org.jetbrains.kotlin.codegen.DefaultCallMask.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2015 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
import org.jetbrains.org.objectweb.asm.Type
import java.util.*
class DefaultCallMask(val size: Int) {
val bits: BitSet = BitSet(size)
fun mark(index: Int) {
assert (index < size) {
"Mask index should be less then size, but $index >= $size"
}
bits.set(index)
}
fun toInts(): List {
if (bits.isEmpty || size == 0) {
return emptyList()
}
val masks = ArrayList(1)
var mask = 0
for (i in 0..size - 1) {
if (i != 0 && i % Integer.SIZE == 0) {
masks.add(mask)
mask = 0;
}
mask = mask or if (bits.get(i)) 1 shl (i % Integer.SIZE) else 0
}
masks.add(mask)
return masks
}
public fun generateOnStackIfNeeded(callGenerator: CallGenerator): Boolean {
val toInts = toInts()
for (mask in toInts) {
callGenerator.putValueIfNeeded(null, Type.INT_TYPE, StackValue.constant(mask, Type.INT_TYPE))
}
return toInts.isNotEmpty();
}
}