/*
* Copyright 2010-2017 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.codegen.range
import org.jetbrains.kotlin.codegen.ExpressionCodegen
import org.jetbrains.kotlin.codegen.generateCallReceiver
import org.jetbrains.kotlin.codegen.generateCallSingleArgument
import org.jetbrains.kotlin.codegen.range.forLoop.ForInSimpleProgressionLoopGenerator
import org.jetbrains.kotlin.codegen.range.forLoop.ForLoopGenerator
import org.jetbrains.kotlin.descriptors.CallableDescriptor
import org.jetbrains.kotlin.psi.KtForExpression
import org.jetbrains.kotlin.resolve.calls.callUtil.getReceiverExpression
import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
class PrimitiveNumberUntilRangeValue(rangeCall: ResolvedCall<out CallableDescriptor>) :
PrimitiveNumberRangeIntrinsicRangeValue(rangeCall), ReversableRangeValue {
override fun getBoundedValue(codegen: ExpressionCodegen) =
SimpleBoundedValue(
codegen.asmType(rangeCall.resultingDescriptor.returnType!!),
codegen.generateCallReceiver(rangeCall),
true,
codegen.generateCallSingleArgument(rangeCall),
false
)
override fun createForLoopGenerator(codegen: ExpressionCodegen, forExpression: KtForExpression) =
ForInSimpleProgressionLoopGenerator.fromBoundedValueWithStep1(codegen, forExpression, getBoundedValue(codegen))
override fun createForInReversedLoopGenerator(codegen: ExpressionCodegen, forExpression: KtForExpression) =
createConstBoundedForInReversedUntilGenerator(codegen, forExpression)
?: ForInSimpleProgressionLoopGenerator.fromBoundedValueWithStepMinus1(
codegen, forExpression, getBoundedValue(codegen),
inverseBoundsEvaluationOrder = true
)
private fun createConstBoundedForInReversedUntilGenerator(
codegen: ExpressionCodegen,
forExpression: KtForExpression
): ForLoopGenerator? {
val endExpression = rangeCall.getReceiverExpression() ?: return null
return createConstBoundedForLoopGeneratorOrNull(
codegen, forExpression,
codegen.generateCallSingleArgument(rangeCall),
endExpression,
step = -1,
isStartInclusive = false
)
}
}