Class: Rbind::RNamespace

Inherits:
RDataType show all
Includes:
Hooks
Defined in:
lib/rbind/core/rnamespace.rb

Direct Known Subclasses

DefaultParser, RClass

Class Attribute Summary collapse

Instance Attribute Summary collapse

Attributes inherited from RDataType

#cdelete_method, #check_type, #invalid_value, #typedef

Attributes inherited from RBase

#alias, #auto_alias, #cname, #csignature, #doc, #extern_package_name, #ignore, #name, #namespace, #owner, #signature, #version

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Hooks

included

Methods inherited from RDataType

#==, #basic_type?, #check_type?, #cname, #const?, #ownership?, #ptr?, #raw?, #ref?, #remove_const, #remove_ownership, #remove_ptr, #remove_ref, #template?, #to_const, #to_ownership, #to_ptr, #to_raw, #to_ref, #to_single_ptr, #typedef?

Methods inherited from RBase

basename, #binding, #delete!, #doc?, #full_name, #generate_signatures, #ignore?, #map_to_namespace, namespace, #namespace?, normalize, #overwrite_c, #overwrite_ruby, #rename, #specialize_ruby, split_name, to_cname, #to_s

Constructor Details

#initialize(name = nil, root = nil) ⇒ RNamespace

Returns a new instance of RNamespace.



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# File 'lib/rbind/core/rnamespace.rb', line 57

def initialize(name=nil,root = nil)
    @consts = Hash.new
    @types = Hash.new
    @type_alias = Hash.new
    @operations = Hash.new{|hash,key| hash[key] = Array.new}
    @operation_alias = Hash.new{|hash,key| hash[key] = Array.new}
    @used_namespaces = Array.new
    name ||= begin
                 @root = true
                 "root"
             end
    if root
        #share varaibales accross root namesapces
        raise "#{root} is not a root namespace" unless root.root?
        @consts = root.instance_variable_get(:@consts)
        @types = root.instance_variable_get(:@types)
        @type_alias = root.instance_variable_get(:@type_alias)
        @operations = root.instance_variable_get(:@operations)
        @operation_alias =root.instance_variable_get(:@operation_alias)
        @used_namespaces = root.instance_variable_get(:@used_namespaces)
    end
    super(name)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(m, *args) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 589

def method_missing(m,*args)
    if m != :to_ary && args.empty?
        t = type(m.to_s,false,false)
        return t if t

        op = operation(m.to_s,false)
        return op if op

        c = const(m.to_s,false)
        return c if c
    end
    super
end

Class Attribute Details

.default_operator_alias ⇒ Object

Returns the value of attribute default_operator_alias.



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# File 'lib/rbind/core/rnamespace.rb', line 13

def default_operator_alias
  @default_operator_alias
end

.default_type_alias ⇒ Object

Returns the value of attribute default_type_alias.



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# File 'lib/rbind/core/rnamespace.rb', line 12

def default_type_alias
  @default_type_alias
end

.default_type_names ⇒ Object

Returns the value of attribute default_type_names.



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# File 'lib/rbind/core/rnamespace.rb', line 11

def default_type_names
  @default_type_names
end

Instance Attribute Details

#consts ⇒ Object (readonly)

Returns the value of attribute consts.



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# File 'lib/rbind/core/rnamespace.rb', line 52

def consts
  @consts
end

#operation_alias ⇒ Object (readonly)

Returns the value of attribute operation_alias.



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# File 'lib/rbind/core/rnamespace.rb', line 51

def operation_alias
  @operation_alias
end

#operations ⇒ Object (readonly)

Returns the value of attribute operations.



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# File 'lib/rbind/core/rnamespace.rb', line 50

def operations
  @operations
end

#root ⇒ Object (readonly)

Returns the value of attribute root.



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# File 'lib/rbind/core/rnamespace.rb', line 55

def root
  @root
end

#type_alias ⇒ Object (readonly)

Returns the value of attribute type_alias.



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# File 'lib/rbind/core/rnamespace.rb', line 54

def type_alias
  @type_alias
end

#used_namespaces ⇒ Object (readonly)

Returns the value of attribute used_namespaces.



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# File 'lib/rbind/core/rnamespace.rb', line 53

def used_namespaces
  @used_namespaces
end

Class Method Details

.default_operators ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 585

def self.default_operators
    default_operator_alias.keys
end

Instance Method Details

#add_const(const) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 315

def add_const(const)
    const.const!
    if(c = const(const.full_name,false,false))
        if c.type.full_name == const.type.full_name && c.default_value == const.default_value
            ::Rbind.log.warn "A const with the name #{const.full_name} already exists"
            return c
        else
            raise ArgumentError,"#A different const with the name #{const.full_name} already exists: #{const} != #{c}"
        end
    end
    if const.namespace? && self.full_name != const.namespace
        t=type(const.namespace,false)
        t ||= add_namespace(const.namespace)
        t.add_const(const)
    else
        const.owner = self
        @consts[const.name] = const
    end
    const
end

#add_const_val(name, value) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 310

def add_const_val(name,value)
    c = RParameter.new(name,type("const int"),value)
    add_const(c)
end

#add_default_types ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 336

def add_default_types
    add_simple_types RNamespace.default_type_names
    type("uchar").cname("unsigned char")
    type("c_string").cname("char *")
    RNamespace.default_type_alias.each_pair do |key,val|
        next if @type_alias.has_key?(key)
        @type_alias[key.to_s] = type(val)
    end
    self
end

#add_namespace(namespace_name) ⇒ Object

TODO rename to add_namespace_name



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# File 'lib/rbind/core/rnamespace.rb', line 294

def add_namespace(namespace_name)
    names = namespace_name.split("::")
    current_type = self
    while !names.empty?
        name = names.shift
        temp = current_type.type(name,false,false)
        current_type = if temp
                           temp
                       else
                           ::Rbind.log.debug "missing namespace: add #{current_type.full_name unless current_type.root?}::#{name}"
                           current_type.add_type(RNamespace.new(name))
                       end
    end
    current_type
end

#add_operation(op, &block) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 259

def add_operation(op,&block)
    if op.is_a? String
        op = ROperation.new(op,void)
        op.owner = self
        instance_exec(op,&block) if block
        return add_operation(op)
    end

    op.owner = self
    # make sure there is no name clash
    other = @operations[op.name].find do |o|
        o.cname == op.cname
    end
    other ||= @operation_alias[op.name].find do |o|
        o.cname == op.cname
    end
    op.alias = if !other
                   op.alias
               elsif op.alias
                   name = "#{op.alias}__#{@operations[op.name].size+1}"
                   ::Rbind.log.debug "add_operation: name clash: aliasing #{op.alias} --> #{name}"
                   name
               else
                   op.auto_alias = true
                   name = "#{op.name}__#{@operations[op.name].size+1}"
                   ::Rbind.log.debug "add_operation: name clash: #{op.name} --> #{name}"
                   name
               end
    op.index = @operations[op.name].size
    @operations[op.name] << op
    @operation_alias[op.alias] << op if op.alias
    op
end

#add_simple_type(name) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 347

def add_simple_type(name)
    add_type(RDataType.new(name))
end

#add_simple_types(*names) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 351

def add_simple_types(*names)
    names.flatten!
    names.each do |n|
        add_simple_type(n)
    end
end

#add_type(type, check_exist = true) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 358

def add_type(type,check_exist = true)
    if check_exist && type(type.full_name,false,false)
        raise ArgumentError,"A type with the name #{type.full_name} already exists"
    end
    # if self is not the right namespace
    if type.namespace? && self.full_name != type.namespace && !(self.full_name =~/(.*)::#{type.namespace}/)
        t=type(type.namespace,false)
        t ||=add_namespace(type.namespace)
        t.add_type(type)
    else
        type.owner = self
        if type.alias
            add_type_alias(type, type.alias, check_exist)
        end
        raise ArgumentError,"A type with the name #{t.full_name} already exists" if(t = @types[type.name])
        @types[type.name] = type.to_raw
    end
    type
end

#add_type_alias(known_type, alias_name, check_exist = true) ⇒ Object

Adding a type alias in the main namespace, e.g. to register existing typedefs

raises if the alias is already register under a given typename



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# File 'lib/rbind/core/rnamespace.rb', line 571

def add_type_alias(known_type, alias_name, check_exist = true)
    if check_exist && type_alias.has_key?(alias_name)
        existing_type = type(alias_name, false, false)
        if known_type.name == existing_type.name
            ::Rbind.log.warn "Alias: '#{alias_name} for type '#{known_type.name}' already registered'"
        else
            raise ArgumentError, "Cannot register alias: #{alias_name} for type '#{known_type.name}'. Alias already registered with type: '#{existing_type.name}'"
        end
    else
        ::Rbind.log.debug "Alias: '#{alias_name} for type '#{known_type.name}' registered"
        @type_alias[alias_name] = known_type.to_raw
    end
end

#const(name, raise_ = true, search_owner = true) ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/rbind/core/rnamespace.rb', line 153

def const(name,raise_ = true,search_owner = true)
    hash = @consts.merge(enum_hash)
    c = if hash.has_key?(name)
            hash[name]
        else
            if !!(ns = RBase.namespace(name))
                t = type(ns,false)
                t.const(RBase.basename(name),false,false) if t
            end
        end
    c ||= begin
              used_namespaces.each do |ns|
                  c = ns.const(name,false,false)
                  break if c
              end
              c
          end
    c ||= if search_owner && owner
              owner.const(name,false)
          end
    raise RuntimeError,"#{full_name} has no const called #{name}" if raise_ && !c
    c
end

#constructor? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rnamespace.rb', line 85

def constructor?
    false
end

#container? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rnamespace.rb', line 239

def container?
    true
end

#delete_type(name) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 93

def delete_type(name)
    ns = RBase.namespace(name)
    if ns
        type(ns).delete_type(RBase.basename(name))
    else
        @types.delete(name)
    end
end

#each_const(childs = true, all = false, &block) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 177

def each_const(childs=true,all=false,&block)
    if block_given?
        consts.each do |c|
            next if !all && (c.ignore? || c.extern?)
            yield c
        end
        return unless childs
        each_container(false,all) do |t|
            t.each_const(childs,all,&block)
        end
    else
        Enumerator.new(self,:each_const,childs,all)
    end
end

#each_container(childs = true, all = false, &block) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 128

def each_container(childs=true,all=false,&block)
    each_type(childs,all) do |t|
        next unless t.container?
        yield t
    end
end

#each_operation(all = false, &block) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 208

def each_operation(all=false,&block)
    if block_given?
        operations.each do |ops|
            ops.each do |o|
                next if !all && o.ignore?
                yield o
            end
        end
    else
        Enumerator.new(self,:each_operaion,all)
    end
end

#each_type(childs = true, all = false, &block) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 116

def each_type(childs=true,all=false,&block)
    if block_given?
        types.each do |t|
            next if !all && (t.ignore? || t.extern? || t.template?)
            yield t
            t.each_type(childs,all,&block) if childs && t.respond_to?(:each_type)
        end
    else
        Enumerator.new(self,:each_type,childs,all)
    end
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rnamespace.rb', line 506

def empty?
    consts.empty? && types.empty? && operations.empty?
end

#enum_hash ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 135

def enum_hash
    @enum_hash ||= Hash.new     # cache values so that they can be modified
    @types.each_value do |t|
        next unless t.is_a? REnum
        t.values.each do |key,value|
            next if @enum_hash.has_key?(key)
            p = RParameter.new(key,type("const int"),value)
            p.owner = self
            @enum_hash[key] = p
        end
    end
    @enum_hash
end

#extern? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rnamespace.rb', line 192

def extern?
    return super if self.is_a? RClass

    # check if self is container holding only
    # extern objects
    each_type(false) do |t|
        return false if !t.extern?
    end
    each_const(false) do |c|
        return false if !c.extern?
    end
    each_operation do |t|
        return false
    end
end

#operation(name, raise_ = true) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 243

def operation(name,raise_=true)
    ops = @operations[name]
    if(ops.size == 1)
        ops.first
    elsif ops.empty?
        @operations.delete name
        raise "#{full_name} has no operation called #{name}." if raise_
    else
        ops
    end
end

#operation?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rnamespace.rb', line 255

def operation?(name)
    !!operation(name,false)
end

#pretty_print(pp) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 510

def pretty_print(pp)
    pp.text pretty_print_name unless root?

    unless consts.empty?
        pp.nest(2) do
            pp.breakable
            pp.text "Consts:"
            pp.nest(2) do
                consts.each do |c|
                    pp.breakable
                    pp.pp(c)
                end
            end
        end
    end
    unless types.empty?
        pp.nest(2) do
            pp.breakable
            pp.text "Types:"
            pp.nest(2) do
                simple = []
                other = []
                types.each do |t|
                    if t.basic_type? && !t.container?
                        simple << t.name
                    else 
                        other << t
                    end
                end
                if !simple.empty?
                    pp.breakable
                    pp.text(simple.join(", "))
                end
                other.each do |t|
                    pp.breakable
                    pp.pp(t)
                end
            end
        end
    end

    unless operations.empty?
        pp.nest(2) do
            pp.breakable
            pp.text "Operations:"
            pp.nest(2) do
                operations.each do |op|
                    op.each do |o|
                        pp.breakable
                        pp.pp(o)
                    end
                end
            end
        end
    end
end

#pretty_print_name ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 498

def pretty_print_name
    "namespace #{full_name}"
end

#root? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rnamespace.rb', line 81

def root?
    !!root
end

#type(name, raise_ = true, search_owner = true) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 382

def type(name,raise_ = true,search_owner = true)
    name = name.to_s
    constant = if name =~ /const /
                   true
               else
                   false
               end
    name = name.gsub("unsigned ","u").gsub("const ","").gsub(" ","").gsub(">>","> >")

    t = if @types.has_key?(name)
            @types[name]
        elsif @type_alias.has_key?(name)
            @type_alias[name]
        else
            if !!(ns = RBase.namespace(name))
                ns = ns.split("::")
                ns << RBase.basename(name)
                t = type(ns.shift,false,false)
                t.type(ns.join("::"),false,false) if t
            end
        end
    t ||= begin
              used_namespaces.each do |ns|
                  t = ns.type(name,false,false)
                  break if t
              end
              t
          end
    t ||= if search_owner && owner
              owner.type(name,false)
          end
    # check if type is a pointer and pointee is registered
    t ||= begin
              ptr_level = $1.to_s.size if name  =~ /(\**)$/
              name2 = name.gsub("*","")
              ref_level = $1.to_s.size if name2  =~ /(&*)$/
              name2 = name2.gsub("&","")
              if ptr_level > 0 || ref_level > 0
                  t = type(name2,raise_,search_owner)
                  if t
                      1.upto(ptr_level) do
                          t = t.to_ptr
                      end
                      1.upto(ref_level) do
                          t = t.to_ref
                      end
                     # t.owner.add_type(t,false)
                      t
                  end
              end
          end

    # check if type is a template and a template is registered
    # under the given name
    t ||=  if search_owner && name =~ /([:\w]*)<(.*)>$/
              t = type($1,false) if $1 && !$1.empty?
t2 = if $2 && !$2.empty?
  t2 = $2.split(',')
  bok = true
  t2 = t2.map do |t3|
				   t3 = type(t3,false)
				   bok = false unless t3 
				   t3
  end
  if bok
				   t2
  else
				   nil
  end
			   end
              # template is known to this library
              if t && t2 
			  name = "#{t.name}<#{t2.map{|t|t.full_name}.join(",")}>"
                  t3 ||= t.owner.type(name,false,false)
                  t3 ||= begin
                             if !t.template?
                                 ::Rbind.log.error "try to spezialize a class #{t.full_name} --> #{name}"
                                 nil
                             else
                                 t3 = t.do_specialize(name,t2)
                                 if !t3
                                     ::Rbind.log.error "Failed to specialize template #{t.full_name} --> #{name}"
                                     nil
                                 else
                                     t.owner.add_type(t3,false)
                                     ::Rbind.log.info "spezialize template #{t.full_name} --> #{t3.full_name}"
                                     t3
                                 end
                             end
                         end
              # generic template is unknown
              # check if specialised template is known
              elsif t2 && $1 && !$1.empty? 
			  real_name = t2.map{|v|v.full_name}.join(",");
                  real_name = "#{$1}<#{real_name}>".gsub(">>","> >")
                  type(real_name,false) if(real_name != name) # prevent stack level too deep
              else
                  nil
              end
            end
    if !t && raise_
        if RNamespace.callbacks_for_hook(:on_type_not_found)
            results = RNamespace.run_hook(:on_type_not_found,self,name)
            t = results.find do |t|
                t.respond_to?(:type)
            end
        end
        raise RuntimeError,"#{full_name} has no type called #{name}" if !t
    end
    if constant
        t.to_const
    else
        t
    end
end

#type?(name, search_owner = true) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbind/core/rnamespace.rb', line 378

def type?(name,search_owner = true)
    !type(name,false,search_owner).nil?
end

#types ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 89

def types
    @types.values
end

#use_namespace(namespace) ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 102

def use_namespace(namespace)
    # Check if there is another root embedded
    # and add the corresponding namespace.
    # This is needed to support multiple roots providing
    # types to the same namespace
    @used_namespaces.each do |ns|
        next unless ns.root?
        if (ns2 = ns.type(namespace.full_name,false))
            @used_namespaces << ns2 if ns.object_id != namespace.object_id
        end
    end
    @used_namespaces << namespace
end

#used_extern_types ⇒ Object 



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# File 'lib/rbind/core/rnamespace.rb', line 221

def used_extern_types
    extern = Set.new
    each_operation do |op|
        extern << op.return_type.to_raw if op.return_type && op.return_type.extern?
        op.parameters.each do |arg|
            extern << arg.type.to_raw if arg.type.extern?
        end
    end
    each_container do |type|
        extern += type.used_extern_types
    end
    extern
end