add support for single quote

2 files changed, 6 insertions, 1 deletions

diff --git a/neb/__init__.py b/neb/__init__.py
index e93f0dd..a50652d 100644
--- a/neb/__init__.py
+++ b/neb/__init__.py
@@ -15,6 +15,8 @@ def evaluate(expr, env, ns=None):
     if isinstance(expr, Literal) or isinstance(expr, Callable) or isinstance(expr, TypeWrap) or isinstance(expr, List) or isinstance(expr, Handle):
         return expr
     elif isinstance(expr, Symbol) or isinstance(expr, Type):
+        if isinstance(expr, Symbol) and expr.quoted:
+            return Symbol(expr.name, expr.line)
         if env.contains(expr.name):
             if isinstance(expr, Type) and expr.inner is not None:
                 typecopy = deepcopy(env.get(expr.name))
diff --git a/neb/parser.py b/neb/parser.py
index d5712d2..22c51e4 100644
--- a/neb/parser.py
+++ b/neb/parser.py
@@ -29,7 +29,10 @@ def parseExpression(token, prev, tokens):
     return Expr(args), idx + 2  # parens
 
 def parseSymbol(token, prev, tokens):
-    return Symbol(token.text, token.line), 1
+    if token.text.startswith("'"):
+        return Symbol(token.text[1:], token.line, True), 1
+    else:
+        return Symbol(token.text, token.line), 1
 
 def parseLiteral(token, prev, tokens):
     if token.type_ == TokenType.STRING: