serene-golang-implementation/bootstrap/pkg/core/string.go

73 lines
1.5 KiB
Go

/*
Serene --- Yet an other Lisp
Copyright (c) 2020 Sameer Rahmani <lxsameer@gnu.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package core
import (
"fmt"
"strings"
"serene-lang.org/bootstrap/pkg/ast"
"serene-lang.org/bootstrap/pkg/hash"
)
type String struct {
Node
ExecutionScope
content string
}
func (s *String) GetType() ast.NodeType {
return ast.String
}
func (s *String) String() string {
return "\"" + s.Escape() + "\""
}
func (s *String) PrintToString() string {
return s.content
}
func (s *String) ToDebugStr() string {
return fmt.Sprintf("<%s at %p>", s.content, s)
}
func (s *String) Hash() uint32 {
bytes := []byte(s.content)
return hash.Of(append([]byte{byte(ast.String)}, bytes...))
}
func (s *String) Escape() string {
replacer := strings.NewReplacer(
"\n", "\\n",
"\t", "\\t",
"\r", "\\r",
"\\", "\\\\",
"\"", "\\\"",
)
return replacer.Replace(s.content)
}
func MakeString(n Node, s string) *String {
return &String{
Node: n,
content: s,
}
}