On May 14, 6:07*pm, rh0dium <steven.kl...@gmail.comwrote:
Hi all,
I almost did my first pyparsing without help but here we go again.
Let's start with my code. *The sample data is listed below.
<snip...>
x = *cells.parseString(data)
print x[0].asDict()
reveals
{'pins': ([(['A', 'Input'], {'direction': [('Input', 1)], 'name':
[('A', 0)]}), (['B', 'Input'], {'direction': [('Input', 1)], 'name':
[('B', 0)]}), (['Y', 'Output'], {'direction': [('Output', 1)], 'name':
[('Y', 0)]}), (['VDD', 'Inout', 'Power'], {'direction': [('Inout',
1)], 'name': [('VDD', 0)], 'signal': [('Power', 2)]}), (['VSS',
'Inout', 'Ground'], {'direction': [('Inout', 1)], 'name': [('VSS',
0)], 'signal': [('Ground', 2)]})], {}), 'name': 'AND2X1', 'library':
'stdcell130'}
As you can see the Pins is all jacked up and I want is not that. *I
want the following
{ 'name': 'AND2X1',
* 'library':'stdcell130'
* 'pins': [ { 'name': 'VSS', 'direction':'Inout', 'signal':'Ground'},
* * * * * * *{ 'name': 'VDD', 'direction':'Inout', 'signal':'Power'},
* * * * * * *{ 'name': 'A', 'direction':'Input' },
* * * * * * *{ 'name': 'B', 'direction':'Input' },
* * * * * * *{ 'name': 'Y', 'direction':'Output' } ]
}
What did I do wrong in my code..
Not a thing! asDict() is just not very good at dumping out lists of
subdicts. Look at the output when you iterate over the cells in x,
and the pins in each cell:
for cell in x:
print "Name:", cell["name"]
print "Library:", cell["library"]
print "Pins:"
for pin in cell["pins"]:
print pin.asDict()
print
Prints:
Name: AND2X1
Library: stdcell130
Pins:
{'direction': 'Input', 'name': 'A'}
{'direction': 'Input', 'name': 'B'}
{'direction': 'Output', 'name': 'Y'}
{'direction': 'Inout', 'name': 'VDD', 'signal': 'Power'}
{'direction': 'Inout', 'name': 'VSS', 'signal': 'Ground'}
Name: AND2X2
Library: stdcell130
Pins:
{'direction': 'Input', 'name': 'A'}
{'direction': 'Input', 'name': 'B'}
{'direction': 'Output', 'name': 'Y'}
{'direction': 'Inout', 'name': 'VDD', 'signal': 'Power'}
{'direction': 'Inout', 'name': 'VSS', 'signal': 'Ground'}
Now, here is a real trick. Each pin has a unique name, and the
collection of pins can be used to define a dict using the pin names as
dynamically-defined keys. You've laid all the ground work, all that
is needed is to define your sequence of OneOrMore(guts) as a dict
using the guts names as keys. The only change needed is to wrap this
OneOrMore(guts) in a pyparsing Dict class - that is, change:
OneOrMore(guts).setResultsName("pins")
to:
Dict(OneOrMore(guts)).setResultsName("pins")
Now, if you iterate over each cell, you can dump out its structure:
for cell in x:
print cell.dump()
print
Prints:
['stdcell130', 'AND2X1', [['A', 'Input'], ['B', 'Input'], ['Y',
'Output'], ['VDD', 'Inout', 'Power'], ['VSS', 'Inout', 'Ground']]]
- library: stdcell130
- name: AND2X1
- pins: [['A', 'Input'], ['B', 'Input'], ['Y', 'Output'], ['VDD',
'Inout', 'Power'], ['VSS', 'Inout', 'Ground']]
- A: Input
- B: Input
- VDD: ['Inout', 'Power']
- direction: Inout
- name: VDD
- signal: Power
- VSS: ['Inout', 'Ground']
- direction: Inout
- name: VSS
- signal: Ground
- Y: Output
['stdcell130', 'AND2X2', [['A', 'Input'], ['B', 'Input'], ['Y',
'Output'], ['VDD', 'Inout', 'Power'], ['VSS', 'Inout', 'Ground']]]
- library: stdcell130
- name: AND2X2
- pins: [['A', 'Input'], ['B', 'Input'], ['Y', 'Output'], ['VDD',
'Inout', 'Power'], ['VSS', 'Inout', 'Ground']]
- A: Input
- B: Input
- VDD: ['Inout', 'Power']
- direction: Inout
- name: VDD
- signal: Power
- VSS: ['Inout', 'Ground']
- direction: Inout
- name: VSS
- signal: Ground
- Y: Output
To flesh out all fields of all pins, I suggest you add a default value
for the optional signal entry, and set the results name on the
Optional wrapper, not the quoted string. Change:
+
Optional(quotedString.setParseAction(removeQuotes) .setResultsName("signal"))
to:
+
Optional(quotedString.setParseAction(removeQuotes) ,default="").setResultsName("signal")
Now dump() called on each cell prints out:
['stdcell130', 'AND2X1', [['A', 'Input', ''], ['B', 'Input', ''],
['Y', 'Output', ''], ['VDD', 'Inout', 'Power'], ['VSS', 'Inout',
'Ground']]]
- library: stdcell130
- name: AND2X1
- pins: [['A', 'Input', ''], ['B', 'Input', ''], ['Y', 'Output', ''],
['VDD', 'Inout', 'Power'], ['VSS', 'Inout', 'Ground']]
- A: ['Input', '']
- direction: Input
- name: A
- signal:
- B: ['Input', '']
- direction: Input
- name: B
- signal:
- VDD: ['Inout', 'Power']
- direction: Inout
- name: VDD
- signal: Power
- VSS: ['Inout', 'Ground']
- direction: Inout
- name: VSS
- signal: Ground
- Y: ['Output', '']
- direction: Output
- name: Y
- signal:
Power
Input
['stdcell130', 'AND2X2', [['A', 'Input', ''], ['B', 'Input', ''],
['Y', 'Output', ''], ['VDD', 'Inout', 'Power'], ['VSS', 'Inout',
'Ground']]]
- library: stdcell130
- name: AND2X2
- pins: [['A', 'Input', ''], ['B', 'Input', ''], ['Y', 'Output', ''],
['VDD', 'Inout', 'Power'], ['VSS', 'Inout', 'Ground']]
- A: ['Input', '']
- direction: Input
- name: A
- signal:
- B: ['Input', '']
- direction: Input
- name: B
- signal:
- VDD: ['Inout', 'Power']
- direction: Inout
- name: VDD
- signal: Power
- VSS: ['Inout', 'Ground']
- direction: Inout
- name: VSS
- signal: Ground
- Y: ['Output', '']
- direction: Output
- name: Y
- signal:
You can use the nested names shown in the dump to access individual
bits of the parsed results:
for cell in x:
print cell.name
print cell.pins.keys()
print cell.pins.VDD.signal
print cell.pins.A.direction
print
prints:
AND2X1
['A', 'Y', 'B', 'VDD', 'VSS']
Power
Input
AND2X2
['A', 'Y', 'B', 'VDD', 'VSS']
Power
Input
-- Paul
