From 70076bb00bdedb57405ed2ef27e2fec172e2f38a Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Fri, 30 Dec 2011 23:07:59 -0700
Subject: Well, +=, -= on dictionaries/lists works now.

---
 src/variable.cpp | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 70 insertions(+), 1 deletion(-)

(limited to 'src/variable.cpp')

diff --git a/src/variable.cpp b/src/variable.cpp
index 1100c84..0ce9793 100644
--- a/src/variable.cpp
+++ b/src/variable.cpp
@@ -363,8 +363,77 @@ Variable &Variable::operator+=( const Variable &rhs )
 	return *this;
 }
 
+Variable &Variable::operator-=( const Variable &rhs )
+{
+	switch( eType )
+	{
+		case tNull:
+			throw VariableException("You cannot subtract nulls.");
+
+		case tBool:
+			throw VariableException("You cannot subtract bools.");
+
+		case tInt:
+			switch( rhs.eType )
+			{
+				case tInt:
+					iValue -= rhs.iValue;
+					break;
+
+				case tFloat:
+					{
+						double dTmp = iValue;
+						eType = tFloat;
+						fValue = dTmp - rhs.fValue;
+					}
+					break;
+
+				default:
+					throw VariableException("Int -= invalid...");
+			}
+			break;
+
+		case tFloat:
+			switch( rhs.eType )
+			{
+				case tInt:
+					fValue -= rhs.iValue;
+					break;
+
+				case tFloat:
+					fValue -= rhs.fValue;
+					break;
+
+				default:
+					throw VariableException("Int += invalid...");
+			}
+			break;
+
+		case tString:
+			throw VariableException("You cannot subtract strings.");
+			break;
+
+		case tSituation:
+			throw VariableException("You cannot subtract situations.");
+			break;
+		
+		case tVariable:
+			throw VariableException("You cannot subtract variable names.");
+			break;
+
+		case tList:
+			(*lValue).erase( rhs );
+			break;
+
+		case tDictionary:
+			(*hValue).erase( rhs );
+			break;
+	}
+
+	return *this;
+}
+
 /*
-Variable &Variable::operator-=( const Variable &rhs );
 Variable &Variable::operator*=( const Variable &rhs );
 Variable &Variable::operator/=( const Variable &rhs );
 */
-- 
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