[09 - LL(I) AST] Re-init project as project with modules

ÜB-Praxis-LL1-Parser für X-Leer/src/de/dhbw/compiler/xparser/TokenBuffer.java

@@ -0,0 +1,45 @@
+/* **********************************************
+ * Duale Hochschule Baden-Württemberg Karlsruhe
+ * Prof. Dr. Jörn Eisenbiegler
+ * 
+ * Vorlesung Übersetzerbau
+ * Praxis LL(1)-Parser für X
+ * - Token-Puffer
+ * 
+ * **********************************************
+ */
+
+package de.dhbw.compiler.xparser;
+
+import java.io.IOException;
+
+public class TokenBuffer {
+	
+	private JFlexXScanner scanner;
+	private int count = 0;
+	private Token token = null;
+	
+	public TokenBuffer(JFlexXScanner scanner) throws IOException {
+		this.scanner = scanner;
+		token = scanner.nextToken();
+		count++;
+	}
+	
+	public Token nextToken() throws IOException {
+		Token help = token;
+		if (help.getType()!=Token.EOF) {
+			token = scanner.nextToken();
+			count++;
+		}
+		return help;
+	}
+	
+	public Token lookaheadToken()  {
+		return token;
+	}
+	
+	public int getTokenCount() {
+		return count;
+	}
+
+}