Add Markdown render hooks for tables

Fixes #9316
Fixes #12811

markup/goldmark/blockquotes/blockquotes.go

@@ -16,10 +16,8 @@ package blockquotes
 import (
 	"regexp"
 	"strings"
-	"sync"
 
 	"github.com/gohugoio/hugo/common/herrors"
-	htext "github.com/gohugoio/hugo/common/text"
 	"github.com/gohugoio/hugo/common/types/hstring"
 	"github.com/gohugoio/hugo/markup/converter/hooks"
 	"github.com/gohugoio/hugo/markup/goldmark/internal/render"
@@ -71,70 +69,36 @@ func (r *htmlRenderer) renderBlockquote(w util.BufWriter, src []byte, node ast.N
 		return ast.WalkContinue, nil
 	}
 
-	pos := ctx.PopPos()
-	text := ctx.Buffer.Bytes()[pos:]
-	ctx.Buffer.Truncate(pos)
+	text := ctx.PopRenderedString()
 
 	ordinal := ctx.GetAndIncrementOrdinal(ast.KindBlockquote)
 
-	texts := string(text)
 	typ := typeRegular
-	alertType := resolveGitHubAlert(texts)
+	alertType := resolveGitHubAlert(string(text))
 	if alertType != "" {
 		typ = typeAlert
 	}
 
 	renderer := ctx.RenderContext().GetRenderer(hooks.BlockquoteRendererType, typ)
 	if renderer == nil {
-		return r.renderBlockquoteDefault(w, n, texts)
+		return r.renderBlockquoteDefault(w, n, text)
 	}
 
 	if typ == typeAlert {
 		// Trim preamble: <p>[!NOTE]<br>\n but preserve leading paragraph.
 		// We could possibly complicate this by moving this to the parser, but
 		// keep it simple for now.
-		texts = "<p>" + texts[strings.Index(texts, "\n")+1:]
-	}
-
-	var sourceRef []byte
-
-	// Extract a source sample to use for position information.
-	if nn := n.FirstChild(); nn != nil {
-		var start, stop int
-		for i := 0; i < nn.Lines().Len() && i < 2; i++ {
-			line := nn.Lines().At(i)
-			if i == 0 {
-				start = line.Start
-			}
-			stop = line.Stop
-		}
-		// We do not mutate the source, so this is safe.
-		sourceRef = src[start:stop]
+		text = "<p>" + text[strings.Index(text, "\n")+1:]
 	}
 
 	bqctx := &blockquoteContext{
-		page:             ctx.DocumentContext().Document,
-		pageInner:        r.getPageInner(ctx),
+		BaseContext:      render.NewBaseContext(ctx, renderer, n, src, nil, ordinal),
 		typ:              typ,
 		alertType:        alertType,
-		text:             hstring.RenderedString(texts),
-		sourceRef:        sourceRef,
-		ordinal:          ordinal,
+		text:             hstring.RenderedString(text),
 		AttributesHolder: attributes.New(n.Attributes(), attributes.AttributesOwnerGeneral),
 	}
 
-	bqctx.createPos = func() htext.Position {
-		if resolver, ok := renderer.(hooks.ElementPositionResolver); ok {
-			return resolver.ResolvePosition(bqctx)
-		}
-
-		return htext.Position{
-			Filename:     ctx.DocumentContext().Filename,
-			LineNumber:   1,
-			ColumnNumber: 1,
-		}
-	}
-
 	cr := renderer.(hooks.BlockquoteRenderer)
 
 	err := cr.RenderBlockquote(
@@ -143,24 +107,12 @@ func (r *htmlRenderer) renderBlockquote(w util.BufWriter, src []byte, node ast.N
 		bqctx,
 	)
 	if err != nil {
-		return ast.WalkContinue, herrors.NewFileErrorFromPos(err, bqctx.createPos())
+		return ast.WalkContinue, herrors.NewFileErrorFromPos(err, bqctx.Position())
 	}
 
 	return ast.WalkContinue, nil
 }
 
-func (r *htmlRenderer) getPageInner(rctx *render.Context) any {
-	pid := rctx.PeekPid()
-	if pid > 0 {
-		if lookup := rctx.DocumentContext().DocumentLookup; lookup != nil {
-			if v := rctx.DocumentContext().DocumentLookup(pid); v != nil {
-				return v
-			}
-		}
-	}
-	return rctx.DocumentContext().Document
-}
-
 // Code borrowed from goldmark's html renderer.
 func (r *htmlRenderer) renderBlockquoteDefault(
 	w util.BufWriter, n ast.Node, text string,
@@ -180,19 +132,11 @@ func (r *htmlRenderer) renderBlockquoteDefault(
 }
 
 type blockquoteContext struct {
-	page      any
-	pageInner any
-	text      hstring.RenderedString
-	typ       string
-	sourceRef []byte
-	alertType string
-	ordinal   int
+	hooks.BaseContext
 
-	// This is only used in error situations and is expensive to create,
-	// so delay creation until needed.
-	pos       htext.Position
-	posInit   sync.Once
-	createPos func() htext.Position
+	text      hstring.RenderedString
+	alertType string
+	typ       string
 
 	*attributes.AttributesHolder
 }
@@ -205,35 +149,10 @@ func (c *blockquoteContext) AlertType() string {
 	return c.alertType
 }
 
-func (c *blockquoteContext) Page() any {
-	return c.page
-}
-
-func (c *blockquoteContext) PageInner() any {
-	return c.pageInner
-}
-
 func (c *blockquoteContext) Text() hstring.RenderedString {
 	return c.text
 }
 
-func (c *blockquoteContext) Ordinal() int {
-	return c.ordinal
-}
-
-func (c *blockquoteContext) Position() htext.Position {
-	c.posInit.Do(func() {
-		c.pos = c.createPos()
-	})
-	return c.pos
-}
-
-func (c *blockquoteContext) PositionerSourceTarget() []byte {
-	return c.sourceRef
-}
-
-var _ hooks.PositionerSourceTargetProvider = (*blockquoteContext)(nil)
-
 // https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax#alerts
 // Five types:
 // [!NOTE], [!TIP], [!WARNING], [!IMPORTANT], [!CAUTION]