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view src/luan/interp/SubExpr.java @ 11:b7d7069fee58
add assignment statement and CmdLine
git-svn-id: https://luan-java.googlecode.com/svn/trunk@12 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Thu, 22 Nov 2012 10:51:56 +0000 |
parents | 7a2cdbc5767f |
children | 5cf15507d77e |
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package luan.interp; import luan.Lua; import luan.LuaNumber; import luan.LuaException; import luan.LuaState; final class SubExpr extends BinaryOpExpr { SubExpr(Expr op1,Expr op2) { super(op1,op2); } @Override public Object eval(LuaState lua) throws LuaException { double n1 = Lua.checkNumber(op1.eval(lua)).value(); double n2 = Lua.checkNumber(op2.eval(lua)).value(); return new LuaNumber( n1 - n2 ); } }