[フレーム]

Class: SourceMap::Offset

Inherits:
Object show all
Includes:
Comparable
Defined in:
opal/stdlib/source_map/offset.rb

Overview

Public: Offset is an immutable structure representing a position in a source file.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(line, column) ⇒ Offset

Public: Initialize an Offset.

line - Integer line number column - Integer column number

25
26
27
# File 'opal/stdlib/source_map/offset.rb', line 25
def initialize(line, column)
 @line, @column = line, column
end

Instance Attribute Details

#column ⇒ Object (readonly)

Public: Get Integer column of offset

33
34
35
# File 'opal/stdlib/source_map/offset.rb', line 33
def column
 @column
end

#line ⇒ Object (readonly)

Public: Gets Integer line of offset

30
31
32
# File 'opal/stdlib/source_map/offset.rb', line 30
def line
 @line
end

Class Method Details

.new(*args) ⇒ Object

Public: Construct Offset value.

Returns Offset instance.

10
11
12
13
14
15
16
17
18
19
# File 'opal/stdlib/source_map/offset.rb', line 10
def self.new(*args)
 case args.first
 when Offset 
 args.first
 when Array 
 super(*args.first)
 else
 super(*args)
 end
end

Instance Method Details

#+(other) ⇒ Object

Public: Shift the offset by some value.

other - An Offset to add by its line and column Or an Integer to add by line

Returns a new Offset instance.

41
42
43
44
45
46
47
48
49
50
# File 'opal/stdlib/source_map/offset.rb', line 41
def +(other)
 case other
 when Offset 
 Offset .new (self.line + other.line, self.column + other.column)
 when Integer
 Offset .new (self.line + other, self.column)
 else
 raise ArgumentError, "can't convert #{other} into #{self.class}"
 end
end

#<=>(other) ⇒ Object

Public: Compare Offset to another.

Useful for determining if a position in a few is between two offsets.

other - Another Offset

Returns a negative number when other is smaller and a positive number when its greater. Implements the Comparable#<=> protocol.

60
61
62
63
64
65
66
67
68
# File 'opal/stdlib/source_map/offset.rb', line 60
def <=>(other)
 case other
 when Offset 
 diff = self.line - other.line
 diff.zero? ? self.column - other.column : diff
 else
 raise ArgumentError, "can't convert #{other.class} into #{self.class}"
 end
end

#inspect ⇒ Object

Public: Get a pretty inspect output for debugging purposes.

Returns a String.

84
85
86
# File 'opal/stdlib/source_map/offset.rb', line 84
def inspect
 "#<#{self.class} line=#{line}, column=#{column}>"
end

#to_s ⇒ Object

Public: Get a simple string representation of the offset

Returns a String.

73
74
75
76
77
78
79
# File 'opal/stdlib/source_map/offset.rb', line 73
def to_s
 if column == 0
 "#{line}"
 else
 "#{line}:#{column}"
 end
end

AltStyle によって変換されたページ (->オリジナル) /