More racial template entries

internal/topdata/wiki_native_test.go

@@ -1193,6 +1193,61 @@ func TestWikiTemplateCanRenderRacialFactsAndFeatListInHTML(t *testing.T) {
 	}
 }
 
+func TestWikiTemplateRacialOptionalFactsRenderOnlyWhenPresent(t *testing.T) {
+	ctx := &wikiContext{}
+	template := `{{#if present(ECL)}}ECL={{ECL}}{{/if}}
+{{#if present(PreferredAlignments)}}Preferred={{PreferredAlignments}}{{/if}}
+{{#if present(StartLanguages)}}Start={{StartLanguages}}{{/if}}
+{{#if present(BonusLanguages)}}Bonus={{BonusLanguages}}{{/if}}`
+	page := wikiTemplatePage{
+		PageID:   "racialtypes:human",
+		Category: "racialtypes",
+		Key:      "racialtypes:human",
+		Title:    "Human",
+		Row: map[string]any{
+			"ECL":                 0,
+			"PreferredAlignments": "0x00",
+			"StartLanguages":      "regional",
+			"BonusLanguages":      "all",
+		},
+	}
+
+	got, err := ctx.renderWikiTemplateString("racialtypes.html", template, page)
+	if err != nil {
+		t.Fatalf("render template: %v", err)
+	}
+	for _, want := range []string{
+		"ECL=0",
+		"Preferred=0x00",
+		"Start=regional",
+		"Bonus=all",
+	} {
+		if !strings.Contains(got, want) {
+			t.Fatalf("expected rendered output to contain %q:\n%s", want, got)
+		}
+	}
+
+	page.Row = map[string]any{
+		"ECL":                 nil,
+		"PreferredAlignments": "",
+		"StartLanguages":      "****",
+	}
+	got, err = ctx.renderWikiTemplateString("racialtypes.html", template, page)
+	if err != nil {
+		t.Fatalf("render template with absent values: %v", err)
+	}
+	for _, unwanted := range []string{
+		"ECL=",
+		"Preferred=",
+		"Start=",
+		"Bonus=",
+	} {
+		if strings.Contains(got, unwanted) {
+			t.Fatalf("expected rendered output to omit %q for absent values:\n%s", unwanted, got)
+		}
+	}
+}
+
 func TestWikiTemplateDescriptionFiltersExtractParagraphsAndSections(t *testing.T) {
 	ctx := &wikiContext{}
 	page := wikiTemplatePage{

internal/topdata/wiki_tables.go

@@ -855,9 +855,14 @@ func (p *wikiExprParser) parsePrimary() (any, error) {
 			p.pos++
 			args := []any{}
 			if p.peek().kind != wikiExprRParen {
+				previousAllowMissing := p.allowMissingFields
+				if wikiExprHelperAllowsMissingArgs(token.text) {
+					p.allowMissingFields = true
+				}
 				for {
 					arg, err := p.parseComparison()
 					if err != nil {
+						p.allowMissingFields = previousAllowMissing
 						return nil, err
 					}
 					args = append(args, arg)
@@ -865,6 +870,7 @@ func (p *wikiExprParser) parsePrimary() (any, error) {
 						break
 					}
 				}
+				p.allowMissingFields = previousAllowMissing
 			}
 			if _, ok := p.take(wikiExprRParen); !ok {
 				return nil, fmt.Errorf("missing closing parenthesis for %s", token.text)
@@ -887,6 +893,15 @@ func (p *wikiExprParser) parsePrimary() (any, error) {
 	}
 }
 
+func wikiExprHelperAllowsMissingArgs(name string) bool {
+	switch name {
+	case "present", "all_present", "any_present":
+		return true
+	default:
+		return false
+	}
+}
+
 func (p *wikiExprParser) resolveField(name string) (any, error) {
 	name = strings.TrimPrefix(name, "row.")
 	if name == "HasSpellProgression" {