A quick and dirty parser for an even dirtier language. YAL is the language used to describe the MCNC benchmark netlist circuits. See the YAL documentation for further details.
pyparsingpyaml
The example/example.yal is taken from the
YAL documentation.
Module:
import yal modules = yal.read('./example/example.yal')
See the API documentation for more information.
CLI:
$ yal2yaml ./example/example.yal > ./exmaple/example.yaml
$ cat ./example/example.yal | yal2yaml > ./example/example.yaml
If the the set of *.yal files comprising the MCNC data set are in a folder
called mcnc they can be converted to *.yaml like so:
for y in ./mcnc/*.yal; do yal2yaml $y > "${y%.yal}.yaml"; done
From git with pip:
$ pip install git+https://github.com/augustunderground/pyal.git
From source with pip:
$ git clone https://github.com/augustunderground/pyal.git
$ cd pyal
$ pip install . --use-feature=in-tree-build
Due to the conflicting defintions of the YAL grammar a slightly revised version is used here:
modulename ::= [a-zA-Z0-9_]+ ;
moduletype ::= "STANDARD" | "PAD" | "GENERAL" | "PARENT" | "FEEDTHROUGH" ;
width ::= [0-9]+ ;
height ::= [0-9]+ ;
signalname ::= [a-zA-Z0-9_]+ ;
terminaltype ::= "I" | "O" | "B" | "PI" | "PO" | "PB" | "F" | "PWR" | "GND" ;
side ::= "BOTTOM" | "RIGHT" | "TOP" | "LEFT" ;
layer ::= "PDIFF" | "NDIFF" | "POLY" | "METAL1" | "METAL2" ;
xposition ::= -?[0-9]+ ;
yposition ::= -?[0-9]+ ;
position ::= -?[0-9]+ ;
instancename ::= [a-zA-Z0-9_]+ ;
xlocation ::= -?[0-9]+ ;
ylocation ::= -?[0-9]+ ;
current ::= -?[0-9]+(\.[0-9]+)? ;
voltage ::= -?[0-9]+(\.[0-9]+)? ;
maximumlength ::= [0-9]+ ;
reflection ::= "RFLNONE" | "RFLY" ;
rotation ::= "ROT0" | "ROT90" | "ROT180" | "ROT270" ;
dimension ::= x y ;
dimensions ::= dimension+ ;
x ::= -?[0-9]+ ;
y ::= -?[0-9]+ ;
io ::= signalname terminaltype ( xposition yposition [ width layer ]
| side position [ width layer ] )
[ "CURRENT" current ] [ "VOLTAGE" voltage ] ;
ios ::= (io ';')+ ;
network ::= instancename modulename signalname (net+) ;
networks ::= (network ';')+ ;
net ::= [a-zA-Z0-9_]+ ;
placement ::= instancename xlocation ylocation [reflection] [rotation] ;
placements ::= (placement ';')+ ;
critnet ::= signalname maximumlength ;
critnets ::= (critnet ';')+ ;
module ::= 'MODULE' modulename ';'
'TYPE' moduletype ';'
'DIMENSIONS' dimensions ';'
'IOLIST;'
ios
'ENDIOLIST;'
'NETWORK'
networks
'ENDNETWORK;'
['PLACEMENT'
placements
'ENDPLACEMENT;']
['CRITICALNETS;'
critnets
'ENDCRITICALNETS;']
'ENDMODULE;' ;