || !strcmp(">=", $2))
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elog(WARN,"boolean expressions not supported in DEFAULT",NULL);
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$$ = nconc( $1, lcons( $2, $3));
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}
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| Op default_expr
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{ $$ = makeA_Expr(OP, $1, NULL, $2); }
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{ $$ = lcons( $1, $2); }
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| default_expr Op
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{ $$ = makeA_Expr(OP, $2, $1, NULL); }
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| name '(' ')'
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{
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FuncCall *n = makeNode(FuncCall);
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n->funcname = $1;
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n->args = NIL;
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$$ = (Node *)n;
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}
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| name '(' default_expr_list ')'
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{
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FuncCall *n = makeNode(FuncCall);
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n->funcname = $1;
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n->args = $3;
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$$ = (Node *)n;
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}
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{ $$ = lcons( $2, $1); }
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;
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default_expr_list: default_expr_or_null
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{ $$ = lcons($1, NIL); }
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| default_expr_list ',' default_expr_or_null
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{ $$ = lappend($1, $3); }
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;
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opt_null: NOT PNULL { $$ = true; }
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| NOTNULL { $$ = true; }
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| /* EMPTY */ { $$ = false; }
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opt_null: NOT PNULL { $$ = TRUE; }
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| NOTNULL { $$ = TRUE; }
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| /* EMPTY */ { $$ = FALSE; }
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;
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opt_with_col: WITH TIME ZONE { $$ = TRUE; }
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@ -640,7 +607,7 @@ OptInherit: INHERITS '(' relation_name_list ')' { $$ = $3; }
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;
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OptConstraint: ConstraintList { $$ = $1; }
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| { $$ = NULL; }
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| /*EMPTY*/ { $$ = NULL; }
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;
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ConstraintList:
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@ -659,24 +626,81 @@ ConstraintElem:
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| ConstraintDef { $$ = $1; }
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;
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ConstraintDef: CHECK a_expr
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ConstraintDef: CHECK constraint_elem
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{
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ConstraintDef *constr = palloc (sizeof(ConstraintDef));
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int chklen = CurScanPosition() - CheckStartPosition;
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char *check;
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check = (char*) palloc (chklen + 1);
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memcpy (check,
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parseString + CheckStartPosition,
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chklen);
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check[chklen] = 0;
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#ifdef PARSEDEBUG
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printf("in ConstraintDef\n");
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#endif
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constr->type = CONSTR_CHECK;
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constr->name = NULL;
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constr->def = (void*) check;
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constr->def = FlattenStringList($2);
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$$ = constr;
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}
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;
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constraint_elem: AexprConst
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{ $$ = makeConstantList((A_Const *) $1); }
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| Pnull
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{ $$ = lcons( makeString("NULL"), NIL); }
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| Id
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{
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#ifdef PARSEDEBUG
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printf( "Id is %s\n", $1);
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#endif
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$$ = lcons( makeString($1), NIL);
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}
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| '-' constraint_elem %prec UMINUS
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{ $$ = lcons( makeString( "-"), $2); }
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| constraint_elem '+' constraint_elem
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{ $$ = nconc( $1, lcons( makeString( "+"), $3)); }
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| constraint_elem '-' constraint_elem
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{ $$ = nconc( $1, lcons( makeString( "-"), $3)); }
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| constraint_elem '/' constraint_elem
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{ $$ = nconc( $1, lcons( makeString( "/"), $3)); }
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| constraint_elem '*' constraint_elem
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{ $$ = nconc( $1, lcons( makeString( "*"), $3)); }
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| constraint_elem '=' constraint_elem
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{ $$ = nconc( $1, lcons( makeString( "="), $3)); }
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| constraint_elem '<' constraint_elem
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{ $$ = nconc( $1, lcons( makeString( "<"), $3)); }
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| constraint_elem '>' constraint_elem
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{ $$ = nconc( $1, lcons( makeString( ">"), $3)); }
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| ':' constraint_elem
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{ $$ = lcons( makeString( ":"), $2); }
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| ';' constraint_elem
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{ $$ = lcons( makeString( ";"), $2); }
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| '|' constraint_elem
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{ $$ = lcons( makeString( "|"), $2); }
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| constraint_elem TYPECAST Typename
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{
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$$ = nconc( lcons( makeString( "CAST"), $1), makeList( makeString("AS"), $3, -1));
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}
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| CAST constraint_elem AS Typename
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{
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$$ = nconc( lcons( makeString( "CAST"), $2), makeList( makeString("AS"), $4, -1));
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}
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| '(' constraint_elem ')'
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{ $$ = lappend( lcons( makeString( "("), $2), makeString( ")")); }
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| name '(' constraint_elem ')'
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{
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$$ = makeList( makeString($1), makeString("("), -1);
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$$ = nconc( $$, $3);
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$$ = lappend( $$, makeString(")"));
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}
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| constraint_elem Op constraint_elem
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{ $$ = nconc( $1, lcons( $2, $3)); }
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| constraint_elem AND constraint_elem
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{ $$ = nconc( $1, lcons( makeString( "AND"), $3)); }
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| constraint_elem OR constraint_elem
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{ $$ = nconc( $1, lcons( makeString( "OR"), $3)); }
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| Op constraint_elem
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{ $$ = lcons( $1, $2); }
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| constraint_elem Op
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{ $$ = lcons( $2, $1); }
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;
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/*****************************************************************************
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*
|
||||
* QUERY :
|
||||
@ -738,8 +762,8 @@ CreateTrigStmt: CREATE TRIGGER name TriggerActionTime TriggerEvents ON
|
||||
}
|
||||
;
|
||||
|
||||
TriggerActionTime: BEFORE { $$ = true; }
|
||||
| AFTER { $$ = false; }
|
||||
TriggerActionTime: BEFORE { $$ = TRUE; }
|
||||
| AFTER { $$ = FALSE; }
|
||||
;
|
||||
|
||||
TriggerEvents: TriggerOneEvent
|
||||
@ -770,9 +794,9 @@ TriggerForSpec: FOR name name
|
||||
if ( strcmp ($2, "each") != 0 )
|
||||
elog(WARN,"parser: syntax error near %s",$2);
|
||||
if ( strcmp ($3, "row") == 0 )
|
||||
$$ = true;
|
||||
$$ = TRUE;
|
||||
else if ( strcmp ($3, "statement") == 0 )
|
||||
$$ = false;
|
||||
$$ = FALSE;
|
||||
else
|
||||
elog(WARN,"parser: syntax error near %s",$3);
|
||||
}
|
||||
@ -821,46 +845,64 @@ def_rest: def_name definition
|
||||
{
|
||||
$$ = makeNode(DefineStmt);
|
||||
$$->defname = $1;
|
||||
#ifdef PARSEDEBUG
|
||||
printf("def_rest: defname is %s\n", $1);
|
||||
#endif
|
||||
$$->definition = $2;
|
||||
}
|
||||
;
|
||||
|
||||
def_type: OPERATOR { $$ = OPERATOR; }
|
||||
| Type { $$ = P_TYPE; }
|
||||
| Type
|
||||
{
|
||||
#ifdef PARSEDEBUG
|
||||
printf("def_type: decoding P_TYPE\n");
|
||||
#endif
|
||||
$$ = P_TYPE;
|
||||
}
|
||||
| AGGREGATE { $$ = AGGREGATE; }
|
||||
;
|
||||
|
||||
def_name: Id | MathOp | Op
|
||||
def_name: PROCEDURE { $$ = "procedure"; }
|
||||
| Id { $$ = $1; }
|
||||
| MathOp { $$ = $1; }
|
||||
| Op { $$ = $1; }
|
||||
;
|
||||
|
||||
|
||||
definition: '(' def_list ')' { $$ = $2; }
|
||||
;
|
||||
|
||||
|
||||
def_list: def_elem
|
||||
{ $$ = lcons($1, NIL); }
|
||||
| def_list ',' def_elem
|
||||
{ $$ = lappend($1, $3); }
|
||||
def_list: def_elem { $$ = lcons($1, NIL); }
|
||||
| def_list ',' def_elem { $$ = lappend($1, $3); }
|
||||
;
|
||||
|
||||
def_elem: def_name '=' def_arg
|
||||
{
|
||||
#ifdef PARSEDEBUG
|
||||
printf("def_elem: decoding %s =\n", $1);
|
||||
pprint($3);
|
||||
#endif
|
||||
$$ = makeNode(DefElem);
|
||||
$$->defname = $1;
|
||||
$$->arg = (Node *)$3;
|
||||
}
|
||||
| def_name
|
||||
{
|
||||
#ifdef PARSEDEBUG
|
||||
printf("def_elem: decoding %s\n", $1);
|
||||
#endif
|
||||
$$ = makeNode(DefElem);
|
||||
$$->defname = $1;
|
||||
$$->arg = (Node *)NULL;
|
||||
}
|
||||
| DEFAULT '=' def_arg
|
||||
{
|
||||
#ifdef PARSEDEBUG
|
||||
printf("def_elem: decoding DEFAULT =\n");
|
||||
pprint($3);
|
||||
#endif
|
||||
$$ = makeNode(DefElem);
|
||||
$$->defname = (char*) palloc (8);
|
||||
strcpy ($$->defname, "default");
|
||||
$$->defname = "default";
|
||||
$$->arg = (Node *)$3;
|
||||
}
|
||||
;
|
||||
@ -869,13 +911,15 @@ def_arg: Id { $$ = (Node *)makeString($1); }
|
||||
| all_Op { $$ = (Node *)makeString($1); }
|
||||
| NumConst { $$ = (Node *)$1; /* already a Value */ }
|
||||
| Sconst { $$ = (Node *)makeString($1); }
|
||||
| SETOF Id {
|
||||
| SETOF Id
|
||||
{
|
||||
TypeName *n = makeNode(TypeName);
|
||||
n->name = $2;
|
||||
n->setof = TRUE;
|
||||
n->arrayBounds = NULL;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| DOUBLE { $$ = (Node *)makeString("double"); }
|
||||
;
|
||||
|
||||
|
||||
@ -890,14 +934,14 @@ DestroyStmt: DROP TABLE relation_name_list
|
||||
{
|
||||
DestroyStmt *n = makeNode(DestroyStmt);
|
||||
n->relNames = $3;
|
||||
n->sequence = false;
|
||||
n->sequence = FALSE;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| DROP SEQUENCE relation_name_list
|
||||
{
|
||||
DestroyStmt *n = makeNode(DestroyStmt);
|
||||
n->relNames = $3;
|
||||
n->sequence = true;
|
||||
n->sequence = TRUE;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
;
|
||||
@ -927,7 +971,7 @@ opt_direction: FORWARD { $$ = FORWARD; }
|
||||
|
||||
fetch_how_many: Iconst
|
||||
{ $$ = $1;
|
||||
if ($1 <= 0) elog(WARN,"Please specify nonnegative count for fetch"); }
|
||||
if ($1 <= 0) elog(WARN,"Please specify nonnegative count for fetch",NULL); }
|
||||
| ALL { $$ = 0; /* 0 means fetch all tuples*/}
|
||||
| /*EMPTY*/ { $$ = 1; /*default*/ }
|
||||
;
|
||||
@ -1129,7 +1173,7 @@ RecipeStmt: EXECUTE RECIPE recipe_name
|
||||
{
|
||||
RecipeStmt *n;
|
||||
if (!IsTransactionBlock())
|
||||
elog(WARN, "EXECUTE RECIPE may only be used in begin/end transaction blocks.");
|
||||
elog(WARN,"EXECUTE RECIPE may only be used in begin/end transaction blocks",NULL);
|
||||
|
||||
n = makeNode(RecipeStmt);
|
||||
n->recipeName = $3;
|
||||
@ -1310,7 +1354,7 @@ MathOp: '+' { $$ = "+"; }
|
||||
|
||||
oper_argtypes: name
|
||||
{
|
||||
elog(WARN, "parser: argument type missing (use NONE for unary operators)");
|
||||
elog(WARN,"parser: argument type missing (use NONE for unary operators)",NULL);
|
||||
}
|
||||
| name ',' name
|
||||
{ $$ = makeList(makeString($1), makeString($3), -1); }
|
||||
@ -1637,7 +1681,7 @@ VacuumStmt: VACUUM opt_verbose opt_analyze
|
||||
n->vacrel = $3;
|
||||
n->va_spec = $5;
|
||||
if ( $5 != NIL && !$4 )
|
||||
elog (WARN, "parser: syntax error at or near \"(\"");
|
||||
elog(WARN,"parser: syntax error at or near \"(\"",NULL);
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
;
|
||||
@ -1811,7 +1855,7 @@ CursorStmt: DECLARE name opt_binary CURSOR FOR
|
||||
* -- mao
|
||||
*/
|
||||
if (!IsTransactionBlock())
|
||||
elog(WARN, "Named portals may only be used in begin/end transaction blocks.");
|
||||
elog(WARN,"Named portals may only be used in begin/end transaction blocks",NULL);
|
||||
|
||||
n->portalname = $2;
|
||||
n->binary = $3;
|
||||
@ -2077,7 +2121,7 @@ having_clause: HAVING a_expr { $$ = $2; }
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
from_clause: FROM '(' relation_expr join_clause relation_expr join_spec ')'
|
||||
from_clause: FROM '(' relation_expr join_expr JOIN relation_expr join_spec ')'
|
||||
{
|
||||
$$ = NIL;
|
||||
elog(WARN,"JOIN not yet implemented",NULL);
|
||||
@ -2114,29 +2158,21 @@ from_val: relation_expr AS var_name
|
||||
}
|
||||
;
|
||||
|
||||
join_clause: join_qual join_type JOIN
|
||||
{
|
||||
$$ = NULL;
|
||||
}
|
||||
;
|
||||
|
||||
join_qual: NATURAL { $$ = TRUE; }
|
||||
| /*EMPTY*/ { $$ = FALSE; }
|
||||
;
|
||||
|
||||
join_type: FULL join_outer
|
||||
join_expr: NATURAL join_expr { $$ = NULL; }
|
||||
| FULL join_outer
|
||||
{ elog(WARN,"FULL OUTER JOIN not yet implemented",NULL); }
|
||||
| LEFT join_outer
|
||||
{ elog(WARN,"LEFT OUTER JOIN not yet implemented",NULL); }
|
||||
| RIGHT join_outer
|
||||
{ elog(WARN,"RIGHT OUTER JOIN not yet implemented",NULL); }
|
||||
| join_outer
|
||||
| OUTERJOIN
|
||||
{ elog(WARN,"OUTER JOIN not yet implemented",NULL); }
|
||||
| INNERJOIN
|
||||
{ elog(WARN,"INNER JOIN not yet implemented",NULL); }
|
||||
| UNION
|
||||
{ elog(WARN,"UNION JOIN not yet implemented",NULL); }
|
||||
| /*EMPTY*/ { $$ = NULL; /* no qualifiers */ }
|
||||
| /*EMPTY*/
|
||||
{ elog(WARN,"INNER JOIN not yet implemented",NULL); }
|
||||
;
|
||||
|
||||
join_outer: OUTERJOIN { $$ = NULL; }
|
||||
@ -2280,8 +2316,14 @@ typname: txname
|
||||
;
|
||||
|
||||
txname: Id { $$ = $1; }
|
||||
| TIME { $$ = "time"; }
|
||||
| INTERVAL interval_opts { $$ = "interval"; }
|
||||
| TIME { $$ = xlateSqlType("time"); }
|
||||
| INTERVAL interval_opts { $$ = xlateSqlType("interval"); }
|
||||
| CHARACTER char_type { $$ = $2; }
|
||||
| DOUBLE PRECISION { $$ = xlateSqlType("float8"); }
|
||||
;
|
||||
|
||||
char_type: VARYING { $$ = xlateSqlType("varchar"); }
|
||||
| /*EMPTY*/ { $$ = xlateSqlType("char"); }
|
||||
;
|
||||
|
||||
interval_opts: YEARINTERVAL { $$ = lcons("year", NIL); }
|
||||
@ -2303,6 +2345,10 @@ Typename: typname opt_array_bounds
|
||||
{
|
||||
$$ = $1;
|
||||
$$->arrayBounds = $2;
|
||||
if (!strcasecmp($1->name, "varchar"))
|
||||
{
|
||||
$$->typlen = 4 + 1;
|
||||
}
|
||||
}
|
||||
| txname '(' Iconst ')'
|
||||
{
|
||||
@ -2577,24 +2623,138 @@ expr_list: a_expr_or_null
|
||||
{ $$ = lappend($1, $3); }
|
||||
;
|
||||
|
||||
extract_list: datetime FROM a_expr
|
||||
extract_list: DateTime FROM a_expr
|
||||
{
|
||||
A_Const *n = makeNode(A_Const);
|
||||
n->val.type = T_String;
|
||||
n->val.val.str = $1;
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "string is %s\n", $1);
|
||||
#endif
|
||||
$$ = lappend(lcons((Node *)n,NIL), $3);
|
||||
}
|
||||
| /* EMPTY */
|
||||
{ $$ = NIL; }
|
||||
;
|
||||
|
||||
position_list: a_expr IN expr_list
|
||||
{ $$ = lappend($3, $1); }
|
||||
position_list: position_expr IN position_expr
|
||||
{ $$ = makeList($3, $1, -1); }
|
||||
| /* EMPTY */
|
||||
{ $$ = NIL; }
|
||||
;
|
||||
|
||||
position_expr: attr opt_indirection
|
||||
{
|
||||
$1->indirection = $2;
|
||||
$$ = (Node *)$1;
|
||||
}
|
||||
| AexprConst
|
||||
{ $$ = $1; }
|
||||
| '-' position_expr %prec UMINUS
|
||||
{ $$ = makeA_Expr(OP, "-", NULL, $2); }
|
||||
| position_expr '+' position_expr
|
||||
{ $$ = makeA_Expr(OP, "+", $1, $3); }
|
||||
| position_expr '-' position_expr
|
||||
{ $$ = makeA_Expr(OP, "-", $1, $3); }
|
||||
| position_expr '/' position_expr
|
||||
{ $$ = makeA_Expr(OP, "/", $1, $3); }
|
||||
| position_expr '*' position_expr
|
||||
{ $$ = makeA_Expr(OP, "*", $1, $3); }
|
||||
| '|' position_expr
|
||||
{ $$ = makeA_Expr(OP, "|", NULL, $2); }
|
||||
| AexprConst TYPECAST Typename
|
||||
{
|
||||
/* AexprConst can be either A_Const or ParamNo */
|
||||
if (nodeTag($1) == T_A_Const)
|
||||
((A_Const *)$1)->typename = $3;
|
||||
else
|
||||
((ParamNo *)$1)->typename = $3;
|
||||
$$ = (Node *)$1;
|
||||
}
|
||||
| CAST AexprConst AS Typename
|
||||
{
|
||||
/* AexprConst can be either A_Const or ParamNo */
|
||||
if (nodeTag($2) == T_A_Const)
|
||||
((A_Const *)$2)->typename = $4;
|
||||
else
|
||||
((ParamNo *)$2)->typename = $4;
|
||||
$$ = (Node *)$2;
|
||||
}
|
||||
| '(' position_expr ')'
|
||||
{ $$ = $2; }
|
||||
| position_expr Op position_expr
|
||||
{ $$ = makeA_Expr(OP, $2, $1, $3); }
|
||||
| Op position_expr
|
||||
{ $$ = makeA_Expr(OP, $1, NULL, $2); }
|
||||
| position_expr Op
|
||||
{ $$ = makeA_Expr(OP, $2, $1, NULL); }
|
||||
| Id
|
||||
{
|
||||
/* could be a column name or a relation_name */
|
||||
Ident *n = makeNode(Ident);
|
||||
n->name = $1;
|
||||
n->indirection = NULL;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| name '(' ')'
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = $1;
|
||||
n->args = NIL;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| POSITION '(' position_list ')'
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = "strpos";
|
||||
n->args = $3;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| SUBSTRING '(' substr_list ')'
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = "substr";
|
||||
n->args = $3;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
/* various trim expressions are defined in SQL92 - thomas 1997-07-19 */
|
||||
| TRIM '(' BOTH trim_list ')'
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = "btrim";
|
||||
n->args = $4;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| TRIM '(' LEADING trim_list ')'
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = "ltrim";
|
||||
n->args = $4;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| TRIM '(' TRAILING trim_list ')'
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = "rtrim";
|
||||
n->args = $4;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| TRIM '(' trim_list ')'
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = "btrim";
|
||||
n->args = $3;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
| name '(' expr_list ')'
|
||||
{
|
||||
FuncCall *n = makeNode(FuncCall);
|
||||
n->funcname = $1;
|
||||
n->args = $3;
|
||||
$$ = (Node *)n;
|
||||
}
|
||||
;
|
||||
|
||||
substr_list: expr_list substr_from substr_for
|
||||
{
|
||||
$$ = $1;
|
||||
@ -2667,7 +2827,7 @@ attrs: attr_name
|
||||
{ $$ = lappend($1, makeString("*")); }
|
||||
;
|
||||
|
||||
datetime: YEARINTERVAL { $$ = "year"; }
|
||||
DateTime: YEARINTERVAL { $$ = "year"; }
|
||||
| MONTHINTERVAL { $$ = "month"; }
|
||||
| DAYINTERVAL { $$ = "day"; }
|
||||
| HOURINTERVAL { $$ = "hour"; }
|
||||
@ -2857,7 +3017,7 @@ Sconst: SCONST { $$ = $1; };
|
||||
Id: IDENT { $$ = $1; };
|
||||
|
||||
ColId: Id { $$ = $1; }
|
||||
| datetime { $$ = $1; }
|
||||
| DateTime { $$ = $1; }
|
||||
;
|
||||
|
||||
SpecialRuleRelation: CURRENT
|
||||
@ -2865,14 +3025,14 @@ SpecialRuleRelation: CURRENT
|
||||
if (QueryIsRule)
|
||||
$$ = "*CURRENT*";
|
||||
else
|
||||
elog(WARN,"CURRENT used in non-rule query");
|
||||
elog(WARN,"CURRENT used in non-rule query",NULL);
|
||||
}
|
||||
| NEW
|
||||
{
|
||||
if (QueryIsRule)
|
||||
$$ = "*NEW*";
|
||||
else
|
||||
elog(WARN,"NEW used in non-rule query");
|
||||
elog(WARN,"NEW used in non-rule query",NULL);
|
||||
}
|
||||
;
|
||||
|
||||
@ -2892,6 +3052,9 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr)
|
||||
return (Node *)a;
|
||||
}
|
||||
|
||||
/* xlateSqlType()
|
||||
* Convert alternate type names to internal Postgres types.
|
||||
*/
|
||||
static char *
|
||||
xlateSqlType(char *name)
|
||||
{
|
||||
@ -2911,9 +3074,108 @@ xlateSqlType(char *name)
|
||||
|
||||
void parser_init(Oid *typev, int nargs)
|
||||
{
|
||||
QueryIsRule = false;
|
||||
QueryIsRule = FALSE;
|
||||
saved_relname[0]= '\0';
|
||||
saved_In_Expr = NULL;
|
||||
|
||||
param_type_init(typev, nargs);
|
||||
}
|
||||
|
||||
/* FlattenStringList()
|
||||
* Traverse list of string nodes and convert to a single string.
|
||||
* Used for reconstructing string form of complex expressions.
|
||||
*/
|
||||
static char *
|
||||
FlattenStringList(List *list)
|
||||
{
|
||||
List *l, *lp;
|
||||
char *s;
|
||||
char *sp;
|
||||
int nlist, len = 1;
|
||||
|
||||
nlist = length(list);
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "list has %d elements\n", nlist);
|
||||
#endif
|
||||
l = list;
|
||||
while(l != NIL) {
|
||||
lp = lfirst(l);
|
||||
sp = (char *)(lp->elem.ptr_value);
|
||||
l = lnext(l);
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "length of %s is %d\n", sp, strlen(sp));
|
||||
#endif
|
||||
len += strlen(sp)+1;
|
||||
};
|
||||
|
||||
s = (char*) palloc(len);
|
||||
*s = '\0';
|
||||
|
||||
l = list;
|
||||
while(l != NIL) {
|
||||
lp = lfirst(l);
|
||||
sp = (char *)(lp->elem.ptr_value);
|
||||
l = lnext(l);
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "length of %s is %d\n", sp, strlen(sp));
|
||||
#endif
|
||||
strcat(s,sp);
|
||||
strcat(s," ");
|
||||
};
|
||||
*(s+len-2) = '\0';
|
||||
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "flattened string is \"%s\"\n", s);
|
||||
#endif
|
||||
|
||||
return(s);
|
||||
} /* FlattenStringList() */
|
||||
|
||||
/* makeConstantList()
|
||||
* Convert constant value node into string node.
|
||||
*/
|
||||
static List *
|
||||
makeConstantList( A_Const *n)
|
||||
{
|
||||
char *defval = NULL;
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "in AexprConst\n");
|
||||
#endif
|
||||
if (nodeTag(n) != T_A_Const) {
|
||||
elog(WARN,"Cannot handle non-constant parameter",NULL);
|
||||
|
||||
} else if (n->val.type == T_Float) {
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "AexprConst float is %f\n", n->val.val.dval);
|
||||
#endif
|
||||
defval = (char*) palloc(20+1);
|
||||
sprintf( defval, "%g", n->val.val.dval);
|
||||
|
||||
} else if (n->val.type == T_Integer) {
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "AexprConst integer is %ld\n", n->val.val.ival);
|
||||
#endif
|
||||
defval = (char*) palloc(20+1);
|
||||
sprintf( defval, "%ld", n->val.val.ival);
|
||||
|
||||
} else if (n->val.type == T_String) {
|
||||
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "AexprConst string is \"%s\"\n", n->val.val.str);
|
||||
#endif
|
||||
|
||||
defval = (char*) palloc(strlen( ((A_Const *) n)->val.val.str) + 3);
|
||||
strcpy( defval, "'");
|
||||
strcat( defval, ((A_Const *) n)->val.val.str);
|
||||
strcat( defval, "'");
|
||||
|
||||
} else {
|
||||
elog(WARN,"Internal error: cannot encode node",NULL);
|
||||
};
|
||||
|
||||
#ifdef PARSEDEBUG
|
||||
printf( "AexprConst argument is \"%s\"\n", defval);
|
||||
#endif
|
||||
|
||||
return( lcons( makeString(defval), NIL));
|
||||
} /* makeConstantList() */
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user