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view src/luan/interp/UnmExpr.java @ 7:bca8fc5d928b
work on expressions
git-svn-id: https://luan-java.googlecode.com/svn/trunk@8 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Tue, 20 Nov 2012 10:06:27 +0000 |
parents | |
children | b7d7069fee58 |
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package luan.interp; import luan.Lua; import luan.LuaNumber; import luan.LuaException; import luan.LuaState; // unary minus final class UnmExpr extends UnaryOpExpr { UnmExpr(Expr op) { super(op); } @Override Object eval(LuaState lua) throws LuaException { double n = Lua.checkNumber(op.eval(lua)).value(); return new LuaNumber( -n ); } }