Add basic parser

main.py

@@ -1,16 +1,18 @@
-# This is a sample Python script.
-
-# Press Shift+F10 to execute it or replace it with your code.
-# Press Double Shift to search everywhere for classes, files, tool windows, actions, and settings.
+def parse(lines):
+    lines = [line.strip() for line in lines]
+    lines = [line.split("->") for line in lines]
+    rules = [(line[0], line[1].strip().split(" ")) for line in lines]
+    print_rules(rules)
 
 
-def print_hi(name):
-    # Use a breakpoint in the code line below to debug your script.
-    print(f'Hi, {name}')  # Press Ctrl+8 to toggle the breakpoint.
+def print_rules(rules):
+    for rule in rules:
+        print("void parse_%s(...) {" % rule[0])
+        for element in rule[1]:
+            print("    parse_%s(...);" % element)
+        print("}")
 
 
-# Press the green button in the gutter to run the script.
 if __name__ == '__main__':
-    print_hi('PyCharm')
-
-# See PyCharm help at https://www.jetbrains.com/help/pycharm/
+    with open("sample.txt", "r") as f:
+        parse(f.readlines())

sample.txt

@@ -0,0 +1,4 @@
+T -> S u S
+T -> x S y
+S -> a S b
+S ->