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view core/src/luan/impl/LuanCompiler.java @ 327:0be73ac9103d
handle circular package loading
git-svn-id: https://luan-java.googlecode.com/svn/trunk@328 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Thu, 19 Mar 2015 05:36:05 +0000 |
parents | 7f7708e8fdd4 |
children | 23b99a5039b5 |
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package luan.impl; import luan.LuanFunction; import luan.LuanState; import luan.LuanException; import luan.LuanSource; import luan.LuanElement; import luan.LuanTable; import luan.Luan; import luan.modules.JavaLuan; import luan.modules.PackageLuan; import java.util.Map; public final class LuanCompiler { private LuanCompiler() {} // never public static LuanFunction compile(LuanState luan,LuanSource src,LuanTable env,boolean allowExpr) throws LuanException { if( env==null ) env = Luan.newTable(); UpValue.Getter envGetter = new UpValue.ValueGetter(env); LuanParser parser = new LuanParser(src,envGetter); parser.addVar( "java", JavaLuan.javaFn ); parser.addVar( "require", PackageLuan.requireFn ); FnDef fnDef = parse(luan,parser,allowExpr); final LuanStateImpl luanImpl = (LuanStateImpl)luan; return new Closure(luanImpl,fnDef); } private static FnDef parse(LuanState luan,LuanParser parser,boolean allowExpr) throws LuanException { try { if( allowExpr ) { FnDef fnDef = parser.Expression(); if( fnDef != null ) return fnDef; } return parser.RequiredModule(); } catch(ParseException e) { //e.printStackTrace(); LuanElement le = new LuanSource.CompilerElement(parser.source); throw luan.bit(le).exception( e.getFancyMessage() ); } } public static LuanState newLuanState() { return new LuanStateImpl(); } }