cache URLs of sourceClasspath to avoid failing of tests

src/main/java/spoon/support/StandardEnvironment.java

@@ -70,6 +70,7 @@ public class StandardEnvironment implements Serializable, Environment {
  private int warningCount = 0;
 
  private String[] sourceClasspath = null;
+ private URL[] urlSourceClasspath = null;
 
  private boolean preserveLineNumbers = false;
 
@@ -367,17 +368,20 @@ public ClassLoader getClassLoader() {
  * Creates a URL class path from {@link Environment#getSourceClasspath()}
  */
  public URL[] urlClasspath() {
- String[] classpath = getSourceClasspath();
- int length = (classpath == null) ? 0 : classpath.length;
- URL[] urls = new URL[length];
- for (int i = 0; i < length; i += 1) {
- try {
- urls[i] = new File(classpath[i]).toURI().toURL();
- } catch (MalformedURLException e) {
- throw new IllegalStateException("Invalid classpath: " + classpath, e);
+ if (urlSourceClasspath == null) {
+ String[] classpath = getSourceClasspath();
+ int length = (classpath == null) ? 0 : classpath.length;
+ URL[] urls = new URL[length];
+ for (int i = 0; i < length; i += 1) {
+ try {
+ urls[i] = new File(classpath[i]).toURI().toURL();
+ } catch (MalformedURLException e) {
+ throw new IllegalStateException("Invalid classpath: " + classpath, e);
+ }
  }
+ urlSourceClasspath = urls;
  }
- return urls;
+ return urlSourceClasspath;
  }
 
  @Override
@@ -389,6 +393,7 @@ public String[] getSourceClasspath() {
  public void setSourceClasspath(String[] sourceClasspath) {
  verifySourceClasspath(sourceClasspath);
  this.sourceClasspath = sourceClasspath;
+ urlSourceClasspath = null;
  }
 
  private void verifySourceClasspath(String[] sourceClasspath) throws InvalidClassPathException {