1 files changed, 153 insertions, 0 deletions
diff --git a/src/main/java/io/devnulllabs/openjava/mop/Environment.java b/src/main/java/io/devnulllabs/openjava/mop/Environment.java
new file mode 100644
index 0000000..635b22c
--- /dev/null
+++ b/src/main/java/io/devnulllabs/openjava/mop/Environment.java
@@ -0,0 +1,153 @@
+/*
+ * Environment.java
+ *
+ *
+ * Jul 28, 1998 by mich
+ */
+package io.devnulllabs.openjava.mop;
+
+
+
+
+public abstract class Environment
+{
+
+    protected Environment parent;
+
+    public Environment() {
+        parent = null;
+    }
+
+    public Environment( Environment e ) {
+        parent = e;
+    }
+
+    public abstract String toString();
+
+    /**
+     * Gets the package name.
+     * @return Package name or null
+     */
+    public String getPackage()
+    {
+        if (parent == null) {
+        System.err.println( "Environment.getPackage() : not specified." );
+        return null;
+    }
+        return parent.getPackage();
+    }
+
+    /**
+     * Looks a class object up.
+     *
+     * @param name the name of the fully-qualified name of the class
+     *             looked for
+     * @return Null or class found in lookup
+     */
+    public OJClass lookupClass( String name ) {
+        if (parent == null) {
+        System.err.println( "Environment.lookupClass() : not specified." );
+        return null;
+    }
+        return parent.lookupClass( name );
+    }
+
+    /**
+     * Records a class object.
+     *
+     * @param    name        the fully-qualified name of the class
+     * @param    clazz        the class object associated with that name
+     */
+    public abstract void record( String name, OJClass clazz );
+
+    /**
+     * Looks up a binded type of the given variable or field name.
+     *
+     * @param name the fully-qualified name of the class
+     * @param clazz the class object associated with that name
+     * @return Class bind lookup or null
+     */
+    public OJClass lookupBind( String name ) {
+        if (parent == null)  return null;
+        return parent.lookupBind( name );
+    }
+
+    /**
+     * binds a name to the class type.
+     *
+     * @param name the fully-qualified name of the class
+     * @param clazz the class object associated with that name
+     */
+    public abstract void bindVariable( String name, OJClass clazz );
+
+    /**
+     * Obtains the fully-qualified name of the given class name.
+     *
+     * @param name a simple class name or a fully-qualified class name
+     * @return the fully-qualified name of the class
+     */
+    public String toQualifiedName( String name ) {
+    if (parent == null)  return name;
+    return parent.toQualifiedName( name );
+    }
+
+    /**
+     * Tests if the given name is a qualified name or not.
+     * @param name String to test if qualified or not
+     * @return result
+     */
+    public static boolean isQualifiedName( String name ) {
+        return name.indexOf( '.' ) >= 0;
+    }
+
+    /**
+     * Converts a fully-qualified name to the corresponding simple-name.
+     *
+     * <pre>
+     * For example :
+     *   toSimpleName( "java.lang.Class" ) returns  "Class".
+     * </pre>
+     *
+     * @param qualified_name Name to convert
+     * @return the given name <I>as is</I> if it is not a qualified
+     * name
+     */
+    public static String toSimpleName( String qualified_name ) {
+        int index = qualified_name.lastIndexOf( '.' );
+        if (index < 0) {
+        return qualified_name;
+        } else {
+        return qualified_name.substring( index + 1 );
+        }
+    }
+
+    /**
+     * Converts a fully-qualified name to the corresponding package name.
+     *
+     * <pre>
+     * For example :
+     *   toPackageName( "java.lang.Class" ) returns  "java.lang".
+     *   toPackageName( "MyClass" ) returns  "".
+     * </pre>
+     *
+     * @param qualified_name Name to convert to package name
+     * @return the given name <I>as is</I> if it is not a qualified
+     * name
+     */
+    public static String toPackageName( String qualified_name ) {
+        int index = qualified_name.lastIndexOf( '.' );
+        return (index < 0) ? "" : qualified_name.substring( 0, index );
+    }
+
+    public String currentClassName() {
+        if (parent == null)  return null;
+        return parent.currentClassName();
+    }
+
+    /******************************/
+    public boolean isRegisteredModifier( String str ) {
+        if (parent == null)  return false;
+        return parent.isRegisteredModifier( str );
+    }
+
+}