// 
// Decompiled by Procyon v0.6.0
// 

package org.bson;

class BSON
{
    static final byte B_GENERAL = 0;
    static final byte B_BINARY = 2;
    private static final int FLAG_GLOBAL = 256;
    private static final int[] FLAG_LOOKUP;
    
    static int regexFlags(final String s) {
        int flags = 0;
        if (s == null) {
            return flags;
        }
        for (final char f : s.toLowerCase().toCharArray()) {
            flags |= regexFlag(f);
        }
        return flags;
    }
    
    private static int regexFlag(final char c) {
        final int flag = BSON.FLAG_LOOKUP[c];
        if (flag == 0) {
            throw new IllegalArgumentException(String.format("Unrecognized flag [%c]", c));
        }
        return flag;
    }
    
    static String regexFlags(final int flags) {
        int processedFlags = flags;
        final StringBuilder buf = new StringBuilder();
        for (int i = 0; i < BSON.FLAG_LOOKUP.length; ++i) {
            if ((processedFlags & BSON.FLAG_LOOKUP[i]) > 0) {
                buf.append((char)i);
                processedFlags -= BSON.FLAG_LOOKUP[i];
            }
        }
        if (processedFlags > 0) {
            throw new IllegalArgumentException("Some flags could not be recognized.");
        }
        return buf.toString();
    }
    
    static {
        (FLAG_LOOKUP = new int[65535])[103] = 256;
        BSON.FLAG_LOOKUP[105] = 2;
        BSON.FLAG_LOOKUP[109] = 8;
        BSON.FLAG_LOOKUP[115] = 32;
        BSON.FLAG_LOOKUP[99] = 128;
        BSON.FLAG_LOOKUP[120] = 4;
        BSON.FLAG_LOOKUP[100] = 1;
        BSON.FLAG_LOOKUP[116] = 16;
        BSON.FLAG_LOOKUP[117] = 64;
    }
}