make inline statements possible

src/jinja.ts

@@ -7,6 +7,7 @@ export interface Node {
 	id: string;
 	type: "root" | "expression" | "statement" | "block" | "ignore";
 	content: string;
+	ownLine: boolean;
 	originalText: string;
 	index: number;
 	length: number;
@@ -15,7 +16,6 @@ export interface Node {
 
 export interface Expression extends Node {
 	type: "expression";
-	ownLine: boolean;
 }
 
 export type Delimiter = "" | "-" | "+";
@@ -35,7 +35,6 @@ export interface Block extends Node {
 
 export interface IgnoreBlock extends Node {
 	type: "ignore";
-	ownLine: boolean;
 }
 
 export type Keyword =

src/parser.ts

@@ -21,6 +21,7 @@ export const parse: Parser<Node>["parse"] = (text) => {
 		id: "0",
 		type: "root" as const,
 		content: text,
+		ownLine: false,
 		originalText: text,
 		index: 0,
 		length: 0,
@@ -101,6 +102,7 @@ export const parse: Parser<Node>["parse"] = (text) => {
 					id: placeholder,
 					type: "statement",
 					content: statement,
+					ownLine: newline,
 					originalText: matchText,
 					index: match.index + i + pre.length,
 					length: matchText.length,
@@ -116,6 +118,7 @@ export const parse: Parser<Node>["parse"] = (text) => {
 					id: generatePlaceholder(),
 					type: "statement" as const,
 					content: statement,
+					ownLine: newline,
 					originalText: matchText,
 					index: match.index + i + pre.length,
 					length: matchText.length,
@@ -154,6 +157,7 @@ export const parse: Parser<Node>["parse"] = (text) => {
 					id: generatePlaceholder(),
 					type: "statement" as const,
 					content: statement,
+					ownLine: newline,
 					originalText: matchText,
 					index: match.index + i + pre.length,
 					length: matchText.length,
@@ -175,6 +179,7 @@ export const parse: Parser<Node>["parse"] = (text) => {
 					start: start,
 					end: end,
 					content,
+					ownLine: newline,
 					originalText: matchText,
 					index: start.index,
 					length: end.index + end.length - start.index,

src/printer.ts

@@ -47,7 +47,7 @@ const printStatement = (node: Statement): builders.Doc => {
 			node.endDelimiter,
 			"%}",
 		],
-		{ shouldBreak: true }
+		{ shouldBreak: node.ownLine }
 	);
 
 	return node.keyword === "else"
@@ -130,10 +130,20 @@ export const embed: Printer<Node>["embed"] = (
 	});
 
 	if (node.type === "block") {
+		if (node.content.includes("\n")) {
+			return builders.group([
+				path.call(print, "nodes", (node as Block).start.id),
+				builders.indent([
+					builders.softline,
+					utils.stripTrailingHardline(mapped),
+				]),
+				builders.hardline,
+				path.call(print, "nodes", (node as Block).end.id),
+			]);
+		}
 		return builders.group([
 			path.call(print, "nodes", (node as Block).start.id),
-			builders.indent([builders.softline, utils.stripTrailingHardline(mapped)]),
+			utils.stripTrailingHardline(mapped),
-			builders.hardline,
 			path.call(print, "nodes", (node as Block).end.id),
 		]);
 	}

test/cases/statement_inline/expected.html

@@ -0,0 +1,3 @@
+<title>{% block title %}{% endblock %}</title>
+
+<div>class="{% if class %}{{ class }}{% endif %}"</div>

test/cases/statement_inline/input.html

@@ -0,0 +1,3 @@
+<title>{%block title%} {%endblock%}</title>
+
+<div>class="{%if class%}{{class}}{%endif%}"</div>