feat: table syntax and formatting

examples/daleth.dlth

@@ -117,7 +117,7 @@ row [
     ]]
 ]
 
-# Table has custom format if text used
+# Table has custom format
 # +| cells | - primary column
 #  | cells | - secondary column
 #  | Element | Description | - converts to
@@ -125,14 +125,14 @@ row [
 #    Element
 #    Description
 #  ]
-# table {
-#     +| Tag      | Description     |
-#      | h        | Heading         |
-#      | p        | Paragraph       |
-#      | img      | Image           |
-#      | link     | Link            |
-#      | btn      | Button          |
-#      | ul       | Unordered list  |
-#      | br       | Line break      |
-#     +| quantity | 7               |
-# }
+{> table
+    [[ Tag      | Description    ]]
+     [ h        | Heading        ]
+     [ p        | Paragraph      ]
+     [ img      | Image          ]
+     [ link     | Link           ]
+     [ btn      | Button         ]
+     [ ul       | Unordered list ]
+     [ br       | Line break     ]
+    [[ quantity | 7              ]]
+}

src/daleth/custom_parsers/mod.rs

@@ -0,0 +1,123 @@
+#[derive(Clone, Debug, PartialEq)]
+pub enum TableCol<'src> {
+    Primary(Vec<&'src str>),
+    Secondary(Vec<&'src str>),
+}
+
+use std::collections::HashMap;
+
+use chumsky::prelude::*;
+
+use crate::typed::{NNBody, Tag};
+
+use super::types::Span;
+
+pub fn table_to_tag(rows: &Vec<TableCol>) -> Tag {
+    Tag::Table(
+        rows.into_iter()
+            .map(|row| match row {
+                TableCol::Primary(row) => Tag::Tpcol(
+                    row.into_iter()
+                        .map(|t| Tag::El(NNBody::Text(format!("{t}"))))
+                        .collect(),
+                ),
+                TableCol::Secondary(row) => Tag::Tcol(
+                    row.into_iter()
+                        .map(|t| Tag::El(NNBody::Text(format!("{t}"))))
+                        .collect(),
+                ),
+            })
+            .collect(),
+    )
+}
+
+pub fn table_to_string(rows: &Vec<TableCol>) -> String {
+    let mut max_len: HashMap<usize, usize> = HashMap::new();
+    let mut been_primary = false;
+
+    let mut result = String::new();
+
+    for row in rows {
+        let row = match row {
+            TableCol::Primary(row) => {
+                been_primary = true;
+                row
+            }
+            TableCol::Secondary(row) => row,
+        };
+
+        for i in 0..row.len() {
+            let current = max_len.get(&i).unwrap_or(&0);
+
+            if *current <= row[i].len() {
+                max_len.insert(i, row[i].len());
+            }
+        }
+    }
+
+    for row in rows {
+        let mut primary = false;
+        let row = match row {
+            TableCol::Primary(row) => {
+                primary = true;
+                result.push_str("[[ ");
+
+                row
+            }
+            TableCol::Secondary(row) => {
+                if been_primary {
+                    result.push_str(" [ ");
+                } else {
+                    result.push_str("[ ");
+                }
+
+                row
+            }
+        };
+
+        let mut cells: Vec<String> = vec![];
+
+        for (i, col) in row.iter().enumerate() {
+            let max = max_len.get(&i).unwrap_or(&0);
+
+            cells.push(format!("{}{}", col, " ".repeat(max - col.len())))
+        }
+
+        result.push_str(&cells.join(" | "));
+
+        if primary {
+            result.push_str(" ]]\n");
+        } else {
+            result.push_str(" ]\n");
+        }
+    }
+
+    result
+}
+
+pub fn table_parser<'src>(
+) -> impl Parser<'src, &'src str, Vec<TableCol<'src>>, extra::Err<Rich<'src, char, Span>>> {
+    let escape = just('\\')
+        .ignore_then(choice((just('|'), just(']'), just('\\'))))
+        .labelled("Table escape sequence");
+
+    let cell = none_of("\\|]")
+        .or(escape)
+        .repeated()
+        .to_slice()
+        .map(|s: &str| s.trim());
+
+    let col_body = cell.separated_by(just("|")).collect();
+
+    let primary_col = just("[[")
+        .ignore_then(col_body)
+        .then_ignore(just("]]"))
+        .map(TableCol::Primary);
+
+    let secondary_col = just("[")
+        .ignore_then(col_body)
+        .then_ignore(just("]"))
+        .map(TableCol::Secondary);
+
+    primary_col.or(secondary_col).padded().repeated().collect()
+}

src/daleth/format.rs

@@ -1,4 +1,5 @@
 use super::{
+    custom_parsers::table_to_string,
     lexer::types::Token,
     types::Spanned,
     utils::{prepend_indent, set_indent},
@@ -151,6 +152,11 @@ pub fn format<'src>(spanned_tokens: &Vec<Spanned<Token<'src>>>) -> String {
                 set_indent(t, current_indent + 1),
                 prepend_indent("}", current_indent)
             ),
+            Token::TableSyntax(rows) => format!(
+                "{{> table\n{}\n{}\n",
+                set_indent(&table_to_string(rows), current_indent + 1),
+                prepend_indent("}", current_indent)
+            ),
 
             Token::EmptyLine => "\n".to_owned(),
         };

src/daleth/lexer/mod.rs

@@ -3,7 +3,10 @@ pub mod types;
 use chumsky::prelude::*;
 use types::*;
 
-use super::types::{Span, Spanned};
+use super::{
+    custom_parsers::table_parser,
+    types::{Span, Spanned},
+};
 
 pub fn lexer<'src>(
 ) -> impl Parser<'src, &'src str, Vec<Spanned<Token<'src>>>, extra::Err<Rich<'src, char, Span>>> {
@@ -112,10 +115,7 @@ fn textual<'src>() -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<
         .ignore_then(choice((just('}'), just('\\'))))
         .labelled("Multi-line escape sequence");
 
-    let text = none_of("\n")
-        .repeated()
-        .to_slice()
-        .padded_by(text::inline_whitespace());
+    let text = none_of("\n").repeated().to_slice().map(|s: &str| s.trim());
 
     let text_body = just(':')
         .ignore_then(text)
@@ -139,6 +139,11 @@ fn textual<'src>() -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<
         .map(Token::Paragraph)
         .labelled("Paragraph syntax");
 
+    let table_syntax = table_parser()
+        .delimited_by(just("{> table"), just("}"))
+        .map(Token::TableSyntax)
+        .labelled("Table syntax");
+
     let mltext = multiline_text_body
         .clone()
         .delimited_by(just('{'), just('}'))
@@ -162,7 +167,15 @@ fn textual<'src>() -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<
         .map(Token::MLRText)
         .labelled("Raw multiline text");
 
-    choice((paragraph, mlmstext, rmltext, mltext, text_body, text_tag))
+    choice((
+        table_syntax,
+        paragraph,
+        mlmstext,
+        rmltext,
+        mltext,
+        text_body,
+        text_tag,
+    ))
 }
 
 fn comment<'src>() -> impl Parser<'src, &'src str, Token<'src>, extra::Err<Rich<'src, char, Span>>>

src/daleth/lexer/types.rs

@@ -1,5 +1,7 @@
 use core::fmt;
 
+use crate::daleth::custom_parsers::TableCol;
+
 #[derive(Clone, Debug, PartialEq)]
 pub enum Token<'src> {
     // Symbols
@@ -28,6 +30,7 @@ pub enum Token<'src> {
     // Special
     TextTag(&'src str),
     Paragraph(&'src str),
+    TableSyntax(Vec<TableCol<'src>>),
 
     // Special for formatting, ignored for parse
     Comment(&'src str),
@@ -115,6 +118,7 @@ impl<'src> fmt::Display for Token<'src> {
             Token::Code => write!(f, "code"),
             Token::Pre => write!(f, "pre"),
             Token::Meta => write!(f, "meta"),
+            Token::TableSyntax(_) => write!(f, "table syntax"),
         }
     }
 }

src/daleth/mod.rs

@@ -1,5 +1,6 @@
+pub mod custom_parsers;
 pub mod format;
 pub mod lexer;
 pub mod parser;
 pub mod types;
-pub mod utils;
+mod utils;

src/daleth/parser/mod.rs

@@ -1,6 +1,7 @@
 pub mod types;
 
 use super::{
+    custom_parsers::table_to_tag,
     lexer::types::Token,
     types::Span,
     utils::{set_spaces, trim_indent},
@@ -178,11 +179,15 @@ pub fn tag<'tokens, 'src: 'tokens>(
         }
         .labelled("Paragraph");
 
+        let table_syntax = select! {
+            Token::TableSyntax(rows) => table_to_tag(&rows)
+        };
+
         choice((
             el, h, p, br, ul, ol, row, link, navlink, btn, navbtn, img, table, tcol, tpcol, hr, b,
             i, bq, footlnk, footn, a, s, sup, sub, disc,
         ))
         .or(choice((block, carousel, code, pre, meta)))
-        .or(choice((el_text, el_tags, paragraph)))
+        .or(choice((el_text, el_tags, paragraph, table_syntax)))
     })
 }