#105 add SKIP statement (#133)

close #105

Author: sergiuilie

com.ca.lsp.cobol/lsp-core-cobol-parser/src/main/antlr4/com/ca/lsp/core/cobol/parser/CobolParser.g4

@@ -1151,15 +1151,15 @@ paragraph
    ;
 
 sentence
-   : statement* DOT_FS
+   : (statement* DOT_FS) | skipStatement+
    ;
 
 statement
    : acceptStatement | addStatement | alterStatement | callStatement | cancelStatement | closeStatement | computeStatement | continueStatement | deleteStatement | disableStatement |
     displayStatement | divideStatement | enableStatement | entryStatement | evaluateStatement | exhibitStatement | execCicsStatement | execSqlStatement | execSqlImsStatement | 
     exitStatement | generateStatement | gobackStatement | goToStatement | ifStatement | initializeStatement | initiateStatement | inspectStatement | mergeStatement | moveStatement | 
     multiplyStatement | openStatement | performStatement | purgeStatement | readStatement | receiveStatement | releaseStatement | returnStatement | rewriteStatement | searchStatement | 
-    sendStatement | serviceReloadStatement | serviceLabelStatement | setStatement | skipStatement | sortStatement | startStatement | stopStatement | stringStatement | subtractStatement | 
+    sendStatement | serviceReloadStatement | serviceLabelStatement | setStatement | sortStatement | startStatement | stopStatement | stringStatement | subtractStatement |
     terminateStatement | titleStatement | unstringStatement | writeStatement | xmlStatement
    ;
 

com.ca.lsp.cobol/lsp-core-cobol-parser/src/main/antlr4/com/ca/lsp/core/cobol/parser/CobolPreprocessor.g4

@@ -74,7 +74,7 @@ paragraphs2
    ;
 
 sentence
-   : statement+ DOT_FS
+   : (statement+ DOT_FS) | skipNoStatement+
    ;
 
 //all the possible combinations to form a statement, super-nongreddy
@@ -83,7 +83,7 @@ statement
      continueStatement | deleteStatement | disableStatement | displayStatement | divideStatement |  enableStatement | entryStatement | evaluateStatement |
      exitStatement | generateStatement | gobackStatement | goStatement | ifStatement | initializeStatement | initiateStatement | inspectStatement | mergeStatement |
      multiplyStatement | openStatement | performStatement | purgeStatement | readStatement | receiveStatement | releaseStatement | returnStatement | rewriteStatement |
-     searchStatement | sendStatement | setStatement | skipNoStatement | sortStatement | startStatement | stopStatement | stringStatement | subtractStatement | terminateStatement |
+     searchStatement | sendStatement | setStatement | sortStatement | startStatement | stopStatement | stringStatement | subtractStatement | terminateStatement |
      titleStatement | unstringStatement | useStatement | writeStatement | xmlStatement |execSqlStatement | execSqlImsStatement | execCicsStatement | copyStatement
    ;
 

com.ca.lsp.cobol/lsp-service-cobol/src/test/java/com/ca/lsp/cobol/usecases/TestSkipStatement.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2020 Broadcom.
+ * The term "Broadcom" refers to Broadcom Inc. and/or its subsidiaries.
+ *
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *    Broadcom, Inc. - initial API and implementation
+ */
+
+package com.ca.lsp.cobol.usecases;
+
+import org.junit.Test;
+
+public class TestSkipStatement extends PositiveUseCase {
+
+  private static final String TEXT =
+      "        IDENTIFICATION DIVISION. \r\n"
+          + "        PROGRAM-ID. SKIP_TEST.\r\n"
+          + "        DATA DIVISION.\r\n"
+          + "        WORKING-STORAGE SECTION.   \r\n"
+          + "        PROCEDURE DIVISION.\r\n"
+          + "       PROGA.\r\n"
+          + "       SKIP1\r\n"
+          + "           PERFORM WITH TEST BEFORE UNTIL ID0 = 0\r\n"
+          + "             SUBTRACT 1 FROM TAPARM1\r\n"
+          + "             CALL 'ID1'\r\n"
+          + "           END-PERFORM\r\n"
+          + "           .\r\n"
+          + "        SKIP2.\r\n"
+          + "        PROGB.\r\n"
+          + "        EXIT.\r\n"
+          + "        EJECT";
+
+  public TestSkipStatement() {
+    super(TEXT);
+  }
+
+  @Test
+  public void test() {
+    super.test();
+  }
+}

com.ca.lsp.cobol/lsp-service-cobol/src/test/java/com/ca/lsp/cobol/usecases/UseCaseSuite.java

@@ -22,6 +22,7 @@
 @SuiteClasses({
   TestFormatTrim.class,
   TestSyntaxError.class,
+  TestSkipStatement.class,
   TestVaryingCorrect.class,
   AnalyzeCopybookCaching.class,
   TestPerformUntilCorrect.class,