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File Name : SpecNodes.py

##
# Specification entity object
#
# Collects information about a particular system entity or aspect.
#
# The entity is of a general kind
# It is defined by the particular aspects defined for it
# The aspects must be 'compatible', which can be relatively checked.
# The specobject is used for:
# * generating tests
# * generating docs
# * generating help
#   * by creating docstrings
#   * by providing interactive help
#
# For test generation, it will delegate to test implementators.
# For doc generation, it will delegate to doc implementators.
#
# The functionality needed here is therefore limited.
#
#  name
#  aspects
#
# There is one predefine root
# - should we call it Universe?
#
# The name can be full, a dotted name, or the short, last part.
#
# The name is treated as an aspect.
#
# Each aspect definition has a primary kind

# Aspect kinds

from guppy.gsl.Exceptions import *

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

##
# Specification environment
# Collects specifications from several files
# Maps names to specification objects

class SpecEnv:
    def __init__(self, mod):
        self.mod = mod
        self.unknown_nodes = []
        self.files = []

def visit_default(self, node):
        print('add_unknown', node.tag)
        self.unknown_nodes.append(node)

def visit_file(self, node):
        print('visit_file')
        file = FileEnv(self, node)
        self.files.append(file)

def get_predefined_subjects(self, env):
        return (GuppyWorld(env),)

class FileEnv:
    def __init__(self, env, node):
        mod = env.mod
        self.mod = mod
        self.name = self.filename = node.arg
        self.subjects = {}
        for s in env.get_predefined_subjects(self):
            self.subjects[s.name] = s

file = Subject(self, node, self.name)

node.children_accept(file)

def visit_aspects_of(self, node):
        name = node.arg
        subject = self.find_subject(node, name)
        subject.add_aspects(node)

def def_subject(self, node, name, subject):
        if name in self.subjects:
            self.error_node(node, 'Redefinition of %r.' % name)
            self.error_node(self.subjects[name].node,
                            'Previous definition of %r.' % name)
        else:
            self.subjects[name] = subject

def error_node(self, node, msg, exception=None):
        index = node.index
        lineno = index + 1
        print('%s:%s:' % (self.filename, lineno))
        print('    %r' % self.get_line(index))
        print('    %s' % msg)
        print()

def find_subject(self, node, name):
        subject = self.subjects.get(name)
        if subject is None:
            self.error_node(node, 'No such subject: %r.' % name)
        return subject

def get_line(self, index):
        try:
            with open(self.filename) as f:
                text = list(f.readlines())[index].rstrip()
        except Exception:
            text = None
        return text

def get_subject(self, name):
        subject = self.subjects.get(name)
        if subject is None:
            subject = self.subjects[name] = Subject(self, name)
        return subject

def get_aspect_subject(self, env, node):
        name = env.name+'::'+node.tag
        return self.get_subject(name)

class Subject:
    def __init__(self, file, node, name):
        self.file = file
        self.node = node
        self.name = name
        self.aspects = []

def visit_default(self, node):
        of = node.tag.endswith('_of')
        name = node.arg
        define = name.startswith(':')
        if define:
            if of:

self.file.error_node(node, "Both 'of' and '::'.")
            name = name[1:].strip()
        if of:
            ofsubject = self.file.find_subject(node, name)
            subject = self.new_subject_of(node, ofsubject)
        else:
            subject = Subject(self.file, node, name)
            if define:
                self.file.def_subject(node, name, subject)
        self.aspects.append(subject)
        node.children_accept(subject)

def new_subject_of(self, node, of):
        tag = node.tag
        if tag == 'aspects_of':
            return AspectsOf(self.file, node, of)
        else:
            return SubjectOf(self.file, node, of)

class AspectsOf(Subject):
    def __init__(self, file, node, of):
        self.node = node
        self.of = of
        self.aspects = []

def visit_default(self, node):
        self.of.visit_default(node)

class SubjectOf(Subject):
    def __init__(self, file, node, of):
        self.node = node
        self.of = of
        self.aspects = []

class GuppyWorld(Subject):
    def __init__(self, env):
        self.file = env
        self.name = "Guppy World"
        self.node = None
        self.aspects = []

##
# A node represented with argument splitted in components of the form:
# .tag: arg
# text
# ..child
# ...
# ..child
# ...
#
# @param tag the text of the first line before the colon
# @param arg the text of the first line after the colon (stripped)
# @param text the text after the the first line before the first children
# @param children the child nodes
# @param index line index
# @param src describes the source

class SpecNode(object):
    __slots__ = 'tag', 'arg', 'children', 'index', 'src'

def __init__(self, tag, arg, children=(), index=0, src=None):
        self.tag = tag
        self.arg = arg
        self.children = tuple(children)
        self.index = index
        self.src = src

def __repr__(self):
        return '%s(%r,%r,%r)' % (
            self.__class__.__name__, self.tag, self.arg, self.children)

def __str__(self):
        return '%s(%r,%r,%s)' % (
            self.__class__.__name__, self.tag, self.arg,
            '(%s)' % (','.join([str(c) for c in self.children])))

def arg_accept(self, visitor, prefix='visit_'):
        if self.arg:
            node = SpecNode('text', self.arg, (), self.index)
            node.accept(visitor, prefix)
        self.children_accept(visitor, prefix)

def copy(self, tag=None, arg=None, children=None, index=None, src=None):
        if tag is None:
            tag = self.tag
        if arg is None:
            arg = self.arg
        if children is None:
            children = self.children
        if index is None:
            index = self.index
        if src is None:
            src = self.src
        return self.__class__(tag, arg, children, index, src)

def children_accept(self, visitor, prefix='visit_'):
        for c in self.children:
            c.accept(visitor, prefix)

def accept(self, visitor, prefix='visit_'):
        m = getattr(visitor, (prefix+self.tag), None)
        if m is None:
            m = getattr(visitor, (prefix+'default'), None)
            if m is None:
                msg = 'accept: unknown: %r, %r  in %r' % (
                    prefix, self.tag, visitor)
                print(msg)
                raise ValueError(msg)
                return
        m(self)

def error(self, msg, node=None):
        if node is None:
            node = self
        node.src.error(msg, node)

def get_text(self):
        " Get the total text of all text children, joined with and ended with '\n' "
        text = []
        for c in self.children:
            if c.tag == 'text':
                text.append(c.arg)
                if not c.arg.endswith('\n'):
                    text.append('\n')
        return ''.join(text)

def get_arg(self):
        arg = self.arg.strip()
        if arg.startswith(':'):
            arg = arg[1:].strip()
        return arg

def get_arglist(self):
        arg = self.arg
        if arg.startswith(':'):
            arg = arg[1:]
        names = [x.strip() for x in arg.split(',')]
        if names == ['']:
            names = []
        return names

def get_arg_children(self):
        if self.arg:
            children = [SpecNode('text', self.arg, (), self.index, self.src)]
            children.extend(self.children)
        else:
            children = self.children
        return children

def get_arg_rest(self, nostrip=0):
        arg = self.arg
        if not nostrip:
            arg = arg.strip()
        return arg, self.children

def get_arg_norest(self):
        ''' Get the arg as by self.arg,
            but make sure there are no more children.
            '''
        if self.children:
            raise SyntaxError('No children nodes expected in node: %s' % self)
        return self.arg.strip()

def get_namearg(self):
        ''' Get the argument in the form of a name
            It is the argument stripped.
            And not allowed to contain : or , or new line.
        '''
        name = self.arg.strip()
        if '\n' in name or ':' in name or ',' in name:
            raise SyntaxError('Invalid name: %r' % name)
        return name

def split_attrs(self, tag=None, attrdict=False):
        if tag is None:
            tag = self.tag
        if attrdict:
            attrs = {}

def addattr(tag, attr, node):
                if tag in attrs:
                    node.error('Duplicate attribute: %s' % attr)
                else:
                    attrs[tag] = attr
        else:
            attrs = []

def addattr(tag, attr, node):
                attrs.append((tag, attr))
        children = []
        for ch in self.children:
            if ch.tag == "with":
                for opt in ch.children:
                    if opt.arg:
                        arg = opt.arg
                    else:
                        self.error('Bad attribute, no argument.', opt)
                    if opt.children:
                        self.error(
                            'Expected no children to attribute.', opt.children[0])
                    if opt.arg:
                        addattr(opt.tag, arg, opt)
            elif ch.tag[-1:] == '=':
                addattr(ch.tag[:-1], ch.arg, ch)
            else:
                children.append(ch)
        if len(children) == len(self.children):
            node = self
        else:
            node = self.__class__(
                tag, self.arg, children, self.index, self.src)
        return node, attrs

class Source:
    def __init__(self, name, lines=None, string=None, nostrip=0, debug=0, max_errors=10):
        self.filename = name
        self.lines = lines
        self.string = string
        self.nostrip = nostrip
        self.debug = debug
        self.error_reports = []
        self.max_errors = max_errors
        self.num_warnings = 0
        self.num_errors = 0

def errmsg_context(self, context):
        linetext = ''
        filename = '<unknown file>'
        if context is not None:
            if hasattr(context, 'index'):
                index = context.index
                src = context.src
            else:
                index = context
                src = self
            if src is not None:
                filename = src.filename
                linetext = src.get_line(index=index)
            print('%s:%s:' % (filename, index+1))
            if linetext:
                print('    %s' % linetext)

def error(self, message, context=None, exception=None, more=(), harmless=0):
        self.error_reports.append(
            (message, context, exception, more, harmless))
        if harmless:
            self.num_warnings += 1
        else:
            self.num_errors += 1

self.errmsg_context(context)
        if harmless:
            print('*   %s' % message)
        else:
            print('*** %s' % message)
        print()

for msg, ctx in more:
            self.errmsg_context(ctx)
            print('    %s' % msg)
            print()

if self.debug:
            import pdb
            pdb.set_trace()
        else:
            if self.num_errors >= self.max_errors:
                raise TooManyErrors('Too many errors, giving up')
            if exception is not None:
                raise exception

def get_line(self, index):
        if self.lines is None:
            if self.string is None:
                if self.filename:
                    try:
                        with open(self.filename) as f:
                            self.string = f.read()
                    except Exception:
                        return ''
                else:
                    return ''
            self.lines = self.string.split('\n')
        return self.lines[index]

class _GLUECLAMP_:

_chgable_ = 'nodemap', 'SpecNode'

_imports_ = (
        '_parent:DottedTree',
        '_root:re',
        '_root:os',
    )

node_aliases_defs = (
        ('attr', 'attribute'),
        ('c', 'comment'),
        ('cond', 'condition'),
        ('d', 'description'),
        ('dwh', 'description_with_header'),
        ('eg', 'example'),
        ('fop', 'function_operator'),
        ('iop', 'inplace_operator'),
        ('ka', 'key_arg'),
        ('op', 'operator'),
        ('rop', 'reverse_operator'),
        ('t', 'text'),
    )

def _get_node_aliases(self):
        return dict(self.node_aliases_defs)

def _get_reverse_node_aliases(self):
        # Used to make names shorter
        return dict([(v, k) for k, v in self.node_aliases_defs])

def _get_is_not_ascii(self):
        return self.re.compile(eval(r'u"[\u0080-\uffff]"')).search

##
    # @return A tuple of predefined subjects.

def get_predefined_subjects(self):
        return (GuppyWorld(self),)

##
    # Parses a file and makes a tree of nodes
    # @param file name of file containing a dotted tree
    # @return a SpecNode object
    # @more
    # First tag is special.
    # We don't interpret the first line of the file,
    # but uses a special file tag.

def node_of_file(self, file, nostrip=0):
        src = Source(name=file, nostrip=nostrip)
        dtree = self.DottedTree.parse_file(file, src)
        tag = 'file'
        arg = file
        text = dtree.tag.strip()
        children = self.nodes_of_dforest(dtree.children, src)
        index = dtree.index
        return self.node_of_tatci(tag, arg, text, children, index, src)

def node_of_string(self, string, name='<string>', nostrip=0):
        dtree = self.DottedTree.parse_string(string)
        tag = 'string'
        arg = name
        src = Source(name=name, string=string, nostrip=nostrip)
        text = dtree.tag.strip()
        index = dtree.index
        children = self.nodes_of_dforest(dtree.children, src)
        return self.node_of_tatci(tag, arg, text, children, index, src)

def node_of_dtree(self, dtree, src):
        tag = dtree.tag
        textpos = tag.find('\n')
        if textpos == -1:
            textpos = len(tag)

equpos = tag.find('=', 0, textpos)
        colonpos = tag.find(':', 0, textpos)
        if equpos != -1 and (colonpos == -1 or equpos < colonpos):
            tag, arg = (tag[:equpos].strip()+'=',
                        tag[equpos+1:].strip())
        else:
            if colonpos == -1:
                if not ' ' in tag[:textpos] or textpos >= len(tag.rstrip()):
                    colonpos = textpos
                else:
                    raise SyntaxError(
                        'No colon in spaced tag in node %s' % dtree)
            tag, arg = (tag[:colonpos].strip(),
                        tag[colonpos+1:]
                        )
        if tag in self.node_aliases:
            tag = self.node_aliases[tag]
        tag = tag.replace(' ', '_')
        if tag != 'text' and not src.nostrip:
            arg = arg.strip()

children = self.nodes_of_dforest(dtree.children, src)
        return self.node_of_taci(tag, arg, children, dtree.index, src)

def nodes_of_dforest(self, dforest, src):
        onodes = [self.node_of_dtree(c, src) for c in dforest]
        nodes = []
        for node in onodes:
            if node.tag != 'include':
                nodes.append(node)
                continue
            filename = node.arg.strip()
            filename = self.os.path.join(self.os.path.dirname(src.filename),
                                         filename)
            node = self.node_of_file(filename, nostrip=src.nostrip)
            nodes.extend(node.children)
        return tuple(nodes)

def _get_node_of_taci(self):
        return SpecNode

def node_of_tatci(self, tag, arg, text, children=(), index=0, src=None):
        if text:
            if tag == 'text':
                if arg:
                    arg = arg + '\n' + text
                else:
                    arg = text
            else:
                children = (self.node_of_taci(
                    'text', text, (), index, src),) + children
        return self.node_of_taci(tag, arg, children, index, src)

def node_of_text(self, text):
        # Returns a node that is either
        # - a 'text' node, if text was all ascii
        # - a 'char' node, if text was a single non-ascii
        # - a 'block' with children being a sequence of char and text nodes,
        #       if text contained ascii and non-ascii characters
        nodes = self.nodes_of_text(text)
        if len(nodes) == 1:
            return nodes[0]
        else:
            return self.node_of_taci('block', '', nodes)

def nodes_of_text(self, text):
        # Returns a sequence of nodes, encoding text.
        nodes = []
        if self.is_not_ascii(text):
            chars = []
            for char in text:
                no = ord(char)
                if no < 128:
                    chars.append(char)
                else:
                    if chars:
                        nodes.append(self.node_of_taci('text', ''.join(chars)))
                        chars = []
                    nodes.append(self.node_of_taci('char', str(no)))
            if chars:
                nodes.append(self.node_of_taci('text', ''.join(chars)))
        else:
            nodes.append(self.node_of_taci('text', text))
        return nodes

def main(self):
        root = self._root

specdir = root.os.path.join(
            root.os.path.dirname(root.os.path.realpath(__file__)),
            '../../specs')
        main_dt_name = root.os.path.join(specdir, "docexample.gsl")
        if not root.os.path.exists(main_dt_name):
            print('%s does not exist, skipping test' % main_dt_name)
            return

env = self.SpecEnv(self)

node = self.node_of_file(main_dt_name)
        node.accept(env)

def print_doc(self, dt):
        self.print_doc()

def unparse_head(self, level, tag, arg, text):
        head = tag
        if arg:
            head = head + ': ' + arg
        if text:
            head = head + '\n' + text
        tag = self.DottedTree.unparse_tag(level, head)
        return tag

def test_main():
    from guppy import Root
    root = Root()

root.guppy.gsl.SpecNodes.main()

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Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2023-09-24 06:25:58
..	dir	-	root/root	0755	2023-09-24 06:25:58
__pycache__	dir	-	root/root	0755	2023-09-24 06:25:58
Document.py	text/x-python	57.55 KB	root/root	0644	2023-09-05 09:10:14
DottedTree.py	text/plain	8.58 KB	root/root	0644	2023-09-05 09:10:14
Exceptions.py	text/x-python	402 B	root/root	0644	2023-09-05 09:10:14
FileIO.py	text/x-python	2.6 KB	root/root	0644	2023-09-05 09:10:14
Filer.py	text/plain	3.83 KB	root/root	0644	2023-09-05 09:10:14
Gsml.py	text/x-python	2.69 KB	root/root	0644	2023-09-05 09:10:14
Help.py	text/x-python	1018 B	root/root	0644	2023-09-05 09:10:14
Html.py	text/x-python	17.46 KB	root/root	0644	2023-09-05 09:10:14
Latex.py	text/x-python	25.16 KB	root/root	0644	2023-09-05 09:10:14
Main.py	text/x-python	66.91 KB	root/root	0644	2023-09-05 09:10:14
SpecNodes.py	text/x-python	18.48 KB	root/root	0644	2023-09-05 09:10:14
Tester.py	text/x-python	23.99 KB	root/root	0644	2023-09-05 09:10:14
Text.py	text/x-python	31.13 KB	root/root	0644	2023-09-05 09:10:14
XHTML.py	text/x-python	18.38 KB	root/root	0644	2023-09-05 09:10:14
__init__.py	text/plain	53 B	root/root	0644	2023-09-05 09:10:14