Module: FastRuby::ExceptionsTranslator

Defined in:
lib/fastruby/translator/modules/exceptions.rb

Instance Method Summary collapse

Instance Method Details

#_raise(class_tree, message_tree = nil) ⇒ Object 



108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
 
# File 'lib/fastruby/translator/modules/exceptions.rb', line 108

def _raise(class_tree, message_tree = nil)
  class_tree = to_c class_tree unless class_tree.instance_of? String

  if message_tree.instance_of? String
    message_tree = "rb_str_new2(#{message_tree.inspect})"
  else
    message_tree = to_c message_tree
  end

  if message_tree
    return inline_block("
        pframe->thread_data->exception = rb_funcall(#{class_tree}, #{intern_num :exception},1,#{message_tree});
        longjmp(pframe->jmp, FASTRUBY_TAG_RAISE);
        return Qnil;
        ")
  else
    return inline_block("
        pframe->thread_data->exception = rb_funcall(#{class_tree}, #{intern_num :exception},0);
        longjmp(pframe->jmp, FASTRUBY_TAG_RAISE);
        return Qnil;
        ")
  end

end

#to_c_ensure(tree) ⇒ Object 



97
98
99
100
101
102
103
104
105
106
 
# File 'lib/fastruby/translator/modules/exceptions.rb', line 97

def to_c_ensure(tree)
  if tree.size == 2
    to_c tree[1]
  else
    ensured_code = to_c tree[2]
    inline_block "
      #{frame(to_c(tree[1]),ensured_code,ensured_code,1)};
    "
  end
end

#to_c_rescue(tree) ⇒ Object 



26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
 
# File 'lib/fastruby/translator/modules/exceptions.rb', line 26

def to_c_rescue(tree)
  if tree[1][0] == :resbody
    else_tree = tree[2]

    if else_tree
      to_c else_tree
    else
      "Qnil"
    end
  else
    resbody_tree = tree[2]
    else_tree = nil
    if tree[-1]
      if tree[-1][0] != :resbody
        else_tree = tree[-1]
      end
    end

    catch_condition_array = []
    lasgn_code = ""
    resbody_code = to_c(resbody_tree[2])

    rescue_code = ""

    tree[1..-1].each do |resbody_tree|
      next if resbody_tree[0] != :resbody

      if resbody_tree[1].size == 1
        resbody_tree[1][1] = [:const, :Exception]
      end

      if resbody_tree[1].last[0] == :lasgn
        lasgn_code = to_c(resbody_tree[1].last)
      end

      resbody_tree[1][1..-1].each do |xtree|
        if xtree[0] != :lasgn
          trapcode = "rb_eException";

          if xtree
            trapcode = to_c(xtree)
          end

          catch_condition_array << "(rb_obj_is_kind_of(frame.thread_data->exception,#{trapcode}) == Qtrue)"
        end
      end

      rescue_code << "
        if (aux == FASTRUBY_TAG_RAISE) {
          if (#{catch_condition_array.join(" || ")})
          {
            // trap exception
            frame.targetted = 1;

            #{lasgn_code};

             #{resbody_code};
          }
        }
      "
    end

    frame_call(
      "ret = " + frame(to_c(tree[1])+";","
        #{rescue_code}
      ", else_tree ? to_c(else_tree) : nil, 1)

      )
  end
end