Improved tuple parsing

src/errors.rs

@@ -11,6 +11,7 @@ pub enum DaisyError {
 	BadNumber,
 	BadVariable,
 	BadFunction,
+	BadTuple,
 
 	// Evaluation errors
 	BadMath,
@@ -58,7 +59,12 @@ impl DaisyError {
 				return FormattedText::new(
 					"[e]Syntax Error:[n] Bad function name".to_string()
 				);
-			}
+			},
+			DaisyError::BadTuple => {
+				return FormattedText::new(
+					"[e]Syntax Error:[n] Bad tuple syntax".to_string()
+				);
+			},
 
 
 			DaisyError::BadMath => {

src/evaluate/operator.rs

@@ -1,4 +1,3 @@
-use std::collections::VecDeque;
 use crate::parser::LineLocation;
 use crate::quantity::Quantity;
 use crate::parser::Operator;
@@ -59,32 +58,6 @@ pub fn eval_operator(g: &Expression, context: &mut Context) -> Result<Option<Exp
 			return Ok(Some(r));
 		},
 
-		Operator::Tuple => {
-			if args.len() != 2 { panic!() };
-			let a = &args[0];
-			let b = &args[1];
-
-			let mut loc = *op_loc;
-			let mut vec: VecDeque<Expression> = VecDeque::new();
-			if let Expression::Tuple(l, v) = a {
-				loc += *l;
-				for i in v { vec.push_back(i.clone()) }
-			} else {
-				loc += a.get_linelocation();
-				vec.push_back(a.clone())
-			}
-
-			if let Expression::Tuple(l, v) = b {
-				loc += *l;
-				for i in v { vec.push_back(i.clone()) }
-			} else {
-				loc += b.get_linelocation();
-				vec.push_back(b.clone())
-			}
-
-			return Ok(Some(Expression::Tuple(loc, vec)))
-		}
-
 		Operator::Negative => {
 			if args.len() != 1 { panic!() };
 			let args = &args[0];

src/parser/expression/operator.rs

@@ -15,9 +15,7 @@ use super::Function;
 pub enum Operator {
 	// When adding operators, don't forget to update help command text.
 	// It isn't automatically generated.
-	Tuple = 0,
-
-	ModuloLong, // Mod invoked with "mod"
+	ModuloLong = 0, // Mod invoked with "mod"
 	DivideLong, // Division invoked with "per"
 	UnitConvert,
 	Subtract,
@@ -76,7 +74,6 @@ impl Operator {
 		}
 
 		return match s {
-			","      => {Some( Operator::Tuple )},
 			"+"      => {Some( Operator::Add )},
 			"-"      => {Some( Operator::Subtract )},
 			"neg"    => {Some( Operator::Negative )},
@@ -155,14 +152,6 @@ impl Operator {
 
 	pub fn print(&self, args: &VecDeque<Expression>) -> String {
 		match self {
-			Operator::Tuple => {
-				return format!(
-					"{}, {}",
-					self.add_parens_to_arg(&args[0]),
-					self.add_parens_to_arg(&args[1])
-				);
-			},
-
 			Operator::Negative => {
 				return format!("-{}", self.add_parens_to_arg(&args[0]));
 			},

src/parser/stage/groupify.rs

@@ -209,6 +209,13 @@ pub fn groupify(
 	let mut levels: Vec<(LineLocation, VecDeque<Token>)> = Vec::with_capacity(8);
 	levels.push((LineLocation{pos: 0, len: last_linelocation.pos + last_linelocation.len}, VecDeque::with_capacity(8)));
 
+	// Group types
+	// if true, this is a tuple.
+	// if false, this is a group.
+	let mut is_tuple: Vec<bool> = Vec::with_capacity(8);
+	is_tuple.push(false);
+
+
 	// Makes sure parenthesis are matched
 	let mut i_level = 0;
 
@@ -219,6 +226,7 @@ pub fn groupify(
 		match t {
 			Token::GroupStart(l) => {
 				levels.push((l, VecDeque::with_capacity(8)));
+				is_tuple.push(false);
 				i_level += 1;
 			},
 
@@ -234,14 +242,23 @@ pub fn groupify(
 				let (_, v_now) = levels.last_mut().unwrap();
 				lookback(&mut v, context)?;
 
+				let q = is_tuple.pop().unwrap();
+				if q {
+					v_now.push_back(Token::new_tuple(l, v)?);
+				} else {
 					v_now.push_back(Token::Group(l, v));
+				}
+			},
+
+			Token::TupleDelim(_) => {
+				*is_tuple.last_mut().unwrap() = true;
+				v_now.push_back(t);
 			},
 
 			_ => {
 				v_now.push_back(t);
 			}
 		}
-
 	}
 
 	/*
@@ -260,12 +277,27 @@ pub fn groupify(
 		if v.len() == 0 { return Err((l, DaisyError::EmptyGroup)) }
 		lookback(&mut v, context)?;
 
+		let q = is_tuple.pop().unwrap();
+		if q {
+			v_now.push_back(Token::new_tuple(l, v)?);
+		} else {
 			v_now.push_back(Token::Group(l, v));
 		}
+	}
 
 
-	let (_, mut v) = levels.pop().unwrap();
+
+	let (l, mut v) = levels.pop().unwrap();
+	let q = is_tuple.pop().unwrap();
+
+	if q {
+		return Err((l, DaisyError::BadTuple));
+	}
+
 	lookback(&mut v, context)?;
 
-	return Ok(Token::Group(LineLocation{pos:0, len:last_linelocation.pos + last_linelocation.len}, v));
+	return Ok(Token::Group(
+		LineLocation{pos:0, len:last_linelocation.pos + last_linelocation.len},
+		v
+	));
 }

src/parser/stage/tokenize.rs

@@ -20,7 +20,8 @@ fn push_token(
 	let mut t = t.unwrap();
 
 	match t {
-		Token::GroupStart(ref mut l)
+		Token::TupleDelim(ref mut l)
+		| Token::GroupStart(ref mut l)
 		| Token::GroupEnd(ref mut l)
 		| Token::Operator(ref mut l, _)
 		| Token::Quantity(ref mut l, _)
@@ -33,6 +34,7 @@ fn push_token(
 		},
 
 		Token::Group(_,_)
+		| Token::Tuple(_,_)
 		| Token::Container(_)
 		=> unreachable!()
 	};
@@ -143,10 +145,7 @@ pub fn tokenize(input: &String, context: &Context) -> VecDeque<Token> {
 
 			',' => {
 				push_token(&mut g, t, i, context);
-				t = Some(Token::Operator(
-					LineLocation{pos: i, len: 1},
-					String::from(c)
-				));
+				t = Some(Token::TupleDelim(LineLocation{pos: i, len: 1}));
 			},
 
 			// Operator

src/parser/stage/treeify.rs

@@ -124,6 +124,9 @@ fn treeify_binary(
 		if let Token::Group(l, _) = right_pre {
 			right = treeify(right_pre, context)?;
 			right.set_linelocation(&(right.get_linelocation() + l));
+		} else if let Token::Tuple(l, _) = right_pre {
+			right = treeify(right_pre, context)?;
+			right.set_linelocation(&(right.get_linelocation() + l));
 		} else {
 			right = right_pre.to_expression(context)?;
 		}
@@ -131,6 +134,9 @@ fn treeify_binary(
 		if let Token::Group(l, _) = left_pre {
 			left = treeify(left_pre, context)?;
 			left.set_linelocation(&(left.get_linelocation() + l));
+		} else if let Token::Tuple(l, _) = left_pre {
+			left = treeify(left_pre, context)?;
+			left.set_linelocation(&(left.get_linelocation() + l));
 		} else {
 			left = left_pre.to_expression(context)?;
 		}
@@ -251,6 +257,9 @@ fn treeify_unary(
 			if let Token::Group(l, _) = next_pre {
 				next = treeify(next_pre, context)?;
 				next.set_linelocation(&(next.get_linelocation() + l));
+			} else if let Token::Tuple(l, _) = next_pre {
+				next = treeify(next_pre, context)?;
+				next.set_linelocation(&(next.get_linelocation() + l));
 			} else {
 				next = next_pre.to_expression(context)?;
 			}
@@ -286,8 +295,17 @@ pub fn treeify(
 	mut g: Token,
 	context: &Context
 ) -> Result<Expression, (LineLocation, DaisyError)> {
+
 	let (l, g_inner): (LineLocation, &mut VecDeque<Token>) = match g {
 		Token::Group(l, ref mut x) => (l, x),
+		Token::Tuple(l, parts) => {
+			let mut t: VecDeque<Expression> = VecDeque::new();
+			for p in parts {
+				t.push_back(treeify(p, context)?);
+			};
+
+			return Ok(Expression::Tuple(l, t));
+		},
 		_ => panic!()
 	};
 
@@ -358,10 +376,12 @@ pub fn treeify(
 		Token::Operator(l, _) => {
 			Err((l, DaisyError::Syntax))
 		},
+		Token::Tuple(_, _) |
 		Token::Group(_,_) => {
 			treeify(g, context)
 		},
 
+
 		_ => { Ok(g.to_expression(context)?) }
 	};
 }

src/parser/token.rs

@@ -17,9 +17,11 @@ pub enum Token {
 	Word(LineLocation, String),
 	Operator(LineLocation, String),
 
+	TupleDelim(LineLocation),
 	GroupStart(LineLocation),
 	GroupEnd(LineLocation),
 	Group(LineLocation, VecDeque<Token>),
+	Tuple(LineLocation, VecDeque<Token>),
 
 	// Never parsed from input, used to build a tree.
 	Container(Expression)
@@ -32,9 +34,11 @@ impl Token {
 			Token::Quantity(l, _)
 			| Token::Word(l, _)
 			| Token::Operator(l, _)
+			| Token::TupleDelim(l)
 			| Token::GroupStart(l)
 			| Token::GroupEnd(l)
 			| Token::Group(l, _)
+			| Token::Tuple(l, _)
 			=> l.clone(),
 
 			Token::Container(_) => panic!("Containers do not have a linelocation.")
@@ -47,9 +51,11 @@ impl Token {
 			Token::Quantity(l, _)
 			| Token::Word(l, _)
 			| Token::Operator(l, _)
+			| Token::TupleDelim(l)
 			| Token::GroupStart(l)
 			| Token::GroupEnd(l)
 			| Token::Group(l, _)
+			| Token::Tuple(l, _)
 			=> l,
 
 			Token::Container(_) => panic!("Containers do not have a linelocation.")
@@ -93,9 +99,49 @@ impl Token {
 			Token::Operator(_,_)
 			| Token::GroupStart(_)
 			| Token::GroupEnd(_)
-			| Token::Group(_, _)
+			| Token::Group(_,_)
+			| Token::TupleDelim(_)
+			| Token::Tuple(_,_)
 			=> panic!("This token cannot be converted to an expression")
 		};
 	}
 
+
+	pub fn new_tuple(l: LineLocation, v: VecDeque<Token>) -> Result<Token, (LineLocation, DaisyError)> {
+		let mut parts: VecDeque<Token> = VecDeque::new();
+		let mut now: VecDeque<Token> = VecDeque::new();
+
+		let mut loc = LineLocation::new_zero();
+
+		for t in v {
+			match t {
+				Token::TupleDelim(_) => {
+					if now.len() == 0 {
+						return Err((l, DaisyError::BadTuple))
+					}
+
+					let g = Token::Group(loc, now);
+					parts.push_back(g);
+
+					loc = LineLocation::new_zero();
+					now = VecDeque::new();
+				},
+
+				_ => {
+					loc += t.get_linelocation();
+					now.push_back(t);
+				}
+			}
+		}
+
+		// Push last group
+		if now.len() == 0 {
+			return Err((l, DaisyError::BadTuple))
+		}
+		let g = Token::Group(loc, now);
+		parts.push_back(g);
+
+		return Ok(Token::Tuple(l, parts));
+	}
+
 }