Add solution

1 files changed, 48 insertions, 0 deletions

diff --git a/chall/ply-2.2/test/lex_state_try.py b/chall/ply-2.2/test/lex_state_try.py
new file mode 100644
index 0000000..a16403e
--- /dev/null
+++ b/chall/ply-2.2/test/lex_state_try.py
@@ -0,0 +1,48 @@
+# lex_state2.py
+#
+# Declaration of a state for which no rules are defined
+
+import sys
+sys.path.insert(0,"..")
+
+import ply.lex as lex
+
+tokens = [ 
+    "PLUS",
+    "MINUS",
+    "NUMBER",
+    ]
+
+comment = 1
+states = (('comment', 'exclusive'),)
+
+t_PLUS = r'\+'
+t_MINUS = r'-'
+t_NUMBER = r'\d+'
+
+t_ignore = " \t"
+
+# Comments
+def t_comment(t):
+    r'/\*'
+    t.lexer.begin('comment')
+    print "Entering comment state"
+
+def t_comment_body_part(t):
+    r'(.|\n)*\*/'
+    print "comment body", t
+    t.lexer.begin('INITIAL')
+
+def t_error(t):
+    pass
+
+t_comment_error = t_error
+t_comment_ignore = t_ignore
+
+import sys
+
+lex.lex()
+
+data = "3 + 4 /* This is a comment */ + 10"
+
+lex.runmain(data=data)