Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

simulators/gem5/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")