Initial import of cpptasks code

git-svn-id: file:///home/sven/projects/JOGL/temp/ant-contrib/svn/ant-contrib-code/trunk/cpptasks@62 32d7a393-a5a9-423c-abd3-5d954feb1f2f

1 files changed, 80 insertions, 0 deletions

diff --git a/src/net/sf/antcontrib/cpptasks/parser/LetterState.java b/src/net/sf/antcontrib/cpptasks/parser/LetterState.java
new file mode 100644
index 0000000..fc62f9b
--- /dev/null
+++ b/src/net/sf/antcontrib/cpptasks/parser/LetterState.java
@@ -0,0 +1,80 @@
+/*
+ *
+ * Copyright 2002-2004 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.parser;
+
+/**
+ * This parser state checks consumed characters against a specific character.
+ *
+ * @author Curt Arnold
+ */
+public final class LetterState
+    extends AbstractParserState {
+  /**
+   * Next state if a match is found.
+   */
+  private final AbstractParserState nextState;
+
+  /**
+   * Next state if not match is found.
+   */
+  private final AbstractParserState noMatchState;
+
+  /**
+   * Character to match.
+   */
+  private final char thisLetter;
+
+  /**
+   * Constructor.
+   *
+   * @param parser
+   *            parser
+   * @param matchLetter
+   *            letter to match
+   * @param nextStateArg
+   *            next state if a match on the letter
+   * @param noMatchStateArg
+   *            state if no match on letter
+   */
+  public LetterState(final AbstractParser parser,
+                     final char matchLetter,
+                     final AbstractParserState nextStateArg,
+                     final AbstractParserState noMatchStateArg) {
+    super(parser);
+    this.thisLetter = matchLetter;
+    this.nextState = nextStateArg;
+    this.noMatchState = noMatchStateArg;
+  }
+
+  /**
+   * 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 == thisLetter) {
+      return nextState;
+    }
+    if (ch == '\n') {
+      getParser().getNewLineState();
+    }
+    return noMatchState;
+  }
+}