1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/* NSC -- new Scala compiler
* Copyright 2002-2010 LAMP/EPFL
* @author Martin Odersky
*/
// $Id$
package scala.tools.nsc
package reporters
import scala.tools.nsc.util._
/**
* This interface provides methods to issue information, warning and
* error messages.
*/
abstract class Reporter {
object severity extends Enumeration
class Severity(_id: Int) extends severity.Value {
var count: Int = 0
def id = _id
}
val INFO = new Severity(0)
val WARNING = new Severity(1)
val ERROR = new Severity(2)
def reset {
INFO.count = 0
ERROR.count = 0
WARNING.count = 0
cancelled = false
}
var cancelled: Boolean = false
def hasErrors: Boolean = ERROR.count != 0 || cancelled
/** Flush all output */
def flush() { }
protected def info0(pos: Position, msg: String, severity: Severity, force: Boolean): Unit
private var source: SourceFile = _
def setSource(source: SourceFile) { this.source = source }
def getSource: SourceFile = source
def info(pos: Position, msg: String, force: Boolean) { info0(pos, msg, INFO, force) }
def warning(pos: Position, msg: String ) { info0(pos, msg, WARNING, false) }
def error(pos: Position, msg: String ) { info0(pos, msg, ERROR, false) }
def comment(pos: Position, msg: String) {}
/** An error that could possibly be fixed if the unit were longer.
* This is used only when the interpreter tries
* to distinguish fatal errors from those that are due to
* needing more lines of input from the user.
*
* Should be re-factored into a subclass.
*/
var incompleteInputError: (Position, String) => Unit = error
var incompleteHandled: Boolean = false
def withIncompleteHandler[T](handler: (Position, String) => Unit)(thunk: => T) = {
val savedHandler = incompleteInputError
val savedHandled = incompleteHandled
try {
incompleteInputError = handler
incompleteHandled = true
thunk
} finally {
incompleteInputError = savedHandler
incompleteHandled = savedHandled
}
}
// @M: moved here from ConsoleReporter and made public -- also useful in e.g. Typers
/** Returns a string meaning "n elements".
*
* @param n ...
* @param elements ...
* @return ...
*/
def countElementsAsString(n: Int, elements: String): String =
n match {
case 0 => "no " + elements + "s"
case 1 => "one " + elements
case 2 => "two " + elements + "s"
case 3 => "three " + elements + "s"
case 4 => "four " + elements + "s"
case _ => "" + n + " " + elements + "s"
}
/** Turns a count into a friendly English description if n<=4.
*
* @param n ...
* @return ...
*/
def countAsString(n: Int): String =
n match {
case 0 => "none"
case 1 => "one"
case 2 => "two"
case 3 => "three"
case 4 => "four"
case _ => "" + n
}
}
|
