chore: migrate to gitea

vendor/github.com/goccy/go-yaml/parser/context.go

@@ -0,0 +1,187 @@
+package parser
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/goccy/go-yaml/token"
+)
+
+// context context at parsing
+type context struct {
+	tokenRef *tokenRef
+	path     string
+	isFlow   bool
+}
+
+type tokenRef struct {
+	tokens []*Token
+	size   int
+	idx    int
+}
+
+var pathSpecialChars = []string{
+	"$", "*", ".", "[", "]",
+}
+
+func containsPathSpecialChar(path string) bool {
+	for _, char := range pathSpecialChars {
+		if strings.Contains(path, char) {
+			return true
+		}
+	}
+	return false
+}
+
+func normalizePath(path string) string {
+	if containsPathSpecialChar(path) {
+		return fmt.Sprintf("'%s'", path)
+	}
+	return path
+}
+
+func (c *context) currentToken() *Token {
+	if c.tokenRef.idx >= c.tokenRef.size {
+		return nil
+	}
+	return c.tokenRef.tokens[c.tokenRef.idx]
+}
+
+func (c *context) isComment() bool {
+	return c.currentToken().Type() == token.CommentType
+}
+
+func (c *context) nextToken() *Token {
+	if c.tokenRef.idx+1 >= c.tokenRef.size {
+		return nil
+	}
+	return c.tokenRef.tokens[c.tokenRef.idx+1]
+}
+
+func (c *context) nextNotCommentToken() *Token {
+	for i := c.tokenRef.idx + 1; i < c.tokenRef.size; i++ {
+		tk := c.tokenRef.tokens[i]
+		if tk.Type() == token.CommentType {
+			continue
+		}
+		return tk
+	}
+	return nil
+}
+
+func (c *context) isTokenNotFound() bool {
+	return c.currentToken() == nil
+}
+
+func (c *context) withGroup(g *TokenGroup) *context {
+	ctx := *c
+	ctx.tokenRef = &tokenRef{
+		tokens: g.Tokens,
+		size:   len(g.Tokens),
+	}
+	return &ctx
+}
+
+func (c *context) withChild(path string) *context {
+	ctx := *c
+	ctx.path = c.path + "." + normalizePath(path)
+	return &ctx
+}
+
+func (c *context) withIndex(idx uint) *context {
+	ctx := *c
+	ctx.path = c.path + "[" + fmt.Sprint(idx) + "]"
+	return &ctx
+}
+
+func (c *context) withFlow(isFlow bool) *context {
+	ctx := *c
+	ctx.isFlow = isFlow
+	return &ctx
+}
+
+func newContext() *context {
+	return &context{
+		path: "$",
+	}
+}
+
+func (c *context) goNext() {
+	ref := c.tokenRef
+	if ref.size <= ref.idx+1 {
+		ref.idx = ref.size
+	} else {
+		ref.idx++
+	}
+}
+
+func (c *context) next() bool {
+	return c.tokenRef.idx < c.tokenRef.size
+}
+
+func (c *context) insertNullToken(tk *Token) *Token {
+	nullToken := c.createImplicitNullToken(tk)
+	c.insertToken(nullToken)
+	c.goNext()
+
+	return nullToken
+}
+
+func (c *context) addNullValueToken(tk *Token) *Token {
+	nullToken := c.createImplicitNullToken(tk)
+	rawTk := nullToken.RawToken()
+
+	// add space for map or sequence value.
+	rawTk.Position.Column++
+
+	c.addToken(nullToken)
+	c.goNext()
+
+	return nullToken
+}
+
+func (c *context) createImplicitNullToken(base *Token) *Token {
+	pos := *(base.RawToken().Position)
+	pos.Column++
+	tk := token.New("null", " null", &pos)
+	tk.Type = token.ImplicitNullType
+	return &Token{Token: tk}
+}
+
+func (c *context) insertToken(tk *Token) {
+	ref := c.tokenRef
+	idx := ref.idx
+	if ref.size < idx {
+		return
+	}
+	if ref.size == idx {
+		curToken := ref.tokens[ref.size-1]
+		tk.RawToken().Next = curToken.RawToken()
+		curToken.RawToken().Prev = tk.RawToken()
+
+		ref.tokens = append(ref.tokens, tk)
+		ref.size = len(ref.tokens)
+		return
+	}
+
+	curToken := ref.tokens[idx]
+	tk.RawToken().Next = curToken.RawToken()
+	curToken.RawToken().Prev = tk.RawToken()
+
+	ref.tokens = append(ref.tokens[:idx+1], ref.tokens[idx:]...)
+	ref.tokens[idx] = tk
+	ref.size = len(ref.tokens)
+}
+
+func (c *context) addToken(tk *Token) {
+	ref := c.tokenRef
+	lastTk := ref.tokens[ref.size-1]
+	if lastTk.Group != nil {
+		lastTk = lastTk.Group.Last()
+	}
+	lastTk.RawToken().Next = tk.RawToken()
+	tk.RawToken().Prev = lastTk.RawToken()
+
+	ref.tokens = append(ref.tokens, tk)
+	ref.size = len(ref.tokens)
+}