ExpressionEvaluatorCs 1.1.1

Simple expression evaluator for C#

Install-Package ExpressionEvaluatorCs -Version 1.1.1
dotnet add package ExpressionEvaluatorCs --version 1.1.1
<PackageReference Include="ExpressionEvaluatorCs" Version="1.1.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add ExpressionEvaluatorCs --version 1.1.1
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

ExpressionEvaluator

Simple expression evaluator for C#

Getting Started

  1. Install via nuget: ExpressionEvaluatorCs https://www.nuget.org/packages/ExpressionEvaluatorCs/
  2. Sample code
// Returns 6
var result1 = ExpressionEvaluator.Evaluate("(1 + 2) * 2");

// Returns false
var result2 = ExpressionEvaluator.Evaluate("false and true");

For more samples, see ExpressionEvaluatorTest.cs

Why Use This Library?

  • Lightweight. Single DLL < 10kb and no third party library dependencies
  • Easy to get started and use
  • Customization options
  • Supports older .NET Framework versions

.NET Support

  • Current Release: .NET Framework 4
  • Future release: .NET Core (.NET Standard Library)

Expression Support

  • And
  • False
  • Not
  • Or
  • True

Operator Support

  • <
  • &gt;
  • <=
  • &gt;=
  • <>
  • =
  • +
  • -
  • *
  • /
  • %

Options

Specify Return Type

Sample code

// Returns 6
int result1 = ExpressionEvaluator.Evaluate<int>("(1 + 2) * 2");

// Returns false
bool result2 = ExpressionEvaluator.Evaluate<bool>("false and true");

Specify Operator Mapping

Sample code

ExpressionEvaluator.SetOperatorMap(new Dictionary<string, string>
{
    {"and", "&&"},
    {"or", "||"},
    {"<>", "!=" },
    {"not", "!" },
    {"true", "1" },
    {"false", "0" }
});

// Returns false
bool result = ExpressionEvaluator.Evaluate<bool>("0 && !1");
ExpressionEvaluator.SetOperatorMap(new Dictionary<string, string>
{
    {"+", "plus"},
    {"*", "times"},
    {"/", "divideBy"},
});

// Returns 6
int result = ExpressionEvaluator.Evaluate<int>("(1 plus 2) times 2");

ExpressionEvaluator

Simple expression evaluator for C#

Getting Started

  1. Install via nuget: ExpressionEvaluatorCs https://www.nuget.org/packages/ExpressionEvaluatorCs/
  2. Sample code
// Returns 6
var result1 = ExpressionEvaluator.Evaluate("(1 + 2) * 2");

// Returns false
var result2 = ExpressionEvaluator.Evaluate("false and true");

For more samples, see ExpressionEvaluatorTest.cs

Why Use This Library?

  • Lightweight. Single DLL < 10kb and no third party library dependencies
  • Easy to get started and use
  • Customization options
  • Supports older .NET Framework versions

.NET Support

  • Current Release: .NET Framework 4
  • Future release: .NET Core (.NET Standard Library)

Expression Support

  • And
  • False
  • Not
  • Or
  • True

Operator Support

  • <
  • &gt;
  • <=
  • &gt;=
  • <>
  • =
  • +
  • -
  • *
  • /
  • %

Options

Specify Return Type

Sample code

// Returns 6
int result1 = ExpressionEvaluator.Evaluate<int>("(1 + 2) * 2");

// Returns false
bool result2 = ExpressionEvaluator.Evaluate<bool>("false and true");

Specify Operator Mapping

Sample code

ExpressionEvaluator.SetOperatorMap(new Dictionary<string, string>
{
    {"and", "&&"},
    {"or", "||"},
    {"<>", "!=" },
    {"not", "!" },
    {"true", "1" },
    {"false", "0" }
});

// Returns false
bool result = ExpressionEvaluator.Evaluate<bool>("0 && !1");
ExpressionEvaluator.SetOperatorMap(new Dictionary<string, string>
{
    {"+", "plus"},
    {"*", "times"},
    {"/", "divideBy"},
});

// Returns 6
int result = ExpressionEvaluator.Evaluate<int>("(1 plus 2) times 2");

Release Notes

Initial release.

Dependencies

This package has no dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version History

Version Downloads Last updated
1.1.1 179 5/27/2020
1.1.0 50 5/14/2020
1.0.1 77 5/7/2020
1.0.0 77 5/7/2020