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

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KingJulian 2024-07-05 11:31:54 +02:00
commit 0593d988b4
38 changed files with 119 additions and 318 deletions
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6
.idea/misc.xml generated
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@ -24,7 +24,11 @@
</list>
</option>
</component>
<component name="ProjectRootManager" version="2" languageLevel="JDK_X" default="true" project-jdk-name="openjdk-22" project-jdk-type="JavaSDK">
<component name="PWA">
<option name="enabled" value="true" />
<option name="wasEnabledAtLeastOnce" value="true" />
</component>
<component name="ProjectRootManager" version="2" languageLevel="JDK_22" default="true" project-jdk-name="openjdk-22" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/target" />
</component>
</project>

0
Compilerbau Klassendiagramm.pdf → Documentation/Compilerbau Klassendiagramm.pdf
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Documentation/DokumentationNichtHaskell.pdf Normal file
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2
Readme.MD
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@ -1,3 +1,3 @@
Dies ist das Repository des Mini-Java-Compiler-Bauprojekt der Gruppe NichtHaskell für das 4. Semester Informatik der Dualen Hochschule Baden-Württemberg in Stuttgart (Horb).
Alles Weitere ist in der Dokumentation (///verlinken////) unter ///////pfad////// zu finden.
Alles weitere ist in der Dokumentation DokumentationNichtHaskell.pdf unter `/Documentation/DokumentationNichtHaskell.pdf` zu finden.

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jar/NichtHaskell.jar Normal file
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jar/NichtHaskellCompiler-jar-with-dependencies.jar Normal file
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1
pom.xml
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@ -26,6 +26,7 @@
<mainClass>Compiler</mainClass>
</manifest>
</archive>
<finalName>NichtHaskellCompiler</finalName>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>

33
src/main/java/CodeGen/CodeGenHelper.java Normal file
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@ -0,0 +1,33 @@
package CodeGen;
import java.util.LinkedHashMap;
public class CodeGenHelper {
public static String getFieldDescriptor(String type) {
switch (type) {
case "int":
return "I";
case "boolean":
return "Z";
case "char":
return "C";
default:
return "L" + type + ";";
}
}
public static int GetLocalVarIndex(LinkedHashMap<String, String> localVars, String varToSearchFor) {
int index = -1;
int counter = 0;
for (String key : localVars.keySet()) {
if (key.equals(varToSearchFor)) {
index = counter + 1; // +1 because the first local variable is at index 1, 0 is used for "this"
break;
}
counter++;
}
return index;
}
}

6
src/main/java/Compiler.java
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@ -22,10 +22,11 @@ public class Compiler {
if (args.length < 1) {
System.out.println("Usage: java -jar Compiler.jar <file_path> [--suppress-details]");
return;
//return;
}
String filePath = args[0];
//String filePath = args[0];
String filePath = "src/CharArgument.java";
boolean suppressDetails = false;
@ -101,6 +102,7 @@ public class Compiler {
System.out.println("No TypeCheck errors found.");
abstractSyntaxTree.codeGen();//todo remove
try {
abstractSyntaxTree.codeGen();
}catch (Exception e){

3
src/main/java/EmptyClass.java
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@ -1,3 +0,0 @@
class EmptyClass {
}

40
src/main/java/Input.java
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@ -1,40 +0,0 @@
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;
}
}

18
src/main/java/abstractSyntaxTree/Class/FieldDecl.java
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@ -1,12 +1,12 @@
package abstractSyntaxTree.Class;
import CodeGen.CodeGenHelper;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckHelper;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Expression.IExpression;
import abstractSyntaxTree.Node;
import abstractSyntaxTree.Program;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Opcodes;
@ -47,23 +47,11 @@ public class FieldDecl extends AbstractType implements Node {
}
public void codeGen(ClassWriter cw) {
FieldVisitor fv = cw.visitField(Opcodes.ACC_PUBLIC, identifier, getFieldDescriptor(), null, null);
String descriptor = CodeGenHelper.getFieldDescriptor(type);
FieldVisitor fv = cw.visitField(Opcodes.ACC_PUBLIC, identifier, descriptor, null, null);
fv.visitEnd();
}
private String getFieldDescriptor() {
switch (type) {
case "int":
return "I";
case "boolean":
return "Z";
case "char":
return "C";
default:
return "L" + type + ";";
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;

18
src/main/java/abstractSyntaxTree/Class/MethodDecl.java
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@ -1,13 +1,12 @@
package abstractSyntaxTree.Class;
import CodeGen.CodeGenHelper;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Node;
import abstractSyntaxTree.Parameter.Parameter;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.Program;
import abstractSyntaxTree.Statement.BlockStatement;
import abstractSyntaxTree.Statement.IStatement;
import org.objectweb.asm.*;
import java.util.*;
@ -91,7 +90,7 @@ public class MethodDecl implements Node {
default -> mv.visitInsn(Opcodes.ACONST_NULL);
}
}
descriptor = getFieldDescriptor(field.type);
descriptor = CodeGenHelper.getFieldDescriptor(field.type);
mv.visitFieldInsn(Opcodes.PUTFIELD, classThatContainsMethod, fieldName, descriptor);
fieldFound = true;
break;
@ -215,19 +214,6 @@ public class MethodDecl implements Node {
return descriptor.toString();
}
private String getFieldDescriptor(String type) {
switch (type) {
case "int":
return "I";
case "boolean":
return "Z";
case "char":
return "C";
default:
return "L" + type + ";";
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;

1
src/main/java/abstractSyntaxTree/Class/RefType.java
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@ -3,7 +3,6 @@ package abstractSyntaxTree.Class;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Expression.IExpression;
import abstractSyntaxTree.Node;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.Statement.BlockStatement;

1
src/main/java/abstractSyntaxTree/Datatype/BoolDatatype.java
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@ -2,7 +2,6 @@ package abstractSyntaxTree.Datatype;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Class.RefType;
import org.objectweb.asm.*;
import java.util.Objects;

13
src/main/java/abstractSyntaxTree/Datatype/CharDatatype.java
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@ -3,6 +3,7 @@ package abstractSyntaxTree.Datatype;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckResult;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import java.util.Objects;
@ -21,11 +22,13 @@ public class CharDatatype extends AbstractType implements IDatatype{
@Override
public void codeGen(MethodVisitor mv) throws Exception {
// Possible use of BIPUSH and SIPUSH if the value is small enough
//This saves space in the bytecode which is not very relevant at this point, but could be implemented anyway
mv.visitLdcInsn((int)value);
if (value <= 5) {
mv.visitInsn(Opcodes.ICONST_0 + value);
} else if (value <= Byte.MAX_VALUE) {
mv.visitIntInsn(Opcodes.BIPUSH, value);
} else {
mv.visitIntInsn(Opcodes.SIPUSH, value);
}
}
@Override
public boolean equals(Object o) {

2
src/main/java/abstractSyntaxTree/Datatype/IntDatatype.java
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@ -21,8 +21,6 @@ public class IntDatatype extends AbstractType implements IDatatype{
@Override
public void codeGen(MethodVisitor mv) throws Exception {
//Example of using BIPUSH and SIPUSH for optimizing bytecode size
if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE)
mv.visitIntInsn(Opcodes.BIPUSH, value);
else if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE)

8
src/main/java/abstractSyntaxTree/Expression/BinaryExpression.java
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@ -7,7 +7,6 @@ import TypeCheck.AbstractType;
import abstractSyntaxTree.Parameter.ParameterList;
import org.objectweb.asm.*;
import java.beans.Expression;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Objects;
@ -15,8 +14,9 @@ import java.util.Objects;
public class BinaryExpression extends AbstractType implements IExpression{
public String operator;
public IExpression left; // This needs TypeCheckResult
public IExpression left;
public IExpression right;
public String thisClass;
public BinaryExpression(String operator, IExpression left, IExpression right) {
this.operator = operator;
@ -28,6 +28,10 @@ public class BinaryExpression extends AbstractType implements IExpression{
public TypeCheckResult typeCheck(HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext, HashMap<String, HashMap<String, String>> typeContext, HashMap<String, String> localVars) throws TypeCheckException {
TypeCheckResult result = new TypeCheckResult();
if(left instanceof LocalVarIdentifier localVarIdentifier)
localVarIdentifier.thisClass = this.thisClass;
if(right instanceof LocalVarIdentifier localVarIdentifier)
localVarIdentifier.thisClass = this.thisClass;
TypeCheckResult leftType = left.typeCheck(methodContext, typeContext, localVars);
TypeCheckResult rightType = right.typeCheck(methodContext, typeContext, localVars);

2
src/main/java/abstractSyntaxTree/Expression/BooleanConstantExpression.java
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@ -1,9 +1,7 @@
package abstractSyntaxTree.Expression;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Datatype.BoolDatatype;
import abstractSyntaxTree.Parameter.ParameterList;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

8
src/main/java/abstractSyntaxTree/Expression/CharConstantExpression.java
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@ -27,7 +27,13 @@ public class CharConstantExpression extends AbstractType implements IExpression{
@Override
public void codeGen(MethodVisitor mv, LinkedHashMap<String, String> localVars, HashMap<String, HashMap<String, String>> typeContext, HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext) throws Exception {
mv.visitIntInsn(Opcodes.BIPUSH, (int) value);
if (value <= 5) {
mv.visitInsn(Opcodes.ICONST_0 + value);
} else if (value <= Byte.MAX_VALUE) {
mv.visitIntInsn(Opcodes.BIPUSH, value);
} else {
mv.visitIntInsn(Opcodes.SIPUSH, value);
}
}
@Override

64
src/main/java/abstractSyntaxTree/Expression/InstVarExpression.java
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@ -1,13 +1,11 @@
package abstractSyntaxTree.Expression;
import CodeGen.CodeGenHelper;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Class.RefType;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.StatementExpression.ReceivingMethod;
import gen.DecafParser;
import jdk.jshell.spi.ExecutionControl;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
@ -74,15 +72,7 @@ public class InstVarExpression extends AbstractType implements IExpression {
if (i == 0) {
// Load the local variable onto the stack
int index = -1;
int counter = 0;
for (String key : localVars.keySet()) {
if (key.equals(this.receivers.get(i).identifier)) {
index = counter + 1; // +1 because the first local variable is at index 1, 0 is used for "this"
break;
}
counter++;
}
int index = CodeGenHelper.GetLocalVarIndex(localVars, this.receivers.get(i).identifier);
if (index == -1) {
if (typeContext.get(thisClass).get(this.receivers.get(i).identifier) != null) {
@ -91,7 +81,7 @@ public class InstVarExpression extends AbstractType implements IExpression {
typeOfReciever = typeContext.get(typeOfReciever).get(this.receivers.get(i).identifier);
descriptor = getFieldDescriptor(typeContext, typeOfReciever);
descriptor = getFieldDescriptor(typeOfReciever);
// Load the variable onto the stack
mv.visitFieldInsn(Opcodes.GETFIELD, classOfField, receivers.get(i).identifier, descriptor);
@ -107,27 +97,13 @@ public class InstVarExpression extends AbstractType implements IExpression {
// Get the class of the receiver
typeOfReciever = localVars.get(this.receivers.get(i).identifier);
/*
descriptor = getFieldDescriptor(typeContext, typeOfReciever, typeOfReciever);
mv.visitFieldInsn(Opcodes.GETFIELD, thisClass, fieldName, descriptor);
*/
continue;
}
}
// Not the first receiver
else {
// Load the local variable onto the stack
int index = -1;
int counter = 0;
for (String key : localVars.keySet()) {
if (key.equals(this.receivers.get(i).identifier)) {
index = counter + 1; // +1 because the first local variable is at index 1, 0 is used for "this"
break;
}
counter++;
}
int index = CodeGenHelper.GetLocalVarIndex(localVars, this.receivers.get(i).identifier);
if (index == -1) {
if (typeContext.get(typeOfReciever).get(this.receivers.get(i).identifier) != null) {
@ -136,7 +112,7 @@ public class InstVarExpression extends AbstractType implements IExpression {
typeOfReciever = typeContext.get(typeOfReciever).get(this.receivers.get(i).identifier);
descriptor = getFieldDescriptor(typeContext, typeOfReciever);
descriptor = getFieldDescriptor(typeOfReciever);
// Load the variable onto the stack
mv.visitFieldInsn(Opcodes.GETFIELD, classOfField, receivers.get(i).identifier, descriptor);
@ -148,7 +124,7 @@ public class InstVarExpression extends AbstractType implements IExpression {
} else {
typeOfReciever = localVars.get(this.receivers.get(i).identifier);
descriptor = getFieldDescriptor(typeContext, typeOfReciever);
descriptor = getFieldDescriptor(typeOfReciever);
mv.visitFieldInsn(Opcodes.GETFIELD, typeOfReciever, fieldName, descriptor);
}
@ -157,15 +133,7 @@ public class InstVarExpression extends AbstractType implements IExpression {
// Load the field in fieldName
// Load the local variable onto the stack
int index = -1;
int counter = 0;
for (String key : localVars.keySet()) {
if (key.equals(fieldName)) {
index = counter + 1; // +1 because the first local variable is at index 1, 0 is used for "this"
break;
}
counter++;
}
int index = CodeGenHelper.GetLocalVarIndex(localVars, fieldName);
if (index == -1) {
if (typeContext.get(typeOfReciever).get(fieldName) != null) {
@ -174,7 +142,7 @@ public class InstVarExpression extends AbstractType implements IExpression {
typeOfReciever = typeContext.get(typeOfReciever).get(fieldName);
descriptor = getFieldDescriptor(typeContext, typeOfReciever);
descriptor = getFieldDescriptor(typeOfReciever);
// Load the variable onto the stack
mv.visitFieldInsn(Opcodes.GETFIELD, classOfField, fieldName, descriptor);
@ -186,21 +154,13 @@ public class InstVarExpression extends AbstractType implements IExpression {
} else {
typeOfReciever = localVars.get(fieldName);
descriptor = getFieldDescriptor(typeContext, typeOfReciever);
descriptor = getFieldDescriptor(typeOfReciever);
mv.visitFieldInsn(Opcodes.GETFIELD, typeOfReciever, fieldName, descriptor);
}
} else if (receivers.get(0).thisExpression) {
// Load the local variable or instVar of this onto the stack
int index = -1;
int counter = 0;
for (String key : localVars.keySet()) {
if (key.equals(fieldName)) {
index = counter + 1; // +1 because the first local variable is at index 1, 0 is used for "this"
break;
}
counter++;
}
int index = CodeGenHelper.GetLocalVarIndex(localVars, fieldName);
if (index == -1) {
mv.visitVarInsn(Opcodes.ALOAD, 0);
@ -210,14 +170,14 @@ public class InstVarExpression extends AbstractType implements IExpression {
}
String fieldType = typeContext.get(thisClass).get(fieldName);
descriptor = getFieldDescriptor(typeContext, fieldType);
descriptor = getFieldDescriptor(fieldType);
//Load the field onto the stack
mv.visitFieldInsn(Opcodes.GETFIELD, thisClass, fieldName, descriptor);
}
}
private String getFieldDescriptor(HashMap<String, HashMap<String, String>> typeContext, String fieldType) {
private String getFieldDescriptor(String fieldType) {
StringBuilder descriptor = new StringBuilder();

11
src/main/java/abstractSyntaxTree/Expression/IntConstantExpression.java
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@ -28,8 +28,15 @@ public class IntConstantExpression extends AbstractType implements IExpression{
@Override
public void codeGen(MethodVisitor mv, LinkedHashMap<String, String> localVars, HashMap<String, HashMap<String, String>> typeContext, HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext) throws Exception {
//TODO: When we are finished this can be done more efficiently
mv.visitLdcInsn(value);
if (value >= -1 && value <= 5) {
mv.visitInsn(Opcodes.ICONST_0 + value);
} else if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE) {
mv.visitIntInsn(Opcodes.BIPUSH, value);
} else if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE) {
mv.visitIntInsn(Opcodes.SIPUSH, value);
} else {
mv.visitLdcInsn(value);
}
}
@Override

31
src/main/java/abstractSyntaxTree/Expression/LocalVarIdentifier.java
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@ -1,8 +1,8 @@
package abstractSyntaxTree.Expression;
import CodeGen.CodeGenHelper;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckHelper;
import TypeCheck.TypeCheckResult;
import org.objectweb.asm.*;
@ -11,7 +11,6 @@ import java.util.LinkedHashMap;
import abstractSyntaxTree.Parameter.ParameterList;
import org.objectweb.asm.MethodVisitor;
import java.util.HashMap;
import java.util.Objects;
public class LocalVarIdentifier extends AbstractType implements IExpression{
@ -52,15 +51,7 @@ public class LocalVarIdentifier extends AbstractType implements IExpression{
if (localVars.containsKey(identifier)) {
type = localVars.get(identifier);
// Find the index of the variable
int index = -1;
int counter = 0;
for (String key : localVars.keySet()) {
if (key.equals(identifier)) {
index = counter + 1; // +1 because the first local variable is at index 1, 0 is used for "this"
break;
}
counter++;
}
int index = CodeGenHelper.GetLocalVarIndex(localVars, identifier);
if (index == -1) {
throw new Exception("Variable " + identifier + " not found");
@ -84,25 +75,13 @@ public class LocalVarIdentifier extends AbstractType implements IExpression{
// Load "this" onto the stack
mv.visitVarInsn(Opcodes.ALOAD, 0);
// Get the field from "this"
mv.visitFieldInsn(Opcodes.GETFIELD, thisClass, identifier, getFieldDescriptor(type));
String descriptor = CodeGenHelper.getFieldDescriptor(type);
mv.visitFieldInsn(Opcodes.GETFIELD, thisClass, identifier, descriptor);
} else
throw new Exception("Variable " + identifier + " not found");
}
//TODO move this to a helper class and remove the doubled code in MethodDecl and in other places
private String getFieldDescriptor(String type) {
switch (type) {
case "int":
return "I";
case "boolean":
return "Z";
case "char":
return "C";
default:
return "L" + type + ";";
}
}
@Override
public TypeCheckResult getTypeCheckResult() {
return super.getTypeCheckResult();

2
src/main/java/abstractSyntaxTree/Expression/UnaryExpression.java
View File

@ -2,9 +2,7 @@ package abstractSyntaxTree.Expression;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckHelper;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Datatype.IDatatype;
import abstractSyntaxTree.Parameter.ParameterList;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

4
src/main/java/abstractSyntaxTree/Statement/BlockStatement.java
View File

@ -3,8 +3,6 @@ package abstractSyntaxTree.Statement;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckResult;
import TypeCheck.AbstractType;
import abstractSyntaxTree.Class.FieldDecl;
import abstractSyntaxTree.Parameter.Parameter;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.StatementExpression.AssignStatementExpression;
import abstractSyntaxTree.StatementExpression.MethodCallStatementExpression;
@ -77,7 +75,7 @@ public class BlockStatement extends AbstractType implements IStatement {
}
if (typeOfCurrentStatement.type.contains(",")) {
// else if has 2 returns, all code paths must retrun a value.
// else if has 2 returns, all code paths must return a value.
String[] substrings = typeOfCurrentStatement.type.split(",");
String firstType = substrings[0];

3
src/main/java/abstractSyntaxTree/Statement/EmptyStatement.java
View File

@ -7,8 +7,7 @@ import org.objectweb.asm.MethodVisitor;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Objects;
public class EmptyStatement extends AbstractType implements IStatement{

4
src/main/java/abstractSyntaxTree/Statement/IfElseStatement.java
View File

@ -9,7 +9,6 @@ import org.objectweb.asm.*;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Objects;
public class IfElseStatement extends AbstractType implements IStatement{
@ -54,9 +53,6 @@ public class IfElseStatement extends AbstractType implements IStatement{
}
//TODO: There are 2 NOPs and one athrow on the stack between the if-Block and else-Block execution --> I have no idea why
// I think they are generated because of the jump operations below and can not be eliminated
// as they do not negatively impact the execution of the code logic wise we can ignore them
@Override
public void codeGen(MethodVisitor mv, LinkedHashMap<String, String> localVars, HashMap<String, HashMap<String, String>> typeContext, HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext) throws Exception {

1
src/main/java/abstractSyntaxTree/Statement/IfStatement.java
View File

@ -9,7 +9,6 @@ import org.objectweb.asm.*;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Objects;
public class IfStatement extends AbstractType implements IStatement{

15
src/main/java/abstractSyntaxTree/Statement/LocalVarDecl.java
View File

@ -1,5 +1,6 @@
package abstractSyntaxTree.Statement;
import CodeGen.CodeGenHelper;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckHelper;
@ -7,7 +8,6 @@ import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Expression.IExpression;
import abstractSyntaxTree.Expression.LocalVarIdentifier;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.StatementExpression.AssignStatementExpression;
import abstractSyntaxTree.StatementExpression.MethodCallStatementExpression;
import abstractSyntaxTree.StatementExpression.NewStatementExpression;
import org.objectweb.asm.MethodVisitor;
@ -59,15 +59,8 @@ public class LocalVarDecl extends AbstractType implements IStatement{
public void codeGen(MethodVisitor mv, LinkedHashMap<String, String> localVars, HashMap<String, HashMap<String, String>> typeContext, HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext) throws Exception {
localVars.put(identifier, type);
int index = -1;
int counter = 0;
for (String key : localVars.keySet()){
if (key.equals(identifier)){
index = counter+1; // +1 because the first local variable is at index 1, 0 is used for "this"
break;
}
counter++;
}
int index = CodeGenHelper.GetLocalVarIndex(localVars, identifier);
if (index == -1){
throw new Exception("Variable " + identifier + " not found");
@ -86,7 +79,7 @@ public class LocalVarDecl extends AbstractType implements IStatement{
}
} else {
// Set a default value for the variable --> less problems
// Set a default value for the variable --> fewer problems
switch (type) {
case "int", "boolean", "char":
mv.visitInsn(Opcodes.ICONST_0);

12
src/main/java/abstractSyntaxTree/Statement/PrintStatement.java
View File

@ -1,5 +1,6 @@
package abstractSyntaxTree.Statement;
import CodeGen.CodeGenHelper;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckResult;
@ -51,15 +52,8 @@ public class PrintStatement extends AbstractType implements IStatement {
mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
// Load the value of the variable onto the stack
int index = -1;
int counter = 0;
for (String key : localVars.keySet()){
if (key.equals(variableName)){
index = counter+1; // +1 because the first local variable is at index 1, 0 is used for "this"
break;
}
counter++;
}
int index = CodeGenHelper.GetLocalVarIndex(localVars, variableName);
// If not a localVar, maybe a class field of this class
if (index == -1){
String typeOfField = typeContext.get(thisClass).get(variableName);

1
src/main/java/abstractSyntaxTree/Statement/ReturnStatement.java
View File

@ -12,7 +12,6 @@ import org.objectweb.asm.*;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Objects;
public class ReturnStatement extends AbstractType implements IStatement{

1
src/main/java/abstractSyntaxTree/Statement/WhileStatement.java
View File

@ -9,7 +9,6 @@ import org.objectweb.asm.*;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Objects;
public class WhileStatement extends AbstractType implements IStatement {

93
src/main/java/abstractSyntaxTree/StatementExpression/AssignStatementExpression.java
View File

@ -1,15 +1,16 @@
package abstractSyntaxTree.StatementExpression;
import CodeGen.CodeGenHelper;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckHelper;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Expression.BinaryExpression;
import abstractSyntaxTree.Expression.IExpression;
import abstractSyntaxTree.Expression.InstVarExpression;
import abstractSyntaxTree.Expression.LocalVarIdentifier;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.Statement.IStatement;
import abstractSyntaxTree.Statement.WhileStatement;
import org.objectweb.asm.*;
import java.util.HashMap;
@ -41,7 +42,7 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
String identifier = localVarIdentifier.getIdentifier();
leftType.type = localVars.get(identifier);
// local var may be actually instvar of this
// local var may be actually instVar of this
if(leftType.type == null){
leftType.type = typeContext.get(thisClass).get(identifier);
}
@ -54,6 +55,8 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
methodCallStatementExpression.thisClass = this.thisClass;
if(right instanceof LocalVarIdentifier localVarIdentifierRight)
localVarIdentifierRight.thisClass = this.thisClass;
if(right instanceof BinaryExpression binaryExpression)
binaryExpression.thisClass = this.thisClass;
TypeCheckResult rightType = right.typeCheck(methodContext, typeContext, localVars);
@ -81,15 +84,7 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
String varName = localVar.getIdentifier();
//Get the index of the local variable
int index = -1;
int counter = 0;
for (String key : localVars.keySet()) {
if (key.equals(varName)) {
index = counter + 1;
break;
}
counter++;
}
int index = CodeGenHelper.GetLocalVarIndex(localVars, varName);
if (index == -1) {
String fieldType = typeContext.get(thisClass).get(varName);
@ -129,15 +124,8 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
// Determine if the reference is this or another object
if (instVar.receivers.get(0).identifier != null) {
// Load the local variable (another object) onto the stack
int index = -1;
int counter = 0;
for (String key : localVars.keySet()) {
if (key.equals(instVar.receivers.get(0).identifier)) {
index = counter + 1; // Local variables start at index 1, 0 is "this"
break;
}
counter++;
}
int index = CodeGenHelper.GetLocalVarIndex(localVars, instVar.receivers.get(0).identifier);
if (index == -1) {
throw new Exception("Variable " + instVar.receivers.get(0).identifier + " not found");
}
@ -149,10 +137,6 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
}
// Call the codeGen on the right expression which will push the value of the right expression onto the stack
//right.codeGen(mv, localVars, typeContext, methodContext);
//Now that the base ref is on the stack, I need to get the next field(s) and store the value in the last field
String typeOfPrevious = "";
@ -182,7 +166,7 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
currentType = typeContext.get(typeOfPrevious).get(instVar.fieldName);
String descriptor = getFieldDescriptor(currentType, typeContext, instVar.fieldName, thisClass);
String descriptor = getFieldDescriptor(currentType, typeContext, instVar.fieldName, typeOfPrevious);
mv.visitFieldInsn(Opcodes.PUTFIELD, typeOfPrevious, instVar.fieldName, descriptor);
continue;
} else {
@ -202,9 +186,6 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
//Now we have to implement the logic for the following fields in the chain as the above code
// only handles the first field in the chain
// For the following fields I only have to call GETFIELD so I load the next reference onto the stack
// The fields must be present in "typeOfPrevious"
currentType = typeContext.get(typeOfPrevious).get(instVar.receivers.get(i).identifier);
String descriptor = getFieldDescriptor(currentType, typeContext, instVar.receivers.get(i).identifier, typeOfPrevious);
mv.visitFieldInsn(Opcodes.GETFIELD, typeOfPrevious, instVar.receivers.get(i).identifier, descriptor);
@ -222,8 +203,7 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
}
} else {
//This is finished and right
// It's for when a field is accessed directly and without a "this."
// When a field is accessed directly and without a "this."
//Load the value of the right expression on the stack
right.codeGen(mv, localVars, typeContext, methodContext);
@ -240,59 +220,6 @@ public class AssignStatementExpression extends AbstractType implements IExpressi
}
}
/*
// Field is called with "this.xxx"
if (instVar.receivers.get(0).thisExpression) {
// If the chain is only 1 long we can directly store the value in the field
// If not we have to load the reference of the field on the stack
if(instVar.receivers.size() > 1) {
// If first receiver is not this check local then fields of thisClass
if (isLocal) {
currentType = localVars.get(instVar.receivers.get(i).identifier);
} else {
currentType = typeContext.get(thisClass).get(instVar.receivers.get(i).identifier);
}
currentType = typeContext.get(thisClass).get(instVar.fieldName);
String descriptor = getFieldDescriptor(currentType, typeContext, instVar.fieldName, thisClass);
mv.visitFieldInsn(Opcodes.GETFIELD, thisClass, instVar.fieldName, descriptor);
continue;
} else {
// Chain is only 1 long, so we can call PUTFIELD directly
//Load the value of the right expression on the stack
right.codeGen(mv, localVars, typeContext, methodContext);
currentType = typeContext.get(thisClass).get(instVar.fieldName);
String descriptor = getFieldDescriptor(currentType, typeContext, instVar.fieldName, thisClass);
mv.visitFieldInsn(Opcodes.PUTFIELD, thisClass, instVar.fieldName, descriptor);
continue;
}
}
// If first receiver is not this check local then fields of thisClass
if (isLocal) {
currentType = localVars.get(instVar.receivers.get(i).identifier);
} else {
currentType = typeContext.get(thisClass).get(instVar.receivers.get(i).identifier);
}
currentType = typeContext.get(typeOfPrevious).get(instVar.fieldName);
String descriptor = getFieldDescriptor(currentType, typeContext, instVar.fieldName, typeOfPrevious);
mv.visitFieldInsn(Opcodes.GETFIELD, thisClass, instVar.fieldName, descriptor);
continue;
}
currentType = typeContext.get(typeOfPrevious).get(instVar.receivers.get(i).identifier);
String descriptor = getFieldDescriptor(currentType, typeContext, instVar.receivers.get(i).identifier, typeOfPrevious);
mv.visitFieldInsn(Opcodes.GETFIELD, typeOfPrevious, instVar.receivers.get(i).identifier, descriptor);
typeOfPrevious = currentType;
} */
private String getFieldDescriptor(String type, HashMap<String, HashMap<String, String>> typeContext, String varName, String classToSearchFieldIn) {
StringBuilder descriptor = new StringBuilder();
switch (type) {

11
src/main/java/abstractSyntaxTree/StatementExpression/MethodCallStatementExpression.java
View File

@ -3,13 +3,10 @@ package abstractSyntaxTree.StatementExpression;
import TypeCheck.AbstractType;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Class.MethodDecl;
import abstractSyntaxTree.Class.RefType;
import abstractSyntaxTree.Expression.IExpression;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.Statement.IStatement;
import jdk.jshell.spi.ExecutionControl;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
@ -17,8 +14,8 @@ import java.util.*;
public class MethodCallStatementExpression extends AbstractType implements IExpression, IStatement {
String methodName;
List<IExpression> arguments; // Need typecheckresults
Receiver receiver; // InstVarExpression und NewStatementExpression Braucht typecheckResult
List<IExpression> arguments;
Receiver receiver;
List<ReceivingMethod> receivingMethods;
public String thisClass;
@ -44,7 +41,7 @@ public class MethodCallStatementExpression extends AbstractType implements IExpr
String currentType = "";
// receiver is instvar
// receiver is instVar
if (receiver != null) {
if (receiver.instVarExpression != null) {
receiver.instVarExpression.thisClass = this.thisClass;
@ -145,13 +142,11 @@ public class MethodCallStatementExpression extends AbstractType implements IExpr
owner = returnOfPreviousMethod;
}
String descriptor = getMethodDescriptor(methodName, localVars, methodContext, arguments, returnOfPreviousMethod, owner);
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, owner, methodName, descriptor, false);
}
// ()I
private String getMethodDescriptor(String methodName, LinkedHashMap<String, String> localVars, HashMap<String, HashMap<String, HashMap<String, ParameterList>>> methodContext, List<IExpression> arguments, String returnOfPreviousMethod, String owner) {
StringBuilder descriptor = new StringBuilder("(");

2
src/main/java/abstractSyntaxTree/StatementExpression/NewStatementExpression.java
View File

@ -6,10 +6,8 @@ import TypeCheck.TypeCheckHelper;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Expression.IExpression;
import abstractSyntaxTree.Expression.InstVarExpression;
import abstractSyntaxTree.Parameter.Parameter;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.Statement.IStatement;
import abstractSyntaxTree.Statement.WhileStatement;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

9
src/main/java/abstractSyntaxTree/StatementExpression/Receiver.java
View File

@ -1,16 +1,9 @@
package abstractSyntaxTree.StatementExpression;
import TypeCheck.TypeCheckException;
import TypeCheck.TypeCheckResult;
import abstractSyntaxTree.Expression.IExpression;
import abstractSyntaxTree.Expression.InstVarExpression;
import abstractSyntaxTree.Node;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.Statement.IStatement;
import org.objectweb.asm.MethodVisitor;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Objects;
public class Receiver implements Node {

1
src/main/java/abstractSyntaxTree/StatementExpression/ReceivingMethod.java
View File

@ -5,7 +5,6 @@ import abstractSyntaxTree.Expression.IExpression;
import abstractSyntaxTree.Expression.LocalVarIdentifier;
import abstractSyntaxTree.Node;
import abstractSyntaxTree.Parameter.ParameterList;
import abstractSyntaxTree.Statement.LocalVarDecl;
import java.util.HashMap;
import java.util.List;

10
src/main/java/abstractSyntaxTree/StatementExpression/SuperStatementExpression.java
View File

@ -1,10 +0,0 @@
package abstractSyntaxTree.StatementExpression;
import abstractSyntaxTree.Expression.IExpression;
import java.util.List;
public class SuperStatementExpression extends MethodCallStatementExpression{
public SuperStatementExpression(String methodName, List<IExpression> arguments, List<ReceivingMethod> receivingMethods, Receiver receiver) {
super(methodName, receiver, receivingMethods, arguments);
}
}