Handlers for symbols and operators

src/lex/handlers.rs

@@ -9,8 +9,9 @@ impl Lexer {
         }
     }
 
-    pub fn consume_unknown(&mut self) -> crate::tokens::Token {
-        todo!()
+    pub fn consume_unknown(&mut self, c: char) -> crate::tokens::Token {
+        self.advance();
+        crate::tokens::Token::Unknown(c.to_string())
     }
 
     pub fn consume_identifier_or_keyword(&mut self) -> crate::tokens::Token {
@@ -45,31 +46,31 @@ impl Lexer {
         crate::tokens::Token::Comment(comment)
     }
 
-    pub fn consume_symbol(&mut self) -> crate::tokens::Token {
-        todo!()
+    pub fn consume_symbol(&mut self, c: char) -> crate::tokens::Token {
+        self.advance();
+        let symbol = self.symbols.get(&c.clone());
+        if let Some(token) = symbol {
+            token.clone()
+        } else {
+            crate::tokens::Token::IDENTIFIER(c.to_string())
+        }
     }
+
     pub fn consume_operator(&mut self) -> crate::tokens::Token {
         let mut operator = String::new();
         while let Some(c) = self.current_char {
             operator.push(c);
-            match self.peek() {
-                Some('+') | Some('-') | Some('*') | Some('/') | Some('%') | Some('=')
-                | Some('!') | Some('<') | Some('>') => {
-                    self.advance();
-                    operator.push(
-                        self.current_char
-                            .expect("Critical error while lexing operators! Aborting..."),
-                    );
-                }
-                None => {
-                    self.advance();
-                    break;
-                }
-                _ => {
-                    self.advance();
-                    break;
-                }
-            };
+            if let Some(peeked) = self.peek() {
+                match peeked {
+                    '+' | '-' | '*' | '/' | '%' | '=' | '!' | '<' | '>' => {
+                        self.advance();
+                    }
+                    _ => {
+                        self.advance();
+                        break;
+                    }
+                };
+            }
         }
         crate::tokens::Token::IDENTIFIER(operator)
     }

src/lex/lexer.rs

@@ -1,3 +1,4 @@
+use crate::lex::util::populate_symbols;
 use crate::tokens::Token;
 use std::collections::HashMap;
 use std::sync::Arc;
@@ -12,6 +13,7 @@ pub struct Lexer {
     /// [`char`] under position
     pub current_char: Option<char>,
     pub keywords: HashMap<&'static str, Token>,
+    pub symbols: HashMap<char, Token>,
 }
 
 #[macro_export]
@@ -28,9 +30,11 @@ impl Lexer {
             position: 0,
             current_char: None,
             keywords: HashMap::new(),
+            symbols: HashMap::new(),
         };
         // Populate keywords HashMap
         populate_keywords(&mut lexer);
+        populate_symbols(&mut lexer);
         dbg!("{}", &lexer.keywords);
         lexer.current_char = if lexer.position < lexer.input.len() {
             Some(lexer.input[lexer.position])
@@ -93,8 +97,8 @@ impl Lexer {
                         tokens.push(self.consume_operator());
                     }
 
-                    '{' | '}' | '(' | ')' | '#' | ',' | ';' => {
-                        tokens.push(self.consume_symbol());
+                    '{' | '}' | '(' | ')' | '[' | ']' | ',' | ';' | ':' => {
+                        tokens.push(self.consume_symbol(c.clone()));
                     }
 
                     '.' => {
@@ -102,7 +106,7 @@ impl Lexer {
                     }
 
                     _ => {
-                        tokens.push(self.consume_unknown());
+                        tokens.push(self.consume_unknown(c.clone()));
                     }
                 }
             }

src/lex/util.rs

@@ -1,5 +1,18 @@
 use crate::tokens::{Image, Material, Sampler, Token, Vector};
 
+pub fn populate_symbols(lexer: &mut crate::lex::lexer::Lexer) {
+    lexer.symbols.insert('{', Token::LEFT_BRACE);
+    lexer.symbols.insert('}', Token::RIGHT_BRACE);
+    lexer.symbols.insert('(', Token::LEFT_PAREN);
+    lexer.symbols.insert(')', Token::RIGHT_PAREN);
+    lexer.symbols.insert('[', Token::LEFT_BRACKET);
+    lexer.symbols.insert(']', Token::RIGHT_BRACKET);
+    lexer.symbols.insert('.', Token::DOT);
+    lexer.symbols.insert(',', Token::COMMA);
+    lexer.symbols.insert(':', Token::COLON);
+    lexer.symbols.insert(';', Token::SEMICOLON);
+}
+
 pub fn populate_keywords(lexer: &mut crate::lex::lexer::Lexer) {
     lexer.keywords.insert("const", Token::CONST);
     lexer.keywords.insert("uniform", Token::UNIFORM);

src/lib.rs

@@ -6,29 +6,26 @@
 //! ```
 //! use glsl_lexer::*;
 //!
-//! fn main() {
-//!     let source = r#"
-//!         #version 440
-//!         uniform float time;
-//!         void main() {
-//!             gl_FragColor = vec4(1.0, 0.5, 0.2, 1.0);
-//!         }
-//!     "#;
-//! }
+//! let source = r#"
+//!     #version 440
+//!     uniform float time;
+//!     void main() {
+//!         gl_FragColor = vec4(1.0, 0.5, 0.2, 1.0);
+//!     }
+//! "#;
 //! ```
 
 //! # WIP THAT SHIT STILL WONKY AF
 
 #![allow(dead_code)]
-
+#![allow(non_camel_case_types)]
 pub mod lex;
 mod tokens;
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-    use crate::lex::lexer::Lexer;
-    use crate::tokens::{Image, Token};
+    use super::lex::lexer::Lexer;
+    use super::tokens::{Image, Token};
 
     #[test]
     fn keyword() {
@@ -72,6 +69,28 @@ mod tests {
             .into()
         );
     }
+    #[test]
+    fn test_symbol() {
+        let source = "{}()[],;:";
+        let mut lexer = Lexer::new(source);
+        let tokens = lexer.get_tokens();
+        assert_eq!(
+            tokens,
+            vec![
+                Token::LEFT_BRACE,
+                Token::RIGHT_BRACE,
+                Token::LEFT_PAREN,
+                Token::RIGHT_PAREN,
+                Token::LEFT_BRACKET,
+                Token::RIGHT_BRACKET,
+                Token::COMMA,
+                Token::SEMICOLON,
+                Token::COLON,
+                Token::EOF,
+            ]
+            .into()
+        );
+    }
 }
 // #[cfg(test)]
 // mod tests {

src/tokens.rs

@@ -4,6 +4,7 @@
 pub enum Token {
     EOF,
     Whitespace,
+    Unknown(String),
     Comment(String),
     CONST,
     BOOL,