def ExpressionHelper(toks, space=Whitespace):
toks = [toks[0]] + [(t | _next_) for t in toks]
for i in range(1, len(toks)):
toks[i] %= dict(next=toks[i - 1], this=toks[i], top=toks[-1])
if space:
for i, tok in enumerate(toks):
if not isinstance(tok, Oper):
toks[i] = Tokens._pad(_sp_, tok)
toks[-1] %= {_sp_: space}
return toks[-1]
def ExpressionHelper(toks, space=Whitespace):
toks = [toks[0]] + [(t|_next_) for t in toks]
for i in range(1, len(toks)):
toks[i] %= dict(next=toks[i-1], this=toks[i], top=toks[-1])
if space:
for i, tok in enumerate(toks):
if not isinstance(tok, Oper):
toks[i] = Tokens._pad(_sp_, tok)
toks[-1] %= {_sp_: space}
return toks[-1]
def oper(symbol, operation=None, ops=BINARY, pos=CENTER):
if isinstance(symbol, basestring):
symtok = Omit(Raw(symbol))
else: symtok = symbol
if ops == BINARY:
if pos == LEFT:
tok = Oper([symtok, _next_, _this_])
elif pos == CENTER:
tok = Oper([_next_, symtok, _this_])
elif pos == RIGHT:
tok = Oper([_next_, _this_, symtok])
elif ops == UNARY:
if pos in (LEFT, CENTER):
tok = Oper([symtok, _next_])
elif pos == RIGHT:
tok = Oper([_next_, symtok])
tok = Tokens._pad(_sp_, tok)
if operation: tok.callback = _funcmap(operation)
tok.name = '<Oper %s>' % symbol
return tok
def oper(symbol, operation=None, ops=BINARY, pos=CENTER):
if isinstance(symbol, basestring):
symtok = Omit(Raw(symbol))
else:
symtok = symbol
if ops == BINARY:
if pos == LEFT:
tok = Oper([symtok, _next_, _this_])
elif pos == CENTER:
tok = Oper([_next_, symtok, _this_])
elif pos == RIGHT:
tok = Oper([_next_, _this_, symtok])
elif ops == UNARY:
if pos in (LEFT, CENTER):
tok = Oper([symtok, _next_])
elif pos == RIGHT:
tok = Oper([_next_, symtok])
tok = Tokens._pad(_sp_, tok)
if operation: tok.callback = _funcmap(operation)
tok.name = '<Oper %s>' % symbol
return tok
