Mercurial Hosting > luan
annotate src/luan/modules/PackageLuan.java @ 897:821e4634b787
remove _reuseAddress
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Thu, 06 Oct 2016 23:52:53 -0600 |
parents | ea1768c00d03 |
children | 0d884377e923 |
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 luan.Luan; |
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7 import luan.LuanState; |
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8 import luan.LuanTable; |
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9 import luan.LuanFunction; |
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10 import luan.LuanJavaFunction; |
798 | 11 import luan.LuanCloner; |
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12 import luan.LuanException; |
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13 |
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14 |
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15 public final class PackageLuan { |
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16 |
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17 public static final LuanFunction requireFn; |
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18 static { |
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19 try { |
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20 requireFn = new LuanJavaFunction(PackageLuan.class.getMethod("require",LuanState.class,String.class),null); |
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21 } catch(NoSuchMethodException e) { |
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22 throw new RuntimeException(e); |
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23 } |
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24 } |
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25 |
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26 public static LuanTable loaded(LuanState luan) { |
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27 LuanTable tbl = (LuanTable)luan.registry().get("Package.loaded"); |
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28 if( tbl == null ) { |
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29 tbl = new LuanTable(); |
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30 luan.registry().put("Package.loaded",tbl); |
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31 } |
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32 return tbl; |
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33 } |
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34 |
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35 public static Object require(LuanState luan,String modName) throws LuanException { |
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36 Object mod = load(luan,modName); |
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37 if( mod.equals(Boolean.FALSE) ) |
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38 throw new LuanException( "module '"+modName+"' not found" ); |
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39 return mod; |
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40 } |
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41 |
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42 public static Object load(LuanState luan,String modName) throws LuanException { |
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43 LuanTable loaded = loaded(luan); |
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44 Object mod = loaded.rawGet(modName); |
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45 if( mod == null ) { |
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46 if( modName.startsWith("java:") ) { |
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47 mod = JavaLuan.load(luan,modName.substring(5)); |
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48 if( mod == null ) |
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49 mod = Boolean.FALSE; |
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50 } else { |
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51 String src = read(luan,modName); |
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52 if( src == null ) { |
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53 mod = Boolean.FALSE; |
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54 } else { |
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55 LuanFunction loader = Luan.load(src,modName); |
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56 mod = Luan.first( |
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57 loader.call(luan,new Object[]{modName}) |
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58 ); |
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59 if( mod == null ) { |
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60 mod = loaded.rawGet(modName); |
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61 if( mod != null ) |
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62 return mod; |
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63 throw new LuanException( "module '"+modName+"' returned nil" ); |
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64 } |
503 | 65 } |
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66 } |
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67 loaded.rawPut(modName,mod); |
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68 } |
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69 return mod; |
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70 } |
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71 |
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72 static String read(LuanState luan,String uri) throws LuanException { |
722 | 73 LuanTable t = IoLuan.uri(luan,uri,null); |
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74 if( t == null ) |
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75 return null; |
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76 /* |
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77 LuanFunction existsFn = (LuanFunction)t.get(luan,"exists"); |
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78 boolean exists = (Boolean)Luan.first(existsFn.call(luan)); |
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79 if( !exists ) |
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80 return null; |
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81 LuanFunction reader = (LuanFunction)t.get(luan,"read_text"); |
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82 return (String)Luan.first(reader.call(luan)); |
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83 */ |
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84 IoLuan.LuanIn in = (IoLuan.LuanIn)t.rawGet("java"); |
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85 try { |
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86 if( !in.exists() ) |
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87 return null; |
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88 return in.read_text(); |
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89 } catch(IOException e) { |
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90 throw new LuanException(e); |
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91 } |
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92 } |
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93 |
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94 public static void enableLoad(LuanState luan,String... mods) throws LuanException { |
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95 if( !luan.isLocked ) |
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96 return; |
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97 LuanTable loaded = loaded(luan); |
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98 for( String mod : mods ) { |
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99 if( loaded.rawGet(mod) == null ) { |
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100 luan.isLocked = false; |
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101 luan.deepenClone(luan,new LuanCloner(LuanCloner.Type.COMPLETE)); |
9c13a15a4002
Package.load() now returns false instead of null, and caches the result. This cleans up the luan.isLocked issues.
Franklin Schmidt <fschmidt@gmail.com>
parents:
798
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changeset
|
102 break; |
798 | 103 } |
104 } | |
105 } | |
106 | |
73
f86e4f77ef32
add package module
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
107 } |