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/*
* 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.generators.builtins.ranges
import org.jetbrains.kotlin.generators.builtins.*
import org.jetbrains.kotlin.generators.builtins.generateBuiltIns.*
import org.jetbrains.kotlin.generators.builtins.ProgressionKind.*
import java.io.PrintWriter
class GenerateRanges(out: PrintWriter) : BuiltInsSourceGenerator(out) {
override fun getPackage() = "kotlin.ranges"
override fun generateBody() {
for (kind in ProgressionKind.values()) {
val t = kind.capitalized
val range = "${t}Range"
val increment = "1"
val emptyBounds = when (kind) {
CHAR -> "1.toChar(), 0.toChar()"
else -> "1, 0"
}
fun compare(v: String) = areEqualNumbers(v)
val hashCode = when (kind) {
CHAR -> "=\n" +
" if (isEmpty()) -1 else (31 * first.toInt() + last.toInt())"
INT -> "=\n" +
" if (isEmpty()) -1 else (31 * first + last)"
LONG -> "=\n" +
" if (isEmpty()) -1 else (31 * ${hashLong("first")} + ${hashLong("last")}).toInt()"
}
val toString = "\"\$first..\$last\""
out.println(
"""/**
* A range of values of type `$t`.
*/
public class $range(start: $t, endInclusive: $t) : ${t}Progression(start, endInclusive, $increment), ClosedRange<$t> {
override val start: $t get() = first
override val endInclusive: $t get() = last
override fun contains(value: $t): Boolean = first <= value && value <= last
override fun isEmpty(): Boolean = first > last
override fun equals(other: Any?): Boolean =
other is $range && (isEmpty() && other.isEmpty() ||
${compare("first")} && ${compare("last")})
override fun hashCode(): Int $hashCode
override fun toString(): String = $toString
companion object {
/** An empty range of values of type $t. */
public val EMPTY: $range = $range($emptyBounds)
}
}""")
out.println()
}
}
}
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