/*

 * Copyright 2016 Google Inc.

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#include "fuzz/Fuzz.h"

#include "fuzz/FuzzCommon.h"

// UBSAN reminds us that bool can only legally hold 0 or 1.

void Fuzz::next(bool* b) {

    uint8_t n;

    this->next(&n);

    *b = (n & 1) == 1;

}

void Fuzz::nextBytes(void* n, size_t size) {

    if ((fNextByte + size) > fSize) {

        sk_bzero(n, size);

        memcpy(n, fData + fNextByte, fSize - fNextByte);

        fNextByte = fSize;

        return;

    }

    memcpy(n, fData + fNextByte, size);

    fNextByte += size;

}

void Fuzz::next(SkRegion* region) {

    // See FuzzCommon.h

    FuzzNiceRegion(this, region, 10);

}

void Fuzz::nextRange(float* f, float min, float max) {

    this->next(f);

    if (!std::isnormal(*f) && *f != 0.0f) {

        // Don't deal with infinity or other strange floats.

        *f = max;

    }

    *f = min + std::fmod(std::abs(*f), (max - min + 1));

}