From 3ead6094d60e86cfba653227419a5cd50df1a189 Mon Sep 17 00:00:00 2001
From: bdemsky <bdemsky>
Date: Tue, 14 Nov 2006 22:01:40 +0000
Subject: [PATCH] starting to work on supporting packages and import
 statements.

---
 Robust/src/IR/ClassDescriptor.java | 23 ++++++---
 Robust/src/IR/Tree/BuildIR.java    | 20 ++++++++
 Robust/src/Main/Main.java          |  2 +-
 Robust/src/Parse/java14.cup        | 82 ++++++++++++++++++++----------
 4 files changed, 92 insertions(+), 35 deletions(-)

diff --git a/Robust/src/IR/ClassDescriptor.java b/Robust/src/IR/ClassDescriptor.java
index 3b51b536..b1e05b13 100644
--- a/Robust/src/IR/ClassDescriptor.java
+++ b/Robust/src/IR/ClassDescriptor.java
@@ -3,19 +3,12 @@ import java.util.*;
 import IR.Tree.*;
 
 public class ClassDescriptor extends Descriptor {
-    public ClassDescriptor(String classname) {
-	super(classname);
-	superclass=null;
-	flags=new SymbolTable();
-	fields=new SymbolTable();
-	methods=new SymbolTable();
-	classid=UIDCount++;
-    }
     private static int UIDCount=0; 
     private final int classid;
     String superclass;
     ClassDescriptor superdesc;
     boolean hasFlags=false;
+    String packagename;
 
     Modifiers modifiers;
 
@@ -23,6 +16,20 @@ public class ClassDescriptor extends Descriptor {
     SymbolTable flags;
     SymbolTable methods;
 
+    public ClassDescriptor(String classname) {
+	this("", classname);
+    }
+
+    public ClassDescriptor(String packagename, String classname) {
+	super(classname);
+	superclass=null;
+	flags=new SymbolTable();
+	fields=new SymbolTable();
+	methods=new SymbolTable();
+	classid=UIDCount++;
+	this.packagename=packagename;
+    }
+
     public int getId() {
 	return classid;
     }
diff --git a/Robust/src/IR/Tree/BuildIR.java b/Robust/src/IR/Tree/BuildIR.java
index 636821f7..17eceb26 100644
--- a/Robust/src/IR/Tree/BuildIR.java
+++ b/Robust/src/IR/Tree/BuildIR.java
@@ -17,6 +17,26 @@ public class BuildIR {
 
     /** Parse the classes in this file */
     public void parseFile(ParseNode pn) {
+	NameDescriptor packages;
+	Vector singleimports=new Vector();
+	Vector multiimports=new Vector();
+
+	ParseNode ipn=pn.getChild("imports").getChild("import_decls_list");
+	if (ipn!=null) {
+	    ParseNodeVector pnv=ipn.getChildren();
+	    for(int i=0;i<pnv.size();i++) {
+		ParseNode pnimport=pnv.elementAt(i);
+		NameDescriptor nd=parseName(pnimport.getChild("name"));
+		if (isNode(pnimport,"import_single"))
+		    singleimports.add(nd);
+		else
+		    multiimports.add(nd);
+	    }
+	}
+	ParseNode ppn=pn.getChild("packages").getChild("package");
+	if (ppn!=null) {
+	    packages=parseName(pn.getChild("name"));
+	}
 	ParseNode tpn=pn.getChild("type_declaration_list");
 	if (tpn!=null) {
 	    ParseNodeVector pnv=tpn.getChildren();
diff --git a/Robust/src/Main/Main.java b/Robust/src/Main/Main.java
index 94782374..af5c038c 100644
--- a/Robust/src/Main/Main.java
+++ b/Robust/src/Main/Main.java
@@ -95,7 +95,7 @@ public class Main {
 	ParseNode p=(ParseNode) g./*debug_*/parse().value;
 	state.addParseNode(p);
 	if (l.numErrors()!=0) {
-	    System.out.println("Error parsing Object.java");
+	    System.out.println("Error parsing "+sourcefile);
 	    System.exit(l.numErrors());
 	}
     }
diff --git a/Robust/src/Parse/java14.cup b/Robust/src/Parse/java14.cup
index ae8058e5..d964ee8b 100644
--- a/Robust/src/Parse/java14.cup
+++ b/Robust/src/Parse/java14.cup
@@ -120,12 +120,12 @@ non terminal ParseNode array_type;
 non terminal ParseNode name, simple_name, qualified_name;
 // 19.6) Packages
 non terminal ParseNode compilation_unit;
-//non terminal ParseNode package_declaration_opt, package_declaration;
-//non terminal ParseNode import_declarations_opt, import_declarations;
+non terminal ParseNode package_declaration_opt, package_declaration;
+non terminal ParseNode import_declarations_opt, import_declarations;
 non terminal ParseNode type_declarations_opt, type_declarations;
-//non terminal ParseNode import_declaration;
-//non terminal ParseNode single_type_import_declaration;
-//non terminal ParseNode type_import_on_demand_declaration;
+non terminal ParseNode import_declaration;
+non terminal ParseNode single_type_import_declaration;
+non terminal ParseNode type_import_on_demand_declaration;
 non terminal ParseNode type_declaration;
 // 19.7) Productions used only in the LALR(1) grammar
 non terminal ParseNode modifiers_opt, modifiers, modifier;
@@ -501,26 +501,44 @@ qualified_name ::= name:name DOT IDENTIFIER:id {:
 
 // 19.6) Packages
 compilation_unit ::=
-//              package_declaration_opt
-//              import_declarations_opt
+                package_declaration_opt:pdo
+                import_declarations_opt:ido
 		type_declarations_opt:tdo {: 
 		ParseNode pn=new ParseNode("compilation_unit");
 		pn.addChild(tdo);
+		pn.addChild("packages").addChild(pdo);
+		pn.addChild("imports").addChild(ido);
 		RESULT=pn;
 		:}
 		;
-//package_declaration_opt ::= package_declaration | ;
-//import_declarations_opt ::= import_declarations | ;
+package_declaration_opt ::= package_declaration:pdo {:
+		RESULT=pdo;
+	:} |
+	{: RESULT=new ParseNode("empty"); :}
+;
+
+import_declarations_opt ::= import_declarations:ido {: 
+		RESULT=ido;
+	:} | 
+	{: RESULT=new ParseNode("empty"); :}
+;
 type_declarations_opt   ::= type_declarations:tds {:
 		RESULT=tds;
 		:}   | 
 	{: RESULT=new ParseNode("empty"); :}
 	;
 
-//import_declarations ::=
-//               import_declaration
-//       |       import_declarations import_declaration
-//       ;
+import_declarations ::=
+               import_declaration:id {: 
+		ParseNode pn=new ParseNode("import_decls_list");
+		pn.addChild(id);
+		RESULT=pn;
+	:}
+       |       import_declarations:ids import_declaration:id {: 
+		ids.addChild(id);
+		RESULT=ids;
+	:}
+       ;
 
 type_declarations ::= 
 		type_declaration:td {:
@@ -534,19 +552,31 @@ type_declarations ::=
 		:}
 	;
 
-//package_declaration ::=
-//               PACKAGE name SEMICOLON
-//       ;
-//import_declaration ::=
-//               single_type_import_declaration
-//       |       type_import_on_demand_declaration
-//       ;
-//single_type_import_declaration ::=
-//               IMPORT name SEMICOLON
-//       ;
-//type_import_on_demand_declaration ::=
-//               IMPORT name DOT MULT SEMICOLON
-//       ;
+package_declaration ::=
+               PACKAGE name:name SEMICOLON {: 
+	ParseNode pn=new ParseNode("package");
+	pn.addChild(name);
+	RESULT=pn;
+	:}
+       ;
+import_declaration ::=
+               single_type_import_declaration:sid {: RESULT=sid; :}
+       |       type_import_on_demand_declaration:iod {: RESULT=iod; :}
+       ;
+single_type_import_declaration ::=
+               IMPORT name:name SEMICOLON {: 
+	ParseNode pn=new ParseNode("import_single");
+	pn.addChild(name);
+	RESULT=pn;
+:}
+       ;
+type_import_on_demand_declaration ::=
+               IMPORT name:name DOT MULT SEMICOLON {:
+	ParseNode pn=new ParseNode("import_ondemand");
+	pn.addChild(name);
+	RESULT=pn;
+	:}       
+	;
 
 type_declaration ::=
 		class_declaration:cd 
-- 
2.34.1