Give transient generated units a real source location & precompute hash while source is available.

Review by: bobv

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@6696 8db76d5a-ed1c-0410-87a9-c151d255dfc7

dev/core/src/com/google/gwt/dev/javac/StandardGeneratorContext.java

diff --git a/dev/core/src/com/google/gwt/dev/javac/StandardGeneratorContext.java b/dev/core/src/com/google/gwt/dev/javac/StandardGeneratorContext.java
index d5420f2..6e6875b 100644
--- a/dev/core/src/com/google/gwt/dev/javac/StandardGeneratorContext.java
+++ b/dev/core/src/com/google/gwt/dev/javac/StandardGeneratorContext.java
@@ -28,6 +28,7 @@
 import com.google.gwt.core.ext.typeinfo.TypeOracle;
 import com.google.gwt.dev.cfg.ModuleDef;
 import com.google.gwt.dev.javac.impl.FileCompilationUnit;
+import com.google.gwt.dev.javac.impl.Shared;
 import com.google.gwt.dev.resource.ResourceOracle;
 import com.google.gwt.dev.util.DiskCache;
 import com.google.gwt.dev.util.Util;
@@ -105,14 +106,20 @@
      * Finalizes the source and adds this compilation unit to the host.
      */
     public void commit() {
-      cacheToken = diskCache.writeString(sw.toString());
+      String source = sw.toString();
+      strongHash = Util.computeStrongName(Util.getBytes(source));
+      cacheToken = diskCache.writeString(source);
       sw = null;
       creationTime = System.currentTimeMillis();
     }
 
     @Override
     public String getDisplayLocation() {
-      return "transient source for " + typeName;
+      if (strongHash != null) {
+        return "generated://" + strongHash + "/" + Shared.toPath(getTypeName());
+      } else {
+        return "generated://uncommitted/" + Shared.toPath(getTypeName());
+      }
     }
 
     @Override
@@ -129,9 +136,6 @@
     }
 
     public String getStrongHash() {
-      if (strongHash == null) {
-        strongHash = Util.computeStrongName(Util.getBytes(getSource()));
-      }
       return strongHash;
     }