| Index: tools/nixysa/third_party/ply-3.1/test/lex_object.py
|
| ===================================================================
|
| --- tools/nixysa/third_party/ply-3.1/test/lex_object.py (revision 0)
|
| +++ tools/nixysa/third_party/ply-3.1/test/lex_object.py (revision 0)
|
| @@ -0,0 +1,55 @@
|
| +# -----------------------------------------------------------------------------
|
| +# lex_object.py
|
| +# -----------------------------------------------------------------------------
|
| +import sys
|
| +
|
| +if ".." not in sys.path: sys.path.insert(0,"..")
|
| +import ply.lex as lex
|
| +
|
| +class CalcLexer:
|
| + 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(self,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(self,t):
|
| + r'\n+'
|
| + t.lineno += t.value.count("\n")
|
| +
|
| + def t_error(self,t):
|
| + print("Illegal character '%s'" % t.value[0])
|
| + t.lexer.skip(1)
|
| +
|
| +
|
| +calc = CalcLexer()
|
| +
|
| +# Build the lexer
|
| +lex.lex(object=calc)
|
| +lex.runmain(data="3+4")
|
| +
|
| +
|
| +
|
| +
|
|
|
| Property changes on: tools/nixysa/third_party/ply-3.1/test/lex_object.py
|
| ___________________________________________________________________
|
| Added: svn:eol-style
|
| + LF
|
|
|
|
|