fix: allow db2 declare statement in the working storage and linkage section

Signed-off-by: Aman Prashant <[email protected]>

Author: ap891843

server/engine/src/main/antlr4/org/eclipse/lsp/db2/parser/Db2SqlParser.g4

@@ -40,7 +40,7 @@ procedureDivisionRules: ((dbs_allocate | dbs_alter | dbs_associate | dbs_call |
           dbs_revoke | dbs_rollback | dbs_savepoint | dbs_select | dbs_set | dbs_signal | dbs_transfer | dbs_truncate |
           dbs_update | dbs_values) dbs_semicolon_end?)+;
 
-rulesAllowedInDataDivisionAndProcedureDivision: ((dbs_declare_cursor | dbs_whenever | dbs_declare_table | dbs_include) dbs_semicolon_end?)+;
+rulesAllowedInDataDivisionAndProcedureDivision: ((dbs_declare_cursor | dbs_whenever | dbs_declare_table | dbs_include | DECLARE dbs_declare_statement) dbs_semicolon_end?)+;
 
 rulesAllowedInWorkingStorageAndLinkageSection: ((dbs_begin | dbs_end | dbs_include_sqlca | dbs_include_sqlda) dbs_semicolon_end?)+;
 
@@ -552,7 +552,7 @@ dbs_create_view: VIEW dbs_view_name column_loop? AS tbl_expr_loop?  dbs_fullsele
 tbl_expr_loop: WITH dbs_select_statement_common_table_expression dbs_comma_separator dbs_select_statement_common_table_expression*;
 
 /*DECLARE (all) */
-dbs_declare: DECLARE (dbs_declare_global | dbs_declare_statement);
+dbs_declare: DECLARE dbs_declare_global;
 
 dbs_declare_cursor: DECLARE dbs_cursor_name ((NO|ASENSITIVE|INSENSITIVE|SENSITIVE (DYNAMIC|STATIC)?) SCROLL)? CURSOR ((WITH|WITHOUT) HOLD |
                     (WITHOUT RETURN|WITH RETURN TO (CALLER|CLIENT)) | (WITH|WITHOUT) ROWSET POSITIONING)* /*random ordering req*/
@@ -1799,4 +1799,4 @@ dbs_integer_max: INTEGERLITERAL  {validateValue($INTEGERLITERAL.text, "214748364
 dbs_char_a: NONNUMERICLITERAL  {validateValue($NONNUMERICLITERAL.text, "A");};
 dbs_char_n: NONNUMERICLITERAL  {validateValue($NONNUMERICLITERAL.text, "N");};
 dbs_char_r: NONNUMERICLITERAL  {validateValue($NONNUMERICLITERAL.text, "R");};
-/////// End Variables /////////////
+/////

server/engine/src/test/java/org/eclipse/lsp/cobol/usecases/TestSqlAllDeclareStatements.java

@@ -17,13 +17,12 @@
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import java.util.stream.Stream;
 import org.eclipse.lsp.cobol.test.engine.UseCaseEngine;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.MethodSource;
 
-import java.util.stream.Stream;
-
 /**
  * This PARAMETERIZED test checks if all below sql DECLARE statements works correctly.
  *
@@ -107,13 +106,36 @@ class TestSqlAllDeclareStatements {
           + "             DECLARE :{$AMBER} VARIABLE CCSID UNICODE;\n"
           + "           END-EXEC.";
 
+  public static final String DECLARE_STATEMENT_IN_WORKING_STORAGE =
+      "       IDENTIFICATION DIVISION.\n"
+          + "       PROGRAM-ID. HELLO-SQL.\n"
+          + "       DATA DIVISION.\n"
+          + "       WORKING-STORAGE SECTION.\n"
+          + "           EXEC SQL\n"
+          + "              declare asasa statement\n"
+          + "             END-EXEC.\n"
+          + "       PROCEDURE DIVISION.";
+
+  public static final String DECLARE_STATEMENT_IN_LINKAGE_SECTION =
+      "       IDENTIFICATION DIVISION.\n"
+          + "       PROGRAM-ID. HELLO-SQL.\n"
+          + "       DATA DIVISION.\n"
+          + "       WORKING-STORAGE SECTION.\n"
+          + "       LINKAGE SECTION.\n"
+          + "           EXEC SQL\n"
+          + "              declare asasa statement\n"
+          + "             END-EXEC.\n"
+          + "       PROCEDURE DIVISION.";
+
   private static Stream<String> textsToTest() {
     return Stream.of(
         DECLARE_CURSOR,
         DECLARE_GLOBAL_TEMP_TABLE,
         DECLARE_TABLE,
         DECLARE_STATEMENT,
-        DECLARE_VARIABLE);
+        DECLARE_VARIABLE,
+        DECLARE_STATEMENT_IN_WORKING_STORAGE,
+        DECLARE_STATEMENT_IN_LINKAGE_SECTION);
   }
 
   @ParameterizedTest