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annotate src/luan/interp/Chunk.java @ 24:7ee247560db5

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add VarArgs git-svn-id: https://luan-java.googlecode.com/svn/trunk@25 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Thu, 06 Dec 2012 04:40:54 +0000
parents 2446c1755d9b
children 5cf15507d77e
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1 package luan.interp;
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3 import luan.LuaState;
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4 import luan.LuaException;
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5 import luan.LuaClosure;
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8 public final class Chunk implements Expr {
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9 public final Stmt block;
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10 public final int stackSize;
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11 public final int numArgs;
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12 public final boolean isVarArg;
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14 Chunk(Stmt block,int stackSize,int numArgs,boolean isVarArg) {
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15 this.block = block;
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16 this.stackSize = stackSize;
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17 this.numArgs = numArgs;
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18 this.isVarArg = isVarArg;
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19 fixReturns(block);
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20 }
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22 private static void fixReturns(Stmt stmt) {
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23 if( stmt instanceof ReturnStmt ) {
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24 ReturnStmt rs = (ReturnStmt)stmt;
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25 rs.throwReturnException = false;
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26 } else if( stmt instanceof Block ) {
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27 Block b = (Block)stmt;
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28 fixReturns( b.stmts[b.stmts.length-1] );
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29 } else if( stmt instanceof IfStmt ) {
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30 IfStmt is = (IfStmt)stmt;
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31 fixReturns( is.thenStmt );
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32 fixReturns( is.elseStmt );
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33 }
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34 }
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36 public LuaClosure newClosure(LuaState lua) {
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37 return new LuaClosure(this,lua);
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38 }
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40 @Override public Object eval(LuaState lua) {
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41 return newClosure(lua);
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42 }
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44 }