summaryrefslogtreecommitdiff
path: root/ext/ply/test/lex_opt_alias.py
diff options
context:
space:
mode:
Diffstat (limited to 'ext/ply/test/lex_opt_alias.py')
-rw-r--r--ext/ply/test/lex_opt_alias.py54
1 files changed, 54 insertions, 0 deletions
diff --git a/ext/ply/test/lex_opt_alias.py b/ext/ply/test/lex_opt_alias.py
new file mode 100644
index 000000000..5d5ed4c4e
--- /dev/null
+++ b/ext/ply/test/lex_opt_alias.py
@@ -0,0 +1,54 @@
+# -----------------------------------------------------------------------------
+# lex_opt_alias.py
+#
+# Tests ability to match up functions with states, aliases, and
+# lexing tables.
+# -----------------------------------------------------------------------------
+
+import sys
+if ".." not in sys.path: sys.path.insert(0,"..")
+
+tokens = (
+ 'NAME','NUMBER',
+ )
+
+states = (('instdef','inclusive'),('spam','exclusive'))
+
+literals = ['=','+','-','*','/', '(',')']
+
+# Tokens
+
+def t_instdef_spam_BITS(t):
+ r'[01-]+'
+ return t
+
+t_NAME = r'[a-zA-Z_][a-zA-Z0-9_]*'
+
+def 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_ANY_NUMBER = NUMBER
+
+t_ignore = " \t"
+t_spam_ignore = t_ignore
+
+def t_newline(t):
+ r'\n+'
+ t.lexer.lineno += t.value.count("\n")
+
+def t_error(t):
+ print("Illegal character '%s'" % t.value[0])
+ t.lexer.skip(1)
+
+t_spam_error = t_error
+
+# Build the lexer
+import ply.lex as lex
+lex.lex(optimize=1,lextab="aliastab")
+lex.runmain(data="3+4")