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Create a validator for plpgsql, so that some minimal syntax checking
is done at creation time for plpgsql functions. Improve createlang and droplang to support adding/dropping validators for PLs. Initial steps towards producing a syntax error position from plpgsql syntax errors (this part is a work in progress, and will change depending on outcome of current discussions).
This commit is contained in:
Tom Lane
parent
74ffc77279
commit
0fdc6c4cc0
@ -5,7 +5,7 @@
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* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/bin/scripts/createlang.c,v 1.7 2003/11/29 19:52:07 pgsql Exp $
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* $PostgreSQL: pgsql/src/bin/scripts/createlang.c,v 1.8 2004/03/19 18:58:07 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -49,8 +49,10 @@ main(int argc, char *argv[])
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char *p;
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bool handlerexists;
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bool validatorexists;
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bool trusted;
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char *handler;
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char *validator = NULL;
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char *object;
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PQExpBufferData sql;
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@ -169,6 +171,7 @@ main(int argc, char *argv[])
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{
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trusted = true;
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handler = "plpgsql_call_handler";
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validator = "plpgsql_validator";
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object = "plpgsql";
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}
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else if (strcmp(langname, "pltcl") == 0)
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@ -229,13 +232,26 @@ main(int argc, char *argv[])
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/*
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* Check whether the call handler exists
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*/
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printfPQExpBuffer(&sql, "SELECT oid FROM pg_proc WHERE proname = '%s' AND prorettype = (SELECT oid FROM pg_type WHERE typname = 'language_handler') AND pronargs = 0;", handler);
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printfPQExpBuffer(&sql, "SELECT oid FROM pg_proc WHERE proname = '%s' AND prorettype = 'pg_catalog.language_handler'::regtype AND pronargs = 0;", handler);
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result = executeQuery(conn, sql.data, progname, echo);
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handlerexists = (PQntuples(result) > 0);
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PQclear(result);
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/*
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* Create the call handler and the language
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* Check whether the validator exists
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*/
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if (validator)
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{
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printfPQExpBuffer(&sql, "SELECT oid FROM pg_proc WHERE proname = '%s' AND proargtypes[0] = 'pg_catalog.oid'::regtype AND pronargs = 1;", validator);
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result = executeQuery(conn, sql.data, progname, echo);
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validatorexists = (PQntuples(result) > 0);
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PQclear(result);
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}
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else
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validatorexists = true; /* don't try to create it */
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/*
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* Create the function(s) and the language
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*/
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resetPQExpBuffer(&sql);
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@ -244,10 +260,20 @@ main(int argc, char *argv[])
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"CREATE FUNCTION \"%s\" () RETURNS language_handler AS '%s/%s' LANGUAGE C;\n",
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handler, pglib, object);
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if (!validatorexists)
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appendPQExpBuffer(&sql,
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"CREATE FUNCTION \"%s\" (oid) RETURNS void AS '%s/%s' LANGUAGE C;\n",
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validator, pglib, object);
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appendPQExpBuffer(&sql,
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"CREATE %sLANGUAGE \"%s\" HANDLER \"%s\";\n",
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"CREATE %sLANGUAGE \"%s\" HANDLER \"%s\"",
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(trusted ? "TRUSTED " : ""), langname, handler);
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if (validator)
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appendPQExpBuffer(&sql, " VALIDATOR \"%s\"", validator);
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appendPQExpBuffer(&sql, ";\n");
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if (echo)
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printf("%s", sql.data);
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result = PQexec(conn, sql.data);
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@ -5,7 +5,7 @@
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* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/bin/scripts/droplang.c,v 1.6 2003/11/29 19:52:07 pgsql Exp $
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* $PostgreSQL: pgsql/src/bin/scripts/droplang.c,v 1.7 2004/03/19 18:58:07 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -14,6 +14,8 @@
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#include "common.h"
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#include "print.h"
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#define atooid(x) ((Oid) strtoul((x), NULL, 10))
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static void help(const char *progname);
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@ -46,9 +48,12 @@ main(int argc, char *argv[])
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char *langname = NULL;
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char *p;
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char *lanplcallfoid;
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Oid lanplcallfoid;
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Oid lanvalidator;
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char *handler;
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char *validator;
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bool keephandler;
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bool keepvalidator;
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PQExpBufferData sql;
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@ -159,10 +164,10 @@ main(int argc, char *argv[])
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conn = connectDatabase(dbname, host, port, username, password, progname);
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/*
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* Make sure the language is installed and find the OID of the handler
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* function
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* Make sure the language is installed and find the OIDs of the handler
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* and validator functions
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*/
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printfPQExpBuffer(&sql, "SELECT lanplcallfoid FROM pg_language WHERE lanname = '%s' AND lanispl;", langname);
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printfPQExpBuffer(&sql, "SELECT lanplcallfoid, lanvalidator FROM pg_language WHERE lanname = '%s' AND lanispl;", langname);
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result = executeQuery(conn, sql.data, progname, echo);
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if (PQntuples(result) == 0)
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{
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@ -171,8 +176,9 @@ main(int argc, char *argv[])
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progname, langname, dbname);
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exit(1);
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}
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lanplcallfoid = PQgetvalue(result, 0, 0);
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/* result not cleared! */
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lanplcallfoid = atooid(PQgetvalue(result, 0, 0));
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lanvalidator = atooid(PQgetvalue(result, 0, 1));
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PQclear(result);
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/*
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* Check that there are no functions left defined in that language
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@ -192,7 +198,7 @@ main(int argc, char *argv[])
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/*
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* Check that the handler function isn't used by some other language
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*/
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printfPQExpBuffer(&sql, "SELECT count(*) FROM pg_language WHERE lanplcallfoid = %s AND lanname <> '%s';", lanplcallfoid, langname);
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printfPQExpBuffer(&sql, "SELECT count(*) FROM pg_language WHERE lanplcallfoid = %u AND lanname <> '%s';", lanplcallfoid, langname);
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result = executeQuery(conn, sql.data, progname, echo);
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if (strcmp(PQgetvalue(result, 0, 0), "0") == 0)
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keephandler = false;
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@ -205,20 +211,51 @@ main(int argc, char *argv[])
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*/
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if (!keephandler)
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{
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printfPQExpBuffer(&sql, "SELECT proname FROM pg_proc WHERE oid = %s;", lanplcallfoid);
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printfPQExpBuffer(&sql, "SELECT proname FROM pg_proc WHERE oid = %u;", lanplcallfoid);
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result = executeQuery(conn, sql.data, progname, echo);
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handler = PQgetvalue(result, 0, 0);
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/* result not cleared! */
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handler = strdup(PQgetvalue(result, 0, 0));
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PQclear(result);
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}
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else
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handler = NULL;
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/*
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* Drop the language
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* Check that the validator function isn't used by some other language
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*/
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if (OidIsValid(lanvalidator))
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{
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printfPQExpBuffer(&sql, "SELECT count(*) FROM pg_language WHERE lanvalidator = %u AND lanname <> '%s';", lanvalidator, langname);
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result = executeQuery(conn, sql.data, progname, echo);
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if (strcmp(PQgetvalue(result, 0, 0), "0") == 0)
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keepvalidator = false;
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else
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keepvalidator = true;
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PQclear(result);
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}
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else
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keepvalidator = true; /* don't try to delete it */
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/*
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* Find the validator name
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*/
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if (!keepvalidator)
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{
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printfPQExpBuffer(&sql, "SELECT proname FROM pg_proc WHERE oid = %u;", lanvalidator);
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result = executeQuery(conn, sql.data, progname, echo);
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validator = strdup(PQgetvalue(result, 0, 0));
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PQclear(result);
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}
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else
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validator = NULL;
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/*
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* Drop the language and the functions
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*/
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printfPQExpBuffer(&sql, "DROP LANGUAGE \"%s\";\n", langname);
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if (!keephandler)
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appendPQExpBuffer(&sql, "DROP FUNCTION \"%s\" ();\n", handler);
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if (!keepvalidator)
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appendPQExpBuffer(&sql, "DROP FUNCTION \"%s\" (oid);\n", validator);
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if (echo)
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printf("%s", sql.data);
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result = PQexec(conn, sql.data);
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@ -8,7 +8,7 @@
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* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/catalog/pg_type.h,v 1.150 2004/02/24 22:59:10 tgl Exp $
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* $PostgreSQL: pgsql/src/include/catalog/pg_type.h,v 1.151 2004/03/19 18:58:07 tgl Exp $
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*
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* NOTES
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* the genbki.sh script reads this file and generates .bki
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@ -402,6 +402,7 @@ DATA(insert OID = 1003 ( _name PGNSP PGUID -1 f b t \054 0 19 array_in array_
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DATA(insert OID = 1005 ( _int2 PGNSP PGUID -1 f b t \054 0 21 array_in array_out array_recv array_send - i x f 0 -1 0 _null_ _null_ ));
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DATA(insert OID = 1006 ( _int2vector PGNSP PGUID -1 f b t \054 0 22 array_in array_out array_recv array_send - i x f 0 -1 0 _null_ _null_ ));
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DATA(insert OID = 1007 ( _int4 PGNSP PGUID -1 f b t \054 0 23 array_in array_out array_recv array_send - i x f 0 -1 0 _null_ _null_ ));
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#define INT4ARRAYOID 1007
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DATA(insert OID = 1008 ( _regproc PGNSP PGUID -1 f b t \054 0 24 array_in array_out array_recv array_send - i x f 0 -1 0 _null_ _null_ ));
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DATA(insert OID = 1009 ( _text PGNSP PGUID -1 f b t \054 0 25 array_in array_out array_recv array_send - i x f 0 -1 0 _null_ _null_ ));
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DATA(insert OID = 1028 ( _oid PGNSP PGUID -1 f b t \054 0 26 array_in array_out array_recv array_send - i x f 0 -1 0 _null_ _null_ ));
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@ -3,7 +3,7 @@
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* procedural language
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/pl/plpgsql/src/pl_comp.c,v 1.73 2004/01/07 18:56:30 neilc Exp $
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* $PostgreSQL: pgsql/src/pl/plpgsql/src/pl_comp.c,v 1.74 2004/03/19 18:58:07 tgl Exp $
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*
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* This software is copyrighted by Jan Wieck - Hamburg.
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*
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@ -101,13 +101,15 @@ typedef struct plpgsql_hashent
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*/
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static PLpgSQL_function *do_compile(FunctionCallInfo fcinfo,
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HeapTuple procTup,
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PLpgSQL_func_hashkey *hashkey);
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PLpgSQL_func_hashkey *hashkey,
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bool forValidator);
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static void plpgsql_compile_error_callback(void *arg);
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static char **fetchArgNames(HeapTuple procTup, int nargs);
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static PLpgSQL_type *build_datatype(HeapTuple typeTup, int32 typmod);
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static void compute_function_hashkey(FunctionCallInfo fcinfo,
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Form_pg_proc procStruct,
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PLpgSQL_func_hashkey *hashkey);
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PLpgSQL_func_hashkey *hashkey,
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bool forValidator);
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static PLpgSQL_function *plpgsql_HashTableLookup(PLpgSQL_func_hashkey *func_key);
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static void plpgsql_HashTableInsert(PLpgSQL_function *function,
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PLpgSQL_func_hashkey *func_key);
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@ -134,12 +136,15 @@ perm_fmgr_info(Oid functionId, FmgrInfo *finfo)
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/* ----------
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* plpgsql_compile Make an execution tree for a PL/pgSQL function.
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*
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* If forValidator is true, we're only compiling for validation purposes,
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* and so some checks are skipped.
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*
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* Note: it's important for this to fall through quickly if the function
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* has already been compiled.
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* ----------
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*/
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PLpgSQL_function *
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plpgsql_compile(FunctionCallInfo fcinfo)
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plpgsql_compile(FunctionCallInfo fcinfo, bool forValidator)
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{
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Oid funcOid = fcinfo->flinfo->fn_oid;
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HeapTuple procTup;
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@ -171,7 +176,7 @@ plpgsql_compile(FunctionCallInfo fcinfo)
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plpgsql_HashTableInit();
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/* Compute hashkey using function signature and actual arg types */
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compute_function_hashkey(fcinfo, procStruct, &hashkey);
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compute_function_hashkey(fcinfo, procStruct, &hashkey, forValidator);
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hashkey_valid = true;
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/* And do the lookup */
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@ -205,12 +210,13 @@ plpgsql_compile(FunctionCallInfo fcinfo)
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* the completed function.
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*/
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if (!hashkey_valid)
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compute_function_hashkey(fcinfo, procStruct, &hashkey);
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compute_function_hashkey(fcinfo, procStruct, &hashkey,
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forValidator);
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/*
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* Do the hard part.
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*/
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function = do_compile(fcinfo, procTup, &hashkey);
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function = do_compile(fcinfo, procTup, &hashkey, forValidator);
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}
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ReleaseSysCache(procTup);
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@ -232,7 +238,8 @@ plpgsql_compile(FunctionCallInfo fcinfo)
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static PLpgSQL_function *
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do_compile(FunctionCallInfo fcinfo,
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HeapTuple procTup,
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PLpgSQL_func_hashkey *hashkey)
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PLpgSQL_func_hashkey *hashkey,
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bool forValidator)
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{
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Form_pg_proc procStruct = (Form_pg_proc) GETSTRUCT(procTup);
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int functype = CALLED_AS_TRIGGER(fcinfo) ? T_TRIGGER : T_FUNCTION;
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@ -308,7 +315,8 @@ do_compile(FunctionCallInfo fcinfo,
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/*
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* Check for a polymorphic returntype. If found, use the
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* actual returntype type from the caller's FuncExpr node, if
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* we have one.
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* we have one. (In validation mode we arbitrarily assume we
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* are dealing with integers.)
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*
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* Note: errcode is FEATURE_NOT_SUPPORTED because it should
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* always work; if it doesn't we're in some context that fails
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@ -317,7 +325,15 @@ do_compile(FunctionCallInfo fcinfo,
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rettypeid = procStruct->prorettype;
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if (rettypeid == ANYARRAYOID || rettypeid == ANYELEMENTOID)
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{
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rettypeid = get_fn_expr_rettype(fcinfo->flinfo);
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if (forValidator)
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{
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if (rettypeid == ANYARRAYOID)
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rettypeid = INT4ARRAYOID;
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else
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rettypeid = INT4OID;
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}
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else
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rettypeid = get_fn_expr_rettype(fcinfo->flinfo);
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if (!OidIsValid(rettypeid))
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ereport(ERROR,
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(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
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@ -1758,22 +1774,6 @@ plpgsql_add_initdatums(int **varnos)
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}
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/* ---------
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* plpgsql_yyerror Handle parser error
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* ---------
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*/
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void
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plpgsql_yyerror(const char *s)
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{
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plpgsql_error_lineno = plpgsql_scanner_lineno();
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ereport(ERROR,
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(errcode(ERRCODE_SYNTAX_ERROR),
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/* translator: first %s is a phrase like "syntax error" */
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errmsg("%s at or near \"%s\"", s, plpgsql_yytext)));
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}
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/*
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* Compute the hashkey for a given function invocation
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*
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@ -1782,7 +1782,8 @@ plpgsql_yyerror(const char *s)
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static void
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compute_function_hashkey(FunctionCallInfo fcinfo,
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Form_pg_proc procStruct,
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PLpgSQL_func_hashkey *hashkey)
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PLpgSQL_func_hashkey *hashkey,
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bool forValidator)
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{
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int i;
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@ -1792,8 +1793,12 @@ compute_function_hashkey(FunctionCallInfo fcinfo,
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/* get function OID */
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hashkey->funcOid = fcinfo->flinfo->fn_oid;
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/* if trigger, get relation OID */
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if (CALLED_AS_TRIGGER(fcinfo))
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/*
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* if trigger, get relation OID. In validation mode we do not know what
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* relation is intended to be used, so we leave trigrelOid zero; the
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* hash entry built in this case will never really be used.
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*/
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if (CALLED_AS_TRIGGER(fcinfo) && !forValidator)
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{
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TriggerData *trigdata = (TriggerData *) fcinfo->context;
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@ -1808,6 +1813,9 @@ compute_function_hashkey(FunctionCallInfo fcinfo,
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/*
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* Check for polymorphic arguments. If found, use the actual
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* parameter type from the caller's FuncExpr node, if we have one.
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* (In validation mode we arbitrarily assume we are dealing with
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* integers. This lets us build a valid, if possibly useless,
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* function hashtable entry.)
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*
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* We can support arguments of type ANY the same way as normal
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* polymorphic arguments.
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@ -1815,7 +1823,15 @@ compute_function_hashkey(FunctionCallInfo fcinfo,
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if (argtypeid == ANYARRAYOID || argtypeid == ANYELEMENTOID ||
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argtypeid == ANYOID)
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{
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argtypeid = get_fn_expr_argtype(fcinfo->flinfo, i);
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if (forValidator)
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{
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if (argtypeid == ANYARRAYOID)
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argtypeid = INT4ARRAYOID;
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else
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argtypeid = INT4OID;
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}
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else
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argtypeid = get_fn_expr_argtype(fcinfo->flinfo, i);
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if (!OidIsValid(argtypeid))
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ereport(ERROR,
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(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
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@ -3,7 +3,7 @@
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* procedural language
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/pl/plpgsql/src/pl_handler.c,v 1.19 2003/11/29 19:52:12 pgsql Exp $
|
||||
* $PostgreSQL: pgsql/src/pl/plpgsql/src/pl_handler.c,v 1.20 2004/03/19 18:58:07 tgl Exp $
|
||||
*
|
||||
* This software is copyrighted by Jan Wieck - Hamburg.
|
||||
*
|
||||
@ -42,8 +42,11 @@
|
||||
#include "catalog/pg_proc.h"
|
||||
#include "catalog/pg_type.h"
|
||||
#include "utils/builtins.h"
|
||||
#include "utils/lsyscache.h"
|
||||
#include "utils/syscache.h"
|
||||
|
||||
extern bool check_function_bodies;
|
||||
|
||||
static int plpgsql_firstcall = 1;
|
||||
|
||||
static void plpgsql_init_all(void);
|
||||
@ -88,7 +91,6 @@ plpgsql_init_all(void)
|
||||
/* ----------
|
||||
* plpgsql_call_handler
|
||||
*
|
||||
* This is the only visible function of the PL interpreter.
|
||||
* The PostgreSQL function manager and trigger manager
|
||||
* call this function for execution of PL/pgSQL procedures.
|
||||
* ----------
|
||||
@ -111,7 +113,7 @@ plpgsql_call_handler(PG_FUNCTION_ARGS)
|
||||
elog(ERROR, "SPI_connect failed");
|
||||
|
||||
/* Find or compile the function */
|
||||
func = plpgsql_compile(fcinfo);
|
||||
func = plpgsql_compile(fcinfo, false);
|
||||
|
||||
/*
|
||||
* Determine if called as function or trigger and call appropriate
|
||||
@ -131,3 +133,118 @@ plpgsql_call_handler(PG_FUNCTION_ARGS)
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* ----------
|
||||
* plpgsql_validator
|
||||
*
|
||||
* This function attempts to validate a PL/pgSQL function at
|
||||
* CREATE FUNCTION time.
|
||||
* ----------
|
||||
*/
|
||||
PG_FUNCTION_INFO_V1(plpgsql_validator);
|
||||
|
||||
Datum
|
||||
plpgsql_validator(PG_FUNCTION_ARGS)
|
||||
{
|
||||
Oid funcoid = PG_GETARG_OID(0);
|
||||
HeapTuple tuple;
|
||||
Form_pg_proc proc;
|
||||
char functyptype;
|
||||
bool istrigger = false;
|
||||
bool haspolyresult;
|
||||
bool haspolyarg;
|
||||
int i;
|
||||
|
||||
/* perform initialization */
|
||||
plpgsql_init_all();
|
||||
|
||||
/* Get the new function's pg_proc entry */
|
||||
tuple = SearchSysCache(PROCOID,
|
||||
ObjectIdGetDatum(funcoid),
|
||||
0, 0, 0);
|
||||
if (!HeapTupleIsValid(tuple))
|
||||
elog(ERROR, "cache lookup failed for function %u", funcoid);
|
||||
proc = (Form_pg_proc) GETSTRUCT(tuple);
|
||||
|
||||
functyptype = get_typtype(proc->prorettype);
|
||||
|
||||
/* Disallow pseudotype result */
|
||||
/* except for TRIGGER, RECORD, VOID, ANYARRAY, or ANYELEMENT */
|
||||
if (functyptype == 'p')
|
||||
{
|
||||
/* we assume OPAQUE with no arguments means a trigger */
|
||||
if (proc->prorettype == TRIGGEROID ||
|
||||
(proc->prorettype == OPAQUEOID && proc->pronargs == 0))
|
||||
istrigger = true;
|
||||
else if (proc->prorettype == ANYARRAYOID ||
|
||||
proc->prorettype == ANYELEMENTOID)
|
||||
haspolyresult = true;
|
||||
else if (proc->prorettype != RECORDOID &&
|
||||
proc->prorettype != VOIDOID)
|
||||
ereport(ERROR,
|
||||
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
|
||||
errmsg("plpgsql functions cannot return type %s",
|
||||
format_type_be(proc->prorettype))));
|
||||
}
|
||||
|
||||
/* Disallow pseudotypes in arguments */
|
||||
/* except for ANYARRAY or ANYELEMENT */
|
||||
haspolyarg = false;
|
||||
for (i = 0; i < proc->pronargs; i++)
|
||||
{
|
||||
if (get_typtype(proc->proargtypes[i]) == 'p')
|
||||
{
|
||||
if (proc->proargtypes[i] == ANYARRAYOID ||
|
||||
proc->proargtypes[i] == ANYELEMENTOID)
|
||||
haspolyarg = true;
|
||||
else
|
||||
ereport(ERROR,
|
||||
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
|
||||
errmsg("plpgsql functions cannot take type %s",
|
||||
format_type_be(proc->proargtypes[i]))));
|
||||
}
|
||||
}
|
||||
|
||||
/* Postpone body checks if !check_function_bodies */
|
||||
if (check_function_bodies)
|
||||
{
|
||||
FunctionCallInfoData fake_fcinfo;
|
||||
FmgrInfo flinfo;
|
||||
TriggerData trigdata;
|
||||
|
||||
/*
|
||||
* Connect to SPI manager (is this needed for compilation?)
|
||||
*/
|
||||
if (SPI_connect() != SPI_OK_CONNECT)
|
||||
elog(ERROR, "SPI_connect failed");
|
||||
|
||||
/*
|
||||
* Set up a fake fcinfo with just enough info to satisfy
|
||||
* plpgsql_compile().
|
||||
*/
|
||||
MemSet(&fake_fcinfo, 0, sizeof(fake_fcinfo));
|
||||
MemSet(&flinfo, 0, sizeof(flinfo));
|
||||
fake_fcinfo.flinfo = &flinfo;
|
||||
flinfo.fn_oid = funcoid;
|
||||
flinfo.fn_mcxt = CurrentMemoryContext;
|
||||
if (istrigger)
|
||||
{
|
||||
MemSet(&trigdata, 0, sizeof(trigdata));
|
||||
trigdata.type = T_TriggerData;
|
||||
fake_fcinfo.context = (Node *) &trigdata;
|
||||
}
|
||||
|
||||
/* Test-compile the function */
|
||||
plpgsql_compile(&fake_fcinfo, true);
|
||||
|
||||
/*
|
||||
* Disconnect from SPI manager
|
||||
*/
|
||||
if (SPI_finish() != SPI_OK_FINISH)
|
||||
elog(ERROR, "SPI_finish failed");
|
||||
}
|
||||
|
||||
ReleaseSysCache(tuple);
|
||||
|
||||
PG_RETURN_VOID();
|
||||
}
|
||||
|
||||
@ -3,7 +3,7 @@
|
||||
* procedural language
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/pl/plpgsql/src/plpgsql.h,v 1.44 2004/02/25 18:10:51 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/pl/plpgsql/src/plpgsql.h,v 1.45 2004/03/19 18:58:07 tgl Exp $
|
||||
*
|
||||
* This software is copyrighted by Jan Wieck - Hamburg.
|
||||
*
|
||||
@ -620,7 +620,8 @@ extern PLpgSQL_function *plpgsql_curr_compile;
|
||||
* Functions in pl_comp.c
|
||||
* ----------
|
||||
*/
|
||||
extern PLpgSQL_function *plpgsql_compile(FunctionCallInfo fcinfo);
|
||||
extern PLpgSQL_function *plpgsql_compile(FunctionCallInfo fcinfo,
|
||||
bool forValidator);
|
||||
extern int plpgsql_parse_word(char *word);
|
||||
extern int plpgsql_parse_dblword(char *word);
|
||||
extern int plpgsql_parse_tripword(char *word);
|
||||
@ -633,7 +634,6 @@ extern PLpgSQL_type *plpgsql_parse_datatype(char *string);
|
||||
extern PLpgSQL_row *plpgsql_build_rowtype(Oid classOid);
|
||||
extern void plpgsql_adddatum(PLpgSQL_datum * new);
|
||||
extern int plpgsql_add_initdatums(int **varnos);
|
||||
extern void plpgsql_yyerror(const char *s);
|
||||
extern void plpgsql_HashTableInit(void);
|
||||
|
||||
/* ----------
|
||||
@ -642,6 +642,7 @@ extern void plpgsql_HashTableInit(void);
|
||||
*/
|
||||
extern void plpgsql_init(void);
|
||||
extern Datum plpgsql_call_handler(PG_FUNCTION_ARGS);
|
||||
extern Datum plpgsql_validator(PG_FUNCTION_ARGS);
|
||||
|
||||
/* ----------
|
||||
* Functions in pl_exec.c
|
||||
@ -691,6 +692,7 @@ extern int plpgsql_yyparse(void);
|
||||
extern int plpgsql_base_yylex(void);
|
||||
extern int plpgsql_yylex(void);
|
||||
extern void plpgsql_push_back_token(int token);
|
||||
extern void plpgsql_yyerror(const char *message);
|
||||
extern int plpgsql_scanner_lineno(void);
|
||||
extern void plpgsql_scanner_init(const char *str, int functype);
|
||||
extern void plpgsql_scanner_finish(void);
|
||||
|
||||
@ -4,7 +4,7 @@
|
||||
* procedural language
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $PostgreSQL: pgsql/src/pl/plpgsql/src/scan.l,v 1.32 2004/02/25 18:10:51 tgl Exp $
|
||||
* $PostgreSQL: pgsql/src/pl/plpgsql/src/scan.l,v 1.33 2004/03/19 18:58:07 tgl Exp $
|
||||
*
|
||||
* This software is copyrighted by Jan Wieck - Hamburg.
|
||||
*
|
||||
@ -38,6 +38,8 @@
|
||||
|
||||
#include "plpgsql.h"
|
||||
|
||||
#include "mb/pg_wchar.h"
|
||||
|
||||
|
||||
/* No reason to constrain amount of data slurped */
|
||||
#define YY_READ_BUF_SIZE 16777216
|
||||
@ -409,6 +411,38 @@ plpgsql_push_back_token(int token)
|
||||
have_pushback_token = true;
|
||||
}
|
||||
|
||||
/*
|
||||
* Report a syntax error.
|
||||
*/
|
||||
void
|
||||
plpgsql_yyerror(const char *message)
|
||||
{
|
||||
const char *loc = yytext;
|
||||
int cursorpos;
|
||||
|
||||
plpgsql_error_lineno = plpgsql_scanner_lineno();
|
||||
|
||||
/* in multibyte encodings, return index in characters not bytes */
|
||||
cursorpos = pg_mbstrlen_with_len(scanbuf, loc - scanbuf) + 1;
|
||||
|
||||
if (*loc == YY_END_OF_BUFFER_CHAR)
|
||||
{
|
||||
ereport(ERROR,
|
||||
(errcode(ERRCODE_SYNTAX_ERROR),
|
||||
/* translator: %s is typically "syntax error" */
|
||||
errmsg("%s at end of input", message),
|
||||
errposition(cursorpos)));
|
||||
}
|
||||
else
|
||||
{
|
||||
ereport(ERROR,
|
||||
(errcode(ERRCODE_SYNTAX_ERROR),
|
||||
/* translator: first %s is typically "syntax error" */
|
||||
errmsg("%s at or near \"%s\"", message, loc),
|
||||
errposition(cursorpos)));
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Get the line number at which the current token ends. This substitutes
|
||||
* for flex's very poorly implemented yylineno facility.
|
||||
@ -439,19 +473,6 @@ plpgsql_scanner_init(const char *str, int functype)
|
||||
{
|
||||
Size slen;
|
||||
|
||||
/*----------
|
||||
* Hack: skip any initial newline, so that in the common coding layout
|
||||
* CREATE FUNCTION ... AS '
|
||||
* code body
|
||||
* ' LANGUAGE 'plpgsql';
|
||||
* we will think "line 1" is what the programmer thinks of as line 1.
|
||||
*----------
|
||||
*/
|
||||
if (*str == '\r')
|
||||
str++;
|
||||
if (*str == '\n')
|
||||
str++;
|
||||
|
||||
slen = strlen(str);
|
||||
|
||||
/*
|
||||
@ -478,6 +499,19 @@ plpgsql_scanner_init(const char *str, int functype)
|
||||
cur_line_start = scanbuf;
|
||||
cur_line_num = 1;
|
||||
|
||||
/*----------
|
||||
* Hack: skip any initial newline, so that in the common coding layout
|
||||
* CREATE FUNCTION ... AS '
|
||||
* code body
|
||||
* ' LANGUAGE 'plpgsql';
|
||||
* we will think "line 1" is what the programmer thinks of as line 1.
|
||||
*----------
|
||||
*/
|
||||
if (*cur_line_start == '\r')
|
||||
cur_line_start++;
|
||||
if (*cur_line_start == '\n')
|
||||
cur_line_start++;
|
||||
|
||||
BEGIN(INITIAL);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user