class Document:
    def __init__(self, mod, node, env):
        self.mod = mod
        self.env = env

        self.kindbrackets = mod.kindbrackets
        self.eitherbrackets = mod.eitherbrackets
        self.anykind = mod.anykind

        self.out = []
        self.localstack = []
        self.outstack = []
        self.output_directives = []
        self.document_title = None
        self.specified_definitions = None
        self.macro_args = None
        self.subdoc = None
        self.in_in = 0
        self.macro_stack = []

        node.accept(self)

        self.result = self.node_of_taci('string', '', self.out, 0)

    @property
    def doc_name_node(self):
        return self.node_of_taci('text', self.get_doc_name())

    def _visit_children(self, node):
        E = self.mod.ReportedError
        for ch in node.children:
            try:
                ch.accept(self)
            except E:
                pass

    def _visit_subjects(self, subjects):
        for s in subjects:
            self.out.append(self.node_of_taci('symbol', s.tgtfullname))

    def _visit_gets(self, node, what):
        self._visit_subjects(
            getattr(self.get_arg_subject(node), 'get_%s' % what)())

    def ap_text(self, text):
        self.out.append(self.node_of_taci('text', text, (), 0))

    def close(self, chktag=None, n=1, chk=None, get=False):
        for i in range(n):
            out, tag, arg = self.outstack.pop()
            node = self.node_of_taci(tag, arg, self.out)
            if not get:
                out.append(node)
            self.out = out
            if chk is not None:
                assert chk is out
        if chktag is not None:
            assert chktag == tag
        return node

    def error(self, msg, context=None, **kwds):
        msg = 'Document: ' + msg
        more = [('Macro call site.', ms[0]) for ms in self.macro_stack]
        more.reverse()

        self.env.error(msg, context, more=more, **kwds)

    def error_no_sub_element(self, node, subelement):
        self.error('No such subelement allowed in the enclosing element %r.' %
                   node.tag, subelement, exception=None)

    def expand_arg(self, arg):
        i = len(self.localstack) - 1
        while i >= 0:
            argnode = self.localstack[i].get(arg)
            if argnode is not None:
                assert argnode.tag == 'symbol'
                return argnode.arg.strip()
            i -= 1
        return arg

    def expand_list(self, li):
        oldout = self.out
        self.out = newout = []
        for node in li:
            node.accept(self)
        self.out = oldout
        return newout

    def expand_node(self, node, optarg=0, optmore=0):
        arg, rest = self.get_arg_rest(
            node, optarg=optarg, optmore=optmore, nostrip=1)
        return self.node_of_taci(node.tag, arg, rest, node.index, node.src)

    def gen_char(self, char):
        self.gen_tag('char', char)

    def gen_document_header(self):
        self.open('document_header')
        self.close()

    def gen_document_trailer(self):
        self.open('document_trailer')
        self.close()

    def gen_link_to(self, s, text=None, children=()):
        if text is not None:
            children = list(children)
            children.append(self.node_of_taci('text', text))
        ln = self.get_link_name(s)
        self.gen_tag('link_to', ln, children)

    def gen_localname(self, s):
        self.gen_link_to(s, s.get_local_name())

    def gen_symbol(self, arg):
        self.out.append(self.node_of_taci('symbol', arg))

    def gen_tag(self, tag, arg='', children=()):
        self.out.append(self.node_of_taci(tag, arg, children))

    def gen_text(self, text):
        self.gen_tag('text', text)

    def get_arg_only(self, node):
        arg, rest = self.get_arg_rest(node)
        if rest:
            self.error('Node has extra children, only 1 arg or child expected')
        return arg

    def get_arg_rest(self, node, optarg=0, optmore=0, nostrip=0):
        arg, rest = node.get_arg_rest(nostrip=nostrip)
        rest = self.expand_list(rest)
        if arg:
            arg = self.expand_arg(arg)
        else:
            if not (rest and rest[0].tag == 'symbol'):
                if not optarg:
                    self.error(
                        'Argument on line or as next children expected.', node)
            else:
                arg = rest[0].arg.strip()
                rest = rest[1:]
        if rest and rest[0].tag == 'symbol':
            if not optmore:
                self.error('More arguments than expected.', rest[0])
        return arg, rest

    def get_arg_subject(self, node):
        arg = self.get_arg_only(node)
        return self.get_subject(arg, node)

    def get_arg_subjects_rest(self, node):
        args, rest = self.get_arglist_rest(node)
        return [self.get_subject(a, node) for a in args], rest

    def get_arglist_only(self, node):
        args, rest = self.get_arglist_rest(node)
        if rest:
            self.error_no_sub_element(node, rest[0])
        return args

    def get_arglist_rest(self, node):
        args = []
        for arg in node.get_arglist():
            if not arg:
                self.error("Empty argument in arg list", node)
            arg = self.expand_arg(arg)
            args.append(arg)
        rest = []
        for a in self.expand_list(node.children):
            if a.tag == 'symbol':
                if rest:
                    self.error(
                        'Argument elements must be first in subelements.',
                        a,
                        exception=None)
                args.append(a.arg.strip())
            else:
                rest.append(a)
        return args, rest

    def get_cur_subject(self, node):
        sd = self.subdoc
        if not sd:
            self.error('No subject defined in current environment.', node)
        return sd.subject

    def get_doc_name(self):
        return self.document_name

    def get_filers(self, output_dir):
        if not self.output_directives:
            print('Document %r: No output directives' % self.name)
        filers = []
        r = self.get_result()
        name = self.get_doc_name()
        for (handler, opts) in self.output_directives:
            print('processing', handler, opts, name)
            filers.append(handler.doc2filer(
                self, r, name, output_dir, opts, self.mod.IO))
        return filers

    def get_link_name(self, a):
        return a.get_link_name()

    def get_macro_args(self, node):
        args = self.macro_args
        if args is None:
            self.error('Is not in macro', node)
        return args

    def get_result(self):
        return self.result

    def get_subject(self, name, node=None):
        return self.env.get_descr_by_name(name, node)

    def node_of_taci(self, *args):
        return self.mod.node_of_taci(*args)

    def open(self, tag, arg=''):
        self.outstack.append((self.out, tag, arg))
        self.out = []
        return self.out

    def subdoc_do(self, m, f):
        sd = SubDoc(self, m)
        osd = self.subdoc
        self.subdoc = sd
        sd.subdoc = sd
        try:
            f(sd)
        finally:
            self.subdoc = osd

    def visit_args(self, node):
        if self.macro_args is None:
            self.error('Not in macro', node)
        else:
            names = self.get_arglist_only(node)
            if len(names) != len(self.macro_args):
                self.error('%d args passed, here is %d names' % (len(self.macro_args), len(names)),
                           node)
            self.localstack.append(dict([(x.strip(), self.macro_args[i])
                                         for i, x in enumerate(names)]))

    def visit_arguments_of(self, node):
        self._visit_gets(node, 'arguments')

    def visit_attr_name_of(self, node):
        self.gen_symbol(self.get_arg_subject(node).get_attr_name())

    def visit_attributes_of(self, node):
        self._visit_gets(node, 'attributes')

    def visit_block(self, node):
        self.out.append(self.expand_node(node, optarg=1))

    def visit_default(self, node):
        self.out.append(self.expand_node(node, optarg=1, optmore=1))

    def visit_define(self, node):
        arg, rest = self.get_arg_rest(node)

        arg = self.get_link_name(self.get_subject(arg, node))
        self.out.append(self.node_of_taci(
            node.tag, arg, rest, node.index, node.src))

    def visit_defines(self, node):
        sd = self.specified_definitions
        if sd is None:
            sd = self.specified_definitions = []
        sd.extend(self.get_arglist_only(node))

    def visit_description_of(self, node):
        self.get_arg_subject(node).gen_description_doc(self)

    def visit_document(self, node):
        self.document_name = node.arg.strip()
        self.open('document')
        self._visit_children(node)
        if self.document_title is None:
            self.open('document_title')
            self.gen_text('GSL document %s' % self.document_name)
            self.close()
        self.close()

    def visit_document_title(self, node):
        self.document_title = node
        self.out.append(self.document_title)

    def visit_for(self, node):
        varname = node.get_namearg()

        if not node.children:
            self.error('For loop without subelements.', node)

        if not (node.children[0].tag == 'in'):
            self.error("First subelement of for loop must be 'in'.",
                       node.children[0])
        inode = node.children[0]

        names = self.get_arglist_only(inode)

        body = node.children[1:]
        if not body:
            self.error('For loop without body.', node)
        for name in names:
            self.localstack.append({
                varname: self.node_of_taci(
                    'symbol',
                    name, (), node.index)})
            try:
                for ch in body:
                    ch.accept(self)
            finally:
                self.localstack.pop()

    def visit_gsml(self, node):
        arg, rest = node.get_arg_rest()
        if arg:
            rest = [self.mod.node_of_taci(
                'text', arg, (), node.index, node.src)]+list(rest)
        self.open('block')
        for a in rest:
            if a.tag == 'text':
                a = self.mod.node_of_gsml(a.arg.strip())
            a.accept(self)
        self.close()

    def visit_id_of(self, node):
        self.ap_text(self.get_arg_subject(node).get_id_name())

    def visit_in(self, node):
        self.in_in += 1
        self.visit_default(node)
        self.in_in -= 1

    def visit_kind_of(self, node):
        self.gen_symbol(self.get_arg_subject(node).get_kind_name())

    def visit_label(self, node):
        subject = self.get_cur_subject(node)
        arg, rest = self.get_arg_rest(node)
        name = subject.get_link_name() + '.label:'+arg
        self.open('define', name)
        self.close()
        for r in rest:
            self.out.append(r)

    def visit_link_to(self, node):
        arg, rest = self.get_arg_rest(node)
        self.gen_link_to(self.get_subject(arg, node), children=rest)

    def visit_man_page_of(self, node):
        self.open('to_document_only')
        self.open('man_page_mode')
        subjects, rest = self.get_arg_subjects_rest(node)
        if rest:
            self.error_no_sub_element(node, rest[0])
        for subject in subjects:
            self.subdoc_do(subject, lambda sd: sd.gen_man_page(subject))

        self.close()
        self.close()

    def visit_mappings_of(self, node):
        self._visit_gets(node, 'mappings')

    def visit_meta(self, node):
        arg = node.arg.strip()
        if arg:
            colon = arg.find(':')
            if colon <= 0:
                self.error('Argument to meta, if any,  must be of the form <name>:<content>.',
                           node)
            name = arg[:colon].strip()
            content = arg[colon+1:].strip()
            mknode = self.mod.node_of_taci
            ch = (mknode('name', name), mknode(
                'content', content)) + node.children
            node = mknode('meta', '', ch)
        self.out.append(node)

    def visit_name_of(self, node):
        self.gen_text(self.get_arg_subject(node).get_name())

    def visit_output(self, node):
        mode, rest = self.get_arg_rest(node)
        modes = [x.strip() for x in mode.split(',')]
        for mode in modes:
            try:
                handler_name = self.mod.output_handlers[mode.lower()]
            except KeyError:
                self.error('Unknown output mode: %r. Expected one of %r.' % (
                    mode, list(self.mod.output_handlers.keys())),
                    node,
                    exception=None)
            else:
                handler = getattr(self.mod, handler_name)
                self.output_directives.append((handler, rest))

    def visit_ref(self, node):
        self.gen_text(' ')
        subject = self.get_cur_subject(node)
        arg, rest = self.get_arg_rest(node)
        text = arg
        if arg.startswith('.'):
            dl = arg.find('.', 1)
            if dl < 0:
                dl = len(arg)
            tag = arg[1:dl].strip()
            name = arg[dl+1:].strip()
        else:
            tag = 'myfile'
            name = arg
        if tag == 'mykind':
            idn = subject.get_link_name()
            if name:
                idn = idn + '.' + name
                text = name
            else:
                text = idn.split('.')[-1]
        elif tag == 'myfile':
            idn = subject.get_link_name()
            idn = '.'.join(idn.split('.')[:2])
            if name:
                idn = idn + '.' + name
                text = name
        else:
            self.error('Invalid tag: %r in reference.' % tag, node)

        if not rest:
            rest = [self.node_of_taci('text', text)]
        self.out.append(self.node_of_taci(
            'link_to', idn, rest, node.index))

    def visit_specified_definitions(self, node):
        if node.arg.strip() or node.children:
            self.error('No argument or subelement allowed for element %r.' % node.tag, node,
                       exception=None)
        if self.specified_definitions is None:
            self.error('No definitions have been specified.', node)
        for s in self.specified_definitions:
            self.out.append(self.node_of_taci(
                'symbol', s, (), node.index, node.src))

    def visit_symbol(self, node):
        arg = self.get_arg_only(node)
        if arg != node.arg.strip():
            node = self.node_of_taci(node.tag, arg, (), node.index, node.src)
        self.out.append(node)

    def visit_synopsis_of(self, node):
        self.open('to_document_only')
        self.open('man_page_mode')
        m = self.get_arg_subject(node)
        self.subdoc_do(m, lambda sd: sd.gen_mapping_doc(m))
        self.close()
        self.close()

    def visit_test_of(self, node):
        args, rest = self.get_arg_subjects_rest(node)
        for kind in args:
            self.open('to_tester_only')
            self.out.append(self.node_of_taci(
                node.tag, kind, rest, node.index, node.src))
            self.close()

    def visit_take_all(self, node):
        for a in self.get_macro_args(node):
            self.out.append(a)

    def visit_take_first(self, node):
        args = self.get_macro_args(node)
        if not args:
            self.error('No argument passed', node)
        self.out.append(args[0])

    def visit_take_rest(self, node):
        args = self.get_macro_args(node)
        if not args:
            self.error('No argument passed', node)
        for ch in args[1:]:
            self.out.append(ch)

    def visit_text(self, node):
        self.out.append(node)

    def visit_use(self, node):
        macrocolonarg, args = self.get_arg_rest(node)
        colonpos = macrocolonarg.find(':')
        if colonpos <= 0:
            macroname = macrocolonarg
        else:
            macroname = macrocolonarg[:colonpos].strip()
            macroarg = macrocolonarg[colonpos+1:].strip()
            if not macroarg:
                self.error('Argument must be of form <macroname> or <macroname>:<macroarg>.',
                           node)
            macroarg = self.expand_arg(macroarg)
            args = [self.node_of_taci('symbol', macroarg)] + args
        macro = self.get_subject(macroname, node)

        o = (self.localstack, self.macro_args)
        try:
            self.macro_stack.append([node])
            self.localstack = []
            self.macro_args = args
            self._visit_children(macro.use(args))
        finally:
            (self.localstack, self.macro_args) = o
            self.macro_stack.pop()


class Attributes:
    d_tag = 'attributes'

    def __init__(self, as_):
        self.as_ = as_

    def find_kind_aspects(self):
        return self.as_[0].find_kind_aspects()

    def get_link_name(self):
        return self.as_[0].mod.tgt_prefix+'(%s)' % ','.join([x.get_link_name() for x in self.as_])

    def get_name(self):
        return ', '.join([x.get_name() for x in self.as_])

    def get_kind(self):
        return self.as_[0].get_kind()

    def get_self_name(self):
        return self.as_[0].get_self_name()

    def find_aspects(self, tag):
        return self.as_[0].find_aspects(tag)

    def is_method(self):
        self.as_[0].is_method()


class SubDoc(Document):
    def __init__(self, parent, subject):
        self.__dict__.update(parent.__dict__)
        self.parent = parent
        self.subject = subject
        self.level = 0
        self.no_ret = 0
        self.use_self = None

    def combine_attrs_of_same_kind(self, kas):
        if len(kas) <= 1:
            return kas
        nkas = []
        attrs = []
        for ka in kas:
            t = ka.d_tag
            if t != 'attribute':
                nkas.append(ka)
                continue
            for (i, as_) in attrs:
                a = as_[0]
                if (a.src.node is ka.src.node
                        and len(a.aspects) == len(ka.aspects)):
                    as_.append(ka)
                    break
            else:
                attrs.append((len(nkas), [ka]))
                nkas.append(ka)
        for (i, as_) in attrs:
            if len(as_) > 1:
                nkas[i] = Attributes(as_)
        return nkas

    def combine_attrs_of_same_kind_and_description(self, kas):
        return self.combine_attrs_of_same_kind(kas)

    def gen_anything(self):
        self.open('strong')
        self.gen_text(' ' + self.anykind)
        self.close()

    def gen_argref(self, a):
        # a : kind
        # a = kind
        t = a.d_tag
        if t == 'arg':
            self.gen_posarg_name(a)
            self.gen_colon()
        elif t == 'key_arg':
            self.gen_keyarg_name(a)
            self.gen_assign()
        else:
            assert 0
        self.gen_ref(a.get_kind())

    def gen_arguments(self, args):
        def flatten(args):
            f = []
            for a in args:
                if a.d_tag in ('args', 'seq'):
                    f.extend(flatten(a.find_arg_aspects()))
                else:
                    f.append(a)
            return f

        def gen_sycomma():
            if sycomma:
                self.gen_text(sycomma[0])
            sycomma[:] = [', ']

        def clr_sycomma():
            sycomma[:] = []

        def gen_lbracket(b):
            if sycomma:
                self.gen_text(' ')
            self.gen_text(b)
            clr_sycomma()

        def gen_rbracket(b):
            self.gen_text(b)
            sycomma[:] = [' ']

        def gen_su(text, sup='sup'):
            self.open(sup)
            self.open('strong')
            self.gen_text(text)
            self.close()
            self.close()

        def gen_taggy(tag, args, func, brackets='[]'):
            su = 'sup'
            colon = ':'
            if tag:
                self.gen_text(' ')
                gen_su(tag+colon, su)
                sycomma[:] = []
            if len(args) != 1:
                gen_lbracket(brackets[0])
                func(args)
                gen_rbracket(brackets[1])
            else:
                clr_sycomma()
                func(args)

        def gen_or(asp, sep,
                   orparneed=False,   # Set to True if sequences needs parentheses between or
                   sup=1
                   ):

            if asp:
                if len(asp) == 1:
                    gen_arg(asp[0])
                    return
                gen_arg(asp[0], parneed=orparneed)
                for ch in asp[1:]:
                    if sup:
                        self.open('sup')
                        self.open('strong')
                    if callable(sep):
                        sep()
                    else:
                        self.gen_text(sep)
                    if sup:
                        self.close()
                        self.close()
                    clr_sycomma()
                    gen_arg(ch, parneed=orparneed)

        def gen_arg(a, parneed=0):
            t = a.d_tag
            if t in ('arg', 'key_arg'):
                gen_sycomma()
                self.gen_argref(a)
            elif t == 'alt':
                args = a.find_arg_aspects()
                gen_taggy('alt', args, lambda args: gen_or(args, ' or '))
            elif t == 'no_arg':
                self.gen_text('[]')
            elif t == 'draw':
                args = a.find_arg_aspects()
                if len(args) <= 1:
                    gen_lbracket(' [')
                    gen_arg(args[0])
                    gen_rbracket(']')
                else:
                    gen_taggy('draw', args, lambda args: gen_or(
                        args, ' , ', sup=0))
            elif t == 'optionals':
                args = a.find_arg_aspects()
                for s in args:
                    gen_lbracket(' [')
                    gen_arg(s)
                gen_rbracket(']'*len(args))

            elif t == 'superkind':
                gen_sycomma()
                self.gen_localname(a)
            elif t in ('seq', ):
                args = a.find_arg_aspects()
                gen_taggy('seq', args, lambda args: gen_or(args, ' , ', sup=0))
            elif t in ('args', 'seq'):
                gen_args(a.find_arg_aspects(), parneed)
            elif t == 'repeat':
                gen_taggy(a.get_arg(), a.find_arg_aspects(), gen_args)

            else:
                assert 0

        def gen_args(args, parneed=0):
            args = flatten(args)

            def ga(args):
                for a in args:
                    gen_arg(a)
            if parneed and len(args) > 1:
                #gen_taggy('', args, ga, brackets='<>')
                gen_taggy('1', args, ga)
            else:
                ga(args)
        sycomma = []
        gen_args(args)

    def gen_assign(self):
        self.open('strong')
        self.gen_char('nbsp')
        self.gen_text('=')
        self.gen_char('nbsp')
        self.close()

    def gen_attribute_def(self, a):
        def gen_dt(do_kind=0):
            if dt_done:
                return
            dt_done.append(1)
            self.open('dd')
            if not define_done:
                link_name = self.get_link_name(a)
                self.open('define', link_name)
            if s:
                self.out.append(s)
            if s:
                self.open('code')
                self.gen_text('.')
                self.close()
            self.open('strong')
            self.open('big')
            self.gen_attribute_name(a)
            self.close()
            self.close()
            if not define_done:
                self.close()
                define_done.append(1)

            if do_kind or not kas:
                if len(kas) == 1 and kas[0].d_tag == 'mapping':
                    self.gen_mapping_kind(kas[0], 1)
                    self.open('dl')
                    self.gen_mapping_description(kas[0])
                    self.close()
                else:
                    self.gen_colon()
                    self.gen_def(a.get_kind())
                kind_done.append(1)
            self.close('dd')

        def gen_afterkind(a):
            dt_done.pop()
            gen_dt(1)
            kind_done.append(1)

        define_done = []
        dt_done = []
        kind_done = []
        kas = a.find_kind_aspects()
        s = self.get_self_node(a)

        self.level += 1
        for d in a.find_aspects('*'):
            t = d.d_tag
            if t == 'description':
                gen_dt(0)
                self.open('dd')
                self.open('dl')
                self.gen_description_def(d)
                self.close()
                self.close()
                continue
            if d in kas:
                if dt_done or kind_done:
                    pass
                if not dt_done:
                    gen_dt(do_kind=1)
                elif not kind_done:
                    gen_afterkind(a)
            elif t == 'self':
                pass
            else:
                assert 0

        if not dt_done:
            gen_dt(do_kind=1)
        self.level -= 1

    def gen_attribute_name(self, a):
        self.gen_name(a)

    def gen_attribute_ref(self, a):

        s = self.get_self_node(a)
        if s:
            self.out.append(s)
        self.open('big')
        if s:
            self.open('code')
            self.gen_text('.')
            self.close()

        link_name = self.get_link_name(a)
        self.open('link_to', link_name)
        self.gen_attribute_name(a)
        self.close()
        self.close()

        kas = a.find_kind_aspects()

        if len(kas) == 1 and kas[0].d_tag == 'mapping':
            self.gen_mapping_kind(kas[0])
        else:
            self.gen_colon()
            self.gen_ref(a.get_kind())

    def gen_attributes_def(self, a):
        self.gen_attribute_def(a)

    def gen_attributes_ref(self, a):
        self.gen_attribute_ref(a)

    def gen_colon(self):
        self.open('spc_colonkind')
        self.close()

    def gen_comment_def(self, d):
        pass

    def gen_comment_ref(self, d):
        pass

    def gen_condition_def(self, cond):
        self.open('dt')
        self.gen_condition_ref(cond, 1)
        self.close()
        self.level += 1

        for d in cond.find_aspects('*'):
            t = d.d_tag
            if t == 'description':
                self.gen_description_dd(d)
            elif t == 'python_code':
                self.open('dd')
                self.open('dl')
                self.open('dt')
                self.open('strong')
                self.gen_text('Python code: ')
                self.close()
                self.open('code')
                self.gen_text(d.src.node.arg.strip())
                self.close()
                self.close()
                ctx = d.find_aspects('in context')
                if ctx:
                    self.open('dd')
                    self.open('dl')
                    for ct in ctx:
                        self.open('dt')
                        self.open('strong')
                        self.gen_text('in context: ')
                        self.close()
                        self.open('code')
                        self.gen_text(ct.src.node.arg.strip())
                        self.close()
                        self.close()
                    self.close()
                    self.close()
                self.close('dl')
                self.close('dd')

        self.level -= 1

    def gen_condition_ref(self, cond, define=0):
        link_name = self.get_link_name(cond)
        if define:
            self.open('define', link_name)
        else:
            self.open('link_to', link_name)
        self.open('strong')
        self.open('big')
        self.gen_text(cond.get_def_name())
        self.close()
        self.close()
        self.close()  # define

        self.gen_text('(')
        self.gen_text(', '.join(cond.get_arg_names()))
        self.gen_text(')')

    def gen_constructor_def(self, c):
        self.open('define', self.get_link_name(c))
        self.close()
        for cc in c.args:
            self.open('dt')
            self.gen_link_to(cc)
            self.close()

        for d in c.find_aspects('description'):
            self.gen_description_dd(d)

    def gen_constructor_ref(self, c):
        self.gen_self(c)
        self.gen_text(' = ')
        self.gen_ref(c.args[0])

    def gen_constructor_descriptions(self, li):
        self.gen_constructor_syn(li, 1)

    def gen_constructor_syn(self, li, desc=0):

        ccs = []
        descs = []
        cdccs = []
        for c in li:
            ds = c.find_aspects('description')
            descs.extend(ds)
            ccs.extend(c.args)
            cdccs.append((c, ds, c.args))

        if desc and not descs:
            return

        self.open('dt')
        if desc:
            self.open('h2')
        else:
            self.open('big')
            self.open('strong')
        if descs:
            if desc:
                self.open('define', li[0].get_link_name())
            else:
                self.open('link_to', li[0].get_link_name())
        hd = 'Constructors'
        if len(ccs) == 1:
            hd = hd.rstrip('s')
        self.gen_text(hd)
        if descs:
            self.close()

        self.close()
        if not desc:
            self.close()
        self.close('dt')
        self.open('dd')
        self.open('dl')

        for c, ds, ccs in cdccs:
            for cc in ccs:

                self.open('block')
                self.gen_ref(cc.env)
                conselfnode = self.close(get=1)

                self.open('dt')

                self.use_self = conselfnode
                self.gen_ref(cc)
                self.use_self = None

                self.close('dt')

            if desc:
                for d in ds:
                    self.gen_description_dd(d)
        self.close('dl')
        self.close('dd')

    def gen_def(self, a):
        getattr(self, 'gen_%s_def' % a.d_tag)(a)

    def gen_delitem_def(self, op):
        self.open('dt')
        self.gen_delitem_ref(op, 1)
        self.close()
        self.gen_mapping_description(op)

    def gen_delitem_ref(self, op, subdescript=0):
        link_name = self.get_link_name(op)

        if subdescript:
            self.open('define', link_name)
            self.open('strong')
            self.open('big')
            self.gen_text('del ')
            self.close()
            self.close()
            self.close()
        else:
            self.open('link_to', link_name)
            self.gen_text('del ')
            self.close()

        self.gen_self(op)
        args = op.get_arguments()
        self.gen_text('[')
        self.gen_arguments(args)
        self.gen_text(']')

    def gen_description(self, k):
        ats = k.find_aspects('*')
        ats = self.combine_attrs_of_same_kind_and_description(ats)
        self.gen_descriptions(ats)

    def gen_description_dd(self, d):
        self.open('dd')
        d.gen_doc(self)
        self.close()

    def gen_description_def(self, d):
        self.gen_description_dd(d)

    def gen_description_descriptions(self, li):
        self.gen_outer_dt('Description')
        for d in li:
            self.gen_description_dd(d)

    def gen_description_ref(self, d):
        pass

    def gen_description_syn(self, li):
        pass

    def gen_descriptions(self, ats, use_attr_header=1):
        if not ats:
            return
        tab = self.sortup_aspects(ats)

        for typ, li in tab:
            try:
                try:
                    gen_desc = getattr(self, 'gen_%s_descriptions' % typ)
                except AttributeError:
                    hd = typ
                    if (len(li) > 1):
                        hd = hd + 's'
                    hd = hd.capitalize().replace('_', ' ')
                    self.gen_outer_dt(hd)
                    for a in li:
                        self.gen_def(a)
                else:
                    gen_desc(li)
            except self.mod.ReportedError:
                pass

    def gen_either_def(self, k):
        self.gen_either_ref(k)

    def gen_either_ref(self, k):
        self.open('strong')
        self.open('sup')
        self.gen_text(' either:')
        self.close()
        self.close()
        self.gen_text(self.eitherbrackets[0])
        kas = k.get_alt_kinds()
        self.gen_ref(kas[0])
        for ka in kas[1:]:
            self.open('strong')
            self.open('sup')
            self.gen_text(' or ')
            self.close()
            self.close()
            self.gen_ref(ka)
        self.gen_text(self.eitherbrackets[1])

    def gen_example_descriptions(self, egs):
        e = 'Example'
        if len(egs) > 1:
            e += 's'
        self.gen_outer_dt(e)
        for eg in egs:
            self.open('dd')
            self.open('pre')
            ct = eg.get_ctx_text()
            if ct:
                if not ct.endswith('\n'):
                    ct += '\n'
                self.gen_text(ct)
            et = eg.get_ex_text()
            self.open('strong')
            self.gen_text('return ')
            self.gen_text(eg.get_ex_text())
            self.close()
            self.close()
            self.close()
            continue

            self.open('dd')
            self.open('code')
            self.gen_text(eg.get_ex_text())
            ct = eg.get_ctx_text()
            self.close()

            if ct:
                self.open('em')
                self.gen_text(' # in context:')
                self.close()

            self.close()
            if ct:
                if '\n' in ct:
                    self.open('pre')
                    self.gen_text(ct)
                    self.close()
                else:
                    self.open('dd')
                    self.open('code')
                    self.gen_text(ct)
                    self.close()
                    self.close()

                return

                self.open('dd')
                self.open('dl')
                self.open('dt')
                self.open('strong')
                self.gen_text('In context')
                self.close()
                self.close()
                self.open('dd')
                if '\n' in ct:
                    self.open('pre')
                else:
                    self.open('code')
                self.gen_text(ct)
                self.close()
                self.close()
                self.close()
                self.close('dd')

    def gen_example_syn(self, eg):
        pass

    def gen_function_operator_def(self, op):
        self.open('dd')
        self.gen_function_operator_ref(op, 1)
        self.open('dl')
        self.gen_mapping_description(op)
        self.close()
        self.close()

    def gen_function_operator_ref(self, op, subdescript=0):
        link_name = self.get_link_name(op)

        if not subdescript:
            self.open('link_to', link_name)
        else:
            self.open('define', link_name)
        self.open('big')
        self.open('strong')
        self.gen_text(op.src.node.arg.strip())
        self.close()
        self.close()
        self.close()
        self.gen_text('(')
        self.gen_self(op)

        for a in op.get_arguments():
            t = a.d_tag
            if t == 'arg':
                self.gen_argref(a)
            else:
                assert 0

        self.gen_text(')')

        self.gen_returns(op, subdescript)

    def gen_header(self, m):
        link_name = self.get_link_name(m)
        self.open('define', link_name)
        self.open('h1')
        self.gen_text(m.get_name())
        self.close()
        self.close()

    def gen_inplace_operator_def(self, op):
        self.gen_operator_def(op)

    def gen_inplace_operator_ref(self, op, subdescript=0):
        self.gen_operator_ref(op, subdescript)

    def gen_keyarg_name(self, a):
        self.open('code')
        self.gen_name(a)
        self.close()

    def gen_kind_aspects(self, ats, defi):
        if not ats:
            self.gen_anything()
            return
        self.gen_text(self.kindbrackets[0])
        self.open('dl')
        for a in ats:
            if a.d_tag in ('kind',) and not a.is_synthetic:
                self.open('dd')
                self.open('em')
                self.gen_text('Subkind of: ')
                self.close()
                if defi:
                    self.gen_def(a)
                else:
                    self.gen_ref(a)
                self.close()
            else:
                if defi:
                    self.open('dd')
                    self.gen_def(a)
                    self.close()
                else:
                    self.open('dd')
                    self.gen_ref(a)
                    self.close()
        self.open('dd')
        self.gen_text(self.kindbrackets[1])
        self.close()
        self.close()

    def gen_kind_def(self, k):
        kas = k.find_kind_aspects()
        self.gen_kind_refodef(k, 1)

    def gen_kind_of_def(self, k):
        self.gen_kind_of_ref(k)

    def gen_kind_of_ref(self, k):
        kas = k.find_kind_aspects()
        if len(kas) == 1:
            self.gen_ref(kas[0])
        else:
            assert 0  # to be tested

    def gen_kind_ref(self, k, defi=0):
        self.gen_kind_refodef(k, 0)

    def gen_kind_refodef(self, k, defi=0):
        if not k.is_synthetic:
            self.gen_localname(k)
            return

        kas = k.find_kind_aspects()
        kas = self.combine_attrs_of_same_kind(kas)
        self.gen_kind_aspects(kas, defi)

    def gen_man_page(self, m):
        self.gen_header(m)
        self.open('dl')
        self.gen_Name(m)
        self.gen_synopsis(m)
        self.gen_description(m)
        self.close()

    def gen_mapping_def(self, a):
        self.gen_mapping_tag(a, 1)
        self.gen_mapping_kind(a, 1, 1)

        self.open('dl')

        self.gen_mapping_description(a)

        self.close()

    def gen_mapping_description(self, m):
        def find_named_args(m):
            na = []
            asp = m.find_arg_aspects()
            for a in asp:
                t = a.d_tag
                if t in ('arg', 'key_arg'):
                    na.append(a)
                else:
                    na.extend(find_named_args(a))
            return na

        def gen_arguments_descriptions(m):
            na = find_named_args(m)
            if not na:
                return
            namedesc = {}
            ada = []
            for a in na:
                t = a.d_tag
                if t in ('arg', 'key_arg'):
                    da = a.find_aspects('description')
                    ada.append((a, da))
                    if da:
                        namedesc[(t, a.get_name())] = 1
                else:
                    assert 0

            if namedesc:
                label = 'Argument'
                if len(namedesc) > 1:
                    label += 's'
                self.gen_outer_dt(label)
                self.open('dd')
                self.open('dl')
                for a, da in ada:
                    t = a.d_tag
                    if not da and (t, a.get_name()) in namedesc:
                        # This arg is considered to be described elsewhere, Notes Aug 10 2005.
                        # This is a bit sublte, may do for now...
                        continue
                    self.open('dt')
                    self.gen_argref(a)
                    self.close()
                    for d in da:
                        self.gen_description_dd(d)
                self.close()
                self.close('dd')

        def gen_condition_ref(a):
            if a.is_not:
                self.gen_text('not ')

            d = a.get_definition()

            if d is None:
                self.gen_text(a.cond_doc_name)
            else:
                self.open('link_to', self.get_link_name(d))
                self.gen_text(a.cond_doc_name)
                self.close()

            if a.arg_names:
                self.gen_text('(')
                # self.open('var')
                comma = 0
                for an in a.arg_names:
                    if comma:
                        self.gen_text(', ')
                    comma = 1
                    if an.startswith('<') and an.endswith('>'):
                        self.open('em')
                        self.gen_text(an[1:-1])
                        self.close()
                    else:
                        # I think it normally is clearer to not have
                        # slanted argument names
                        self.gen_text(an)
                # self.close()
                self.gen_text(')')

        def gen_condition_desc(a):
            ds = a.find_aspects('description')
            for d in ds:
                self.gen_description_dd(d)

        def gen_conditions_description(m, asp='precondition'):
            self.open('dd')
            self.open('dl')
            pres = m.find_aspects(asp)
            if pres:
                self.open('dt')
                self.open('strong')
                hd = asp.capitalize()
                if len(pres) > 1:
                    hd = hd + 's'
                self.gen_text(hd)
                self.close()
                self.close()
                self.open('dd')
                self.open('dl')
                for pre in pres:
                    self.open('dt')
                    gen_condition_ref(pre)
                    self.close()
                    gen_condition_desc(pre)
                self.close()
                self.close()
            self.close()
            self.close()

        def gen_description(m):
            asp = m.find_aspects()
            args_described = 0
            pre_described = 0
            post_described = 0
            last_t = None
            last_h = None
            for a in asp:
                t = a.d_tag
                if t == 'description':
                    self.gen_description_dd(a)
                elif t == 'returns':
                    rds = a.find_aspects('description')
                    if rds:
                        self.open('dd')
                        self.open('dl')

                        self.open('dt')
                        self.open('strong')
                        self.gen_text('Returns ')
                        self.close()
                        rds[0].gen_doc(self)
                        rds = rds[1:]
                        self.close('dt')

                        for rd in rds:
                            self.gen_description_dd(rd)
                        self.close('dl')
                        self.close('dd')

                elif t in ('precondition', ):
                    if not pre_described:
                        gen_conditions_description(m, t)
                        pre_described = 1
                elif t in ('postcondition',):
                    if not post_described:
                        gen_conditions_description(m, t)
                        post_described = 1

                elif t in ('equation',):
                    self.open('dd')
                    self.open('dl')
                    self.open('dt')
                    self.open('strong')
                    self.gen_text('Equation')
                    self.close()
                    self.close()
                    self.open('dd')
                    self.open('dl')
                    eqconds_done = 0
                    for asp in a.find_aspects('*'):
                        t = asp.d_tag
                        if t == 'description':
                            self.gen_description_dd(asp)
                        elif not eqconds_done:
                            eqconds_done = 1
                            self.open('dt')
                            cs = a.find_aspects(
                                'precondition', 'postcondition')
                            for cr in cs:
                                if cr.d_tag == 'precondition':
                                    self.open('strong')
                                    self.open('sup')
                                    self.gen_text('pre:')
                                    self.close()
                                    self.close()
                                elif cr.d_tag == 'postcondition':
                                    self.open('strong')
                                    self.open('sup')
                                    self.gen_text('post:')
                                    self.close()
                                    self.close()
                                gen_condition_ref(cr)
                                if cr is not cs[-1]:
                                    self.open('big')
                                    self.gen_text(' == ')
                                    self.close()
                            self.close()
                    self.close()
                    self.close()
                    self.close()
                    self.close()

                else:
                    if not args_described:
                        self.open('dd')
                        self.open('dl')
                        gen_arguments_descriptions(m)
                        args_described = 1
                        self.close()
                        self.close()
                    else:
                        t = last_t
                last_t = t

        self.level += 1
        gen_description(m)
        self.level -= 1

    def gen_getitem_def(self, op):
        self.open('dt')
        self.gen_getitem_ref(op, 1)
        self.close()
        self.gen_mapping_description(op)

    def gen_getitem_ref(self, op, subdescript=0):
        link_name = self.get_link_name(op)

        if subdescript:
            self.open('define', link_name)

        if subdescript:
            self.close()
        else:
            self.open('link_to', link_name)
            self.gen_text('# ')
            self.close()

        self.gen_self(op)
        self.gen_index(op)
        self.gen_returns(op, subdescript)

    def gen_index(self, op):
        self.gen_text('[')
        self.gen_arguments(op.get_arguments())
        self.gen_text(']')

    def gen_link_to_operator(self, link_name):
        self.open('to_html_only')
        self.open('link_to', link_name)
        self.gen_text('# ')
        self.close()
        self.close()

    def gen_mapping_doc(self, m):
        def gen_synopsis(m):
            self.gen_outer_dt('Synopsis')
            self.open('dd')
            self.gen_mapping_ref(m)
            self.close()

        self.gen_header(m)
        self.open('dl')
        self.gen_Name(m)
        gen_synopsis(m)
        self.gen_mapping_description(m)
        self.close()

    def gen_mapping_kind(self, m, subdescript=0, withself=0):
        if withself and self.get_self_node(m):
            self.gen_self(m)
        self.gen_text('(')
        self.gen_arguments(m.get_arguments())
        self.gen_text(')')
        self.gen_returns(m, subdescript)

    def gen_mapping_ref(self, m):
        self.gen_mapping_tag(m)
        self.gen_mapping_kind(m, 0, 1)

    def gen_mapping_tag(self, a, subdescript=0):
        link_name = self.get_link_name(a)
        if not subdescript:
            self.open('link_to', link_name)
        else:
            self.open('define', link_name)

        self.open('strong')
        self.gen_text('callable')
        self.close()
        self.close()
        self.gen_colon()

    def gen_Name(self, m):
        self.gen_outer_dt('Name')
        self.open('dd')
        self.open('h2')
        self.gen_text(m.get_Name())
        self.close()
        self.close()

    def gen_name(self, a):
        self.gen_text(a.get_name())

    def gen_operator_def(self, op):
        self.open('dd')
        self.gen_operator_ref(op, 1)
        self.open('dl')
        self.gen_mapping_description(op)
        self.close()
        self.close()

    def gen_operator_ref(self, op, subdescript=0):
        # self.gen_text('(')

        link_name = self.get_link_name(op)

        if subdescript:
            self.open('define', link_name)

        if subdescript:
            self.close()
        else:
            self.gen_link_to_operator(link_name)

        self.gen_self(op)
        self.gen_text(' ')
        self.open('big')
        self.open('strong')
        self.gen_text(op.src.node.arg.strip())
        self.close()
        self.close()

        for a in op.get_arguments():
            self.gen_text(' ')
            t = a.d_tag
            if t == 'arg':
                self.gen_argref(a)
            else:
                assert 0

        # self.gen_text(')')

        self.gen_returns(op, subdescript)

    def gen_outer_dt(self, text):
        # Synopsis, Description etc

        self.open('dt')
        if not self.level:
            self.open('h2')
        else:
            self.open('strong')
            if self.level == 1:
                self.open('big')
        if callable(text):
            text()
        else:
            self.gen_text(text)
        if self.level == 1:
            self.close('big')
        self.close()
        self.close()

    def gen_posarg_name(self, a):
        self.open('var')
        self.gen_name(a)
        self.close()

    def gen_ref(self, k):
        t = k.d_tag
        getattr(self, 'gen_%s_ref' % t)(k)

    def gen_returns(self, m, subdescript):
        if self.no_ret:
            return
        ars = m.find_aspects('returns')
        if not ars:
            return
        self.open('spc_mapsto')
        self.close()
        rk = m.get_return_kind()
        if subdescript:
            t = rk.d_tag
            if t in ('mapping',):
                self.gen_kind_aspects([rk], 1)
            else:
                self.gen_def(rk)
        else:
            self.gen_ref(rk)

    def gen_reverse_operator_def(self, op):
        self.open('dd')
        self.gen_reverse_operator_ref(op, 1)
        self.open('dl')
        self.gen_mapping_description(op)
        self.close()
        self.close()

    def gen_reverse_operator_ref(self, op, subdescript=0):
        # self.gen_text('(')

        link_name = self.get_link_name(op)

        if subdescript:
            self.open('define', link_name)
            self.close()
        else:
            self.gen_link_to_operator(link_name)

        for a in op.get_arguments():
            t = a.d_tag
            if t == 'arg':
                self.gen_argref(a)
            else:
                assert 0

        self.open('big')
        self.gen_text(' ')

        self.open('strong')
        self.gen_text(op.src.node.arg.strip())
        self.close()

        self.gen_text(' ')
        self.close()

        self.gen_self(op)

        # self.gen_text(')')

        self.gen_returns(op, subdescript)

    def gen_self(self, op):
        s = self.get_self_node(op)
        if not s:
            self.open('em')
            self.gen_text('self')
            self.close()
        else:
            self.out.append(s)

    def gen_self_def(self, k):
        pass

    def gen_self_descriptions(self, li):
        pass

    def gen_self_ref(self, k):
        self.open('h3')
        self.gen_text('For any object ')
        self.open('var')
        self.gen_text(k.src.node.arg.strip())
        self.close()
        self.gen_text(' of kind ')
        self.gen_localname(k.env)
        self.gen_text(':')
        self.close()

    def gen_self_syn(self, li):
        for k in li:
            self.open('dt')
            self.gen_self_ref(k)
            self.close()

    def gen_setitem_def(self, op):
        self.open('dt')
        self.gen_setitem_ref(op, 1)
        self.close()
        self.gen_mapping_description(op)

    def gen_setitem_ref(self, op, subdescript=0):
        link_name = self.get_link_name(op)

        if subdescript:
            self.open('define', link_name)

        if subdescript:
            self.close()
        else:
            self.gen_link_to_operator(link_name)

        self.gen_self(op)
        args = op.get_arguments()
        self.gen_text('[')
        self.gen_arguments(args[:-1])
        self.gen_text(']')

        self.open('strong')
        self.open('big')
        self.gen_text(' = ')
        self.close()
        self.close()

        self.gen_arguments(args[-1:])

    def gen_subkind_of_def(self, k):
        ds = k.find_aspects('description')
        if not ds:
            return
        self.open('dt')
        self.gen_subkind_of_ref(k, 1)
        self.close()
        self.level += 1
        for d in ds:
            self.gen_description_dd(d)

        self.level -= 1

    def gen_subkind_of_descriptions(self, li):
        for a in li:
            self.gen_outer_dt(lambda: self.gen_subkind_of_ref(a, 1))
            for d in a.find_aspects('description'):
                self.gen_description_dd(d)

    def gen_subkind_of_ref(self, k, subdescript=0):
        link_name = self.get_link_name(k)
        if subdescript:
            self.open('define', link_name)
        else:
            self.open('link_to', link_name)
        self.gen_text('Subkind of')
        self.close()
        self.gen_colon()

        comma = 0
        for a in k.args:
            if comma:
                self.gen_text(', ')
            comma = 1
            self.gen_localname(a)

    def gen_subkind_of_syn(self, li):
        for a in li:
            self.gen_outer_dt(lambda: self.gen_subkind_of_ref(a, 0))

    def gen_superkind_of_ref(self, k):
        kas = k.find_kind_aspects()
        if len(kas) == 1:
            self.gen_ref(kas[0])
        else:
            assert 0  # to be tested

    def gen_superkind_ref(self, k):
        self.gen_localname(k)

    def gen_synopsis(self, m):
        ats = m.find_aspects('*')
        ats = self.combine_attrs_of_same_kind(ats)
        tab = self.sortup_aspects(ats, synopsis=1)
        if tab:
            self.gen_outer_dt('Synopsis')
            self.open('dd')
            self.open('dl')
            self.level += 1
            for typ, li in tab:
                try:
                    gen_syn = getattr(self, 'gen_%s_syn' % typ)
                except AttributeError:
                    name = typ.capitalize().replace('_', ' ')
                    if len(li) != 1:
                        name = name+'s'
                    self.gen_outer_dt(name)
                    for a in li:
                        self.open('dd')
                        self.gen_ref(a)
                        self.close()
                else:
                    gen_syn(li)

            self.level -= 1
            self.close()
            self.close()

    def get_self_node(self, a):
        sn = self.use_self
        if sn is None:
            sn = a.get_self_name()
            if sn is not None:
                sn = self.node_of_taci('text', sn)
        return sn

    def sortup_aspects(self, ats, synopsis=0):
        # Get aspects sorted up in the same order for synopsis and main description

        order = ('description', 'subkind_of', 'constructor', 'self', 'method',
                 'operator', 'mapping', 'attribute', 'condition', 'example', )
        tab = {}

        def gen_outer(what):
            assert what in order
            if what not in tab:
                tab[what] = []
            tab[what].append(a)

        for a in ats:
            t = a.d_tag
            if t == 'comment' or t == 'description' and synopsis:
                pass
            elif t in ('attribute', 'attributes', 'either'):
                if a.is_method():
                    gen_outer('method')
                else:
                    gen_outer('attribute')
            elif a.d_type == 'operator' or t in ('getitem', 'delitem', 'setitem'):
                gen_outer('operator')
            else:
                gen_outer(t)

        otab = []
        for typ in order:
            if not typ in tab:
                continue
            li = tab[typ]
            otab.append((typ, li))
        return otab


class _GLUECLAMP_:
    _imports_ = (
        '_parent.FileIO:IO',
        '_parent.Gsml:node_of_gsml',
        '_parent:Html',
        '_parent:Latex',
        '_parent.Main:ReportedError',
        '_parent.SpecNodes:node_of_string',
        '_parent.SpecNodes:node_of_taci',
        '_parent.SpecNodes:node_aliases',
        '_parent:Tester',
        '_parent:XHTML'
    )

    # Map from output mode spelling in output directive to handler name
    # -- Why should we need to map anyway?
    # or should we just say they are case insensitive?
    # If they are case insenitive, we need to map here.
    # I hereby decide they are case insensitive!

    output_handlers = {'html': 'Html', 'xhtml': 'XHTML',
                       'latex': 'Latex', 'tester': 'Tester'}

    # Brackets to use when rendering kind references
    kindbrackets = ('[', ']')
    #kindbrackets = ('{','\n}')
    kindbrackets = (' (', ' )')
    #kindbrackets = '  '

    # Brackets to use when rendering either kinds

    eitherbrackets = '[]'

    # Text to use to render any kind
    anykind = 'anything'

    def document(self, node, env):
        return Document(self, node, env)

    def _test_main_(self):
        class TestSubject:
            def __init__(self, mod, name):
                self.mod = mod
                self.name = name
                self.node_of_string = mod._parent.SpecNodes.node_of_string

            def use(self, args):
                name = self.name
                if name == 'A':
                    return self.node_of_string("""\
.text: hello
""")

                elif name == 'reverse':
                    args.reverse()
                    return self.mod.node_of_taci('string', '', args, 0)
                else:
                    assert 0

        class TestEnv:
            def __init__(self, mod):
                self.mod = mod

            def get_descr_by_name(self, name, node):
                return TestSubject(self.mod, name)

        env = TestEnv(self)
        x = """
.h1: Description of subject
..em
...use: A
.h1: Reversing arguments
.use: reverse
..text: A
..text: B
..text: C
"""
        node = self._parent.SpecNodes.node_of_string(x)
        y = self.document(node, env)
        r = y.get_result()
        # FIXME: Assert equals to something?
        print(r)
        h = self._parent.Html.node2text(r)
        assert h == '''
<h1>Description of subject<em>
 hello
</em></h1>
<h1>Reversing arguments</h1>
 C
 B A'''