Expression parser library for Android.

Posted by Malx on Stack Overflow See other posts from Stack Overflow or by Malx
Published on 2010-04-15T11:03:22Z Indexed on 2010/04/15 11:13 UTC
Read the original article Hit count: 177

Filed under:

android

|

parser

What is the best way to evaluate simple conditional statements like:

"a>b" ?
"x-4<10+y & y>x" ?

Expressions are loaded from external file. Variables are set in application. Syntax used is not essential. It may be "&" or "and" or any other supported with language/library.

I need to take different action depending on result of evaluation - is it true or false.

Could I use any parser already included with Andorid?

Is there some way to use JS "eval" from browser component?

Is it possible to use sqlite expressions to get true/false result without selecting anything?

Those libraries are implemented in native code. Will it be faster and less battery expensive?

© Stack Overflow or respective owner

Related posts about android

Please verify my layout: bottom button keeps coming up over keyboard

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi everyone, I have a layout which does almost what I want. There's just one bug regarding the button at the bottom. I should stay at the bottom at all times. But whenever I bring up the soft-keyboard the button will be displayed above the keyboard. This is not what I want but it should become covered… >>> More
Android programming. Application stopped unexpectedly.

as seen on Stack Overflow - Search for 'Stack Overflow'
I've just created a prototype of interface for my android app and tried to run it. Unfortunately I get an error that my app has stopped unexpectedly (my reputation doesn't allow me to post images so follow my links): screenshot of error message This is layout mode of editing. Everything looks as… >>> More
Listview Row Overlap Problem

as seen on Stack Overflow - Search for 'Stack Overflow'
I just updated my app and I am getting some odd complaints from people who update it. I am only getting complaints from people with non-stock android phones (phones that manufacturers have modified...HTC phones, cliq, pulse, etc), other phones like the Droid, Nexus work fine. My app (Photo Frame Deluxe)… >>> More
Why are some of my view not aligned correctly at the bottom of my relative layout?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have problems getting some of my views aligned in a relative layout that I use inside a row of my listview. Here is a screenshot from the layout builder in Eclipse, this is what I think it should look like: The next image is from the emulator. Now the TestTestTest View is at the top and covers… >>> More
Android RatingBar weirdness: Whenever I add a RatingBar to my layout, a bunch of the generated tags,

as seen on Stack Overflow - Search for 'Stack Overflow'
Whenever I use a RatingBar view in my layout, I suddenly get all kinds of compile errors. I'm using Android 2.0, but I've also tried 2.0.1, and 2.1, without joy. I also get a message: Shader 'android.graphics.BitmapShader' is not supported in Layout Editor, and an odd warning which may or maynot be… >>> More

Related posts about parser

Core Data error when assigning variable with one-to-one relationship

as seen on Stack Overflow - Search for 'Stack Overflow'
I tried to assign a managed object (C) with its property another managed object (B) (a one-to-one relationship) in which this other managed object (B) has a to-many relationship with one other managed object (A). There is an error from this assignment in which I copied as follows: #0 0x020e53a7… >>> More
RapidXML - does not compile ?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am novice to rapidXML but first impresion was not positive, I made simple Visual Studio 6 C++ Hello World Application and added RapidXML hpp files to project and in main.cpp I put: #include "stdafx.h" #include < iostream > #include < string > #include "rapidxml.hpp" using namespace… >>> More
exception occured in java compiler

as seen on Stack Overflow - Search for 'Stack Overflow'
I am a beginner in Java.I have JDK1.7.0 installed on windows 7 OS.I just wrote a sample java file where the file was not getting compiled and throws the below error. Sam.java:5: ';' expected Sample p = New Sample(); An exception has occurred… >>> More
Coding a parser for a domain specific language in Java

as seen on Stack Overflow - Search for 'Stack Overflow'
We want to design a simple domain specific language for writing test scripts to automatically test a XML-based interface of one of our applications. A sample test would be: Get an input XML file from network shared folder or subversion repository Import the XML file using the interface Check if… >>> More
Doxygen C++ comment string parser in python?

as seen on Stack Overflow - Search for 'Stack Overflow'
Does anybody know of a python module to parse a doxygen style C++ comment string? I mean a string like this (simple example): /** * A constructor. * A more elaborate description of the constructor. * @param param1 test1 * @param param2 test2 */ and I would like to extract the brief… >>> More