shorten type names

core/parser.go

@@ -1419,31 +1419,14 @@ func (p *Parser) parseSignature() (TypeSignature, error) {
 		name := (*p.prev).Lexeme
 
 		switch name {
-		case "string":
+		case "str":
 			s = &StringSignature{}
 		case "int":
 			s = &IntegerSignature{}
 		case "float":
 			s = &FloatSignature{}
-		case "boolean":
+		case "bool":
 			s = &BooleanSignature{}
-		case "list":
-			if err := p.expect(TokenOpenBracket, "list must have content typed"); err != nil {
-				return nil, err
-			}
-
-			contents, err := p.parseSignature()
-			if err != nil {
-				return nil, err
-			}
-
-			if err := p.expect(TokenCloseBracket, "square brackets enclose list content signature"); err != nil {
-				return nil, err
-			}
-
-			s = &ListSignature{
-				contents,
-			}
 
 		case "any":
 			s = &AnySignature{}