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###############################################################
#
#  File:      component.rb
#
#  Author:    Christian Hättich
#
#  Project:   System-On-Chip Maker
#
#  Target:    Linux / Windows / Mac
#
#  Language:  ruby
#
#
###############################################################
#
#
#   Copyright (C) 2014  Christian Hättich  - feddischson [ at ] opencores.org
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see .
#
#
###############################################################
#
#   Description:
########
#
# TODO
#
#
###############################################################
 
 
 
module SOCMaker
 
 
 
######
#
# This class represents an abstract component.
# It is one of the central classes and holds data,
# which is used to describe a core or System-On-Chip (SOC).
#
#
class Component
  include ERR
  include YAML_EXT
 
 
  # name of the core  (mandatory)
  attr_accessor :name
 
  # version of the core  (mandatory)
  attr_accessor :version
 
  # toplevel name (mandatory)
  attr_accessor :toplevel
 
  # description of this core
  attr_accessor :description
 
  # creation date
  attr_accessor :date
 
  # license of this core
  attr_accessor :license
 
  # location of the license file
  attr_accessor :licensefile
 
  # author of this core
  attr_accessor :author
 
  # author-mail of this core
  attr_accessor :authormail
 
  # a version control command, which is used to download the files
  attr_accessor :vccmd
 
  # interfaces which are implemented see SOCMaker::IfcSpc
  attr_accessor :interfaces
 
  attr_accessor :functions
 
  # hash of instantiation parameters see SOCMaker::Parameter
  attr_accessor :inst_parameters
 
  # hash of static parameters see SOCMaker::SParameter
  attr_accessor :static_parameters
 
 
  #
  # Constructor
  # The three attributes are required, and all other attributes
  # can be given as a optinal hash
  #
  # *name*:: Name of this component
  # *version*:: Version of this component
  # *toplevel*:: Toplevel name of this component
  # *optional*:: Non-mandatory values, which can be set during initialization.
  #
  #
  def initialize( name, version, toplevel, optional = {} )
    init_with( { 'name'      => name,
                 'version'   => version,
                 'toplevel'  => toplevel }.merge( optional ) )
  end
 
  #
  # Encoder function (to yaml)
  #
  # +coder+:: An instance of the Psych::Coder to encode this class to a YAML file
  #
  def encode_with( coder )
    %w[ name version description date license licensefile
        author authormail vccmd toplevel interfaces
        functions inst_parameters static_parameters ].
          each { |v| coder[ v ] = instance_variable_get "@#{v}" }
  end
 
  #
  # Initialization function (from yaml)
  #
  # +coder+:: An instance of the Psych::Coder to init this class from a YAML file
  #
  #
  def init_with( coder )
 
    serr_if( coder[ 'name' ] == nil,
      'Name not defined',
      field:    'name'    )
    @name = coder[ 'name' ]
    verr_if( !@name.is_a?( String ),
      'The name must be of type string',
      field:    'name'         )
    serr_if( @name.size  == 0,
      'Name not defined (size == 0)',
      field:    'name'    )
    verr_if( !!SOCMaker::conf[ :name_regex ].match( @name ) == false,
         'The core name is invalid',
        instance: @name,
        field:    'name' )
 
    serr_if( coder[ 'version' ] == nil,
      'Version not defined',
      instance: @name,
      field:    'version' )
    @version = coder[ 'version' ]
    serr_if( @version.size == 0,
      'Version not defined (size == 0)',
      instance: @name,
      field:    'version' )
 
    # cast from numeric to string, if not given as string
    @version = @version.to_s if @version.is_a? ( Numeric )
    verr_if( !@version.is_a?( String ),
      'The name must be of type string or numeric',
      field:    'name'         )
 
 
 
    serr_if( coder[ 'toplevel' ] == nil,
      'Toplevel not defined',
      instance: @name,
      field:    'toplevel' )
    @toplevel = coder[ 'toplevel' ]
    verr_if( !@toplevel.is_a?( String ),
      "toplevel must be of type string",
      instance: @name,
      field:    "toplevel" )
    serr_if( @toplevel.size  == 0,
      'Toplevel not defined (size == 0 )',
      instance: @name,
      field:    'toplevel' )
 
 
 
 
    # set non-nil values
    #  -> we don't need to check for nil in the rest of the
    #     processing
    @description       = coder[ 'description'       ] || ""
    @date              = coder[ 'date'              ] || ""
    @license           = coder[ 'license'           ] || ""
    @licensefile       = coder[ 'licensefile'       ] || ""
    @author            = coder[ 'author'            ] || ""
    @authormail        = coder[ 'authormail'        ] || ""
    @vccmd             = coder[ 'vccmd'             ] || ""
    @interfaces        = coder[ 'interfaces'        ] || {}
    @functions         = coder[ 'functions'         ] || {}
    @inst_parameters   = coder[ 'inst_parameters'   ] || {}
    @static_parameters = coder[ 'static_parameters' ] || {}
 
 
    # ensure, that these fields are of type String
    %w[ description date license licensefile
        author authormail vccmd ].each do |n|
      verr_if( !instance_variable_get( '@'+n ).is_a?( String ),
        "#{n} must be of type String",
        instance: @name,
        field:    n )
    end
 
    # ensure, that these fields are of type Hash
    %w[ interfaces inst_parameters
        functions  static_parameters ].each do |n|
      verr_if( !instance_variable_get( '@'+n ).is_a?( Hash ),
        "#{n} must be of type Hash",
        instance: @name,
        field:    n )
    end
 
 
 
    # check interfaces
    @interfaces.each do |ifc_name, ifc|
      serr_if( ifc == nil,
            'Interface not defined',
            instance:   @name+":"+ifc_name.to_s )
 
      serr_if( !ifc.is_a?( SOCMaker::IfcDef ),
            'Interface definition is not SOCMaker::IfcDef (please use SOCM_IFC)',
            instance: @name+":"+ifc_name.to_s )
    end
 
    # check instance parameters
    @inst_parameters.each do |name, param |
      serr_if( param == nil,
            'Instance parameter not defined',
            instance:   @name+":"+name.to_s )
 
      serr_if( !param.is_a?( SOCMaker::Parameter ),
            'Instance parameter not SOCMaker::Parameter (please use SOCM_PARAM)',
            instance: @name+":"+name.to_s )
    end
 
    # check instance parameters
    @static_parameters.each do |name, sparam |
      serr_if( sparam == nil,
            'Static parameter not defined',
            instance:   @name+":"+name.to_s )
 
      serr_if( !sparam.is_a?( SOCMaker::SParameter ),
            'Static parameter not SOCMaker::Parameter (please use SOCM_SPARAM)',
            instance: @name+":"+name.to_s )
    end
 
  end
 
 
  #
  # Runs a consistency check:
  # Iterate over all interfaces and check, if the interface is
  # in the SOCMaker::Lib.
  # The function also checks also, if the ports defined by this
  # core is also defined in the interface.
  #
  def consistency_check
    @interfaces.values.each_with_index do | ifc, i_ifc; ifc_def|
 
      # get interface definition
      ifc_def = SOCMaker::lib.get_ifc( ifc.name, ifc.version )
 
 
      # check, if all mandatory ports are implemented by this interface
      ifc_def.ports.each do | port_name, port |
        perr_if( port[ :mandatory ] == true &&
                  ifc.ports.select{ |key,port_def| port_def.defn.to_sym == port_name }.size == 0,
          "Mandatory port #{port_name} is not implemented in interface #{ifc.name}" )
      end
    end
 
  end
 
 
  #
  # Runs the Version Control System command via system(....)
  #
  def update_vcs
    unless self.vccmd.nil? or @vccmd.size == 0
      #puts"cd #{@dir} && #{@vccmd}"
      system( "cd #{@dir} && #{vccmd} " )
    end
  end
 
 
 
 
 
  # Iterates over all generic values of this component
  # and yield the call block with
  # - generic name
  # - generic type
  # - generic default
  # - is-last value
  def generics
    @inst_parameters.each_with_index do |(name, val), i|
 
      _generic_name     = name.to_s
      _generic_type     = val.type
      _generic_default  = val.default
      _is_last          = i == @inst_parameters.size-1
      yield( _generic_name   ,
             _generic_type   ,
             _generic_default,
             _is_last         )
 
    end
  end
 
 
  #
  # Iterates over interface list (if no argument is given)
  # or all specified interfaces.
  # For each interface, all ports are processed.
  # For each port within each interface, we lookup the port defn
  # and yield the call block with
  # - port-name
  # - port length
  # - default value
  # - is-last value
  # as argument
  #
  # An xor mechanism between port_dir and ifc=>dir is used
  # to determine the direction of a port, for example:
  # If the interface is declared as input (1) and a port is declared as input (1)
  # the resulting direction will be an output 1^1 = 0.
  # But if the overall interface direction is an output (0) and a port is declared
  # as input, the resulting direction will an input 0^1 = 1.
  # This allows to define a port-direction in the interface definition,
  # and toggle the directions on core-definition level.
  #
  #
  # *args*:: An optional list of interface names
  def ports( *args )
 
    if args.size == 0
      @ifc_sel = @interfaces
    else
      @ifc_sel = @interfaces.select{ |k,v| args.include?( k.to_s ) }
    end
 
    @ifc_sel.values.each_with_index do | ifc, i_ifc; ifc_def|
 
      # get interface definition
      ifc_def = SOCMaker::lib.get_ifc( ifc.name, ifc.version )
 
      # loop over ports in this interface
      ifc.ports.each_with_index do |(port_name, port_def), i_port |
 
        # the reference to the port in the definition
        defn_ref      = port_def.defn.to_sym
        perr_if( !ifc_def.ports.has_key?( defn_ref ),
            "Can't find #{port_def} in" +
            "interface definition #{ifc_def.name} " +
            "version #{ifc_def.version}" )
 
        _port_name    = port_name.to_s
        _port_dir     = ifc_def.ports[ defn_ref ][:dir] ^ ifc.dir
        _port_length  = port_def.len
        _port_default = ifc_def.ports[ defn_ref ][ :default  ]
        _is_last      = ( (i_port == ifc.ports.size-1 ) and (i_ifc == @ifc_sel.size-1 ) )
        yield(  _port_name, _port_dir, _port_length, _port_default, _is_last )
      end
    end
  end
 
 
 
  #
  # Equality operator
  #
  def ==(o)
 
    tmp    = ( o.class   == self.class )
    return tmp if !tmp
 
    %w[ name version description date license licensefile
        author authormail vccmd toplevel interfaces
        functions inst_parameters static_parameters ].
          each do |v|
      return false if instance_variable_get( "@#{v}" ) != o.instance_variable_get( "@#{v}" )
    end
    return true
  end
 
  #
  # Returns a string describing this instance
  #
  def to_s
    "version:           #{@version}\n"              +
    "toplevel:          #{@toplevel}\n"             +
    "description:       #{@description}\n"          +
    "date:              #{@date}\n"                 +
    "license:           #{@license}\n"              +
    "licensefile:       #{@licensefile}\n"          +
    "author:            #{@author}\n"               +
    "authormail:        #{@authormail}\n"           +
    "vccmd:             #{@vccmd}\n"                +
    "interfaces:        #{@interfaces}\n"           +
    "functions:         #{@functions}\n"            +
    "inst_parameters:   #{@inst_parameters}\n"      +
    "static_parameters: #{@static_parameters}\n"
  end
 
 
 
 
 
  #
  # Creates a core directory, if it doesn't exist.
  # The path of the target directoy depends
  # on SOCMaker::conf[ :build_dir ] and
  # on SOCMaker::conf[ :hdl_dir ].
  # The resulting path is
  # ./#{SOCMaker::conf[ :build_dir ]}/#{SOCMaker::conf[ :hdl_dir ]}/dir_name
  #
  # *dir_name*:: Name of the target directory
  #
  def self.get_and_ensure_dst_dir!( dir_name )
      dst_dir =  File.expand_path(
            File.join(
              SOCMaker::conf[ :build_dir ],
              SOCMaker::conf[ :hdl_dir   ],
              dir_name ) )
      FileUtils.mkdir_p dst_dir
      return dst_dir
  end
 
 
 
 
 
 
 
end # class CoreDef
end # module SOCMaker
 
 
# vim: noai:ts=2:sw=2
 
# vim: noai:ts=2:sw=2

Line No.	Rev	Author	Line
1	3	feddischso	`###############################################################`
2			`#`
3			`# File: component.rb`
4			`#`
5			`# Author: Christian Hättich`
6			`#`
7			`# Project: System-On-Chip Maker`
8			`#`
9			`# Target: Linux / Windows / Mac`
10			`#`
11			`# Language: ruby`
12			`#`
13			`#`
14			`###############################################################`
15			`#`
16			`#`
17			`# Copyright (C) 2014 Christian Hättich - feddischson [ at ] opencores.org`
18			`#`
19			`# This program is free software: you can redistribute it and/or modify`
20			`# it under the terms of the GNU General Public License as published by`
21			`# the Free Software Foundation, either version 3 of the License, or`
22			`# (at your option) any later version.`
23			`#`
24			`# This program is distributed in the hope that it will be useful,`
25			`# but WITHOUT ANY WARRANTY; without even the implied warranty of`
26			`# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
27			`# GNU General Public License for more details.`
28			`#`
29			`# You should have received a copy of the GNU General Public License`
30			`# along with this program. If not, see .`
31			`#`
32			`#`
33			`###############################################################`
34			`#`
35			`# Description:`
36			`########`
37			`#`
38			`# TODO`
39			`#`
40			`#`
41			`###############################################################`
42
43
44	9	feddischso
45	3	feddischso	`module SOCMaker`
46	9	feddischso
47
48
49			`######`
50			`#`
51			`# This class represents an abstract component.`
52			`# It is one of the central classes and holds data,`
53			`# which is used to describe a core or System-On-Chip (SOC).`
54			`#`
55			`#`
56	3	feddischso	`class Component`
57			`include ERR`
58			`include YAML_EXT`
59
60	9	feddischso
61			`# name of the core (mandatory)`
62	3	feddischso	`attr_accessor :name`
63	9	feddischso
64			`# version of the core (mandatory)`
65	3	feddischso	`attr_accessor :version`
66	9	feddischso
67			`# toplevel name (mandatory)`
68	3	feddischso	`attr_accessor :toplevel`
69	9	feddischso
70			`# description of this core`
71	3	feddischso	`attr_accessor :description`
72	9	feddischso
73			`# creation date`
74	3	feddischso	`attr_accessor :date`
75	9	feddischso
76			`# license of this core`
77	3	feddischso	`attr_accessor :license`
78	9	feddischso
79			`# location of the license file`
80	3	feddischso	`attr_accessor :licensefile`
81	9	feddischso
82			`# author of this core`
83	3	feddischso	`attr_accessor :author`
84	9	feddischso
85			`# author-mail of this core`
86	3	feddischso	`attr_accessor :authormail`
87	9	feddischso
88			`# a version control command, which is used to download the files`
89	3	feddischso	`attr_accessor :vccmd`
90	9	feddischso
91			`# interfaces which are implemented see SOCMaker::IfcSpc`
92	3	feddischso	`attr_accessor :interfaces`
93	9	feddischso
94	3	feddischso	`attr_accessor :functions`
95	9	feddischso
96			`# hash of instantiation parameters see SOCMaker::Parameter`
97	3	feddischso	`attr_accessor :inst_parameters`
98	9	feddischso
99			`# hash of static parameters see SOCMaker::SParameter`
100	3	feddischso	`attr_accessor :static_parameters`
101	9	feddischso
102
103			`#`
104			`# Constructor`
105			`# The three attributes are required, and all other attributes`
106			`# can be given as a optinal hash`
107			`#`
108			`# name:: Name of this component`
109			`# version:: Version of this component`
110			`# toplevel:: Toplevel name of this component`
111			`# optional:: Non-mandatory values, which can be set during initialization.`
112			`#`
113			`#`
114			`def initialize( name, version, toplevel, optional = {} )`
115	3	feddischso	`init_with( { 'name' => name,`
116			`'version' => version,`
117	9	feddischso	`'toplevel' => toplevel }.merge( optional ) )`
118	3	feddischso	`end`
119	9	feddischso
120			`#`
121			`# Encoder function (to yaml)`
122			`#`
123			`# +coder+:: An instance of the Psych::Coder to encode this class to a YAML file`
124			`#`
125	3	feddischso	`def encode_with( coder )`
126			`%w[ name version description date license licensefile`
127			`author authormail vccmd toplevel interfaces`
128			`functions inst_parameters static_parameters ].`
129			`each { \|v\| coder[ v ] = instance_variable_get "@#{v}" }`
130			`end`
131	9	feddischso
132			`#`
133			`# Initialization function (from yaml)`
134			`#`
135			`# +coder+:: An instance of the Psych::Coder to init this class from a YAML file`
136			`#`
137			`#`
138	3	feddischso	`def init_with( coder )`
139
140			`serr_if( coder[ 'name' ] == nil,`
141			`'Name not defined',`
142			`field: 'name' )`
143			`@name = coder[ 'name' ]`
144			`verr_if( !@name.is_a?( String ),`
145			`'The name must be of type string',`
146			`field: 'name' )`
147			`serr_if( @name.size == 0,`
148			`'Name not defined (size == 0)',`
149			`field: 'name' )`
150			`verr_if( !!SOCMaker::conf[ :name_regex ].match( @name ) == false,`
151			`'The core name is invalid',`
152			`instance: @name,`
153			`field: 'name' )`
154
155			`serr_if( coder[ 'version' ] == nil,`
156			`'Version not defined',`
157			`instance: @name,`
158			`field: 'version' )`
159			`@version = coder[ 'version' ]`
160			`serr_if( @version.size == 0,`
161			`'Version not defined (size == 0)',`
162			`instance: @name,`
163			`field: 'version' )`
164
165			`# cast from numeric to string, if not given as string`
166			`@version = @version.to_s if @version.is_a? ( Numeric )`
167			`verr_if( !@version.is_a?( String ),`
168			`'The name must be of type string or numeric',`
169			`field: 'name' )`
170
171
172
173			`serr_if( coder[ 'toplevel' ] == nil,`
174			`'Toplevel not defined',`
175			`instance: @name,`
176			`field: 'toplevel' )`
177			`@toplevel = coder[ 'toplevel' ]`
178			`verr_if( !@toplevel.is_a?( String ),`
179			`"toplevel must be of type string",`
180			`instance: @name,`
181			`field: "toplevel" )`
182			`serr_if( @toplevel.size == 0,`
183			`'Toplevel not defined (size == 0 )',`
184			`instance: @name,`
185			`field: 'toplevel' )`
186
187
188
189
190			`# set non-nil values`
191			`# -> we don't need to check for nil in the rest of the`
192			`# processing`
193			`@description = coder[ 'description' ] \|\| ""`
194			`@date = coder[ 'date' ] \|\| ""`
195			`@license = coder[ 'license' ] \|\| ""`
196			`@licensefile = coder[ 'licensefile' ] \|\| ""`
197			`@author = coder[ 'author' ] \|\| ""`
198			`@authormail = coder[ 'authormail' ] \|\| ""`
199			`@vccmd = coder[ 'vccmd' ] \|\| ""`
200			`@interfaces = coder[ 'interfaces' ] \|\| {}`
201			`@functions = coder[ 'functions' ] \|\| {}`
202			`@inst_parameters = coder[ 'inst_parameters' ] \|\| {}`
203			`@static_parameters = coder[ 'static_parameters' ] \|\| {}`
204
205
206			`# ensure, that these fields are of type String`
207			`%w[ description date license licensefile`
208			`author authormail vccmd ].each do \|n\|`
209			`verr_if( !instance_variable_get( '@'+n ).is_a?( String ),`
210			`"#{n} must be of type String",`
211			`instance: @name,`
212			`field: n )`
213			`end`
214
215			`# ensure, that these fields are of type Hash`
216			`%w[ interfaces inst_parameters`
217			`functions static_parameters ].each do \|n\|`
218			`verr_if( !instance_variable_get( '@'+n ).is_a?( Hash ),`
219			`"#{n} must be of type Hash",`
220			`instance: @name,`
221			`field: n )`
222			`end`
223
224
225
226			`# check interfaces`
227			`@interfaces.each do \|ifc_name, ifc\|`
228			`serr_if( ifc == nil,`
229			`'Interface not defined',`
230			`instance: @name+":"+ifc_name.to_s )`
231
232			`serr_if( !ifc.is_a?( SOCMaker::IfcDef ),`
233	7	feddischso	`'Interface definition is not SOCMaker::IfcDef (please use SOCM_IFC)',`
234	3	feddischso	`instance: @name+":"+ifc_name.to_s )`
235			`end`
236
237			`# check instance parameters`
238			`@inst_parameters.each do \|name, param \|`
239			`serr_if( param == nil,`
240			`'Instance parameter not defined',`
241			`instance: @name+":"+name.to_s )`
242
243			`serr_if( !param.is_a?( SOCMaker::Parameter ),`
244	7	feddischso	`'Instance parameter not SOCMaker::Parameter (please use SOCM_PARAM)',`
245	3	feddischso	`instance: @name+":"+name.to_s )`
246			`end`
247
248			`# check instance parameters`
249			`@static_parameters.each do \|name, sparam \|`
250			`serr_if( sparam == nil,`
251			`'Static parameter not defined',`
252			`instance: @name+":"+name.to_s )`
253
254			`serr_if( !sparam.is_a?( SOCMaker::SParameter ),`
255	7	feddischso	`'Static parameter not SOCMaker::Parameter (please use SOCM_SPARAM)',`
256	3	feddischso	`instance: @name+":"+name.to_s )`
257			`end`
258
259	7	feddischso	`end`
260	3	feddischso
261
262	9	feddischso	`#`
263			`# Runs a consistency check:`
264			`# Iterate over all interfaces and check, if the interface is`
265			`# in the SOCMaker::Lib.`
266			`# The function also checks also, if the ports defined by this`
267			`# core is also defined in the interface.`
268			`#`
269	7	feddischso	`def consistency_check`
270	8	feddischso	`@interfaces.values.each_with_index do \| ifc, i_ifc; ifc_def\|`
271
272			`# get interface definition`
273			`ifc_def = SOCMaker::lib.get_ifc( ifc.name, ifc.version )`
274	3	feddischso
275	8	feddischso
276			`# check, if all mandatory ports are implemented by this interface`
277			`ifc_def.ports.each do \| port_name, port \|`
278			`perr_if( port[ :mandatory ] == true &&`
279			`ifc.ports.select{ \|key,port_def\| port_def.defn.to_sym == port_name }.size == 0,`
280			`"Mandatory port #{port_name} is not implemented in interface #{ifc.name}" )`
281			`end`
282			`end`
283
284	3	feddischso	`end`
285
286
287	9	feddischso	`#`
288			`# Runs the Version Control System command via system(....)`
289			`#`
290			`def update_vcs`
291	5	feddischso	`unless self.vccmd.nil? or @vccmd.size == 0`
292	6	feddischso	`#puts"cd #{@dir} && #{@vccmd}"`
293	5	feddischso	`system( "cd #{@dir} && #{vccmd} " )`
294	3	feddischso	`end`
295			`end`
296
297
298
299	9	feddischso
300
301			`# Iterates over all generic values of this component`
302			`# and yield the call block with`
303			`# - generic name`
304			`# - generic type`
305			`# - generic default`
306			`# - is-last value`
307	3	feddischso	`def generics`
308			`@inst_parameters.each_with_index do \|(name, val), i\|`
309	9	feddischso
310			`_generic_name = name.to_s`
311			`_generic_type = val.type`
312			`_generic_default = val.default`
313			`_is_last = i == @inst_parameters.size-1`
314			`yield( _generic_name ,`
315			`_generic_type ,`
316			`_generic_default,`
317			`_is_last )`
318
319	3	feddischso	`end`
320			`end`
321
322
323			`#`
324	9	feddischso	`# Iterates over interface list (if no argument is given)`
325			`# or all specified interfaces.`
326	3	feddischso	`# For each interface, all ports are processed.`
327			`# For each port within each interface, we lookup the port defn`
328			`# and yield the call block with`
329	9	feddischso	`# - port-name`
330			`# - port length`
331			`# - default value`
332			`# - is-last value`
333	3	feddischso	`# as argument`
334			`#`
335	8	feddischso	`# An xor mechanism between port_dir and ifc=>dir is used`
336			`# to determine the direction of a port, for example:`
337	9	feddischso	`# If the interface is declared as input (1) and a port is declared as input (1)`
338			`# the resulting direction will be an output 1^1 = 0.`
339			`# But if the overall interface direction is an output (0) and a port is declared`
340			`# as input, the resulting direction will an input 0^1 = 1.`
341	8	feddischso	`# This allows to define a port-direction in the interface definition,`
342			`# and toggle the directions on core-definition level.`
343	3	feddischso	`#`
344			`#`
345	9	feddischso	`# args:: An optional list of interface names`
346	3	feddischso	`def ports( *args )`
347
348			`if args.size == 0`
349	9	feddischso	`@ifc_sel = @interfaces`
350			`else`
351			`@ifc_sel = @interfaces.select{ \|k,v\| args.include?( k.to_s ) }`
352			`end`
353	3	feddischso
354	9	feddischso	`@ifc_sel.values.each_with_index do \| ifc, i_ifc; ifc_def\|`
355
356			`# get interface definition`
357			`ifc_def = SOCMaker::lib.get_ifc( ifc.name, ifc.version )`
358	3	feddischso
359	9	feddischso	`# loop over ports in this interface`
360			`ifc.ports.each_with_index do \|(port_name, port_def), i_port \|`
361	3	feddischso
362	9	feddischso	`# the reference to the port in the definition`
363	8	feddischso	`defn_ref = port_def.defn.to_sym`
364			`perr_if( !ifc_def.ports.has_key?( defn_ref ),`
365	9	feddischso	`"Can't find #{port_def} in" +`
366	8	feddischso	`"interface definition #{ifc_def.name} " +`
367			`"version #{ifc_def.version}" )`
368	9	feddischso
369			`_port_name = port_name.to_s`
370			`_port_dir = ifc_def.ports[ defn_ref ][:dir] ^ ifc.dir`
371			`_port_length = port_def.len`
372			`_port_default = ifc_def.ports[ defn_ref ][ :default ]`
373			`_is_last = ( (i_port == ifc.ports.size-1 ) and (i_ifc == @ifc_sel.size-1 ) )`
374			`yield( _port_name, _port_dir, _port_length, _port_default, _is_last )`
375	3	feddischso	`end`
376			`end`
377			`end`
378
379
380	7	feddischso
381	9	feddischso	`#`
382			`# Equality operator`
383			`#`
384	3	feddischso	`def ==(o)`
385
386			`tmp = ( o.class == self.class )`
387			`return tmp if !tmp`
388
389			`%w[ name version description date license licensefile`
390			`author authormail vccmd toplevel interfaces`
391			`functions inst_parameters static_parameters ].`
392			`each do \|v\|`
393			`return false if instance_variable_get( "@#{v}" ) != o.instance_variable_get( "@#{v}" )`
394			`end`
395			`return true`
396			`end`
397
398	9	feddischso	`#`
399			`# Returns a string describing this instance`
400			`#`
401	5	feddischso	`def to_s`
402			`"version: #{@version}\n" +`
403			`"toplevel: #{@toplevel}\n" +`
404			`"description: #{@description}\n" +`
405			`"date: #{@date}\n" +`
406			`"license: #{@license}\n" +`
407			`"licensefile: #{@licensefile}\n" +`
408			`"author: #{@author}\n" +`
409			`"authormail: #{@authormail}\n" +`
410			`"vccmd: #{@vccmd}\n" +`
411			`"interfaces: #{@interfaces}\n" +`
412			`"functions: #{@functions}\n" +`
413			`"inst_parameters: #{@inst_parameters}\n" +`
414			`"static_parameters: #{@static_parameters}\n"`
415			`end`
416
417
418	9	feddischso
419
420
421			`#`
422			`# Creates a core directory, if it doesn't exist.`
423			`# The path of the target directoy depends`
424			`# on SOCMaker::conf[ :build_dir ] and`
425			`# on SOCMaker::conf[ :hdl_dir ].`
426			`# The resulting path is`
427			`# ./#{SOCMaker::conf[ :build_dir ]}/#{SOCMaker::conf[ :hdl_dir ]}/dir_name`
428			`#`
429			`# dir_name:: Name of the target directory`
430			`#`
431			`def self.get_and_ensure_dst_dir!( dir_name )`
432			`dst_dir = File.expand_path(`
433			`File.join(`
434			`SOCMaker::conf[ :build_dir ],`
435			`SOCMaker::conf[ :hdl_dir ],`
436			`dir_name ) )`
437			`FileUtils.mkdir_p dst_dir`
438			`return dst_dir`
439			`end`
440
441
442
443
444
445
446
447	3	feddischso	`end # class CoreDef`
448			`end # module SOCMaker`
449
450
451			`# vim: noai:ts=2:sw=2`
452
453	8	feddischso	`# vim: noai:ts=2:sw=2`

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