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package script
import (
"bytes"
"fmt"
"go/ast"
"go/format"
"go/token"
"reflect"
"strings"
)
// block statement is a list of statements.
type BlockStmt struct {
Children []Expr
Node []ast.Node
}
// does not enter scope because it does not necessarily needs to (e.g. for, if).
func (w *World) compileBlockStmt_noScope(n *ast.BlockStmt) *BlockStmt {
b := &BlockStmt{}
for _, s := range n.List {
b.append(w.compileStmt(s), s)
}
return b
}
func (b *BlockStmt) append(s Expr, n ast.Node) {
b.Children = append(b.Children, s)
b.Node = append(b.Node, n)
}
func (b *BlockStmt) Eval() interface{} {
for _, s := range b.Children {
s.Eval()
}
return nil
}
func (b *BlockStmt) Type() reflect.Type {
return nil
}
func (b *BlockStmt) Child() []Expr {
return b.Children
}
func Format(n ast.Node) string {
var buf bytes.Buffer
fset := token.NewFileSet()
format.Node(&buf, fset, n)
str := buf.String()
if strings.HasSuffix(str, "\n") {
str = str[:len(str)-1]
}
return str
}
func (b *BlockStmt) Format() string {
var buf bytes.Buffer
fset := token.NewFileSet()
for i := range b.Children {
format.Node(&buf, fset, b.Node[i])
fmt.Fprintln(&buf)
}
return buf.String()
}
func (b *BlockStmt) Fix() Expr {
return &BlockStmt{Children: fixExprs(b.Children), Node: b.Node}
}
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