language: add binary operators (#6)

- unary binary not
- infix bitwise and
- infix bitwise or
- infix bitwise exclusive or (xor)

parser/src/main/kotlin/gay/pizza/pork/parser/Parser.kt

@@ -83,7 +83,7 @@ class Parser(source: PeekableSource<Token>, val attribution: NodeAttribution) {
   }
 
   private fun readPrefixOperation(): PrefixOperation = within {
-    expect(TokenType.Negation, TokenType.Plus, TokenType.Minus) {
+    expect(TokenType.Negation, TokenType.Plus, TokenType.Minus, TokenType.Tilde) {
       PrefixOperation(convertPrefixOperator(it), readExpression())
     }
   }
@@ -148,7 +148,7 @@ class Parser(source: PeekableSource<Token>, val attribution: NodeAttribution) {
         readParentheses()
       }
 
-      TokenType.Negation, TokenType.Plus, TokenType.Minus -> {
+      TokenType.Negation, TokenType.Plus, TokenType.Minus, TokenType.Tilde -> {
         readPrefixOperation()
       }
 
@@ -192,6 +192,9 @@ class Parser(source: PeekableSource<Token>, val attribution: NodeAttribution) {
         TokenType.Minus,
         TokenType.Multiply,
         TokenType.Divide,
+        TokenType.Ampersand,
+        TokenType.Pipe,
+        TokenType.Caret,
         TokenType.Equality,
         TokenType.Inequality,
         TokenType.Mod,
@@ -311,6 +314,9 @@ class Parser(source: PeekableSource<Token>, val attribution: NodeAttribution) {
     TokenType.Minus -> InfixOperator.Minus
     TokenType.Multiply -> InfixOperator.Multiply
     TokenType.Divide -> InfixOperator.Divide
+    TokenType.Ampersand -> InfixOperator.BinaryAnd
+    TokenType.Pipe -> InfixOperator.BinaryOr
+    TokenType.Caret -> InfixOperator.BinaryExclusiveOr
     TokenType.Equality -> InfixOperator.Equals
     TokenType.Inequality -> InfixOperator.NotEquals
     TokenType.Mod -> InfixOperator.EuclideanModulo
@@ -325,6 +331,7 @@ class Parser(source: PeekableSource<Token>, val attribution: NodeAttribution) {
   private fun convertPrefixOperator(token: Token): PrefixOperator = when (token.type) {
     TokenType.Plus -> PrefixOperator.UnaryPlus
     TokenType.Minus -> PrefixOperator.UnaryMinus
+    TokenType.Tilde -> PrefixOperator.BinaryNot
     else -> throw RuntimeException("Unknown Prefix Operator")
   }
 

parser/src/main/kotlin/gay/pizza/pork/parser/TokenType.kt

@@ -21,6 +21,10 @@ enum class TokenType(vararg properties: TokenTypeProperty) {
   Minus(SingleChar('-'), OperatorFamily, Promotion('-', MinusMinus)),
   Multiply(SingleChar('*'), OperatorFamily),
   Divide(SingleChar('/'), OperatorFamily),
+  Tilde(SingleChar('~'), OperatorFamily),
+  Ampersand(SingleChar('&'), OperatorFamily),
+  Pipe(SingleChar('|'), OperatorFamily),
+  Caret(SingleChar('^'), OperatorFamily),
   LesserEqual(OperatorFamily),
   GreaterEqual(OperatorFamily),
   Lesser(SingleChar('<'), OperatorFamily, Promotion('=', LesserEqual)),