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annotate core/src/luan/LuanState.java @ 202:75750ceb45ee

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add LuanState.registry git-svn-id: https://luan-java.googlecode.com/svn/trunk@203 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 04 Jul 2014 17:18:39 +0000
parents 9fb218211763
children 5ba136769034
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1 package luan;
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2
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3 import java.io.InputStream;
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4 import java.io.PrintStream;
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5 import java.util.List;
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6 import java.util.ArrayList;
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7 import java.util.Map;
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8 import java.util.LinkedHashMap;
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9 import java.util.Set;
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10 import java.util.HashSet;
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11 import luan.impl.LuanCompiler;
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12 import luan.modules.BasicLuan;
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13 import luan.modules.PackageLuan;
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16 public abstract class LuanState implements DeepCloneable<LuanState> {
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18 final List<StackTraceElement> stackTrace = new ArrayList<StackTraceElement>();
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20 private LuanTable registry;
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21 private LuanTable global;
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23 protected LuanState() {
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24 registry = new LuanTable();
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25 global = new LuanTable();
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26 global.put("_G",global);
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27 }
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29 protected LuanState(LuanState luan) {}
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31 @Override public void deepenClone(LuanState clone,DeepCloner cloner) {
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32 clone.registry = cloner.deepClone(registry);
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33 clone.global = cloner.deepClone(global);
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34 }
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36 public abstract LuanTable currentEnvironment();
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38 public final LuanTable registry() {
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39 return registry;
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40 }
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42 public final LuanTable registryTable(Object key) {
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43 LuanTable tbl = (LuanTable)registry.get(key);
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44 if( tbl == null ) {
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45 tbl = new LuanTable();
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46 registry.put(key,tbl);
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47 }
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48 return tbl;
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49 }
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51 public final LuanTable global() {
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52 return global;
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53 }
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55 public static LuanState newStandard() {
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56 try {
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57 LuanState luan = LuanCompiler.newLuanState();
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58 BasicLuan.do_file(luan,"java:luan/init.luan");
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59 return luan;
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60 } catch(LuanException e) {
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61 throw new RuntimeException(e);
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62 }
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63 }
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64
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65 public final Object eval(String cmd) {
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66 return eval(cmd,new LuanTable());
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67 }
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69 public final Object eval(String cmd,LuanTable env) {
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70 try {
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71 LuanFunction fn = BasicLuan.load(this,cmd,"eval",env,true);
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72 return call(fn);
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73 } catch(LuanException e) {
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74 throw new RuntimeException(e);
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75 }
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76 }
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77
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78 public final LuanTable getMetatable(Object obj) {
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79 return getMetatable(obj,null);
48
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80 }
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81
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82 public abstract LuanTable getMetatable(Object obj,MetatableGetter beforeThis);
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84 public abstract void addMetatableGetter(MetatableGetter mg);
48
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85
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86 public final LuanBit bit(LuanElement el) {
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87 return new LuanBit(this,el);
48
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88 }
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89
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90 public final Object getHandler(String op,Object obj) {
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91 LuanTable t = getMetatable(obj);
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92 return t==null ? null : t.get(op);
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93 }
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94
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95
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96 // convenience methods
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97
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98 private final LuanBit JAVA = bit(LuanElement.JAVA);
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99
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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100 public LuanException exception(Object msg) {
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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101 return JAVA.exception(msg);
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102 }
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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103
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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104 public Object call(LuanFunction fn) throws LuanException {
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105 return call(fn,null,LuanFunction.NOTHING);
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106 }
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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107
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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108 public Object call(LuanFunction fn,String fnName) throws LuanException {
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109 return call(fn,fnName,LuanFunction.NOTHING);
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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110 }
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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111
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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112 public Object call(LuanFunction fn,Object[] args) throws LuanException {
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113 return call(fn,null,args);
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114 }
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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115
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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116 public Object call(LuanFunction fn,String fnName,Object[] args) throws LuanException {
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117 return JAVA.call(fn,fnName,args);
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118 }
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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119
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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120 public LuanFunction checkFunction(Object obj) throws LuanException {
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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121 return JAVA.checkFunction(obj);
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122 }
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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123
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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124 public String toString(Object obj) throws LuanException {
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125 return JAVA.toString(obj);
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126 }
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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127
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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128 public String repr(Object obj) throws LuanException {
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129 return JAVA.repr(obj);
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130 }
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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131
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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132 public boolean isLessThan(Object o1,Object o2) throws LuanException {
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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133 return JAVA.isLessThan(o1,o2);
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134 }
48
64ecb7a3aad7 rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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135 }