From 31f9de4724c8c794527275aa3dccf07c0e362d77 Mon Sep 17 00:00:00 2001
From: acolyer <acolyer>
Date: Sat, 23 Aug 2003 11:57:20 +0000
Subject: added a cache by handle to avoid terrible performance on larger
 projects

---
 .../aspectj/asm/internal/AspectJElementHierarchy.java   | 17 +++++++++++++++--
 asm/src/org/aspectj/asm/internal/ProgramElement.java    | 14 +++++++++++++-
 2 files changed, 28 insertions(+), 3 deletions(-)

(limited to 'asm')

diff --git a/asm/src/org/aspectj/asm/internal/AspectJElementHierarchy.java b/asm/src/org/aspectj/asm/internal/AspectJElementHierarchy.java
index e8d2f9902..f33a5b9c8 100644
--- a/asm/src/org/aspectj/asm/internal/AspectJElementHierarchy.java
+++ b/asm/src/org/aspectj/asm/internal/AspectJElementHierarchy.java
@@ -17,7 +17,6 @@ import java.io.*;
 import java.util.*;
 
 import org.aspectj.asm.*;
-import org.aspectj.asm.IProgramElement.Kind;
 import org.aspectj.bridge.*;
 
 /**
@@ -29,6 +28,7 @@ public class AspectJElementHierarchy implements IHierarchy {
     protected String configFile = null;
 
     private Map fileMap = null;
+    private Map handleMap = null;
     
 	public IProgramElement getElement(String handle) {
 		throw new RuntimeException("unimplemented");
@@ -40,6 +40,7 @@ public class AspectJElementHierarchy implements IHierarchy {
 
     public void setRoot(IProgramElement root) {
         this.root = root;
+        handleMap = new HashMap();
     }
 
 	public void addToFileMap( Object key, Object value ){
@@ -270,12 +271,20 @@ public class AspectJElementHierarchy implements IHierarchy {
 	
 	// TODO: optimize this lookup
 	public IProgramElement findElementForHandle(String handle) {
+		// try the cache first...
+		IProgramElement ret = (IProgramElement) handleMap.get(handle);
+		if (ret != null) return ret;
+		
 		StringTokenizer st = new StringTokenizer(handle, ProgramElement.ID_DELIM);
 		String file = st.nextToken();
 		int line = new Integer(st.nextToken()).intValue();
 		int col = new Integer(st.nextToken()).intValue();
 		// TODO: use column number when available
-		return findElementForSourceLine(file, line);
+		ret = findElementForSourceLine(file, line);
+		if (ret != null) { 
+			cache(handle,(ProgramElement)ret);
+		}
+		return ret;
 		
 //		IProgramElement parent = findElementForType(packageName, typeName);
 //		if (parent == null) return null;
@@ -305,5 +314,9 @@ public class AspectJElementHierarchy implements IHierarchy {
 //		}
 //		return null;
 //	}
+
+	protected void cache(String handle, ProgramElement pe) {
+		handleMap.put(handle,pe);
+	}
 }
 
diff --git a/asm/src/org/aspectj/asm/internal/ProgramElement.java b/asm/src/org/aspectj/asm/internal/ProgramElement.java
index fb89d06c3..ecf1c862d 100644
--- a/asm/src/org/aspectj/asm/internal/ProgramElement.java
+++ b/asm/src/org/aspectj/asm/internal/ProgramElement.java
@@ -88,6 +88,7 @@ public class ProgramElement implements IProgramElement {
 		this.formalComment = formalComment;
 		this.modifiers = genModifiers(modifiers);
 		this.accessibility = genAccessibility(modifiers);
+		cacheByHandle();
 	}
 	
 	/**
@@ -115,6 +116,7 @@ public class ProgramElement implements IProgramElement {
 		this.packageName = packageName;
 		this.formalComment = formalComment;
 		this.relations = relations;
+		cacheByHandle();
 	}
 
 	public List getModifiers() {
@@ -395,7 +397,7 @@ public class ProgramElement implements IProgramElement {
 			} else {
 				label = parent.getName() + '.';	
 			}
-		} else if (kind == Kind.CLASS || kind == kind.ASPECT) {
+		} else if (kind == Kind.CLASS || kind == Kind.ASPECT) {
 			label = "";
 		} else {
 			label = parent.getName() + '.';
@@ -469,5 +471,15 @@ public class ProgramElement implements IProgramElement {
 	public void setDetails(String string) {
 		details = string;
 	}
+	
+	/** AMC added to speed up findByHandle lookups in AspectJElementHierarchy */
+	private void cacheByHandle() {
+		String handle = getHandleIdentifier();
+		if (handle != null) {
+			AspectJElementHierarchy hierarchy = (AspectJElementHierarchy) 
+				AsmManager.getDefault().getHierarchy();
+			hierarchy.cache(handle,this);
+		}
+	}
 }
 
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