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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 "FuzzCommon.h"
// allows some float values for path points
void FuzzPath(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;
}
}
}
// allows all float values for path points
void BuildPath(Fuzz* fuzz, SkPath* path, int last_verb) {
while (!fuzz->exhausted()) {
// Use a uint8_t to conserve bytes. This makes our "fuzzed bytes footprint"
// smaller, which leads to more efficient fuzzing.
uint8_t operation;
fuzz->next(&operation);
SkScalar a,b,c,d,e,f;
switch (operation % (last_verb + 1)) {
case SkPath::Verb::kMove_Verb:
fuzz->next(&a, &b);
path->moveTo(a, b);
break;
case SkPath::Verb::kLine_Verb:
fuzz->next(&a, &b);
path->lineTo(a, b);
break;
case SkPath::Verb::kQuad_Verb:
fuzz->next(&a, &b, &c, &d);
path->quadTo(a, b, c, d);
break;
case SkPath::Verb::kConic_Verb:
fuzz->next(&a, &b, &c, &d, &e);
path->conicTo(a, b, c, d, e);
break;
case SkPath::Verb::kCubic_Verb:
fuzz->next(&a, &b, &c, &d, &e, &f);
path->cubicTo(a, b, c, d, e, f);
break;
case SkPath::Verb::kClose_Verb:
path->close();
break;
case SkPath::Verb::kDone_Verb:
// In this case, simply exit.
return;
}
}
}
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