crash in your test case

[dengzailin]

Hi
I meet a coredump in your case

main spice_files/mux_2_1.sp

SPICE STD-CELL TIMING ARCS EXTRACTOR
[UNDER DEVELOPMENT]

Subcircuit:sky130_fd_sc_hs__mux2_1

Inputs & Outputs

input:A0
input:A1
input:S
output:X

PUN Expressions:
X=a_304_74#
a_27_112#=S
a_304_74#=((A1+a_27_112#)*(S+A0))

PDN Expressions:
X=a_304_74#
a_27_112#=S
a_304_74#=((a_27_112#A0)+(A1S))
terminate called after throwing an instance of 'std::out_of_range'
what(): vector::_M_range_check: __n (which is 2) >= this->size() (which is 2)
Abort (core dumped)

I find your function flatten_expression have some bug

[dengzailin]

my test case as below

.subckt MUX2ND1BWP16P90CPD I0 I1 S ZN VDD VSS VPP VBB
XMDMY0 net47 net47 net47 VPP pch_svt_mac L=0.016u nfin=2 as=2.146e-15
XMDMY2 net51 net51 net51 VPP pch_svt_mac L=0.016u nfin=2 as=2.146e-15
XMDMY3 net51 net51 net51 VBB nch_svt_mac L=0.016u nfin=2 as=2.146e-15
XMDMY4 net47 net47 net47 VBB nch_svt_mac L=0.016u nfin=2 as=2.146e-15
XMM1 net47 I0 VDD VPP pch_svt_mac L=0.016u nfin=4 as=5.698e-15
XMM10 ZN net061 VDD VPP pch_svt_mac L=0.016u nfin=4 as=1.1088e-14
XMM11 ZN net061 VSS VBB nch_svt_mac
XMM12 net51 I1 VDD VPP pch_svt_mac L=0.016u nfin=4
XMM13 net51 I1 VSS VBB nch_svt_mac L=0.016u nfin=4
XMM14 net51 S tgo VBB nch_svt_mac L=0.016u nfin=2 as=2.146e-15
XMM15 net51 net39 tgo VPP pch_svt_mac L=0.016u nfin=2 as=2.146e-15
XMM16 net47 S tgo VPP pch_svt_mac L=0.016u nfin=2
XMM17 net47 net39 tgo VBB nch_svt_mac L=0.016u nfin=2
XMM5 net47 I0 VSS VBB nch_svt_mac L=0.016u nfin=4 as=5.698e-15
XMM6 net39 S VDD VP pch_svt_mac L=0.016u nfin=4
XMM7 net39 S VSS VBB nch_svt_mac L=0.016u nfin=4
XMM8 net061 tgo VSS VBB nch_svt_mac L=0.016u nfin=4 as=5.698e-15
XMM9 net061 tgo VDD VPP pch_svt_mac L=0.016u nfin=4 as=5.698e-15
.ends

Inputs & Outputs

input:I0
input:I1
input:S
output:ZN

PUN Expressions:
ZN=net061
net061=tgo
net39=S
net47=S
net51=(net47+I0)
tgo=S
net47=(net39+(net51+I1))

PDN Expressions:
ZN=net061
net061=tgo
net39=S
net47=I0
net51=(net47net39)
tgo=(net47net39)
net47=(S*(net51*I1))
terminate called after throwing an instance of 'std::out_of_range'
what(): vector::_M_range_check: __n (which is 2) >= this->size() (which is 2)
Abort (core dumped)

[rodrigowue]

Dear dengzailin,

Thanks for reporting the crash. I redid the code in python with a bunch of improvements. So this one is deprecated and I will signalize that. The new version I will release today in another repository "github.com/rodrigowue/pyLEX". I will just run some tests before releasing.

Sorry for the current lack of functionality. I hope the new version will satisfy your need.

Thanks!
Rodrigo

[dengzailin]

Oh , thanks reply me , I hope you can fix this c++ program ， I am learning how it works