diff core/src/luan/impl/SetStmt.java @ 171:3dcb0f9bee82

add core component git-svn-id: https://luan-java.googlecode.com/svn/trunk@172 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Sun, 22 Jun 2014 05:41:22 +0000
parents src/luan/impl/SetStmt.java@4eaee12f6c65
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/src/luan/impl/SetStmt.java	Sun Jun 22 05:41:22 2014 +0000
@@ -0,0 +1,36 @@
+package luan.impl;
+
+import luan.Luan;
+import luan.LuanException;
+
+
+final class SetStmt implements Stmt {
+	private final Settable[] vars;
+	private final Expressions expressions;
+
+	SetStmt(Settable var,Expr expr) {
+		this( new Settable[]{var}, expr );
+	}
+
+	SetStmt(Settable[] vars,Expressions expressions) {
+		this.vars = vars;
+		this.expressions = expressions;
+	}
+
+	@Override public void eval(LuanStateImpl luan) throws LuanException {
+		final Object obj = expressions.eval(luan);
+		if( obj instanceof Object[] ) {
+			Object[] vals = (Object[])obj;
+			for( int i=0; i<vars.length; i++ ) {
+				Object val = i < vals.length ? vals[i] : null;
+				vars[i].set(luan,val);
+			}
+		} else {
+			vars[0].set(luan,obj);
+			for( int i=1; i<vars.length; i++ ) {
+				vars[i].set(luan,null);
+			}
+		}
+	}
+
+}