Merge branch 'master' of https://gitea.hb.dhbw-stuttgart.de/i22022/NichtHaskell

Examples/Fakultaet.java

@@ -0,0 +1,20 @@
+class Fakultaet {
+    public int fak(int number) {
+        if (number < 0) {
+            return 1;
+        }
+        int factorial = 1;
+        int i = 1;
+        while(i <= number){
+            factorial = factorial * i;
+            i = i + 1;
+        }
+
+        return factorial;
+    }
+    public static void main(String[] args) {
+        Fakultaet f = new Fakultaet();
+        int result = f.fak(5);
+        print(result);
+    }
+}

Examples/FieldAccessAndMethodCalls.java

@@ -0,0 +1,40 @@
+class FieldAccessAndMethodCalls {
+    public static void main(String[] args) {
+        Class1 c1 = new Class1();
+        int i = c1.c2.c3.m3(1).m2().m1();
+        print(i);
+    }
+}
+
+class Class1{
+    int i1;
+    Class2 c2;
+    public Class1() {
+        this.c2 = new Class2();
+    }
+    public int m1(){
+        return i1;
+    }
+}
+
+class Class2{
+    int i2;
+    Class3 c3;
+    public Class2(){
+        this.c3 = new Class3();
+    }
+    public Class1 m2(){
+        Class1 c1 = new Class1();
+        c1.i1 = i2;
+        return c1;
+    }
+}
+
+class Class3{
+    int i3;
+    public Class2 m3(int i){
+        Class2 c2 = new Class2();
+        c2.i2 = i;
+        return c2;
+    }
+}

src/main/java/Compiler.java

@@ -9,6 +9,7 @@ import org.antlr.v4.runtime.CommonTokenStream;
 import org.antlr.v4.runtime.Token;
 import org.antlr.v4.runtime.tree.ParseTree;
 
+import java.io.Console;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -18,16 +19,15 @@ public class Compiler {
 
     public static void main(String[] args) throws Exception{
 
-        // todo code für jar
-//        if (args.length < 1) {
-//            System.out.println("Usage: java -jar Compiler.jar <file_path> [--suppress-details]");
-//            return;
-//        }
 
-        //String filePath = args[0];
-        String filePath = "src/main/java/TestClass.java";
-        // TODO false setzen für jar-Build
-        boolean suppressDetails = true;
+        if (args.length < 1) {
+            System.out.println("Usage: java -jar Compiler.jar <file_path> [--suppress-details]");
+           return;
+        }
+
+        String filePath = args[0];
+
+        boolean suppressDetails = false;
 
         if (args.length > 1 && args[1].equals("--suppress-details")) {
             suppressDetails = true;
@@ -64,7 +64,7 @@ public class Compiler {
             }
             String readableTokens = stringBuilder.toString().trim();
 
-            System.out.println("The tokens of your input are: \n" + readableTokens);
+            System.out.println("The tokens of your input are: \n" + readableTokens + "\n");
         }
 
 
@@ -80,26 +80,34 @@ public class Compiler {
         if(!suppressDetails) {
             System.out.println("Parsed " + abstractSyntaxTree.classes.size() + " classes: ");
             abstractSyntaxTree.classes.forEach(refType -> {
-                System.out.print(refType.name);
-                if (abstractSyntaxTree.classes.indexOf(refType) < abstractSyntaxTree.classes.size() - 1) {
-                    System.out.print(", ");
-                } else {
+                System.out.println("\t" + refType.name);
+            });
             System.out.println();
         }
-            });
-        }
-//        try {
-//            abstractSyntaxTree.typeCheck();
-//        }catch(TypeCheckException e){
-//            System.out.println("A TypeCheck error occurred. The compilation was stopped.");
-//            System.out.println(e);
-//            return;
-//        }
+
+        try {
             abstractSyntaxTree.typeCheck();
+        }catch(TypeCheckException e){
+            System.out.println("A TypeCheck error was found in you input. Your input was not compiled.");
+            System.out.println(e);
+            return;
+        }catch (Exception e){
+            System.out.println("A unexpected error occurred in TypeCheck.");
+            System.out.println(e);
+            return;
+        }
+
         if(!suppressDetails)
             System.out.println("No TypeCheck errors found.");
 
+        abstractSyntaxTree.codeGen();//todo remove
+        try {
             abstractSyntaxTree.codeGen();
-        System.out.println("Your input was compiled. You can find the output at ???");// todo wo output? überhaupt hinschreiben?
+        }catch (Exception e){
+            System.out.println("A error occurred during code generation. Your input was not compiled.");
+            System.out.println(e);
+            return;
+        }
+        System.out.println("Your input was compiled. You can find the output in your current working directory.");
     }
 }

src/main/java/Decaf.g4

@@ -114,7 +114,7 @@ New     : 'new';
 
 
 //Values
-IntValue : ('+'|'-')*[0-9]+;
+IntValue : ('+'|'-')?[0-9]+;
 CharValue: '\''~[\r\n]?'\'';
 
 

src/main/java/Input.java

@@ -1,13 +1,40 @@
-class Example1b {
-    public int fak(int number){
-        if(number < 0){
-            return 1;
-        }
-        int factorial = 1;
-        int i = 0;
-        while(i < number){
-            factorial = factorial * i;
-        }
-        return factorial;
+class FieldAccessAndMethodCalls {
+    public static void main(String[] args) {
+        Class1 c1 = new Class1();
+        int i = c1.c2.c3.m3(1).m2().m1();
+        System.out.println(i);
+    }
+}
+
+class Class1{
+    int i1;
+    Class2 c2;
+    public Class1() {
+        this.c2 = new Class2();
+    }
+    public int m1(){
+        return i1;
+    }
+}
+
+class Class2{
+    int i2;
+    Class3 c3;
+    public Class2(){
+        this.c3 = new Class3();
+    }
+    public Class1 m2(){
+        Class1 c1 = new Class1();
+        c1.i1 = i2;
+        return c1;
+    }
+}
+
+class Class3{
+    int i3;
+    public Class2 m3(int i){
+        Class2 c2 = new Class2();
+        c2.i2 = i;
+        return c2;
     }
 }

src/main/java/abstractSyntaxTree/Class/FieldDecl.java

@@ -18,9 +18,9 @@ import java.util.Objects;
 
 public class FieldDecl extends AbstractType implements Node {
 
-    public String type; // from parser
-    public String identifier;// from parser
-    public IExpression expression; // value of the field
+    public String type;
+    public String identifier;
+    public IExpression expression;
 
     public FieldDecl(String type, String identifier, IExpression expression){
         this.type = type;
@@ -44,8 +44,6 @@ public class FieldDecl extends AbstractType implements Node {
         setTypeCheckResult(result);
 
         return result;
-
-        //write field table
     }
 
     public void codeGen(ClassWriter cw) {

src/main/java/abstractSyntaxTree/Class/MethodDecl.java

@@ -35,7 +35,6 @@ public class MethodDecl implements Node {
     }
 
     public TypeCheckResult typeCheck(HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext, HashMap<String, HashMap<String, String>> typeContext) throws TypeCheckException {
-        // jede methode als block statement aufrufen und jede neue locale varibale in localvars schreiben
         List<Parameter> parametersList = parameters.parameterList;
         for(Parameter parameter : parametersList){
             localVars.put(parameter.identifier, parameter.type);

src/main/java/abstractSyntaxTree/Class/RefType.java

@@ -68,7 +68,6 @@ public class RefType extends AbstractType implements Node {
 
         // type check each method
         for (MethodDecl methodDecl : methodDecls) {
-//            methodDecl.classThatContainsMethod = this.name;
             methodDecl.typeCheck(methodContext, typeContext);
         }
 

src/main/java/abstractSyntaxTree/Datatype/IDatatype.java

@@ -5,14 +5,9 @@ import TypeCheck.TypeCheckResult;
 import org.objectweb.asm.MethodVisitor;
 
 public interface IDatatype {
-    // typeCheck method
     TypeCheckResult typeCheck() throws TypeCheckException;
 
-    // visit method for code generation
-
     void codeGen(MethodVisitor mv) throws Exception;
 
     TypeCheckResult getTypeCheckResult();
 }
-
-//TODO: Check if we need to differentiate between primitive types and reference types --> for example in "=="

src/main/java/abstractSyntaxTree/Expression/BinaryExpression.java

@@ -58,9 +58,6 @@ public class BinaryExpression extends AbstractType implements IExpression{
                     result.type = "int";
                 }
                 break;
-
-            //case "&" ist für logisches und auf bit level
-            //case "|" ist für logisches oder auf bit level
         }
 
         setTypeCheckResult(result);

src/main/java/abstractSyntaxTree/Expression/IExpression.java

@@ -10,11 +10,7 @@ import java.util.HashMap;
 import java.util.LinkedHashMap;
 
 public interface IExpression extends Node {
-    // typeCheck method
-    //TypeCheckResult typeCheck() throws Exception;
     TypeCheckResult typeCheck(HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext, HashMap<String, HashMap<String, String>> typeContext, HashMap<String, String> localVars) throws TypeCheckException;
-
-    // visit method for code generation
     void codeGen(MethodVisitor mv, LinkedHashMap<String, String> localVars, HashMap<String, HashMap<String, String>> typeContext, HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext) throws Exception;
 
     TypeCheckResult getTypeCheckResult();

src/main/java/abstractSyntaxTree/Program.java

@@ -87,7 +87,6 @@ public class Program implements Node {
             typeContext.put(oneClass.name, classVars);
 
             // build method context
-
             HashMap<String, HashMap<String, ParameterList>> identifierAndMethod = new HashMap<>();
             for (MethodDecl methodDecl : oneClass.methodDecls){
                 if(methodDecl.returnType == null) continue;
@@ -98,8 +97,8 @@ public class Program implements Node {
             methodContext.put(oneClass.name, identifierAndMethod);
         }
 
-        int mainCounter = 0;
         // check if main exists
+        int mainCounter = 0;
         for(RefType oneClass : classes){
             if(oneClass.hasMain)
                 mainCounter++;

src/main/java/abstractSyntaxTree/Statement/BlockStatement.java

@@ -17,13 +17,10 @@ import java.util.List;
 import java.util.Objects;
 
 public class BlockStatement extends AbstractType implements IStatement {
-
-    //We will need a parameter which holds the symbol table
     HashMap<String, String> localVars;
-    public String returnType; // "not" --> not void
+    public String returnType;
     public List<IStatement> statements;
     public String thisClass;
-    // do we need expression, statementexpression
 
     public BlockStatement(List<IStatement> statements, String returnType) {
         this.statements = statements;

src/main/java/abstractSyntaxTree/Statement/IfStatement.java

@@ -14,8 +14,6 @@ import java.util.Objects;
 
 public class IfStatement extends AbstractType implements IStatement{
     public IExpression condition;
-
-    //Do we need a block statement here?
     IStatement ifStatement;
     public String thisClass;
 

src/main/java/abstractSyntaxTree/Statement/PrintStatement.java

@@ -60,9 +60,13 @@ public class PrintStatement extends AbstractType implements IStatement {
             }
             counter++;
         }
-
+        // If not a localVar, maybe a class field of this class
         if (index == -1){
-            throw new Exception("Variable " + variableName + " not found");
+            String typeOfField = typeContext.get(thisClass).get(variableName);
+            if (typeOfField == null){
+                throw new Exception("Variable " + variableName + " not found in local variables or class fields.");
+            }
+            mv.visitFieldInsn(Opcodes.GETSTATIC, thisClass, variableName, "I");
         }
 
         mv.visitVarInsn(Opcodes.ILOAD, index);

src/main/java/abstractSyntaxTree/Statement/ReturnStatement.java

@@ -5,6 +5,7 @@ import TypeCheck.TypeCheckResult;
 import TypeCheck.AbstractType;
 import abstractSyntaxTree.Expression.IExpression;
 import abstractSyntaxTree.Expression.InstVarExpression;
+import abstractSyntaxTree.Expression.LocalVarIdentifier;
 import abstractSyntaxTree.Parameter.ParameterList;
 import abstractSyntaxTree.StatementExpression.MethodCallStatementExpression;
 import org.objectweb.asm.*;
@@ -33,6 +34,8 @@ public class ReturnStatement extends AbstractType implements IStatement{
                 methodCallStatementExpression.thisClass = this.thisClass;
             else if(expression instanceof InstVarExpression instVarExpression)
                     instVarExpression.thisClass = this.thisClass;
+            else if(expression instanceof LocalVarIdentifier localVarIdentifier)
+                localVarIdentifier.thisClass = this.thisClass;
             TypeCheckResult typedExpression = expression.typeCheck(methodContext, typeContext, localVars);
             result.type = typedExpression.type;
         }

src/main/java/abstractSyntaxTree/Statement/WhileStatement.java

@@ -29,7 +29,7 @@ public class WhileStatement extends AbstractType implements IStatement {
         // check condition
         TypeCheckResult conditionType = condition.typeCheck(methodContext, typeContext, localVars);
         if (!conditionType.type.equals("boolean")) {
-            throw new IllegalArgumentException("Expected boolean");
+            throw new TypeCheckException("Condition of while-statement is of type " + conditionType.type + " but should be boolean.");
         }
 
         // check code block

src/main/java/abstractSyntaxTree/StatementExpression/AssignStatementExpression.java

@@ -36,6 +36,7 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
         TypeCheckResult leftType;
 
         if (left instanceof LocalVarIdentifier localVarIdentifier) {
+            localVarIdentifier.thisClass  = thisClass;
             leftType = new TypeCheckResult();
             String identifier = localVarIdentifier.getIdentifier();
             leftType.type = localVars.get(identifier);
@@ -51,6 +52,8 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
         }
         if(right instanceof MethodCallStatementExpression methodCallStatementExpression)
             methodCallStatementExpression.thisClass = this.thisClass;
+        if(right instanceof LocalVarIdentifier localVarIdentifierRight)
+            localVarIdentifierRight.thisClass = this.thisClass;
 
         TypeCheckResult rightType = right.typeCheck(methodContext, typeContext, localVars);
 

src/main/java/abstractSyntaxTree/StatementExpression/MethodCallStatementExpression.java

@@ -34,7 +34,6 @@ public class MethodCallStatementExpression extends AbstractType implements IExpr
 
         String classToSearchMethodIn = thisClass;
 
-        //method is called on something that is not this ???
         if (this.receiver != null) {
             if (!receiver.thisExpression) {
                 classToSearchMethodIn = localVars.get(receiver.identifier);
@@ -51,11 +50,7 @@ public class MethodCallStatementExpression extends AbstractType implements IExpr
                 receiver.instVarExpression.thisClass = this.thisClass;
                 String typeOfSubreceiver = receiver.instVarExpression.typeCheck(methodContext, typeContext, localVars).type;
 
-                String lastField = receiver.instVarExpression.fieldName;
-
                 currentType = typeOfSubreceiver;
-
-                //currentType = typeContext.get(receiver.instVarExpression.getTypeCheckResult().type).get(mostLeftField);
             } else {
                 currentType = classToSearchMethodIn;
             }
@@ -63,16 +58,11 @@ public class MethodCallStatementExpression extends AbstractType implements IExpr
             currentType = thisClass;
         }
 
-        //if classToSearchMethodIn does not contain method, throw exception. go through list and check each
-
         for (int i = 0; i < receivingMethods.size(); i++) {
             currentType = (String) methodContext.get(currentType).get(receivingMethods.get(i).methodName).keySet().toArray()[0];
             if (currentType == null)
                 throw new TypeCheckException("The method " + methodName + " was not found in " + classToSearchMethodIn + ".");
             receivingMethods.get(i).thisClass = this.thisClass;
-
-            // currentType = return type
-            // ThisClass = class von methode
             receivingMethods.get(i).checkParameters(methodContext, typeContext, localVars);
         }
         currentType = (String) methodContext.get(currentType).get(methodName).keySet().toArray()[0];

src/main/java/abstractSyntaxTree/StatementExpression/NewStatementExpression.java

@@ -19,7 +19,7 @@ public class NewStatementExpression extends AbstractType implements IExpression,
 
     public String thisClass;
     private String className;
-    private List<IExpression> arguments; //These need to have a TypeCheckResult
+    private List<IExpression> arguments;
 
     public NewStatementExpression(String className, List<IExpression> arguments) {
         this.className = className;