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gfx/skia/trunk/src/animator/SkScript2.h@129ffea94266 (annotated)

gfx/skia/trunk/src/animator/SkScript2.h

Sat, 03 Jan 2015 20:18:00 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Sat, 03 Jan 2015 20:18:00 +0100
branch
TOR_BUG_3246
changeset 7
129ffea94266
permissions
-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

michael@0 1
michael@0 2 /*
michael@0 3 * Copyright 2011 Google Inc.
michael@0 4 *
michael@0 5 * Use of this source code is governed by a BSD-style license that can be
michael@0 6 * found in the LICENSE file.
michael@0 7 */
michael@0 8 #ifndef SkScript2_DEFINED
michael@0 9 #define SkScript2_DEFINED
michael@0 10
michael@0 11 #include "SkOperand2.h"
michael@0 12 #include "SkStream.h"
michael@0 13 #include "SkTDArray.h"
michael@0 14 #include "SkTDArray_Experimental.h"
michael@0 15 #include "SkTDict.h"
michael@0 16 #include "SkTDStack.h"
michael@0 17
michael@0 18 typedef SkLongArray(SkString*) SkTDStringArray;
michael@0 19
michael@0 20 class SkAnimateMaker;
michael@0 21 class SkScriptCallBack;
michael@0 22
michael@0 23 class SkScriptEngine2 {
michael@0 24 public:
michael@0 25 enum Error {
michael@0 26 kNoError,
michael@0 27 kArrayIndexOutOfBounds,
michael@0 28 kCouldNotFindReferencedID,
michael@0 29 kFunctionCallFailed,
michael@0 30 kMemberOpFailed,
michael@0 31 kPropertyOpFailed
michael@0 32 };
michael@0 33
michael@0 34 enum Attrs {
michael@0 35 kConstant,
michael@0 36 kVariable
michael@0 37 };
michael@0 38
michael@0 39 SkScriptEngine2(SkOperand2::OpType returnType);
michael@0 40 ~SkScriptEngine2();
michael@0 41 bool convertTo(SkOperand2::OpType , SkScriptValue2* );
michael@0 42 bool evaluateScript(const char** script, SkScriptValue2* value);
michael@0 43 void forget(SkOpArray* array);
michael@0 44 Error getError() { return fError; }
michael@0 45 SkOperand2::OpType getReturnType() { return fReturnType; }
michael@0 46 void track(SkOpArray* array) {
michael@0 47 SkASSERT(fTrackArray.find(array) < 0);
michael@0 48 *fTrackArray.append() = array; }
michael@0 49 void track(SkString* string) {
michael@0 50 SkASSERT(fTrackString.find(string) < 0);
michael@0 51 *fTrackString.append() = string;
michael@0 52 }
michael@0 53 static bool ConvertTo(SkScriptEngine2* , SkOperand2::OpType toType, SkScriptValue2* value);
michael@0 54 static SkScalar IntToScalar(int32_t );
michael@0 55 static bool ValueToString(const SkScriptValue2& value, SkString* string);
michael@0 56
michael@0 57 enum Op { // used by tokenizer attribute table
michael@0 58 kUnassigned,
michael@0 59 kAdd,
michael@0 60 kBitAnd,
michael@0 61 kBitNot,
michael@0 62 kBitOr,
michael@0 63 kDivide,
michael@0 64 kEqual,
michael@0 65 kFlipOps,
michael@0 66 kGreaterEqual,
michael@0 67 kLogicalAnd,
michael@0 68 kLogicalNot,
michael@0 69 kLogicalOr,
michael@0 70 kMinus,
michael@0 71 kModulo,
michael@0 72 kMultiply,
michael@0 73 kShiftLeft,
michael@0 74 kShiftRight, // signed
michael@0 75 kSubtract,
michael@0 76 kXor,
michael@0 77 // following not in attribute table
michael@0 78 kArrayOp,
michael@0 79 kElse,
michael@0 80 kIf,
michael@0 81 kParen,
michael@0 82 kLastLogicalOp,
michael@0 83 kArtificialOp = 0x20
michael@0 84 };
michael@0 85
michael@0 86 enum TypeOp { // generated by tokenizer
michael@0 87 kNop, // should never get generated
michael@0 88 kAccumulatorPop,
michael@0 89 kAccumulatorPush,
michael@0 90 kAddInt,
michael@0 91 kAddScalar,
michael@0 92 kAddString, // string concat
michael@0 93 kArrayIndex,
michael@0 94 kArrayParam,
michael@0 95 kArrayToken,
michael@0 96 kBitAndInt,
michael@0 97 kBitNotInt,
michael@0 98 kBitOrInt,
michael@0 99 kBoxToken,
michael@0 100 kCallback,
michael@0 101 kDivideInt,
michael@0 102 kDivideScalar,
michael@0 103 kDotOperator,
michael@0 104 kElseOp,
michael@0 105 kEnd,
michael@0 106 kEqualInt,
michael@0 107 kEqualScalar,
michael@0 108 kEqualString,
michael@0 109 kFunctionCall,
michael@0 110 kFlipOpsOp,
michael@0 111 kFunctionToken,
michael@0 112 kGreaterEqualInt,
michael@0 113 kGreaterEqualScalar,
michael@0 114 kGreaterEqualString,
michael@0 115 kIfOp,
michael@0 116 kIntToScalar,
michael@0 117 kIntToScalar2,
michael@0 118 kIntToString,
michael@0 119 kIntToString2,
michael@0 120 kIntegerAccumulator,
michael@0 121 kIntegerOperand,
michael@0 122 kLogicalAndInt,
michael@0 123 kLogicalNotInt,
michael@0 124 kLogicalOrInt,
michael@0 125 kMemberOp,
michael@0 126 kMinusInt,
michael@0 127 kMinusScalar,
michael@0 128 kModuloInt,
michael@0 129 kModuloScalar,
michael@0 130 kMultiplyInt,
michael@0 131 kMultiplyScalar,
michael@0 132 kPropertyOp,
michael@0 133 kScalarAccumulator,
michael@0 134 kScalarOperand,
michael@0 135 kScalarToInt,
michael@0 136 kScalarToInt2,
michael@0 137 kScalarToString,
michael@0 138 kScalarToString2,
michael@0 139 kShiftLeftInt,
michael@0 140 kShiftRightInt, // signed
michael@0 141 kStringAccumulator,
michael@0 142 kStringOperand,
michael@0 143 kStringToInt,
michael@0 144 kStringToScalar,
michael@0 145 kStringToScalar2,
michael@0 146 kStringTrack,
michael@0 147 kSubtractInt,
michael@0 148 kSubtractScalar,
michael@0 149 kToBool,
michael@0 150 kUnboxToken,
michael@0 151 kUnboxToken2,
michael@0 152 kXorInt,
michael@0 153 kLastTypeOp
michael@0 154 };
michael@0 155
michael@0 156 enum OpBias {
michael@0 157 kNoBias,
michael@0 158 kTowardsNumber = 0,
michael@0 159 kTowardsString
michael@0 160 };
michael@0 161
michael@0 162 protected:
michael@0 163
michael@0 164 enum BraceStyle {
michael@0 165 // kStructBrace,
michael@0 166 kArrayBrace,
michael@0 167 kFunctionBrace
michael@0 168 };
michael@0 169
michael@0 170 enum AddTokenRegister {
michael@0 171 kAccumulator,
michael@0 172 kOperand
michael@0 173 };
michael@0 174
michael@0 175 enum ResultIsBoolean {
michael@0 176 kResultIsNotBoolean,
michael@0 177 kResultIsBoolean
michael@0 178 };
michael@0 179
michael@0 180 struct OperatorAttributes {
michael@0 181 unsigned int fLeftType : 3; // SkOpType union, but only lower values
michael@0 182 unsigned int fRightType : 3; // SkOpType union, but only lower values
michael@0 183 OpBias fBias : 1;
michael@0 184 ResultIsBoolean fResultIsBoolean : 1;
michael@0 185 };
michael@0 186
michael@0 187 struct Branch {
michael@0 188 Branch() {
michael@0 189 }
michael@0 190
michael@0 191 Branch(Op op, int depth, unsigned offset) : fOffset(offset), fOpStackDepth(depth), fOperator(op),
michael@0 192 fPrimed(kIsNotPrimed), fDone(kIsNotDone) {
michael@0 193 }
michael@0 194
michael@0 195 enum Primed {
michael@0 196 kIsNotPrimed,
michael@0 197 kIsPrimed
michael@0 198 };
michael@0 199
michael@0 200 enum Done {
michael@0 201 kIsNotDone,
michael@0 202 kIsDone,
michael@0 203 };
michael@0 204
michael@0 205 unsigned fOffset : 16; // offset in generated stream where branch needs to go
michael@0 206 int fOpStackDepth : 7; // depth when operator was found
michael@0 207 Op fOperator : 6; // operand which generated branch
michael@0 208 mutable Primed fPrimed : 1; // mark when next instruction generates branch
michael@0 209 Done fDone : 1; // mark when branch is complete
michael@0 210 void prime() { fPrimed = kIsPrimed; }
michael@0 211 void resolve(SkDynamicMemoryWStream* , size_t offset);
michael@0 212 };
michael@0 213
michael@0 214 static const OperatorAttributes gOpAttributes[];
michael@0 215 static const signed char gPrecedence[];
michael@0 216 static const TypeOp gTokens[];
michael@0 217 void addToken(TypeOp );
michael@0 218 void addTokenConst(SkScriptValue2* , AddTokenRegister , SkOperand2::OpType , TypeOp );
michael@0 219 void addTokenInt(int );
michael@0 220 void addTokenScalar(SkScalar );
michael@0 221 void addTokenString(const SkString& );
michael@0 222 void addTokenValue(const SkScriptValue2& , AddTokenRegister );
michael@0 223 int arithmeticOp(char ch, char nextChar, bool lastPush);
michael@0 224 bool convertParams(SkTDArray<SkScriptValue2>* ,
michael@0 225 const SkOperand2::OpType* paramTypes, int paramTypeCount);
michael@0 226 void convertToString(SkOperand2* operand, SkOperand2::OpType type) {
michael@0 227 SkScriptValue2 scriptValue;
michael@0 228 scriptValue.fOperand = *operand;
michael@0 229 scriptValue.fType = type;
michael@0 230 convertTo(SkOperand2::kString, &scriptValue);
michael@0 231 *operand = scriptValue.fOperand;
michael@0 232 }
michael@0 233 bool evaluateDot(const char*& script);
michael@0 234 bool evaluateDotParam(const char*& script, const char* field, size_t fieldLength);
michael@0 235 bool functionParams(const char** scriptPtr, SkTDArray<SkScriptValue2>* params);
michael@0 236 size_t getTokenOffset();
michael@0 237 SkOperand2::OpType getUnboxType(SkOperand2 scriptValue);
michael@0 238 bool handleArrayIndexer(const char** scriptPtr);
michael@0 239 bool handleFunction(const char** scriptPtr);
michael@0 240 bool handleMember(const char* field, size_t len, void* object);
michael@0 241 bool handleMemberFunction(const char* field, size_t len, void* object,
michael@0 242 SkTDArray<SkScriptValue2>* params);
michael@0 243 bool handleProperty();
michael@0 244 bool handleUnbox(SkScriptValue2* scriptValue);
michael@0 245 bool innerScript(const char** scriptPtr, SkScriptValue2* value);
michael@0 246 int logicalOp(char ch, char nextChar);
michael@0 247 void processLogicalOp(Op op);
michael@0 248 bool processOp();
michael@0 249 void resolveBranch(Branch& );
michael@0 250 // void setAnimateMaker(SkAnimateMaker* maker) { fMaker = maker; }
michael@0 251 SkDynamicMemoryWStream fStream;
michael@0 252 SkDynamicMemoryWStream* fActiveStream;
michael@0 253 SkTDStack<BraceStyle> fBraceStack; // curly, square, function paren
michael@0 254 SkTDStack<Branch> fBranchStack; // logical operators, slot to store forward branch
michael@0 255 SkLongArray(SkScriptCallBack*) fCallBackArray;
michael@0 256 SkTDStack<Op> fOpStack;
michael@0 257 SkTDStack<SkScriptValue2> fValueStack;
michael@0 258 // SkAnimateMaker* fMaker;
michael@0 259 SkLongArray(SkOpArray*) fTrackArray;
michael@0 260 SkTDStringArray fTrackString;
michael@0 261 const char* fToken; // one-deep stack
michael@0 262 size_t fTokenLength;
michael@0 263 SkOperand2::OpType fReturnType;
michael@0 264 Error fError;
michael@0 265 SkOperand2::OpType fAccumulatorType; // tracking for code generation
michael@0 266 SkBool fBranchPopAllowed;
michael@0 267 SkBool fConstExpression;
michael@0 268 SkBool fOperandInUse;
michael@0 269 private:
michael@0 270 #ifdef SK_DEBUG
michael@0 271 public:
michael@0 272 void decompile(const unsigned char* , size_t );
michael@0 273 static void UnitTest();
michael@0 274 static void ValidateDecompileTable();
michael@0 275 #endif
michael@0 276 };
michael@0 277
michael@0 278 #ifdef SK_DEBUG
michael@0 279
michael@0 280 struct SkScriptNAnswer2 {
michael@0 281 const char* fScript;
michael@0 282 SkOperand2::OpType fType;
michael@0 283 int32_t fIntAnswer;
michael@0 284 SkScalar fScalarAnswer;
michael@0 285 const char* fStringAnswer;
michael@0 286 };
michael@0 287
michael@0 288 #endif
michael@0 289
michael@0 290
michael@0 291 #endif // SkScript2_DEFINED

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