Class: Node::RESCUE

Inherits:

Node

• Object
• Node
• Node::RESCUE

Defined in:

ext/internal/node/nodeinfo.c,
ext/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.4/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.4/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.5/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.5/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.6/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.6/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.7/internal/node/nodeinfo.c,
ext/cached/ruby-1.8.7/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.1/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.1/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.2/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.2/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.3/internal/node/nodeinfo.c,
ext/cached/ruby-1.9.3/internal/node/nodeinfo.c

Overview

Represents part of a rescue expression of the form:

head rescue expr

or the longer form:

begin
  head
rescue exception
  expr
end

or the form using the else keyword:

begin
  head
rescue exception
  expr
else
  else_expr
end

The head expression is first evaluated, and if an exception is raised, evaluates the resq node. If no exception is raised, the else node is evaluated if it is not false (0).

The resq node will be a RESBDOY node, which will test the exception to see if it matches one of the expected types. If it does it will handle the exception, otherwise it will allow the expression to pass to the outer scope.

Class Method Summary

• .members ⇒ Array

  Return an array of strings containing the names of the node class’s members.

Instance Method Summary

• #else ⇒ Object

  Return the Node’s else member.

• #head ⇒ Object

  Return the Node’s head member.

• #resq ⇒ Object

  Return the Node’s resq member.

Methods inherited from Node

#[], #_dump, _load, #address, #bytecode_compile, compile_string, #eval, #flags, #inspect, #members, #nd_file, #nd_line, #nd_type, #obfusc, #pretty_print, #swap, #to_a, #tree, type

Class Method Details

.members ⇒ Array

Return an array of strings containing the names of the node class’s members.

Returns:

• (Array)

# File 'ext/internal/node/nodeinfo.c', line 2793

VALUE node_s_members(VALUE klass)
{
  return rb_iv_get(klass, "__member__");
}

Instance Method Details

#else ⇒ Object

Return the Node’s else member. The return type is either a Node or an Object.

# File 'ext/internal/node/nodeinfo.c', line 2237

static VALUE node_else(VALUE self)
{
  NODE * n;
  Data_Get_Struct(self, NODE, n);

  if(TYPE(n->nd_else) == T_NODE)
  {
    if(0 && nd_type(n) == NODE_OP_ASGN2)
    {
      return wrap_node_as(
        (NODE *)n->nd_else,
        rb_cNodeSubclass[NODE_OP_ASGN2_ARG]);
    }
    else
    {
      return wrap_node((NODE *)n->nd_else);
    }
  }
  else
  {
    return (VALUE)n->nd_else;
  }
}

#head ⇒ Object

Return the Node’s head member. The return type is either a Node or an Object.

# File 'ext/internal/node/nodeinfo.c', line 2335

static VALUE node_head(VALUE self)
{
  NODE * n;
  Data_Get_Struct(self, NODE, n);

  if(TYPE(n->nd_head) == T_NODE)
  {
    if(0 && nd_type(n) == NODE_OP_ASGN2)
    {
      return wrap_node_as(
        (NODE *)n->nd_head,
        rb_cNodeSubclass[NODE_OP_ASGN2_ARG]);
    }
    else
    {
      return wrap_node((NODE *)n->nd_head);
    }
  }
  else
  {
    return (VALUE)n->nd_head;
  }
}

#resq ⇒ Object

Return the Node’s resq member. The return type is either a Node or an Object.

# File 'ext/internal/node/nodeinfo.c', line 2538

static VALUE node_resq(VALUE self)
{
  NODE * n;
  Data_Get_Struct(self, NODE, n);

  if(TYPE(n->nd_resq) == T_NODE)
  {
    if(0 && nd_type(n) == NODE_OP_ASGN2)
    {
      return wrap_node_as(
        (NODE *)n->nd_resq,
        rb_cNodeSubclass[NODE_OP_ASGN2_ARG]);
    }
    else
    {
      return wrap_node((NODE *)n->nd_resq);
    }
  }
  else
  {
    return (VALUE)n->nd_resq;
  }
}