all files / src/ SpelExpressionEvaluator.js

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
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2×
2×
 
2×
 
1×
93×
 
 
93×
61×
 
 
93×
 
93×
 
 
 
 
93×
 
 
2×
90×
90×
 
93×
 
 
 
 
 
2×
85×
 
 
2×
 
 
/*
 * Copyright 2002-2015 the original author or authors.
 *
 * 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.
 */
 
/**
 * @author Ben March
 * @since 0.2.0
 */
 
import { SpelExpressionParser as spelExpressionParser } from './SpelExpressionParser';
import { Stack } from './lib/Stack';
 
var spelExpressionEvaluator = {};
 
function evalCompiled(compiledExpression, context, locals) {
  var activeContext = new Stack(),
    state;
 
  if (!context) {
    context = {};
  }
 
  activeContext.push(context);
 
  state = {
    rootContext: context,
    activeContext: activeContext,
    locals: locals,
  };
  return compiledExpression.getValue(state);
}
 
spelExpressionEvaluator.compile = function (expression) {
  var compiledExpression = spelExpressionParser().parse(expression);
  return {
    eval: function (context, locals) {
      return evalCompiled(compiledExpression, context, locals);
    },
    _compiledExpression: compiledExpression,
  };
};
 
spelExpressionEvaluator.eval = function (expression, context, locals) {
  return spelExpressionEvaluator.compile(expression).eval(context, locals);
};
 
export { spelExpressionEvaluator as SpelExpressionEvaluator };