added DbmlParser as single point of entry

README.md

@@ -7,8 +7,7 @@ Using Java 17.
 
 Example usage:
 ```java
-import com.wn.dbml.compiler.lexer.LexerImpl;
-import com.wn.dbml.compiler.parser.ParserImpl;
+import com.wn.dbml.compiler.DbmlParser;
 import com.wn.dbml.model.Database;
 
 class Example {
@@ -18,7 +17,7 @@ class Example {
           id integer
         }""";
     // parse the dbml
-    Database database = new ParserImpl().parse(new LexerImpl(dbml));
+    Database database = DbmlParser.parse(dbml);
     // process the database structure
     database.getSchemas().stream()
         .flatMap(schema -> schema.getTables().stream())

src/main/java/com/wn/dbml/compiler/DbmlParser.java

@@ -0,0 +1,30 @@
+package com.wn.dbml.compiler;
+
+import com.wn.dbml.compiler.lexer.LexerImpl;
+import com.wn.dbml.compiler.parser.ParserImpl;
+import com.wn.dbml.model.Database;
+
+import java.io.Reader;
+
+/**
+ * Creates a database representation using DBML.
+ */
+public final class DbmlParser {
+    /**
+     * Creates a database representation using a DBML string.
+     *
+     * @param dbml a DBML string
+     */
+    public static Database parse(final String dbml) {
+        return new ParserImpl().parse(new LexerImpl(dbml));
+    }
+
+    /**
+     * Creates a database representation using a DBML reader.
+     *
+     * @param dbml a DBML reader
+     */
+    public static Database parse(final Reader dbml) {
+        return new ParserImpl().parse(new LexerImpl(dbml));
+    }
+}