Mercurial Hosting > luan
view core/src/luan/LuanState.java @ 404:d55e873e1f0d
metatables now only apply to tables
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 29 Apr 2015 07:04:40 -0600 |
parents | 8f1be9704726 |
children | 1b38de2b1845 |
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package luan; import java.io.InputStream; import java.io.PrintStream; import java.util.List; import java.util.ArrayList; import java.util.Map; import java.util.LinkedHashMap; import java.util.Set; import java.util.HashSet; import luan.impl.LuanCompiler; import luan.modules.BasicLuan; import luan.modules.PackageLuan; import luan.modules.JavaLuan; import luan.modules.StringLuan; import luan.modules.BinaryLuan; public abstract class LuanState implements DeepCloneable<LuanState> { final List<StackTraceElement> stackTrace = new ArrayList<StackTraceElement>(); private LuanTableImpl registry; protected LuanState() { registry = new LuanTableImpl(); } protected LuanState(LuanState luan) {} @Override public void deepenClone(LuanState clone,DeepCloner cloner) { clone.registry = cloner.deepClone(registry); } public abstract LuanTable currentEnvironment(); public abstract LuanSource currentSource(); public final LuanTable registry() { return registry; } public final Object require(String modName) throws LuanException { return PackageLuan.require(this,modName); } public static LuanState newInstance() { return LuanCompiler.newLuanState(); } public final Object eval(String cmd) throws LuanException { return eval(cmd,new LuanTableImpl()); } public final Object eval(String cmd,LuanTable env) throws LuanException { LuanFunction fn = BasicLuan.load(this,cmd,"eval",env,true); return call(fn); } public final LuanBit bit(LuanElement el) { return new LuanBit(this,el); } public final static Object getHandler(String op,LuanTable table) { LuanTable t = table.getMetatable(); return t==null ? null : t.get(op); } // convenience methods private final LuanBit JAVA = bit(LuanElement.JAVA); public LuanException exception(Object msg) { return JAVA.exception(msg); } public Object call(LuanFunction fn) throws LuanException { return call(fn,null,LuanFunction.NOTHING); } public Object call(LuanFunction fn,String fnName) throws LuanException { return call(fn,fnName,LuanFunction.NOTHING); } public Object call(LuanFunction fn,Object[] args) throws LuanException { return call(fn,null,args); } public Object call(LuanFunction fn,String fnName,Object[] args) throws LuanException { return JAVA.call(fn,fnName,args); } public LuanFunction checkFunction(Object obj) throws LuanException { return JAVA.checkFunction(obj); } public String toString(Object obj) throws LuanException { return JAVA.toString(obj); } public String repr(Object obj) throws LuanException { return JAVA.repr(obj); } public boolean isLessThan(Object o1,Object o2) throws LuanException { return JAVA.isLessThan(o1,o2); } }