[Java] add keyword suffix check for java enums

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/java/JavaGenerator.java

@@ -2238,7 +2238,7 @@ private CharSequence generateEnumValues(final List<Token> tokens, final String n
             final Encoding encoding = token.encoding();
             final CharSequence constVal = generateLiteral(encoding.primitiveType(), encoding.constValue().toString());
             generateTypeJavadoc(sb, INDENT, token);
-            sb.append(INDENT).append(token.name()).append('(').append(constVal).append("),\n\n");
+            sb.append(INDENT).append(formatForJavaKeyword(token.name())).append('(').append(constVal).append("),\n\n");
         }
 
         if (shouldDecodeUnknownEnumValues)
@@ -2297,7 +2297,7 @@ private CharSequence generateEnumLookupMethod(final List<Token> tokens, final St
         for (final Token token : tokens)
         {
             final String constStr = token.encoding().constValue().toString();
-            final String name = token.name();
+            final String name = formatForJavaKeyword(token.name());
             sb.append("            case ").append(constStr).append(": return ").append(name).append(";\n");
         }
 

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/java/JavaUtil.java

@@ -155,22 +155,34 @@ public static String javaTypeName(final PrimitiveType primitiveType)
      */
     public static String formatPropertyName(final String value)
     {
-        String formattedValue = Generators.toLowerFirstChar(value);
+        return formatForJavaKeyword(Generators.toLowerFirstChar(value));
+    }
 
-        if (ValidationUtil.isJavaKeyword(formattedValue))
+    /**
+     * Format a name for generated code.
+     * <p>
+     * If the formatted name is a keyword then {@link SbeTool#KEYWORD_APPEND_TOKEN} is appended if set.
+     *
+     * @param value to be formatted.
+     * @return the string formatted as a valid name.
+     * @throws IllegalStateException if a keyword and {@link SbeTool#KEYWORD_APPEND_TOKEN} is not set.
+     */
+    public static String formatForJavaKeyword(final String value)
+    {
+        if (ValidationUtil.isJavaKeyword(value))
         {
             final String keywordAppendToken = System.getProperty(SbeTool.KEYWORD_APPEND_TOKEN);
             if (null == keywordAppendToken)
             {
                 throw new IllegalStateException(
-                    "Invalid property name='" + formattedValue +
+                    "Invalid property name='" + value +
                     "' please correct the schema or consider setting system property: " + SbeTool.KEYWORD_APPEND_TOKEN);
             }
 
-            formattedValue += keywordAppendToken;
+            return value + keywordAppendToken;
         }
 
-        return formattedValue;
+        return value;
     }
 
     /**

sbe-tool/src/test/java/uk/co/real_logic/sbe/generation/java/EnumTest.java

@@ -0,0 +1,102 @@
+/*
+ * Copyright 2013-2024 Real Logic Limited.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package uk.co.real_logic.sbe.generation.java;
+
+import org.agrona.DirectBuffer;
+import org.agrona.MutableDirectBuffer;
+import org.agrona.generation.StringWriterOutputManager;
+import org.junit.jupiter.api.Test;
+import uk.co.real_logic.sbe.SbeTool;
+import uk.co.real_logic.sbe.Tests;
+import uk.co.real_logic.sbe.ir.Ir;
+import uk.co.real_logic.sbe.xml.IrGenerator;
+import uk.co.real_logic.sbe.xml.MessageSchema;
+import uk.co.real_logic.sbe.xml.ParserOptions;
+import uk.co.real_logic.sbe.xml.XmlSchemaParser;
+
+import java.io.InputStream;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.core.StringContains.containsString;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.fail;
+
+class EnumTest
+{
+    private static final Class<?> BUFFER_CLASS = MutableDirectBuffer.class;
+    private static final String BUFFER_NAME = BUFFER_CLASS.getName();
+    private static final Class<DirectBuffer> READ_ONLY_BUFFER_CLASS = DirectBuffer.class;
+    private static final String READ_ONLY_BUFFER_NAME = READ_ONLY_BUFFER_CLASS.getName();
+
+    private StringWriterOutputManager outputManager;
+    private JavaGenerator generator;
+
+    private void setupGenerator(final InputStream in) throws Exception
+    {
+        final ParserOptions options = ParserOptions.builder().stopOnError(true).build();
+        final MessageSchema schema = XmlSchemaParser.parse(in, options);
+        final IrGenerator irg = new IrGenerator();
+        final Ir ir = irg.generate(schema);
+
+        outputManager = new StringWriterOutputManager();
+        outputManager.setPackageName(ir.applicableNamespace());
+        generator = new JavaGenerator(
+            ir, BUFFER_NAME, READ_ONLY_BUFFER_NAME, false, false, false, outputManager);
+    }
+
+    @SuppressWarnings("checkstyle:LineLength")
+    @Test
+    void shouldFailOnKeywordEnumValues() throws Exception
+    {
+        try (InputStream in = Tests.getLocalResource("issue1007.xml"))
+        {
+            setupGenerator(in);
+
+            try
+            {
+                generator.generate();
+            }
+            catch (final IllegalStateException exception)
+            {
+                assertEquals(
+                    "Invalid property name='false' please correct the schema or consider setting system property: sbe.keyword.append.token",
+                    exception.getMessage());
+                return;
+            }
+
+            fail("expected IllegalStateException");
+        }
+    }
+
+    @Test
+    void shouldAddSuffixToEnumValues() throws Exception
+    {
+        System.setProperty(SbeTool.KEYWORD_APPEND_TOKEN, "_");
+
+        try (InputStream in = Tests.getLocalResource("issue1007.xml"))
+        {
+            setupGenerator(in);
+
+            generator.generate();
+            final String sources = outputManager.getSources().toString();
+
+            assertThat(sources, containsString("false_("));
+            assertThat(sources, containsString("true_("));
+            assertThat(sources, containsString("return false_;"));
+            assertThat(sources, containsString("return true_;"));
+        }
+    }
+}

sbe-tool/src/test/resources/issue1007.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<sbe:messageSchema xmlns:sbe="http://fixprotocol.io/2016/sbe"
+                   package="issue1007"
+                   id="1007"
+                   version="0"
+                   semanticVersion="1.0"
+                   description="issue 1007 test case"
+                   byteOrder="bigEndian">
+    <types>
+        <composite name="messageHeader" description="Message identifiers and length of message root">
+            <type name="blockLength" primitiveType="uint16"/>
+            <type name="templateId" primitiveType="uint16"/>
+            <type name="schemaId" primitiveType="uint16"/>
+            <type name="version" primitiveType="uint16"/>
+        </composite>
+        <enum name="MyEnum" encodingType="uint8">
+            <validValue name="false">0</validValue>
+            <validValue name="true">1</validValue>
+        </enum>
+    </types>
+    <sbe:message name="issue1007" id="1" description="issue 1007 test">
+        <field name="constant" type="MyEnum" id="1"/>
+    </sbe:message>
+</sbe:messageSchema>