1 files changed, 54 insertions, 0 deletions
diff --git a/ext/ply/test/lex_closure.py b/ext/ply/test/lex_closure.py
new file mode 100644
index 000000000..30ee67912
--- /dev/null
+++ b/ext/ply/test/lex_closure.py
@@ -0,0 +1,54 @@
+# -----------------------------------------------------------------------------
+# lex_closure.py
+# -----------------------------------------------------------------------------
+import sys
+
+if ".." not in sys.path: sys.path.insert(0,"..")
+import ply.lex as lex
+
+tokens = (
+        'NAME','NUMBER',
+        'PLUS','MINUS','TIMES','DIVIDE','EQUALS',
+        'LPAREN','RPAREN',
+        )
+
+def make_calc():
+
+    # Tokens
+
+    t_PLUS    = r'\+'
+    t_MINUS   = r'-'
+    t_TIMES   = r'\*'
+    t_DIVIDE  = r'/'
+    t_EQUALS  = r'='
+    t_LPAREN  = r'\('
+    t_RPAREN  = r'\)'
+    t_NAME    = r'[a-zA-Z_][a-zA-Z0-9_]*'
+
+    def t_NUMBER(t):
+        r'\d+'
+        try:
+            t.value = int(t.value)
+        except ValueError:
+            print("Integer value too large %s" % t.value)
+            t.value = 0
+        return t
+
+    t_ignore = " \t"
+
+    def t_newline(t):
+        r'\n+'
+        t.lineno += t.value.count("\n")
+        
+    def t_error(t):
+        print("Illegal character '%s'" % t.value[0])
+        t.lexer.skip(1)
+        
+    # Build the lexer
+    return lex.lex()
+
+make_calc()
+lex.runmain(data="3+4")
+
+
+