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/*
* Copyright 2010-2016 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.ir.builders
import org.jetbrains.kotlin.ir.IrElement
import org.jetbrains.kotlin.ir.IrStatement
import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
import org.jetbrains.kotlin.ir.expressions.IrBlock
import org.jetbrains.kotlin.ir.expressions.IrBlockBody
import org.jetbrains.kotlin.ir.expressions.IrExpression
import org.jetbrains.kotlin.ir.expressions.IrStatementOrigin
import org.jetbrains.kotlin.ir.expressions.impl.IrBlockBodyImpl
import org.jetbrains.kotlin.ir.expressions.impl.IrBlockImpl
import org.jetbrains.kotlin.types.KotlinType
import java.util.*
abstract class IrBuilder(
override val context: IrGeneratorContext,
var startOffset: Int,
var endOffset: Int
) : IrGenerator
abstract class IrBuilderWithScope(
context: IrGeneratorContext,
override val scope: Scope,
startOffset: Int,
endOffset: Int
) : IrBuilder(context, startOffset, endOffset), IrGeneratorWithScope
abstract class IrStatementsBuilder(
context: IrGeneratorContext,
scope: Scope,
startOffset: Int,
endOffset: Int
) : IrBuilderWithScope(context, scope, startOffset, endOffset), IrGeneratorWithScope {
operator fun IrStatement.unaryPlus() {
addStatement(this)
}
protected abstract fun addStatement(irStatement: IrStatement)
abstract fun doBuild(): T
}
open class IrBlockBodyBuilder(
context: IrGeneratorContext,
scope: Scope,
startOffset: Int,
endOffset: Int
) : IrStatementsBuilder(context, scope, startOffset, endOffset) {
private val irBlockBody = IrBlockBodyImpl(startOffset, endOffset)
inline fun blockBody(body: IrBlockBodyBuilder.() -> Unit): IrBlockBody {
body()
return doBuild()
}
override fun addStatement(irStatement: IrStatement) {
irBlockBody.statements.add(irStatement)
}
override fun doBuild(): IrBlockBody {
return irBlockBody
}
}
class IrBlockBuilder(
context: IrGeneratorContext, scope: Scope,
startOffset: Int, endOffset: Int,
val origin: IrStatementOrigin? = null,
var resultType: KotlinType? = null
) : IrStatementsBuilder(context, scope, startOffset, endOffset) {
private val statements = ArrayList()
inline fun block(body: IrBlockBuilder.() -> Unit): IrBlock {
body()
return doBuild()
}
override fun addStatement(irStatement: IrStatement) {
statements.add(irStatement)
}
override fun doBuild(): IrBlock {
val resultType = this.resultType ?:
(statements.lastOrNull() as? IrExpression)?.type ?:
context.builtIns.unitType
val irBlock = IrBlockImpl(startOffset, endOffset, resultType, origin)
irBlock.statements.addAll(statements)
return irBlock
}
}
fun T.at(startOffset: Int, endOffset: Int): T {
this.startOffset = startOffset
this.endOffset = endOffset
return this
}
inline fun IrGeneratorWithScope.irBlock(startOffset: Int = UNDEFINED_OFFSET, endOffset: Int = UNDEFINED_OFFSET,
origin: IrStatementOrigin? = null, resultType: KotlinType? = null,
body: IrBlockBuilder.() -> Unit
): IrExpression =
IrBlockBuilder(context, scope,
startOffset,
endOffset,
origin, resultType
).block(body)
inline fun IrGeneratorWithScope.irBlockBody(startOffset: Int = UNDEFINED_OFFSET, endOffset: Int = UNDEFINED_OFFSET,
body: IrBlockBodyBuilder.() -> Unit
) : IrBlockBody =
IrBlockBodyBuilder(context, scope,
startOffset,
endOffset
).blockBody(body)
