97 lines
1.9 KiB
Go
97 lines
1.9 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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"strings"
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"serene-lang.org/bootstrap/pkg/ast"
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"serene-lang.org/bootstrap/pkg/hash"
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)
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type Symbol struct {
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Node
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ExecutionScope
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name string
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nsPart string
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}
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func (s *Symbol) GetType() ast.NodeType {
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return ast.Symbol
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}
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func (s *Symbol) String() string {
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if s.IsNSQualified() {
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return s.nsPart + "/" + s.name
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}
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return s.name
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}
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func (s *Symbol) GetName() string {
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return s.name
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}
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func (s *Symbol) GetNSPart() string {
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return s.nsPart
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}
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func (s *Symbol) ToDebugStr() string {
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return s.String()
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}
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func (s *Symbol) Hash() uint32 {
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// TODO: Return a combined hash of nsPart and name
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return hash.Of([]byte(s.nsPart + "/" + s.name))
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}
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func (s *Symbol) IsRestable() bool {
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// Weird name ? I know :D
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return strings.HasPrefix(s.name, "&")
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}
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func (s *Symbol) IsNSQualified() bool {
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return s.nsPart != ""
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}
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func MakeSymbol(n Node, s string) (*Symbol, IError) {
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parts := strings.Split(s, "/")
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var (
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name string
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nsPart string
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)
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switch len(parts) {
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case 1:
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name = parts[0]
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nsPart = ""
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case 2:
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name = parts[1]
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nsPart = parts[0]
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default:
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return nil, MakeSyntaxErrorf(n, "can't create a symbol from '%s'. More that on '/' is illegal.", s)
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}
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return &Symbol{
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Node: n,
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name: name,
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nsPart: nsPart,
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}, nil
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}
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