98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
|
/*
|
||
|
|
* 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 "SkRandom.h"
|
||
|
|
#include "random_parse_path.h"
|
||
|
|
|
||
|
|
const struct Legal {
|
||
|
|
char fSymbol;
|
||
|
|
int fScalars;
|
||
|
|
} gLegal[] = {
|
||
|
|
{ 'M', 2 },
|
||
|
|
{ 'H', 1 },
|
||
|
|
{ 'V', 1 },
|
||
|
|
{ 'L', 2 },
|
||
|
|
{ 'Q', 4 },
|
||
|
|
{ 'T', 2 },
|
||
|
|
{ 'C', 6 },
|
||
|
|
{ 'S', 4 },
|
||
|
|
{ 'A', 4 },
|
||
|
|
{ 'Z', 0 },
|
||
|
|
};
|
||
|
|
|
||
|
|
bool gEasy = false; // set to true while debugging to suppress unusual whitespace
|
||
|
|
|
||
|
|
// mostly do nothing, then bias towards spaces
|
||
|
|
const char gWhiteSpace[] = { 0, 0, 0, 0, 0, 0, 0, 0, ' ', ' ', ' ', ' ', 0x09, 0x0D, 0x0A };
|
||
|
|
|
||
|
|
static void add_white(SkRandom* rand, SkString* atom) {
|
||
|
|
if (gEasy) {
|
||
|
|
atom->append(" ");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
int reps = rand->nextRangeU(0, 2);
|
||
|
|
for (int rep = 0; rep < reps; ++rep) {
|
||
|
|
int index = rand->nextRangeU(0, (int) SK_ARRAY_COUNT(gWhiteSpace) - 1);
|
||
|
|
if (gWhiteSpace[index]) {
|
||
|
|
atom->append(&gWhiteSpace[index], 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void add_comma(SkRandom* rand, SkString* atom) {
|
||
|
|
if (gEasy) {
|
||
|
|
atom->append(",");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
size_t count = atom->size();
|
||
|
|
add_white(rand, atom);
|
||
|
|
if (rand->nextBool()) {
|
||
|
|
atom->append(",");
|
||
|
|
}
|
||
|
|
do {
|
||
|
|
add_white(rand, atom);
|
||
|
|
} while (count == atom->size());
|
||
|
|
}
|
||
|
|
|
||
|
|
static void add_some_white(SkRandom* rand, SkString* atom) {
|
||
|
|
size_t count = atom->size();
|
||
|
|
do {
|
||
|
|
add_white(rand, atom);
|
||
|
|
} while (count == atom->size());
|
||
|
|
}
|
||
|
|
|
||
|
|
SkString MakeRandomParsePathPiece(SkRandom* rand) {
|
||
|
|
SkString atom;
|
||
|
|
int index = rand->nextRangeU(0, (int) SK_ARRAY_COUNT(gLegal) - 1);
|
||
|
|
const Legal& legal = gLegal[index];
|
||
|
|
gEasy ? atom.append("\n") : add_white(rand, &atom);
|
||
|
|
char symbol = legal.fSymbol | (rand->nextBool() ? 0x20 : 0);
|
||
|
|
atom.append(&symbol, 1);
|
||
|
|
int reps = rand->nextRangeU(1, 3);
|
||
|
|
for (int rep = 0; rep < reps; ++rep) {
|
||
|
|
for (int index = 0; index < legal.fScalars; ++index) {
|
||
|
|
SkScalar coord = rand->nextRangeF(0, 100);
|
||
|
|
add_white(rand, &atom);
|
||
|
|
atom.appendScalar(coord);
|
||
|
|
if (rep < reps - 1 && index < legal.fScalars - 1) {
|
||
|
|
add_comma(rand, &atom);
|
||
|
|
} else {
|
||
|
|
add_some_white(rand, &atom);
|
||
|
|
}
|
||
|
|
if ('A' == legal.fSymbol && 1 == index) {
|
||
|
|
atom.appendScalar(rand->nextRangeF(-720, 720));
|
||
|
|
add_comma(rand, &atom);
|
||
|
|
atom.appendU32(rand->nextRangeU(0, 1));
|
||
|
|
add_comma(rand, &atom);
|
||
|
|
atom.appendU32(rand->nextRangeU(0, 1));
|
||
|
|
add_comma(rand, &atom);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return atom;
|
||
|
|
}
|