SkSL::ConstructorArrayCast Class Reference

#include <SkSLConstructorArrayCast.h>

Inheritance diagram for SkSL::ConstructorArrayCast:

Public Member Functions
	ConstructorArrayCast (Position pos, const Type &type, std::unique_ptr< Expression > arg)
std::unique_ptr< Expression >	clone (Position pos) const override
Public Member Functions inherited from SkSL::SingleArgumentConstructor
	SingleArgumentConstructor (Position pos, Kind kind, const Type *type, std::unique_ptr< Expression > argument)
std::unique_ptr< Expression > &	argument ()
const std::unique_ptr< Expression > &	argument () const
SkSpan< std::unique_ptr< Expression > >	argumentSpan () final
SkSpan< const std::unique_ptr< Expression > >	argumentSpan () const final
Public Member Functions inherited from SkSL::AnyConstructor
	AnyConstructor (Position pos, Kind kind, const Type *type)
virtual SkSpan< std::unique_ptr< Expression > >	argumentSpan ()=0
virtual SkSpan< const std::unique_ptr< Expression > >	argumentSpan () const =0
std::string	description (OperatorPrecedence) const override
const Type &	componentType () const
bool	supportsConstantValues () const override
std::optional< double >	getConstantValue (int n) const override
ComparisonResult	compareConstant (const Expression &other) const override
Public Member Functions inherited from SkSL::Expression
	Expression (Position pos, Kind kind, const Type *type)
Kind	kind () const
const Type &	type () const
bool	isAnyConstructor () const
bool	isIntLiteral () const
bool	isFloatLiteral () const
bool	isBoolLiteral () const
AnyConstructor &	asAnyConstructor ()
const AnyConstructor &	asAnyConstructor () const
bool	isIncomplete (const Context &context) const
virtual ComparisonResult	compareConstant (const Expression &other) const
CoercionCost	coercionCost (const Type &target) const
virtual bool	supportsConstantValues () const
virtual std::optional< double >	getConstantValue (int n) const
virtual std::unique_ptr< Expression >	clone (Position pos) const =0
std::unique_ptr< Expression >	clone () const
std::string	description () const final
virtual std::string	description (OperatorPrecedence parentPrecedence) const =0
Public Member Functions inherited from SkSL::IRNode
virtual	~IRNode ()
virtual std::string	description () const =0
	IRNode (const IRNode &)=delete
IRNode &	operator= (const IRNode &)=delete
Position	position () const
void	setPosition (Position p)
template<typename T >
bool	is () const
template<typename T >
const T &	as () const
template<typename T >
T &	as ()

Static Public Member Functions
static std::unique_ptr< Expression >	Make (const Context &context, Position pos, const Type &type, std::unique_ptr< Expression > arg)
Static Public Member Functions inherited from SkSL::Poolable
static void *	operator new (const size_t size)
static void	operator delete (void *ptr)

Static Public Attributes
static constexpr Kind	kIRNodeKind = Kind::kConstructorArrayCast

Additional Inherited Members
Public Types inherited from SkSL::Expression
enum class	ComparisonResult { kUnknown = -1 , kNotEqual , kEqual }
using	Kind = ExpressionKind
Public Attributes inherited from SkSL::IRNode
Position	fPosition
Protected Member Functions inherited from SkSL::IRNode
	IRNode (Position position, int kind)
Protected Attributes inherited from SkSL::IRNode
int	fKind

Detailed Description

Represents the typecasting of an array. Arrays cannot be directly casted in SkSL (or GLSL), but type narrowing can cause an array to be implicitly casted. For instance, the expression myHalf2Array == float[2](a, b) should be allowed when narrowing conversions are enabled; this constructor allows the necessary array-type conversion to be represented in IR.

These always contain exactly 1 array of matching size, and are never constant.

Definition at line 32 of file SkSLConstructorArrayCast.h.

Constructor & Destructor Documentation

ConstructorArrayCast()

SkSL::ConstructorArrayCast::ConstructorArrayCast ( Position  pos, const Type &  type, std::unique_ptr< Expression >  arg  )

inline

Definition at line 36 of file SkSLConstructorArrayCast.h.

        : INHERITED(pos, kIRNodeKind, &type, std::move(arg)) {}

Member Function Documentation

clone()

std::unique_ptr< Expression > SkSL::ConstructorArrayCast::clone ( Position  pos ) const

inlineoverridevirtual

Implements SkSL::Expression.

Definition at line 44 of file SkSLConstructorArrayCast.h.

                                                                 {
        return std::make_unique<ConstructorArrayCast>(pos, this->type(), argument()->clone());
    }

Make()

std::unique_ptr< Expression > SkSL::ConstructorArrayCast::Make ( const Context &  context, Position  pos, const Type &  type, std::unique_ptr< Expression >  arg  )

static

Definition at line 46 of file SkSLConstructorArrayCast.cpp.

                                                                                      {
    // Only arrays of the same size are allowed.
    SkASSERT(type.isArray());
    SkASSERT(type.isAllowedInES2(context));
    SkASSERT(arg->type().isArray());
    SkASSERT(type.columns() == arg->type().columns());
 
    // If this is a no-op cast, return the expression as-is.
    if (type.matches(arg->type())) {
        arg->fPosition = pos;
        return arg;
    }
 
    // Look up the value of constant variables. This allows constant-expressions like `myArray` to
    // be replaced with the compile-time constant `int[2](0, 1)`.
    arg = ConstantFolder::MakeConstantValueForVariable(pos, std::move(arg));
 
    // We can cast a vector of compile-time constants at compile-time.
    if (Analysis::IsCompileTimeConstant(*arg)) {
        return cast_constant_array(context, pos, type, std::move(arg));
    }
    return std::make_unique<ConstructorArrayCast>(pos, type, std::move(arg));
}

Member Data Documentation

kIRNodeKind

constexpr Kind SkSL::ConstructorArrayCast::kIRNodeKind = Kind::kConstructorArrayCast

inlinestaticconstexpr

Definition at line 34 of file SkSLConstructorArrayCast.h.

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The documentation for this class was generated from the following files:

• third_party/skia/src/sksl/ir/SkSLConstructorArrayCast.h
• third_party/skia/src/sksl/ir/SkSLConstructorArrayCast.cpp