KParser

Arithmetic Expression Parser Koltin Multi-Platform Library

Features

• Evaluated in Degrees and Radians

• Handle Multiple Operators

  • Minus (-)
  • Plus (+)
  • Multiply (*)
  • Division (/)
  • Power (^)
  • Exponential (E)

• Mathematical Functions

  • Trigonometric (Sin, Cos, Tan, asin,acos,atan)
  • Hyperbolic (Sinh, Cosh, Tanh)
  • Log10,
  • ln (Natural log)
  • Log2()
  • LogX() (where X = base)
  • sqrt(Square root)
  • ! (Factorial)
  • % (Percentage)

• Mathematical Constants

  • PI
  • e

Sample

JVM/Android

val parser = ExpressionParser()
val result = parser.evaluate("sin(PI)+1+cos(PI)")
println(result)
        
// result 0.0

C/C++

build the project with ./gradlew build

Navigate to KParser/build/bin/linux/releaseShared/

Use the generated libkparser_api.h (header file) and libkparser.so (shared object file)

#include <iostream>
#include "libkparser_api.h"

int main() {
    
    libkparser_ExportedSymbols* lib = libkparser_symbols();
    libkparser_kref_io_thelimitbreaker_ExpressionParser kparser = libkparser_kref_io_thelimitbreaker_ExpressionParser();

    double  result = lib->kotlin.root.io.thelimitbreaker.ExpressionParser.evaluate(kparser,"1+sin(PI)+cos(PI)",3);
    std::cout<<result << std::endl;
    return 0;
}

Compiling C/C++ (Command Line)

g++ main.cpp libkparser.so

Compiling C/C++ (CMake config)

Provided libkparser_api.h and libkparser.so are under folder kparser

add_library(kparser SHARED IMPORTED)
set_property(TARGET kparser PROPERTY IMPORTED_LOCATION "${PROJECT_SOURCE_DIR}/kparser/libkparser.so")
add_executable(PROJECT_NAME main.cpp kparser/libkparser_api.h)
target_link_libraries(${PROJECT_NAME} kparser)

Usage with Gradle(JVM/Android)

 // In root build.gradle
 repositories {
        maven {
            url  "https://dl.bintray.com/kaendagger/KParser"
        }
  }
  
  //Add in the dependencies
  dependencies{
         implementation 'io.kaen.dagger:KParser-jvm:0.1.1'
  }
    

Android App sample : Kalc-Android

Native App Sample : Kalc-Native

Work Left

• Add usage with JS
• Add support Windows and iOS