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###############################################################################
# Copyright (c) 2020-2024 by Altair Engineering, Inc.
# All rights reserved.
#
# Altair Engineering, Inc. makes this software available as part of the Vision
# tool platform.  As long as you are a licensee of the Vision tool platform
# you may make copies of the software and modify it to be used within the
# Vision tool platform, but you must include all of this notice on any copy.
# Redistribution without written permission to any third party, with or
# without modification, is not permitted.
# Altair Engineering, Inc. does not warrant that this software is error free
# or fit for any purpose.  Altair Engineering, Inc. disclaims any liability for
# all claims, expenses, losses, damages and costs any user may incur as a
# result of using, copying or modifying the software.
# =============================================================================
#   @userware
#       Report All Instance Parameters
#   @section
#       Create Reports
#   @description
#       Example Tcl script that uses ZDB API commands to extract all
#       instance parameters (default and non-default) and print a report to an
#       output file.
#       The script may get confused by "(* ... *)"-style Verilog attributes and
#       parameters with the same name as internal Vision attributes.
#
#       Usage:
#         starsh reportAllInstanceParameters.tcl design.zdb report.txt
#   @files
#       cust33/reportAllInstanceParameters.tcl
#   @tag
#       zdb batch report rtl
###############################################################################


namespace eval ReportAllInstanceParameters {
}


# =============================================================================
# Main - Report parameterized instances with their default and non-default
#        parameters.
# =============================================================================
#
proc ReportAllInstanceParameters::Main {argc argv} {
    ##
    # Check for 2 command line options
    #
    if {$argc != 2} {
        set    msg "Wrong number of args. Usage:\n"
        append msg "[info nameofexecutable] [info script]"
        append msg " <BINFILE> <REPORTFILE>"
        error  $msg
    }

    ##
    # The design is given as the first argument on the command line.
    #
    set binfile [lindex $argv 0]

    ##
    # The report file is the second argument on the command line.
    #
    set report [lindex $argv 1]

    ##
    # Open the binfile.
    #
    set db [zdb open $binfile]

    ##
    # Open the report file.
    #
    set channel [open $report "w"]

    ##
    # Create instance parameters report.
    #
    createReport $db $channel

    ##
    # Close the report file.
    #
    close $channel

    ##
    # Close the opened database.
    #
    $db close
}


# -----------------------------------------------------------------------------
# createReport - Traverse the db and dump the parameters report into $channel.
# -----------------------------------------------------------------------------
#
proc ReportAllInstanceParameters::createReport {db channel} {
    ##
    # Collect all cell parameters.
    # Mark all parameterized cells with $flag.
    # Clear flags first.
    #
    set flag "red"
    $db flag -db clear $flag

    set cellParameters [dict create]
    $db foreach cell cell {
        set parameters [getAllParameters $db $cell]
        if {[dict size $parameters] > 0} {
            ##
            # Mark the cell with $flag.
            #
            $db flag $cell set $flag

            ##
            # Collect parameters.
            #
            dict set cellParameters [$db oid oname $cell] $parameters
        }
    }

    ##
    # No parameterized cells found.
    #
    if {[dict size $cellParameters] == 0} {
        puts $channel "No parameterized modules found in the design."

        return
    }

    ##
    # Get the top design.
    #
    set top [$db get_top_design]

    ##
    # Find all instances of marked cells.
    #
    $db flat foreach instOfCell $flag $top instance {
        ##
        # Print the instance's path.
        #
        puts $channel [$db oid print $instance -notype]

        ##
        # Determine the instantiated cell.
        #
        set cell     [$db oid down $instance]
        set cellName [$db oid oname $cell]

        ##
        # Print the original cell name.
        #
        set rtlName [$db attr $cell getValue "RTL_Name"]
        if {$rtlName != {}} {
            puts $channel "\tcell: $rtlName"
        } else {
            puts $channel "\tcell: $cellName"
        }

        ##
        # Parse the cell name (which contains non-default parameters!).
        #
        set ok 1
        set nonDefaultParameters [getNameParameters $cellName ok]
        if {!$ok} {
            puts $channel "\tWARNING: Syntax errors when parsing parameters\
                from cell name $cellName"
            puts $channel "\tWARNING: -> reported parameters may be wrong"
        }

        ##
        # Print parameters.
        #
        set allParameters [dict get $cellParameters $cellName]
        dict for {key value} $allParameters {
            if {![dict exists $nonDefaultParameters $key]} {
                puts $channel "\t$key = $value (default)"
            } else {
                puts $channel "\t$key = $value"
            }
        }

        ##
        # Print parameters only found at the instance, but not at the cell.
        #
        dict for {key value} $nonDefaultParameters {
            if {![dict exists $allParameters $key]} {
                puts $channel "\t$key = $value (instance-only parameter)"
            }
        }
    }
}


# -----------------------------------------------------------------------------
# getAllParameters - Get attributes from $oid and extract parameters.
# -----------------------------------------------------------------------------
#
proc ReportAllInstanceParameters::getAllParameters {db oid} {
    set parameters [dict create]
    $db attr $oid foreach attribute {
        lassign [splitKeyValue $attribute] key value
        switch -glob -- $key {
            "!*" -
            "@*" -
            "BLOCKING" -
            "ORIGINAL_PRIMITIVE_FUNCTION" -
            "PROCESS_ID" -
            "RAM_RANGE" -
            "RTL_Name" -
            "SHARED_VARIABLE" -
            "clock" -
            "strength0" -
            "strength1" {
                ##
                # internal, non-parameter attribute => skip
                #
            }
            default {
                dict set parameters $key $value
            }
        }
    }
    return $parameters
}


# -----------------------------------------------------------------------------
# splitKeyValue - Split key=value into {key value}.
# -----------------------------------------------------------------------------
#
proc ReportAllInstanceParameters::splitKeyValue {attribute} {
    set attribute [string trim $attribute]
    set position  [string first "=" $attribute]
    if {$position < 0} {
        return [list $attribute ""]
    }
    if {$position == 0} {
        return [list "" [string range $attribute 1 end]]
    }

    set key   [string range $attribute 0 [expr {$position - 1}]]
    set value [string range $attribute [expr {$position + 1}] end]
    return [list $key $value]
}


# -----------------------------------------------------------------------------
# getNameParameters - Parse parameters from $name.
# -----------------------------------------------------------------------------
#
proc ReportAllInstanceParameters::getNameParameters {name okRef} {
    upvar 1 $okRef ok

    set ok         1
    set parameters [dict create]

    if {![regexp {^([^\(\)]*)\((.*)\)([^\(\)])*$} $name -> prefix s suffix]} {
        return $parameters
    }

    set parameter  ""
    set parens     0
    foreach c [split $s ""] {
        switch -exact -- $c {
            "(" {
                incr parens
                append parameter $c
            }
            ")" {
                incr parens -1
                append parameter $c
                if {$parens < 0} {
                    set ok 0
                }
            }
            "," {
                if {$parens == 0} {
                    dict set parameters {*}[splitKeyValue $parameter]
                    set parameter ""
                } else {
                    append parameter $c
                }
            }
            default {
                append parameter $c
            }
        }
    }

    if {$parameter ne ""} {
        dict set parameters {*}[splitKeyValue $parameter]
    }

    if {$parens != 0} {
        set ok 0
    }

    return $parameters
}


##
# Run the script with the provided command-line parameters.
#
ReportAllInstanceParameters::Main $argc $argv