https://github.com/Xorcerer/zexpression

A library to parse and evalate math expression with functions and variables.
https://github.com/Xorcerer/zexpression

Last synced: about 2 months ago
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A library to parse and evalate math expression with functions and variables.

• Host: GitHub
• URL: https://github.com/Xorcerer/zexpression
• Owner: Xorcerer
• Created: 2012-11-19T12:38:59.000Z (about 12 years ago)
• Default Branch: master
• Last Pushed: 2014-03-04T08:18:11.000Z (almost 11 years ago)
• Last Synced: 2024-08-04T05:04:24.309Z (5 months ago)
• Language: ActionScript
• Homepage:
• Size: 226 KB
• Stars: 10
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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• awesome-actionscript-sorted - zexpression - A library to parse and evalate math expression with functions and variables. (Utilities / Math)

README

        
# zExpression

A library to parse and evalate math expression with functions and

variables.

### Example:

ActionScript 3:

```actionscript

			var c:Number = 1

			var expSet:ExpressionSet = new ExpressionSet

			// Step 1: Parse expression strings.

			expSet.putExp('b', '1 + c + 100 * min(a, 100) / 2')

			expSet.putExp('a', 'min(1, 10)')

			// Step 2: Set variables and functions

			expSet.setVariable('c', c)

			expSet.setFunction('min', Math.min) // min() is built-in actually, example only.

			// Step 3: Get the result. Step 2, 3 could be done repeatly.

			trace('b = ', expSet.getValue('b'))

```

Optional i18n variables support, by replacing the letterValidator, you

can make it support any language:

```actionscript

			var expSet:ExpressionSet = new ExpressionSet

			// Set a custom letter validator

			expSet.letterValidator = CnUtils.isLetterOrCnChar

			expSet.putExp('面包', '面粉 * 水')

			expSet.putExp('家庭', '爱情 + 面包')

			expSet.setVariable('爱情', 99)

			expSet.setVariable('面粉', 1)

			expSet.setVariable('水', 1)

			trace('家庭 = ', expSet.getValue('家庭'))

```

### Supported languages:

* ActionScript 3

### TODO:

* C# support.

* C++ support.

* More test cases.