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/*
* Copyright 2020 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/sksl/DSLVar.h"
#include "include/core/SkTypes.h"
#include "include/private/SkSLDefines.h"
#include "include/private/SkSLStatement.h"
#include "include/private/SkSLSymbol.h"
#include "include/sksl/DSLModifiers.h"
#include "include/sksl/DSLType.h"
#include "include/sksl/SkSLOperator.h"
#include "src/sksl/SkSLThreadContext.h"
#include "src/sksl/ir/SkSLBinaryExpression.h"
#include "src/sksl/ir/SkSLExpression.h"
#include "src/sksl/ir/SkSLFieldAccess.h"
#include "src/sksl/ir/SkSLFunctionCall.h"
#include "src/sksl/ir/SkSLSymbolTable.h"
#include "src/sksl/ir/SkSLVariable.h"
#include <utility>
namespace SkSL {
namespace dsl {
/**
* DSLVarBase
*/
DSLVarBase::DSLVarBase(VariableStorage storage, DSLType type, std::string_view name,
DSLExpression initialValue, Position pos, Position namePos)
: DSLVarBase(storage, DSLModifiers(), std::move(type), name, std::move(initialValue),
pos, namePos) {}
DSLVarBase::DSLVarBase(VariableStorage storage, const DSLModifiers& modifiers, DSLType type,
std::string_view name, DSLExpression initialValue, Position pos,
Position namePos)
: fModifiers(std::move(modifiers))
, fType(std::move(type))
, fNamePosition(namePos)
, fName(name)
, fInitialValue(std::move(initialValue))
, fPosition(pos)
, fStorage(storage) {}
void DSLVarBase::swap(DSLVarBase& other) {
SkASSERT(this->storage() == other.storage());
std::swap(fModifiers, other.fModifiers);
std::swap(fType, other.fType);
std::swap(fDeclaration, other.fDeclaration);
std::swap(fVar, other.fVar);
std::swap(fNamePosition, other.fNamePosition);
std::swap(fName, other.fName);
std::swap(fInitialValue.fExpression, other.fInitialValue.fExpression);
std::swap(fInitialized, other.fInitialized);
std::swap(fPosition, other.fPosition);
}
DSLExpression DSLVarBase::operator[](DSLExpression&& index) {
return DSLExpression(*this)[std::move(index)];
}
DSLExpression DSLVarBase::assignExpression(DSLExpression expr) {
return DSLExpression(BinaryExpression::Convert(ThreadContext::Context(), Position(),
DSLExpression(*this, Position()).release(), SkSL::Operator::Kind::EQ,
expr.release()));
}
/**
* DSLVar
*/
DSLVar::DSLVar() : DSLVarBase(SkSL::VariableStorage::kLocal) {}
DSLVar::DSLVar(DSLType type, std::string_view name, DSLExpression initialValue,
Position pos, Position namePos)
: INHERITED(SkSL::VariableStorage::kLocal, type, name, std::move(initialValue),
pos, namePos) {}
DSLVar::DSLVar(const DSLModifiers& modifiers, DSLType type, std::string_view name,
DSLExpression initialValue, Position pos, Position namePos)
: INHERITED(SkSL::VariableStorage::kLocal, modifiers, type, name, std::move(initialValue),
pos, namePos) {}
void DSLVar::swap(DSLVar& other) {
INHERITED::swap(other);
}
/**
* DSLGlobalVar
*/
DSLGlobalVar::DSLGlobalVar() : DSLVarBase(SkSL::VariableStorage::kGlobal) {}
DSLGlobalVar::DSLGlobalVar(DSLType type, std::string_view name, DSLExpression initialValue,
Position pos, Position namePos)
: INHERITED(SkSL::VariableStorage::kGlobal, type, name, std::move(initialValue),
pos, namePos) {}
DSLGlobalVar::DSLGlobalVar(const DSLModifiers& modifiers, DSLType type, std::string_view name,
DSLExpression initialValue, Position pos, Position namePos)
: INHERITED(SkSL::VariableStorage::kGlobal, modifiers, type, name, std::move(initialValue),
pos, namePos) {}
DSLGlobalVar::DSLGlobalVar(const char* name)
: INHERITED(SkSL::VariableStorage::kGlobal, kVoid_Type, name, DSLExpression(),
Position(), Position()) {
fName = name;
SkSL::SymbolTable* symbolTable = ThreadContext::SymbolTable().get();
SkSL::Symbol* result = symbolTable->findMutable(fName);
SkASSERTF(result, "could not find '%.*s' in symbol table", (int)fName.length(), fName.data());
fVar = &result->as<SkSL::Variable>();
fInitialized = true;
}
void DSLGlobalVar::swap(DSLGlobalVar& other) {
INHERITED::swap(other);
}
std::unique_ptr<SkSL::Expression> DSLGlobalVar::methodCall(std::string_view methodName,
Position pos) {
if (!this->fType.isEffectChild()) {
ThreadContext::ReportError("type does not support method calls", pos);
return nullptr;
}
return FieldAccess::Convert(ThreadContext::Context(), pos, *ThreadContext::SymbolTable(),
DSLExpression(*this, pos).release(), methodName);
}
DSLExpression DSLGlobalVar::eval(ExpressionArray args, Position pos) {
auto method = this->methodCall("eval", pos);
return DSLExpression(
method ? SkSL::FunctionCall::Convert(ThreadContext::Context(), pos, std::move(method),
std::move(args))
: nullptr,
pos);
}
DSLExpression DSLGlobalVar::eval(DSLExpression x, Position pos) {
ExpressionArray converted;
converted.push_back(x.release());
return this->eval(std::move(converted), pos);
}
DSLExpression DSLGlobalVar::eval(DSLExpression x, DSLExpression y, Position pos) {
ExpressionArray converted;
converted.push_back(x.release());
converted.push_back(y.release());
return this->eval(std::move(converted), pos);
}
/**
* DSLParameter
*/
DSLParameter::DSLParameter() : DSLVarBase(SkSL::VariableStorage::kParameter) {}
DSLParameter::DSLParameter(DSLType type, std::string_view name, Position pos, Position namePos)
: INHERITED(SkSL::VariableStorage::kParameter, type, name, DSLExpression(), pos, namePos) {}
DSLParameter::DSLParameter(const DSLModifiers& modifiers, DSLType type, std::string_view name,
Position pos, Position namePos)
: INHERITED(SkSL::VariableStorage::kParameter, modifiers, type, name, DSLExpression(),
pos, namePos) {}
void DSLParameter::swap(DSLParameter& other) {
INHERITED::swap(other);
}
} // namespace dsl
} // namespace SkSL
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