private void generateEnum()

in activemq-protobuf/src/main/java/org/apache/activemq/protobuf/compiler/AltJavaGenerator.java [2034:2131]
83 lines of code
8 McCabe index (conditional complexity)

    private void generateEnum(EnumDescriptor ed) {
        String uname = uCamel(ed.getName());

        String staticOption = "static ";
        if( multipleFiles && ed.getParent()==null ) {
            staticOption="";
        }

        // TODO Auto-generated method stub
        p();
        p("public "+staticOption+"enum " +uname + " {");
        indent();
        
        
        p();
        int counter=0;
        for (EnumFieldDescriptor field : ed.getFields().values()) {
            boolean last = counter+1 == ed.getFields().size();
            p(field.getName()+"(\""+field.getName()+"\", "+field.getValue()+")"+(last?";":",")); 
            counter++;
        }
        p();
        p("private final String name;");
        p("private final int value;");
        p();
        p("private "+uname+"(String name, int value) {");
        p("   this.name = name;");
        p("   this.value = value;");
        p("}");
        p();
        p("public final int getNumber() {");
        p("   return value;");
        p("}");
        p();
        p("public final String toString() {");
        p("   return name;");
        p("}");
        p();
        p("public static "+uname+" valueOf(int value) {");
        p("   switch (value) {");
        
        // It's possible to define multiple ENUM fields with the same value.. 
        //   we only want to put the first one into the switch statement.
        HashSet<Integer> values = new HashSet<Integer>();
        for (EnumFieldDescriptor field : ed.getFields().values()) {
            if( !values.contains(field.getValue()) ) {
                p("   case "+field.getValue()+":");
                p("      return "+field.getName()+";");
                values.add(field.getValue());
            }
            
        }
        p("   default:");
        p("      return null;");
        p("   }");
        p("}");
        p();
        
        
        String createMessage = getOption(ed.getOptions(), "java_create_message", null);        
        if( "true".equals(createMessage) ) {
            
            p("public interface "+uname+"Creatable {");
            indent();
            p(""+uname+" to"+uname+"();");
            unindent();
            p("}");
            p();
            
            p("public "+uname+"Creatable createBean() {");
            indent();
            p("switch (this) {");
            indent();
            for (EnumFieldDescriptor field : ed.getFields().values()) {
                p("case "+field.getName()+":");
                String type = field.getAssociatedType().getName();
                p("   return new "+javaRelatedType(type, "Bean")+"();");
            }
            p("default:");
            p("   return null;");
            unindent();
            p("}");
            unindent();
            p("}");
            p();
            
            generateParseDelegate(ed, "parseUnframed", "org.apache.activemq.protobuf.Buffer", "org.apache.activemq.protobuf.InvalidProtocolBufferException");
            generateParseDelegate(ed, "parseFramed", "org.apache.activemq.protobuf.Buffer", "org.apache.activemq.protobuf.InvalidProtocolBufferException");
            generateParseDelegate(ed, "parseUnframed", "byte[]", "org.apache.activemq.protobuf.InvalidProtocolBufferException");
            generateParseDelegate(ed, "parseFramed", "byte[]", "org.apache.activemq.protobuf.InvalidProtocolBufferException");
            generateParseDelegate(ed, "parseFramed", "org.apache.activemq.protobuf.CodedInputStream", "org.apache.activemq.protobuf.InvalidProtocolBufferException, java.io.IOException");
            generateParseDelegate(ed, "parseFramed", "java.io.InputStream", "org.apache.activemq.protobuf.InvalidProtocolBufferException, java.io.IOException");
        }
        
        unindent();
        p("}");
        p();
    }