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annotate src/luan/Luan.java @ 134:b585d0915621

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remove CmdLine.java and move code to Luan.java git-svn-id: https://luan-java.googlecode.com/svn/trunk@135 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Wed, 11 Jun 2014 05:24:11 +0000
parents 8c706d6eb5dc
children 3119326260ea
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
1 package luan;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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2
134
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 113
diff changeset
3 import luan.lib.BasicLib;
b585d0915621 remove CmdLine.java and move code to Luan.java
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4
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5
66
f7e17cfb35f9 minor toString() improvement
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
6 public final class Luan {
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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7 public static final String version = "Luan 0.1";
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2df768b926aa start Luan
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8
134
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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9 public static void main(String[] args) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 113
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10 LuanState luan = LuanState.newStandard();
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 113
diff changeset
11 try {
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 113
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12 LuanFunction standalone = (LuanFunction)BasicLib.load_java_resource(luan,"luan/tools/cmd_line.luan");
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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13 luan.call(standalone,args);
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 113
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14 } catch(LuanException e) {
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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15 // System.err.println(e.getMessage());
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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16 e.printStackTrace();
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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17 System.exit(-1);
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 113
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18 }
b585d0915621 remove CmdLine.java and move code to Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 113
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19 }
b585d0915621 remove CmdLine.java and move code to Luan.java
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20
111
2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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21 public static Object first(Object obj) {
2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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22 if( !(obj instanceof Object[]) )
2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
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23 return obj;
2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
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24 Object[] a = (Object[])obj;
2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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25 return a.length==0 ? null : a[0];
2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
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26 }
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27
2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
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28 public static Object[] array(Object obj) {
2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
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29 return obj instanceof Object[] ? (Object[])obj : new Object[]{obj};
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parents: 105
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30 }
2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
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31
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2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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32 public static String type(Object obj) {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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33 if( obj == null )
105
a9560839104d minor - change type names to lower case like Lua
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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34 return "nil";
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2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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35 if( obj instanceof String )
105
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parents: 104
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36 return "string";
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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37 if( obj instanceof Boolean )
105
a9560839104d minor - change type names to lower case like Lua
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 104
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38 return "boolean";
46
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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39 if( obj instanceof Number )
105
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 104
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40 return "number";
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b2551f00bc51 fix type()
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 66
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41 if( obj instanceof LuanTable )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 104
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42 return "table";
85
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 66
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43 if( obj instanceof LuanFunction )
105
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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44 return "function";
113
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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45 if( obj instanceof byte[] )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 111
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46 return "binary";
105
a9560839104d minor - change type names to lower case like Lua
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 104
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47 return "userdata";
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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48 }
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49
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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50 public static boolean toBoolean(Object obj) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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51 return obj != null && !Boolean.FALSE.equals(obj);
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parents: 3
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52 }
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parents: 3
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53
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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54 public static String asString(Object obj) {
46
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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55 if( obj instanceof String )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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56 return (String)obj;
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parents: 44
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57 if( obj instanceof Number )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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58 return toString((Number)obj);
10
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parents: 7
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59 return null;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 7
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60 }
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parents: 7
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61
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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62 public static Number toNumber(Object obj) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 35
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63 return toNumber(obj,null);
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parents: 35
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64 }
2a35154aec14 implement more basic lib functions
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parents: 35
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65
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parents: 44
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66 public static Number toNumber(Object obj,Integer base) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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67 if( obj instanceof Number )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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68 return (Number)obj;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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69 if( obj instanceof String ) {
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70 String s = (String)obj;
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71 try {
36
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parents: 35
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72 if( base==null )
46
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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73 return Double.valueOf(s);
36
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74 else
46
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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75 return Long.valueOf(s,base);
1
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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76 } catch(NumberFormatException e) {}
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77 }
3
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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78 return null;
1
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79 }
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80
46
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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81 public static String toString(Number n) {
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parents: 44
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82 if( n instanceof Integer )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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83 return n.toString();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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84 String s = n.toString();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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85 int iE = s.indexOf('E');
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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86 String ending = null;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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87 if( iE != -1 ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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88 ending = s.substring(iE);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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89 s = s.substring(0,iE);
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parents: 44
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90 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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91 if( s.endsWith(".0") )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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92 s = s.substring(0,s.length()-2);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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93 if( ending != null )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
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94 s += ending;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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95 return s;
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parents: 44
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96 }
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97
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98 public static Integer asInteger(Object obj) {
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parents: 44
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99 if( obj instanceof Integer )
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100 return (Integer)obj;
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101 if( !(obj instanceof Number) )
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102 return null;
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103 Number n = (Number)obj;
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104 int i = n.intValue();
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105 return i==n.doubleValue() ? Integer.valueOf(i) : null;
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106 }
66
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107
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108 public static String toString(Object obj) {
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109 if( obj == null )
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110 return "nil";
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111 if( obj instanceof Number )
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112 return Luan.toString((Number)obj);
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113 if( obj instanceof LuanException ) {
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114 LuanException le = (LuanException)obj;
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115 return le.getMessage();
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116 }
113
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117 if( obj instanceof byte[] )
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118 return "binary: " + Integer.toHexString(obj.hashCode());
66
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119 return obj.toString();
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120 }
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121
88
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122 public static String stringEncode(String s) {
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123 s = s.replace("\\","\\\\");
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124 s = s.replace("\u0007","\\a");
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125 s = s.replace("\b","\\b");
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126 s = s.replace("\f","\\f");
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127 s = s.replace("\n","\\n");
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128 s = s.replace("\r","\\r");
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129 s = s.replace("\t","\\t");
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130 s = s.replace("\u000b","\\v");
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131 s = s.replace("\"","\\\"");
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132 return s;
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133 }
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134
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135 public static String repr(Object obj) {
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136 if( obj == null )
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137 return "nil";
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138 if( obj instanceof Number )
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139 return Luan.toString((Number)obj);
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140 if( obj instanceof String )
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141 return "\"" + stringEncode((String)obj) + "\"";
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142 if( obj instanceof LuanRepr )
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143 return ((LuanRepr)obj).repr();
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144 return null;
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145 }
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146
66
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147 private Luan() {} // never
1
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148 }