diff options
Diffstat (limited to 'ext/dl/lib/dl/import.rb')
| -rw-r--r-- | ext/dl/lib/dl/import.rb | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/ext/dl/lib/dl/import.rb b/ext/dl/lib/dl/import.rb deleted file mode 100644 index 6f157ccf28..0000000000 --- a/ext/dl/lib/dl/import.rb +++ /dev/null @@ -1,268 +0,0 @@ -require 'dl' -require 'dl/func.rb' -require 'dl/struct.rb' -require 'dl/cparser.rb' - -module DL - class CompositeHandler - def initialize(handlers) - @handlers = handlers - end - - def handlers() - @handlers - end - - def sym(symbol) - @handlers.each{|handle| - if( handle ) - begin - addr = handle.sym(symbol) - return addr - rescue DLError - end - end - } - return nil - end - - def [](symbol) - sym(symbol) - end - end - - # DL::Importer includes the means to dynamically load libraries and build - # modules around them including calling extern functions within the C - # library that has been loaded. - # - # == Example - # - # require 'dl' - # require 'dl/import' - # - # module LibSum - # extend DL::Importer - # dlload './libsum.so' - # extern 'double sum(double*, int)' - # extern 'double split(double)' - # end - # - module Importer - include DL - include CParser - extend Importer - - def dlload(*libs) - handles = libs.collect{|lib| - case lib - when nil - nil - when Handle - lib - when Importer - lib.handlers - else - begin - DL.dlopen(lib) - rescue DLError - raise(DLError, "can't load #{lib}") - end - end - }.flatten() - @handler = CompositeHandler.new(handles) - @func_map = {} - @type_alias = {} - end - - def typealias(alias_type, orig_type) - @type_alias[alias_type] = orig_type - end - - def sizeof(ty) - @type_alias ||= nil - case ty - when String - ty = parse_ctype(ty, @type_alias).abs() - case ty - when TYPE_CHAR - return SIZEOF_CHAR - when TYPE_SHORT - return SIZEOF_SHORT - when TYPE_INT - return SIZEOF_INT - when TYPE_LONG - return SIZEOF_LONG - when TYPE_LONG_LONG - return SIZEOF_LONG_LON - when TYPE_FLOAT - return SIZEOF_FLOAT - when TYPE_DOUBLE - return SIZEOF_DOUBLE - when TYPE_VOIDP - return SIZEOF_VOIDP - else - raise(DLError, "unknown type: #{ty}") - end - when Class - if( ty.instance_methods().include?(:to_ptr) ) - return ty.size() - end - end - return CPtr[ty].size() - end - - def parse_bind_options(opts) - h = {} - while( opt = opts.shift() ) - case opt - when :stdcall, :cdecl - h[:call_type] = opt - when :carried, :temp, :temporal, :bind - h[:callback_type] = opt - h[:carrier] = opts.shift() - else - h[opt] = true - end - end - h - end - private :parse_bind_options - - def extern(signature, *opts) - @type_alias ||= nil - symname, ctype, argtype = parse_signature(signature, @type_alias) - opt = parse_bind_options(opts) - f = import_function(symname, ctype, argtype, opt[:call_type]) - name = symname.gsub(/@.+/,'') - @func_map[name] = f - # define_method(name){|*args,&block| f.call(*args,&block)} - begin - /^(.+?):(\d+)/ =~ caller.first - file, line = $1, $2.to_i - rescue - file, line = __FILE__, __LINE__+3 - end - module_eval(<<-EOS, file, line) - def #{name}(*args, &block) - @func_map['#{name}'].call(*args,&block) - end - EOS - module_function(name) - f - end - - def bind(signature, *opts, &blk) - @type_alias ||= nil - name, ctype, argtype = parse_signature(signature, @type_alias) - h = parse_bind_options(opts) - case h[:callback_type] - when :bind, nil - f = bind_function(name, ctype, argtype, h[:call_type], &blk) - when :temp, :temporal - f = create_temp_function(name, ctype, argtype, h[:call_type]) - when :carried - f = create_carried_function(name, ctype, argtype, h[:call_type], h[:carrier]) - else - raise(RuntimeError, "unknown callback type: #{h[:callback_type]}") - end - @func_map[name] = f - #define_method(name){|*args,&block| f.call(*args,&block)} - begin - /^(.+?):(\d+)/ =~ caller.first - file, line = $1, $2.to_i - rescue - file, line = __FILE__, __LINE__+3 - end - module_eval(<<-EOS, file, line) - def #{name}(*args,&block) - @func_map['#{name}'].call(*args,&block) - end - EOS - module_function(name) - f - end - - # Creates a class to wrap the C struct described by +signature+. - # - # MyStruct = struct ['int i', 'char c'] - def struct(signature) - @type_alias ||= nil - tys, mems = parse_struct_signature(signature, @type_alias) - DL::CStructBuilder.create(CStruct, tys, mems) - end - - # Creates a class to wrap the C union described by +signature+. - # - # MyUnion = union ['int i', 'char c'] - def union(signature) - @type_alias ||= nil - tys, mems = parse_struct_signature(signature, @type_alias) - DL::CStructBuilder.create(CUnion, tys, mems) - end - - def [](name) - @func_map[name] - end - - def create_value(ty, val=nil) - s = struct([ty + " value"]) - ptr = s.malloc() - if( val ) - ptr.value = val - end - return ptr - end - alias value create_value - - def import_value(ty, addr) - s = struct([ty + " value"]) - ptr = s.new(addr) - return ptr - end - - def handler - defined?(@handler) or raise "call dlload before importing symbols and functions" - @handler - end - - def import_symbol(name) - addr = handler.sym(name) - if( !addr ) - raise(DLError, "cannot find the symbol: #{name}") - end - CPtr.new(addr) - end - - def import_function(name, ctype, argtype, call_type = nil) - addr = handler.sym(name) - if( !addr ) - raise(DLError, "cannot find the function: #{name}()") - end - Function.new(CFunc.new(addr, ctype, name, call_type || :cdecl), argtype) - end - - def bind_function(name, ctype, argtype, call_type = nil, &block) - if DL.fiddle? - klass = Function.instance_eval { class_fiddle_closure_cfunc } - abi = Function.instance_eval { call_type_to_abi(call_type) } - closure = Class.new(klass) { - define_method(:call, block) - }.new(ctype, argtype, abi, name) - - Function.new(closure, argtype, abi) - else - f = Function.new(CFunc.new(0, ctype, name, call_type || :cdecl), argtype) - f.bind(&block) - f - end - end - - def create_temp_function(name, ctype, argtype, call_type = nil) - TempFunction.new(CFunc.new(0, ctype, name, call_type || :cdecl), argtype) - end - - def create_carried_function(name, ctype, argtype, call_type = nil, n = 0) - CarriedFunction.new(CFunc.new(0, ctype, name, call_type || :cdecl), argtype, n) - end - end -end |