From f3c1b47a8a5fd3f84789068c8696837ab7ac11c7 Mon Sep 17 00:00:00 2001
From: Tom Alexander <tom@fizz.buzz>
Date: Wed, 19 Apr 2023 21:19:49 -0400
Subject: [PATCH] First attempt at table parser. Table row not yet implemented.

---
 src/parser/element.rs         |  5 +--
 src/parser/greater_element.rs |  6 ++++
 src/parser/table.rs           | 63 ++++++++++++++++++++++++++++++++++-
 3 files changed, 71 insertions(+), 3 deletions(-)

diff --git a/src/parser/element.rs b/src/parser/element.rs
index 9475c40..9f9f97f 100644
--- a/src/parser/element.rs
+++ b/src/parser/element.rs
@@ -19,7 +19,8 @@ use super::Context;
 use super::Drawer;
 use super::PlainListItem;
 use crate::parser::parser_with_context::parser_with_context;
-use crate::parser::table::table;
+use crate::parser::table;
+use crate::parser::table::org_mode_table;
 use nom::branch::alt;
 use nom::combinator::map;
 
@@ -133,7 +134,7 @@ pub fn non_paragraph_element<'r, 's>(
     let footnote_definition_matcher = parser_with_context!(footnote_definition)(context);
     let comment_matcher = parser_with_context!(comment)(context);
     let drawer_matcher = parser_with_context!(drawer)(context);
-    let table_matcher = parser_with_context!(table)(context);
+    let table_matcher = parser_with_context!(org_mode_table)(context);
     alt((
         map(plain_list_matcher, Element::PlainList),
         map(greater_block_matcher, Element::GreaterBlock),
diff --git a/src/parser/greater_element.rs b/src/parser/greater_element.rs
index 96ee656..3054f38 100644
--- a/src/parser/greater_element.rs
+++ b/src/parser/greater_element.rs
@@ -59,4 +59,10 @@ pub struct NodeProperty<'s> {
 #[derive(Debug)]
 pub struct Table<'s> {
     pub source: &'s str,
+    pub children: Vec<TableRow<'s>>,
+}
+
+#[derive(Debug)]
+pub struct TableRow<'s> {
+    pub source: &'s str,
 }
diff --git a/src/parser/table.rs b/src/parser/table.rs
index 05cde93..d83a4bf 100644
--- a/src/parser/table.rs
+++ b/src/parser/table.rs
@@ -1,8 +1,69 @@
+use nom::bytes::complete::tag;
+use nom::character::complete::space0;
+use nom::combinator::not;
+use nom::combinator::peek;
+use nom::combinator::recognize;
+use nom::multi::many_till;
+use nom::sequence::tuple;
+
 use super::Context;
 use crate::parser::error::Res;
+use crate::parser::exiting::ExitClass;
+use crate::parser::greater_element::TableRow;
+use crate::parser::parser_context::ContextElement;
+use crate::parser::parser_context::ExitMatcherNode;
+use crate::parser::parser_with_context::parser_with_context;
+use crate::parser::util::exit_matcher_parser;
+use crate::parser::util::get_consumed;
+use crate::parser::util::maybe_consume_trailing_whitespace_if_not_exiting;
+use crate::parser::util::start_of_line;
 use crate::parser::Table;
 
+/// Parse an org-mode-style table
+///
+/// This is not the table.el style.
 #[tracing::instrument(ret, level = "debug")]
-pub fn table<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, Table<'s>> {
+pub fn org_mode_table<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, Table<'s>> {
+    start_of_line(context, input)?;
+    peek(tuple((space0, tag("|"))))(input)?;
+
+    let parser_context = context
+        .with_additional_node(ContextElement::ConsumeTrailingWhitespace(true))
+        .with_additional_node(ContextElement::Context("table"))
+        .with_additional_node(ContextElement::ExitMatcherNode(ExitMatcherNode {
+            class: ExitClass::Alpha,
+            exit_matcher: &table_end,
+        }));
+
+    let org_mode_table_row_matcher = parser_with_context!(org_mode_table_row)(&parser_context);
+    let exit_matcher = parser_with_context!(exit_matcher_parser)(&parser_context);
+
+    let (remaining, (children, _exit_contents)) =
+        many_till(org_mode_table_row_matcher, exit_matcher)(input)?;
+
+    let (remaining, _trailing_ws) =
+        maybe_consume_trailing_whitespace_if_not_exiting(context, remaining)?;
+    let source = get_consumed(input, remaining);
+
+    Ok((
+        remaining,
+        Table {
+            source,
+            children
+        }
+    ))
+}
+
+#[tracing::instrument(ret, level = "debug")]
+fn table_end<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, &'s str> {
+    start_of_line(context, input)?;
+    recognize(tuple((space0, not(tag("|")))))(input)
+}
+
+#[tracing::instrument(ret, level = "debug")]
+pub fn org_mode_table_row<'r, 's>(
+    context: Context<'r, 's>,
+    input: &'s str,
+) -> Res<&'s str, TableRow<'s>> {
     todo!()
 }