114 lines
2.4 KiB
Go
114 lines
2.4 KiB
Go
/*
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Serene --- Yet an other Lisp
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Copyright (c) 2020 Sameer Rahmani <lxsameer@gnu.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package core
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import (
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"fmt"
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"serene-lang.org/bootstrap/pkg/ast"
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)
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type INamespace interface {
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DefineGlobal()
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LookupGlobal()
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GetRootScope() IScope
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// return the fully qualified name of the namespace
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GetName() string
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getForms() *Block
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setForms(forms *Block)
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}
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type Namespace struct {
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name string
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rootScope Scope
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source string
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externals map[string]*Namespace
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forms Block
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}
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func (n *Namespace) GetType() ast.NodeType {
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return ast.Namespace
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}
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func (n *Namespace) GetLocation() ast.Location {
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return ast.MakeUnknownLocation()
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}
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func (n *Namespace) String() string {
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return fmt.Sprintf("<ns: %s at %s>", n.name, n.source)
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}
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func (n *Namespace) ToDebugStr() string {
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return fmt.Sprintf("<ns: %s at %s>", n.name, n.source)
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}
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func (n *Namespace) DefineGlobal(k string, v IExpr, public bool) {
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n.rootScope.Insert(k, v, public)
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}
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func (n *Namespace) LookupGlobal(sym *Symbol) *Binding {
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if !sym.IsNSQualified() {
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return nil
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}
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externalNS, ok := n.externals[sym.GetNSPart()]
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if !ok {
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return nil
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}
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externalScope := externalNS.GetRootScope()
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return externalScope.Lookup(sym.GetName())
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}
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func (n *Namespace) GetRootScope() IScope {
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return &n.rootScope
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}
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func (n *Namespace) GetName() string {
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return n.name
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}
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func (n *Namespace) hasExternal(nsName string) bool {
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_, ok := n.externals[nsName]
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return ok
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}
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func (n *Namespace) setExternal(name string, ns *Namespace) {
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n.externals[name] = ns
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}
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func (n *Namespace) setForms(block *Block) {
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n.forms = *block
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}
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func (n *Namespace) getForms() *Block {
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return &n.forms
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}
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func MakeNS(name string, source string) Namespace {
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s := MakeScope(nil)
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return Namespace{
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name: name,
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rootScope: *s,
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source: source,
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externals: map[string]*Namespace{},
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}
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}
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