Change matrices to be at least 1x2 or 2x1

src/lib.rs

@@ -35,7 +35,6 @@ mod tests {
     use crate::parse;
     use crate::parsing::tokenizer::Tokenizer;
     use crate::parsing::tree_parser::TreeParser;
-    use crate::tokens::Function::Exp;
     use crate::tokens::{Function, Grouping, Misc, Operation, Relation, Text, Token};
     use crate::utils::Boxed;
     use std::fs;
@@ -272,6 +271,24 @@ mod tests {
                 }))]
             }
         );
+        assert_eq!(
+            parse("[[1]]".to_string()),
+            Expression {
+                children: vec![Element::Group(Group::Brackets(Brackets {
+                    inner: Expression {
+                        children: vec![Element::Group(Group::Brackets(Brackets {
+                            inner: Expression {
+                                children: vec![Element::Literal(Literal::Number(Number {
+                                    number: "1".to_string()
+                                })),]
+                            }
+                            .boxed()
+                        })),]
+                    }
+                    .boxed()
+                }))]
+            }
+        );
     }
 
     #[test]
@@ -340,7 +357,8 @@ mod tests {
                     "color(red)(a) * b^4 - c(c-2) [[1, 3, 2 + 2],[3 - x, 4] ((2),(3))".to_string()
                 )
             ),
-        );
+        )
+        .unwrap();
     }
 
     #[bench]

src/parsing/tokenizer.rs

@@ -1,4 +1,3 @@
-use crate::elements::Element;
 use crate::tokens::constants::accents::G_COLOR;
 use crate::tokens::constants::grouping::T_LPAREN;
 use crate::tokens::constants::misc::{A_TEXT, G_NUMALLOWED};
@@ -8,7 +7,6 @@ use crate::tokens::mappings::{
     get_greek_mappings, get_grouping_mappings, get_logical_mappings, get_misc_mappings,
     get_operation_mappings, get_relation_mapping,
 };
-use crate::tokens::Grouping::MatrixEnd;
 use crate::tokens::{
     Accent, Arrow, FontCommand, Function, Greek, Grouping, Logical, Misc, Operation, Relation,
     Text, Token,

src/parsing/tree_parser.rs

@@ -451,7 +451,11 @@ impl TreeParser {
             false
         } else {
             let first_length = matrix.first().unwrap().len();
-            matrix.iter().all(|e| e.len() == first_length)
+            if first_length * matrix.len() == 1 {
+                false
+            } else {
+                matrix.iter().all(|e| e.len() == first_length)
+            }
         }
     }
 }

src/tokens/mod.rs

@@ -152,10 +152,6 @@ pub enum Grouping {
     Floor,
     Ceil,
     Norm,
-    MatrixBegin,
-    MatrixEnd,
-    VecBegin,
-    VecEnd,
     MSep,
 }