1 files changed, 148 insertions, 0 deletions
diff --git a/src/main/java/net/sf/antcontrib/cpptasks/trolltech/MetaObjectParser.java b/src/main/java/net/sf/antcontrib/cpptasks/trolltech/MetaObjectParser.java
new file mode 100644
index 0000000..e75a116
--- /dev/null
+++ b/src/main/java/net/sf/antcontrib/cpptasks/trolltech/MetaObjectParser.java
@@ -0,0 +1,148 @@
+/*
+ *
+ * Copyright 2004 The Ant-Contrib project
+ *
+ *  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 net.sf.antcontrib.cpptasks.trolltech;
+
+import java.io.IOException;
+import java.io.Reader;
+
+import net.sf.antcontrib.cpptasks.parser.AbstractParser;
+import net.sf.antcontrib.cpptasks.parser.AbstractParserState;
+import net.sf.antcontrib.cpptasks.parser.LetterState;
+import net.sf.antcontrib.cpptasks.parser.WhitespaceOrLetterState;
+
+/**
+ * Scans a source file for Q_OBJECT.
+ *
+ * @author Curt Arnold
+ */
+public final class MetaObjectParser
+    extends AbstractParser {
+  /**
+   * Parser state that matches file T character.
+   */
+  private static final class FinalTState
+      extends AbstractParserState {
+    /**
+     * Parser.
+     */
+    private final MetaObjectParser mocParser;
+
+    /**
+     * Constructor.
+     * @param parser MetaObjectParser parser
+     */
+    public FinalTState(final MetaObjectParser parser) {
+      super(parser);
+      this.mocParser = parser;
+    }
+
+    /**
+     * Consumes a character and returns the next state for the parser.
+     *
+     * @param ch
+     *            next character
+     * @return the configured nextState if ch is the expected character or the
+     *         configure noMatchState otherwise.
+     */
+    public AbstractParserState consume(final char ch) {
+      if (ch == 'T') {
+        mocParser.setQObject(true);
+        return null;
+      }
+      if (ch == '\n') {
+        getParser().getNewLineState();
+      }
+      return null;
+    }
+  }
+
+  /**
+   * Determines if source file contains Q_OBJECT.
+   * @param reader Reader source reader
+   * @throws IOException if unable to read source file
+   * @return boolean true if source contains Q_OBJECT
+   */
+  public static boolean hasQObject(final Reader reader) throws IOException {
+    MetaObjectParser parser = new MetaObjectParser();
+    parser.parse(reader);
+    return parser.hasQObject;
+
+  }
+
+  /**
+   * Has Q_OBJECT been encountered.
+   */
+  private boolean hasQObject = false;
+
+  /**
+   * Parser state for start of new line.
+   */
+  private AbstractParserState newLineState;
+
+  /**
+   * Constructor.
+   *
+   */
+  private MetaObjectParser() {
+    //
+    //    search for Q_OBJECT
+    //
+    AbstractParserState t = new FinalTState(this);
+    AbstractParserState c = new LetterState(this, 'C', t, null);
+    AbstractParserState e = new LetterState(this, 'E', c, null);
+    AbstractParserState j = new LetterState(this, 'J', e, null);
+    AbstractParserState b = new LetterState(this, 'B', j, null);
+    AbstractParserState o = new LetterState(this, 'O', b, null);
+    AbstractParserState underline = new LetterState(this, '_', o, null);
+    newLineState = new WhitespaceOrLetterState(this, 'Q', underline);
+  }
+
+  /**
+   * Adds a filename to the list of included files.
+   *
+   * @param filename filename to be added
+   */
+  protected void addFilename(final String filename) {
+
+  }
+
+  /**
+   * Gets new line state.
+   * @return AbstractParserState new line state.
+   */
+  public AbstractParserState getNewLineState() {
+    return newLineState;
+  }
+
+  /**
+   * Parse input file.
+   * @param reader Reader source file
+   * @throws IOException if error reading source file
+   */
+  public void parse(final Reader reader) throws IOException {
+    hasQObject = false;
+    super.parse(reader);
+  }
+
+  /**
+   * Called FinalTState to set that Q_OBJECT was found.
+   * @param value boolean new value for hasQObject
+   */
+  public void setQObject(final boolean value) {
+    this.hasQObject = value;
+  }
+}