method

of

v2_6_3 - Show latest stable - 0 notes - Class: AbstractSyntaxTree

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2_6_3 (0)
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of(p1) public

Returns AST nodes of the given proc or method.

RubyVM::AbstractSyntaxTree.of(proc {1 + 2})
# => #<RubyVM::AbstractSyntaxTree::Node(NODE_SCOPE(0) 1:35, 1:42): >

def hello
  puts "hello, world"
end

RubyVM::AbstractSyntaxTree.of(method(:hello))
# => #<RubyVM::AbstractSyntaxTree::Node(NODE_SCOPE(0) 1:0, 3:3): >

Show source

static VALUE
rb_ast_s_of(VALUE module, VALUE body)
{
    VALUE path, node, lines;
    int node_id;
    const rb_iseq_t *iseq = NULL;

    if (rb_obj_is_proc(body)) {
        iseq = vm_proc_iseq(body);

        if (!rb_obj_is_iseq((VALUE)iseq)) {
            iseq = NULL;
        }
    }
    else {
        iseq = rb_method_iseq(body);
    }

    if (!iseq) return Qnil;

    path = rb_iseq_path(iseq);
    node_id = iseq->body->location.node_id;
    if (!NIL_P(lines = script_lines(path))) {
        node = rb_ast_parse_array(lines);
    }
    else if (RSTRING_LEN(path) == 2 && memcmp(RSTRING_PTR(path), "-e", 2) == 0) {
        node = rb_ast_parse_str(rb_e_script);
    }
    else {
        node = rb_ast_parse_file(path);
    }

    return node_find(node, node_id);
}

of

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