etherlab/entries_list.ysl2
author Edouard Tisserant
Tue, 25 Aug 2020 14:32:39 +0200
branchsvghmi
changeset 3036 4930455428df
parent 2641 c9deff128c37
permissions -rw-r--r--
SVGHMI: JsonTable now use intermediate variables again to address JSON data without duplicating code or referencing. Using intermediate variables also alows to check for availability of data and stop evaluating early if data is missing. Finally added complete roundtrip example to illustrate use of JSonTable to display "alarms" collected in python from changes on PLC boolean variables.
/*

Stylesheet used to list EtherCat dictionnary entries.

Copyright (C) 2011-2014: Laurent BESSARD

Distributed under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

See COPYING file for copyrights details.

*/

include yslt.yml2
estylesheet xmlns:ns="entries_list_ns" 
            extension-element-prefixes="ns" 
            exclude-result-prefixes="ns" {
    
    param "min_index";
    param "max_index";
    
    template "text()";
    
    template "Device" {
        apply "Profile/Dictionary/Objects/Object";
        foreach "RxPdo" {
            call "pdo_entries" with "direction", "'Receive'";
        }
        foreach "TxPdo" {
            call "pdo_entries" with "direction", "'Transmit'";
        }
    }
    
    template "Object" {
        variable "index" > «ns:HexDecValue(Index/text())»
        variable "entry_name" > «ns:EntryName(Name)»
        choose {
            when "$index >= $min_index and $index <= $max_index" {
                variable "datatype_name" > «Type/text()»
                variable "default_value" > «Info/DefaultData/text()»
                choose {
                    when "ancestor::Dictionary/child::DataTypes/DataType[Name/text()=$datatype_name][SubItem]" {
                        apply "ancestor::Dictionary/child::DataTypes/DataType[Name/text()=$datatype_name][SubItem]" {
                            with "index" > «$index»
                            with "entry_name" > «$entry_name»
                            with "sub_default_value" > «Info/SubItem/Info/DefaultData/text()»
                        }
                    }
                    otherwise {
                        variable "subindex" > 0
                        variable "sub_entry_flag" > 0
                        variable "entry" {
                            > «ns:AddEntry($index, $subindex, $entry_name, $datatype_name, BitSize/text(), Flags/Access/text(), Flags/PdoMapping/text(), $default_value, $sub_entry_flag)»
                        }
                    }
                }
            }
        }
    }
    
    template "DataType" {
        param "index";
        param "entry_name";
        param "sub_default_value"
        foreach "SubItem" {
            variable "subindex" > «ns:HexDecValue(SubIdx/text())»
            variable "subentry_name" > «$entry_name» - «ns:EntryName(DisplayName, Name/text())»
            variable "sub_entry_flag" > 1
            variable "entry" {
                > «ns:AddEntry($index, $subindex, $subentry_name, Type/text(), BitSize/text(), Flags/Access/text(), Flags/PdoMapping/text(), $sub_default_value, $sub_entry_flag)»
            }
        }
    }
    
    function "pdo_entries" {
        param "direction";
        variable "pdo_index" > «ns:HexDecValue(Index/text())»
        variable "pdo_name" > «ns:EntryName(Name)»
        foreach "Entry" {
            variable "index" > «ns:HexDecValue(Index/text())»
            choose {
                when "$index >= $min_index and $index <= $max_index" {
                    variable "subindex" > «ns:HexDecValue(SubIndex/text())»
                    variable "subentry_name" > «ns:EntryName(Name)»
                    variable "access" {
                        choose {
                            when "$direction='Transmit'" > ro
                            otherwise > wo
                        }
                    }
                    variable "pdo_mapping" {
                        choose {
                            when "$direction='Transmit'" > T
                            otherwise > R
                        }
                    }
                    variable "entry" {
                        > «ns:AddEntry($index, $subindex, $subentry_name, DataType/text(), BitLen/text(), $access, $pdo_mapping, $pdo_index, $pdo_name, $direction)»
                    }
                }
            }
        }
    }
}