package com.j2js;

import org.apache.bcel.generic.Type;

/**
 * @author wolfgang
 */
public class Form {

    public static int CATEGORY1 = 1;
    public static int CATEGORY2 = 2;
    
    public static class Value {
        public String type;
        public String name;
        
        public Value(String theType, String theName) {
            type = theType;
            name = theName;
        }
        
        public int getCategory() {
            return type.equals("cat2") || type.equals("long") || type.equals("double")?CATEGORY2:CATEGORY1;
        }
    }
    
    private int index;
    private Form.Value[] ins;
    private Form.Value[] outs;
    private Form.Value[] operands;
    private Type type;
    
    /**
     * @return Returns the ins.
     */
    public Form.Value[] getIns() {
        return ins;
    }

    /**
     * @param theIns The ins to set.
     */
    public void setIns(Form.Value[] theIns) {
        ins = theIns;
    }

    /**
     * @return Returns the operands.
     */
    public Form.Value[] getOperands() {
        return operands;
    }

    /**
     * @param theOperands The operands to set.
     */
    public void setOperands(Form.Value[] theOperands) {
        operands = theOperands;
    }

    /**
     * @return Returns the outs.
     */
    public Form.Value[] getOuts() {
        return outs;
    }

    /**
     * @param theOuts The outs to set.
     */
    public void setOuts(Form.Value[] theOuts) {
        outs = theOuts;
        
        if (theOuts.length != 1) return;
        
        String s = theOuts[0].type;
        if (s.equals("object")) type = Type.OBJECT;
        else if (s.equals("int")) type = Type.INT;
        else if (s.equals("short")) type = Type.SHORT;
        else if (s.equals("byte")) type = Type.SHORT;
        else if (s.equals("long")) type = Type.LONG;
        else if (s.equals("float")) type = Type.FLOAT;
        else if (s.equals("double")) type = Type.DOUBLE;
        else if (!s.equals("cat1") && !s.equals("returnAddress") && !s.equals("")) 
            throw new RuntimeException("Unhandled type: " + s);
    }
    
    public int getOpStackDelta() {
        return getOuts().length - getIns().length;
    }

    public Type getResultType() {
        if (type == null) throw new RuntimeException("Result type is not available for " + this);
        
        return type;
    }
    /**
     * @return Returns the index.
     */
    public int getIndex() {
        return index;
    }
    /**
     * @param theIndex The index to set.
     */
    public void setIndex(int theIndex) {
        index = theIndex;
    }
}