grab from latest android

git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 607 insertions, 0 deletions

diff --git a/src/animator/SkAnimatorScript.cpp b/src/animator/SkAnimatorScript.cpp
new file mode 100644
index 0000000000..eafe1dbf59
--- /dev/null
+++ b/src/animator/SkAnimatorScript.cpp
@@ -0,0 +1,607 @@
+/* libs/graphics/animator/SkAnimatorScript.cpp
+**
+** Copyright 2006, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+
+#include "SkAnimatorScript.h"
+#include "SkAnimateBase.h"
+#include "SkAnimateMaker.h"
+#include "SkDisplayTypes.h"
+#include "SkExtras.h"
+#include "SkMemberInfo.h"
+#include "SkParse.h"
+
+static const SkDisplayEnumMap gEnumMaps[] = {
+    { SkType_AddMode, "indirect|immediate" },
+    { SkType_Align, "left|center|right" },
+    { SkType_ApplyMode, "create|immediate|once" },
+    { SkType_ApplyTransition, "normal|reverse" },
+    { SkType_BitmapEncoding, "jpeg|png" },
+    { SkType_BitmapFormat, "none|A1|A8|Index8|RGB16|RGB32" },
+    { SkType_Boolean, "false|true" },
+    { SkType_Cap, "butt|round|square" },
+    { SkType_EventCode, "none|leftSoftKey|rightSoftKey|home|back|send|end|key0|key1|key2|key3|key4|key5|key6|key7|key8|key9|star|hash|up|down|left|right|OK|volUp|volDown|camera" },
+    { SkType_EventKind, "none|keyChar|keyPress|keyPressUp|mouseDown|mouseDrag|mouseMove|mouseUp|onEnd|onLoad|user" },
+    { SkType_EventMode, "deferred|immediate" },
+    { SkType_FillType, "winding|evenOdd" },
+    { SkType_FilterType, "none|bilinear" },
+    { SkType_FontStyle, "normal|bold|italic|boldItalic" },
+    { SkType_FromPathMode, "normal|angle|position" },
+    { SkType_Join, "miter|round|blunt" },
+    { SkType_MaskFilterBlurStyle, "normal|solid|outer|inner" },
+    { SkType_PathDirection, "cw|ccw" },
+    { SkType_Style, "fill|stroke|strokeAndFill" },
+    { SkType_TextBoxAlign, "start|center|end" },
+    { SkType_TextBoxMode, "oneLine|lineBreak" },
+    { SkType_TileMode, "clamp|repeat|mirror" },
+    { SkType_Xfermode, "clear|src|dst|srcOver|dstOver|srcIn|dstIn|srcOut|dstOut|"
+        "srcATop|dstATop|xor|darken|lighten" },
+};
+
+static int gEnumMapCount = SK_ARRAY_COUNT(gEnumMaps);
+
+SkAnimatorScript::SkAnimatorScript(SkAnimateMaker& maker, SkDisplayable* working, SkDisplayTypes type)
+    : SkScriptEngine(SkScriptEngine::ToOpType(type)), fMaker(maker), fParent(NULL), fWorking(working)
+{
+    memberCallBack(EvalMember, (void*) this);
+    memberFunctionCallBack(EvalMemberFunction, (void*) this);
+    boxCallBack(Box, (void*) this);
+    unboxCallBack(Unbox, (void*) &maker);
+    propertyCallBack(EvalID, (void*) this); // must be first (entries are prepended, will be last), since it never fails
+    propertyCallBack(Infinity, (void*) this);
+    propertyCallBack(NaN, (void*) this);
+    functionCallBack(Eval, (void*) this);
+    functionCallBack(IsFinite, (void*) this);
+    functionCallBack(IsNaN, (void*) this);
+    if (type == SkType_ARGB) {
+        functionCallBack(EvalRGB, (void*) this);
+        propertyCallBack(EvalNamedColor, (void*) &maker.fIDs);
+    }
+    if (SkDisplayType::IsEnum(&maker, type)) {
+        // !!! for SpiderMonkey, iterate through the enum values, and map them to globals
+        const SkDisplayEnumMap& map = GetEnumValues(type);
+        propertyCallBack(EvalEnum, (void*) map.fValues); 
+    } 
+    for (SkExtras** extraPtr = maker.fExtras.begin(); extraPtr < maker.fExtras.end(); extraPtr++) {
+        SkExtras* extra = *extraPtr;
+        if (extra->fExtraCallBack)
+            propertyCallBack(extra->fExtraCallBack, extra->fExtraStorage);
+    }
+}
+
+SkAnimatorScript::~SkAnimatorScript() {
+    for (SkDisplayable** dispPtr = fTrackDisplayable.begin(); dispPtr < fTrackDisplayable.end(); dispPtr++)
+        delete *dispPtr;
+}
+
+bool SkAnimatorScript::evaluate(const char* original, SkScriptValue* result, SkDisplayTypes type) {
+        const char* script = original;
+        bool success = evaluateScript(&script, result);
+        if (success == false || result->fType != type) {
+            fMaker.setScriptError(*this);
+            return false;
+        }
+        return true;
+}
+
+bool SkAnimatorScript::Box(void* user, SkScriptValue* scriptValue) {
+    SkAnimatorScript* engine = (SkAnimatorScript*) user;
+    SkDisplayTypes type = scriptValue->fType;
+    SkDisplayable* displayable;
+    switch (type) {
+        case SkType_Array: {
+            SkDisplayArray* boxedValue = new SkDisplayArray(*scriptValue->fOperand.fArray);
+            displayable = boxedValue;
+            } break;
+        case SkType_Boolean: {
+            SkDisplayBoolean* boxedValue = new SkDisplayBoolean;
+            displayable = boxedValue;
+            boxedValue->value = !! scriptValue->fOperand.fS32;
+            } break;
+        case SkType_Int: {
+            SkDisplayInt* boxedValue = new SkDisplayInt;
+            displayable = boxedValue;
+            boxedValue->value = scriptValue->fOperand.fS32;
+            } break;
+        case SkType_Float: {
+            SkDisplayFloat* boxedValue = new SkDisplayFloat;
+            displayable = boxedValue;
+            boxedValue->value = scriptValue->fOperand.fScalar;
+            } break;
+        case SkType_String: {
+            SkDisplayString* boxedValue = new SkDisplayString(*scriptValue->fOperand.fString);
+            displayable = boxedValue;
+            } break;
+        case SkType_Displayable: 
+            scriptValue->fOperand.fObject = scriptValue->fOperand.fDisplayable;
+            scriptValue->fType = SkType_Displayable;
+            return true;
+        default:
+            SkASSERT(0);
+            return false;
+    }
+    engine->track(displayable);
+    scriptValue->fOperand.fObject = displayable;
+    scriptValue->fType = SkType_Displayable;
+    return true;
+}
+
+bool SkAnimatorScript::Eval(const char* function, size_t len, SkTDArray<SkScriptValue>& params, 
+        void* eng, SkScriptValue* value) {
+    if (SK_LITERAL_STR_EQUAL("eval", function, len) == false)
+        return false;
+    if (params.count() != 1)
+        return false;
+    SkAnimatorScript* host = (SkAnimatorScript*) eng;
+    SkAnimatorScript engine(host->fMaker, host->fWorking, SkScriptEngine::ToDisplayType(host->fReturnType));
+    SkScriptValue* scriptValue = params.begin();
+    bool success = true;
+    if (scriptValue->fType == SkType_String) {
+        const char* script = scriptValue->fOperand.fString->c_str();
+        success = engine.evaluateScript(&script, value);
+    } else
+        *value = *scriptValue;
+    return success;
+}
+
+bool SkAnimatorScript::EvalEnum(const char* token, size_t len, void* callBack, SkScriptValue* value) {
+    const char* tokens = (const char*) callBack;
+    value->fType = SkType_Int;
+    if (MapEnums(tokens, token, len, (int*)&value->fOperand.fS32))
+        return true; 
+    return false;
+}
+
+bool SkAnimatorScript::EvalID(const char* token, size_t len, void* user, SkScriptValue* value) {
+    SkAnimatorScript* engine = (SkAnimatorScript*) user;
+    SkTDict<SkDisplayable*>* ids = &engine->fMaker.fIDs;
+    SkDisplayable* displayable;
+    bool success = ids->find(token, len, &displayable); 
+    if (success == false) {
+        displayable = engine->fWorking;
+        if (SK_LITERAL_STR_EQUAL("parent", token, len)) {
+            SkDisplayable* parent = displayable->getParent();
+            if (parent == false)
+                parent = engine->fParent;
+            if (parent) {
+                value->fOperand.fDisplayable = parent;
+                value->fType = SkType_Displayable;
+                return true;
+            }
+        }
+        if (displayable && EvalMember(token, len, displayable, engine, value))
+            return true;
+        value->fOperand.fString = NULL;
+        value->fType = SkType_String;   
+    } else {
+        SkDisplayable* working = engine->fWorking;
+        value->fOperand.fDisplayable = displayable;
+        value->fType = SkType_Displayable;
+        if (displayable->canContainDependents() && working && working->isAnimate()) {
+            SkAnimateBase* animator = (SkAnimateBase*) working;
+            if (animator->isDynamic()) {
+                SkDisplayDepend* depend = (SkDisplayDepend* ) displayable;
+                depend->addDependent(working);
+            }
+        }
+    }
+    return true;
+}
+
+bool SkAnimatorScript::EvalNamedColor(const char* token, size_t len, void* callback, SkScriptValue* value) {
+        value->fType = SkType_Int;
+    if (SkParse::FindNamedColor(token, len, (SkColor*) &value->fOperand.fS32) != NULL)
+        return true;
+    return false;
+}
+
+bool SkAnimatorScript::EvalRGB(const char* function, size_t len, SkTDArray<SkScriptValue>& params, 
+        void* eng, SkScriptValue* value) {
+    if (SK_LITERAL_STR_EQUAL("rgb", function, len) == false)
+        return false;
+    if (params.count() != 3)
+        return false;
+    SkScriptEngine* engine = (SkScriptEngine*) eng;
+    unsigned result = 0xFF000000;
+    int shift = 16;
+    for (SkScriptValue* valuePtr = params.begin(); valuePtr < params.end(); valuePtr++) {
+        engine->convertTo(SkType_Int, valuePtr);
+        result |= SkClampMax(valuePtr->fOperand.fS32, 255) << shift;
+        shift -= 8;
+    }
+    value->fOperand.fS32 = result;
+    value->fType = SkType_Int;
+    return true;
+}
+
+bool SkAnimatorScript::EvalMemberCommon(SkScriptEngine* engine, const SkMemberInfo* info, 
+        SkDisplayable* displayable, SkScriptValue* value) {
+    SkDisplayTypes original;
+    SkDisplayTypes type = original = (SkDisplayTypes) info->getType();
+    if (info->fType == SkType_Array)
+        type = SkType_Array;
+    switch (type) {
+        case SkType_ARGB:
+            type = SkType_Int;
+        case SkType_Boolean:
+        case SkType_Int:
+        case SkType_MSec:
+        case SkType_Float:
+            SkASSERT(info->getCount() == 1);
+            if (info->fType != SkType_MemberProperty && info->fType != SkType_MemberFunction) 
+                value->fOperand.fS32 = *(int32_t*) info->memberData(displayable);   // OK for SkScalar too
+            if (type == SkType_MSec) {
+                value->fOperand.fScalar = SkScalarDiv((SkScalar) value->fOperand.fS32, 1000); // dividing two ints is the same as dividing two scalars 
+                type = SkType_Float;
+            }
+            break;
+        case SkType_String: {
+            SkString* displayableString;
+            if (info->fType != SkType_MemberProperty && info->fType != SkType_MemberFunction) {
+                info->getString(displayable, &displayableString);
+                value->fOperand.fString = new SkString(*displayableString);
+            }
+            } break;
+        case SkType_Array: {
+            SkASSERT(info->fType != SkType_MemberProperty); // !!! incomplete
+            SkTDOperandArray* displayableArray = (SkTDOperandArray*) info->memberData(displayable);
+            if (displayable->getType() == SkType_Array) {
+                SkDisplayArray* typedArray = (SkDisplayArray*) displayable;
+                original = typedArray->values.getType();
+            }
+            SkASSERT(original != SkType_Unknown);
+            SkTypedArray* array = value->fOperand.fArray = new SkTypedArray(original);
+            engine->track(array);
+            int count = displayableArray->count();
+            if (count > 0) {
+                array->setCount(count);
+                memcpy(array->begin(), displayableArray->begin(), count * sizeof(SkOperand));
+            }
+            } break;
+        default:
+            SkASSERT(0); // unimplemented
+    }
+    value->fType = type;
+    return true;
+}
+
+bool SkAnimatorScript::EvalMember(const char* member, size_t len, void* object, void* eng, 
+        SkScriptValue* value) {
+    SkScriptEngine* engine = (SkScriptEngine*) eng;
+    SkDisplayable* displayable = (SkDisplayable*) object;
+    SkString name(member, len);
+    SkDisplayable* named = displayable->contains(name);
+    if (named) {
+        value->fOperand.fDisplayable = named;
+        value->fType = SkType_Displayable;
+        return true;
+    }
+    const SkMemberInfo* info = displayable->getMember(name.c_str());
+    if (info == NULL)
+        return false;
+    if (info->fType == SkType_MemberProperty) {
+        if (displayable->getProperty(info->propertyIndex(), value) == false) {
+            SkASSERT(0);
+            return false;
+        }
+    }
+    return EvalMemberCommon(engine, info, displayable, value);
+}
+
+bool SkAnimatorScript::EvalMemberFunction(const char* member, size_t len, void* object, 
+        SkTDArray<SkScriptValue>& params, void* eng, SkScriptValue* value) {
+    SkScriptEngine* engine = (SkScriptEngine*) eng;
+    SkDisplayable* displayable = (SkDisplayable*) object;
+    SkString name(member, len);
+    const SkMemberInfo* info = displayable->getMember(name.c_str());
+    SkASSERT(info != NULL); /* !!! error handling unimplemented */
+    if (info->fType != SkType_MemberFunction) {
+        SkASSERT(0);
+        return false;
+    }
+    displayable->executeFunction(displayable, info->functionIndex(), params, info->getType(), 
+        value);
+    return EvalMemberCommon(engine, info, displayable, value);
+}
+
+bool SkAnimatorScript::EvaluateDisplayable(SkAnimateMaker& maker, SkDisplayable* displayable, const char* script, SkDisplayable** result) {
+    SkAnimatorScript engine(maker, displayable, SkType_Displayable);
+    SkScriptValue value;
+    bool success = engine.evaluate(script, &value, SkType_Displayable);
+    if (success)
+        *result = value.fOperand.fDisplayable;
+    return success;
+}
+
+bool SkAnimatorScript::EvaluateInt(SkAnimateMaker& maker, SkDisplayable* displayable, const char* script, int32_t* result) {
+    SkAnimatorScript engine(maker, displayable, SkType_Int);
+    SkScriptValue value;
+    bool success = engine.evaluate(script, &value, SkType_Int);
+    if (success)
+        *result = value.fOperand.fS32;
+    return success;
+}
+
+bool SkAnimatorScript::EvaluateFloat(SkAnimateMaker& maker, SkDisplayable* displayable, const char* script, SkScalar* result) {
+    SkAnimatorScript engine(maker, displayable, SkType_Float);
+    SkScriptValue value;
+    bool success = engine.evaluate(script, &value, SkType_Float);
+    if (success)
+        *result = value.fOperand.fScalar;
+    return success;
+}
+
+bool SkAnimatorScript::EvaluateString(SkAnimateMaker& maker, SkDisplayable* displayable, const char* script, SkString* result) {
+    SkAnimatorScript engine(maker, displayable, SkType_String);
+    SkScriptValue value;
+    bool success = engine.evaluate(script, &value, SkType_String);
+    if (success)
+        result->set(*(value.fOperand.fString));
+  return success;
+}
+
+bool SkAnimatorScript::EvaluateString(SkAnimateMaker& maker, SkDisplayable* displayable, SkDisplayable* parent, const char* script, SkString* result) {
+    SkAnimatorScript engine(maker, displayable, SkType_String);
+    engine.fParent = parent;
+    SkScriptValue value;
+    bool success = engine.evaluate(script, &value, SkType_String);
+    if (success)
+        result->set(*(value.fOperand.fString));
+  return success;
+}
+
+const SkDisplayEnumMap& SkAnimatorScript::GetEnumValues(SkDisplayTypes type) {
+    int index = SkTSearch<SkDisplayTypes>(&gEnumMaps[0].fType, gEnumMapCount, type, 
+        sizeof(SkDisplayEnumMap));
+    SkASSERT(index >= 0);
+    return gEnumMaps[index];
+}
+
+bool SkAnimatorScript::Infinity(const char* token, size_t len, void* user, SkScriptValue* value) {
+    if (SK_LITERAL_STR_EQUAL("Infinity", token, len) == false)
+        return false;
+    value->fType = SkType_Float;
+    value->fOperand.fScalar = SK_ScalarInfinity;
+    return true;
+}
+
+bool SkAnimatorScript::IsFinite(const char* function, size_t len, SkTDArray<SkScriptValue>& params, 
+        void* eng, SkScriptValue* value) {
+    if (SK_LITERAL_STR_EQUAL(function, "isFinite", len) == false)
+        return false;
+    if (params.count() != 1)
+        return false;
+    SkScriptValue* scriptValue = params.begin();
+    SkDisplayTypes type = scriptValue->fType;
+    SkScalar scalar = scriptValue->fOperand.fScalar;
+    value->fType = SkType_Int;
+    value->fOperand.fS32 = type == SkType_Float ? SkScalarIsNaN(scalar) == false && 
+        SkScalarAbs(scalar) != SK_ScalarInfinity    : type == SkType_Int;
+    return true;
+}
+
+bool SkAnimatorScript::IsNaN(const char* function, size_t len, SkTDArray<SkScriptValue>& params, 
+        void* eng, SkScriptValue* value) {
+    if (SK_LITERAL_STR_EQUAL("isNaN", function, len) == false)
+        return false;
+    if (params.count() != 1)
+        return false;
+    SkScriptValue* scriptValue = params.begin();
+    value->fType = SkType_Int;
+    value->fOperand.fS32 = scriptValue->fType == SkType_Float ? SkScalarIsNaN(scriptValue->fOperand.fScalar) : 0;
+    return true;
+}
+
+bool SkAnimatorScript::MapEnums(const char* ptr, const char* match, size_t len, int* value) {
+    int index = 0;
+    bool more = true;
+    do {
+        const char* last = strchr(ptr, '|');
+        if (last == NULL) {
+            last = &ptr[strlen(ptr)];
+            more = false;
+        }
+        size_t length = last - ptr;
+        if (len == length && strncmp(ptr, match, length) == 0) {
+            *value = index;
+            return true;
+        }
+        index++;
+        ptr = last + 1;
+    } while (more);
+    return false;
+}
+
+bool SkAnimatorScript::NaN(const char* token, size_t len, void* user, SkScriptValue* value) {
+    if (SK_LITERAL_STR_EQUAL("NaN", token, len) == false)
+        return false;
+    value->fType = SkType_Float;
+    value->fOperand.fScalar = SK_ScalarNaN;
+    return true;
+}
+
+#if 0
+bool SkAnimatorScript::ObjectToString(void* object, void* user, SkScriptValue* value) {
+    SkTDict<SkDisplayable*>* ids = (SkTDict<SkDisplayable*>*) user;
+    SkDisplayable* displayable = (SkDisplayable*) object;
+    const char* key;
+    bool success = ids->findKey(displayable, &key); 
+    if (success == false)
+        return false;
+    value->fOperand.fString =   new SkString(key);
+    value->fType = SkType_String;
+    return true;
+}
+#endif
+
+bool SkAnimatorScript::Unbox(void* m, SkScriptValue* scriptValue) {
+    SkAnimateMaker* maker = (SkAnimateMaker*) m;
+    SkASSERT((unsigned) scriptValue->fType == (unsigned) SkType_Displayable);
+    SkDisplayable* displayable = (SkDisplayable*) scriptValue->fOperand.fObject;
+    SkDisplayTypes type = displayable->getType();
+    switch (displayable->getType()) {
+        case SkType_Array: {
+            SkDisplayArray* boxedValue = (SkDisplayArray*) displayable;
+            scriptValue->fOperand.fArray = &boxedValue->values;
+            } break;
+        case SkType_Boolean: {
+            SkDisplayBoolean* boxedValue = (SkDisplayBoolean*) displayable;
+            scriptValue->fOperand.fS32 = boxedValue->value;
+            } break;
+        case SkType_Int: {
+            SkDisplayInt* boxedValue = (SkDisplayInt*) displayable;
+            scriptValue->fOperand.fS32 = boxedValue->value;
+            } break;
+        case SkType_Float: {
+            SkDisplayFloat* boxedValue = (SkDisplayFloat*) displayable;
+            scriptValue->fOperand.fScalar = boxedValue->value;
+            } break;
+        case SkType_String: {
+            SkDisplayString* boxedValue = (SkDisplayString*) displayable;
+            scriptValue->fOperand.fString = SkNEW_ARGS(SkString, (boxedValue->value));
+            } break;
+        default: {
+            const char* id;
+            bool success = maker->findKey(displayable, &id);
+            SkASSERT(success);
+            scriptValue->fOperand.fString = SkNEW_ARGS(SkString, (id));
+            type = SkType_String;
+        }
+    }
+    scriptValue->fType = type;
+    return true;
+}
+
+#if defined SK_SUPPORT_UNITTEST
+
+#include "SkAnimator.h"
+
+static const char scriptTestSetup[]  = 
+"<screenplay>\n"
+    "<text id='label' text='defg'/>\n"
+    "<add id='addLabel' use='label'/>\n"
+    "<text id='text1' text='test'/>\n"
+    "<apply scope='addLabel'>\n"
+        "<set target='label' field='text' to='#script:text1.text'/>\n"
+    "</apply>\n"
+    "<apply>\n"
+        "<paint id='labelPaint'>\n"
+            "<emboss id='emboss' direction='[1,1,1]'  />\n"
+        "</paint>\n"
+        "<animate id='animation' field='direction' target='emboss' from='[1,1,1]' to='[-1,1,1]' dur='1'/>\n"
+        "<set lval='direction[0]' target='emboss' to='-1' />\n"
+    "</apply>\n"
+    "<color id='testColor' color='0 ? rgb(0,0,0) : rgb(255,255,255)' />\n"
+    "<color id='xColor' color='rgb(12,34,56)' />\n"
+    "<array id='emptyArray' />\n"
+    "<array id='intArray' values='[1, 4, 6]' />\n"
+    "<int id='idx' value='2' />\n"
+    "<int id='idy' value='2' />\n"
+    "<string id='alpha' value='abc' />\n"
+    "<rect id='testRect' left='Math.cos(0)' top='2' right='12' bottom='5' />\n"
+    "<event id='evt'>\n"
+        "<input name='x' />\n"
+        "<apply scope='idy'>\n"
+            "<set field='value' to='evt.x.int' />\n"
+        "</apply>\n"
+    "</event>\n"
+"</screenplay>";
+
+#if !defined(SK_BUILD_FOR_BREW)
+
+#define DEFAULT_ANSWER   , 0
+
+static const SkScriptNAnswer scriptTests[]  = {
+    { "label.text.length == 4", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+//  { "labelPaint.measureText(label.text) > 0 ? labelPaint.measureText(label.text)+10 : 40", SkType_Float, 0, SkIntToScalar(0x23)  },
+    {   "Number.POSITIVE_INFINITY >= Number.MAX_VALUE ? 1 : 0", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "Infinity >= Number.MAX_VALUE ? 1 : 0", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "Number.NEGATIVE_INFINITY <= -Number.MAX_VALUE ? 1 : 0", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "Number.MIN_VALUE > 0 ? 1 : 0", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "isNaN(Number.NaN)", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "isNaN(NaN)", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "Math.sin(0)", SkType_Float, 0, SkIntToScalar(0) DEFAULT_ANSWER },
+    {   "alpha+alpha", SkType_String, 0, 0, "abcabc" },
+    {   "intArray[4]", SkType_Unknown DEFAULT_ANSWER DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "emptyArray[4]", SkType_Unknown DEFAULT_ANSWER DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "idx", SkType_Int, 2 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "intArray.length", SkType_Int, 3 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "intArray.values[0]", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "intArray[0]", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "idx.value", SkType_Int, 2 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "alpha.value", SkType_String, 0, 0, "abc" },
+    {   "alpha", SkType_String, 0, 0, "abc" },
+    {   "alpha.value+alpha.value", SkType_String, 0, 0, "abcabc" },
+    {   "alpha+idx", SkType_String, 0, 0, "abc2" },
+    {   "idx+alpha", SkType_String, 0, 0, "2abc" },
+    {   "intArray[idx]", SkType_Int, 6 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "alpha.slice(1,2)", SkType_String, 0, 0, "b" },
+    {   "alpha.value.slice(1,2)", SkType_String, 0, 0, "b" },
+    {   "testRect.left+2", SkType_Float, 0, SkIntToScalar(3) DEFAULT_ANSWER },
+    {   "0 ? Math.sin(0) : 1", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "0 ? intArray[0] : 1", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "0 ? intArray.values[0] : 1", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "0 ? idx : 1", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "0 ? idx.value : 1", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "0 ? alpha.slice(1,2) : 1", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    {   "0 ? alpha.value.slice(1,2) : 1", SkType_Int, 1 DEFAULT_ANSWER DEFAULT_ANSWER },
+    { "idy", SkType_Int, 3 DEFAULT_ANSWER DEFAULT_ANSWER }
+};
+#endif
+
+#define SkScriptNAnswer_testCount   SK_ARRAY_COUNT(scriptTests)
+
+void SkAnimatorScript::UnitTest() {
+#if !defined(SK_BUILD_FOR_BREW) && defined(SK_SUPPORT_UNITTEST)
+    SkAnimator animator;
+    SkASSERT(animator.decodeMemory(scriptTestSetup, sizeof(scriptTestSetup)-1));
+    SkEvent evt;
+    evt.setString("id", "evt");
+    evt.setS32("x", 3);
+    animator.doUserEvent(evt);
+    // set up animator with memory script above, then run value tests
+    for (unsigned index = 0; index < SkScriptNAnswer_testCount; index++) {
+        SkAnimatorScript engine(*animator.fMaker, NULL, scriptTests[index].fType);
+        SkScriptValue value;
+        const char* script = scriptTests[index].fScript;
+        bool success = engine.evaluateScript(&script, &value);
+        if (success == false) {
+            SkDebugf("script failed: %s\n", scriptTests[index].fScript);
+            SkASSERT(scriptTests[index].fType == SkType_Unknown);
+            continue;
+        }
+        SkASSERT(value.fType == scriptTests[index].fType);
+        SkScalar error;
+        switch (value.fType) {
+            case SkType_Int:
+                SkASSERT(value.fOperand.fS32 == scriptTests[index].fIntAnswer);
+                break;
+            case SkType_Float:
+                error = SkScalarAbs(value.fOperand.fScalar - scriptTests[index].fScalarAnswer);
+                SkASSERT(error < SK_Scalar1 / 10000);
+                break;
+            case SkType_String:
+                SkASSERT(strcmp(value.fOperand.fString->c_str(), scriptTests[index].fStringAnswer) == 0);
+                break;
+            default:
+                SkASSERT(0);
+        }
+    }
+#endif
+}
+
+#endif
+
+