安卓ANTLR使工作不正常 [英] android ANTLR make not working properly

问题描述

我想用ANTLR在Android上，我发现这一点： ANTLR和Android

I am trying to use ANTLR on Android, and I found this: ANTLR and Android

下载AntlrJavaRuntime后，我不知道该怎么做，我应该做出这样的：

After downloading the AntlrJavaRuntime I am not sure of what to do, I am supposed to make this:

1. lunch the appropriate target
2. make AntlrJavaRuntime
3. verify that AntlrJavaRuntime.xml was placed in /system/etc/permissions and 
4. AntlrJavaRuntime.jar was placed in /system/framework
5. after this, you can run a normal make

首先，什么是第1步，即使手段？

First of all, what does step 1 even means?

其次，当我尝试这样做：让AntlrJavaRuntime我收到以下错误：

Secondly, when I try doing: make AntlrJavaRuntime I get the following error:

~/AntlrJavaRuntime$ make AntlrJavaRuntime
make: Nothing to be done for `AntlrJavaRuntime'.

这是很难找到这个文件，所以任何帮助，真是AP preciated（或如何获得ANTLR准备的Andr​​oid项目一个明显的例子）。

It's very hard to find documentation about this, so any help is really appreciated (or a clear example of how to get ANTLR ready for an Android project).

推荐答案

嗯，我只是做了一个小测试与普通ANTLR版本，一切都很好。

Well, I just did a little test with a "plain" ANTLR version, and everything went just fine.

下面是我所做的：

创建一个 bk.andabac 的活动命名为一个包，名为 AndAbac （Android的算盘）的新项目名为 AndAbac 。

Create a new project called AndAbac (Android-Abacus) with a package named bk.andabac and an activity called AndAbac.

中创建一个语法文件 Exp.g （说明的这里）系统上的任意位置，并粘贴在它下面的：

Create a grammar file called Exp.g (explanation here) anywhere on your system and paste the following in it:

grammar Exp;

@parser::header {
  package bk.andabac;
}

@lexer::header {
  package bk.andabac;
}

eval returns [double value]
 : exp=additionExp {$value = $exp.value;}
 ;

additionExp returns [double value]
 : m1=multiplyExp       {$value =  $m1.value;} 
   ( '+' m2=multiplyExp {$value += $m2.value;} 
   | '-' m2=multiplyExp {$value -= $m2.value;}
   )* 
 ;

multiplyExp returns [double value]
 : a1=atomExp       {$value =  $a1.value;}
   ( '*' a2=atomExp {$value *= $a2.value;} 
   | '/' a2=atomExp {$value /= $a2.value;}
   )* 
 ;

atomExp returns [double value]
 : n=Number                {$value = Double.parseDouble($n.text);}
 | '(' exp=additionExp ')' {$value = $exp.value;}
 ;

Number
 : ('0'..'9')+ ('.' ('0'..'9')+)?
 ;

WS  
 : (' ' | '\t' | '\r'| '\n') {$channel=HIDDEN;}
 ;

3下载ANTLR和放大器;生成词法/语法分析器

下载ANTLR这里：<一href="http://www.antlr3.org/download/antlr-3.3-complete.jar">http://www.antlr3.org/download/antlr-3.3-complete.jar并把它放在同一目录下 Exp.g 文件。 （此处解释）生成词法和语法分析器，并复制生成的的.java 文件到以下文件夹在你的Andr​​oid项目：的src / BK / andabac 。同时把这个ANTLR罐子到你的Andr​​oid项目的类路径。

3 download ANTLR & generate lexer/parser

Download ANTLR here: http://www.antlr3.org/download/antlr-3.3-complete.jar and put it in the same directory as your Exp.g file. Generate a lexer and parser (explanation here) and copy the generated .java files to the following folder in your Android project: src/bk/andabac. Also put this ANTLR jar to the classpath of your Android project.

粘贴 RES /布局/ main.xml中如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <EditText
        android:id="@+id/input_text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="5 * (8 + 2)"
        />
    <Button
        android:id="@+id/parse_button"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        android:text="eval" />
    <TextView
        android:id="@+id/output_text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text=""
        />
</LinearLayout>

和的src / BK / andabac / AndAbac.java 如下：

package bk.andabac;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.CommonTokenStream;
import org.antlr.runtime.RecognitionException;

public class AndAbac extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        final Button button = (Button)findViewById(R.id.parse_button);

        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {

                EditText in = (EditText)findViewById(R.id.input_text);
                TextView out = (TextView)findViewById(R.id.output_text);

                String source = in.getText().toString();
                ExpLexer lexer = new ExpLexer(new ANTLRStringStream(source));
                ExpParser parser = new ExpParser(new CommonTokenStream(lexer));

                try {
                    out.setText(source + " = " + parser.eval());
                }
                catch (RecognitionException e) {
                    out.setText("Oops: " + e.getMessage());
                }
            }
        });
    }
}

5的测试应用程序

无论是运行在模拟器的项目，或创建一个APK文件和Android设备（我测试了，都工作）上安装此。你会看到$ P $经过以下pssing的<大骨节病>评估键：

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