JavaPatternMatching/src/de/dhbwstuttgart/syntaxtree/operator/LogOp.java

// ino.module.LogOp.8602.package 
package de.dhbwstuttgart.syntaxtree.operator;
// ino.end
// ino.module.LogOp.8602.import 
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Vector;

import de.dhbwstuttgart.bytecode.ClassFile;
import de.dhbwstuttgart.bytecode.CodeAttribute;
import de.dhbwstuttgart.bytecode.JVMCode;
import de.dhbwstuttgart.myexception.CTypeReconstructionException;
import de.dhbwstuttgart.myexception.JVMCodeException;
import de.dhbwstuttgart.syntaxtree.statement.Binary;
import de.dhbwstuttgart.syntaxtree.statement.Expr;
import de.dhbwstuttgart.syntaxtree.statement.NotExpr;
import de.dhbwstuttgart.syntaxtree.statement.Null;
import de.dhbwstuttgart.syntaxtree.statement.Statement;
import de.dhbwstuttgart.syntaxtree.type.BooleanType;
import de.dhbwstuttgart.syntaxtree.type.Pair;
import de.dhbwstuttgart.syntaxtree.type.RefType;
import de.dhbwstuttgart.syntaxtree.type.Type;
import de.dhbwstuttgart.typeinference.ConstraintsSet;
import de.dhbwstuttgart.typeinference.SingleConstraint;
import de.dhbwstuttgart.typeinference.assumptions.TypeAssumptions;
import de.dhbwstuttgart.typeinference.exceptions.DebugException;
import de.dhbwstuttgart.typeinference.unify.Unify;




// ino.class.LogOp.24186.declaration 
public abstract class LogOp extends Operator
// ino.end
// ino.class.LogOp.24186.body
{
    
    // ino.method.LogOp.24190.definition 
    public LogOp(int offset, int variableLength)
    // ino.end
    // ino.method.LogOp.24190.body 
    {
        super(offset, variableLength);
    }
    // ino.end

    // ino.method.codegen.24193.definition 
    public void codegen(ClassFile classfile, CodeAttribute code, Expr expr, boolean not, Vector paralist)
    throws JVMCodeException
    // ino.end
    // ino.method.codegen.24193.body 
    {
    Vector<Integer> indices = new Vector<Integer>();
    Operator op = ((Binary)expr).get_Operator();
    Expr expr1 = ((Binary)expr).get_Expr1();
    Expr expr2 = ((Binary)expr).get_Expr2();
    boolean and;
    
    if(op instanceof OrOp) and = false;
    else if(op instanceof AndOp) and = true;
    else throw new JVMCodeException("JVMCodeException: LogOp: void codegen(ClassFile classfile, Code_attribute code, Expr expr, boolean not)");
    
    build(classfile, code, expr1, indices, not, false, and, paralist);
    build(classfile, code, expr2, indices, not, true, and, paralist);
    
    code.add_code(JVMCode.iconst_1);
    code.add_code(JVMCode.goto_);
    code.add_code_short(4);
    code.add_code(JVMCode.iconst_0);
    int code_length = code.get_code_length();
    replace_index(code, indices, code_length - 1, code_length - 5);
    }
    // ino.end

    // ino.method.if_codegen.24196.definition 
    public void if_codegen(ClassFile classfile, CodeAttribute code, boolean not, Expr expr, Statement then_block, Statement else_block, Vector paralist)
    throws JVMCodeException
    // ino.end
    // ino.method.if_codegen.24196.body 
    {
    Vector<Integer> indices = new Vector<Integer>();
    Operator op = ((Binary)expr).get_Operator();
    Expr expr1 = ((Binary)expr).get_Expr1();
    Expr expr2 = ((Binary)expr).get_Expr2();
    boolean and;
    
    if(op instanceof OrOp) and = false;
    else if(op instanceof AndOp) and = true;
    else throw new JVMCodeException("JVMCodeException: LogOp: if_codegen(ClassFile classfile, Code_attribute code, boolean not, Expr expr, Statement then_block, Statement else_block)");
    
    build(classfile, code, expr1, indices, not, false, and, paralist);
    build(classfile, code, expr2, indices, not, true, and, paralist);
    
    int breakpoint1 = code.get_code_length();
    if(then_block != null) then_block.codegen(classfile, code, paralist);
    
    int breakpoint2 = code.get_code_length();
    if(else_block != null) {
        code.add_code(JVMCode.goto_);
        breakpoint2 = code.get_code_length();
        code.add_code_short(0);
        else_block.codegen(classfile, code, paralist);
        code.set_code_short(code.get_code_length() + 1 - breakpoint2, breakpoint2);
    }
    replace_index(code, indices, breakpoint2 + 2 , breakpoint1);
    }
    // ino.end

    // ino.method.loop_codegen.24199.definition 
    public void loop_codegen(ClassFile classfile, CodeAttribute code, Expr expr, int breakpoint, boolean not, Vector paralist)
    throws JVMCodeException
    // ino.end
    // ino.method.loop_codegen.24199.body 
    {
    Vector<Integer> indices = new Vector<Integer>();
    Operator op = ((Binary)expr).get_Operator();
    Expr expr1 = ((Binary)expr).get_Expr1();
    Expr expr2 = ((Binary)expr).get_Expr2();
    boolean and;
    
    if(op instanceof OrOp) and = false;
    else if(op instanceof AndOp) and = true;
    else throw new JVMCodeException("JVMCodeException: LogOp: void loop_codegen(ClassFile classfile, Code_attribute code, Expr expr, int breakpoint, boolean not)");
    
    build(classfile, code, expr1, indices, not, false, and, paralist);
    build(classfile, code, expr2, indices, not, true, and, paralist);
    
    replace_index(code, indices, breakpoint + 2, code.get_code_length());
    }
    // ino.end

    // ino.method.build.24202.definition 
    public static void build(ClassFile classfile, CodeAttribute code, Expr expr, Vector<Integer> indices, boolean not, boolean ex2, boolean and, Vector paralist)
    throws JVMCodeException
    // ino.end
    // ino.method.build.24202.body 
    {
    if(expr instanceof NotExpr) 
        build(classfile, code, ((NotExpr)expr).get_Expr(), indices, !not, ex2, and, paralist); 
    else if(expr instanceof Binary) {
        Operator op = ((Binary)expr).get_Operator();
        Expr expr1 = ((Binary)expr).get_Expr1();
        Expr expr2 = ((Binary)expr).get_Expr2();
    
        if(op instanceof LogOp) {
        boolean and2;
        if(op instanceof OrOp) and2 = false;
        else if(op instanceof AndOp) and2 = true;
        else throw new JVMCodeException("JVMCodeException: LogOp: void build(ClassFile classfile, Code_attribute code, Expr expr, Vector indices, boolean not, boolean ex2, boolean and)");
    
        if((and != and2) && !ex2) {
            Vector<Integer> indices2 = new Vector<Integer>();
            build(classfile, code, expr1, indices2, not, false, and2, paralist);
            build(classfile, code, expr2, indices, not, ex2, and, paralist);
            int breakpoint = code.get_code_length();
            replace_index(code, indices2, breakpoint, breakpoint);
        }
        else {
            build(classfile, code, expr1, indices, not, false, and2, paralist);
            build(classfile, code, expr2, indices, not, ex2, and, paralist);
        }
        }
        else if(op instanceof RelOp) {
        expr1.codegen(classfile, code, paralist);
        expr2.codegen(classfile, code, paralist);
    
        if(expr1 instanceof Null || expr2 instanceof Null) ((RelOp)op).if_codegen(classfile, code, "null", not);
        else ((RelOp)op).if_codegen(classfile, code, expr.getTypeName(), not);
    
        indices.addElement(new Integer(code.get_code_length()));
    
        if(and) {
            if(not && !ex2) code.add_code_short(1);
            else code.add_code_short(0);
        }
        else {
            if(not || ex2) code.add_code_short(0);
            else code.add_code_short(1);
        }
        }
        else throw new JVMCodeException("JVMCodeException: LogOp: void build(ClassFile classfile, Code_attribute code, Expr expr, Vector indices, boolean not, boolean ex2, boolean and)");
    }
    else {
        expr.codegen(classfile, code, paralist);
        indices.addElement(new Integer(code.get_code_length() + 1));
        if(and) {
        if(not && ex2) code.add_code(JVMCode.ifne);
        else code.add_code(JVMCode.ifeq);
        if(not && !ex2) code.add_code_short(1);
        else code.add_code_short(0);
        }
        else {
        if(!not && ex2) code.add_code(JVMCode.ifeq);
        else code.add_code(JVMCode.ifne);
        if(not || ex2) code.add_code_short(0);
        else code.add_code_short(1);
        }
    }
    }
    // ino.end

    // ino.method.replace_index.24205.definition 
    public static void replace_index(CodeAttribute code, Vector<Integer> indices, int else_index, int then_index)
    throws JVMCodeException
    // ino.end
    // ino.method.replace_index.24205.body 
    {
    Vector b = code.get_code_Vector();
    for(int i = 0; i < indices.size(); i++) {
        int y = indices.elementAt(i).intValue();
        int high = JVMCode.bytes_to_int((Byte)b.elementAt(y));
        int low = JVMCode.bytes_to_int((Byte)b.elementAt(y+1));
        int x = (high << 8) + low;
        if(x == 0) code.set_code_short(else_index + 1 - y, y);
        else if(x == 1) code.set_code_short(then_index + 1 - y, y);
        else throw new JVMCodeException("JVMCodeException: LogOp: replace_index(Code_attribute code, Vector indices, int else_index, int then_index)");   
    }
    }
    // ino.end
      
    @Override
    protected Hashtable<RefType, RefType> getOperatorTypes() {
    	Hashtable<RefType, RefType> types = new Hashtable<RefType, RefType>();
    	
   		types.put(new RefType("java.lang.Boolean",-1), new RefType("java.lang.Boolean",-1));
   		
    	return types;
    }

    @Override
	public HashMap<Type,Type> getReturnTypes(TypeAssumptions ass) {
		HashMap<Type,Type> ret = new HashMap<Type,Type>();
		ret.put(ass.getTypeFor(new RefType("java.lang.Boolean",-1), this), ass.getTypeFor(new RefType("java.lang.Boolean",-1), this));
   		
		return ret;
	}

}
// ino.end