1 files changed, 173 insertions, 0 deletions
diff --git a/src/construct/text.rs b/src/construct/text.rs
new file mode 100644
index 0000000..5c13dba
--- /dev/null
+++ b/src/construct/text.rs
@@ -0,0 +1,173 @@
+//! The text content type.
+//!
+//! **Text** contains phrasing content such as
+//! [attention][crate::construct::attention] (emphasis, strong),
+//! [code (text)][crate::construct::code_text], and actual text.
+//!
+//! The constructs found in text are:
+//!
+//! *   [Attention][crate::construct::attention]
+//! *   [Autolink][crate::construct::autolink]
+//! *   [Character escape][crate::construct::character_escape]
+//! *   [Character reference][crate::construct::character_reference]
+//! *   [Code (text)][crate::construct::code_text]
+//! *   [Hard break (escape)][crate::construct::hard_break_escape]
+//! *   [HTML (text)][crate::construct::html_text]
+//! *   [Label start (image)][crate::construct::label_start_image]
+//! *   [Label start (link)][crate::construct::label_start_link]
+//! *   [Label end][crate::construct::label_end]
+//!
+//! > 👉 **Note**: for performance reasons, hard break (trailing) is formed by
+//! > [whitespace][crate::construct::partial_whitespace].
+
+use crate::construct::partial_whitespace::resolve_whitespace;
+use crate::resolve::Name as ResolveName;
+use crate::state::{Name as StateName, State};
+use crate::tokenizer::Tokenizer;
+
+/// Characters that can start something in text.
+const MARKERS: [u8; 9] = [
+    b'!',  // `label_start_image`
+    b'&',  // `character_reference`
+    b'*',  // `attention`
+    b'<',  // `autolink`, `html_text`
+    b'[',  // `label_start_link`
+    b'\\', // `character_escape`, `hard_break_escape`
+    b']',  // `label_end`
+    b'_',  // `attention`
+    b'`',  // `code_text`
+];
+
+/// Start of text.
+///
+/// ```markdown
+/// > | abc
+///     ^
+/// ```
+pub fn start(tokenizer: &mut Tokenizer) -> State {
+    tokenizer.register_resolver(ResolveName::Text);
+    tokenizer.tokenize_state.markers = &MARKERS;
+    State::Retry(StateName::TextBefore)
+}
+
+/// Before text.
+///
+/// ```markdown
+/// > | abc
+///     ^
+/// ```
+pub fn before(tokenizer: &mut Tokenizer) -> State {
+    match tokenizer.current {
+        None => State::Ok,
+        Some(b'!') => {
+            tokenizer.attempt(
+                State::Next(StateName::TextBefore),
+                State::Next(StateName::TextBeforeData),
+            );
+            State::Retry(StateName::LabelStartImageStart)
+        }
+        Some(b'&') => {
+            tokenizer.attempt(
+                State::Next(StateName::TextBefore),
+                State::Next(StateName::TextBeforeData),
+            );
+            State::Retry(StateName::CharacterReferenceStart)
+        }
+        Some(b'*' | b'_') => {
+            tokenizer.attempt(
+                State::Next(StateName::TextBefore),
+                State::Next(StateName::TextBeforeData),
+            );
+            State::Retry(StateName::AttentionStart)
+        }
+        // `autolink`, `html_text` (order does not matter)
+        Some(b'<') => {
+            tokenizer.attempt(
+                State::Next(StateName::TextBefore),
+                State::Next(StateName::TextBeforeHtml),
+            );
+            State::Retry(StateName::AutolinkStart)
+        }
+        Some(b'[') => {
+            tokenizer.attempt(
+                State::Next(StateName::TextBefore),
+                State::Next(StateName::TextBeforeData),
+            );
+            State::Retry(StateName::LabelStartLinkStart)
+        }
+        Some(b'\\') => {
+            tokenizer.attempt(
+                State::Next(StateName::TextBefore),
+                State::Next(StateName::TextBeforeHardBreakEscape),
+            );
+            State::Retry(StateName::CharacterEscapeStart)
+        }
+        Some(b']') => {
+            tokenizer.attempt(
+                State::Next(StateName::TextBefore),
+                State::Next(StateName::TextBeforeData),
+            );
+            State::Retry(StateName::LabelEndStart)
+        }
+        Some(b'`') => {
+            tokenizer.attempt(
+                State::Next(StateName::TextBefore),
+                State::Next(StateName::TextBeforeData),
+            );
+            State::Retry(StateName::CodeTextStart)
+        }
+        _ => State::Retry(StateName::TextBeforeData),
+    }
+}
+
+/// Before html (text).
+///
+/// At `<`, which wasn’t an autolink.
+///
+/// ```markdown
+/// > | a <b>
+///       ^
+/// ```
+pub fn before_html(tokenizer: &mut Tokenizer) -> State {
+    tokenizer.attempt(
+        State::Next(StateName::TextBefore),
+        State::Next(StateName::TextBeforeData),
+    );
+    State::Retry(StateName::HtmlTextStart)
+}
+
+/// Before hard break escape.
+///
+/// At `\`, which wasn’t a character escape.
+///
+/// ```markdown
+/// > | a \␊
+///       ^
+/// ```
+pub fn before_hard_break_escape(tokenizer: &mut Tokenizer) -> State {
+    tokenizer.attempt(
+        State::Next(StateName::TextBefore),
+        State::Next(StateName::TextBeforeData),
+    );
+    State::Retry(StateName::HardBreakEscapeStart)
+}
+
+/// Before data.
+///
+/// ```markdown
+/// > | a
+///     ^
+/// ```
+pub fn before_data(tokenizer: &mut Tokenizer) -> State {
+    tokenizer.attempt(State::Next(StateName::TextBefore), State::Nok);
+    State::Retry(StateName::DataStart)
+}
+
+/// Resolve whitespace.
+pub fn resolve(tokenizer: &mut Tokenizer) {
+    resolve_whitespace(
+        tokenizer,
+        tokenizer.parse_state.constructs.hard_break_trailing,
+        true,
+    );
+}