class HDLRuby::High::Std::ChannelPortA

Describes an access port to a channel.

Public Class Methods

new(namespace,reader_proc,writer_proc,reseter_proc = nil) click to toggle source

Creates a new channel accesser running in namespace and reading using reader_proc, writing using writer_proc, and reseting using reseter_proc.

# File lib/HDLRuby/std/channel.rb, line 205
def initialize(namespace,reader_proc,writer_proc,reseter_proc = nil)
    unless namespace.is_a?(Namespace)
        raise "Invalid class for a namespace: #{namespace.class}"
    end
    @namespace = namespace
    unless reader_proc || writer_proc then
        raise "An accesser must have at least a reading or a writing procedure."
    end
    @reader_proc  = reader_proc ? reader_proc.to_proc : proc { }
    @writer_proc  = writer_proc ? writer_proc.to_proc : proc { }
    @reseter_proc = reseter_proc ? reseter_proc.to_proc : proc {}
    @scope = HDLRuby::High.cur_scope
end

Public Instance Methods

read(*args,&ruby_block) click to toggle source

Performs a read on the channel using args and ruby_block as arguments.

# File lib/HDLRuby/std/channel.rb, line 221
def read(*args,&ruby_block)
    # Gain access to the accesser as local variable.
    reader_proc = @reader_proc
    # Execute the code generating the accesser in context.
    HDLRuby::High.space_push(@namespace)
    HDLRuby::High.cur_block.open do
        instance_exec(ruby_block,*args,&reader_proc)
    end
    HDLRuby::High.space_pop
end
reset(*args,&ruby_block) click to toggle source

Performs a reset on the channel using args and ruby_block as arguments.

# File lib/HDLRuby/std/channel.rb, line 247
def reset(*args,&ruby_block)
    # Gain access to the accesser as local variable.
    reseter_proc = @reseter_proc
    # Execute the code generating the accesser in context.
    HDLRuby::High.space_push(@namespace)
    HDLRuby::High.cur_block.open do
        instance_exec(ruby_block,*args,&reseter_proc)
    end
    HDLRuby::High.space_pop
end
write(*args,&ruby_block) click to toggle source

Performs a write on the channel using args and ruby_block as arguments.

# File lib/HDLRuby/std/channel.rb, line 234
def write(*args,&ruby_block)
    # Gain access to the accesser as local variable.
    writer_proc = @writer_proc
    # Execute the code generating the accesser in context.
    HDLRuby::High.space_push(@namespace)
    HDLRuby::High.cur_block.open do
        instance_exec(ruby_block,*args,&writer_proc)
    end
    HDLRuby::High.space_pop
end