def parse_spectre(netlist_string):
# newlines are part of the grammar, thus redifine the whitespaces without it
ws = ' \t'
_p.ParserElement.setDefaultWhitespaceChars(ws)
# spectre netlist grammar definition
EOL = _p.LineEnd().suppress() # end of line
linebreak = _p.Suppress(
"\\" + _p.LineEnd()) # breaking a line with backslash newline
identifier = _p.Word(_p.alphanums + '_!<>-+') # a name for...
number = _p.Word(_p.nums + ".") # a number
net = identifier # a net
nets = _p.Group(_p.OneOrMore(net('net') | linebreak)) # many nets
cktname = identifier # name of a subcircuit
cktname_end = _p.Keyword("ends").suppress()
comment = _p.Suppress("//" + _p.SkipTo(_p.LineEnd()))
expression = _p.Word(_p.alphanums + '._*+-/()')
inst_param_key = identifier + _p.Suppress("=")
inst_param_value = expression('expression')
inst_parameter = _p.Group(
inst_param_key('name') +
inst_param_value('value')).setResultsName('key')
parameters = _p.Group(
_p.ZeroOrMore(inst_parameter | linebreak)).setResultsName('parameters')
instref = identifier
instname = identifier
instance = _p.Group(
instname('name') + _p.Suppress('(') + nets('nets') + _p.Suppress(')') +
instref('reference') + parameters + EOL).setResultsName('instance')
subcircuit_content = _p.Group(
_p.ZeroOrMore(instance | EOL | comment)).setResultsName('subnetlist')
subcircuit = _p.Group(
# matches subckt <name> <nets> <newline>
_p.Keyword("subckt").suppress() + cktname('name') + nets('nets') + EOL
# matches the content of the subcircuit
+ subcircuit_content
# matches ends <name> <newline>
+ cktname_end + _p.matchPreviousExpr(cktname).suppress() +
EOL).setResultsName('subcircuit')
topcircuit = _p.Group(
# matches subckt <name> <nets> <newline>
_p.Keyword("topckt").suppress() + cktname('name') + nets('nets') + EOL
# matches the content of the subcircuit
+ subcircuit_content
# matches ends <name> <newline>
+ cktname_end + _p.matchPreviousExpr(cktname).suppress() +
EOL).setResultsName('topcircuit')
netlist_element = subcircuit | topcircuit | EOL | comment('comment')
netlist = _p.ZeroOrMore(netlist_element) + _p.StringEnd()
parameters.setParseAction(handle_parameters)
instance.setParseAction(handle_instance)
subcircuit.setParseAction(handle_subcircuit)
topcircuit.setParseAction(handle_topcircuit)
return netlist.parseString(netlist_string)
def parse_hspice(netlist_string):
# newlines are part of the grammar, thus redifine the whitespaces without it
ws = ' \t'
_p.ParserElement.setDefaultWhitespaceChars(ws)
# spectre netlist grammar definition
EOL = _p.LineEnd().suppress() # end of line
linebreak = _p.Suppress(_p.LineEnd() + "+") # breaking a line with backslash newline
identifier=_p.Word(_p.alphanums+'_!<>#') # a name for...
number=_p.Word(_p.nums + ".") # a number
net = identifier # a net
nets = _p.Group(_p.OneOrMore(net('net') + ~_p.FollowedBy("=") | linebreak)) # many nets
cktname = identifier # name of a subcircuit
cktname_end = _p.CaselessLiteral(".ends").suppress()
comment = _p.Suppress("//" + _p.SkipTo(_p.LineEnd())) | _p.Suppress("*" + _p.SkipTo(_p.LineEnd()))
expression = _p.Word(_p.alphanums+'._*+-/()')
inst_param_key = identifier + _p.Suppress("=")
inst_param_value = expression('expression')
inst_parameter = _p.Group(inst_param_key('name') + inst_param_value('value')).setResultsName('key')
parameters = _p.Group(_p.ZeroOrMore(inst_parameter | linebreak)).setResultsName('parameters')
instname = identifier
instnets = _p.Group(_p.OneOrMore(net('net') + ~_p.FollowedBy("=") | linebreak))
instance = _p.Group(instname('name') + instnets('instnets') + parameters + EOL).setResultsName('instance')
subcircuit_content = _p.Group(_p.ZeroOrMore(instance | EOL | comment)).setResultsName('subnetlist')
subcircuit = _p.Group(
# matches subckt <name> <nets> <newline>
_p.CaselessLiteral(".subckt").suppress() + cktname('name') + nets('nets') + EOL
# matches the content of the subcircuit
+ subcircuit_content
# matches ends <name> <newline>
+ cktname_end + _p.matchPreviousExpr(cktname).suppress() + EOL).setResultsName('subcircuit')
netlist_element = subcircuit | instance | EOL | comment('comment')
netlist = _p.ZeroOrMore(netlist_element) + _p.StringEnd()
parameters.setParseAction(handle_parameters)
instance.setParseAction(handle_instance)
subcircuit.setParseAction(handle_subcircuit)
return netlist.parseString(netlist_string);
syntax = (
Optional(hasLiteral('encapsulated')) +
Optional(hasLiteral('partial')) +
Suppress('operator') + Optional(
hasLiteral('function') ^ hasLiteral('record')
) + ClassSpecifier.name('specification')
)
)
class_name = IDENT.name('class_name')
ClassSpecifier.ebnf(
syntax = Or(
(
class_name + StringComment.name('comment') +
Composition.name('composition') +
Suppress('end') + matchPreviousExpr(class_name)
),
(
IDENT.name('class_name') + Suppress('=') +
BasePrefix.name('base_prefix') + Name.name('base_name') +
Optional(ArraySubscripts.name('base_subscripts')) +
Optional(ClassModification.name('base_modification')) +
Comment.name('comment')
),
)
)
### B.2.3 Extends
ClassSpecifier.name('specification')))
Function.ebnf(syntax=(Optional(hasLiteral('encapsulated')) +
Optional(hasLiteral('partial')) + Suppress('function') +
ClassSpecifier.name('specification')))
Operator.ebnf(syntax=(Optional(hasLiteral('encapsulated')) +
Optional(hasLiteral('partial')) + Suppress('operator') +
Optional(hasLiteral('function') ^ hasLiteral('record')) +
ClassSpecifier.name('specification')))
class_name = IDENT.name('class_name')
ClassSpecifier.ebnf(syntax=Or(
(class_name + StringComment.name('comment') +
Composition.name('composition') + Suppress('end') +
matchPreviousExpr(class_name)),
(IDENT.name('class_name') + Suppress('=') +
BasePrefix.name('base_prefix') + Name.name('base_name') +
Optional(ArraySubscripts.name('base_subscripts')) +
Optional(ClassModification.name('base_modification')) +
Comment.name('comment')),
))
### B.2.3 Extends
### B.2.4 Component Clause
### B.2.5 Modification
### B.2.6 Equations
def parse_hspice(self, netlist_file):
"""
@brief parse the input hspice netlist file
@param .sp file
"""
with open(netlist_file, 'r') as fin:
nl = fin.read()
ws = ' \t' #newlines are part of the syntax, thus redefine the whitespaces without it
_p.ParserElement.setDefaultWhitespaceChars(ws)
# spectre netlist grammar definition
EOL = _p.LineEnd().suppress() # end of line
linebreak = _p.Suppress(
_p.LineEnd() + "+") # breaking a line with backslash newline
identifier = _p.Word(_p.alphanums + '_!<>#-+') # a name for...
number = _p.Word(_p.nums + ".") # a number
net = identifier # a net
nets = _p.Group(
_p.OneOrMore(net('net') + ~_p.FollowedBy("=")
| linebreak)) # many nets
cktname = identifier # name of a subcircuit
cktname_end = _p.CaselessLiteral(".ends").suppress()
comment = _p.Suppress("//" +
_p.SkipTo(_p.LineEnd())) | _p.Suppress(
"*" + _p.SkipTo(_p.LineEnd()))
expression = _p.Word(_p.alphanums + '._*+-/()')
inst_param_key = identifier + _p.Suppress("=")
inst_param_value = expression('expression')
inst_parameter = _p.Group(
inst_param_key('name') +
inst_param_value('value')).setResultsName('key')
parameters = _p.Group(
_p.ZeroOrMore(inst_parameter
| linebreak)).setResultsName('parameters')
instname = identifier
instnets = _p.Group(
_p.OneOrMore(net('net') + ~_p.FollowedBy("=") | linebreak))
instance = _p.Group(
instname('name') + instnets('instnets') + parameters +
EOL).setResultsName('instance')
subcircuit_content = _p.Group(
_p.ZeroOrMore(instance | EOL
| comment)).setResultsName('subnetlist')
subcircuit = _p.Group(
# matches subckt <name> <nets> <newline>
_p.CaselessLiteral(".subckt").suppress() + cktname('name') +
_p.Optional(nets('nets')) + EOL
# matches the content of the subcircuit
+ subcircuit_content
# matches ends <name> <newline>
+ cktname_end + _p.matchPreviousExpr(cktname).suppress() +
EOL).setResultsName('subcircuit')
topcircuit = _p.Group(
# matches subckt <name> <nets> <newline>
_p.CaselessLiteral(".topckt").suppress() + cktname('name') +
_p.Optional(nets('nets')) + EOL
# matches the content of the subcircuit
+ subcircuit_content
# matches ends <name> <newline>
+ cktname_end + _p.matchPreviousExpr(cktname).suppress() +
EOL).setResultsName('topcircuit')
netlist_element = topcircuit | subcircuit | EOL | comment(
'comment')
netlist = _p.ZeroOrMore(netlist_element) + _p.StringEnd()
parameters.setParseAction(handle_parameters)
instance.setParseAction(handle_instance)
subcircuit.setParseAction(handle_subcircuit)
topcircuit.setParseAction(handle_topcircuit)
self.raw_netlist = netlist.parseString(
nl
) # Parse the file into raw_netlist and then translate into database
self._finish_raw_parse = True
self.translate_raw_netlist()