Mercurial Hosting > luan
annotate core/src/luan/modules/PackageLuan.java @ 278:4a0a84c38617
don't expose Package.load_lib()
git-svn-id: https://luan-java.googlecode.com/svn/trunk@279 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Sun, 23 Nov 2014 02:42:29 +0000 |
parents | 8ac3eaf8ecd9 |
children | 7ea6dfdf81ba |
rev | line source |
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1 package luan.modules; |
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2 |
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3 import java.io.IOException; |
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4 import java.util.Arrays; |
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5 import java.util.Collections; |
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6 import java.util.List; |
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7 import luan.Luan; |
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8 import luan.LuanState; |
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9 import luan.LuanTable; |
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10 import luan.LuanFunction; |
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11 import luan.LuanJavaFunction; |
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12 import luan.LuanElement; |
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13 import luan.LuanException; |
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14 |
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15 |
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16 public final class PackageLuan { |
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17 |
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18 public static final LuanFunction LOADER = new LuanFunction() { |
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19 @Override public Object call(LuanState luan,Object[] args) { |
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20 LuanTable module = Luan.newTable(); |
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21 module.put( "loaded", loaded(luan) ); |
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22 try { |
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23 module.put("require",requireFn); |
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24 add( module, "load", LuanState.class, String.class ); |
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25 // add( module, "load_lib", LuanState.class, String.class ); |
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26 add( module, "search", LuanState.class, String.class ); |
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27 } catch(NoSuchMethodException e) { |
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28 throw new RuntimeException(e); |
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29 } |
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30 return module; |
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31 } |
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32 }; |
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33 |
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34 public static final LuanFunction requireFn; |
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35 static { |
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36 try { |
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37 requireFn = new LuanJavaFunction(PackageLuan.class.getMethod("require",LuanState.class,String.class),null); |
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38 } catch(NoSuchMethodException e) { |
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39 throw new RuntimeException(e); |
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40 } |
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41 } |
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42 |
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43 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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44 t.put( method, new LuanJavaFunction(PackageLuan.class.getMethod(method,parameterTypes),null) ); |
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45 } |
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46 |
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47 public static LuanTable loaded(LuanState luan) { |
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48 return luan.registryTable("Package.loaded"); |
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49 } |
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50 |
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51 private static Object pkg(LuanState luan,String key) { |
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52 LuanTable t = (LuanTable)loaded(luan).get("Package"); |
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53 return t==null ? null : t.get(key); |
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54 } |
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55 |
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56 public static Object require(LuanState luan,String modName) throws LuanException { |
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57 Object mod = load(luan,modName); |
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58 if( mod==null ) |
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59 throw luan.exception( "module '"+modName+"' not found" ); |
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60 return mod; |
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61 } |
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62 |
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63 public static Object load(LuanState luan,String modName) throws LuanException { |
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64 LuanTable loaded = loaded(luan); |
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65 Object mod = loaded.get(modName); |
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66 if( mod == null ) { |
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67 Object[] a = search(luan,modName); |
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68 if( a == null ) |
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69 return null; |
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70 LuanFunction loader = (LuanFunction)a[0]; |
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71 a[0] = modName; |
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72 mod = Luan.first(luan.call(loader,"<require \""+modName+"\">",a)); |
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73 if( mod != null ) { |
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74 loaded.put(modName,mod); |
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75 } else { |
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76 mod = loaded.get(modName); |
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77 if( mod==null ) { |
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78 mod = true; |
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79 loaded.put(modName,mod); |
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80 } |
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81 } |
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82 } |
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83 return mod; |
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84 } |
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85 |
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86 static LuanFunction loader(LuanState luan,String name,boolean loading) throws LuanException { |
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87 LuanTable t = IoLuan.Uri(luan,name,loading); |
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88 if( t == null ) |
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89 return null; |
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90 LuanFunction loader = (LuanFunction)t.get("loader"); |
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91 if( loader == null ) |
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92 return null; |
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93 return (LuanFunction)Luan.first(luan.call(loader,new Object[]{name})); |
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94 } |
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95 |
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96 public static Object[] search(LuanState luan,String modName) throws LuanException { |
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97 LuanFunction fn = loader(luan,modName,true); |
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98 return fn==null ? null : new Object[]{fn,modName}; |
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99 } |
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100 |
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101 |
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102 static LuanFunction load_lib(LuanState luan,String path) |
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103 throws ClassNotFoundException, NoSuchFieldException, IllegalAccessException, LuanException |
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104 { |
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105 int i = path.lastIndexOf('.'); |
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106 String clsPath = path.substring(0,i); |
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107 String fld = path.substring(i+1); |
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108 Class cls = Class.forName(clsPath); |
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109 return (LuanFunction)cls.getField(fld).get(null); |
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110 } |
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111 |
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112 } |