java-decompiler: optimization (less string buffer allocations on generating text)

1 files changed, 7 insertions, 3 deletions

diff --git a/src/org/jetbrains/java/decompiler/util/InterpreterUtil.java b/src/org/jetbrains/java/decompiler/util/InterpreterUtil.java
index cc4e4bd..5f48e32 100644
--- a/src/org/jetbrains/java/decompiler/util/InterpreterUtil.java
+++ b/src/org/jetbrains/java/decompiler/util/InterpreterUtil.java
@@ -60,12 +60,16 @@ public class InterpreterUtil {
   }
 
   public static String getIndentString(int length) {
-    String indent = (String)DecompilerContext.getProperty(IFernflowerPreferences.INDENT_STRING);
     StringBuilder buf = new StringBuilder();
+    appendIndent(buf, length);
+    return buf.toString();
+  }
+
+  public static void appendIndent(StringBuilder buffer, int length) {
+    String indent = (String)DecompilerContext.getProperty(IFernflowerPreferences.INDENT_STRING);
     while (length-- > 0) {
-      buf.append(indent);
+      buffer.append(indent);
     }
-    return buf.toString();
   }
 
   public static boolean equalSets(Collection<?> c1, Collection<?> c2) {