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author | Gabe Black <gblack@eecs.umich.edu> | 2009-08-17 00:21:57 -0700 |
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committer | Gabe Black <gblack@eecs.umich.edu> | 2009-08-17 00:21:57 -0700 |
commit | a43ae579dd3128a0ced2238532f26d99db197361 (patch) | |
tree | 271a90c0fdfde8b58180ee494c528a3fbec57588 /ext/ply/test/lex_optimize3.py | |
parent | 32c8514b450a7dda77a3963d00642fcc5de658da (diff) | |
parent | a6b39c07d9d03955382a0e930b363c6e6fd4b942 (diff) | |
download | gem5-a43ae579dd3128a0ced2238532f26d99db197361.tar.xz |
Merge with head.
Diffstat (limited to 'ext/ply/test/lex_optimize3.py')
-rw-r--r-- | ext/ply/test/lex_optimize3.py | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/ext/ply/test/lex_optimize3.py b/ext/ply/test/lex_optimize3.py new file mode 100644 index 000000000..c6c8cce65 --- /dev/null +++ b/ext/ply/test/lex_optimize3.py @@ -0,0 +1,52 @@ +# ----------------------------------------------------------------------------- +# lex_optimize3.py +# +# Writes table in a subdirectory structure. +# ----------------------------------------------------------------------------- +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', + ) + +# 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 +lex.lex(optimize=1,lextab="lexdir.sub.calctab",outputdir="lexdir/sub") +lex.runmain(data="3+4") + + + |