Class: DL::CStructEntity
Constant Summary
Constants included
from PackInfo
PackInfo::ALIGN_MAP, PackInfo::PACK_MAP, PackInfo::SIZE_MAP
Class Method Summary
collapse
Instance Method Summary
collapse
Methods included from ValueUtil
#signed_value, #unsigned_value, #wrap_arg, #wrap_args
Methods included from PackInfo
align
Methods inherited from CPtr
#+, #+@, #-, #-@, #<=>, #==, [], #eql?, #free, #free=, #inspect, #null?, #ptr, #ref, #size, #size=, #to_i, #to_int, to_ptr, #to_str, #to_value
Constructor Details
#initialize(addr, types, func = nil) ⇒ CStructEntity
Returns a new instance of CStructEntity.
79
80
81
82
|
# File 'lib/dl/struct.rb', line 79
def initialize(addr, types, func = nil)
set_ctypes(types)
super(addr, @size, func)
end
|
Class Method Details
.malloc(types, func = nil) ⇒ Object
.size(types) ⇒ Object
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
# File 'lib/dl/struct.rb', line 55
def CStructEntity.size(types)
offset = 0
max_align = 0
types.each_with_index{|t,i|
orig_offset = offset
if( t.is_a?(Array) )
align = PackInfo::ALIGN_MAP[t[0]]
offset = PackInfo.align(orig_offset, align)
size = offset - orig_offset
offset += (PackInfo::SIZE_MAP[t[0]] * t[1])
else
align = PackInfo::ALIGN_MAP[t]
offset = PackInfo.align(orig_offset, align)
size = offset - orig_offset
offset += PackInfo::SIZE_MAP[t]
end
if (max_align < align)
max_align = align
end
}
offset = PackInfo.align(offset, max_align)
offset
end
|
Instance Method Details
#[](name) ⇒ Object
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
# File 'lib/dl/struct.rb', line 115
def [](name)
idx = @members.index(name)
if( idx.nil? )
raise(ArgumentError, "no such member: #{name}")
end
ty = @ctypes[idx]
if( ty.is_a?(Array) )
r = super(@offset[idx], SIZE_MAP[ty[0]] * ty[1])
else
r = super(@offset[idx], SIZE_MAP[ty.abs])
end
packer = Packer.new([ty])
val = packer.unpack([r])
case ty
when Array
case ty[0]
when TYPE_VOIDP
val = val.collect{|v| CPtr.new(v)}
end
when TYPE_VOIDP
val = CPtr.new(val[0])
else
val = val[0]
end
if( ty.is_a?(Integer) && (ty < 0) )
return unsigned_value(val, ty)
elsif( ty.is_a?(Array) && (ty[0] < 0) )
return val.collect{|v| unsigned_value(v,ty[0])}
else
return val
end
end
|
#[]=(name, val) ⇒ Object
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
# File 'lib/dl/struct.rb', line 148
def []=(name, val)
idx = @members.index(name)
if( idx.nil? )
raise(ArgumentError, "no such member: #{name}")
end
ty = @ctypes[idx]
packer = Packer.new([ty])
val = wrap_arg(val, ty, [])
buff = packer.pack([val].flatten())
super(@offset[idx], buff.size, buff)
if( ty.is_a?(Integer) && (ty < 0) )
return unsigned_value(val, ty)
elsif( ty.is_a?(Array) && (ty[0] < 0) )
return val.collect{|v| unsigned_value(v,ty[0])}
else
return val
end
end
|
#assign_names(members) ⇒ Object
84
85
86
|
# File 'lib/dl/struct.rb', line 84
def assign_names(members)
@members = members
end
|
#set_ctypes(types) ⇒ Object
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
# File 'lib/dl/struct.rb', line 88
def set_ctypes(types)
@ctypes = types
@offset = []
offset = 0
max_align = 0
types.each_with_index{|t,i|
orig_offset = offset
if( t.is_a?(Array) )
align = ALIGN_MAP[t[0]]
else
align = ALIGN_MAP[t]
end
offset = PackInfo.align(orig_offset, align)
@offset[i] = offset
if( t.is_a?(Array) )
offset += (SIZE_MAP[t[0]] * t[1])
else
offset += SIZE_MAP[t]
end
if (max_align < align)
max_align = align
end
}
offset = PackInfo.align(offset, max_align)
@size = offset
end
|
#to_s ⇒ Object
167
168
169
|
# File 'lib/dl/struct.rb', line 167
def to_s()
super(@size)
end
|