1 files changed, 64 insertions, 0 deletions
diff --git a/sources/scalac/typechecker/ImportList.java b/sources/scalac/typechecker/ImportList.java
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+++ b/sources/scalac/typechecker/ImportList.java
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+/*     ____ ____  ____ ____  ______                                     *\
+**    / __// __ \/ __// __ \/ ____/    SOcos COmpiles Scala             **
+**  __\_ \/ /_/ / /__/ /_/ /\_ \       (c) 2002, LAMP/EPFL              **
+** /_____/\____/\___/\____/____/                                        **
+**
+** $Id$
+\*                                                                      */
+
+package scalac.typechecker;
+
+import scalac.*;
+import scalac.util.*;
+import scalac.symtab.*;
+import scalac.ast.*;
+
+/////////////////////////////////////////////////////////////////////////////
+// Import Lists
+/////////////////////////////////////////////////////////////////////////////
+
+class ImportList {
+    Tree tree;           // The import definition
+    Scope enclscope;         // The scope in which the import occurs.
+    ImportList prev;     // The previous active import list.
+
+    ImportList(Tree tree, Scope enclscope, ImportList prev) {
+	this.tree = tree;
+	this.enclscope = enclscope;
+	this.prev = prev;
+    }
+
+    Tree importPrefix() {
+	switch (tree) {
+	case Import(Tree expr, _): return expr;
+	default: throw new ApplicationError();
+	}
+    }
+
+    Type importType() {
+	return tree.symbol().type();
+    }
+
+    boolean sameImport(ImportList that) {
+	return this.importType().isSameAs(that.importType());
+    }
+
+    Symbol importedSymbol(Name name) {
+	Type t = this.importType();
+	boolean renamed = false;
+	switch (tree) {
+	case Import(Tree expr, Name[] selectors):
+	    for (int i = 0; i < selectors.length; i = i + 2) {
+		if (i + 1 < selectors.length && name == selectors[i + 1])
+		    return t.lookupNonPrivate(selectors[i]);
+		else if (name == selectors[i])
+		    renamed = true;
+		else if (selectors[i] == Names.WILDCARD && !renamed)
+		    return t.lookupNonPrivate(name);
+	    }
+	    return Symbol.NONE;
+	default:
+	    throw new ApplicationError();
+	}
+    }
+}