Add handler for operators; README

README.md

@@ -0,0 +1,12 @@
+# GLSL-LEXER
+A library providing lexing capabilities for GLSL 460 and it's subsets.
+
+---
+
+## 👷🏻‍♀️ UNDER CONSTRUCTION 🚧
+
+--- 
+## Features
+- [ ] Building Syntax Tree
+- [ ] Exporting Syntax Tree as graphviz
+- [ ] Integration with [epoqe demo toolchain](https://www.pouet.net/groups.php?which=15323)

src/lex/handlers.rs

@@ -49,6 +49,28 @@ impl Lexer {
         todo!()
     }
     pub fn consume_operator(&mut self) -> crate::tokens::Token {
-        todo!()
+        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;
+                }
+            };
+        }
+        crate::tokens::Token::IDENTIFIER(operator)
     }
 }

src/lex/lexer.rs

@@ -2,7 +2,7 @@ use crate::tokens::Token;
 use std::collections::HashMap;
 use std::sync::Arc;
 
-use super::util::populate_tokens;
+use super::util::populate_keywords;
 
 pub struct Lexer {
     /// GLSL source
@@ -29,7 +29,8 @@ impl Lexer {
             current_char: None,
             keywords: HashMap::new(),
         };
-        populate_tokens(&mut lexer);
+        // Populate keywords HashMap
+        populate_keywords(&mut lexer);
         dbg!("{}", &lexer.keywords);
         lexer.current_char = if lexer.position < lexer.input.len() {
             Some(lexer.input[lexer.position])

src/lex/util.rs

@@ -1,6 +1,6 @@
 use crate::tokens::{Image, Material, Sampler, Token, Vector};
 
-pub fn populate_tokens(lexer: &mut crate::lex::lexer::Lexer) {
+pub fn populate_keywords(lexer: &mut crate::lex::lexer::Lexer) {
     lexer.keywords.insert("const", Token::CONST);
     lexer.keywords.insert("uniform", Token::UNIFORM);
     lexer.keywords.insert("buffer", Token::BUFFER);