Add operators, math, time, string, collection, and HOF builtins to El

engrams/el-lexer/src/lexer.rs

@@ -139,6 +139,9 @@ impl<'src> Lexer<'src> {
             // ── Operators that may be multi-char ────────────────────────────
             '+' => Token::Plus,
             '*' => Token::Star,
+            '%' => Token::Percent,
+            '^' => Token::Caret,
+            '~' => Token::Tilde,
             '-' => {
                 if self.eat('>') {
                     Token::Arrow
@@ -164,14 +167,18 @@ impl<'src> Lexer<'src> {
                 }
             }
             '<' => {
-                if self.eat('=') {
+                if self.eat('<') {
+                    Token::Shl
+                } else if self.eat('=') {
                     Token::LtEq
                 } else {
                     Token::Lt
                 }
             }
             '>' => {
-                if self.eat('=') {
+                if self.eat('>') {
+                    Token::Shr
+                } else if self.eat('=') {
                     Token::GtEq
                 } else {
                     Token::Gt
@@ -181,10 +188,7 @@ impl<'src> Lexer<'src> {
                 if self.eat('&') {
                     Token::And
                 } else {
-                    return Err(LexError::new(
-                        LexErrorKind::UnexpectedChar('&'),
-                        self.span_from(start),
-                    ));
+                    Token::Ampersand
                 }
             }
             '|' => {

engrams/el-lexer/src/token.rs

@@ -194,6 +194,18 @@ pub enum Token {
     Pipe,
     /// `?` — used both for Optional types and the Try operator
     QuestionMark,
+    /// `%` — modulo
+    Percent,
+    /// `&` — bitwise AND
+    Ampersand,
+    /// `^` — bitwise XOR
+    Caret,
+    /// `~` — bitwise NOT
+    Tilde,
+    /// `<<` — left shift
+    Shl,
+    /// `>>` — right shift
+    Shr,
 
     // ── Special ───────────────────────────────────────────────────────────────
     Eof,
@@ -240,6 +252,12 @@ impl std::fmt::Display for Token {
             Token::At => write!(f, "@"),
             Token::Pipe => write!(f, "|"),
             Token::QuestionMark => write!(f, "?"),
+            Token::Percent => write!(f, "%"),
+            Token::Ampersand => write!(f, "&"),
+            Token::Caret => write!(f, "^"),
+            Token::Tilde => write!(f, "~"),
+            Token::Shl => write!(f, "<<"),
+            Token::Shr => write!(f, ">>"),
             Token::BoolLiteral(b) => write!(f, "{b}"),
             Token::IntLiteral(n) => write!(f, "{n}"),
             Token::FloatLiteral(n) => write!(f, "{n}"),