epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2011 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | #include "SkScript2.h" |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 9 | #include "SkData.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 10 | #include "SkFloatingPoint.h" |
| 11 | #include "SkMath.h" |
| 12 | #include "SkParse.h" |
| 13 | #include "SkScriptCallBack.h" |
| 14 | #include "SkScriptRuntime.h" |
| 15 | #include "SkString.h" |
| 16 | #include "SkOpArray.h" |
| 17 | |
| 18 | const SkScriptEngine2::OperatorAttributes SkScriptEngine2::gOpAttributes[] = { |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 19 | { SkOperand2::kNoType, SkOperand2::kNoType, kNoBias, kResultIsNotBoolean }, |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 20 | { SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar | SkOperand2::kString), |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 21 | SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar | SkOperand2::kString), kTowardsString, kResultIsNotBoolean }, // kAdd |
| 22 | { SkOperand2::kS32, SkOperand2::kS32, kNoBias, kResultIsNotBoolean }, // kBitAnd |
| 23 | { SkOperand2::kNoType, SkOperand2::kS32, kNoBias, kResultIsNotBoolean }, // kBitNot |
| 24 | { SkOperand2::kS32, SkOperand2::kS32, kNoBias, kResultIsNotBoolean }, // kBitOr |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 25 | { SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar), |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 26 | SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar), kNoBias, kResultIsNotBoolean }, // kDivide |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 27 | { SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar | SkOperand2::kString), |
| 28 | SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar |SkOperand2:: kString), kTowardsNumber, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 29 | kResultIsBoolean }, // kEqual |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 30 | { SkOperand2::kS32, SkOperand2::kNoType, kNoBias, kResultIsNotBoolean }, // kFlipOps |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 31 | { SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar | SkOperand2::kString), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 32 | SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar | SkOperand2::kString), kTowardsNumber, |
| 33 | kResultIsBoolean }, // kGreaterEqual |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 34 | { SkOperand2::kNoType, SkOperand2::kS32, kNoBias, kResultIsNotBoolean }, // kLogicalAnd (really, ToBool) |
| 35 | { SkOperand2::kNoType, SkOperand2::kS32, kNoBias, kResultIsNotBoolean }, // kLogicalNot |
| 36 | { SkOperand2::kS32, SkOperand2::kS32, kNoBias, kResultIsNotBoolean }, // kLogicalOr |
| 37 | { SkOperand2::kNoType, SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar), kNoBias, kResultIsNotBoolean }, // kMinus |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 38 | { SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar), |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 39 | SkOperand2::OpType(SkOperand2::kS32 |SkOperand2:: kScalar), kNoBias, kResultIsNotBoolean }, // kModulo |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 40 | { SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar), |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 41 | SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar), kNoBias, kResultIsNotBoolean }, // kMultiply |
| 42 | { SkOperand2::kS32, SkOperand2::kS32, kNoBias, kResultIsNotBoolean }, // kShiftLeft |
| 43 | { SkOperand2::kS32, SkOperand2::kS32, kNoBias, kResultIsNotBoolean }, // kShiftRight |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 44 | { SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar), |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 45 | SkOperand2::OpType(SkOperand2::kS32 | SkOperand2::kScalar), kNoBias, kResultIsNotBoolean }, // kSubtract |
| 46 | { SkOperand2::kS32, SkOperand2::kS32, kNoBias, kResultIsNotBoolean } // kXor |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 47 | }; |
| 48 | |
| 49 | #define kBracketPrecedence 16 |
| 50 | #define kIfElsePrecedence 15 |
| 51 | |
| 52 | const signed char SkScriptEngine2::gPrecedence[] = { |
| 53 | 17, // kUnassigned, |
| 54 | 6, // kAdd, |
| 55 | 10, // kBitAnd, |
| 56 | 4, // kBitNot, |
| 57 | 12, // kBitOr, |
| 58 | 5, // kDivide, |
| 59 | 9, // kEqual, |
| 60 | -1, // kFlipOps, |
| 61 | 8, // kGreaterEqual, |
| 62 | 13, // kLogicalAnd, |
| 63 | 4, // kLogicalNot, |
| 64 | 14, // kLogicalOr, |
| 65 | 4, // kMinus, |
| 66 | 5, // kModulo, |
| 67 | 5, // kMultiply, |
| 68 | 7, // kShiftLeft, |
| 69 | 7, // kShiftRight, // signed |
| 70 | 6, // kSubtract, |
| 71 | 11, // kXor |
| 72 | kBracketPrecedence, // kArrayOp |
| 73 | kIfElsePrecedence, // kElse |
| 74 | kIfElsePrecedence, // kIf |
| 75 | kBracketPrecedence, // kParen |
| 76 | }; |
| 77 | |
| 78 | const SkScriptEngine2::TypeOp SkScriptEngine2::gTokens[] = { |
| 79 | kNop, // unassigned |
| 80 | kAddInt, // kAdd, |
| 81 | kBitAndInt, // kBitAnd, |
| 82 | kBitNotInt, // kBitNot, |
| 83 | kBitOrInt, // kBitOr, |
| 84 | kDivideInt, // kDivide, |
| 85 | kEqualInt, // kEqual, |
| 86 | kFlipOpsOp, // kFlipOps, |
| 87 | kGreaterEqualInt, // kGreaterEqual, |
| 88 | kLogicalAndInt, // kLogicalAnd, |
| 89 | kLogicalNotInt, // kLogicalNot, |
| 90 | kLogicalOrInt, // kLogicalOr, |
| 91 | kMinusInt, // kMinus, |
| 92 | kModuloInt, // kModulo, |
| 93 | kMultiplyInt, // kMultiply, |
| 94 | kShiftLeftInt, // kShiftLeft, |
| 95 | kShiftRightInt, // kShiftRight, // signed |
| 96 | kSubtractInt, // kSubtract, |
| 97 | kXorInt // kXor |
| 98 | }; |
| 99 | |
| 100 | static inline bool is_between(int c, int min, int max) |
| 101 | { |
| 102 | return (unsigned)(c - min) <= (unsigned)(max - min); |
| 103 | } |
| 104 | |
| 105 | static inline bool is_ws(int c) |
| 106 | { |
| 107 | return is_between(c, 1, 32); |
| 108 | } |
| 109 | |
| 110 | static int token_length(const char* start) { |
| 111 | char ch = start[0]; |
| 112 | if (! is_between(ch, 'a' , 'z') && ! is_between(ch, 'A', 'Z') && ch != '_' && ch != '$') |
| 113 | return -1; |
| 114 | int length = 0; |
| 115 | do |
| 116 | ch = start[++length]; |
| 117 | while (is_between(ch, 'a' , 'z') || is_between(ch, 'A', 'Z') || is_between(ch, '0', '9') || |
| 118 | ch == '_' || ch == '$'); |
| 119 | return length; |
| 120 | } |
| 121 | |
| 122 | SkScriptEngine2::SkScriptEngine2(SkOperand2::OpType returnType) : fActiveStream(&fStream), |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 123 | fTokenLength(0), fReturnType(returnType), fError(kNoError), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 124 | fAccumulatorType(SkOperand2::kNoType), |
| 125 | fBranchPopAllowed(true), fConstExpression(true), fOperandInUse(false) |
| 126 | { |
| 127 | Branch branch(kUnassigned, 0, 0); |
| 128 | fBranchStack.push(branch); |
| 129 | *fOpStack.push() = (Op) kParen; |
| 130 | } |
| 131 | |
| 132 | SkScriptEngine2::~SkScriptEngine2() { |
| 133 | for (SkString** stringPtr = fTrackString.begin(); stringPtr < fTrackString.end(); stringPtr++) |
| 134 | delete *stringPtr; |
| 135 | for (SkOpArray** arrayPtr = fTrackArray.begin(); arrayPtr < fTrackArray.end(); arrayPtr++) |
| 136 | delete *arrayPtr; |
| 137 | } |
| 138 | |
| 139 | void SkScriptEngine2::addToken(SkScriptEngine2::TypeOp op) { |
| 140 | int limit = fBranchStack.count() - 1; |
| 141 | for (int index = 0; index < limit; index++) { |
| 142 | Branch& branch = fBranchStack.index(index); |
| 143 | if (branch.fPrimed == Branch::kIsPrimed) |
| 144 | resolveBranch(branch); |
| 145 | } |
| 146 | if (fBranchPopAllowed) { |
| 147 | while (fBranchStack.top().fDone == Branch::kIsDone) |
| 148 | fBranchStack.pop(); |
| 149 | } |
| 150 | unsigned char charOp = (unsigned char) op; |
| 151 | fActiveStream->write(&charOp, sizeof(charOp)); |
| 152 | } |
| 153 | |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 154 | void SkScriptEngine2::addTokenConst(SkScriptValue2* value, AddTokenRegister reg, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 155 | SkOperand2::OpType toType, SkScriptEngine2::TypeOp op) { |
| 156 | if (value->fIsConstant == SkScriptValue2::kConstant && convertTo(toType, value)) |
| 157 | return; |
| 158 | addTokenValue(*value, reg); |
| 159 | addToken(op); |
| 160 | value->fIsWritten = SkScriptValue2::kWritten; |
| 161 | value->fType = toType; |
| 162 | } |
| 163 | |
| 164 | void SkScriptEngine2::addTokenInt(int integer) { |
| 165 | fActiveStream->write(&integer, sizeof(integer)); |
| 166 | } |
| 167 | |
| 168 | void SkScriptEngine2::addTokenScalar(SkScalar scalar) { |
| 169 | fActiveStream->write(&scalar, sizeof(scalar)); |
| 170 | } |
| 171 | |
| 172 | void SkScriptEngine2::addTokenString(const SkString& string) { |
| 173 | int size = string.size(); |
| 174 | addTokenInt(size); |
| 175 | fActiveStream->write(string.c_str(), size); |
| 176 | } |
| 177 | |
| 178 | void SkScriptEngine2::addTokenValue(const SkScriptValue2& value, AddTokenRegister reg) { |
| 179 | if (value.isConstant() == false) { |
| 180 | if (reg == kAccumulator) { |
| 181 | if (fAccumulatorType == SkOperand2::kNoType) |
| 182 | addToken(kAccumulatorPop); |
| 183 | } else { |
| 184 | ; // !!! incomplete? |
| 185 | } |
| 186 | return; |
| 187 | } |
| 188 | if (reg == kAccumulator && fAccumulatorType != SkOperand2::kNoType) |
| 189 | addToken(kAccumulatorPush); |
| 190 | switch (value.fType) { |
| 191 | case SkOperand2::kS32: |
| 192 | addToken(reg == kAccumulator ? kIntegerAccumulator : kIntegerOperand); |
| 193 | addTokenInt(value.fOperand.fS32); |
| 194 | if (reg == kAccumulator) |
| 195 | fAccumulatorType = SkOperand2::kS32; |
| 196 | else |
| 197 | fOperandInUse = true; |
| 198 | break; |
| 199 | case SkOperand2::kScalar: |
| 200 | addToken(reg == kAccumulator ? kScalarAccumulator : kScalarOperand); |
| 201 | addTokenScalar(value.fOperand.fScalar); |
| 202 | if (reg == kAccumulator) |
| 203 | fAccumulatorType = SkOperand2::kScalar; |
| 204 | else |
| 205 | fOperandInUse = true; |
| 206 | break; |
| 207 | case SkOperand2::kString: |
| 208 | addToken(reg == kAccumulator ? kStringAccumulator : kStringOperand); |
| 209 | addTokenString(*value.fOperand.fString); |
| 210 | if (reg == kAccumulator) |
| 211 | fAccumulatorType = SkOperand2::kString; |
| 212 | else |
| 213 | fOperandInUse = true; |
| 214 | break; |
| 215 | default: |
| 216 | SkASSERT(0); //!!! not implemented yet |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | int SkScriptEngine2::arithmeticOp(char ch, char nextChar, bool lastPush) { |
| 221 | Op op = kUnassigned; |
| 222 | bool reverseOperands = false; |
| 223 | bool negateResult = false; |
| 224 | int advance = 1; |
| 225 | switch (ch) { |
| 226 | case '+': |
| 227 | // !!! ignoring unary plus as implemented here has the side effect of |
| 228 | // suppressing errors like +"hi" |
| 229 | if (lastPush == false) // unary plus, don't push an operator |
reed@android.com | 800046e | 2009-10-14 09:36:25 +0000 | [diff] [blame] | 230 | return advance; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 231 | op = kAdd; |
| 232 | break; |
| 233 | case '-': |
| 234 | op = lastPush ? kSubtract : kMinus; |
| 235 | break; |
| 236 | case '*': |
| 237 | op = kMultiply; |
| 238 | break; |
| 239 | case '/': |
| 240 | op = kDivide; |
| 241 | break; |
| 242 | case '>': |
| 243 | if (nextChar == '>') { |
| 244 | op = kShiftRight; |
| 245 | goto twoChar; |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 246 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 247 | op = kGreaterEqual; |
| 248 | if (nextChar == '=') |
| 249 | goto twoChar; |
| 250 | reverseOperands = negateResult = true; |
| 251 | break; |
| 252 | case '<': |
| 253 | if (nextChar == '<') { |
| 254 | op = kShiftLeft; |
| 255 | goto twoChar; |
| 256 | } |
| 257 | op = kGreaterEqual; |
| 258 | reverseOperands = nextChar == '='; |
| 259 | negateResult = ! reverseOperands; |
| 260 | advance += reverseOperands; |
| 261 | break; |
| 262 | case '=': |
| 263 | if (nextChar == '=') { |
| 264 | op = kEqual; |
| 265 | goto twoChar; |
| 266 | } |
| 267 | break; |
| 268 | case '!': |
| 269 | if (nextChar == '=') { |
| 270 | op = kEqual; |
| 271 | negateResult = true; |
| 272 | twoChar: |
| 273 | advance++; |
| 274 | break; |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 275 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 276 | op = kLogicalNot; |
| 277 | break; |
| 278 | case '?': |
| 279 | op =(Op) kIf; |
| 280 | break; |
| 281 | case ':': |
| 282 | op = (Op) kElse; |
| 283 | break; |
| 284 | case '^': |
| 285 | op = kXor; |
| 286 | break; |
| 287 | case '(': |
| 288 | *fOpStack.push() = (Op) kParen; |
reed@android.com | 800046e | 2009-10-14 09:36:25 +0000 | [diff] [blame] | 289 | return advance; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 290 | case '&': |
| 291 | SkASSERT(nextChar != '&'); |
| 292 | op = kBitAnd; |
| 293 | break; |
| 294 | case '|': |
| 295 | SkASSERT(nextChar != '|'); |
| 296 | op = kBitOr; |
| 297 | break; |
| 298 | case '%': |
| 299 | op = kModulo; |
| 300 | break; |
| 301 | case '~': |
| 302 | op = kBitNot; |
| 303 | break; |
| 304 | } |
| 305 | if (op == kUnassigned) |
| 306 | return 0; |
| 307 | signed char precedence = gPrecedence[op]; |
| 308 | do { |
| 309 | int idx = 0; |
| 310 | Op compare; |
| 311 | do { |
| 312 | compare = fOpStack.index(idx); |
| 313 | if ((compare & kArtificialOp) == 0) |
| 314 | break; |
| 315 | idx++; |
| 316 | } while (true); |
| 317 | signed char topPrecedence = gPrecedence[compare]; |
| 318 | SkASSERT(topPrecedence != -1); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 319 | if (topPrecedence > precedence || (topPrecedence == precedence && |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 320 | gOpAttributes[op].fLeftType == SkOperand2::kNoType)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 321 | break; |
| 322 | } |
| 323 | processOp(); |
| 324 | } while (true); |
| 325 | if (negateResult) |
| 326 | *fOpStack.push() = (Op) (kLogicalNot | kArtificialOp); |
| 327 | fOpStack.push(op); |
| 328 | if (reverseOperands) |
| 329 | *fOpStack.push() = (Op) (kFlipOps | kArtificialOp); |
reed@android.com | 800046e | 2009-10-14 09:36:25 +0000 | [diff] [blame] | 330 | |
| 331 | return advance; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 332 | } |
| 333 | |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 334 | bool SkScriptEngine2::convertParams(SkTDArray<SkScriptValue2>* params, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 335 | const SkOperand2::OpType* paramTypes, int paramCount) { |
| 336 | int count = params->count(); |
| 337 | if (count > paramCount) { |
| 338 | SkASSERT(0); |
| 339 | return false; // too many parameters passed |
| 340 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 341 | for (int index = 0; index < count; index++) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 342 | convertTo(paramTypes[index], &(*params)[index]); |
| 343 | return true; |
| 344 | } |
| 345 | |
| 346 | bool SkScriptEngine2::convertTo(SkOperand2::OpType toType, SkScriptValue2* value ) { |
| 347 | SkOperand2::OpType type = value->fType; |
| 348 | if (type == toType) |
| 349 | return true; |
| 350 | if (type == SkOperand2::kObject) { |
| 351 | if (handleUnbox(value) == false) |
| 352 | return false; |
| 353 | return convertTo(toType, value); |
| 354 | } |
| 355 | return ConvertTo(this, toType, value); |
| 356 | } |
| 357 | |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 358 | bool SkScriptEngine2::evaluateDot(const char*& script) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 359 | size_t fieldLength = token_length(++script); // skip dot |
| 360 | SkASSERT(fieldLength > 0); // !!! add error handling |
| 361 | const char* field = script; |
| 362 | script += fieldLength; |
| 363 | bool success = handleProperty(); |
| 364 | if (success == false) { |
| 365 | fError = kCouldNotFindReferencedID; |
| 366 | goto error; |
| 367 | } |
| 368 | return evaluateDotParam(script, field, fieldLength); |
| 369 | error: |
| 370 | return false; |
| 371 | } |
| 372 | |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 373 | bool SkScriptEngine2::evaluateDotParam(const char*& script, const char* field, size_t fieldLength) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 374 | SkScriptValue2& top = fValueStack.top(); |
| 375 | if (top.fType != SkOperand2::kObject) |
| 376 | return false; |
| 377 | void* object = top.fOperand.fObject; |
| 378 | fValueStack.pop(); |
| 379 | char ch; // see if it is a simple member or a function |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 380 | while (is_ws(ch = script[0])) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 381 | script++; |
| 382 | bool success = true; |
| 383 | if (ch != '(') |
| 384 | success = handleMember(field, fieldLength, object); |
| 385 | else { |
| 386 | SkTDArray<SkScriptValue2> params; |
| 387 | *fBraceStack.push() = kFunctionBrace; |
| 388 | success = functionParams(&script, ¶ms); |
| 389 | if (success) |
| 390 | success = handleMemberFunction(field, fieldLength, object, ¶ms); |
| 391 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 392 | return success; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | bool SkScriptEngine2::evaluateScript(const char** scriptPtr, SkScriptValue2* value) { |
| 396 | // fArrayOffset = 0; // no support for structures for now |
| 397 | bool success; |
| 398 | const char* inner; |
| 399 | if (strncmp(*scriptPtr, "#script:", sizeof("#script:") - 1) == 0) { |
| 400 | *scriptPtr += sizeof("#script:") - 1; |
| 401 | if (fReturnType == SkOperand2::kNoType || fReturnType == SkOperand2::kString) { |
| 402 | success = innerScript(scriptPtr, value); |
| 403 | SkASSERT(success); |
| 404 | inner = value->fOperand.fString->c_str(); |
| 405 | scriptPtr = &inner; |
| 406 | } |
| 407 | } |
| 408 | success = innerScript(scriptPtr, value); |
| 409 | const char* script = *scriptPtr; |
| 410 | char ch; |
| 411 | while (is_ws(ch = script[0])) |
| 412 | script++; |
| 413 | if (ch != '\0') { |
| 414 | // error may trigger on scripts like "50,0" that were intended to be written as "[50, 0]" |
| 415 | return false; |
| 416 | } |
| 417 | return success; |
| 418 | } |
| 419 | |
| 420 | void SkScriptEngine2::forget(SkOpArray* array) { |
| 421 | if (array->getType() == SkOperand2::kString) { |
| 422 | for (int index = 0; index < array->count(); index++) { |
| 423 | SkString* string = (*array)[index].fString; |
| 424 | int found = fTrackString.find(string); |
| 425 | if (found >= 0) |
| 426 | fTrackString.remove(found); |
| 427 | } |
| 428 | return; |
| 429 | } |
| 430 | if (array->getType() == SkOperand2::kArray) { |
| 431 | for (int index = 0; index < array->count(); index++) { |
| 432 | SkOpArray* child = (*array)[index].fArray; |
| 433 | forget(child); // forgets children of child |
| 434 | int found = fTrackArray.find(child); |
| 435 | if (found >= 0) |
| 436 | fTrackArray.remove(found); |
| 437 | } |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | bool SkScriptEngine2::functionParams(const char** scriptPtr, SkTDArray<SkScriptValue2>* params) { |
| 442 | (*scriptPtr)++; // skip open paren |
| 443 | *fOpStack.push() = (Op) kParen; |
| 444 | *fBraceStack.push() = kFunctionBrace; |
| 445 | do { |
| 446 | SkScriptValue2 value; |
| 447 | bool success = innerScript(scriptPtr, &value); |
| 448 | SkASSERT(success); |
| 449 | if (success == false) |
| 450 | return false; |
| 451 | *params->append() = value; |
| 452 | } while ((*scriptPtr)[-1] == ','); |
| 453 | fBraceStack.pop(); |
| 454 | fOpStack.pop(); // pop paren |
| 455 | (*scriptPtr)++; // advance beyond close paren |
| 456 | return true; |
| 457 | } |
| 458 | |
| 459 | size_t SkScriptEngine2::getTokenOffset() { |
| 460 | return fActiveStream->getOffset(); |
| 461 | } |
| 462 | |
| 463 | SkOperand2::OpType SkScriptEngine2::getUnboxType(SkOperand2 scriptValue) { |
| 464 | for (SkScriptCallBack** callBack = fCallBackArray.begin(); callBack < fCallBackArray.end(); callBack++) { |
| 465 | if ((*callBack)->getType() != SkScriptCallBack::kUnbox) |
| 466 | continue; |
| 467 | return (*callBack)->getReturnType(0, &scriptValue); |
| 468 | } |
| 469 | return SkOperand2::kObject; |
| 470 | } |
| 471 | |
| 472 | bool SkScriptEngine2::innerScript(const char** scriptPtr, SkScriptValue2* value) { |
| 473 | const char* script = *scriptPtr; |
| 474 | char ch; |
| 475 | bool lastPush = false; |
| 476 | bool success = true; |
| 477 | int opBalance = fOpStack.count(); |
| 478 | int baseBrace = fBraceStack.count(); |
| 479 | int branchBalance = fBranchStack.count(); |
| 480 | while ((ch = script[0]) != '\0') { |
| 481 | if (is_ws(ch)) { |
| 482 | script++; |
| 483 | continue; |
| 484 | } |
| 485 | SkScriptValue2 operand; |
| 486 | const char* dotCheck; |
| 487 | if (fBraceStack.count() > baseBrace) { |
| 488 | if (fBraceStack.top() == kArrayBrace) { |
| 489 | SkScriptValue2 tokenValue; |
| 490 | success = innerScript(&script, &tokenValue); // terminate and return on comma, close brace |
| 491 | SkASSERT(success); |
| 492 | { |
| 493 | SkOperand2::OpType type = fReturnType; |
| 494 | if (fReturnType == SkOperand2::kNoType) { |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 495 | // !!! short sighted; in the future, allow each returned array component to carry |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 496 | // its own type, and let caller do any needed conversions |
| 497 | if (value->fOperand.fArray->count() == 0) |
| 498 | value->fOperand.fArray->setType(type = tokenValue.fType); |
| 499 | else |
| 500 | type = value->fOperand.fArray->getType(); |
| 501 | } |
| 502 | if (tokenValue.fType != type) |
| 503 | convertTo(type, &tokenValue); |
| 504 | *value->fOperand.fArray->append() = tokenValue.fOperand; |
| 505 | } |
| 506 | lastPush = false; |
| 507 | continue; |
tomhudson@google.com | a7ed3cc | 2011-07-29 13:20:06 +0000 | [diff] [blame] | 508 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 509 | SkASSERT(token_length(script) > 0); |
tomhudson@google.com | a7ed3cc | 2011-07-29 13:20:06 +0000 | [diff] [blame] | 510 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 511 | } |
| 512 | if (lastPush != false && fTokenLength > 0) { |
| 513 | if (ch == '(') { |
| 514 | *fBraceStack.push() = kFunctionBrace; |
| 515 | SkString functionName(fToken, fTokenLength); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 516 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 517 | if (handleFunction(&script) == false) |
| 518 | return false; |
| 519 | lastPush = true; |
| 520 | continue; |
| 521 | } else if (ch == '[') { |
| 522 | if (handleProperty() == false) { |
| 523 | SkASSERT(0); |
| 524 | return false; |
| 525 | } |
| 526 | if (handleArrayIndexer(&script) == false) |
| 527 | return false; |
| 528 | lastPush = true; |
| 529 | continue; |
| 530 | } else if (ch != '.') { |
| 531 | if (handleProperty() == false) { |
| 532 | SkASSERT(0); |
| 533 | return false; |
| 534 | } |
| 535 | lastPush = true; |
| 536 | continue; |
| 537 | } |
| 538 | } |
| 539 | if (ch == '0' && (script[1] & ~0x20) == 'X') { |
| 540 | SkASSERT(lastPush == false); |
| 541 | script += 2; |
| 542 | script = SkParse::FindHex(script, (uint32_t*) &operand.fOperand.fS32); |
| 543 | SkASSERT(script); |
| 544 | goto intCommon; |
| 545 | } |
| 546 | if (lastPush == false && ch == '.') |
| 547 | goto scalarCommon; |
| 548 | if (ch >= '0' && ch <= '9') { |
| 549 | SkASSERT(lastPush == false); |
| 550 | dotCheck = SkParse::FindS32(script, &operand.fOperand.fS32); |
| 551 | if (dotCheck[0] != '.') { |
| 552 | script = dotCheck; |
| 553 | intCommon: |
| 554 | operand.fType = SkOperand2::kS32; |
| 555 | } else { |
| 556 | scalarCommon: |
| 557 | script = SkParse::FindScalar(script, &operand.fOperand.fScalar); |
| 558 | operand.fType = SkOperand2::kScalar; |
| 559 | } |
| 560 | operand.fIsConstant = SkScriptValue2::kConstant; |
| 561 | fValueStack.push(operand); |
| 562 | lastPush = true; |
| 563 | continue; |
| 564 | } |
| 565 | int length = token_length(script); |
| 566 | if (length > 0) { |
| 567 | SkASSERT(lastPush == false); |
| 568 | fToken = script; |
| 569 | fTokenLength = length; |
| 570 | script += length; |
| 571 | lastPush = true; |
| 572 | continue; |
| 573 | } |
| 574 | char startQuote = ch; |
| 575 | if (startQuote == '\'' || startQuote == '\"') { |
| 576 | SkASSERT(lastPush == false); |
| 577 | operand.fOperand.fString = new SkString(); |
| 578 | ++script; |
| 579 | const char* stringStart = script; |
| 580 | do { // measure string |
| 581 | if (script[0] == '\\') |
| 582 | ++script; |
| 583 | ++script; |
| 584 | SkASSERT(script[0]); // !!! throw an error |
| 585 | } while (script[0] != startQuote); |
| 586 | operand.fOperand.fString->set(stringStart, script - stringStart); |
| 587 | script = stringStart; |
| 588 | char* stringWrite = operand.fOperand.fString->writable_str(); |
| 589 | do { // copy string |
| 590 | if (script[0] == '\\') |
| 591 | ++script; |
| 592 | *stringWrite++ = script[0]; |
| 593 | ++script; |
| 594 | SkASSERT(script[0]); // !!! throw an error |
| 595 | } while (script[0] != startQuote); |
| 596 | ++script; |
| 597 | track(operand.fOperand.fString); |
| 598 | operand.fType = SkOperand2::kString; |
| 599 | operand.fIsConstant = SkScriptValue2::kConstant; |
| 600 | fValueStack.push(operand); |
| 601 | lastPush = true; |
| 602 | continue; |
| 603 | } |
| 604 | if (ch == '.') { |
| 605 | if (fTokenLength == 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 606 | int tokenLength = token_length(++script); |
| 607 | const char* token = script; |
| 608 | script += tokenLength; |
| 609 | SkASSERT(fValueStack.count() > 0); // !!! add error handling |
| 610 | SkScriptValue2 top; |
| 611 | fValueStack.pop(&top); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 612 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 613 | addTokenInt(top.fType); |
| 614 | addToken(kBoxToken); |
| 615 | top.fType = SkOperand2::kObject; |
| 616 | top.fIsConstant = SkScriptValue2::kVariable; |
| 617 | fConstExpression = false; |
| 618 | fValueStack.push(top); |
| 619 | success = evaluateDotParam(script, token, tokenLength); |
| 620 | SkASSERT(success); |
| 621 | lastPush = true; |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 622 | continue; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 623 | } |
| 624 | // get next token, and evaluate immediately |
| 625 | success = evaluateDot(script); |
| 626 | if (success == false) { |
| 627 | // SkASSERT(0); |
| 628 | return false; |
| 629 | } |
| 630 | lastPush = true; |
| 631 | continue; |
| 632 | } |
| 633 | if (ch == '[') { |
| 634 | if (lastPush == false) { |
| 635 | script++; |
| 636 | *fBraceStack.push() = kArrayBrace; |
| 637 | operand.fOperand.fArray = value->fOperand.fArray = new SkOpArray(fReturnType); |
| 638 | track(value->fOperand.fArray); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 639 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 640 | operand.fType = SkOperand2::kArray; |
| 641 | operand.fIsConstant = SkScriptValue2::kVariable; |
| 642 | fValueStack.push(operand); |
| 643 | continue; |
| 644 | } |
| 645 | if (handleArrayIndexer(&script) == false) |
| 646 | return false; |
| 647 | lastPush = true; |
| 648 | continue; |
| 649 | } |
| 650 | #if 0 // structs not supported for now |
| 651 | if (ch == '{') { |
| 652 | if (lastPush == false) { |
| 653 | script++; |
| 654 | *fBraceStack.push() = kStructBrace; |
| 655 | operand.fS32 = 0; |
| 656 | *fTypeStack.push() = (SkOpType) kStruct; |
| 657 | fOperandStack.push(operand); |
| 658 | continue; |
| 659 | } |
| 660 | SkASSERT(0); // braces in other contexts aren't supported yet |
| 661 | } |
| 662 | #endif |
| 663 | if (ch == ')' && fBraceStack.count() > 0) { |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 664 | BraceStyle braceStyle = fBraceStack.top(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 665 | if (braceStyle == kFunctionBrace) { |
| 666 | fBraceStack.pop(); |
| 667 | break; |
| 668 | } |
| 669 | } |
| 670 | if (ch == ',' || ch == ']') { |
| 671 | if (ch != ',') { |
| 672 | BraceStyle match; |
| 673 | fBraceStack.pop(&match); |
| 674 | SkASSERT(match == kArrayBrace); |
| 675 | } |
| 676 | script++; |
| 677 | // !!! see if brace or bracket is correct closer |
| 678 | break; |
| 679 | } |
| 680 | char nextChar = script[1]; |
| 681 | int advance = logicalOp(ch, nextChar); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 682 | if (advance == 0) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 683 | advance = arithmeticOp(ch, nextChar, lastPush); |
| 684 | if (advance == 0) // unknown token |
| 685 | return false; |
| 686 | if (advance > 0) |
| 687 | script += advance; |
| 688 | lastPush = ch == ']' || ch == ')'; |
| 689 | } |
| 690 | if (fTokenLength > 0) { |
| 691 | success = handleProperty(); |
| 692 | SkASSERT(success); |
| 693 | } |
| 694 | int branchIndex = 0; |
| 695 | branchBalance = fBranchStack.count() - branchBalance; |
| 696 | fBranchPopAllowed = false; |
| 697 | while (branchIndex < branchBalance) { |
| 698 | Branch& branch = fBranchStack.index(branchIndex++); |
| 699 | if (branch.fPrimed == Branch::kIsPrimed) |
| 700 | break; |
| 701 | Op branchOp = branch.fOperator; |
| 702 | SkOperand2::OpType lastType = fValueStack.top().fType; |
| 703 | addTokenValue(fValueStack.top(), kAccumulator); |
| 704 | fValueStack.pop(); |
| 705 | if (branchOp == kLogicalAnd || branchOp == kLogicalOr) { |
| 706 | if (branch.fOperator == kLogicalAnd) |
| 707 | branch.prime(); |
| 708 | addToken(kToBool); |
| 709 | } else { |
| 710 | resolveBranch(branch); |
| 711 | SkScriptValue2 operand; |
| 712 | operand.fType = lastType; |
| 713 | // !!! note that many branching expressions could be constant |
| 714 | // today, we always evaluate branches as returning variables |
| 715 | operand.fIsConstant = SkScriptValue2::kVariable; |
| 716 | fValueStack.push(operand); |
| 717 | } |
| 718 | if (branch.fDone == Branch::kIsNotDone) |
| 719 | branch.prime(); |
| 720 | } |
| 721 | fBranchPopAllowed = true; |
| 722 | while (fBranchStack.top().fDone == Branch::kIsDone) |
| 723 | fBranchStack.pop(); |
| 724 | while (fOpStack.count() > opBalance) { // leave open paren |
| 725 | if (processOp() == false) |
| 726 | return false; |
| 727 | } |
| 728 | SkOperand2::OpType topType = fValueStack.count() > 0 ? fValueStack.top().fType : SkOperand2::kNoType; |
| 729 | if (topType != fReturnType && |
| 730 | topType == SkOperand2::kString && fReturnType != SkOperand2::kNoType) { // if result is a string, give handle property a chance to convert it to the property value |
| 731 | SkString* string = fValueStack.top().fOperand.fString; |
| 732 | fToken = string->c_str(); |
| 733 | fTokenLength = string->size(); |
| 734 | fValueStack.pop(); |
| 735 | success = handleProperty(); |
| 736 | if (success == false) { // if it couldn't convert, return string (error?) |
| 737 | SkScriptValue2 operand; |
| 738 | operand.fType = SkOperand2::kString; |
| 739 | operand.fOperand.fString = string; |
| 740 | operand.fIsConstant = SkScriptValue2::kVariable; // !!! ? |
| 741 | fValueStack.push(operand); |
| 742 | } |
| 743 | } |
| 744 | if (fStream.getOffset() > 0) { |
| 745 | addToken(kEnd); |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 746 | SkAutoDataUnref data(fStream.copyToData()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 747 | #ifdef SK_DEBUG |
robertphillips@google.com | 41f9e6e | 2012-07-10 17:41:27 +0000 | [diff] [blame] | 748 | decompile(data->bytes(), data->size()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 749 | #endif |
| 750 | SkScriptRuntime runtime(fCallBackArray); |
robertphillips@google.com | 59f46b8 | 2012-07-10 17:30:58 +0000 | [diff] [blame] | 751 | runtime.executeTokens((unsigned char*) data->bytes()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 752 | SkScriptValue2 value1; |
| 753 | runtime.getResult(&value1.fOperand); |
| 754 | value1.fType = fReturnType; |
| 755 | fValueStack.push(value1); |
| 756 | } |
| 757 | if (value) { |
| 758 | if (fValueStack.count() == 0) |
| 759 | return false; |
| 760 | fValueStack.pop(value); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 761 | if (value->fType != fReturnType && value->fType == SkOperand2::kObject && |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 762 | fReturnType != SkOperand2::kNoType) |
| 763 | convertTo(fReturnType, value); |
| 764 | } |
| 765 | // if (fBranchStack.top().fOpStackDepth > fOpStack.count()) |
| 766 | // resolveBranch(); |
| 767 | *scriptPtr = script; |
| 768 | return true; // no error |
| 769 | } |
| 770 | |
| 771 | bool SkScriptEngine2::handleArrayIndexer(const char** scriptPtr) { |
| 772 | SkScriptValue2 scriptValue; |
| 773 | (*scriptPtr)++; |
| 774 | *fOpStack.push() = (Op) kParen; |
| 775 | *fBraceStack.push() = kArrayBrace; |
| 776 | SkOperand2::OpType saveType = fReturnType; |
| 777 | fReturnType = SkOperand2::kS32; |
| 778 | bool success = innerScript(scriptPtr, &scriptValue); |
| 779 | fReturnType = saveType; |
| 780 | SkASSERT(success); |
| 781 | success = convertTo(SkOperand2::kS32, &scriptValue); |
| 782 | SkASSERT(success); |
| 783 | int index = scriptValue.fOperand.fS32; |
| 784 | fValueStack.pop(&scriptValue); |
| 785 | if (scriptValue.fType == SkOperand2::kObject) { |
| 786 | success = handleUnbox(&scriptValue); |
| 787 | SkASSERT(success); |
| 788 | SkASSERT(scriptValue.fType == SkOperand2::kArray); |
| 789 | } |
| 790 | scriptValue.fType = scriptValue.fOperand.fArray->getType(); |
| 791 | // SkASSERT(index >= 0); |
| 792 | if ((unsigned) index >= (unsigned) scriptValue.fOperand.fArray->count()) { |
| 793 | fError = kArrayIndexOutOfBounds; |
| 794 | return false; |
| 795 | } |
| 796 | scriptValue.fOperand = scriptValue.fOperand.fArray->begin()[index]; |
| 797 | scriptValue.fIsConstant = SkScriptValue2::kVariable; |
| 798 | fValueStack.push(scriptValue); |
| 799 | fOpStack.pop(); // pop paren |
| 800 | return success; |
| 801 | } |
| 802 | |
| 803 | bool SkScriptEngine2::handleFunction(const char** scriptPtr) { |
| 804 | const char* functionName = fToken; |
| 805 | size_t functionNameLen = fTokenLength; |
| 806 | fTokenLength = 0; |
| 807 | SkTDArray<SkScriptValue2> params; |
| 808 | bool success = functionParams(scriptPtr, ¶ms); |
| 809 | if (success == false) |
| 810 | goto done; |
| 811 | { |
| 812 | for (SkScriptCallBack** callBack = fCallBackArray.begin(); callBack < fCallBackArray.end(); callBack++) { |
| 813 | if ((*callBack)->getType() != SkScriptCallBack::kFunction) |
| 814 | continue; |
| 815 | SkScriptValue2 callbackResult; |
| 816 | success = (*callBack)->getReference(functionName, functionNameLen, &callbackResult); |
| 817 | if (success) { |
| 818 | callbackResult.fType = (*callBack)->getReturnType(callbackResult.fOperand.fReference, NULL); |
| 819 | callbackResult.fIsConstant = SkScriptValue2::kVariable; |
| 820 | fValueStack.push(callbackResult); |
| 821 | goto done; |
| 822 | } |
| 823 | } |
| 824 | } |
| 825 | return false; |
| 826 | done: |
| 827 | fOpStack.pop(); |
| 828 | return success; |
| 829 | } |
| 830 | |
| 831 | bool SkScriptEngine2::handleMember(const char* field, size_t len, void* object) { |
| 832 | bool success = true; |
| 833 | for (SkScriptCallBack** callBack = fCallBackArray.begin(); callBack < fCallBackArray.end(); callBack++) { |
| 834 | if ((*callBack)->getType() != SkScriptCallBack::kMember) |
| 835 | continue; |
| 836 | SkScriptValue2 callbackResult; |
| 837 | success = (*callBack)->getReference(field, len, &callbackResult); |
| 838 | if (success) { |
| 839 | if (callbackResult.fType == SkOperand2::kString) |
| 840 | track(callbackResult.fOperand.fString); |
| 841 | callbackResult.fIsConstant = SkScriptValue2::kVariable; |
| 842 | fValueStack.push(callbackResult); |
| 843 | goto done; |
| 844 | } |
| 845 | } |
| 846 | return false; |
| 847 | done: |
| 848 | return success; |
| 849 | } |
| 850 | |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 851 | bool SkScriptEngine2::handleMemberFunction(const char* field, size_t len, void* object, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 852 | SkTDArray<SkScriptValue2>* params) { |
| 853 | bool success = true; |
| 854 | for (SkScriptCallBack** callBack = fCallBackArray.begin(); callBack < fCallBackArray.end(); callBack++) { |
| 855 | if ((*callBack)->getType() != SkScriptCallBack::kMemberFunction) |
| 856 | continue; |
| 857 | SkScriptValue2 callbackResult; |
| 858 | success = (*callBack)->getReference(field, len, &callbackResult); |
| 859 | if (success) { |
| 860 | if (callbackResult.fType == SkOperand2::kString) |
| 861 | track(callbackResult.fOperand.fString); |
| 862 | callbackResult.fIsConstant = SkScriptValue2::kVariable; |
| 863 | fValueStack.push(callbackResult); |
| 864 | goto done; |
| 865 | } |
| 866 | } |
| 867 | return false; |
| 868 | done: |
| 869 | return success; |
| 870 | } |
| 871 | |
| 872 | bool SkScriptEngine2::handleProperty() { |
| 873 | bool success = true; |
| 874 | for (SkScriptCallBack** callBack = fCallBackArray.begin(); callBack < fCallBackArray.end(); callBack++) { |
| 875 | if ((*callBack)->getType() != SkScriptCallBack::kProperty) |
| 876 | continue; |
| 877 | SkScriptValue2 callbackResult; |
| 878 | success = (*callBack)->getReference(fToken, fTokenLength, &callbackResult); |
| 879 | if (success) { |
| 880 | if (callbackResult.fType == SkOperand2::kString && callbackResult.fOperand.fString == NULL) { |
| 881 | callbackResult.fOperand.fString = new SkString(fToken, fTokenLength); |
| 882 | track(callbackResult.fOperand.fString); |
| 883 | } |
| 884 | callbackResult.fIsConstant = SkScriptValue2::kVariable; |
| 885 | fValueStack.push(callbackResult); |
| 886 | goto done; |
| 887 | } |
| 888 | } |
| 889 | done: |
| 890 | fTokenLength = 0; |
| 891 | return success; |
| 892 | } |
| 893 | |
| 894 | bool SkScriptEngine2::handleUnbox(SkScriptValue2* scriptValue) { |
| 895 | bool success = true; |
| 896 | for (SkScriptCallBack** callBack = fCallBackArray.begin(); callBack < fCallBackArray.end(); callBack++) { |
| 897 | if ((*callBack)->getType() != SkScriptCallBack::kUnbox) |
| 898 | continue; |
| 899 | SkScriptCallBackConvert* callBackConvert = (SkScriptCallBackConvert*) *callBack; |
| 900 | success = callBackConvert->convert(scriptValue->fType, &scriptValue->fOperand); |
| 901 | if (success) { |
| 902 | if (scriptValue->fType == SkOperand2::kString) |
| 903 | track(scriptValue->fOperand.fString); |
| 904 | goto done; |
| 905 | } |
| 906 | } |
| 907 | return false; |
| 908 | done: |
| 909 | return success; |
| 910 | } |
| 911 | |
| 912 | // note that entire expression is treated as if it were enclosed in parens |
| 913 | // an open paren is always the first thing in the op stack |
| 914 | |
| 915 | int SkScriptEngine2::logicalOp(char ch, char nextChar) { |
| 916 | int advance = 1; |
| 917 | Op op; |
| 918 | signed char precedence; |
| 919 | switch (ch) { |
| 920 | case ')': |
| 921 | op = (Op) kParen; |
| 922 | break; |
| 923 | case ']': |
| 924 | op = (Op) kArrayOp; |
| 925 | break; |
| 926 | case '?': |
| 927 | op = (Op) kIf; |
| 928 | break; |
| 929 | case ':': |
| 930 | op = (Op) kElse; |
| 931 | break; |
| 932 | case '&': |
| 933 | if (nextChar != '&') |
| 934 | goto noMatch; |
| 935 | op = kLogicalAnd; |
| 936 | advance = 2; |
| 937 | break; |
| 938 | case '|': |
| 939 | if (nextChar != '|') |
| 940 | goto noMatch; |
| 941 | op = kLogicalOr; |
| 942 | advance = 2; |
| 943 | break; |
| 944 | default: |
| 945 | noMatch: |
| 946 | return 0; |
| 947 | } |
| 948 | precedence = gPrecedence[op]; |
| 949 | int branchIndex = 0; |
| 950 | fBranchPopAllowed = false; |
| 951 | do { |
| 952 | while (gPrecedence[fOpStack.top() & ~kArtificialOp] < precedence) |
| 953 | processOp(); |
| 954 | Branch& branch = fBranchStack.index(branchIndex++); |
| 955 | Op branchOp = branch.fOperator; |
| 956 | if (gPrecedence[branchOp] >= precedence) |
| 957 | break; |
| 958 | addTokenValue(fValueStack.top(), kAccumulator); |
| 959 | fValueStack.pop(); |
| 960 | if (branchOp == kLogicalAnd || branchOp == kLogicalOr) { |
| 961 | if (branch.fOperator == kLogicalAnd) |
| 962 | branch.prime(); |
| 963 | addToken(kToBool); |
| 964 | } else |
| 965 | resolveBranch(branch); |
| 966 | if (branch.fDone == Branch::kIsNotDone) |
| 967 | branch.prime(); |
| 968 | } while (true); |
| 969 | fBranchPopAllowed = true; |
| 970 | while (fBranchStack.top().fDone == Branch::kIsDone) |
| 971 | fBranchStack.pop(); |
| 972 | processLogicalOp(op); |
| 973 | return advance; |
| 974 | } |
| 975 | |
| 976 | void SkScriptEngine2::processLogicalOp(Op op) { |
| 977 | switch (op) { |
| 978 | case kParen: |
| 979 | case kArrayOp: |
| 980 | SkASSERT(fOpStack.count() > 1 && fOpStack.top() == op); // !!! add error handling |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 981 | if (op == kParen) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 982 | fOpStack.pop(); |
| 983 | else { |
| 984 | SkScriptValue2 value; |
| 985 | fValueStack.pop(&value); |
| 986 | SkASSERT(value.fType == SkOperand2::kS32 || value.fType == SkOperand2::kScalar); // !!! add error handling (although, could permit strings eventually) |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 987 | int index = value.fType == SkOperand2::kScalar ? SkScalarFloor(value.fOperand.fScalar) : |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 988 | value.fOperand.fS32; |
| 989 | SkScriptValue2 arrayValue; |
| 990 | fValueStack.pop(&arrayValue); |
| 991 | SkASSERT(arrayValue.fType == SkOperand2::kArray); // !!! add error handling |
| 992 | SkOpArray* array = arrayValue.fOperand.fArray; |
| 993 | SkOperand2 operand; |
humper@google.com | 0e51577 | 2013-01-07 19:54:40 +0000 | [diff] [blame] | 994 | SkDEBUGCODE(bool success = ) array->getIndex(index, &operand); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 995 | SkASSERT(success); // !!! add error handling |
| 996 | SkScriptValue2 resultValue; |
| 997 | resultValue.fType = array->getType(); |
| 998 | resultValue.fOperand = operand; |
| 999 | resultValue.fIsConstant = SkScriptValue2::kVariable; |
| 1000 | fValueStack.push(resultValue); |
| 1001 | } |
| 1002 | break; |
| 1003 | case kIf: { |
| 1004 | if (fAccumulatorType == SkOperand2::kNoType) { |
| 1005 | addTokenValue(fValueStack.top(), kAccumulator); |
| 1006 | fValueStack.pop(); |
| 1007 | } |
| 1008 | SkASSERT(fAccumulatorType != SkOperand2::kString); // !!! add error handling |
| 1009 | addToken(kIfOp); |
| 1010 | Branch branch(op, fOpStack.count(), getTokenOffset()); |
| 1011 | *fBranchStack.push() = branch; |
| 1012 | addTokenInt(0); // placeholder for future branch |
| 1013 | fAccumulatorType = SkOperand2::kNoType; |
| 1014 | } break; |
| 1015 | case kElse: { |
| 1016 | addTokenValue(fValueStack.top(), kAccumulator); |
| 1017 | fValueStack.pop(); |
| 1018 | addToken(kElseOp); |
| 1019 | size_t newOffset = getTokenOffset(); |
| 1020 | addTokenInt(0); // placeholder for future branch |
| 1021 | Branch& branch = fBranchStack.top(); |
| 1022 | resolveBranch(branch); |
| 1023 | branch.fOperator = op; |
| 1024 | branch.fDone = Branch::kIsNotDone; |
| 1025 | SkASSERT(branch.fOpStackDepth == fOpStack.count()); |
| 1026 | branch.fOffset = newOffset; |
| 1027 | fAccumulatorType = SkOperand2::kNoType; |
| 1028 | } break; |
| 1029 | case kLogicalAnd: |
| 1030 | case kLogicalOr: { |
| 1031 | Branch& oldTop = fBranchStack.top(); |
| 1032 | Branch::Primed wasPrime = oldTop.fPrimed; |
| 1033 | Branch::Done wasDone = oldTop.fDone; |
| 1034 | oldTop.fPrimed = Branch::kIsNotPrimed; |
| 1035 | oldTop.fDone = Branch::kIsNotDone; |
| 1036 | if (fAccumulatorType == SkOperand2::kNoType) { |
| 1037 | SkASSERT(fValueStack.top().fType == SkOperand2::kS32); // !!! add error handling, and conversion to int? |
| 1038 | addTokenValue(fValueStack.top(), kAccumulator); |
| 1039 | fValueStack.pop(); |
tomhudson@google.com | a7ed3cc | 2011-07-29 13:20:06 +0000 | [diff] [blame] | 1040 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1041 | SkASSERT(fAccumulatorType == SkOperand2::kS32); |
tomhudson@google.com | a7ed3cc | 2011-07-29 13:20:06 +0000 | [diff] [blame] | 1042 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1043 | // if 'and', write beq goto opcode after end of predicate (after to bool) |
| 1044 | // if 'or', write bne goto to bool |
| 1045 | addToken(op == kLogicalAnd ? kLogicalAndInt : kLogicalOrInt); |
| 1046 | Branch branch(op, fOpStack.count(), getTokenOffset()); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1047 | addTokenInt(0); // placeholder for future branch |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1048 | oldTop.fPrimed = wasPrime; |
| 1049 | oldTop.fDone = wasDone; |
| 1050 | *fBranchStack.push() = branch; |
| 1051 | fAccumulatorType = SkOperand2::kNoType; |
| 1052 | } break; |
| 1053 | default: |
| 1054 | SkASSERT(0); |
| 1055 | } |
| 1056 | } |
| 1057 | |
| 1058 | bool SkScriptEngine2::processOp() { |
| 1059 | Op op; |
| 1060 | fOpStack.pop(&op); |
| 1061 | op = (Op) (op & ~kArtificialOp); |
| 1062 | const OperatorAttributes* attributes = &gOpAttributes[op]; |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 1063 | SkScriptValue2 value1; |
| 1064 | memset(&value1, 0, sizeof(SkScriptValue2)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1065 | SkScriptValue2 value2; |
| 1066 | fValueStack.pop(&value2); |
| 1067 | value2.fIsWritten = SkScriptValue2::kUnwritten; |
| 1068 | // SkScriptEngine2::SkTypeOp convert1[3]; |
| 1069 | // SkScriptEngine2::SkTypeOp convert2[3]; |
| 1070 | // SkScriptEngine2::SkTypeOp* convert2Ptr = convert2; |
| 1071 | bool constantOperands = value2.fIsConstant == SkScriptValue2::kConstant; |
| 1072 | if (attributes->fLeftType != SkOperand2::kNoType) { |
| 1073 | fValueStack.pop(&value1); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1074 | constantOperands &= value1.fIsConstant == SkScriptValue2::kConstant; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1075 | value1.fIsWritten = SkScriptValue2::kUnwritten; |
| 1076 | if (op == kFlipOps) { |
| 1077 | SkTSwap(value1, value2); |
| 1078 | fOpStack.pop(&op); |
| 1079 | op = (Op) (op & ~kArtificialOp); |
| 1080 | attributes = &gOpAttributes[op]; |
| 1081 | if (constantOperands == false) |
| 1082 | addToken(kFlipOpsOp); |
| 1083 | } |
| 1084 | if (value1.fType == SkOperand2::kObject && (value1.fType & attributes->fLeftType) == 0) { |
| 1085 | value1.fType = getUnboxType(value1.fOperand); |
| 1086 | addToken(kUnboxToken); |
| 1087 | } |
| 1088 | } |
| 1089 | if (value2.fType == SkOperand2::kObject && (value2.fType & attributes->fLeftType) == 0) { |
| 1090 | value1.fType = getUnboxType(value2.fOperand); |
| 1091 | addToken(kUnboxToken2); |
| 1092 | } |
| 1093 | if (attributes->fLeftType != SkOperand2::kNoType) { |
| 1094 | if (value1.fType != value2.fType) { |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1095 | if ((attributes->fLeftType & SkOperand2::kString) && attributes->fBias & kTowardsString && |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1096 | ((value1.fType | value2.fType) & SkOperand2::kString)) { |
| 1097 | if (value1.fType == SkOperand2::kS32 || value1.fType == SkOperand2::kScalar) { |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1098 | addTokenConst(&value1, kAccumulator, SkOperand2::kString, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1099 | value1.fType == SkOperand2::kS32 ? kIntToString : kScalarToString); |
| 1100 | } |
| 1101 | if (value2.fType == SkOperand2::kS32 || value2.fType == SkOperand2::kScalar) { |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1102 | addTokenConst(&value2, kOperand, SkOperand2::kString, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1103 | value2.fType == SkOperand2::kS32 ? kIntToString2 : kScalarToString2); |
| 1104 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1105 | } else if (attributes->fLeftType & SkOperand2::kScalar && ((value1.fType | value2.fType) & |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1106 | SkOperand2::kScalar)) { |
| 1107 | if (value1.fType == SkOperand2::kS32) |
| 1108 | addTokenConst(&value1, kAccumulator, SkOperand2::kScalar, kIntToScalar); |
| 1109 | if (value2.fType == SkOperand2::kS32) |
| 1110 | addTokenConst(&value2, kOperand, SkOperand2::kScalar, kIntToScalar2); |
| 1111 | } |
| 1112 | } |
| 1113 | if ((value1.fType & attributes->fLeftType) == 0 || value1.fType != value2.fType) { |
| 1114 | if (value1.fType == SkOperand2::kString) |
| 1115 | addTokenConst(&value1, kAccumulator, SkOperand2::kScalar, kStringToScalar); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1116 | if (value1.fType == SkOperand2::kScalar && (attributes->fLeftType == SkOperand2::kS32 || |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1117 | value2.fType == SkOperand2::kS32)) |
| 1118 | addTokenConst(&value1, kAccumulator, SkOperand2::kS32, kScalarToInt); |
| 1119 | } |
| 1120 | } |
| 1121 | AddTokenRegister rhRegister = attributes->fLeftType != SkOperand2::kNoType ? |
| 1122 | kOperand : kAccumulator; |
| 1123 | if ((value2.fType & attributes->fRightType) == 0 || value1.fType != value2.fType) { |
| 1124 | if (value2.fType == SkOperand2::kString) |
| 1125 | addTokenConst(&value2, rhRegister, SkOperand2::kScalar, kStringToScalar2); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1126 | if (value2.fType == SkOperand2::kScalar && (attributes->fRightType == SkOperand2::kS32 || |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1127 | value1.fType == SkOperand2::kS32)) |
| 1128 | addTokenConst(&value2, rhRegister, SkOperand2::kS32, kScalarToInt2); |
| 1129 | } |
| 1130 | TypeOp typeOp = gTokens[op]; |
| 1131 | if (value2.fType == SkOperand2::kScalar) |
| 1132 | typeOp = (TypeOp) (typeOp + 1); |
| 1133 | else if (value2.fType == SkOperand2::kString) |
| 1134 | typeOp = (TypeOp) (typeOp + 2); |
| 1135 | SkDynamicMemoryWStream stream; |
tomhudson@google.com | a7ed3cc | 2011-07-29 13:20:06 +0000 | [diff] [blame] | 1136 | SkOperand2::OpType saveType = SkOperand2::kNoType; |
| 1137 | SkBool saveOperand = false; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1138 | if (constantOperands) { |
| 1139 | fActiveStream = &stream; |
| 1140 | saveType = fAccumulatorType; |
| 1141 | saveOperand = fOperandInUse; |
| 1142 | fAccumulatorType = SkOperand2::kNoType; |
| 1143 | fOperandInUse = false; |
| 1144 | } |
| 1145 | if (attributes->fLeftType != SkOperand2::kNoType) { // two operands |
| 1146 | if (value1.fIsWritten == SkScriptValue2::kUnwritten) |
| 1147 | addTokenValue(value1, kAccumulator); |
| 1148 | } |
| 1149 | if (value2.fIsWritten == SkScriptValue2::kUnwritten) |
| 1150 | addTokenValue(value2, rhRegister); |
| 1151 | addToken(typeOp); |
| 1152 | if (constantOperands) { |
| 1153 | addToken(kEnd); |
reed@google.com | 8a85d0c | 2011-06-24 19:12:12 +0000 | [diff] [blame] | 1154 | SkAutoDataUnref data(fStream.copyToData()); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1155 | #ifdef SK_DEBUG |
robertphillips@google.com | 41f9e6e | 2012-07-10 17:41:27 +0000 | [diff] [blame] | 1156 | decompile(data->bytes(), data->size()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1157 | #endif |
| 1158 | SkScriptRuntime runtime(fCallBackArray); |
robertphillips@google.com | 59f46b8 | 2012-07-10 17:30:58 +0000 | [diff] [blame] | 1159 | runtime.executeTokens((unsigned char*)data->bytes()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1160 | runtime.getResult(&value1.fOperand); |
| 1161 | if (attributes->fResultIsBoolean == kResultIsBoolean) |
| 1162 | value1.fType = SkOperand2::kS32; |
| 1163 | else if (attributes->fLeftType == SkOperand2::kNoType) // unary operand |
| 1164 | value1.fType = value2.fType; |
| 1165 | fValueStack.push(value1); |
| 1166 | if (value1.fType == SkOperand2::kString) |
| 1167 | runtime.untrack(value1.fOperand.fString); |
| 1168 | else if (value1.fType == SkOperand2::kArray) |
| 1169 | runtime.untrack(value1.fOperand.fArray); |
| 1170 | fActiveStream = &fStream; |
| 1171 | fAccumulatorType = saveType; |
| 1172 | fOperandInUse = saveOperand; |
| 1173 | return true; |
| 1174 | } |
| 1175 | value2.fIsConstant = SkScriptValue2::kVariable; |
| 1176 | fValueStack.push(value2); |
| 1177 | return true; |
| 1178 | } |
| 1179 | |
| 1180 | void SkScriptEngine2::Branch::resolve(SkDynamicMemoryWStream* stream, size_t off) { |
| 1181 | SkASSERT(fDone == kIsNotDone); |
| 1182 | fPrimed = kIsNotPrimed; |
| 1183 | fDone = kIsDone; |
| 1184 | SkASSERT(off > fOffset + sizeof(size_t)); |
| 1185 | size_t offset = off - fOffset - sizeof(offset); |
| 1186 | stream->write(&offset, fOffset, sizeof(offset)); |
| 1187 | } |
| 1188 | |
| 1189 | void SkScriptEngine2::resolveBranch(SkScriptEngine2::Branch& branch) { |
| 1190 | branch.resolve(fActiveStream, getTokenOffset()); |
| 1191 | } |
| 1192 | |
| 1193 | bool SkScriptEngine2::ConvertTo(SkScriptEngine2* engine, SkOperand2::OpType toType, SkScriptValue2* value ) { |
| 1194 | SkASSERT(value); |
| 1195 | SkOperand2::OpType type = value->fType; |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1196 | if (type == toType) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1197 | return true; |
| 1198 | SkOperand2& operand = value->fOperand; |
| 1199 | bool success = true; |
| 1200 | switch (toType) { |
| 1201 | case SkOperand2::kS32: |
| 1202 | if (type == SkOperand2::kScalar) |
| 1203 | operand.fS32 = SkScalarFloor(operand.fScalar); |
| 1204 | else { |
| 1205 | SkASSERT(type == SkOperand2::kString); |
| 1206 | success = SkParse::FindS32(operand.fString->c_str(), &operand.fS32) != NULL; |
| 1207 | } |
| 1208 | break; |
| 1209 | case SkOperand2::kScalar: |
| 1210 | if (type == SkOperand2::kS32) |
| 1211 | operand.fScalar = IntToScalar(operand.fS32); |
| 1212 | else { |
| 1213 | SkASSERT(type == SkOperand2::kString); |
| 1214 | success = SkParse::FindScalar(operand.fString->c_str(), &operand.fScalar) != NULL; |
| 1215 | } |
| 1216 | break; |
| 1217 | case SkOperand2::kString: { |
| 1218 | SkString* strPtr = new SkString(); |
| 1219 | SkASSERT(engine); |
| 1220 | engine->track(strPtr); |
| 1221 | if (type == SkOperand2::kS32) |
| 1222 | strPtr->appendS32(operand.fS32); |
| 1223 | else { |
| 1224 | SkASSERT(type == SkOperand2::kScalar); |
| 1225 | strPtr->appendScalar(operand.fScalar); |
| 1226 | } |
| 1227 | operand.fString = strPtr; |
| 1228 | } break; |
| 1229 | case SkOperand2::kArray: { |
| 1230 | SkOpArray* array = new SkOpArray(type); |
| 1231 | *array->append() = operand; |
| 1232 | engine->track(array); |
| 1233 | operand.fArray = array; |
| 1234 | } break; |
| 1235 | default: |
| 1236 | SkASSERT(0); |
| 1237 | } |
| 1238 | value->fType = toType; |
| 1239 | return success; |
| 1240 | } |
| 1241 | |
| 1242 | SkScalar SkScriptEngine2::IntToScalar(int32_t s32) { |
| 1243 | SkScalar scalar; |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 1244 | if (s32 == (int32_t) SK_NaN32) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1245 | scalar = SK_ScalarNaN; |
| 1246 | else if (SkAbs32(s32) == SK_MaxS32) |
| 1247 | scalar = SkSign32(s32) * SK_ScalarMax; |
| 1248 | else |
| 1249 | scalar = SkIntToScalar(s32); |
| 1250 | return scalar; |
| 1251 | } |
| 1252 | |
| 1253 | bool SkScriptEngine2::ValueToString(const SkScriptValue2& value, SkString* string) { |
| 1254 | switch (value.fType) { |
| 1255 | case SkOperand2::kS32: |
| 1256 | string->reset(); |
| 1257 | string->appendS32(value.fOperand.fS32); |
| 1258 | break; |
| 1259 | case SkOperand2::kScalar: |
| 1260 | string->reset(); |
| 1261 | string->appendScalar(value.fOperand.fScalar); |
| 1262 | break; |
| 1263 | case SkOperand2::kString: |
| 1264 | string->set(*value.fOperand.fString); |
| 1265 | break; |
| 1266 | default: |
| 1267 | SkASSERT(0); |
| 1268 | return false; |
| 1269 | } |
| 1270 | return true; // no error |
| 1271 | } |
| 1272 | |
| 1273 | #ifdef SK_DEBUG |
sugoi@google.com | 9c55f80 | 2013-03-07 20:52:59 +0000 | [diff] [blame^] | 1274 | #if defined(SK_SUPPORT_UNITTEST) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1275 | |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 1276 | #define testInt(expression) { #expression, SkOperand2::kS32, expression, 0, NULL } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1277 | #ifdef SK_SCALAR_IS_FLOAT |
bsalomon@google.com | 100abf4 | 2012-09-05 17:40:04 +0000 | [diff] [blame] | 1278 | #define testScalar(expression) { #expression, SkOperand2::kScalar, 0, (float) (expression), NULL } |
| 1279 | #define testRemainder(exp1, exp2) { #exp1 "%" #exp2, SkOperand2::kScalar, 0, fmodf((float) exp1, (float) exp2), NULL } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1280 | #else |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 1281 | #define testScalar(expression) { #expression, SkOperand2::kScalar, 0, (int) ((expression) * 65536.0f), NULL } |
| 1282 | #define testRemainder(exp1, exp2) { #exp1 "%" #exp2, SkOperand2::kScalar, 0, (int) (fmod(exp1, exp2) * 65536.0f), NULL } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1283 | #endif |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 1284 | #define testTrue(expression) { #expression, SkOperand2::kS32, 1, 0, NULL } |
| 1285 | #define testFalse(expression) { #expression, SkOperand2::kS32, 0, 0, NULL } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1286 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1287 | static const SkScriptNAnswer2 scriptTests[] = { |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 1288 | testInt(1||(0&&3)), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1289 | testScalar(- -5.5- -1.5), |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1290 | testScalar(1.0+5), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1291 | testInt((6+7)*8), |
| 1292 | testInt(3*(4+5)), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1293 | testScalar(1.0+2.0), |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 1294 | testScalar(3.0-1.0), |
| 1295 | testScalar(6-1.0), |
| 1296 | testScalar(2.5*6.), |
| 1297 | testScalar(0.5*4), |
| 1298 | testScalar(4.5/.5), |
| 1299 | testScalar(9.5/19), |
| 1300 | testRemainder(9.5, 0.5), |
| 1301 | testRemainder(9.,2), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1302 | testRemainder(9,2.5), |
| 1303 | testRemainder(-9,2.5), |
| 1304 | testTrue(-9==-9.0), |
| 1305 | testTrue(-9.==-4.0-5), |
| 1306 | testTrue(-9.*1==-4-5), |
| 1307 | testFalse(-9!=-9.0), |
| 1308 | testFalse(-9.!=-4.0-5), |
| 1309 | testFalse(-9.*1!=-4-5), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1310 | testInt(0x123), |
| 1311 | testInt(0XABC), |
| 1312 | testInt(0xdeadBEEF), |
| 1313 | { "'123'+\"456\"", SkOperand2::kString, 0, 0, "123456" }, |
| 1314 | { "123+\"456\"", SkOperand2::kString, 0, 0, "123456" }, |
| 1315 | { "'123'+456", SkOperand2::kString, 0, 0, "123456" }, |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 1316 | { "'123'|\"456\"", SkOperand2::kS32, 123|456, 0, NULL }, |
| 1317 | { "123|\"456\"", SkOperand2::kS32, 123|456, 0, NULL }, |
| 1318 | { "'123'|456", SkOperand2::kS32, 123|456, 0, NULL }, |
| 1319 | { "'2'<11", SkOperand2::kS32, 1, 0, NULL }, |
| 1320 | { "2<'11'", SkOperand2::kS32, 1, 0, NULL }, |
| 1321 | { "'2'<'11'", SkOperand2::kS32, 0, 0, NULL }, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1322 | testInt(123), |
| 1323 | testInt(-345), |
| 1324 | testInt(+678), |
| 1325 | testInt(1+2+3), |
| 1326 | testInt(3*4+5), |
| 1327 | testInt(6+7*8), |
| 1328 | testInt(-1-2-8/4), |
| 1329 | testInt(-9%4), |
| 1330 | testInt(9%-4), |
| 1331 | testInt(-9%-4), |
| 1332 | testInt(123|978), |
| 1333 | testInt(123&978), |
| 1334 | testInt(123^978), |
| 1335 | testInt(2<<4), |
| 1336 | testInt(99>>3), |
| 1337 | testInt(~55), |
| 1338 | testInt(~~55), |
| 1339 | testInt(!55), |
| 1340 | testInt(!!55), |
| 1341 | // both int |
| 1342 | testInt(2<2), |
| 1343 | testInt(2<11), |
| 1344 | testInt(20<11), |
| 1345 | testInt(2<=2), |
| 1346 | testInt(2<=11), |
| 1347 | testInt(20<=11), |
| 1348 | testInt(2>2), |
| 1349 | testInt(2>11), |
| 1350 | testInt(20>11), |
| 1351 | testInt(2>=2), |
| 1352 | testInt(2>=11), |
| 1353 | testInt(20>=11), |
| 1354 | testInt(2==2), |
| 1355 | testInt(2==11), |
| 1356 | testInt(20==11), |
| 1357 | testInt(2!=2), |
| 1358 | testInt(2!=11), |
| 1359 | testInt(20!=11), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1360 | // left int, right scalar |
| 1361 | testInt(2<2.), |
| 1362 | testInt(2<11.), |
| 1363 | testInt(20<11.), |
| 1364 | testInt(2<=2.), |
| 1365 | testInt(2<=11.), |
| 1366 | testInt(20<=11.), |
| 1367 | testInt(2>2.), |
| 1368 | testInt(2>11.), |
| 1369 | testInt(20>11.), |
| 1370 | testInt(2>=2.), |
| 1371 | testInt(2>=11.), |
| 1372 | testInt(20>=11.), |
| 1373 | testInt(2==2.), |
| 1374 | testInt(2==11.), |
| 1375 | testInt(20==11.), |
| 1376 | testInt(2!=2.), |
| 1377 | testInt(2!=11.), |
| 1378 | testInt(20!=11.), |
| 1379 | // left scalar, right int |
| 1380 | testInt(2.<2), |
| 1381 | testInt(2.<11), |
| 1382 | testInt(20.<11), |
| 1383 | testInt(2.<=2), |
| 1384 | testInt(2.<=11), |
| 1385 | testInt(20.<=11), |
| 1386 | testInt(2.>2), |
| 1387 | testInt(2.>11), |
| 1388 | testInt(20.>11), |
| 1389 | testInt(2.>=2), |
| 1390 | testInt(2.>=11), |
| 1391 | testInt(20.>=11), |
| 1392 | testInt(2.==2), |
| 1393 | testInt(2.==11), |
| 1394 | testInt(20.==11), |
| 1395 | testInt(2.!=2), |
| 1396 | testInt(2.!=11), |
| 1397 | testInt(20.!=11), |
| 1398 | // both scalar |
| 1399 | testInt(2.<11.), |
| 1400 | testInt(20.<11.), |
| 1401 | testInt(2.<=2.), |
| 1402 | testInt(2.<=11.), |
| 1403 | testInt(20.<=11.), |
| 1404 | testInt(2.>2.), |
| 1405 | testInt(2.>11.), |
| 1406 | testInt(20.>11.), |
| 1407 | testInt(2.>=2.), |
| 1408 | testInt(2.>=11.), |
| 1409 | testInt(20.>=11.), |
| 1410 | testInt(2.==2.), |
| 1411 | testInt(2.==11.), |
| 1412 | testInt(20.==11.), |
| 1413 | testInt(2.!=2.), |
| 1414 | testInt(2.!=11.), |
| 1415 | testInt(20.!=11.), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1416 | // int, string (string is int) |
| 1417 | testFalse(2<'2'), |
| 1418 | testTrue(2<'11'), |
| 1419 | testFalse(20<'11'), |
| 1420 | testTrue(2<='2'), |
| 1421 | testTrue(2<='11'), |
| 1422 | testFalse(20<='11'), |
| 1423 | testFalse(2>'2'), |
| 1424 | testFalse(2>'11'), |
| 1425 | testTrue(20>'11'), |
| 1426 | testTrue(2>='2'), |
| 1427 | testFalse(2>='11'), |
| 1428 | testTrue(20>='11'), |
| 1429 | testTrue(2=='2'), |
| 1430 | testFalse(2=='11'), |
| 1431 | testFalse(2!='2'), |
| 1432 | testTrue(2!='11'), |
| 1433 | // int, string (string is scalar) |
| 1434 | testFalse(2<'2.'), |
| 1435 | testTrue(2<'11.'), |
| 1436 | testFalse(20<'11.'), |
| 1437 | testTrue(2=='2.'), |
| 1438 | testFalse(2=='11.'), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1439 | // scalar, string |
| 1440 | testFalse(2.<'2.'), |
| 1441 | testTrue(2.<'11.'), |
| 1442 | testFalse(20.<'11.'), |
| 1443 | testTrue(2.=='2.'), |
| 1444 | testFalse(2.=='11.'), |
| 1445 | // string, int |
| 1446 | testFalse('2'<2), |
| 1447 | testTrue('2'<11), |
| 1448 | testFalse('20'<11), |
| 1449 | testTrue('2'==2), |
| 1450 | testFalse('2'==11), |
| 1451 | // string, scalar |
| 1452 | testFalse('2'<2.), |
| 1453 | testTrue('2'<11.), |
| 1454 | testFalse('20'<11.), |
| 1455 | testTrue('2'==2.), |
| 1456 | testFalse('2'==11.), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1457 | // string, string |
| 1458 | testFalse('2'<'2'), |
| 1459 | testFalse('2'<'11'), |
| 1460 | testFalse('20'<'11'), |
| 1461 | testTrue('2'=='2'), |
| 1462 | testFalse('2'=='11'), |
| 1463 | // logic |
| 1464 | testInt(1?2:3), |
| 1465 | testInt(0?2:3), |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 1466 | testInt((1&&2)||3), |
| 1467 | testInt((1&&0)||3), |
| 1468 | testInt((1&&0)||0), |
| 1469 | testInt(1||(0&&3)), |
| 1470 | testInt(0||(0&&3)), |
| 1471 | testInt(0||(1&&3)), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1472 | testInt(0&&1?2:3) |
senorblanco@chromium.org | 64cc579 | 2011-05-19 19:58:58 +0000 | [diff] [blame] | 1473 | , { "123.5", SkOperand2::kScalar, 0, SkIntToScalar(123) + SK_Scalar1/2, NULL } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1474 | }; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1475 | |
| 1476 | #define SkScriptNAnswer_testCount SK_ARRAY_COUNT(scriptTests) |
sugoi@google.com | 9c55f80 | 2013-03-07 20:52:59 +0000 | [diff] [blame^] | 1477 | #endif // SK_SUPPORT_UNITTEST |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1478 | |
| 1479 | void SkScriptEngine2::UnitTest() { |
reed@android.com | ec10d21 | 2010-01-12 22:58:35 +0000 | [diff] [blame] | 1480 | #if defined(SK_SUPPORT_UNITTEST) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1481 | ValidateDecompileTable(); |
| 1482 | for (int index = 0; index < SkScriptNAnswer_testCount; index++) { |
| 1483 | SkScriptEngine2 engine(scriptTests[index].fType); |
| 1484 | SkScriptValue2 value; |
| 1485 | const char* script = scriptTests[index].fScript; |
| 1486 | const char* scriptPtr = script; |
| 1487 | SkASSERT(engine.evaluateScript(&scriptPtr, &value) == true); |
| 1488 | SkASSERT(value.fType == scriptTests[index].fType); |
| 1489 | SkScalar error; |
| 1490 | switch (value.fType) { |
| 1491 | case SkOperand2::kS32: |
| 1492 | if (value.fOperand.fS32 != scriptTests[index].fIntAnswer) |
| 1493 | SkDEBUGF(("script '%s' == value %d != expected answer %d\n", script, value.fOperand.fS32, scriptTests[index].fIntAnswer)); |
| 1494 | SkASSERT(value.fOperand.fS32 == scriptTests[index].fIntAnswer); |
| 1495 | break; |
| 1496 | case SkOperand2::kScalar: |
| 1497 | error = SkScalarAbs(value.fOperand.fScalar - scriptTests[index].fScalarAnswer); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1498 | if (error >= SK_Scalar1 / 10000) |
| 1499 | SkDEBUGF(("script '%s' == value %g != expected answer %g\n", script, value.fOperand.fScalar / (1.0f * SK_Scalar1), scriptTests[index].fScalarAnswer / (1.0f * SK_Scalar1))); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1500 | SkASSERT(error < SK_Scalar1 / 10000); |
| 1501 | break; |
| 1502 | case SkOperand2::kString: |
| 1503 | SkASSERT(value.fOperand.fString->equals(scriptTests[index].fStringAnswer)); |
| 1504 | break; |
| 1505 | default: |
| 1506 | SkASSERT(0); |
| 1507 | } |
| 1508 | } |
sugoi@google.com | 9c55f80 | 2013-03-07 20:52:59 +0000 | [diff] [blame^] | 1509 | #endif // SK_SUPPORT_UNITTEST |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1510 | } |
sugoi@google.com | 9c55f80 | 2013-03-07 20:52:59 +0000 | [diff] [blame^] | 1511 | #endif // SK_DEBUG |
| 1512 | |