wenzelm@34145
|
1 |
/* Title: Pure/library.scala
|
wenzelm@34145
|
2 |
Author: Makarius
|
wenzelm@34145
|
3 |
|
wenzelm@34145
|
4 |
Basic library.
|
wenzelm@34145
|
5 |
*/
|
wenzelm@34145
|
6 |
|
wenzelm@34145
|
7 |
package isabelle
|
wenzelm@34145
|
8 |
|
wenzelm@38556
|
9 |
|
wenzelm@38556
|
10 |
import java.lang.{System, Thread}
|
wenzelm@34216
|
11 |
import java.awt.Component
|
wenzelm@34216
|
12 |
import javax.swing.JOptionPane
|
wenzelm@34145
|
13 |
|
wenzelm@38556
|
14 |
import scala.actors.Actor
|
wenzelm@37029
|
15 |
import scala.swing.ComboBox
|
wenzelm@37029
|
16 |
import scala.swing.event.SelectionChanged
|
wenzelm@37029
|
17 |
|
wenzelm@37029
|
18 |
|
wenzelm@34145
|
19 |
object Library
|
wenzelm@34145
|
20 |
{
|
wenzelm@37042
|
21 |
/* partial functions */
|
wenzelm@37042
|
22 |
|
wenzelm@37042
|
23 |
def undefined[A, B] = new PartialFunction[A, B] {
|
wenzelm@37042
|
24 |
def apply(x: A): B = throw new NoSuchElementException("undefined")
|
wenzelm@37042
|
25 |
def isDefinedAt(x: A) = false
|
wenzelm@37042
|
26 |
}
|
wenzelm@37042
|
27 |
|
wenzelm@37042
|
28 |
|
wenzelm@36726
|
29 |
/* separate */
|
wenzelm@36726
|
30 |
|
wenzelm@36726
|
31 |
def separate[A](s: A, list: List[A]): List[A] =
|
wenzelm@36726
|
32 |
list match {
|
wenzelm@36726
|
33 |
case x :: xs if !xs.isEmpty => x :: s :: separate(s, xs)
|
wenzelm@36726
|
34 |
case _ => list
|
wenzelm@36726
|
35 |
}
|
wenzelm@36726
|
36 |
|
wenzelm@36726
|
37 |
|
wenzelm@34150
|
38 |
/* reverse CharSequence */
|
wenzelm@34150
|
39 |
|
wenzelm@34150
|
40 |
class Reverse(text: CharSequence, start: Int, end: Int) extends CharSequence
|
wenzelm@34150
|
41 |
{
|
wenzelm@34150
|
42 |
require(0 <= start && start <= end && end <= text.length)
|
wenzelm@34150
|
43 |
|
wenzelm@34150
|
44 |
def this(text: CharSequence) = this(text, 0, text.length)
|
wenzelm@34150
|
45 |
|
wenzelm@34150
|
46 |
def length: Int = end - start
|
wenzelm@34150
|
47 |
def charAt(i: Int): Char = text.charAt(end - i - 1)
|
wenzelm@34150
|
48 |
|
wenzelm@34150
|
49 |
def subSequence(i: Int, j: Int): CharSequence =
|
wenzelm@34150
|
50 |
if (0 <= i && i <= j && j <= length) new Reverse(text, end - j, end - i)
|
wenzelm@34150
|
51 |
else throw new IndexOutOfBoundsException
|
wenzelm@34150
|
52 |
|
wenzelm@34150
|
53 |
override def toString: String =
|
wenzelm@34150
|
54 |
{
|
wenzelm@34150
|
55 |
val buf = new StringBuilder(length)
|
wenzelm@34150
|
56 |
for (i <- 0 until length)
|
wenzelm@34150
|
57 |
buf.append(charAt(i))
|
wenzelm@34150
|
58 |
buf.toString
|
wenzelm@34150
|
59 |
}
|
wenzelm@34150
|
60 |
}
|
wenzelm@34150
|
61 |
|
wenzelm@34150
|
62 |
|
wenzelm@36723
|
63 |
/* iterate over chunks (cf. space_explode/split_lines in ML) */
|
wenzelm@36723
|
64 |
|
wenzelm@36723
|
65 |
def chunks(source: CharSequence, sep: Char = '\n') = new Iterator[CharSequence]
|
wenzelm@36723
|
66 |
{
|
wenzelm@36723
|
67 |
private val end = source.length
|
wenzelm@36723
|
68 |
private def next_chunk(i: Int): Option[(CharSequence, Int)] =
|
wenzelm@36723
|
69 |
{
|
wenzelm@36723
|
70 |
if (i < end) {
|
wenzelm@36723
|
71 |
var j = i; do j += 1 while (j < end && source.charAt(j) != sep)
|
wenzelm@36723
|
72 |
Some((source.subSequence(i + 1, j), j))
|
wenzelm@36723
|
73 |
}
|
wenzelm@36723
|
74 |
else None
|
wenzelm@36723
|
75 |
}
|
wenzelm@36723
|
76 |
private var state: Option[(CharSequence, Int)] = if (end == 0) None else next_chunk(-1)
|
wenzelm@36723
|
77 |
|
wenzelm@36723
|
78 |
def hasNext(): Boolean = state.isDefined
|
wenzelm@36723
|
79 |
def next(): CharSequence =
|
wenzelm@36723
|
80 |
state match {
|
wenzelm@36723
|
81 |
case Some((s, i)) => { state = next_chunk(i); s }
|
wenzelm@36723
|
82 |
case None => throw new NoSuchElementException("next on empty iterator")
|
wenzelm@36723
|
83 |
}
|
wenzelm@36723
|
84 |
}
|
wenzelm@36723
|
85 |
|
wenzelm@36723
|
86 |
|
wenzelm@34216
|
87 |
/* simple dialogs */
|
wenzelm@34216
|
88 |
|
wenzelm@34216
|
89 |
private def simple_dialog(kind: Int, default_title: String)
|
wenzelm@34216
|
90 |
(parent: Component, title: String, message: Any*)
|
wenzelm@34216
|
91 |
{
|
wenzelm@36812
|
92 |
Swing_Thread.now {
|
wenzelm@38488
|
93 |
val java_message = message map { case x: scala.swing.Component => x.peer case x => x }
|
wenzelm@36812
|
94 |
JOptionPane.showMessageDialog(parent,
|
wenzelm@38488
|
95 |
java_message.toArray.asInstanceOf[Array[AnyRef]],
|
wenzelm@36812
|
96 |
if (title == null) default_title else title, kind)
|
wenzelm@36812
|
97 |
}
|
wenzelm@34216
|
98 |
}
|
wenzelm@34216
|
99 |
|
wenzelm@34216
|
100 |
def dialog = simple_dialog(JOptionPane.PLAIN_MESSAGE, null) _
|
wenzelm@34216
|
101 |
def warning_dialog = simple_dialog(JOptionPane.WARNING_MESSAGE, "Warning") _
|
wenzelm@34216
|
102 |
def error_dialog = simple_dialog(JOptionPane.ERROR_MESSAGE, "Error") _
|
wenzelm@34216
|
103 |
|
wenzelm@34216
|
104 |
|
wenzelm@37029
|
105 |
/* zoom box */
|
wenzelm@37029
|
106 |
|
wenzelm@37055
|
107 |
class Zoom_Box(apply_factor: Int => Unit) extends ComboBox[String](
|
wenzelm@37055
|
108 |
List("50%", "70%", "85%", "100%", "125%", "150%", "175%", "200%", "300%", "400%"))
|
wenzelm@37055
|
109 |
{
|
wenzelm@37055
|
110 |
val Factor = "([0-9]+)%?"r
|
wenzelm@37055
|
111 |
def parse(text: String): Int =
|
wenzelm@37055
|
112 |
text match {
|
wenzelm@37055
|
113 |
case Factor(s) =>
|
wenzelm@37055
|
114 |
val i = Integer.parseInt(s)
|
wenzelm@37055
|
115 |
if (10 <= i && i <= 1000) i else 100
|
wenzelm@37055
|
116 |
case _ => 100
|
wenzelm@37055
|
117 |
}
|
wenzelm@37055
|
118 |
def print(i: Int): String = i.toString + "%"
|
wenzelm@37029
|
119 |
|
wenzelm@37055
|
120 |
makeEditable()(c => new ComboBox.BuiltInEditor(c)(text => print(parse(text)), x => x))
|
wenzelm@37055
|
121 |
reactions += {
|
wenzelm@37055
|
122 |
case SelectionChanged(_) => apply_factor(parse(selection.item))
|
wenzelm@37029
|
123 |
}
|
wenzelm@37055
|
124 |
listenTo(selection)
|
wenzelm@37055
|
125 |
selection.index = 3
|
wenzelm@37055
|
126 |
prototypeDisplayValue = Some("00000%")
|
wenzelm@37055
|
127 |
}
|
wenzelm@37029
|
128 |
|
wenzelm@37029
|
129 |
|
wenzelm@34145
|
130 |
/* timing */
|
wenzelm@34145
|
131 |
|
wenzelm@34317
|
132 |
def timeit[A](message: String)(e: => A) =
|
wenzelm@34145
|
133 |
{
|
wenzelm@37702
|
134 |
val start = System.nanoTime()
|
wenzelm@34145
|
135 |
val result = Exn.capture(e)
|
wenzelm@37702
|
136 |
val stop = System.nanoTime()
|
wenzelm@34317
|
137 |
System.err.println(
|
wenzelm@37702
|
138 |
(if (message == null || message.isEmpty) "" else message + ": ") +
|
wenzelm@37702
|
139 |
((stop - start).toDouble / 1000000) + "ms elapsed time")
|
wenzelm@34145
|
140 |
Exn.release(result)
|
wenzelm@34145
|
141 |
}
|
wenzelm@38556
|
142 |
|
wenzelm@38556
|
143 |
|
wenzelm@38556
|
144 |
/* thread as actor */
|
wenzelm@38556
|
145 |
|
wenzelm@38556
|
146 |
def thread_actor(name: String)(body: => Unit): Actor =
|
wenzelm@38556
|
147 |
{
|
wenzelm@38556
|
148 |
val actor = Future.promise[Actor]
|
wenzelm@38556
|
149 |
val thread = new Thread(name) { override def run() = { actor.fulfill(Actor.self); body } }
|
wenzelm@38556
|
150 |
thread.start
|
wenzelm@38556
|
151 |
actor.join
|
wenzelm@38556
|
152 |
}
|
wenzelm@34145
|
153 |
}
|