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ConstructorNode and NotNode
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i22007 2024-06-23 16:06:07 -04:00
parent ef0bc99bbf
commit d631b01c82
1 changed files with 33 additions and 3 deletions
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36
src/main/java/bytecode/MethodCodeGen.java
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@ -19,9 +19,11 @@ import ast.statementexpressions.methodcallstatementnexpressions.TargetNode;
import ast.statements.*;
import ast.type.ValueNode;
import ast.type.type.BaseType;
import ast.type.type.TypeEnum;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import java.util.ArrayList;
import java.util.List;
@ -51,14 +53,27 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
methodVisitor =
classWriter.visitMethod(mapper.mapAccessTypeToOpcode(constructorNode.accessType),
"<init>",
"()V",
mapper.generateMethodDescriptor(new BaseType(TypeEnum.VOID), constructorNode.parameters),
null,
null);
methodVisitor.visitCode();
localVaribales.add("this");
// Add all method parameters to localVariables
for (ParameterNode parameterNode : constructorNode.parameters) {
localVaribales.add(parameterNode.identifier);
}
methodVisitor.visitVarInsn(ALOAD, 0);
methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
// Visit all statements
for (IStatementNode statementNode : constructorNode.block.statements) {
statementNode.accept(this);
}
methodVisitor.visitInsn(RETURN);
methodVisitor.visitMaxs(1, 1);
methodVisitor.visitMaxs(1, localVaribales.size());
methodVisitor.visitEnd();
}
@ -168,7 +183,7 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
switch (nonCalculationNode.operator) {
case AND:
nonCalculationNode.unaryExpression.accept(this);
methodVisitor.visitJumpInsn(IFEQ, labelFalse);
methodVisitor.visitJumpInsn(IFEQ, labelFalse); // Value compared to 0 (false)
nonCalculationNode.expression.accept(this);
methodVisitor.visitJumpInsn(IFEQ, labelFalse);
break;
@ -240,7 +255,22 @@ public class MethodCodeGen implements bytecode.visitor.MethodVisitor {
@Override
public void visit(NotNode notNode) {
Label labelFalse = new Label();
Label labelTrue = new Label();
notNode.expression.accept(this);
methodVisitor.visitJumpInsn(Opcodes.IFNE, labelFalse); // false if value is true (value != 0)
Label labelEndLogicalExpression = new Label();
methodVisitor.visitLabel(labelTrue);
methodVisitor.visitInsn(ICONST_1); // true
methodVisitor.visitJumpInsn(GOTO, labelEndLogicalExpression);
methodVisitor.visitLabel(labelFalse);
methodVisitor.visitInsn(ICONST_0); // false
methodVisitor.visitLabel(labelEndLogicalExpression);
}
@Override