Initial import.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524

Tools/Source/Cpptasks/net/sf/antcontrib/cpptasks/parser/AbstractParser.java

@@ -0,0 +1,67 @@
+/*
+ * 
+ * Copyright 2001-2004 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;
+import java.io.IOException;
+import java.io.Reader;
+/**
+ * An abstract base class for simple parsers
+ * 
+ * @author Curt Arnold
+ */
+public abstract class AbstractParser {
+    /**
+     * 
+     *  
+     */
+    protected AbstractParser() {
+    }
+    protected abstract void addFilename(String filename);
+    public abstract AbstractParserState getNewLineState();
+    protected void parse(Reader reader) throws IOException {
+        char[] buf = new char[4096];
+        AbstractParserState newLineState = getNewLineState();
+        AbstractParserState state = newLineState;
+        int charsRead = -1;
+        do {
+            charsRead = reader.read(buf, 0, buf.length);
+            if (state == null) {
+                for (int i = 0; i < charsRead; i++) {
+                    if (buf[i] == '\n') {
+                        state = newLineState;
+                        break;
+                    }
+                }
+            }
+            if (state != null) {
+                for (int i = 0; i < charsRead; i++) {
+                    state = state.consume(buf[i]);
+                    //
+                    //  didn't match a production, skip to a new line
+                    //
+                    if (state == null) {
+                        for (; i < charsRead; i++) {
+                            if (buf[i] == '\n') {
+                                state = newLineState;
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+        } while (charsRead >= 0);
+    }
+}