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// Copyright © 2015 Benjamin Barenblat
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
var UrWeb = { Regex: {
_compile: function(needle_string) {
var needle;
try {
needle = new RegExp(needle_string);
} catch (e) {
er("regex: compilation failed");
}
return needle;
},
succeeded: function(match) {
return !!match;
},
nSubexpressionMatches: function(match) {
return match.length - 1;
},
subexpressionMatch: function(match, n) {
if (match.length - 1 <= n) {
er("regex: match does not exist");
}
return match[n + 1];
},
doMatch: function(needle, haystack) {
return haystack.match(UrWeb.Regex._compile(needle));
},
replace: function(needle, haystack, replacement) {
return haystack.replace(UrWeb.Regex._compile(needle), replacement);
},
}}; // UrWeb.Regex
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