From 274e008e2c775d9c8c888767a6baeaff9e99de9d Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Wed, 13 Jan 2021 16:09:08 +0100
Subject: [PATCH] =?UTF-8?q?Move=20heading=20tests=20to=20integration=20?=
 =?UTF-8?q?=F0=9F=9A=9A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/parse/mod.rs       |  23 +++++++++------------
 src/parse/tests.rs     |  45 -----------------------------------------
 src/parse/tokens.rs    |   1 +
 tests/ref/headings.png | Bin 0 -> 7991 bytes
 tests/typ/headings.typ |  40 ++++++++++++++++++++++++++++++++++++
 5 files changed, 50 insertions(+), 59 deletions(-)
 create mode 100644 tests/ref/headings.png
 create mode 100644 tests/typ/headings.typ

diff --git a/src/parse/mod.rs b/src/parse/mod.rs
index 4483ed765..5fdaa4ce0 100644
--- a/src/parse/mod.rs
+++ b/src/parse/mod.rs
@@ -34,11 +34,9 @@ fn tree(p: &mut Parser) -> Tree {
     let mut at_start = true;
     let mut tree = vec![];
     while !p.eof() {
-        if let Some(node) = p.span_if(|p| node(p, at_start)) {
-            match node.v {
-                Node::Parbreak => at_start = true,
-                Node::Space => {}
-                _ => at_start = false,
+        if let Some(node) = p.span_if(|p| node(p, &mut at_start)) {
+            if !matches!(node.v, Node::Parbreak | Node::Space) {
+                at_start = false;
             }
             tree.push(node);
         }
@@ -47,7 +45,7 @@ fn tree(p: &mut Parser) -> Tree {
 }
 
 /// Parse a syntax node.
-fn node(p: &mut Parser, at_start: bool) -> Option<Node> {
+fn node(p: &mut Parser, at_start: &mut bool) -> Option<Node> {
     let node = match p.peek()? {
         // Bracket call.
         Token::LeftBracket => {
@@ -64,7 +62,7 @@ fn node(p: &mut Parser, at_start: bool) -> Option<Node> {
         Token::Underscore => Node::Emph,
         Token::Tilde => Node::Text("\u{00A0}".into()),
         Token::Hash => {
-            if at_start {
+            if *at_start {
                 return Some(Node::Heading(heading(p)));
             } else {
                 Node::Text(p.get(p.peek_span()).into())
@@ -72,11 +70,8 @@ fn node(p: &mut Parser, at_start: bool) -> Option<Node> {
         }
         Token::Backslash => Node::Linebreak,
         Token::Space(newlines) => {
-            if newlines < 2 {
-                Node::Space
-            } else {
-                Node::Parbreak
-            }
+            *at_start |= newlines > 0;
+            if newlines < 2 { Node::Space } else { Node::Parbreak }
         }
         Token::Text(text) => Node::Text(text.into()),
         Token::Raw(t) => Node::Raw(raw(p, t)),
@@ -122,8 +117,8 @@ fn heading(p: &mut Parser) -> NodeHeading {
 
     // Parse the heading contents.
     let mut contents = vec![];
-    while p.check(|t| !matches!(t, Token::Space(n) if n >= 1)) {
-        if let Some(node) = p.span_if(|p| node(p, false)) {
+    while p.check(|t| !matches!(t, Token::Space(n) if n > 0)) {
+        if let Some(node) = p.span_if(|p| node(p, &mut false)) {
             contents.push(node);
         }
     }
diff --git a/src/parse/tests.rs b/src/parse/tests.rs
index 2e7a2af36..f8b9dcbb1 100644
--- a/src/parse/tests.rs
+++ b/src/parse/tests.rs
@@ -87,10 +87,6 @@ fn Text(text: &str) -> Node {
     Node::Text(text.into())
 }
 
-fn Heading(level: impl Into<Spanned<u8>>, contents: Tree) -> Node {
-    Node::Heading(NodeHeading { level: level.into(), contents })
-}
-
 fn Raw(lang: Option<&str>, lines: &[&str], inline: bool) -> Node {
     Node::Raw(NodeRaw {
         lang: lang.map(|id| Ident(id.into())),
@@ -246,47 +242,6 @@ fn test_parse_simple_nodes() {
                  S(1..2, "unexpected closing brace")]);
 }
 
-#[test]
-fn test_parse_headings() {
-    // Basics with spans.
-    t!("# a"
-        nodes: [S(0..3, Heading(S(0..1, 0), Template![
-            @S(1..2, Space), S(2..3, Text("a"))
-        ]))],
-        spans: true);
-
-    // Multiple hashtags.
-    t!("### three"   Heading(2, Template![@Space, Text("three")]));
-    t!("###### six" Heading(5, Template![@Space, Text("six")]));
-
-    // Start of heading.
-    t!("/**/#"    Heading(0, Template![@]));
-    t!("[f][# ok]" Call!("f", Args![Template![Heading(0, Template![
-        @Space, Text("ok")
-    ])]]));
-
-    // End of heading.
-    t!("# a\nb" Heading(0, Template![@Space, Text("a")]), Space, Text("b"));
-
-    // Continued heading.
-    t!("# a{\n1\n}b"   Heading(0, Template![
-        @Space, Text("a"), Block!(Int(1)), Text("b")
-    ]));
-    t!("# a[f][\n\n]d" Heading(0, Template![@
-        Space, Text("a"), Call!("f", Args![Template![Parbreak]]), Text("d"),
-    ]));
-
-    // No heading.
-    t!(r"\#"    Text("#"));
-    t!("Nr. #1" Text("Nr."), Space, Text("#"), Text("1"));
-    t!("[v]#"   Call!("v"), Text("#"));
-
-    // Too many hashtags.
-    t!("####### seven"
-        nodes: [Heading(5, Template![@Space, Text("seven")])],
-        warnings: [S(0..7, "section depth should not exceed 6")]);
-}
-
 #[test]
 fn test_parse_raw() {
     // Basic, mostly tested in tokenizer and resolver.
diff --git a/src/parse/tokens.rs b/src/parse/tokens.rs
index 32cc11d9c..7741d27f8 100644
--- a/src/parse/tokens.rs
+++ b/src/parse/tokens.rs
@@ -567,6 +567,7 @@ mod tests {
         // Test markup tokens.
         t!(Markup[" a1"]: "*"  => Star);
         t!(Markup: "_"         => Underscore);
+        t!(Markup[""]: "###"   => Hash, Hash, Hash);
         t!(Markup["a1/"]: "# " => Hash, Space(0));
         t!(Markup: "~"         => Tilde);
         t!(Markup[" "]: r"\"   => Backslash);
diff --git a/tests/ref/headings.png b/tests/ref/headings.png
new file mode 100644
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diff --git a/tests/typ/headings.typ b/tests/typ/headings.typ
new file mode 100644
index 000000000..88c76ad38
--- /dev/null
+++ b/tests/typ/headings.typ
@@ -0,0 +1,40 @@
+// Number of hashtags.
+//
+// warning: 5:1-5:8 section depth should not exceed 6
+
+# One
+### Three
+###### Six
+####### Seven
+
+---
+// Is a heading.
+
+/**/ # Heading
+{[## Heading]}
+[box][### Heading]
+
+---
+// Is no heading.
+//
+// error: 4:1-4:6 unexpected invalid token
+
+\# No heading
+
+Text with # hashtag
+
+#nope
+
+---
+// Heading continues over linebreak.
+
+# This {
+    "works"
+}
+
+# [box][
+    This
+] too
+
+# This
+does not