slang_rs_reflection.cpp revision f69e1e58cf65555c4be3f6c5c53f89eb044f1db5 
1/*
2 * Copyright 2010-2012, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "slang_rs_reflection.h"
18
19#include <sys/stat.h>
20
21#include <cstdarg>
22#include <cctype>
23
24#include <algorithm>
25#include <sstream>
26#include <string>
27#include <utility>
28
29#include "llvm/ADT/APFloat.h"
30#include "llvm/ADT/StringExtras.h"
31
32#include "os_sep.h"
33#include "slang_rs_context.h"
34#include "slang_rs_export_var.h"
35#include "slang_rs_export_foreach.h"
36#include "slang_rs_export_func.h"
37#include "slang_rs_reflect_utils.h"
38#include "slang_version.h"
39#include "slang_utils.h"
40
41#include "slang_rs_reflection_base.h"
42
43#define RS_SCRIPT_CLASS_NAME_PREFIX      "ScriptC_"
44#define RS_SCRIPT_CLASS_SUPER_CLASS_NAME "ScriptC"
45
46#define RS_TYPE_CLASS_SUPER_CLASS_NAME   ".Script.FieldBase"
47
48#define RS_TYPE_ITEM_CLASS_NAME          "Item"
49
50#define RS_TYPE_ITEM_BUFFER_NAME         "mItemArray"
51#define RS_TYPE_ITEM_BUFFER_PACKER_NAME  "mIOBuffer"
52#define RS_TYPE_ELEMENT_REF_NAME         "mElementCache"
53
54#define RS_EXPORT_VAR_INDEX_PREFIX       "mExportVarIdx_"
55#define RS_EXPORT_VAR_PREFIX             "mExportVar_"
56#define RS_EXPORT_VAR_ELEM_PREFIX        "mExportVarElem_"
57#define RS_EXPORT_VAR_DIM_PREFIX         "mExportVarDim_"
58#define RS_EXPORT_VAR_CONST_PREFIX       "const_"
59
60#define RS_ELEM_PREFIX                   "__"
61
62#define RS_FP_PREFIX                     "__rs_fp_"
63
64#define RS_RESOURCE_NAME                 "__rs_resource_name"
65
66#define RS_EXPORT_FUNC_INDEX_PREFIX      "mExportFuncIdx_"
67#define RS_EXPORT_FOREACH_INDEX_PREFIX   "mExportForEachIdx_"
68
69#define RS_EXPORT_VAR_ALLOCATION_PREFIX  "mAlloction_"
70#define RS_EXPORT_VAR_DATA_STORAGE_PREFIX "mData_"
71
72namespace slang {
73
74// Some utility function using internal in RSReflection
75static bool GetClassNameFromFileName(const std::string &FileName,
76                                     std::string &ClassName) {
77  ClassName.clear();
78
79  if (FileName.empty() || (FileName == "-"))
80    return true;
81
82  ClassName =
83      RSSlangReflectUtils::JavaClassNameFromRSFileName(FileName.c_str());
84
85  return true;
86}
87
88static const char *GetMatrixTypeName(const RSExportMatrixType *EMT) {
89  static const char *MatrixTypeJavaNameMap[] = {
90    /* 2x2 */ "Matrix2f",
91    /* 3x3 */ "Matrix3f",
92    /* 4x4 */ "Matrix4f",
93  };
94  unsigned Dim = EMT->getDim();
95
96  if ((Dim - 2) < (sizeof(MatrixTypeJavaNameMap) / sizeof(const char*)))
97    return MatrixTypeJavaNameMap[ EMT->getDim() - 2 ];
98
99  slangAssert(false && "GetMatrixTypeName : Unsupported matrix dimension");
100  return NULL;
101}
102
103static const char *GetVectorAccessor(unsigned Index) {
104  static const char *VectorAccessorMap[] = {
105    /* 0 */ "x",
106    /* 1 */ "y",
107    /* 2 */ "z",
108    /* 3 */ "w",
109  };
110
111  slangAssert((Index < (sizeof(VectorAccessorMap) / sizeof(const char*))) &&
112              "Out-of-bound index to access vector member");
113
114  return VectorAccessorMap[Index];
115}
116
117static const char *GetPackerAPIName(const RSExportPrimitiveType *EPT) {
118  static const char *PrimitiveTypePackerAPINameMap[] = {
119    "",         // RSExportPrimitiveType::DataTypeFloat16
120    "addF32",   // RSExportPrimitiveType::DataTypeFloat32
121    "addF64",   // RSExportPrimitiveType::DataTypeFloat64
122    "addI8",    // RSExportPrimitiveType::DataTypeSigned8
123    "addI16",   // RSExportPrimitiveType::DataTypeSigned16
124    "addI32",   // RSExportPrimitiveType::DataTypeSigned32
125    "addI64",   // RSExportPrimitiveType::DataTypeSigned64
126    "addU8",    // RSExportPrimitiveType::DataTypeUnsigned8
127    "addU16",   // RSExportPrimitiveType::DataTypeUnsigned16
128    "addU32",   // RSExportPrimitiveType::DataTypeUnsigned32
129    "addU64",   // RSExportPrimitiveType::DataTypeUnsigned64
130    "addBoolean",  // RSExportPrimitiveType::DataTypeBoolean
131
132    "addU16",   // RSExportPrimitiveType::DataTypeUnsigned565
133    "addU16",   // RSExportPrimitiveType::DataTypeUnsigned5551
134    "addU16",   // RSExportPrimitiveType::DataTypeUnsigned4444
135
136    "addMatrix",   // RSExportPrimitiveType::DataTypeRSMatrix2x2
137    "addMatrix",   // RSExportPrimitiveType::DataTypeRSMatrix3x3
138    "addMatrix",   // RSExportPrimitiveType::DataTypeRSMatrix4x4
139
140    "addObj",   // RSExportPrimitiveType::DataTypeRSElement
141    "addObj",   // RSExportPrimitiveType::DataTypeRSType
142    "addObj",   // RSExportPrimitiveType::DataTypeRSAllocation
143    "addObj",   // RSExportPrimitiveType::DataTypeRSSampler
144    "addObj",   // RSExportPrimitiveType::DataTypeRSScript
145    "addObj",   // RSExportPrimitiveType::DataTypeRSMesh
146    "addObj",   // RSExportPrimitiveType::DataTypeRSPath
147    "addObj",   // RSExportPrimitiveType::DataTypeRSProgramFragment
148    "addObj",   // RSExportPrimitiveType::DataTypeRSProgramVertex
149    "addObj",   // RSExportPrimitiveType::DataTypeRSProgramRaster
150    "addObj",   // RSExportPrimitiveType::DataTypeRSProgramStore
151    "addObj",   // RSExportPrimitiveType::DataTypeRSFont
152  };
153  unsigned TypeId = EPT->getType();
154
155  if (TypeId < (sizeof(PrimitiveTypePackerAPINameMap) / sizeof(const char*)))
156    return PrimitiveTypePackerAPINameMap[ EPT->getType() ];
157
158  slangAssert(false && "GetPackerAPIName : Unknown primitive data type");
159  return NULL;
160}
161
162static std::string GetTypeName(const RSExportType *ET, bool Brackets = true) {
163  switch (ET->getClass()) {
164    case RSExportType::ExportClassPrimitive: {
165      return RSExportPrimitiveType::getRSReflectionType(
166          static_cast<const RSExportPrimitiveType*>(ET))->java_name;
167    }
168    case RSExportType::ExportClassPointer: {
169      const RSExportType *PointeeType =
170          static_cast<const RSExportPointerType*>(ET)->getPointeeType();
171
172      if (PointeeType->getClass() != RSExportType::ExportClassRecord)
173        return "Allocation";
174      else
175        return PointeeType->getElementName();
176    }
177    case RSExportType::ExportClassVector: {
178      const RSExportVectorType *EVT =
179          static_cast<const RSExportVectorType*>(ET);
180      std::stringstream VecName;
181      VecName << EVT->getRSReflectionType(EVT)->rs_java_vector_prefix
182              << EVT->getNumElement();
183      return VecName.str();
184    }
185    case RSExportType::ExportClassMatrix: {
186      return GetMatrixTypeName(static_cast<const RSExportMatrixType*>(ET));
187    }
188    case RSExportType::ExportClassConstantArray: {
189      const RSExportConstantArrayType* CAT =
190          static_cast<const RSExportConstantArrayType*>(ET);
191      std::string ElementTypeName = GetTypeName(CAT->getElementType());
192      if (Brackets) {
193        ElementTypeName.append("[]");
194      }
195      return ElementTypeName;
196    }
197    case RSExportType::ExportClassRecord: {
198      return ET->getElementName() + "."RS_TYPE_ITEM_CLASS_NAME;
199    }
200    default: {
201      slangAssert(false && "Unknown class of type");
202    }
203  }
204
205  return "";
206}
207
208static const char *GetTypeNullValue(const RSExportType *ET) {
209  switch (ET->getClass()) {
210    case RSExportType::ExportClassPrimitive: {
211      const RSExportPrimitiveType *EPT =
212          static_cast<const RSExportPrimitiveType*>(ET);
213      if (EPT->isRSObjectType())
214        return "null";
215      else if (EPT->getType() == RSExportPrimitiveType::DataTypeBoolean)
216        return "false";
217      else
218        return "0";
219      break;
220    }
221    case RSExportType::ExportClassPointer:
222    case RSExportType::ExportClassVector:
223    case RSExportType::ExportClassMatrix:
224    case RSExportType::ExportClassConstantArray:
225    case RSExportType::ExportClassRecord: {
226      return "null";
227      break;
228    }
229    default: {
230      slangAssert(false && "Unknown class of type");
231    }
232  }
233  return "";
234}
235
236static std::string GetBuiltinElementConstruct(const RSExportType *ET) {
237  if (ET->getClass() == RSExportType::ExportClassPrimitive) {
238    return std::string("Element.") + ET->getElementName();
239  } else if (ET->getClass() == RSExportType::ExportClassVector) {
240    const RSExportVectorType *EVT = static_cast<const RSExportVectorType*>(ET);
241    if (EVT->getType() == RSExportPrimitiveType::DataTypeFloat32) {
242      if (EVT->getNumElement() == 2)
243        return "Element.F32_2";
244      else if (EVT->getNumElement() == 3)
245        return "Element.F32_3";
246      else if (EVT->getNumElement() == 4)
247        return "Element.F32_4";
248    } else if (EVT->getType() == RSExportPrimitiveType::DataTypeUnsigned8) {
249      if (EVT->getNumElement() == 4)
250        return "Element.U8_4";
251    }
252  } else if (ET->getClass() == RSExportType::ExportClassMatrix) {
253    const RSExportMatrixType *EMT = static_cast<const RSExportMatrixType *>(ET);
254    switch (EMT->getDim()) {
255      case 2: return "Element.MATRIX_2X2";
256      case 3: return "Element.MATRIX_3X3";
257      case 4: return "Element.MATRIX_4X4";
258      default: slangAssert(false && "Unsupported dimension of matrix");
259    }
260  }
261  // RSExportType::ExportClassPointer can't be generated in a struct.
262
263  return "";
264}
265
266
267/********************** Methods to generate script class **********************/
268bool RSReflection::genScriptClass(Context &C,
269                                  const std::string &ClassName,
270                                  std::string &ErrorMsg) {
271  if (!C.startClass(Context::AM_Public,
272                    false,
273                    ClassName,
274                    RS_SCRIPT_CLASS_SUPER_CLASS_NAME,
275                    ErrorMsg))
276    return false;
277
278  genScriptClassConstructor(C);
279
280  // Reflect export variable
281  for (RSContext::const_export_var_iterator I = mRSContext->export_vars_begin(),
282           E = mRSContext->export_vars_end();
283       I != E;
284       I++)
285    genExportVariable(C, *I);
286
287  // Reflect export for each functions (only available on ICS+)
288  if (mRSContext->getTargetAPI() >= SLANG_ICS_TARGET_API) {
289    for (RSContext::const_export_foreach_iterator
290             I = mRSContext->export_foreach_begin(),
291             E = mRSContext->export_foreach_end();
292         I != E; I++)
293      genExportForEach(C, *I);
294  }
295
296  // Reflect export function
297  for (RSContext::const_export_func_iterator
298           I = mRSContext->export_funcs_begin(),
299           E = mRSContext->export_funcs_end();
300       I != E; I++)
301    genExportFunction(C, *I);
302
303  C.endClass();
304
305  return true;
306}
307
308void RSReflection::genScriptClassConstructor(Context &C) {
309  // Provide a simple way to reference this object.
310  C.indent() << "private static final String " RS_RESOURCE_NAME " = \""
311             << C.getResourceId()
312             << "\";" << std::endl;
313
314  // Generate a simple constructor with only a single parameter (the rest
315  // can be inferred from information we already have).
316  C.indent() << "// Constructor" << std::endl;
317  C.startFunction(Context::AM_Public,
318                  false,
319                  NULL,
320                  C.getClassName(),
321                  1,
322                  "RenderScript", "rs");
323  // Call alternate constructor with required parameters.
324  // Look up the proper raw bitcode resource id via the context.
325  C.indent() << "this(rs," << std::endl;
326  C.indent() << "     rs.getApplicationContext().getResources()," << std::endl;
327  C.indent() << "     rs.getApplicationContext().getResources()."
328                "getIdentifier(" << std::endl;
329  C.indent() << "         " RS_RESOURCE_NAME ", \"raw\"," << std::endl;
330  C.indent() << "         rs.getApplicationContext().getPackageName()));"
331             << std::endl;
332  C.endFunction();
333
334  // Alternate constructor (legacy) with 3 original parameters.
335  C.startFunction(Context::AM_Public,
336                  false,
337                  NULL,
338                  C.getClassName(),
339                  3,
340                  "RenderScript", "rs",
341                  "Resources", "resources",
342                  "int", "id");
343  // Call constructor of super class
344  C.indent() << "super(rs, resources, id);" << std::endl;
345
346  // If an exported variable has initial value, reflect it
347
348  for (RSContext::const_export_var_iterator I = mRSContext->export_vars_begin(),
349           E = mRSContext->export_vars_end();
350       I != E;
351       I++) {
352    const RSExportVar *EV = *I;
353    if (!EV->getInit().isUninit()) {
354      genInitExportVariable(C, EV->getType(), EV->getName(), EV->getInit());
355    } else if (EV->getArraySize()) {
356      // Always create an initial zero-init array object.
357      C.indent() << RS_EXPORT_VAR_PREFIX << EV->getName() << " = new "
358                 << GetTypeName(EV->getType(), false) << "["
359                 << EV->getArraySize() << "];" << std::endl;
360      size_t NumInits = EV->getNumInits();
361      const RSExportConstantArrayType *ECAT =
362          static_cast<const RSExportConstantArrayType*>(EV->getType());
363      const RSExportType *ET = ECAT->getElementType();
364      for (size_t i = 0; i < NumInits; i++) {
365        std::stringstream Name;
366        Name << EV->getName() << "[" << i << "]";
367        genInitExportVariable(C, ET, Name.str(), EV->getInitArray(i));
368      }
369    }
370    if (mRSContext->getTargetAPI() >= SLANG_JB_TARGET_API) {
371      genTypeInstance(C, EV->getType());
372    }
373    genFieldPackerInstance(C, EV->getType());
374  }
375
376  for (RSContext::const_export_foreach_iterator
377           I = mRSContext->export_foreach_begin(),
378           E = mRSContext->export_foreach_end();
379       I != E;
380       I++) {
381    const RSExportForEach *EF = *I;
382
383    const RSExportType *IET = EF->getInType();
384    if (IET) {
385      genTypeInstanceFromPointer(C, IET);
386    }
387    const RSExportType *OET = EF->getOutType();
388    if (OET) {
389      genTypeInstanceFromPointer(C, OET);
390    }
391  }
392
393  C.endFunction();
394
395  for (std::set<std::string>::iterator I = C.mTypesToCheck.begin(),
396                                       E = C.mTypesToCheck.end();
397       I != E;
398       I++) {
399    C.indent() << "private Element " RS_ELEM_PREFIX << *I << ";" << std::endl;
400  }
401
402  for (std::set<std::string>::iterator I = C.mFieldPackerTypes.begin(),
403                                       E = C.mFieldPackerTypes.end();
404       I != E;
405       I++) {
406    C.indent() << "private FieldPacker " RS_FP_PREFIX << *I << ";" << std::endl;
407  }
408
409  return;
410}
411
412void RSReflection::genInitBoolExportVariable(Context &C,
413                                             const std::string &VarName,
414                                             const clang::APValue &Val) {
415  slangAssert(!Val.isUninit() && "Not a valid initializer");
416
417  C.indent() << RS_EXPORT_VAR_PREFIX << VarName << " = ";
418  slangAssert((Val.getKind() == clang::APValue::Int) &&
419              "Bool type has wrong initial APValue");
420
421  C.out() << ((Val.getInt().getSExtValue() == 0) ? "false" : "true")
422          << ";" << std::endl;
423
424  return;
425}
426
427void RSReflection::genInitPrimitiveExportVariable(
428      Context &C,
429      const std::string &VarName,
430      const clang::APValue &Val) {
431  slangAssert(!Val.isUninit() && "Not a valid initializer");
432
433  C.indent() << RS_EXPORT_VAR_PREFIX << VarName << " = ";
434  C.out() << RSReflectionBase::genInitValue(Val);
435  C.out() << ";" << std::endl;
436
437  return;
438}
439
440void RSReflection::genInitExportVariable(Context &C,
441                                         const RSExportType *ET,
442                                         const std::string &VarName,
443                                         const clang::APValue &Val) {
444  slangAssert(!Val.isUninit() && "Not a valid initializer");
445
446  switch (ET->getClass()) {
447    case RSExportType::ExportClassPrimitive: {
448      const RSExportPrimitiveType *EPT =
449          static_cast<const RSExportPrimitiveType*>(ET);
450      if (EPT->getType() == RSExportPrimitiveType::DataTypeBoolean) {
451        genInitBoolExportVariable(C, VarName, Val);
452      } else {
453        genInitPrimitiveExportVariable(C, VarName, Val);
454      }
455      break;
456    }
457    case RSExportType::ExportClassPointer: {
458      if (!Val.isInt() || Val.getInt().getSExtValue() != 0)
459        std::cout << "Initializer which is non-NULL to pointer type variable "
460                     "will be ignored" << std::endl;
461      break;
462    }
463    case RSExportType::ExportClassVector: {
464      const RSExportVectorType *EVT =
465          static_cast<const RSExportVectorType*>(ET);
466      switch (Val.getKind()) {
467        case clang::APValue::Int:
468        case clang::APValue::Float: {
469          for (unsigned i = 0; i < EVT->getNumElement(); i++) {
470            std::string Name =  VarName + "." + GetVectorAccessor(i);
471            genInitPrimitiveExportVariable(C, Name, Val);
472          }
473          break;
474        }
475        case clang::APValue::Vector: {
476          std::stringstream VecName;
477          VecName << EVT->getRSReflectionType(EVT)->rs_java_vector_prefix
478                  << EVT->getNumElement();
479          C.indent() << RS_EXPORT_VAR_PREFIX << VarName << " = new "
480                     << VecName.str() << "();" << std::endl;
481
482          unsigned NumElements =
483              std::min(static_cast<unsigned>(EVT->getNumElement()),
484                       Val.getVectorLength());
485          for (unsigned i = 0; i < NumElements; i++) {
486            const clang::APValue &ElementVal = Val.getVectorElt(i);
487            std::string Name = VarName + "." + GetVectorAccessor(i);
488            genInitPrimitiveExportVariable(C, Name, ElementVal);
489          }
490          break;
491        }
492        case clang::APValue::MemberPointer:
493        case clang::APValue::Uninitialized:
494        case clang::APValue::ComplexInt:
495        case clang::APValue::ComplexFloat:
496        case clang::APValue::LValue:
497        case clang::APValue::Array:
498        case clang::APValue::Struct:
499        case clang::APValue::Union:
500        case clang::APValue::AddrLabelDiff: {
501          slangAssert(false && "Unexpected type of value of initializer.");
502        }
503      }
504      break;
505    }
506    // TODO(zonr): Resolving initializer of a record (and matrix) type variable
507    // is complex. It cannot obtain by just simply evaluating the initializer
508    // expression.
509    case RSExportType::ExportClassMatrix:
510    case RSExportType::ExportClassConstantArray:
511    case RSExportType::ExportClassRecord: {
512#if 0
513      unsigned InitIndex = 0;
514      const RSExportRecordType *ERT =
515          static_cast<const RSExportRecordType*>(ET);
516
517      slangAssert((Val.getKind() == clang::APValue::Vector) &&
518          "Unexpected type of initializer for record type variable");
519
520      C.indent() << RS_EXPORT_VAR_PREFIX << VarName
521                 << " = new " << ERT->getElementName()
522                 <<  "."RS_TYPE_ITEM_CLASS_NAME"();" << std::endl;
523
524      for (RSExportRecordType::const_field_iterator I = ERT->fields_begin(),
525               E = ERT->fields_end();
526           I != E;
527           I++) {
528        const RSExportRecordType::Field *F = *I;
529        std::string FieldName = VarName + "." + F->getName();
530
531        if (InitIndex > Val.getVectorLength())
532          break;
533
534        genInitPrimitiveExportVariable(C,
535                                       FieldName,
536                                       Val.getVectorElt(InitIndex++));
537      }
538#endif
539      slangAssert(false && "Unsupported initializer for record/matrix/constant "
540                           "array type variable currently");
541      break;
542    }
543    default: {
544      slangAssert(false && "Unknown class of type");
545    }
546  }
547  return;
548}
549
550void RSReflection::genExportVariable(Context &C, const RSExportVar *EV) {
551  const RSExportType *ET = EV->getType();
552
553  C.indent() << "private final static int "RS_EXPORT_VAR_INDEX_PREFIX
554             << EV->getName() << " = " << C.getNextExportVarSlot() << ";"
555             << std::endl;
556
557  switch (ET->getClass()) {
558    case RSExportType::ExportClassPrimitive: {
559      genPrimitiveTypeExportVariable(C, EV);
560      break;
561    }
562    case RSExportType::ExportClassPointer: {
563      genPointerTypeExportVariable(C, EV);
564      break;
565    }
566    case RSExportType::ExportClassVector: {
567      genVectorTypeExportVariable(C, EV);
568      break;
569    }
570    case RSExportType::ExportClassMatrix: {
571      genMatrixTypeExportVariable(C, EV);
572      break;
573    }
574    case RSExportType::ExportClassConstantArray: {
575      genConstantArrayTypeExportVariable(C, EV);
576      break;
577    }
578    case RSExportType::ExportClassRecord: {
579      genRecordTypeExportVariable(C, EV);
580      break;
581    }
582    default: {
583      slangAssert(false && "Unknown class of type");
584    }
585  }
586
587  return;
588}
589
590void RSReflection::genExportFunction(Context &C, const RSExportFunc *EF) {
591  C.indent() << "private final static int "RS_EXPORT_FUNC_INDEX_PREFIX
592             << EF->getName() << " = " << C.getNextExportFuncSlot() << ";"
593             << std::endl;
594
595  // invoke_*()
596  Context::ArgTy Args;
597
598  if (EF->hasParam()) {
599    for (RSExportFunc::const_param_iterator I = EF->params_begin(),
600             E = EF->params_end();
601         I != E;
602         I++) {
603      Args.push_back(std::make_pair(GetTypeName((*I)->getType()),
604                                    (*I)->getName()));
605    }
606  }
607
608  C.startFunction(Context::AM_Public,
609                  false,
610                  "void",
611                  "invoke_" + EF->getName(/*Mangle=*/ false),
612                      // We are using un-mangled name since Java
613                      // supports method overloading.
614                  Args);
615
616  if (!EF->hasParam()) {
617    C.indent() << "invoke("RS_EXPORT_FUNC_INDEX_PREFIX << EF->getName() << ");"
618               << std::endl;
619  } else {
620    const RSExportRecordType *ERT = EF->getParamPacketType();
621    std::string FieldPackerName = EF->getName() + "_fp";
622
623    if (genCreateFieldPacker(C, ERT, FieldPackerName.c_str()))
624      genPackVarOfType(C, ERT, NULL, FieldPackerName.c_str());
625
626    C.indent() << "invoke("RS_EXPORT_FUNC_INDEX_PREFIX << EF->getName() << ", "
627               << FieldPackerName << ");" << std::endl;
628  }
629
630  C.endFunction();
631  return;
632}
633
634void RSReflection::genExportForEach(Context &C, const RSExportForEach *EF) {
635  if (EF->isDummyRoot()) {
636    // Skip reflection for dummy root() kernels. Note that we have to
637    // advance the next slot number for ForEach, however.
638    C.indent() << "//private final static int "RS_EXPORT_FOREACH_INDEX_PREFIX
639               << EF->getName() << " = " << C.getNextExportForEachSlot() << ";"
640               << std::endl;
641    return;
642  }
643
644  C.indent() << "private final static int "RS_EXPORT_FOREACH_INDEX_PREFIX
645             << EF->getName() << " = " << C.getNextExportForEachSlot() << ";"
646             << std::endl;
647
648  // forEach_*()
649  Context::ArgTy Args;
650
651  slangAssert(EF->getNumParameters() > 0 || EF->hasReturn());
652
653  if (EF->hasIn())
654    Args.push_back(std::make_pair("Allocation", "ain"));
655  if (EF->hasOut() || EF->hasReturn())
656    Args.push_back(std::make_pair("Allocation", "aout"));
657
658  const RSExportRecordType *ERT = EF->getParamPacketType();
659  if (ERT) {
660    for (RSExportForEach::const_param_iterator I = EF->params_begin(),
661             E = EF->params_end();
662         I != E;
663         I++) {
664      Args.push_back(std::make_pair(GetTypeName((*I)->getType()),
665                                    (*I)->getName()));
666    }
667  }
668
669  const RSExportType *IET = EF->getInType();
670  const RSExportType *OET = EF->getOutType();
671
672  if (mRSContext->getTargetAPI() >= SLANG_JB_MR1_TARGET_API) {
673      int signature = 0;
674      C.startFunction(Context::AM_Public,
675                      false,
676                      "Script.KernelID",
677                      "getKernelID_" + EF->getName(),
678                      0);
679
680      if (IET)
681          signature |= 1;
682      if (OET)
683          signature |= 2;
684
685      //TODO: add element checking
686      C.indent() << "return createKernelID(" << RS_EXPORT_FOREACH_INDEX_PREFIX
687                 << EF->getName() << ", " << signature << ", null, null);"
688                 << std::endl;
689
690      C.endFunction();
691  }
692
693  C.startFunction(Context::AM_Public,
694                  false,
695                  "void",
696                  "forEach_" + EF->getName(),
697                  Args);
698
699  if (IET) {
700    genTypeCheck(C, IET, "ain");
701  }
702  if (OET) {
703    genTypeCheck(C, OET, "aout");
704  }
705
706  if (EF->hasIn() && (EF->hasOut() || EF->hasReturn())) {
707    C.indent() << "// Verify dimensions" << std::endl;
708    C.indent() << "Type tIn = ain.getType();" << std::endl;
709    C.indent() << "Type tOut = aout.getType();" << std::endl;
710    C.indent() << "if ((tIn.getCount() != tOut.getCount()) ||" << std::endl;
711    C.indent() << "    (tIn.getX() != tOut.getX()) ||" << std::endl;
712    C.indent() << "    (tIn.getY() != tOut.getY()) ||" << std::endl;
713    C.indent() << "    (tIn.getZ() != tOut.getZ()) ||" << std::endl;
714    C.indent() << "    (tIn.hasFaces() != tOut.hasFaces()) ||" << std::endl;
715    C.indent() << "    (tIn.hasMipmaps() != tOut.hasMipmaps())) {" << std::endl;
716    C.indent() << "    throw new RSRuntimeException(\"Dimension mismatch "
717               << "between input and output parameters!\");";
718    C.out()    << std::endl;
719    C.indent() << "}" << std::endl;
720  }
721
722  std::string FieldPackerName = EF->getName() + "_fp";
723  if (ERT) {
724    if (genCreateFieldPacker(C, ERT, FieldPackerName.c_str())) {
725      genPackVarOfType(C, ERT, NULL, FieldPackerName.c_str());
726    }
727  }
728  C.indent() << "forEach("RS_EXPORT_FOREACH_INDEX_PREFIX << EF->getName();
729
730  if (EF->hasIn())
731    C.out() << ", ain";
732  else
733    C.out() << ", null";
734
735  if (EF->hasOut() || EF->hasReturn())
736    C.out() << ", aout";
737  else
738    C.out() << ", null";
739
740  if (EF->hasUsrData())
741    C.out() << ", " << FieldPackerName;
742  else
743    C.out() << ", null";
744
745  C.out() << ");" << std::endl;
746
747  C.endFunction();
748  return;
749}
750
751void RSReflection::genTypeInstanceFromPointer(Context &C,
752                                              const RSExportType *ET) {
753  if (ET->getClass() == RSExportType::ExportClassPointer) {
754    // For pointer parameters to original forEach kernels.
755    const RSExportPointerType *EPT =
756        static_cast<const RSExportPointerType*>(ET);
757    genTypeInstance(C, EPT->getPointeeType());
758  } else {
759    // For handling pass-by-value kernel parameters.
760    genTypeInstance(C, ET);
761  }
762}
763
764void RSReflection::genTypeInstance(Context &C,
765                                   const RSExportType *ET) {
766  switch (ET->getClass()) {
767    case RSExportType::ExportClassPrimitive:
768    case RSExportType::ExportClassVector:
769    case RSExportType::ExportClassConstantArray: {
770      std::string TypeName = ET->getElementName();
771      if (C.addTypeNameForElement(TypeName)) {
772        C.indent() << RS_ELEM_PREFIX << TypeName << " = Element." << TypeName
773                   << "(rs);" << std::endl;
774      }
775      break;
776    }
777
778    case RSExportType::ExportClassRecord: {
779      std::string ClassName = ET->getElementName();
780      if (C.addTypeNameForElement(ClassName)) {
781        C.indent() << RS_ELEM_PREFIX << ClassName << " = " << ClassName <<
782                      ".createElement(rs);" << std::endl;
783      }
784      break;
785    }
786
787    default:
788      break;
789  }
790}
791
792void RSReflection::genFieldPackerInstance(Context &C,
793                                          const RSExportType *ET) {
794  switch (ET->getClass()) {
795    case RSExportType::ExportClassPrimitive:
796    case RSExportType::ExportClassVector:
797    case RSExportType::ExportClassConstantArray:
798    case RSExportType::ExportClassRecord: {
799      std::string TypeName = ET->getElementName();
800      C.addTypeNameForFieldPacker(TypeName);
801      break;
802    }
803
804    default:
805      break;
806  }
807}
808
809void RSReflection::genTypeCheck(Context &C,
810                                const RSExportType *ET,
811                                const char *VarName) {
812  C.indent() << "// check " << VarName << std::endl;
813
814  if (ET->getClass() == RSExportType::ExportClassPointer) {
815    const RSExportPointerType *EPT =
816        static_cast<const RSExportPointerType*>(ET);
817    ET = EPT->getPointeeType();
818  }
819
820  std::string TypeName;
821
822  switch (ET->getClass()) {
823    case RSExportType::ExportClassPrimitive:
824    case RSExportType::ExportClassVector:
825    case RSExportType::ExportClassRecord: {
826      TypeName = ET->getElementName();
827      break;
828    }
829
830    default:
831      break;
832  }
833
834  if (!TypeName.empty()) {
835    C.indent() << "if (!" << VarName
836               << ".getType().getElement().isCompatible(" RS_ELEM_PREFIX
837               << TypeName << ")) {" << std::endl;
838    C.indent() << "    throw new RSRuntimeException(\"Type mismatch with "
839               << TypeName << "!\");" << std::endl;
840    C.indent() << "}" << std::endl;
841  }
842
843  return;
844}
845
846
847void RSReflection::genPrimitiveTypeExportVariable(
848    Context &C,
849    const RSExportVar *EV) {
850  slangAssert((EV->getType()->getClass() == RSExportType::ExportClassPrimitive)
851              && "Variable should be type of primitive here");
852
853  const RSExportPrimitiveType *EPT =
854      static_cast<const RSExportPrimitiveType*>(EV->getType());
855  std::string TypeName = GetTypeName(EPT);
856  std::string VarName = EV->getName();
857
858  genPrivateExportVariable(C, TypeName, EV->getName());
859
860  if (EV->isConst()) {
861    C.indent() << "public final static " << TypeName
862               << " " RS_EXPORT_VAR_CONST_PREFIX << VarName << " = ";
863    const clang::APValue &Val = EV->getInit();
864    C.out() << RSReflectionBase::genInitValue(Val, EPT->getType() ==
865        RSExportPrimitiveType::DataTypeBoolean) << ";" << std::endl;
866  } else {
867    // set_*()
868    // This must remain synchronized, since multiple Dalvik threads may
869    // be calling setters.
870    C.startFunction(Context::AM_PublicSynchronized,
871                    false,
872                    "void",
873                    "set_" + VarName,
874                    1,
875                    TypeName.c_str(), "v");
876    if ((EPT->getSize() < 4) || EV->isUnsigned()) {
877      // We create/cache a per-type FieldPacker. This allows us to reuse the
878      // validation logic (for catching negative inputs from Dalvik, as well
879      // as inputs that are too large to be represented in the unsigned type).
880      // Sub-integer types are also handled specially here, so that we don't
881      // overwrite bytes accidentally.
882      std::string ElemName = EPT->getElementName();
883      std::string FPName;
884      FPName = RS_FP_PREFIX + ElemName;
885      C.indent() << "if (" << FPName << "!= null) {"
886                 << std::endl;
887      C.incIndentLevel();
888      C.indent() << FPName << ".reset();" << std::endl;
889      C.decIndentLevel();
890      C.indent() << "} else {" << std::endl;
891      C.incIndentLevel();
892      C.indent() << FPName << " = new FieldPacker("
893                 << EPT->getSize() << ");" << std::endl;
894      C.decIndentLevel();
895      C.indent() << "}" << std::endl;
896
897      genPackVarOfType(C, EPT, "v", FPName.c_str());
898      C.indent() << "setVar("RS_EXPORT_VAR_INDEX_PREFIX << VarName
899                 << ", " << FPName << ");" << std::endl;
900    } else {
901      C.indent() << "setVar("RS_EXPORT_VAR_INDEX_PREFIX << VarName
902                 << ", v);" << std::endl;
903    }
904
905    // Dalvik update comes last, since the input may be invalid (and hence
906    // throw an exception).
907    C.indent() << RS_EXPORT_VAR_PREFIX << VarName << " = v;" << std::endl;
908
909    C.endFunction();
910  }
911
912  genGetExportVariable(C, TypeName, VarName);
913  genGetFieldID(C, VarName);
914  return;
915}
916
917void RSReflection::genPointerTypeExportVariable(Context &C,
918                                                const RSExportVar *EV) {
919  const RSExportType *ET = EV->getType();
920  const RSExportType *PointeeType;
921
922  slangAssert((ET->getClass() == RSExportType::ExportClassPointer) &&
923              "Variable should be type of pointer here");
924
925  PointeeType = static_cast<const RSExportPointerType*>(ET)->getPointeeType();
926  std::string TypeName = GetTypeName(ET);
927  std::string VarName = EV->getName();
928
929  genPrivateExportVariable(C, TypeName, VarName);
930
931  // bind_*()
932  C.startFunction(Context::AM_Public,
933                  false,
934                  "void",
935                  "bind_" + VarName,
936                  1,
937                  TypeName.c_str(), "v");
938
939  C.indent() << RS_EXPORT_VAR_PREFIX << VarName << " = v;" << std::endl;
940  C.indent() << "if (v == null) bindAllocation(null, "RS_EXPORT_VAR_INDEX_PREFIX
941             << VarName << ");" << std::endl;
942
943  if (PointeeType->getClass() == RSExportType::ExportClassRecord)
944    C.indent() << "else bindAllocation(v.getAllocation(), "
945        RS_EXPORT_VAR_INDEX_PREFIX << VarName << ");"
946               << std::endl;
947  else
948    C.indent() << "else bindAllocation(v, "RS_EXPORT_VAR_INDEX_PREFIX
949               << VarName << ");" << std::endl;
950
951  C.endFunction();
952
953  genGetExportVariable(C, TypeName, VarName);
954  return;
955}
956
957void RSReflection::genVectorTypeExportVariable(Context &C,
958                                               const RSExportVar *EV) {
959  slangAssert((EV->getType()->getClass() == RSExportType::ExportClassVector) &&
960              "Variable should be type of vector here");
961
962  std::string TypeName = GetTypeName(EV->getType());
963  std::string VarName = EV->getName();
964
965  genPrivateExportVariable(C, TypeName, VarName);
966  genSetExportVariable(C, TypeName, EV);
967  genGetExportVariable(C, TypeName, VarName);
968  genGetFieldID(C, VarName);
969  return;
970}
971
972void RSReflection::genMatrixTypeExportVariable(Context &C,
973                                               const RSExportVar *EV) {
974  slangAssert((EV->getType()->getClass() == RSExportType::ExportClassMatrix) &&
975              "Variable should be type of matrix here");
976
977    const RSExportType *ET = EV->getType();
978  std::string TypeName = GetTypeName(ET);
979  std::string VarName = EV->getName();
980
981  genPrivateExportVariable(C, TypeName, VarName);
982
983  // set_*()
984  if (!EV->isConst()) {
985    const char *FieldPackerName = "fp";
986    C.startFunction(Context::AM_PublicSynchronized,
987                    false,
988                    "void",
989                    "set_" + VarName,
990                    1,
991                    TypeName.c_str(), "v");
992    C.indent() << RS_EXPORT_VAR_PREFIX << VarName << " = v;" << std::endl;
993
994    if (genCreateFieldPacker(C, ET, FieldPackerName))
995      genPackVarOfType(C, ET, "v", FieldPackerName);
996    C.indent() << "setVar("RS_EXPORT_VAR_INDEX_PREFIX << VarName << ", "
997               << FieldPackerName << ");" << std::endl;
998
999    C.endFunction();
1000  }
1001
1002  genGetExportVariable(C, TypeName, VarName);
1003  genGetFieldID(C, VarName);
1004  return;
1005}
1006
1007void RSReflection::genConstantArrayTypeExportVariable(
1008    Context &C,
1009    const RSExportVar *EV) {
1010  slangAssert((EV->getType()->getClass() ==
1011               RSExportType::ExportClassConstantArray) &&
1012              "Variable should be type of constant array here");
1013
1014  std::string TypeName = GetTypeName(EV->getType());
1015  std::string VarName = EV->getName();
1016
1017  genPrivateExportVariable(C, TypeName, VarName);
1018  genSetExportVariable(C, TypeName, EV);
1019  genGetExportVariable(C, TypeName, VarName);
1020  genGetFieldID(C, VarName);
1021  return;
1022}
1023
1024void RSReflection::genRecordTypeExportVariable(Context &C,
1025                                               const RSExportVar *EV) {
1026  slangAssert((EV->getType()->getClass() == RSExportType::ExportClassRecord) &&
1027              "Variable should be type of struct here");
1028
1029  std::string TypeName = GetTypeName(EV->getType());
1030  std::string VarName = EV->getName();
1031
1032  genPrivateExportVariable(C, TypeName, VarName);
1033  genSetExportVariable(C, TypeName, EV);
1034  genGetExportVariable(C, TypeName, VarName);
1035  genGetFieldID(C, VarName);
1036  return;
1037}
1038
1039void RSReflection::genPrivateExportVariable(Context &C,
1040                                            const std::string &TypeName,
1041                                            const std::string &VarName) {
1042  C.indent() << "private " << TypeName << " "RS_EXPORT_VAR_PREFIX
1043             << VarName << ";" << std::endl;
1044  return;
1045}
1046
1047void RSReflection::genSetExportVariable(Context &C,
1048                                        const std::string &TypeName,
1049                                        const RSExportVar *EV) {
1050  if (!EV->isConst()) {
1051    const char *FieldPackerName = "fp";
1052    std::string VarName = EV->getName();
1053    const RSExportType *ET = EV->getType();
1054    C.startFunction(Context::AM_PublicSynchronized,
1055                    false,
1056                    "void",
1057                    "set_" + VarName,
1058                    1,
1059                    TypeName.c_str(), "v");
1060    C.indent() << RS_EXPORT_VAR_PREFIX << VarName << " = v;" << std::endl;
1061
1062    if (genCreateFieldPacker(C, ET, FieldPackerName))
1063      genPackVarOfType(C, ET, "v", FieldPackerName);
1064
1065    if (mRSContext->getTargetAPI() < SLANG_JB_TARGET_API) {
1066      // Legacy apps must use the old setVar() without Element/dim components.
1067      C.indent() << "setVar("RS_EXPORT_VAR_INDEX_PREFIX << VarName
1068                 << ", " << FieldPackerName << ");" << std::endl;
1069    } else {
1070      // We only have support for one-dimensional array reflection today,
1071      // but the entry point (i.e. setVar()) takes an array of dimensions.
1072      C.indent() << "int []__dimArr = new int[1];" << std::endl;
1073      C.indent() << "__dimArr[0] = " << ET->getSize() << ";" << std::endl;
1074      C.indent() << "setVar("RS_EXPORT_VAR_INDEX_PREFIX << VarName << ", "
1075                 << FieldPackerName << ", " RS_ELEM_PREFIX
1076                 << ET->getElementName() << ", __dimArr);" << std::endl;
1077    }
1078
1079    C.endFunction();
1080  }
1081  return;
1082}
1083
1084void RSReflection::genGetExportVariable(Context &C,
1085                                        const std::string &TypeName,
1086                                        const std::string &VarName) {
1087  C.startFunction(Context::AM_Public,
1088                  false,
1089                  TypeName.c_str(),
1090                  "get_" + VarName,
1091                  0);
1092
1093  C.indent() << "return "RS_EXPORT_VAR_PREFIX << VarName << ";" << std::endl;
1094
1095  C.endFunction();
1096}
1097
1098void RSReflection::genGetFieldID(Context &C, const std::string &VarName) {
1099  // We only generate getFieldID_*() for non-Pointer (bind) types.
1100  if (mRSContext->getTargetAPI() >= SLANG_JB_MR1_TARGET_API) {
1101    C.startFunction(Context::AM_Public,
1102                    false,
1103                    "Script.FieldID",
1104                    "getFieldID_" + VarName,
1105                    0);
1106
1107    C.indent() << "return createFieldID(" << RS_EXPORT_VAR_INDEX_PREFIX
1108               << VarName << ", null);" << std::endl;
1109
1110    C.endFunction();
1111  }
1112}
1113
1114/******************* Methods to generate script class /end *******************/
1115
1116bool RSReflection::genCreateFieldPacker(Context &C,
1117                                        const RSExportType *ET,
1118                                        const char *FieldPackerName) {
1119  size_t AllocSize = RSExportType::GetTypeAllocSize(ET);
1120  if (AllocSize > 0)
1121    C.indent() << "FieldPacker " << FieldPackerName << " = new FieldPacker("
1122               << AllocSize << ");" << std::endl;
1123  else
1124    return false;
1125  return true;
1126}
1127
1128void RSReflection::genPackVarOfType(Context &C,
1129                                    const RSExportType *ET,
1130                                    const char *VarName,
1131                                    const char *FieldPackerName) {
1132  switch (ET->getClass()) {
1133    case RSExportType::ExportClassPrimitive:
1134    case RSExportType::ExportClassVector: {
1135      C.indent() << FieldPackerName << "."
1136                 << GetPackerAPIName(
1137                     static_cast<const RSExportPrimitiveType*>(ET))
1138                 << "(" << VarName << ");" << std::endl;
1139      break;
1140    }
1141    case RSExportType::ExportClassPointer: {
1142      // Must reflect as type Allocation in Java
1143      const RSExportType *PointeeType =
1144          static_cast<const RSExportPointerType*>(ET)->getPointeeType();
1145
1146      if (PointeeType->getClass() != RSExportType::ExportClassRecord)
1147        C.indent() << FieldPackerName << ".addI32(" << VarName
1148                   << ".getPtr());" << std::endl;
1149      else
1150        C.indent() << FieldPackerName << ".addI32(" << VarName
1151                   << ".getAllocation().getPtr());" << std::endl;
1152      break;
1153    }
1154    case RSExportType::ExportClassMatrix: {
1155      C.indent() << FieldPackerName << ".addMatrix(" << VarName << ");"
1156                 << std::endl;
1157      break;
1158    }
1159    case RSExportType::ExportClassConstantArray: {
1160      const RSExportConstantArrayType *ECAT =
1161          static_cast<const RSExportConstantArrayType *>(ET);
1162
1163      // TODO(zonr): more elegant way. Currently, we obtain the unique index
1164      //             variable (this method involves recursive call which means
1165      //             we may have more than one level loop, therefore we can't
1166      //             always use the same index variable name here) name given
1167      //             in the for-loop from counting the '.' in @VarName.
1168      unsigned Level = 0;
1169      size_t LastDotPos = 0;
1170      std::string ElementVarName(VarName);
1171
1172      while (LastDotPos != std::string::npos) {
1173        LastDotPos = ElementVarName.find_first_of('.', LastDotPos + 1);
1174        Level++;
1175      }
1176      std::string IndexVarName("ct");
1177      IndexVarName.append(llvm::utostr_32(Level));
1178
1179      C.indent() << "for (int " << IndexVarName << " = 0; " <<
1180                          IndexVarName << " < " << ECAT->getSize() << "; " <<
1181                          IndexVarName << "++)";
1182      C.startBlock();
1183
1184      ElementVarName.append("[" + IndexVarName + "]");
1185      genPackVarOfType(C, ECAT->getElementType(), ElementVarName.c_str(),
1186                       FieldPackerName);
1187
1188      C.endBlock();
1189      break;
1190    }
1191    case RSExportType::ExportClassRecord: {
1192      const RSExportRecordType *ERT =
1193          static_cast<const RSExportRecordType*>(ET);
1194      // Relative pos from now on in field packer
1195      unsigned Pos = 0;
1196
1197      for (RSExportRecordType::const_field_iterator I = ERT->fields_begin(),
1198               E = ERT->fields_end();
1199           I != E;
1200           I++) {
1201        const RSExportRecordType::Field *F = *I;
1202        std::string FieldName;
1203        size_t FieldOffset = F->getOffsetInParent();
1204        size_t FieldStoreSize = RSExportType::GetTypeStoreSize(F->getType());
1205        size_t FieldAllocSize = RSExportType::GetTypeAllocSize(F->getType());
1206
1207        if (VarName != NULL)
1208          FieldName = VarName + ("." + F->getName());
1209        else
1210          FieldName = F->getName();
1211
1212        if (FieldOffset > Pos)
1213          C.indent() << FieldPackerName << ".skip("
1214                     << (FieldOffset - Pos) << ");" << std::endl;
1215
1216        genPackVarOfType(C, F->getType(), FieldName.c_str(), FieldPackerName);
1217
1218        // There is padding in the field type
1219        if (FieldAllocSize > FieldStoreSize)
1220            C.indent() << FieldPackerName << ".skip("
1221                       << (FieldAllocSize - FieldStoreSize)
1222                       << ");" << std::endl;
1223
1224        Pos = FieldOffset + FieldAllocSize;
1225      }
1226
1227      // There maybe some padding after the struct
1228      if (RSExportType::GetTypeAllocSize(ERT) > Pos)
1229        C.indent() << FieldPackerName << ".skip("
1230                   << RSExportType::GetTypeAllocSize(ERT) - Pos << ");"
1231                   << std::endl;
1232      break;
1233    }
1234    default: {
1235      slangAssert(false && "Unknown class of type");
1236    }
1237  }
1238
1239  return;
1240}
1241
1242void RSReflection::genAllocateVarOfType(Context &C,
1243                                        const RSExportType *T,
1244                                        const std::string &VarName) {
1245  switch (T->getClass()) {
1246    case RSExportType::ExportClassPrimitive: {
1247      // Primitive type like int in Java has its own storage once it's declared.
1248      //
1249      // FIXME: Should we allocate storage for RS object?
1250      // if (static_cast<const RSExportPrimitiveType *>(T)->isRSObjectType())
1251      //  C.indent() << VarName << " = new " << GetTypeName(T) << "();"
1252      //             << std::endl;
1253      break;
1254    }
1255    case RSExportType::ExportClassPointer: {
1256      // Pointer type is an instance of Allocation or a TypeClass whose value is
1257      // expected to be assigned by programmer later in Java program. Therefore
1258      // we don't reflect things like [VarName] = new Allocation();
1259      C.indent() << VarName << " = null;" << std::endl;
1260      break;
1261    }
1262    case RSExportType::ExportClassConstantArray: {
1263      const RSExportConstantArrayType *ECAT =
1264          static_cast<const RSExportConstantArrayType *>(T);
1265      const RSExportType *ElementType = ECAT->getElementType();
1266
1267      C.indent() << VarName << " = new " << GetTypeName(ElementType)
1268                 << "[" << ECAT->getSize() << "];" << std::endl;
1269
1270      // Primitive type element doesn't need allocation code.
1271      if (ElementType->getClass() != RSExportType::ExportClassPrimitive) {
1272        C.indent() << "for (int $ct = 0; $ct < " << ECAT->getSize() << "; "
1273                            "$ct++)";
1274        C.startBlock();
1275
1276        std::string ElementVarName(VarName);
1277        ElementVarName.append("[$ct]");
1278        genAllocateVarOfType(C, ElementType, ElementVarName);
1279
1280        C.endBlock();
1281      }
1282      break;
1283    }
1284    case RSExportType::ExportClassVector:
1285    case RSExportType::ExportClassMatrix:
1286    case RSExportType::ExportClassRecord: {
1287      C.indent() << VarName << " = new " << GetTypeName(T) << "();"
1288                 << std::endl;
1289      break;
1290    }
1291  }
1292  return;
1293}
1294
1295void RSReflection::genNewItemBufferIfNull(Context &C,
1296                                          const char *Index) {
1297  C.indent() << "if (" RS_TYPE_ITEM_BUFFER_NAME " == null) "
1298                  RS_TYPE_ITEM_BUFFER_NAME " = "
1299                    "new " RS_TYPE_ITEM_CLASS_NAME
1300                      "[getType().getX() /* count */];"
1301             << std::endl;
1302  if (Index != NULL)
1303    C.indent() << "if ("RS_TYPE_ITEM_BUFFER_NAME"[" << Index << "] == null) "
1304                    RS_TYPE_ITEM_BUFFER_NAME"[" << Index << "] = "
1305                      "new "RS_TYPE_ITEM_CLASS_NAME"();" << std::endl;
1306  return;
1307}
1308
1309void RSReflection::genNewItemBufferPackerIfNull(Context &C) {
1310  C.indent() << "if (" RS_TYPE_ITEM_BUFFER_PACKER_NAME " == null) "
1311                  RS_TYPE_ITEM_BUFFER_PACKER_NAME " = "
1312                    "new FieldPacker(" RS_TYPE_ITEM_CLASS_NAME
1313                      ".sizeof * getType().getX()/* count */"
1314                        ");" << std::endl;
1315  return;
1316}
1317
1318/********************** Methods to generate type class  **********************/
1319bool RSReflection::genTypeClass(Context &C,
1320                                const RSExportRecordType *ERT,
1321                                std::string &ErrorMsg) {
1322  std::string ClassName = ERT->getElementName();
1323  std::string superClassName = C.getRSPackageName();
1324  superClassName += RS_TYPE_CLASS_SUPER_CLASS_NAME;
1325
1326  if (!C.startClass(Context::AM_Public,
1327                    false,
1328                    ClassName,
1329                    superClassName.c_str(),
1330                    ErrorMsg))
1331    return false;
1332
1333  mGeneratedFileNames->push_back(ClassName);
1334
1335  genTypeItemClass(C, ERT);
1336
1337  // Declare item buffer and item buffer packer
1338  C.indent() << "private "RS_TYPE_ITEM_CLASS_NAME" "RS_TYPE_ITEM_BUFFER_NAME"[]"
1339      ";" << std::endl;
1340  C.indent() << "private FieldPacker "RS_TYPE_ITEM_BUFFER_PACKER_NAME";"
1341             << std::endl;
1342  C.indent() << "private static java.lang.ref.WeakReference<Element> "
1343             RS_TYPE_ELEMENT_REF_NAME
1344             " = new java.lang.ref.WeakReference<Element>(null);" << std::endl;
1345
1346  genTypeClassConstructor(C, ERT);
1347  genTypeClassCopyToArrayLocal(C, ERT);
1348  genTypeClassCopyToArray(C, ERT);
1349  genTypeClassItemSetter(C, ERT);
1350  genTypeClassItemGetter(C, ERT);
1351  genTypeClassComponentSetter(C, ERT);
1352  genTypeClassComponentGetter(C, ERT);
1353  genTypeClassCopyAll(C, ERT);
1354  genTypeClassResize(C);
1355
1356  C.endClass();
1357
1358  C.resetFieldIndex();
1359  C.clearFieldIndexMap();
1360
1361  return true;
1362}
1363
1364void RSReflection::genTypeItemClass(Context &C,
1365                                    const RSExportRecordType *ERT) {
1366  C.indent() << "static public class "RS_TYPE_ITEM_CLASS_NAME;
1367  C.startBlock();
1368
1369  C.indent() << "public static final int sizeof = "
1370             << RSExportType::GetTypeAllocSize(ERT) << ";" << std::endl;
1371
1372  // Member elements
1373  C.out() << std::endl;
1374  for (RSExportRecordType::const_field_iterator FI = ERT->fields_begin(),
1375           FE = ERT->fields_end();
1376       FI != FE;
1377       FI++) {
1378    C.indent() << GetTypeName((*FI)->getType()) << " " << (*FI)->getName()
1379               << ";" << std::endl;
1380  }
1381
1382  // Constructor
1383  C.out() << std::endl;
1384  C.indent() << RS_TYPE_ITEM_CLASS_NAME"()";
1385  C.startBlock();
1386
1387  for (RSExportRecordType::const_field_iterator FI = ERT->fields_begin(),
1388           FE = ERT->fields_end();
1389       FI != FE;
1390       FI++) {
1391    const RSExportRecordType::Field *F = *FI;
1392    genAllocateVarOfType(C, F->getType(), F->getName());
1393  }
1394
1395  // end Constructor
1396  C.endBlock();
1397
1398  // end Item class
1399  C.endBlock();
1400
1401  return;
1402}
1403
1404void RSReflection::genTypeClassConstructor(Context &C,
1405                                           const RSExportRecordType *ERT) {
1406  const char *RenderScriptVar = "rs";
1407
1408  C.startFunction(Context::AM_Public,
1409                  true,
1410                  "Element",
1411                  "createElement",
1412                  1,
1413                  "RenderScript", RenderScriptVar);
1414
1415  // TODO(all): Fix weak-refs + multi-context issue.
1416  // C.indent() << "Element e = " << RS_TYPE_ELEMENT_REF_NAME
1417  //            << ".get();" << std::endl;
1418  // C.indent() << "if (e != null) return e;" << std::endl;
1419  genBuildElement(C, "eb", ERT, RenderScriptVar, /* IsInline = */true);
1420  C.indent() << "return eb.create();" << std::endl;
1421  // C.indent() << "e = eb.create();" << std::endl;
1422  // C.indent() << RS_TYPE_ELEMENT_REF_NAME
1423  //            << " = new java.lang.ref.WeakReference<Element>(e);"
1424  //            << std::endl;
1425  // C.indent() << "return e;" << std::endl;
1426  C.endFunction();
1427
1428
1429  // private with element
1430  C.startFunction(Context::AM_Private,
1431                  false,
1432                  NULL,
1433                  C.getClassName(),
1434                  1,
1435                  "RenderScript", RenderScriptVar);
1436  C.indent() << RS_TYPE_ITEM_BUFFER_NAME" = null;" << std::endl;
1437  C.indent() << RS_TYPE_ITEM_BUFFER_PACKER_NAME" = null;" << std::endl;
1438  C.indent() << "mElement = createElement(" << RenderScriptVar << ");"
1439             << std::endl;
1440  C.endFunction();
1441
1442  // 1D without usage
1443  C.startFunction(Context::AM_Public,
1444                  false,
1445                  NULL,
1446                  C.getClassName(),
1447                  2,
1448                  "RenderScript", RenderScriptVar,
1449                  "int", "count");
1450
1451  C.indent() << RS_TYPE_ITEM_BUFFER_NAME" = null;" << std::endl;
1452  C.indent() << RS_TYPE_ITEM_BUFFER_PACKER_NAME" = null;" << std::endl;
1453  C.indent() << "mElement = createElement(" << RenderScriptVar << ");"
1454             << std::endl;
1455  // Call init() in super class
1456  C.indent() << "init(" << RenderScriptVar << ", count);" << std::endl;
1457  C.endFunction();
1458
1459  // 1D with usage
1460  C.startFunction(Context::AM_Public,
1461                  false,
1462                  NULL,
1463                  C.getClassName(),
1464                  3,
1465                  "RenderScript", RenderScriptVar,
1466                  "int", "count",
1467                  "int", "usages");
1468
1469  C.indent() << RS_TYPE_ITEM_BUFFER_NAME" = null;" << std::endl;
1470  C.indent() << RS_TYPE_ITEM_BUFFER_PACKER_NAME" = null;" << std::endl;
1471  C.indent() << "mElement = createElement(" << RenderScriptVar << ");"
1472             << std::endl;
1473  // Call init() in super class
1474  C.indent() << "init(" << RenderScriptVar << ", count, usages);" << std::endl;
1475  C.endFunction();
1476
1477
1478  // create1D with usage
1479  C.startFunction(Context::AM_Public,
1480                  true,
1481                  C.getClassName().c_str(),
1482                  "create1D",
1483                  3,
1484                  "RenderScript", RenderScriptVar,
1485                  "int", "dimX",
1486                  "int", "usages");
1487  C.indent() << C.getClassName() << " obj = new " << C.getClassName() << "("
1488             << RenderScriptVar << ");" << std::endl;
1489  C.indent() << "obj.mAllocation = Allocation.createSized("
1490                "rs, obj.mElement, dimX, usages);" << std::endl;
1491  C.indent() << "return obj;" << std::endl;
1492  C.endFunction();
1493
1494  // create1D without usage
1495  C.startFunction(Context::AM_Public,
1496                  true,
1497                  C.getClassName().c_str(),
1498                  "create1D",
1499                  2,
1500                  "RenderScript", RenderScriptVar,
1501                  "int", "dimX");
1502  C.indent() << "return create1D(" << RenderScriptVar
1503             << ", dimX, Allocation.USAGE_SCRIPT);" << std::endl;
1504  C.endFunction();
1505
1506
1507  // create2D without usage
1508  C.startFunction(Context::AM_Public,
1509                  true,
1510                  C.getClassName().c_str(),
1511                  "create2D",
1512                  3,
1513                  "RenderScript", RenderScriptVar,
1514                  "int", "dimX",
1515                  "int", "dimY");
1516  C.indent() << "return create2D(" << RenderScriptVar
1517             << ", dimX, dimY, Allocation.USAGE_SCRIPT);" << std::endl;
1518  C.endFunction();
1519
1520  // create2D with usage
1521  C.startFunction(Context::AM_Public,
1522                  true,
1523                  C.getClassName().c_str(),
1524                  "create2D",
1525                  4,
1526                  "RenderScript", RenderScriptVar,
1527                  "int", "dimX",
1528                  "int", "dimY",
1529                  "int", "usages");
1530
1531  C.indent() << C.getClassName() << " obj = new " << C.getClassName() << "("
1532             << RenderScriptVar << ");" << std::endl;
1533  C.indent() << "Type.Builder b = new Type.Builder(rs, obj.mElement);"
1534             << std::endl;
1535  C.indent() << "b.setX(dimX);" << std::endl;
1536  C.indent() << "b.setY(dimY);" << std::endl;
1537  C.indent() << "Type t = b.create();" << std::endl;
1538  C.indent() << "obj.mAllocation = Allocation.createTyped(rs, t, usages);"
1539             << std::endl;
1540  C.indent() << "return obj;" << std::endl;
1541  C.endFunction();
1542
1543
1544  // createTypeBuilder
1545  C.startFunction(Context::AM_Public,
1546                  true,
1547                  "Type.Builder",
1548                  "createTypeBuilder",
1549                  1,
1550                  "RenderScript", RenderScriptVar);
1551  C.indent() << "Element e = createElement(" << RenderScriptVar << ");"
1552             << std::endl;
1553  C.indent() << "return new Type.Builder(rs, e);" << std::endl;
1554  C.endFunction();
1555
1556  // createCustom with usage
1557  C.startFunction(Context::AM_Public,
1558                  true,
1559                  C.getClassName().c_str(),
1560                  "createCustom",
1561                  3,
1562                  "RenderScript", RenderScriptVar,
1563                  "Type.Builder", "tb",
1564                  "int", "usages");
1565  C.indent() << C.getClassName() << " obj = new " << C.getClassName() << "("
1566             << RenderScriptVar << ");" << std::endl;
1567  C.indent() << "Type t = tb.create();" << std::endl;
1568  C.indent() << "if (t.getElement() != obj.mElement) {" << std::endl;
1569  C.indent() << "    throw new RSIllegalArgumentException("
1570                "\"Type.Builder did not match expected element type.\");"
1571             << std::endl;
1572  C.indent() << "}" << std::endl;
1573  C.indent() << "obj.mAllocation = Allocation.createTyped(rs, t, usages);"
1574             << std::endl;
1575  C.indent() << "return obj;" << std::endl;
1576  C.endFunction();
1577}
1578
1579
1580void RSReflection::genTypeClassCopyToArray(Context &C,
1581                                           const RSExportRecordType *ERT) {
1582  C.startFunction(Context::AM_Private,
1583                  false,
1584                  "void",
1585                  "copyToArray",
1586                  2,
1587                  RS_TYPE_ITEM_CLASS_NAME, "i",
1588                  "int", "index");
1589
1590  genNewItemBufferPackerIfNull(C);
1591  C.indent() << RS_TYPE_ITEM_BUFFER_PACKER_NAME
1592                ".reset(index * "RS_TYPE_ITEM_CLASS_NAME".sizeof);"
1593             << std::endl;
1594
1595  C.indent() << "copyToArrayLocal(i, " RS_TYPE_ITEM_BUFFER_PACKER_NAME
1596                ");" << std::endl;
1597
1598  C.endFunction();
1599  return;
1600}
1601
1602void RSReflection::genTypeClassCopyToArrayLocal(Context &C,
1603                                                const RSExportRecordType *ERT) {
1604  C.startFunction(Context::AM_Private,
1605                  false,
1606                  "void",
1607                  "copyToArrayLocal",
1608                  2,
1609                  RS_TYPE_ITEM_CLASS_NAME, "i",
1610                  "FieldPacker", "fp");
1611
1612  genPackVarOfType(C, ERT, "i", "fp");
1613
1614  C.endFunction();
1615  return;
1616}
1617
1618void RSReflection::genTypeClassItemSetter(Context &C,
1619                                          const RSExportRecordType *ERT) {
1620  C.startFunction(Context::AM_PublicSynchronized,
1621                  false,
1622                  "void",
1623                  "set",
1624                  3,
1625                  RS_TYPE_ITEM_CLASS_NAME, "i",
1626                  "int", "index",
1627                  "boolean", "copyNow");
1628  genNewItemBufferIfNull(C, NULL);
1629  C.indent() << RS_TYPE_ITEM_BUFFER_NAME"[index] = i;" << std::endl;
1630
1631  C.indent() << "if (copyNow) ";
1632  C.startBlock();
1633
1634  C.indent() << "copyToArray(i, index);" << std::endl;
1635  C.indent() << "FieldPacker fp = new FieldPacker(" RS_TYPE_ITEM_CLASS_NAME
1636                ".sizeof);" << std::endl;
1637  C.indent() << "copyToArrayLocal(i, fp);" << std::endl;
1638  C.indent() << "mAllocation.setFromFieldPacker(index, fp);" << std::endl;
1639
1640  // End of if (copyNow)
1641  C.endBlock();
1642
1643  C.endFunction();
1644  return;
1645}
1646
1647void RSReflection::genTypeClassItemGetter(Context &C,
1648                                          const RSExportRecordType *ERT) {
1649  C.startFunction(Context::AM_PublicSynchronized,
1650                  false,
1651                  RS_TYPE_ITEM_CLASS_NAME,
1652                  "get",
1653                  1,
1654                  "int", "index");
1655  C.indent() << "if ("RS_TYPE_ITEM_BUFFER_NAME" == null) return null;"
1656             << std::endl;
1657  C.indent() << "return "RS_TYPE_ITEM_BUFFER_NAME"[index];" << std::endl;
1658  C.endFunction();
1659  return;
1660}
1661
1662void RSReflection::genTypeClassComponentSetter(Context &C,
1663                                               const RSExportRecordType *ERT) {
1664  for (RSExportRecordType::const_field_iterator FI = ERT->fields_begin(),
1665           FE = ERT->fields_end();
1666       FI != FE;
1667       FI++) {
1668    const RSExportRecordType::Field *F = *FI;
1669    size_t FieldOffset = F->getOffsetInParent();
1670    size_t FieldStoreSize = RSExportType::GetTypeStoreSize(F->getType());
1671    unsigned FieldIndex = C.getFieldIndex(F);
1672
1673    C.startFunction(Context::AM_PublicSynchronized,
1674                    false,
1675                    "void",
1676                    "set_" + F->getName(), 3,
1677                    "int", "index",
1678                    GetTypeName(F->getType()).c_str(), "v",
1679                    "boolean", "copyNow");
1680    genNewItemBufferPackerIfNull(C);
1681    genNewItemBufferIfNull(C, "index");
1682    C.indent() << RS_TYPE_ITEM_BUFFER_NAME"[index]." << F->getName()
1683               << " = v;" << std::endl;
1684
1685    C.indent() << "if (copyNow) ";
1686    C.startBlock();
1687
1688    if (FieldOffset > 0)
1689      C.indent() << RS_TYPE_ITEM_BUFFER_PACKER_NAME
1690                    ".reset(index * "RS_TYPE_ITEM_CLASS_NAME".sizeof + "
1691                 << FieldOffset << ");" << std::endl;
1692    else
1693      C.indent() << RS_TYPE_ITEM_BUFFER_PACKER_NAME
1694                    ".reset(index * "RS_TYPE_ITEM_CLASS_NAME".sizeof);"
1695                 << std::endl;
1696    genPackVarOfType(C, F->getType(), "v", RS_TYPE_ITEM_BUFFER_PACKER_NAME);
1697
1698    C.indent() << "FieldPacker fp = new FieldPacker(" << FieldStoreSize << ");"
1699               << std::endl;
1700    genPackVarOfType(C, F->getType(), "v", "fp");
1701    C.indent() << "mAllocation.setFromFieldPacker(index, " << FieldIndex
1702               << ", fp);"
1703               << std::endl;
1704
1705    // End of if (copyNow)
1706    C.endBlock();
1707
1708    C.endFunction();
1709  }
1710  return;
1711}
1712
1713void RSReflection::genTypeClassComponentGetter(Context &C,
1714                                               const RSExportRecordType *ERT) {
1715  for (RSExportRecordType::const_field_iterator FI = ERT->fields_begin(),
1716           FE = ERT->fields_end();
1717       FI != FE;
1718       FI++) {
1719    const RSExportRecordType::Field *F = *FI;
1720    C.startFunction(Context::AM_PublicSynchronized,
1721                    false,
1722                    GetTypeName(F->getType()).c_str(),
1723                    "get_" + F->getName(),
1724                    1,
1725                    "int", "index");
1726    C.indent() << "if ("RS_TYPE_ITEM_BUFFER_NAME" == null) return "
1727               << GetTypeNullValue(F->getType()) << ";" << std::endl;
1728    C.indent() << "return "RS_TYPE_ITEM_BUFFER_NAME"[index]." << F->getName()
1729               << ";" << std::endl;
1730    C.endFunction();
1731  }
1732  return;
1733}
1734
1735void RSReflection::genTypeClassCopyAll(Context &C,
1736                                       const RSExportRecordType *ERT) {
1737  C.startFunction(Context::AM_PublicSynchronized, false, "void", "copyAll", 0);
1738
1739  C.indent() << "for (int ct = 0; ct < "RS_TYPE_ITEM_BUFFER_NAME".length; ct++)"
1740                  " copyToArray("RS_TYPE_ITEM_BUFFER_NAME"[ct], ct);"
1741             << std::endl;
1742  C.indent() << "mAllocation.setFromFieldPacker(0, "
1743                  RS_TYPE_ITEM_BUFFER_PACKER_NAME");"
1744             << std::endl;
1745
1746  C.endFunction();
1747  return;
1748}
1749
1750void RSReflection::genTypeClassResize(Context &C) {
1751  C.startFunction(Context::AM_PublicSynchronized,
1752                  false,
1753                  "void",
1754                  "resize",
1755                  1,
1756                  "int", "newSize");
1757
1758  C.indent() << "if (mItemArray != null) ";
1759  C.startBlock();
1760  C.indent() << "int oldSize = mItemArray.length;" << std::endl;
1761  C.indent() << "int copySize = Math.min(oldSize, newSize);" << std::endl;
1762  C.indent() << "if (newSize == oldSize) return;" << std::endl;
1763  C.indent() << "Item ni[] = new Item[newSize];" << std::endl;
1764  C.indent() << "System.arraycopy(mItemArray, 0, ni, 0, copySize);"
1765             << std::endl;
1766  C.indent() << "mItemArray = ni;" << std::endl;
1767  C.endBlock();
1768  C.indent() << "mAllocation.resize(newSize);" << std::endl;
1769
1770  C.indent() << "if (" RS_TYPE_ITEM_BUFFER_PACKER_NAME " != null) "
1771                  RS_TYPE_ITEM_BUFFER_PACKER_NAME " = "
1772                    "new FieldPacker(" RS_TYPE_ITEM_CLASS_NAME
1773                      ".sizeof * getType().getX()/* count */"
1774                        ");" << std::endl;
1775
1776  C.endFunction();
1777  return;
1778}
1779
1780/******************** Methods to generate type class /end ********************/
1781
1782/********** Methods to create Element in Java of given record type ***********/
1783void RSReflection::genBuildElement(Context &C,
1784                                   const char *ElementBuilderName,
1785                                   const RSExportRecordType *ERT,
1786                                   const char *RenderScriptVar,
1787                                   bool IsInline) {
1788  C.indent() << "Element.Builder " << ElementBuilderName << " = "
1789      "new Element.Builder(" << RenderScriptVar << ");" << std::endl;
1790
1791  // eb.add(...)
1792  genAddElementToElementBuilder(C,
1793                                ERT,
1794                                "",
1795                                ElementBuilderName,
1796                                RenderScriptVar,
1797                                /* ArraySize = */0);
1798
1799  if (!IsInline)
1800    C.indent() << "return " << ElementBuilderName << ".create();" << std::endl;
1801  return;
1802}
1803
1804#define EB_ADD(x) do {                                              \
1805  C.indent() << ElementBuilderName                                  \
1806             << ".add(" << x << ", \"" << VarName << "\"";  \
1807  if (ArraySize > 0)                                                \
1808    C.out() << ", " << ArraySize;                                   \
1809  C.out() << ");" << std::endl;                                     \
1810  C.incFieldIndex();                                                \
1811} while (false)
1812
1813void RSReflection::genAddElementToElementBuilder(Context &C,
1814                                                 const RSExportType *ET,
1815                                                 const std::string &VarName,
1816                                                 const char *ElementBuilderName,
1817                                                 const char *RenderScriptVar,
1818                                                 unsigned ArraySize) {
1819  std::string ElementConstruct = GetBuiltinElementConstruct(ET);
1820
1821  if (ElementConstruct != "") {
1822    EB_ADD(ElementConstruct << "(" << RenderScriptVar << ")");
1823  } else {
1824    if ((ET->getClass() == RSExportType::ExportClassPrimitive) ||
1825        (ET->getClass() == RSExportType::ExportClassVector)) {
1826      const RSExportPrimitiveType *EPT =
1827          static_cast<const RSExportPrimitiveType*>(ET);
1828      const char *DataTypeName =
1829          RSExportPrimitiveType::getRSReflectionType(EPT)->rs_type;
1830      int Size = (ET->getClass() == RSExportType::ExportClassVector) ?
1831          static_cast<const RSExportVectorType*>(ET)->getNumElement() :
1832          1;
1833
1834      if (EPT->getClass() == RSExportType::ExportClassPrimitive) {
1835        // Element.createUser()
1836        EB_ADD("Element.createUser(" << RenderScriptVar
1837                                     << ", Element.DataType."
1838                                     << DataTypeName << ")");
1839      } else {
1840        slangAssert((ET->getClass() == RSExportType::ExportClassVector) &&
1841                    "Unexpected type.");
1842        EB_ADD("Element.createVector(" << RenderScriptVar
1843                                       << ", Element.DataType."
1844                                       << DataTypeName << ", "
1845                                       << Size << ")");
1846      }
1847#ifndef NDEBUG
1848    } else if (ET->getClass() == RSExportType::ExportClassPointer) {
1849      // Pointer type variable should be resolved in
1850      // GetBuiltinElementConstruct()
1851      slangAssert(false && "??");
1852    } else if (ET->getClass() == RSExportType::ExportClassMatrix) {
1853      // Matrix type variable should be resolved
1854      // in GetBuiltinElementConstruct()
1855      slangAssert(false && "??");
1856#endif
1857    } else if (ET->getClass() == RSExportType::ExportClassConstantArray) {
1858      const RSExportConstantArrayType *ECAT =
1859          static_cast<const RSExportConstantArrayType *>(ET);
1860
1861      const RSExportType *ElementType = ECAT->getElementType();
1862      if (ElementType->getClass() != RSExportType::ExportClassRecord) {
1863        genAddElementToElementBuilder(C,
1864                                      ECAT->getElementType(),
1865                                      VarName,
1866                                      ElementBuilderName,
1867                                      RenderScriptVar,
1868                                      ECAT->getSize());
1869      } else {
1870        std::string NewElementBuilderName(ElementBuilderName);
1871        NewElementBuilderName.append(1, '_');
1872
1873        genBuildElement(C,
1874                        NewElementBuilderName.c_str(),
1875                        static_cast<const RSExportRecordType*>(ElementType),
1876                        RenderScriptVar,
1877                        /* IsInline = */true);
1878        ArraySize = ECAT->getSize();
1879        EB_ADD(NewElementBuilderName << ".create()");
1880      }
1881    } else if (ET->getClass() == RSExportType::ExportClassRecord) {
1882      // Simalar to case of RSExportType::ExportClassRecord in genPackVarOfType.
1883      //
1884      // TODO(zonr): Generalize these two function such that there's no
1885      //             duplicated codes.
1886      const RSExportRecordType *ERT =
1887          static_cast<const RSExportRecordType*>(ET);
1888      int Pos = 0;    // relative pos from now on
1889
1890      for (RSExportRecordType::const_field_iterator I = ERT->fields_begin(),
1891               E = ERT->fields_end();
1892           I != E;
1893           I++) {
1894        const RSExportRecordType::Field *F = *I;
1895        std::string FieldName;
1896        int FieldOffset = F->getOffsetInParent();
1897        int FieldStoreSize = RSExportType::GetTypeStoreSize(F->getType());
1898        int FieldAllocSize = RSExportType::GetTypeAllocSize(F->getType());
1899
1900        if (!VarName.empty())
1901          FieldName = VarName + "." + F->getName();
1902        else
1903          FieldName = F->getName();
1904
1905        // Alignment
1906        genAddPaddingToElementBuiler(C,
1907                                     (FieldOffset - Pos),
1908                                     ElementBuilderName,
1909                                     RenderScriptVar);
1910
1911        // eb.add(...)
1912        C.addFieldIndexMapping(F);
1913        if (F->getType()->getClass() != RSExportType::ExportClassRecord) {
1914          genAddElementToElementBuilder(C,
1915                                        F->getType(),
1916                                        FieldName,
1917                                        ElementBuilderName,
1918                                        RenderScriptVar,
1919                                        0);
1920        } else {
1921          std::string NewElementBuilderName(ElementBuilderName);
1922          NewElementBuilderName.append(1, '_');
1923
1924          genBuildElement(C,
1925                          NewElementBuilderName.c_str(),
1926                          static_cast<const RSExportRecordType*>(F->getType()),
1927                          RenderScriptVar,
1928                          /* IsInline = */true);
1929
1930          const std::string &VarName = FieldName;  // Hack for EB_ADD macro
1931          EB_ADD(NewElementBuilderName << ".create()");
1932        }
1933
1934        if (mRSContext->getTargetAPI() < SLANG_ICS_TARGET_API) {
1935          // There is padding within the field type. This is only necessary
1936          // for HC-targeted APIs.
1937          genAddPaddingToElementBuiler(C,
1938                                       (FieldAllocSize - FieldStoreSize),
1939                                       ElementBuilderName,
1940                                       RenderScriptVar);
1941        }
1942
1943        Pos = FieldOffset + FieldAllocSize;
1944      }
1945
1946      // There maybe some padding after the struct
1947      size_t RecordAllocSize = RSExportType::GetTypeAllocSize(ERT);
1948
1949      genAddPaddingToElementBuiler(C,
1950                                   RecordAllocSize - Pos,
1951                                   ElementBuilderName,
1952                                   RenderScriptVar);
1953    } else {
1954      slangAssert(false && "Unknown class of type");
1955    }
1956  }
1957}
1958
1959void RSReflection::genAddPaddingToElementBuiler(Context &C,
1960                                                int PaddingSize,
1961                                                const char *ElementBuilderName,
1962                                                const char *RenderScriptVar) {
1963  unsigned ArraySize = 0;   // Hack the EB_ADD macro
1964  while (PaddingSize > 0) {
1965    const std::string &VarName = C.createPaddingField();
1966    if (PaddingSize >= 4) {
1967      EB_ADD("Element.U32(" << RenderScriptVar << ")");
1968      PaddingSize -= 4;
1969    } else if (PaddingSize >= 2) {
1970      EB_ADD("Element.U16(" << RenderScriptVar << ")");
1971      PaddingSize -= 2;
1972    } else if (PaddingSize >= 1) {
1973      EB_ADD("Element.U8(" << RenderScriptVar << ")");
1974      PaddingSize -= 1;
1975    }
1976  }
1977  return;
1978}
1979
1980#undef EB_ADD
1981/******** Methods to create Element in Java of given record type /end ********/
1982
1983bool RSReflection::reflect(const std::string &OutputPathBase,
1984                           const std::string &OutputPackageName,
1985                           const std::string &RSPackageName,
1986                           const std::string &InputFileName,
1987                           const std::string &OutputBCFileName) {
1988  Context *C = NULL;
1989  std::string ResourceId = "";
1990  std::string PaddingPrefix = "";
1991
1992  if (mRSContext->getTargetAPI() < SLANG_ICS_TARGET_API) {
1993    PaddingPrefix = "#padding_";
1994  } else {
1995    PaddingPrefix = "#rs_padding_";
1996  }
1997
1998  if (!GetClassNameFromFileName(OutputBCFileName, ResourceId))
1999    return false;
2000
2001  if (ResourceId.empty())
2002    ResourceId = "<Resource ID>";
2003
2004  if (OutputPackageName.empty() || OutputPackageName == "-")
2005    C = new Context(OutputPathBase, InputFileName, "<Package Name>",
2006                    RSPackageName, ResourceId, PaddingPrefix, true);
2007  else
2008    C = new Context(OutputPathBase, InputFileName, OutputPackageName,
2009                    RSPackageName, ResourceId, PaddingPrefix, false);
2010
2011  if (C != NULL) {
2012    std::string ErrorMsg, ScriptClassName;
2013    // class ScriptC_<ScriptName>
2014    if (!GetClassNameFromFileName(InputFileName, ScriptClassName))
2015      return false;
2016
2017    if (ScriptClassName.empty())
2018      ScriptClassName = "<Input Script Name>";
2019
2020    ScriptClassName.insert(0, RS_SCRIPT_CLASS_NAME_PREFIX);
2021
2022    if (mRSContext->getLicenseNote() != NULL) {
2023      C->setLicenseNote(*(mRSContext->getLicenseNote()));
2024    }
2025
2026    if (!genScriptClass(*C, ScriptClassName, ErrorMsg)) {
2027      std::cerr << "Failed to generate class " << ScriptClassName << " ("
2028                << ErrorMsg << ")" << std::endl;
2029      return false;
2030    }
2031
2032    mGeneratedFileNames->push_back(ScriptClassName);
2033
2034    // class ScriptField_<TypeName>
2035    for (RSContext::const_export_type_iterator TI =
2036             mRSContext->export_types_begin(),
2037             TE = mRSContext->export_types_end();
2038         TI != TE;
2039         TI++) {
2040      const RSExportType *ET = TI->getValue();
2041
2042      if (ET->getClass() == RSExportType::ExportClassRecord) {
2043        const RSExportRecordType *ERT =
2044            static_cast<const RSExportRecordType*>(ET);
2045
2046        if (!ERT->isArtificial() && !genTypeClass(*C, ERT, ErrorMsg)) {
2047          std::cerr << "Failed to generate type class for struct '"
2048                    << ERT->getName() << "' (" << ErrorMsg << ")" << std::endl;
2049          return false;
2050        }
2051      }
2052    }
2053  }
2054
2055  return true;
2056}
2057
2058/************************** RSReflection::Context **************************/
2059const char *const RSReflection::Context::ApacheLicenseNote =
2060    "/*\n"
2061    " * Copyright (C) 2011-2012 The Android Open Source Project\n"
2062    " *\n"
2063    " * Licensed under the Apache License, Version 2.0 (the \"License\");\n"
2064    " * you may not use this file except in compliance with the License.\n"
2065    " * You may obtain a copy of the License at\n"
2066    " *\n"
2067    " *      http://www.apache.org/licenses/LICENSE-2.0\n"
2068    " *\n"
2069    " * Unless required by applicable law or agreed to in writing, software\n"
2070    " * distributed under the License is distributed on an \"AS IS\" BASIS,\n"
2071    " * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or "
2072    "implied.\n"
2073    " * See the License for the specific language governing permissions and\n"
2074    " * limitations under the License.\n"
2075    " */\n"
2076    "\n";
2077
2078bool RSReflection::Context::openClassFile(const std::string &ClassName,
2079                                          std::string &ErrorMsg) {
2080  if (!mUseStdout) {
2081    mOF.clear();
2082    std::string Path =
2083        RSSlangReflectUtils::ComputePackagedPath(mOutputPathBase.c_str(),
2084                                                 mPackageName.c_str());
2085
2086    if (!SlangUtils::CreateDirectoryWithParents(Path, &ErrorMsg))
2087      return false;
2088
2089    std::string ClassFile = Path + OS_PATH_SEPARATOR_STR + ClassName + ".java";
2090
2091    mOF.open(ClassFile.c_str());
2092    if (!mOF.good()) {
2093      ErrorMsg = "failed to open file '" + ClassFile + "' for write";
2094      return false;
2095    }
2096  }
2097  return true;
2098}
2099
2100const char *RSReflection::Context::AccessModifierStr(AccessModifier AM) {
2101  switch (AM) {
2102    case AM_Public: return "public"; break;
2103    case AM_Protected: return "protected"; break;
2104    case AM_Private: return "private"; break;
2105    case AM_PublicSynchronized: return "public synchronized"; break;
2106    default: return ""; break;
2107  }
2108}
2109
2110bool RSReflection::Context::startClass(AccessModifier AM,
2111                                       bool IsStatic,
2112                                       const std::string &ClassName,
2113                                       const char *SuperClassName,
2114                                       std::string &ErrorMsg) {
2115  if (mVerbose)
2116    std::cout << "Generating " << ClassName << ".java ..." << std::endl;
2117
2118  // Open file for class
2119  if (!openClassFile(ClassName, ErrorMsg))
2120    return false;
2121
2122  // License
2123  out() << mLicenseNote;
2124
2125  // Notice of generated file
2126  out() << "/*" << std::endl;
2127  out() << " * This file is auto-generated. DO NOT MODIFY!" << std::endl;
2128  out() << " * The source Renderscript file: " << mInputRSFile << std::endl;
2129  out() << " */" << std::endl;
2130
2131  // Package
2132  if (!mPackageName.empty())
2133    out() << "package " << mPackageName << ";" << std::endl;
2134  out() << std::endl;
2135
2136  // Imports
2137  out() << "import " << mRSPackageName << ".*;" << std::endl;
2138  out() << "import android.content.res.Resources;" << std::endl;
2139  out() << std::endl;
2140
2141  // All reflected classes should be annotated as hidden, so that they won't
2142  // be exposed in SDK.
2143  out() << "/**" << std::endl;
2144  out() << " * @hide" << std::endl;
2145  out() << " */" << std::endl;
2146
2147  out() << AccessModifierStr(AM) << ((IsStatic) ? " static" : "") << " class "
2148        << ClassName;
2149  if (SuperClassName != NULL)
2150    out() << " extends " << SuperClassName;
2151
2152  startBlock();
2153
2154  mClassName = ClassName;
2155
2156  return true;
2157}
2158
2159void RSReflection::Context::endClass() {
2160  endBlock();
2161  if (!mUseStdout)
2162    mOF.close();
2163  clear();
2164  return;
2165}
2166
2167void RSReflection::Context::startBlock(bool ShouldIndent) {
2168  if (ShouldIndent)
2169    indent() << "{" << std::endl;
2170  else
2171    out() << " {" << std::endl;
2172  incIndentLevel();
2173  return;
2174}
2175
2176void RSReflection::Context::endBlock() {
2177  decIndentLevel();
2178  indent() << "}" << std::endl << std::endl;
2179  return;
2180}
2181
2182void RSReflection::Context::startTypeClass(const std::string &ClassName) {
2183  indent() << "public static class " << ClassName;
2184  startBlock();
2185  return;
2186}
2187
2188void RSReflection::Context::endTypeClass() {
2189  endBlock();
2190  return;
2191}
2192
2193void RSReflection::Context::startFunction(AccessModifier AM,
2194                                          bool IsStatic,
2195                                          const char *ReturnType,
2196                                          const std::string &FunctionName,
2197                                          int Argc, ...) {
2198  ArgTy Args;
2199  va_list vl;
2200  va_start(vl, Argc);
2201
2202  for (int i = 0; i < Argc; i++) {
2203    const char *ArgType = va_arg(vl, const char*);
2204    const char *ArgName = va_arg(vl, const char*);
2205
2206    Args.push_back(std::make_pair(ArgType, ArgName));
2207  }
2208  va_end(vl);
2209
2210  startFunction(AM, IsStatic, ReturnType, FunctionName, Args);
2211
2212  return;
2213}
2214
2215void RSReflection::Context::startFunction(AccessModifier AM,
2216                                          bool IsStatic,
2217                                          const char *ReturnType,
2218                                          const std::string &FunctionName,
2219                                          const ArgTy &Args) {
2220  indent() << AccessModifierStr(AM) << ((IsStatic) ? " static " : " ")
2221           << ((ReturnType) ? ReturnType : "") << " " << FunctionName << "(";
2222
2223  bool FirstArg = true;
2224  for (ArgTy::const_iterator I = Args.begin(), E = Args.end();
2225       I != E;
2226       I++) {
2227    if (!FirstArg)
2228      out() << ", ";
2229    else
2230      FirstArg = false;
2231
2232    out() << I->first << " " << I->second;
2233  }
2234
2235  out() << ")";
2236  startBlock();
2237
2238  return;
2239}
2240
2241void RSReflection::Context::endFunction() {
2242  endBlock();
2243  return;
2244}
2245
2246bool RSReflection::Context::addTypeNameForElement(
2247    const std::string &TypeName) {
2248  if (mTypesToCheck.find(TypeName) == mTypesToCheck.end()) {
2249    mTypesToCheck.insert(TypeName);
2250    return true;
2251  } else {
2252    return false;
2253  }
2254}
2255
2256bool RSReflection::Context::addTypeNameForFieldPacker(
2257    const std::string &TypeName) {
2258  if (mFieldPackerTypes.find(TypeName) == mFieldPackerTypes.end()) {
2259    mFieldPackerTypes.insert(TypeName);
2260    return true;
2261  } else {
2262    return false;
2263  }
2264}
2265
2266}  // namespace slang
2267