mirror of
https://github.com/kubevela/kubevela.git
synced 2026-05-03 07:57:13 +00:00
135 lines
2.5 KiB
Go
135 lines
2.5 KiB
Go
/*
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Copyright 2021 The KubeVela Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package sets
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import (
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"strconv"
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"strings"
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"cuelang.org/go/cue/ast"
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)
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type nodewalker struct {
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pos []string
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tags map[string]string
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process walkProcess
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}
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type walkCtx interface {
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Pos() []string
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Tags() map[string]string
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}
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type walkProcess func(node ast.Node, ctx walkCtx)
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func newWalker(process walkProcess) *nodewalker {
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return &nodewalker{
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pos: []string{},
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process: process,
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tags: map[string]string{},
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}
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}
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func (nwk *nodewalker) walk(node ast.Node) {
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if nwk.process != nil {
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nwk.process(node, nwk)
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}
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switch n := node.(type) {
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case *ast.Field:
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label := labelStr(n.Label)
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if label == "" || strings.HasPrefix(label, "#") {
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return
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}
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if n.Value != nil {
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origin := nwk.pos
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oriTags := nwk.tags
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nwk.tags = map[string]string{}
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for k, v := range oriTags {
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nwk.tags[k] = v
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}
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nwk.pos = append(nwk.pos, labelStr(n.Label))
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tags := findCommentTag(n.Comments())
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for tk, tv := range tags {
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nwk.tags[tk] = tv
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}
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nwk.walk(n.Value)
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nwk.tags = oriTags
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nwk.pos = origin
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}
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case *ast.StructLit:
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nwk.walkDeclList(n.Elts)
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case *ast.ListLit:
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nwk.walkExprList(n.Elts)
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case *ast.BinaryExpr:
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nwk.walk(n.X)
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nwk.walk(n.Y)
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case *ast.EmbedDecl:
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nwk.walk(n.Expr)
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case *ast.Comprehension:
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nwk.walk(n.Value)
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// Files
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case *ast.File:
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nwk.walkDeclList(n.Decls)
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case *ast.ListComprehension:
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nwk.walk(n.Expr)
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case *ast.CallExpr:
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// close func need to be ignored
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if it, ok := n.Fun.(*ast.Ident); ok && it.Name == "close" && len(n.Args) == 1 {
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nwk.walk(n.Args[0])
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} else {
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nwk.walkExprList(n.Args)
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}
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default:
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}
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}
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func (nwk *nodewalker) walkExprList(list []ast.Expr) {
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for i, x := range list {
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origin := nwk.pos
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nwk.pos = append(nwk.pos, strconv.Itoa(i))
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nwk.walk(x)
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nwk.pos = origin
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}
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}
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func (nwk *nodewalker) walkDeclList(list []ast.Decl) {
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for _, x := range list {
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nwk.walk(x)
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}
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}
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func (nwk *nodewalker) Pos() []string {
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return nwk.pos
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}
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func (nwk *nodewalker) Tags() map[string]string {
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return nwk.tags
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}
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