Code-Statistics/LanguageJava/JavaHandler.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Windows.Forms;
using CodeStatisticsCore.Handling;
using CodeStatisticsCore.Handling.Files;
using CodeStatisticsCore.Handling.Utils;
using LanguageJava.Elements;
using LanguageJava.Handling;
using LanguageJava.Utils;
using File = CodeStatisticsCore.Input.File;
using Type = LanguageJava.Elements.Type;

namespace LanguageJava{
    public class JavaHandler : AbstractLanguageFileHandler{
        public override int Weight{
            get { return 50; }
        }

        protected override string Key{
            get { return "java"; }
        }

        public override void SetupProject(Variables.Root variables){
            base.SetupProject(variables);
            variables.AddStateObject(this,new JavaState());
        }

        public override void Process(File file, Variables.Root variables){
            base.Process(file,variables);

            JavaState state = variables.GetStateObject<JavaState>(this);
            JavaFileInfo info = state.Process(file);

            variables.Increment("javaImportsTotal",info.Imports.Count);
            variables.Maximum("javaImportsMax",info.Imports.Count);

            foreach(Type type in info.Types){
                ProcessType(info.Package,type,variables,false);
            }
        }

        private void ProcessType(string prefix, Type type, Variables.Root variables, bool isNested){
            foreach(Type nestedType in type.NestedTypes){
                ProcessType(prefix+"."+type.Identifier,nestedType,variables,true);
            }

            // declaration type
            variables.Increment("javaTypesTotal");

            string declPrefix = "javaUnknown";

            switch(type.Declaration){
                case Type.DeclarationType.Class: variables.Increment(declPrefix = "javaClasses"); break;
                case Type.DeclarationType.Interface: variables.Increment(declPrefix = "javaInterfaces"); break;
                case Type.DeclarationType.Enum: variables.Increment(declPrefix = "javaEnums"); break;
                case Type.DeclarationType.Annotation: variables.Increment(declPrefix = "javaAnnotations"); break;
            }

            if (isNested){
                variables.Increment(declPrefix+(type.Modifiers.HasFlag(Modifiers.Static) ? "NestedStatic" : "NestedInner"));
            }

            foreach(Modifiers modifier in JavaModifiers.Values.Where(modifier => type.Modifiers.HasFlag(modifier))){
                variables.Increment(declPrefix+JavaModifiers.ToString(modifier).CapitalizeFirst());
            }
            
            // identifier
            TypeIdentifier identifier = new TypeIdentifier(prefix,type.Identifier);

            int simpleNameLength = identifier.Name.Length;
            variables.Increment("javaNamesSimpleTotal",simpleNameLength);
            variables.Minimum("javaNamesSimpleMin",simpleNameLength);
            variables.Maximum("javaNamesSimpleMax",simpleNameLength);

            int fullLength = identifier.FullName.Length;
            variables.Increment("javaNamesFullTotal",fullLength);
            variables.Minimum("javaNamesFullMin",fullLength);
            variables.Maximum("javaNamesFullMax",fullLength);

            JavaGlobalInfo global = variables.GetStateObject<JavaState>(this).GlobalInfo;
            global.IdentifiersSimpleTop.Add(identifier);
            global.IdentifiersSimpleBottom.Add(identifier);
            global.IdentifiersFullTop.Add(identifier);
            global.IdentifiersFullBottom.Add(identifier);

            if (type.Declaration == Type.DeclarationType.Annotation){
                // annotation elements
                int methodCount = type.GetData().Methods.Count;
                variables.Increment("javaAnnotationsElementsTotal",methodCount);
                variables.Minimum("javaAnnotationsElementsMin",methodCount);
                variables.Maximum("javaAnnotationsElementsMax",methodCount);
            }
            else{
                // fields
                List<Field> fields = type.GetData().Fields;
                int fieldsDefault = fields.Count;

                variables.Increment(declPrefix+"FieldsTotal",fields.Count);
                variables.Minimum(declPrefix+"FieldsMin",fields.Count);
                variables.Maximum(declPrefix+"FieldsMax",fields.Count);

                foreach(Modifiers modifier in JavaModifiers.Values){
                    int count = fields.Count(field => field.Modifiers.HasFlag(modifier));
                    if (modifier == Modifiers.Public || modifier == Modifiers.Protected || modifier == Modifiers.Private)fieldsDefault -= count;

                    variables.Increment(declPrefix+"Fields"+JavaModifiers.ToString(modifier).CapitalizeFirst(),count);
                }

                variables.Increment(declPrefix+"FieldsDefaultVisibility",fieldsDefault);

                // methods
                List<Method> constructorMethods = type.GetData().Methods.Where(method => method.IsConstructor).ToList();
                List<Method> classMethods = type.GetData().Methods.Where(method => !method.IsConstructor).ToList();

                int methodsDefault = classMethods.Count;
            
                if (type.GetData().CanHaveConstructors){
                    variables.Increment(declPrefix+"ConstructorsTotal",Math.Max(1,constructorMethods.Count)); // if 0, count an implicit constructor
                }

                variables.Increment(declPrefix+"MethodsTotal",classMethods.Count);
                variables.Minimum(declPrefix+"MethodsMin",classMethods.Count);
                variables.Maximum(declPrefix+"MethodsMax",classMethods.Count);

                foreach(Modifiers modifier in JavaModifiers.Values){
                    int count = classMethods.Count(method => method.Modifiers.HasFlag(modifier));
                    if (modifier == Modifiers.Public || modifier == Modifiers.Protected || modifier == Modifiers.Protected)methodsDefault -= count;

                    variables.Increment(declPrefix+"Methods"+JavaModifiers.ToString(modifier).CapitalizeFirst(),count);
                }

                variables.Increment(declPrefix+"MethodsDefaultVisibility",methodsDefault);
            }

            // enums
            if (type.Declaration == Type.DeclarationType.Enum){
                Type.DataEnum enumData = type.GetData<Type.DataEnum>();
                
                variables.Increment("javaEnumsValuesTotal",enumData.EnumValues.Count);
                variables.Minimum("javaEnumsValuesMin",enumData.EnumValues.Count);
                variables.Maximum("javaEnumsValuesMax",enumData.EnumValues.Count);
            }

            // annotations
            variables.Increment("javaAnnotationsUsedClasses",type.Annotations.Count);

            foreach(Field field in type.GetData().Fields){
                variables.Increment("javaAnnotationsUsedFields",field.Annotations.Count);
            }

            foreach(Method method in type.GetData().Methods){
                variables.Increment("javaAnnotationsUsedMethods",method.Annotations.Count);
            }

            // field and method counting
            variables.Increment("javaFieldsTotal",type.GetData().Fields.Count);
            variables.Increment("javaMethodsTotal",type.GetData().Methods.Count);

            foreach(Method method in type.GetData().Methods){
                variables.Increment("javaMethodParametersTotal",method.ParameterTypes.Count);
                variables.Minimum("javaMethodParametersMin",method.ParameterTypes.Count);
                variables.Maximum("javaMethodParametersMax",method.ParameterTypes.Count);
            }
        }

        public override void FinalizeProject(Variables.Root variables){
            base.FinalizeProject(variables);

            JavaState state = variables.GetStateObject<JavaState>(this);
            JavaGlobalInfo global = state.GlobalInfo;

            // general
            variables.SetVariable("javaPackages",state.PackageCount);

            // imports
            variables.Average("javaImportsAvg","javaImportsTotal","javaCodeFiles");
            variables.Average("javaNamesSimpleAvg","javaNamesSimpleTotal","javaTypesTotal");
            variables.Average("javaNamesFullAvg","javaNamesFullTotal","javaTypesTotal");

            // identifiers
            foreach(TypeIdentifier identifier in global.IdentifiersSimpleTop){
                variables.AddToArray("javaNamesSimpleTop",new { package = identifier.Prefix, name = identifier.Name });
            }

            foreach(TypeIdentifier identifier in global.IdentifiersSimpleBottom.Reverse()){
                variables.AddToArray("javaNamesSimpleBottom",new { package = identifier.Prefix, name = identifier.Name });
            }

            foreach(TypeIdentifier identifier in global.IdentifiersFullTop){
                variables.AddToArray("javaNamesFullTop",new { package = identifier.Prefix, name = identifier.Name });
            }

            foreach(TypeIdentifier identifier in global.IdentifiersFullBottom.Reverse()){
                variables.AddToArray("javaNamesFullBottom",new { package = identifier.Prefix, name = identifier.Name });
            }

            // fields and methods
            variables.Average("javaClassesFieldsAvg","javaClassesFieldsTotal","javaClasses");
            variables.Average("javaClassesConstructorsAvg","javaClassesConstructorsTotal","javaClasses");
            variables.Average("javaClassesMethodsAvg","javaClassesMethodsTotal","javaClasses");
            
            variables.Average("javaInterfacesFieldsAvg","javaInterfacesFieldsTotal","javaInterfaces");
            variables.Average("javaInterfacesMethodsAvg","javaInterfacesMethodsTotal","javaInterfaces");

            variables.Average("javaAnnotationsElementsAvg","javaAnnotationsElementsTotal","javaAnnotations");

            variables.Average("javaMethodParametersAvg","javaMethodParametersTotal","javaMethodsTotal");

            variables.SetVariable("javaMethodsReturnsTotal",state.GlobalInfo.Statements[FlowStatement.Return]);

            foreach(KeyValuePair<string,int> fieldType in global.FieldTypes.ListFromTop()){
                variables.AddToArray("javaFieldTypes",new { type = fieldType.Key, amount = fieldType.Value });
            }

            foreach(KeyValuePair<string,int> methodReturnType in global.MethodReturnTypes.ListFromTop()){
                variables.AddToArray("javaMethodReturnTypes",new { type = methodReturnType.Key, amount = methodReturnType.Value });
            }

            foreach(KeyValuePair<string,int> methodParameterType in global.MethodParameterTypes.ListFromTop()){
                variables.AddToArray("javaMethodParameterTypes",new { type = methodParameterType.Key, amount = methodParameterType.Value });
            }

            // enums
            variables.Average("javaEnumsValuesAvg","javaEnumsValuesTotal","javaEnums");

            // annotations
            List<KeyValuePair<string,int>> annotationUses = global.AnnotationUses.ListFromTop();
            int totalAnnotationsUsed = annotationUses.Sum(kvp => kvp.Value);

            for(int annotationIndex = 0; annotationIndex < Math.Min(annotationUses.Count,10); annotationIndex++){
                variables.AddToArray("javaAnnotationsUsedTop",new { name = annotationUses[annotationIndex].Key, amount = annotationUses[annotationIndex].Value });
            }

            variables.SetVariable("javaAnnotationsUsedTotal",totalAnnotationsUsed);
            variables.SetVariable("javaAnnotationsUsedOther",totalAnnotationsUsed-variables.GetVariable("javaAnnotationsUsedClasses",0)-variables.GetVariable("javaAnnotationsUsedFields",0)-variables.GetVariable("javaAnnotationsUsedMethods",0));

            // control flow
            variables.SetVariable("javaControlFlowIf",state.GlobalInfo.Statements[FlowStatement.If]+state.GlobalInfo.Statements[FlowStatement.Else]);

            variables.SetVariable("javaControlFlowFor",state.GlobalInfo.Statements[FlowStatement.For]);
            variables.SetVariable("javaControlFlowEnhFor",state.GlobalInfo.Statements[FlowStatement.EnhancedFor]);
            variables.SetVariable("javaControlFlowWhile",state.GlobalInfo.Statements[FlowStatement.While]);
            variables.SetVariable("javaControlFlowDoWhile",state.GlobalInfo.Statements[FlowStatement.DoWhile]);

            variables.SetVariable("javaControlFlowSwitch",state.GlobalInfo.Statements[FlowStatement.Switch]);
            variables.SetVariable("javaControlFlowCaseTotal",state.GlobalInfo.Statements[FlowStatement.SwitchCase]);
            variables.SetVariable("javaControlFlowCaseDefaultTotal",state.GlobalInfo.Statements[FlowStatement.SwitchDefault]);

            variables.SetVariable("javaControlFlowCaseMin",state.GlobalInfo.MinSwitchCases);
            variables.SetVariable("javaControlFlowCaseMax",state.GlobalInfo.MaxSwitchCases);
            variables.Average("javaControlFlowCaseAvg","javaControlFlowCaseTotal","javaControlFlowSwitch");
            variables.Percent("javaControlFlowCaseDefaultPerc","javaControlFlowCaseDefaultTotal","javaControlFlowSwitch");
            
            variables.SetVariable("javaControlFlowTry",state.GlobalInfo.Statements[FlowStatement.Try]);
            variables.SetVariable("javaControlFlowTryCatch",state.GlobalInfo.Statements[FlowStatement.TryCatch]);
            variables.SetVariable("javaControlFlowTryWithResources",state.GlobalInfo.Statements[FlowStatement.TryWithResources]);
            variables.SetVariable("javaControlFlowTryCatchFinally",state.GlobalInfo.TryCatchWithFinally);
            variables.SetVariable("javaControlFlowTryWithResourcesFinally",state.GlobalInfo.TryWithResourcesWithFinally);
            variables.Percent("javaControlFlowTryCatchFinallyPerc","javaControlFlowTryCatchFinally","javaControlFlowTry");
            variables.Percent("javaControlFlowTryWithResourcesFinallyPerc","javaControlFlowTryWithResourcesFinally","javaControlFlowTry");

            variables.SetVariable("javaControlFlowCatchTotal",state.GlobalInfo.Statements[FlowStatement.Catch]);
            variables.SetVariable("javaControlFlowCatchMin",state.GlobalInfo.MinCatchBlocks);
            variables.SetVariable("javaControlFlowCatchMax",state.GlobalInfo.MaxCatchBlocks);
            variables.Average("javaControlFlowCatchAvg","javaControlFlowCatchTotal","javaControlFlowTry");
        }

        protected override object GetFileObject(FileIntValue fi, Variables.Root variables){
            JavaState state = variables.GetStateObject<JavaState>(this);
            return new { package = state.GetFile(fi.File).Package.Replace('.','/')+'/', file = Path.GetFileName(fi.File.FullPath), amount = fi.Value };
        }

        public override string PrepareFileContents(string contents){
            return JavaParseUtils.PrepareCodeFile(contents);
        }

        public override IEnumerable<TreeNode> GenerateTreeViewData(Variables.Root variables, File file){
            JavaFileInfo info = variables.GetStateObject<JavaState>(this).GetFile(file);

            foreach(Type type in info.Types){
                yield return GenerateTreeViewDataForType(info,type);
            }
        }

        private TreeNode GenerateTreeViewDataForType(JavaFileInfo fileInfo, Type type){
            Type.TypeData data = type.GetData();
            Type.DataEnum dataEnum = data as Type.DataEnum;

            TreeNode node = new TreeNode(type.ToString());

            if (fileInfo != null){
                TreeNode packageNode = new TreeNode("[Package]");
                packageNode.Nodes.Add(fileInfo.Package);
                node.Nodes.Add(packageNode);

                TreeNode importNode = new TreeNode("[Imports]");
                foreach(Import import in fileInfo.Imports)importNode.Nodes.Add(import.ToString());
                node.Nodes.Add(importNode);
            }

            if (data.Fields.Count > 0){
                TreeNode fieldNode = new TreeNode("[Fields]");
                foreach(Field field in data.Fields)fieldNode.Nodes.Add(field.ToString());
                node.Nodes.Add(fieldNode);
            }

            if (data.Methods.Count > 0){
                TreeNode methodNode = new TreeNode("[Methods]");
                foreach(Method method in data.Methods)methodNode.Nodes.Add(method.ToString());
                node.Nodes.Add(methodNode);
            }
            
            if (type.NestedTypes.Count > 0){
                TreeNode nestedNode = new TreeNode("[Nested Types]");
                foreach(Type nestedType in type.NestedTypes)nestedNode.Nodes.Add(GenerateTreeViewDataForType(null,nestedType));
                node.Nodes.Add(nestedNode);
            }

            if (dataEnum != null){
                TreeNode enumNode = new TreeNode("[Enum Values]");
                foreach(string value in dataEnum.EnumValues)enumNode.Nodes.Add(value);
                node.Nodes.Add(enumNode);
            }

            return node;
        }
    }
}