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package org.jruby.runtime.profile.builtin;

import java.util.ArrayList;

class MethodData extends InvocationSet {
    
    final int serialNumber;

    MethodData(int serial) {
        super(new ArrayList<Invocation>());
        this.serialNumber = serial;
    }

    private static class IntList {

        private int[] ints = new int[10];
        private int size;

        public void add(int i) {
            if (size == ints.length) {
                int[] newInts = new int[(int) (ints.length * 1.5 + 1)];
                System.arraycopy(ints, 0, newInts, 0, ints.length);
                ints = newInts;
            }
            ints[size++] = i;
        }

        public boolean contains(int i) {
            for (int j = 0; j < size; j++) {
                if (ints[j] == i) {
                    return true;
                }
            }
            return false;
        }

        public int[] toIntArray() {
            int[] newInts = new int[size];
            System.arraycopy(ints, 0, newInts, 0, size);
            return newInts;
        }
    }

    public int[] parents() {
        IntList p = new IntList();
        for (Invocation inv : invocations) {
            if (inv.getParent() != null) {
                int serial = inv.getParent().getMethodSerialNumber();
                if (!p.contains(serial)) {
                    p.add(serial);
                }
            }
        }
        return p.toIntArray();
    }

    public int[] children() {
        IntList p = new IntList();
        for (Invocation inv : invocations) {
            for (Integer childSerial : inv.getChildren().keySet()) {
                if (!p.contains(childSerial)) {
                    p.add(childSerial);
                }
            }
        }
        return p.toIntArray();
    }

    public InvocationSet invocationsForParent(int parentSerial) {
        ArrayList<Invocation> p = new ArrayList<Invocation>();
        for (Invocation inv : invocations) {
            int serial = inv.getParent().getMethodSerialNumber();
            if (serial == parentSerial) {
                p.add(inv.getParent());
            }
        }
        return new InvocationSet(p);
    }

    public InvocationSet rootInvocationsFromParent(int parentSerial) {
        ArrayList<Invocation> p = new ArrayList<Invocation>();
        for (Invocation inv : invocations) {
            int serial = inv.getParent().getMethodSerialNumber();
            if (serial == parentSerial && inv.getRecursiveDepth() == 1) {
                p.add(inv);
            }
        }
        return new InvocationSet(p);
    }

    public InvocationSet invocationsFromParent(int parentSerial) {
        ArrayList<Invocation> p = new ArrayList<Invocation>();
        for (Invocation inv : invocations) {
            int serial = inv.getParent().getMethodSerialNumber();
            if (serial == parentSerial) {
                p.add(inv);
            }
        }
        return new InvocationSet(p);
    }

    public InvocationSet rootInvocationsOfChild(int childSerial) {
        ArrayList<Invocation> p = new ArrayList<Invocation>();
        for (Invocation inv : invocations) {
            Invocation childInv = inv.getChildren().get(childSerial);
            if (childInv != null && childInv.getRecursiveDepth() == 1) {
                p.add(childInv);
            }
        }
        return new InvocationSet(p);
    }

    public InvocationSet invocationsOfChild(int childSerial) {
        ArrayList<Invocation> p = new ArrayList<Invocation>();
        for (Invocation inv : invocations) {
            Invocation childInv = inv.getChildren().get(childSerial);
            if (childInv != null) {
                p.add(childInv);
            }
        }
        return new InvocationSet(p);
    }

    @Override
    public long totalTime() {
        long t = 0;
        for (Invocation inv : invocations) {
            if (inv.getRecursiveDepth() == 1) {
                t += inv.getDuration();
            }
        }
        return t;
    }

    @Override
    public long childTime() {
        long t = 0;
        for (Invocation inv : invocations) {
            if (inv.getRecursiveDepth() == 1) {
                t += inv.childTime();
            }
        }
        return t;
    }
    
}
