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Make MatchData more compliant
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meh committed Oct 23, 2013
1 parent 63bfdd2 commit 3d13b52
Showing 1 changed file with 56 additions and 27 deletions.
83 changes: 56 additions & 27 deletions corelib/match_data.rb
Original file line number Diff line number Diff line change
@@ -1,81 +1,110 @@
class MatchData < Array
class MatchData
attr_reader :post_match, :pre_match, :regexp, :string

def self.new(regexp, match_groups)
%x{
var instance = new Opal.MatchData._alloc;
data = super(regexp, match_groups)

$` = data.pre_match
$' = data.post_match
$~ = data

data
end

def initialize(regexp, match_groups)
@regexp = regexp
@begin = `match_groups.index`
@string = `match_groups.input`
@pre_match = `#@string.substr(0, regexp.lastIndex - match_groups[0].length)`
@post_match = `#@string.substr(regexp.lastIndex)`
@matches = []

%x{
for (var i = 0, length = match_groups.length; i < length; i++) {
var group = match_groups[i];
if (group == null) {
instance.push(nil);
#@matches.push(nil);
}
else {
instance.push(group);
#@matches.push(group);
}
}
}
end

instance._begin = match_groups.index;
instance.regexp = regexp;
instance.string = match_groups.input;
instance.pre_match = #{$` = `instance.string.substr(0, regexp.lastIndex - instance[0].length)`};
instance.post_match = #{$' = `instance.string.substr(regexp.lastIndex)`};
def [](*args)
@matches[*args]
end

return #{$~ = `instance`};
}
def ==(other)
return false unless MatchData === other

`self.string == other.string` &&
`self.regexp == other.regexp` &&
`self.pre_match == other.pre_match` &&
`self.post_match == other.post_match` &&
`self.begin == other.begin`
end

def begin(pos)
%x{
if (pos == 0 || pos == 1) {
return self._begin;
}
}
if pos != 0 && pos != 1
raise ArgumentError, 'MatchData#begin only supports 0th element'
end

raise ArgumentError, 'MatchData#begin only supports 0th element'
@begin
end

def captures
`self.slice(1)`
`#@matches.slice(1)`
end

def inspect
%x{
var str = "#<MatchData " + #{`self[0]`.inspect};
var str = "#<MatchData " + #{`#@matches[0]`.inspect};
for (var i = 1, length = self.length; i < length; i++) {
str += " " + i + ":" + #{`self[i]`.inspect};
for (var i = 1, length = #@matches.length; i < length; i++) {
str += " " + i + ":" + #{`#@matches[i]`.inspect};
}
return str + ">";
}
end

def length
`#@matches.length`
end

alias size length

def to_a
@matches
end

def to_s
`self[0]`
`#@matches[0]`
end

def to_n
`self.valueOf()`
@matches
end

def values_at(*indexes)
%x{
var values = [],
match_length = self.length;
match_length = #@matches.length;
for (var i = 0, length = indexes.length; i < length; i++) {
var pos = indexes[i];
if (pos >= 0) {
values.push(self[pos]);
values.push(#@matches[pos]);
}
else {
pos += match_length;
if (pos > 0) {
values.push(self[pos]);
values.push(#@matches[pos]);
}
else {
values.push(nil);
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