From ca1404ba53bb0bd8efd19eeba583fbc07aacee53 Mon Sep 17 00:00:00 2001
From: Valk Richard Li <48872266+ValKmjolnir@users.noreply.github.com>
Date: Sun, 20 Oct 2019 13:06:57 +0800
Subject: [PATCH] Add lambda

---
 version1.1/nasal_parser.h | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/version1.1/nasal_parser.h b/version1.1/nasal_parser.h
index 492be1f..2a9aacd 100644
--- a/version1.1/nasal_parser.h
+++ b/version1.1/nasal_parser.h
@@ -1132,7 +1132,32 @@ void nasal_parser::calculation_expr()
 		else if(this_token.type==__number || this_token.type==__string)
 			;
 		else if(this_token.type==__left_curve)
+		{
+			get_token();
+			if(this_token.type==__func)// lambda
+			{
+				function_generate_expr();
+				get_token();
+				if(this_token.type!=__right_curve)
+				{
+					++error;
+					std::cout<<">>[Error] line "<<this_token.line<<": expect a ')' when creating new lambda."<<std::endl;
+					return;
+				}
+				get_token();
+				if(this_token.type!=__left_curve)
+				{
+					++error;
+					std::cout<<">>[Error] line "<<this_token.line<<": expect a '(' when calling a lambda function."<<std::endl;
+					return;
+				}
+				call_function_expr();
+				return;
+			}
+			else
+				parse.push(this_token);
 			in_curve_calc_expr();
+		}
 		else
 		{
 			++error;