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view src/luan/interp/Chunk.java @ 31:5cf15507d77e
separate interpreter from interface
git-svn-id: https://luan-java.googlecode.com/svn/trunk@32 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Thu, 13 Dec 2012 02:50:04 +0000 |
parents | 7ee247560db5 |
children | c3eab5a3ce3c |
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package luan.interp; import luan.LuaException; final class Chunk implements Expr { public final Stmt block; public final int stackSize; public final int numArgs; public final boolean isVarArg; Chunk(Stmt block,int stackSize,int numArgs,boolean isVarArg) { this.block = block; this.stackSize = stackSize; this.numArgs = numArgs; this.isVarArg = isVarArg; fixReturns(block); } private static void fixReturns(Stmt stmt) { if( stmt instanceof ReturnStmt ) { ReturnStmt rs = (ReturnStmt)stmt; rs.throwReturnException = false; } else if( stmt instanceof Block ) { Block b = (Block)stmt; fixReturns( b.stmts[b.stmts.length-1] ); } else if( stmt instanceof IfStmt ) { IfStmt is = (IfStmt)stmt; fixReturns( is.thenStmt ); fixReturns( is.elseStmt ); } } LuaClosure newClosure(LuaStateImpl lua) { return new LuaClosure(this,lua); } @Override public Object eval(LuaStateImpl lua) { return newClosure(lua); } }