Add text content type

*   Add character reference and character escapes in text
*   Add recursive subtokenization

4 files changed, 92 insertions, 13 deletions

diff --git a/src/content/flow.rs b/src/content/flow.rs
index 0d1bd22..6fa8c25 100644
--- a/src/content/flow.rs
+++ b/src/content/flow.rs
@@ -34,7 +34,11 @@ use crate::util::get_span;
 pub fn flow(codes: &[Code], point: Point, index: usize) -> Vec<Event> {
     let mut tokenizer = Tokenizer::new(point, index);
     tokenizer.feed(codes, Box::new(start), true);
-    subtokenize(tokenizer.events, codes)
+    let mut result = (tokenizer.events, false);
+    while !result.1 {
+        result = subtokenize(result.0, codes);
+    }
+    result.0
 }
 
 /// Before flow.
@@ -165,7 +169,7 @@ fn content_before(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
         }
         _ => {
             tokenizer.enter(TokenType::Content);
-            tokenizer.enter(TokenType::ContentChunk);
+            tokenizer.enter(TokenType::ChunkContent);
             content(tokenizer, code, tokenizer.events.len() - 1)
         }
     }
@@ -259,8 +263,8 @@ fn continuation_construct_after_prefix(tokenizer: &mut Tokenizer, code: Code) ->
 
 fn content_continue(tokenizer: &mut Tokenizer, code: Code, previous_index: usize) -> StateFnResult {
     tokenizer.consume(code);
-    tokenizer.exit(TokenType::ContentChunk);
-    tokenizer.enter(TokenType::ContentChunk);
+    tokenizer.exit(TokenType::ChunkContent);
+    tokenizer.enter(TokenType::ChunkContent);
     let next_index = tokenizer.events.len() - 1;
     tokenizer.events[previous_index].next = Some(next_index);
     tokenizer.events[next_index].previous = Some(previous_index);
@@ -271,7 +275,7 @@ fn content_continue(tokenizer: &mut Tokenizer, code: Code, previous_index: usize
 }
 
 fn content_end(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
-    tokenizer.exit(TokenType::ContentChunk);
+    tokenizer.exit(TokenType::ChunkContent);
     tokenizer.exit(TokenType::Content);
     after(tokenizer, code)
 }
diff --git a/src/content/mod.rs b/src/content/mod.rs
index 4c0a7f4..d13df79 100644
--- a/src/content/mod.rs
+++ b/src/content/mod.rs
@@ -4,3 +4,4 @@
 pub mod content;
 pub mod flow;
 pub mod string;
+pub mod text;
diff --git a/src/content/string.rs b/src/content/string.rs
index ff9e3fc..2723785 100644
--- a/src/content/string.rs
+++ b/src/content/string.rs
@@ -17,8 +17,6 @@ use crate::tokenizer::{Code, State, StateFnResult, TokenType, Tokenizer};
 
 /// Before string.
 ///
-/// First we assume character reference.
-///
 /// ```markdown
 /// |&amp;
 /// |\&
@@ -28,11 +26,7 @@ pub fn start(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
     match code {
         Code::None => (State::Ok, None),
         _ => tokenizer.attempt_2(character_reference, character_escape, |ok| {
-            Box::new(if ok {
-                start
-            } else {
-                before_not_character_escape
-            })
+            Box::new(if ok { start } else { before_data })
         })(tokenizer, code),
     }
 }
@@ -44,7 +38,7 @@ pub fn start(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
 /// ```markdown
 /// |qwe
 /// ```
-fn before_not_character_escape(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
+fn before_data(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
     if let Code::None = code {
         (State::Ok, None)
     } else {
diff --git a/src/content/text.rs b/src/content/text.rs
new file mode 100644
index 0000000..2c93b18
--- /dev/null
+++ b/src/content/text.rs
@@ -0,0 +1,80 @@
+//! The text content type.
+//!
+//! **Text** contains phrasing content such as attention (emphasis, strong),
+//! media (links, images), and actual text.
+//!
+//! The constructs found in text are:
+//!
+//! *   Autolink
+//! *   Attention
+//! *   HTML (text)
+//! *   Hard break escape
+//! *   Code (text)
+//! *   Line ending
+//! *   Label start (image)
+//! *   Label start (link)
+//! *   [Character escape][crate::construct::character_escape]
+//! *   [Character reference][crate::construct::character_reference]
+
+use crate::construct::{
+    character_escape::start as character_escape, character_reference::start as character_reference,
+};
+use crate::tokenizer::{Code, State, StateFnResult, TokenType, Tokenizer};
+
+/// Before text.
+///
+/// First we assume character reference.
+///
+/// ```markdown
+/// |&amp;
+/// |\&
+/// |qwe
+/// ```
+pub fn start(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
+    match code {
+        Code::None => (State::Ok, None),
+        _ => tokenizer.attempt_2(character_reference, character_escape, |ok| {
+            Box::new(if ok { start } else { before_data })
+        })(tokenizer, code),
+    }
+}
+
+/// Before text.
+///
+/// We’re at data.
+///
+/// ```markdown
+/// |qwe
+/// ```
+fn before_data(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
+    if let Code::None = code {
+        (State::Ok, None)
+    } else {
+        tokenizer.enter(TokenType::Data);
+        tokenizer.consume(code);
+        (State::Fn(Box::new(in_data)), None)
+    }
+}
+
+/// In data.
+///
+/// ```markdown
+/// q|w|e
+/// ```
+fn in_data(tokenizer: &mut Tokenizer, code: Code) -> StateFnResult {
+    match code {
+        Code::None => {
+            tokenizer.exit(TokenType::Data);
+            (State::Ok, None)
+        }
+        // To do: somehow get these markers from constructs.
+        Code::Char('&' | '\\') => {
+            tokenizer.exit(TokenType::Data);
+            start(tokenizer, code)
+        }
+        _ => {
+            tokenizer.consume(code);
+            (State::Fn(Box::new(in_data)), None)
+        }
+    }
+}