Getting port defnitions from pyslang.ModportSymbol

[Abhinkop]

Hello,

I am trying to get the port direction and name from the modeport node in the AST for interfaces. I have a tree-walker method which walks the AST some thing like this.

def walker(node):
    switch(node):
    ...
    ...
        case pyslang.ModportSymbol:
            #print all ports in modport defnition and modport name. 
            # or make a recursive call with child nodes for further walking.
    ...
    ...

I am not able to find any children which would help me further navigate down the tree to get the ports.

for example:
input.sv

interface simple_interface(input clk);
  logic enable;
  logic [7:0] data;

  initial enable <=0;
  initial data <=0;  
  
  modport master (
    input clk,
    output data,
    output enable
  );

  modport slave (
    input clk,
    input data,
    input enable
  );
endinterface

Once I parse this file I want the output to be like something:

master clk input
master data output
master enable output
slave clk input
slave data input
slave enable input

Any pointers on this would be helpful?

[MikePopoloski]

The modport has child nodes of type ModportPortSymbol which has all the information you want.

[Abhinkop]

Great. That works. Is there documentation available for the python bindings somewhere since I googled and I was only able to find this https://pypi.org/project/pyslang/ and this redirects to c++ documentation.

[MikePopoloski]

No, there is only the C++ documentation. You can cross reference with the Python bindings (here for example: https://github.com/MikePopoloski/slang/blob/master/bindings/python/SymbolBindings.cpp ) which show what is exposed to Python.