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annotate core/src/luan/LuanState.java @ 404:d55e873e1f0d

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metatables now only apply to tables
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 29 Apr 2015 07:04:40 -0600
parents 8f1be9704726
children 1b38de2b1845
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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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14 import luan.modules.JavaLuan;
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15 import luan.modules.StringLuan;
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16 import luan.modules.BinaryLuan;
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19 public abstract class LuanState implements DeepCloneable<LuanState> {
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21 final List<StackTraceElement> stackTrace = new ArrayList<StackTraceElement>();
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22
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23 private LuanTableImpl registry;
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25 protected LuanState() {
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26 registry = new LuanTableImpl();
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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 }
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35 public abstract LuanTable currentEnvironment();
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36 public abstract LuanSource currentSource();
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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 Object require(String modName) throws LuanException {
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43 return PackageLuan.require(this,modName);
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44 }
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45
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46 public static LuanState newInstance() {
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47 return LuanCompiler.newLuanState();
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5c9cadd0acce move standard calls from CmdLine to LuanState
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48 }
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50 public final Object eval(String cmd) throws LuanException {
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51 return eval(cmd,new LuanTableImpl());
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52 }
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54 public final Object eval(String cmd,LuanTable env) throws LuanException {
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55 LuanFunction fn = BasicLuan.load(this,cmd,"eval",env,true);
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56 return call(fn);
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57 }
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59 public final LuanBit bit(LuanElement el) {
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60 return new LuanBit(this,el);
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61 }
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62
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63 public final static Object getHandler(String op,LuanTable table) {
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64 LuanTable t = table.getMetatable();
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65 return t==null ? null : t.get(op);
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66 }
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67
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68 // convenience methods
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69
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70 private final LuanBit JAVA = bit(LuanElement.JAVA);
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71
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72 public LuanException exception(Object msg) {
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73 return JAVA.exception(msg);
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74 }
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75
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76 public Object call(LuanFunction fn) throws LuanException {
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77 return call(fn,null,LuanFunction.NOTHING);
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78 }
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79
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80 public Object call(LuanFunction fn,String fnName) throws LuanException {
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81 return call(fn,fnName,LuanFunction.NOTHING);
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82 }
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83
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84 public Object call(LuanFunction fn,Object[] args) throws LuanException {
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85 return call(fn,null,args);
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86 }
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87
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88 public Object call(LuanFunction fn,String fnName,Object[] args) throws LuanException {
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89 return JAVA.call(fn,fnName,args);
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90 }
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91
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92 public LuanFunction checkFunction(Object obj) throws LuanException {
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93 return JAVA.checkFunction(obj);
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94 }
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95
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96 public String toString(Object obj) throws LuanException {
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97 return JAVA.toString(obj);
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98 }
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99
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100 public String repr(Object obj) throws LuanException {
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101 return JAVA.repr(obj);
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102 }
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103
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104 public boolean isLessThan(Object o1,Object o2) throws LuanException {
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105 return JAVA.isLessThan(o1,o2);
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106 }
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107 }