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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Fuzz.h"
#include "SkPath.h"
#include "SkRegion.h"
// We don't always want to test NaNs and infinities.
static void fuzz_nice_float(Fuzz* fuzz, float* f) {
float v;
fuzz->next(&v);
constexpr float kLimit = 1.0e35f; // FLT_MAX?
*f = (v == v && v <= kLimit && v >= -kLimit) ? v : 0.0f;
}
template <typename... Args>
inline void fuzz_nice_float(Fuzz* fuzz, float* f, Args... rest) {
fuzz_nice_float(fuzz, f);
fuzz_nice_float(fuzz, rest...);
}
static void fuzz_path(Fuzz* fuzz, SkPath* path, int maxOps) {
if (maxOps < 2) {
maxOps = 2;
}
uint8_t fillType;
fuzz->nextRange(&fillType, 0, (uint8_t)SkPath::kInverseEvenOdd_FillType);
path->setFillType((SkPath::FillType)fillType);
uint8_t numOps;
fuzz->nextRange(&numOps, 2, maxOps);
for (uint8_t i = 0; i < numOps; ++i) {
uint8_t op;
fuzz->nextRange(&op, 0, 6);
SkScalar a, b, c, d, e, f;
switch (op) {
case 0:
fuzz_nice_float(fuzz, &a, &b);
path->moveTo(a, b);
break;
case 1:
fuzz_nice_float(fuzz, &a, &b);
path->lineTo(a, b);
break;
case 2:
fuzz_nice_float(fuzz, &a, &b, &c, &d);
path->quadTo(a, b, c, d);
break;
case 3:
fuzz_nice_float(fuzz, &a, &b, &c, &d, &e);
path->conicTo(a, b, c, d, e);
break;
case 4:
fuzz_nice_float(fuzz, &a, &b, &c, &d, &e, &f);
path->cubicTo(a, b, c, d, e, f);
break;
case 5:
fuzz_nice_float(fuzz, &a, &b, &c, &d, &e);
path->arcTo(a, b, c, d, e);
break;
case 6:
path->close();
break;
default:
SkASSERT(false);
break;
}
}
}
template <>
inline void Fuzz::next(SkRegion* region) {
uint8_t N;
this->nextRange(&N, 0, 10);
for (uint8_t i = 0; i < N; ++i) {
SkIRect r;
uint8_t op;
this->next(&r);
r.sort();
this->nextRange(&op, 0, (uint8_t)SkRegion::kLastOp);
if (!region->op(r, (SkRegion::Op)op)) {
return;
}
}
}
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