1 files changed, 88 insertions, 0 deletions
diff --git a/src/main/java/com/jogamp/gluegen/jcpp/SourceIterator.java b/src/main/java/com/jogamp/gluegen/jcpp/SourceIterator.java
new file mode 100644
index 0000000..4990512
--- /dev/null
+++ b/src/main/java/com/jogamp/gluegen/jcpp/SourceIterator.java
@@ -0,0 +1,88 @@
+/*
+ * Anarres C Preprocessor
+ * Copyright (c) 2007-2008, Shevek
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied.  See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+package com.jogamp.gluegen.jcpp;
+
+import java.io.IOException;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+import static com.jogamp.gluegen.jcpp.Token.EOF;
+
+/**
+ * An Iterator for {@link Source Sources},
+ * returning {@link Token Tokens}.
+ */
+public class SourceIterator implements Iterator<Token> {
+
+    private final Source source;
+    private Token tok;
+
+    public SourceIterator(Source s) {
+        this.source = s;
+        this.tok = null;
+    }
+
+    /**
+     * Rethrows IOException inside IllegalStateException.
+     */
+    private void advance() {
+        try {
+            if (tok == null)
+                tok = source.token();
+        } catch (LexerException e) {
+            throw new IllegalStateException(e);
+        } catch (IOException e) {
+            throw new IllegalStateException(e);
+        }
+    }
+
+    /**
+     * Returns true if the enclosed Source has more tokens.
+     *
+     * The EOF token is never returned by the iterator.
+     * @throws IllegalStateException if the Source
+     *		throws a LexerException or IOException
+     */
+    public boolean hasNext() {
+        advance();
+        return tok.getType() != EOF;
+    }
+
+    /**
+     * Returns the next token from the enclosed Source.
+     *
+     * The EOF token is never returned by the iterator.
+     * @throws IllegalStateException if the Source
+     *		throws a LexerException or IOException
+     */
+    public Token next() {
+        if (!hasNext())
+            throw new NoSuchElementException();
+        Token t = this.tok;
+        this.tok = null;
+        return t;
+    }
+
+    /**
+     * Not supported.
+     *
+     * @throws UnsupportedOperationException.
+     */
+    public void remove() {
+        throw new UnsupportedOperationException();
+    }
+}