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//
// Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
#ifndef COMPILER_TRANSLATOR_TYPES_H_
#define COMPILER_TRANSLATOR_TYPES_H_
#include "common/angleutils.h"
#include "common/debug.h"
#include "compiler/translator/BaseTypes.h"
#include "compiler/translator/Common.h"
struct TPublicType;
class TType;
class TSymbol;
class TIntermSymbol;
class TField : angle::NonCopyable
{
public:
POOL_ALLOCATOR_NEW_DELETE();
TField(TType *type, TString *name, const TSourceLoc &line)
: mType(type),
mName(name),
mLine(line)
{
}
// TODO(alokp): We should only return const type.
// Fix it by tweaking grammar.
TType *type()
{
return mType;
}
const TType *type() const
{
return mType;
}
const TString &name() const
{
return *mName;
}
const TSourceLoc &line() const
{
return mLine;
}
private:
TType *mType;
TString *mName;
TSourceLoc mLine;
};
typedef TVector<TField *> TFieldList;
inline TFieldList *NewPoolTFieldList()
{
void *memory = GetGlobalPoolAllocator()->allocate(sizeof(TFieldList));
return new(memory) TFieldList;
}
class TFieldListCollection : angle::NonCopyable
{
public:
const TString &name() const
{
return *mName;
}
const TFieldList &fields() const
{
return *mFields;
}
size_t objectSize() const
{
if (mObjectSize == 0)
mObjectSize = calculateObjectSize();
return mObjectSize;
};
protected:
TFieldListCollection(const TString *name, TFieldList *fields)
: mName(name),
mFields(fields),
mObjectSize(0)
{
}
TString buildMangledName(const TString &mangledNamePrefix) const;
size_t calculateObjectSize() const;
const TString *mName;
TFieldList *mFields;
mutable TString mMangledName;
mutable size_t mObjectSize;
};
// May also represent interface blocks
class TStructure : public TFieldListCollection
{
public:
POOL_ALLOCATOR_NEW_DELETE();
TStructure(const TString *name, TFieldList *fields)
: TFieldListCollection(name, fields),
mDeepestNesting(0),
mUniqueId(0),
mAtGlobalScope(false)
{
}
int deepestNesting() const
{
if (mDeepestNesting == 0)
mDeepestNesting = calculateDeepestNesting();
return mDeepestNesting;
}
bool containsArrays() const;
bool containsType(TBasicType t) const;
bool containsSamplers() const;
void createSamplerSymbols(const TString &structName,
const TString &structAPIName,
const unsigned int arrayOfStructsSize,
TVector<TIntermSymbol *> *outputSymbols,
TMap<TIntermSymbol *, TString> *outputSymbolsToAPINames) const;
bool equals(const TStructure &other) const;
void setUniqueId(int uniqueId)
{
mUniqueId = uniqueId;
}
int uniqueId() const
{
ASSERT(mUniqueId != 0);
return mUniqueId;
}
void setAtGlobalScope(bool atGlobalScope)
{
mAtGlobalScope = atGlobalScope;
}
bool atGlobalScope() const
{
return mAtGlobalScope;
}
const TString &mangledName() const
{
if (mMangledName.empty())
mMangledName = buildMangledName("struct-");
return mMangledName;
}
private:
// TODO(zmo): Find a way to get rid of the const_cast in function
// setName(). At the moment keep this function private so only
// friend class RegenerateStructNames may call it.
friend class RegenerateStructNames;
void setName(const TString &name)
{
TString *mutableName = const_cast<TString *>(mName);
*mutableName = name;
}
int calculateDeepestNesting() const;
mutable int mDeepestNesting;
int mUniqueId;
bool mAtGlobalScope;
};
class TInterfaceBlock : public TFieldListCollection
{
public:
POOL_ALLOCATOR_NEW_DELETE();
TInterfaceBlock(const TString *name, TFieldList *fields, const TString *instanceName,
int arraySize, const TLayoutQualifier &layoutQualifier)
: TFieldListCollection(name, fields),
mInstanceName(instanceName),
mArraySize(arraySize),
mBlockStorage(layoutQualifier.blockStorage),
mMatrixPacking(layoutQualifier.matrixPacking)
{
}
const TString &instanceName() const
{
return *mInstanceName;
}
bool hasInstanceName() const
{
return mInstanceName != NULL;
}
bool isArray() const
{
return mArraySize > 0;
}
int arraySize() const
{
return mArraySize;
}
TLayoutBlockStorage blockStorage() const
{
return mBlockStorage;
}
TLayoutMatrixPacking matrixPacking() const
{
return mMatrixPacking;
}
const TString &mangledName() const
{
if (mMangledName.empty())
mMangledName = buildMangledName("iblock-");
return mMangledName;
}
private:
const TString *mInstanceName; // for interface block instance names
int mArraySize; // 0 if not an array
TLayoutBlockStorage mBlockStorage;
TLayoutMatrixPacking mMatrixPacking;
};
//
// Base class for things that have a type.
//
class TType
{
public:
POOL_ALLOCATOR_NEW_DELETE();
TType()
: type(EbtVoid), precision(EbpUndefined), qualifier(EvqGlobal), invariant(false),
layoutQualifier(TLayoutQualifier::create()),
primarySize(0), secondarySize(0), array(false), arraySize(0),
interfaceBlock(nullptr), structure(nullptr)
{
}
explicit TType(TBasicType t, unsigned char ps = 1, unsigned char ss = 1)
: type(t),
precision(EbpUndefined),
qualifier(EvqGlobal),
invariant(false),
layoutQualifier(TLayoutQualifier::create()),
primarySize(ps),
secondarySize(ss),
array(false),
arraySize(0),
interfaceBlock(0),
structure(0)
{
}
TType(TBasicType t, TPrecision p, TQualifier q = EvqTemporary,
unsigned char ps = 1, unsigned char ss = 1, bool a = false)
: type(t), precision(p), qualifier(q), invariant(false),
layoutQualifier(TLayoutQualifier::create()),
primarySize(ps), secondarySize(ss), array(a), arraySize(0),
interfaceBlock(0), structure(0)
{
}
explicit TType(const TPublicType &p);
explicit TType(TStructure *userDef, TPrecision p = EbpUndefined)
: type(EbtStruct),
precision(p),
qualifier(EvqTemporary),
invariant(false),
layoutQualifier(TLayoutQualifier::create()),
primarySize(1),
secondarySize(1),
array(false),
arraySize(0),
interfaceBlock(0),
structure(userDef)
{
}
TType(TInterfaceBlock *interfaceBlockIn, TQualifier qualifierIn,
TLayoutQualifier layoutQualifierIn, int arraySizeIn)
: type(EbtInterfaceBlock), precision(EbpUndefined), qualifier(qualifierIn),
invariant(false), layoutQualifier(layoutQualifierIn),
primarySize(1), secondarySize(1), array(arraySizeIn > 0), arraySize(arraySizeIn),
interfaceBlock(interfaceBlockIn), structure(0)
{
}
TType(const TType &) = default;
TType &operator=(const TType &) = default;
TBasicType getBasicType() const
{
return type;
}
void setBasicType(TBasicType t)
{
if (type != t)
{
type = t;
invalidateMangledName();
}
}
TPrecision getPrecision() const
{
return precision;
}
void setPrecision(TPrecision p)
{
precision = p;
}
TQualifier getQualifier() const
{
return qualifier;
}
void setQualifier(TQualifier q)
{
qualifier = q;
}
bool isInvariant() const
{
return invariant;
}
void setInvariant(bool i) { invariant = i; }
TLayoutQualifier getLayoutQualifier() const
{
return layoutQualifier;
}
void setLayoutQualifier(TLayoutQualifier lq)
{
layoutQualifier = lq;
}
int getNominalSize() const
{
return primarySize;
}
int getSecondarySize() const
{
return secondarySize;
}
int getCols() const
{
ASSERT(isMatrix());
return primarySize;
}
int getRows() const
{
ASSERT(isMatrix());
return secondarySize;
}
void setPrimarySize(unsigned char ps)
{
if (primarySize != ps)
{
primarySize = ps;
invalidateMangledName();
}
}
void setSecondarySize(unsigned char ss)
{
if (secondarySize != ss)
{
secondarySize = ss;
invalidateMangledName();
}
}
// Full size of single instance of type
size_t getObjectSize() const;
bool isMatrix() const
{
return primarySize > 1 && secondarySize > 1;
}
bool isNonSquareMatrix() const
{
return isMatrix() && primarySize != secondarySize;
}
bool isArray() const
{
return array;
}
bool isUnsizedArray() const
{
return array && arraySize == 0u;
}
unsigned int getArraySize() const { return arraySize; }
void setArraySize(unsigned int s)
{
if (!array || arraySize != s)
{
array = true;
arraySize = s;
invalidateMangledName();
}
}
void clearArrayness()
{
if (array)
{
array = false;
arraySize = 0u;
invalidateMangledName();
}
}
TInterfaceBlock *getInterfaceBlock() const
{
return interfaceBlock;
}
void setInterfaceBlock(TInterfaceBlock *interfaceBlockIn)
{
if (interfaceBlock != interfaceBlockIn)
{
interfaceBlock = interfaceBlockIn;
invalidateMangledName();
}
}
bool isInterfaceBlock() const
{
return type == EbtInterfaceBlock;
}
bool isVector() const
{
return primarySize > 1 && secondarySize == 1;
}
bool isScalar() const
{
return primarySize == 1 && secondarySize == 1 && !structure;
}
bool isScalarInt() const
{
return isScalar() && (type == EbtInt || type == EbtUInt);
}
TStructure *getStruct() const
{
return structure;
}
void setStruct(TStructure *s)
{
if (structure != s)
{
structure = s;
invalidateMangledName();
}
}
const TString &getMangledName() const
{
if (mangled.empty())
{
mangled = buildMangledName();
mangled += ';';
}
return mangled;
}
bool sameElementType(const TType &right) const
{
return type == right.type &&
primarySize == right.primarySize &&
secondarySize == right.secondarySize &&
structure == right.structure;
}
bool operator==(const TType &right) const
{
return type == right.type &&
primarySize == right.primarySize &&
secondarySize == right.secondarySize &&
array == right.array && (!array || arraySize == right.arraySize) &&
structure == right.structure;
// don't check the qualifier, it's not ever what's being sought after
}
bool operator!=(const TType &right) const
{
return !operator==(right);
}
bool operator<(const TType &right) const
{
if (type != right.type)
return type < right.type;
if (primarySize != right.primarySize)
return primarySize < right.primarySize;
if (secondarySize != right.secondarySize)
return secondarySize < right.secondarySize;
if (array != right.array)
return array < right.array;
if (arraySize != right.arraySize)
return arraySize < right.arraySize;
if (structure != right.structure)
return structure < right.structure;
return false;
}
const char *getBasicString() const
{
return ::getBasicString(type);
}
const char *getPrecisionString() const
{
return ::getPrecisionString(precision);
}
const char *getQualifierString() const
{
return ::getQualifierString(qualifier);
}
const char *getBuiltInTypeNameString() const;
TString getCompleteString() const;
// If this type is a struct, returns the deepest struct nesting of
// any field in the struct. For example:
// struct nesting1 {
// vec4 position;
// };
// struct nesting2 {
// nesting1 field1;
// vec4 field2;
// };
// For type "nesting2", this method would return 2 -- the number
// of structures through which indirection must occur to reach the
// deepest field (nesting2.field1.position).
int getDeepestStructNesting() const
{
return structure ? structure->deepestNesting() : 0;
}
bool isStructureContainingArrays() const
{
return structure ? structure->containsArrays() : false;
}
bool isStructureContainingType(TBasicType t) const
{
return structure ? structure->containsType(t) : false;
}
bool isStructureContainingSamplers() const
{
return structure ? structure->containsSamplers() : false;
}
void createSamplerSymbols(const TString &structName,
const TString &structAPIName,
const unsigned int arrayOfStructsSize,
TVector<TIntermSymbol *> *outputSymbols,
TMap<TIntermSymbol *, TString> *outputSymbolsToAPINames) const
{
ASSERT(structure != nullptr && structure->containsSamplers());
structure->createSamplerSymbols(structName, structAPIName, arrayOfStructsSize,
outputSymbols, outputSymbolsToAPINames);
}
// Initializes all lazily-initialized members.
void realize()
{
getMangledName();
}
private:
void invalidateMangledName() { mangled = ""; }
TString buildMangledName() const;
size_t getStructSize() const;
TBasicType type;
TPrecision precision;
TQualifier qualifier;
bool invariant;
TLayoutQualifier layoutQualifier;
unsigned char primarySize; // size of vector or cols matrix
unsigned char secondarySize; // rows of a matrix
bool array;
unsigned int arraySize;
// 0 unless this is an interface block, or interface block member variable
TInterfaceBlock *interfaceBlock;
// 0 unless this is a struct
TStructure *structure;
mutable TString mangled;
};
//
// This is a workaround for a problem with the yacc stack, It can't have
// types that it thinks have non-trivial constructors. It should
// just be used while recognizing the grammar, not anything else. Pointers
// could be used, but also trying to avoid lots of memory management overhead.
//
// Not as bad as it looks, there is no actual assumption that the fields
// match up or are name the same or anything like that.
//
struct TPublicType
{
TBasicType type;
TLayoutQualifier layoutQualifier;
TQualifier qualifier;
bool invariant;
TPrecision precision;
unsigned char primarySize; // size of vector or cols of matrix
unsigned char secondarySize; // rows of matrix
bool array;
int arraySize;
TType *userDef;
TSourceLoc line;
// true if the type was defined by a struct specifier rather than a reference to a type name.
bool isStructSpecifier;
void setBasic(TBasicType bt, TQualifier q, const TSourceLoc &ln)
{
type = bt;
layoutQualifier = TLayoutQualifier::create();
qualifier = q;
invariant = false;
precision = EbpUndefined;
primarySize = 1;
secondarySize = 1;
array = false;
arraySize = 0;
userDef = 0;
line = ln;
isStructSpecifier = false;
}
void setAggregate(unsigned char size)
{
primarySize = size;
}
void setMatrix(unsigned char c, unsigned char r)
{
ASSERT(c > 1 && r > 1 && c <= 4 && r <= 4);
primarySize = c;
secondarySize = r;
}
bool isUnsizedArray() const
{
return array && arraySize == 0;
}
void setArraySize(int s)
{
array = true;
arraySize = s;
}
void clearArrayness()
{
array = false;
arraySize = 0;
}
bool isStructureContainingArrays() const
{
if (!userDef)
{
return false;
}
return userDef->isStructureContainingArrays();
}
bool isStructureContainingType(TBasicType t) const
{
if (!userDef)
{
return false;
}
return userDef->isStructureContainingType(t);
}
bool isMatrix() const
{
return primarySize > 1 && secondarySize > 1;
}
bool isVector() const
{
return primarySize > 1 && secondarySize == 1;
}
int getCols() const
{
ASSERT(isMatrix());
return primarySize;
}
int getRows() const
{
ASSERT(isMatrix());
return secondarySize;
}
int getNominalSize() const
{
return primarySize;
}
bool isAggregate() const
{
return array || isMatrix() || isVector();
}
};
#endif // COMPILER_TRANSLATOR_TYPES_H_
|