sbt/launch/Pre.scala

30 lines
949 B
Scala

package xsbt.boot
object Pre
{
def trimLeading(line: String) =
{
def newStart(i: Int): Int = if(i >= line.length || !Character.isWhitespace(line.charAt(i))) i else newStart(i+1)
line.substring(newStart(0))
}
def isEmpty(line: String) = line.length == 0
def isNonEmpty(line: String) = line.length > 0
def assert(condition: Boolean, msg: => String): Unit = if (!condition) throw new AssertionError(msg)
def assert(condition: Boolean): Unit = assert(condition, "Assertion failed")
def require(condition: Boolean, msg: => String): Unit = if (!condition) throw new IllegalArgumentException(msg)
def error(msg: String): Nothing = throw new BootException(msg)
def toBoolean(s: String) = java.lang.Boolean.parseBoolean(s)
def toArray[T](list: List[T]) =
{
val arr = new Array[T](list.length)
def copy(i: Int, rem: List[T]): Unit =
if(i < arr.length)
{
arr(i) = rem.head
copy(i+1, rem.tail)
}
copy(0, list)
arr
}
}