From efab78668519c0b74f28f2cb1132e6bad4ef7e20 Mon Sep 17 00:00:00 2001
From: lempinen <lempinen@ac1ea38d-2e2b-0410-8846-a27921b304fc>
Date: Fri, 20 May 2011 07:55:54 +0000
Subject: [PATCH] git-svn-id:
 https://www.simantics.org/svn/simantics/sysdyn/trunk@21040
 ac1ea38d-2e2b-0410-8846-a27921b304fc

---
 .../simantics/sysdyn/manager/SysdynModel.java | 41 ++++++++++++++++++-
 1 file changed, 40 insertions(+), 1 deletion(-)

diff --git a/org.simantics.sysdyn/src/org/simantics/sysdyn/manager/SysdynModel.java b/org.simantics.sysdyn/src/org/simantics/sysdyn/manager/SysdynModel.java
index 748841a9..40bbf5ae 100644
--- a/org.simantics.sysdyn/src/org/simantics/sysdyn/manager/SysdynModel.java
+++ b/org.simantics.sysdyn/src/org/simantics/sysdyn/manager/SysdynModel.java
@@ -11,9 +11,11 @@
  *******************************************************************************/
 package org.simantics.sysdyn.manager;
 
+import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.io.StringReader;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -285,8 +287,45 @@ public class SysdynModel implements IMappingListener, IModel {
 	}
 
 	private boolean hasStructureChanged(String modelText, Map<String, String> inits) {
-		if (!modelText.equals(previousModelStructure))
+		
+		
+		BufferedReader current = new BufferedReader(
+				new StringReader(modelText));
+		BufferedReader previous = new BufferedReader(
+				new StringReader(previousModelStructure));
+
+		String c, p;
+		try {
+			c = current.readLine();
+			p = previous.readLine();
+			
+			while (c != null && p != null) {
+				if(!c.equals(p)) {
+					if(c.contains("parameter") && p.contains("parameter")) {
+						int i = c.indexOf("=");
+						if(!c.substring(0, i).equals(p.substring(0, i))) {
+							// different parameter definition
+							return true;
+						}
+					} else {
+						// other than a line containing parameters differs
+						return true;
+					}
+				}
+				c = current.readLine();
+				p = previous.readLine();
+			}
+			
+			if((c == null && p != null) || (c != null && p == null)) {
+				// different lengths
+				return true;
+			}
+
+		} catch(IOException e) {
+			//e.printStackTrace();
 			return true;
+		}
+
 		for(String key : previousImportantInits.keySet()) {
 			if(!inits.containsKey(key) || !previousImportantInits.get(key).equals(inits.get(key)))
 				return true;
-- 
2.47.1