Add Function ArrayOfType, + Tests and doc

Author: Sébastien Geiser

CodingSeb.ExpressionEvaluator.Tests/ExpressionEvaluatorTests.cs

@@ -131,6 +131,11 @@ public void TypeTesting(string expression, Type type)
         [TestCase("\"Text()\".Replace(\"(\", \"x\")", TestOf = typeof(string), ExpectedResult = "Textx)", Category = "StringWithParenthisOrComaInFunctionsArgs")]
         [TestCase("\"Text()\".Replace(\"x\", \",\")", TestOf = typeof(string), ExpectedResult = "Te,t()", Category = "StringWithParenthisOrComaInFunctionsArgs")]
         [TestCase("\"Text()\".Replace(\"(\", \",\")", TestOf = typeof(string), ExpectedResult = "Text,)", Category = "StringWithParenthisOrComaInFunctionsArgs")]
+
+        [TestCase("\"Hello,Test,What\".Split(ArrayOfType(typeof(char), ',')).Length", ExpectedResult = 3, Category = "StringSplit,ArrayOfType")]
+        [TestCase("\"Hello,Test,What\".Split(ArrayOfType(typeof(char), ','))[0]", ExpectedResult = "Hello", Category = "StringSplit,ArrayOfType")]
+        [TestCase("\"Hello,Test,What\".Split(ArrayOfType(typeof(char), ','))[1]", ExpectedResult = "Test", Category = "StringSplit,ArrayOfType")]
+        [TestCase("\"Hello,Test,What\".Split(ArrayOfType(typeof(char), ','))[2]", ExpectedResult = "What", Category = "StringSplit,ArrayOfType")]
         #endregion
 
         #region char

CodingSeb.ExpressionEvaluator/ExpressionEvaluator.cs

@@ -333,6 +333,15 @@ private enum TryBlockEvaluatedState
         private Dictionary<string, Func<ExpressionEvaluator, List<string>, object>> complexStandardFuncsDictionary = new Dictionary<string, Func<ExpressionEvaluator, List<string>, object>>(StringComparer.Ordinal)
         {
             { "Array", (self, args) => args.ConvertAll(arg => self.Evaluate(arg)).ToArray() },
+            { "ArrayOfType", (self, args) =>
+                {
+                    Array sourceArray = args.Skip(1).Select(arg => self.Evaluate(arg)).ToArray();
+                    Array typedArray = Array.CreateInstance((Type)self.Evaluate(args[0]), sourceArray.Length);
+                    Array.Copy(sourceArray, typedArray, sourceArray.Length);
+
+                    return typedArray;
+                }
+            },
             { "Avg", (self, args) => args.ConvertAll(arg => Convert.ToDouble(self.Evaluate(arg))).Sum() / args.Count },
             { "default", (self, args) =>
                 {

README.md

@@ -148,6 +148,18 @@ Enumerable.Repeat(3,6).Cast().ToList()[4]
 
 "Hello"[2] == 'l'
 true
+
+"Hello,Test,What".Split(ArrayOfType(typeof(char), ',')).Length
+3
+
+"Hello,Test,What".Split(ArrayOfType(typeof(char), ','))[0]
+Hello
+
+"Hello,Test,What".Split(ArrayOfType(typeof(char), ','))[1]
+Test
+
+"Hello,Test,What".Split(ArrayOfType(typeof(char), ','))[2]
+What
 ```
 
 ### Small scripts
@@ -345,6 +357,7 @@ The following functions are internally defined. (Most of these are [System.Math
 |**[Abs](https://msdn.microsoft.com/en-us/library/f2yzeea2(v=vs.110).aspx)**(double number)|Return a double that is the absolute value of number|`Abs(-3.2d)`|`3.2d`|
 |**[Acos](https://msdn.microsoft.com/en-us/library/system.math.acos(v=vs.110).aspx)**(double d)|Return a double value that is the angle in radian whose d is the cosine<br/>d must be betwteen -1 and 1|`Acos(-0.5d)`|`2.0943951023032d`|
 |**Array**(object obj1, object obj2 ,...)|Return a array (System.Object[]) of all given arguments|`Array(1, "Hello", true)`|`new object[]{1, "Hello", true}`|
+|**ArrayOfType**(Type typeOfTheArray, object obj1, object oj2, ...)|Return a array of the specified type|`ArrayOfType(typeof(char), ',',';')`|`new char[]{',', ';'}`
 |**[Asin](https://msdn.microsoft.com/en-us/library/system.math.asin(v=vs.110).aspx)**(double d)|Return a double value that is the angle in radian whose d is the sine<br/>d must be betwteen -1 and 1|`Asin(-0.2d)`|`0.304692654015398d`|
 |**[Atan](https://msdn.microsoft.com/en-us/library/system.math.atan(v=vs.110).aspx)**(double d)|Return a double value that is the angle in radian whose d is the tangent|`Atan(2.1)`|`1.1263771168938d`|
 |**[Atan2](https://msdn.microsoft.com/en-us/library/system.math.atan2(v=vs.110).aspx)**(double x, double y)|Return a double value that is the angle in radian whose the tangente is the quotient of x and y<br/>|`Atan2(2.1d, 3.4d)`|`0.553294325322293d`|