fix: createFunction and createFunctionLoadable

Author: liuxy0551

src/grammar/mysql/MySqlParser.g4

@@ -75,6 +75,7 @@ ddlStatement
     | createLogfileGroup
     | createProcedure
     | createFunction
+    | createFunctionLoadable
     | createServer
     | createTable
     | createTablespaceInnodb
@@ -266,6 +267,22 @@ createProcedure
     )* ')' routineOption* routineBody
     ;
 
+createFunction
+    : KW_CREATE ownerStatement? KW_AGGREGATE? KW_FUNCTION ifNotExists? functionNameCreate '(' functionParameter? (
+        ',' functionParameter
+    )* ')' KW_RETURNS dataType routineOption* (routineBody | returnStatement)
+    ;
+
+// https://dev.mysql.com/doc/refman/8.0/en/create-function-loadable.html
+createFunctionLoadable
+    : KW_CREATE KW_AGGREGATE? KW_FUNCTION ifNotExists? functionNameCreate KW_RETURNS returnType=(
+        KW_STRING
+        | KW_INTEGER
+        | KW_REAL
+        | KW_DECIMAL
+    ) KW_SONAME STRING_LITERAL
+    ;
+
 createRole
     : KW_CREATE KW_ROLE ifNotExists? userOrRoleNames
     ;
@@ -420,6 +437,10 @@ procedureParameter
     : direction=(KW_IN | KW_OUT | KW_INOUT)? paramName=uid dataType
     ;
 
+functionParameter
+    : paramName=uid dataType
+    ;
+
 routineOption
     : KW_COMMENT STRING_LITERAL                                                                  # routineComment
     | KW_LANGUAGE KW_SQL                                                                         # routineLanguage
@@ -1984,15 +2005,6 @@ checkTableOption
     | KW_CHANGED
     ;
 
-createFunction
-    : KW_CREATE KW_AGGREGATE? KW_FUNCTION ifNotExists? functionNameCreate KW_RETURNS returnType=(
-        KW_STRING
-        | KW_INTEGER
-        | KW_REAL
-        | KW_DECIMAL
-    ) KW_SONAME STRING_LITERAL
-    ;
-
 installComponent
     : KW_INSTALL KW_COMPONENT component_name=uid (',' component_name=uid)* (
         KW_SET variableExpr (',' variableExpr)*

src/parser/mysql/mysqlEntityCollector.ts

@@ -4,6 +4,7 @@ import type {
     CopyCreateTableContext,
     CreateDatabaseContext,
     CreateFunctionContext,
+    CreateFunctionLoadableContext,
     CreateViewContext,
     DatabaseNameContext,
     DatabaseNameCreateContext,
@@ -143,4 +144,12 @@ export class MySqlEntityCollector extends EntityCollector implements MySqlParser
     exitCreateFunction(ctx: CreateFunctionContext) {
         this.popStmt();
     }
+
+    enterCreateFunctionLoadable(ctx: CreateFunctionLoadableContext) {
+        this.pushStmt(ctx, StmtContextType.CREATE_FUNCTION_STMT);
+    }
+
+    exitCreateFunctionLoadable(ctx: CreateFunctionLoadableContext) {
+        this.popStmt();
+    }
 }

test/parser/mysql/contextCollect/entityCollector.test.ts

@@ -487,21 +487,21 @@ describe('MySQL entity collector tests', () => {
         const functionEntity = allEntities[0];
 
         expect(functionEntity.entityContextType).toBe(EntityContextType.FUNCTION_CREATE);
-        expect(functionEntity.text).toBe('my_concat_ws');
+        expect(functionEntity.text).toBe('hello');
         expect(functionEntity.position).toEqual({
-            endColumn: 43,
-            endIndex: 982,
+            endColumn: 39,
+            endIndex: 978,
             line: 39,
-            startColumn: 31,
-            startIndex: 971,
+            startColumn: 34,
+            startIndex: 974,
         });
 
         expect(functionEntity.belongStmt.stmtContextType).toBe(
             StmtContextType.CREATE_FUNCTION_STMT
         );
         expect(functionEntity.belongStmt.position).toEqual({
-            endColumn: 87,
-            endIndex: 1026,
+            endColumn: 114,
+            endIndex: 1053,
             endLine: 39,
             startColumn: 1,
             startIndex: 941,
@@ -512,4 +512,43 @@ describe('MySQL entity collector tests', () => {
             expect(functionEntity.relatedEntities).toBeNull();
         }
     });
+
+    test('create function loadable', () => {
+        const functionCreateContext = splitListener.statementsContext[15];
+
+        const collectListener = new MySqlEntityCollector(commonSql);
+        mysql.listen(collectListener as ParseTreeListener, functionCreateContext);
+
+        const allEntities = collectListener.getEntities();
+
+        expect(allEntities.length).toBe(1);
+
+        const functionEntity = allEntities[0];
+
+        expect(functionEntity.entityContextType).toBe(EntityContextType.FUNCTION_CREATE);
+        expect(functionEntity.text).toBe('my_concat_ws');
+        expect(functionEntity.position).toEqual({
+            endColumn: 43,
+            endIndex: 1098,
+            line: 41,
+            startColumn: 31,
+            startIndex: 1087,
+        });
+
+        expect(functionEntity.belongStmt.stmtContextType).toBe(
+            StmtContextType.CREATE_FUNCTION_STMT
+        );
+        expect(functionEntity.belongStmt.position).toEqual({
+            endColumn: 87,
+            endIndex: 1142,
+            endLine: 41,
+            startColumn: 1,
+            startIndex: 1057,
+            startLine: 41,
+        });
+        if (isFuncEntityContext(functionEntity)) {
+            expect(functionEntity.arguments).toBeNull();
+            expect(functionEntity.relatedEntities).toBeNull();
+        }
+    });
 });

test/parser/mysql/contextCollect/fixtures/common.sql

@@ -36,4 +36,6 @@ SHOW CREATE SCHEMA IF NOT EXISTS db_name;
 
 DROP SCHEMA IF EXISTS db_name;
 
+CREATE DEFINER = 'user' FUNCTION hello (s CHAR(20)) RETURNS CHAR(50) DETERMINISTIC RETURN CONCAT('Hello, ',s,'!');
+
 CREATE FUNCTION IF NOT EXISTS my_concat_ws RETURNS STRING SONAME 'udf_my_concat_ws.so';

test/parser/mysql/syntax/fixtures/createFunction.sql

@@ -11,3 +11,20 @@ CREATE FUNCTION my_concat_ws RETURNS INTEGER SONAME 'udf_my_concat_ws.so';
 CREATE FUNCTION my_concat_ws RETURNS REAL SONAME 'udf_my_concat_ws.so';
 CREATE FUNCTION my_concat_ws RETURNS DECIMAL SONAME 'udf_my_concat_ws.so';
 CREATE FUNCTION IF NOT EXISTS my_concat_ws RETURNS DECIMAL SONAME 'udf_my_concat_ws.so';
+
+
+
+-- https://dev.mysql.com/doc/refman/8.0/en/create-procedure.html
+
+CREATE FUNCTION hello (s CHAR(20)) RETURNS CHAR(50) DETERMINISTIC RETURN CONCAT('Hello, ',s,'!');
+CREATE DEFINER = 'user' FUNCTION hello (s CHAR(20)) RETURNS CHAR(50) DETERMINISTIC RETURN CONCAT('Hello, ',s,'!');
+CREATE FUNCTION `uuidToBinary`(_uuid BINARY(36)) RETURNS binary(16) DETERMINISTIC SQL SECURITY INVOKER RETURN UNHEX(
+    CONCAT(
+        SUBSTR(_uuid, 15, 4),
+        SUBSTR(_uuid, 10, 4),
+        SUBSTR(_uuid, 1, 8),
+        SUBSTR(_uuid, 20, 4),
+        SUBSTR(_uuid, 25)
+    )
+);
+CREATE FUNCTION AddNumbers(num1 INT, num2 INT) RETURNS INT RETURN num1 + num2;