Merge pull request seeditsolution#289 from vedang6575/patch-1

seeditsolution · web-flow · commit 5bc3d0e1341b · 2020-10-03T19:49:25.000+05:30
class BasicLexer
diff --git a/class BasicLexer with python programming b/class BasicLexer with python programming
@@ -0,0 +1,28 @@
+ tokens = { NAME, NUMBER, STRING } 
+    ignore = '\t '
+    literals = { '=', '+', '-', '/',  
+                '*', '(', ')', ',', ';'} 
+  
+  
+    # Define tokens as regular expressions 
+    # (stored as raw strings) 
+    NAME = r'[a-zA-Z_][a-zA-Z0-9_]*'
+    STRING = r'\".*?\"'
+  
+    # Number token 
+    @_(r'\d+') 
+    def NUMBER(self, t): 
+        
+        # convert it into a python integer 
+        t.value = int(t.value)    return t 
+  
+    # Comment token 
+    @_(r'//.*') 
+    def COMMENT(self, t): 
+        pass
+  
+    # Newline token(used only for showing 
+    # errors in new line) 
+    @_(r'\n+') 
+    def newline(self, t): 
+        self.lineno = t.value.count('\n')
