- more frontend pieces in Go

SVN=126744

usr/gri/src/globals.go

@@ -0,0 +1,66 @@
+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package Globals;
+
+
+// The following types should really be in their respective files
+// object.go, type.go, and scope.go but they refer to each other
+// and we don't know how to handle forward-declared pointers across
+// packages yet.
+
+
+// ----------------------------------------------------------------------------
+
+export Object
+type Object struct {
+	mark bool;  // mark => object marked for export
+	kind int;
+	name string;
+	type_ *Type;
+	pnolev int;  // >= 0: package no., <= 0: level, 0: global level of compilation
+}
+
+
+// ----------------------------------------------------------------------------
+
+export Type
+type Type struct {
+	ref int;  // for exporting only: >= 0 means already exported
+	form int;
+	flags int;  // channels, functions
+	size int;  // in bytes
+	len_ int;  // array length, no. of parameters (w/o recv)
+	obj *Object;  // primary type object or NULL
+	key *Object;  // maps
+	elt *Object;  // arrays, maps, channels, pointers, references
+	scope *Scope;  // incomplete types, structs, interfaces, functions, packages
+}
+
+
+// ----------------------------------------------------------------------------
+
+export Scope
+type Scope struct {
+	parent *Scope;
+	// list ObjList
+	
+}
+
+
+func (scope *Scope) Lookup(ident string) *Object {
+	panic "UNIMPLEMENTED";
+	return nil;
+}
+
+
+func (scope *Scope) Insert(obj *Object) {
+	panic "UNIMPLEMENTED";
+}
+
+
+func (scope *Scope) InsertImport(obj *Object) *Object {
+	panic "UNIMPLEMENTED";
+	return nil;
+}

usr/gri/src/object.go

@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package Object
+
+import Globals "globals"
+
+
+export BAD, CONST, TYPE, VAR, FUNC, PACKAGE
+const /* kind */ (
+	BAD = iota;  // error handling
+	CONST; TYPE; VAR; FUNC; PACKAGE;
+	PTYPE;  // primary type (import/export only)
+)
+
+
+type Object Globals.Object
+
+
+func NewObject(kind int, name string) *Object {
+	obj := new(Object);
+	obj.mark = false;
+	obj.kind = kind;
+	obj.name = name;
+	obj.type_ = nil;  // Universe::undef_t;
+	obj.pnolev = 0;
+	return obj;
+}

usr/gri/src/scope.go

@@ -0,0 +1,14 @@
+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package Scope
+
+import Globals "Globals"
+
+type Scope Globals.Scope
+
+func New(parent *Scope) *Scope {
+	panic "UNIMPLEMENTED";
+	return nil;
+}

usr/gri/src/type.go

@@ -0,0 +1,33 @@
+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package Type
+
+import Globals "globals"
+
+const /* form */ (
+	// internal types
+	UNDEF = iota; BAD; NIL;
+	// basic types
+	BOOL; UINT; INT; FLOAT; STRING;
+	// 'any' type
+	ANY;
+	// composite types
+	ARRAY; STRUCT; INTERFACE; MAP; CHANNEL; FUNCTION; POINTER; REFERENCE;
+)
+
+
+const /* flag */ (
+	SEND = 1 << iota;  // chan>
+	RECV;  // chan< or method
+)
+
+
+type Type Globals.Type
+
+
+func NewType(form int) *Type {
+	panic "UNIMPLEMENTED";
+	return nil;
+}