95 lines
2.1 KiB
Go
95 lines
2.1 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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"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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// Block struct represents a group of forms. Don't confuse it with
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// code blocks from other languages that specify a block using curly
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// brackets and indentation.
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// Blocks in serene are just a group of forms and nothing more.
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type Block struct {
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ExecutionScope
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body []IExpr
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}
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func (b *Block) GetType() ast.NodeType {
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return ast.Block
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}
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func (b *Block) String() string {
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var strs []string
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for _, e := range b.body {
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strs = append(strs, e.String())
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}
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return strings.Join(strs, " ")
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}
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func (b *Block) ToDebugStr() string {
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return fmt.Sprintf("%#v", b)
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}
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func (b *Block) GetLocation() *ast.Location {
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if len(b.body) > 0 {
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return b.body[0].GetLocation()
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}
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return ast.MakeUnknownLocation()
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}
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func (l *Block) Hash() uint32 {
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bytes := []byte("TODO")
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return hash.Of(append([]byte{byte(ast.Block)}, bytes...))
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}
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func (b *Block) ToSlice() []IExpr {
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return b.body
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}
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func (b *Block) SetContent(body []IExpr) {
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b.body = body
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}
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// Append the given expr `form` to the block
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func (b *Block) Append(form IExpr) {
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b.body = append(b.body, form)
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}
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func (b *Block) Count() int {
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return len(b.body)
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}
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// MakeEmptyBlock creates an empty block
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func MakeEmptyBlock() *Block {
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return &Block{}
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}
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// MakeBlock creates a block that holds the given array of
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// forms `body`.
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func MakeBlock(body []IExpr) *Block {
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return &Block{
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body: body,
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}
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}
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