def initial(): return OneOrMore([nclasses,enumeration]),database_config, EOF def nclasses(): return OneOrMore(nclass)
def attributes(): return "[", OneOrMore(attribute), Optional(attribute_label),"]" def attribute(): return attribute_key, "=", attribute_value
def recordDef():
return (defHeader, OneOrMore(defField), Optional('}'), Optional(')'),
Optional(']'))
def arrayOfDef():
return (
ZeroOrMore(RegExMatch(r'[\w]+')), # name
OneOrMore(RegExMatch(r'.*\]')), # data up to comment
ZeroOrMore(RegExMatch(r';[\s*\w]+')))
def pattern_with_last(): return ("(", OneOrMore(pattern), ".", pattern, ")")
def pattern_datum(): return [string, character, boolean, number]
def command_or_definition(): return [expression,
definition,
syntax_definition,
("(", "begin", OneOrMore(command_or_definition), ")")]
def definition(): return [ ("(", "define", variable, expression, ")"),
def syntax():
# match - syntax = ['"]SYNTAX['"](;)
return RegExMatch(r'syntax\s?=\s?[\'\"].*[\'\"]\;?'), OneOrMore(
endLine)
def cond(): return "(", "cond", OneOrMore([cond_clause, cond_call]), Optional(else_clause), ")"
def cond_clause(): return "(", expression, ZeroOrMore(expression), ")"
def citeString():
return (keywords, [(Optional(date), OneOrMore(cite)),
partialCite], oComma, EOF)
def oneofDef():
return ('oneof', defHeader, OneOrMore(defField), '}')
def intraCite():
return OneOrMore(
(supraSection, Optional(section), oComma, Optional(inPara)))
def claims(): return OneOrMore(claim), EOF class ClaimVisitor(PTNodeVisitor):
def repeat_modifiers():
return '[', OneOrMore([simple_match, 'eolterm']), ']'
def visit_assignment(self, node, children):
"""
Create parser rule for assignments and register attribute types
on metaclass.
"""
attr_name = children[0]
op = children[1]
rhs_rule, modifiers = children[2]
cls = self._current_cls
target_cls = None
if self.debug:
self.dprint("Processing assignment {}{}...".format(attr_name, op))
if self.debug:
self.dprint("Creating attribute {}:{}".format(
cls.__name__, attr_name))
self.dprint("Assignment operation = {}".format(op))
if attr_name in cls._tx_attrs:
# If attribute already exists in the metamodel it is
# multiple assignment to the same attribute.
# Cannot use operator ?= on multiple assignments
if op == '?=':
line, col = self.grammar_parser.pos_to_linecol(node.position)
raise TextXSemanticError(
'Cannot use "?=" operator on multiple'
' assignments for attribute "{}" at {}'.format(
attr_name, (line, col)), line, col)
cls_attr = cls._tx_attrs[attr_name]
else:
cls_attr = self.metamodel._new_cls_attr(cls,
name=attr_name,
position=node.position)
# Keep track of metaclass references and containments
if type(rhs_rule) is tuple and rhs_rule[0] == "obj_ref":
cls_attr.cont = False
cls_attr.ref = True
# Override rhs by its PEG rule for further processing
rhs_rule = rhs_rule[1]
# Target class is not the same as target rule
target_cls = rhs_rule.cls
base_rule_name = rhs_rule.rule_name
if op == '+=':
assignment_rule = OneOrMore(nodes=[rhs_rule],
rule_name='__asgn_oneormore',
root=True)
cls_attr.mult = MULT_ONEORMORE
elif op == '*=':
assignment_rule = ZeroOrMore(nodes=[rhs_rule],
rule_name='__asgn_zeroormore',
root=True)
if cls_attr.mult is not MULT_ONEORMORE:
cls_attr.mult = MULT_ZEROORMORE
elif op == '?=':
assignment_rule = Optional(nodes=[rhs_rule],
rule_name='__asgn_optional',
root=True)
cls_attr.mult = MULT_OPTIONAL
base_rule_name = 'BOOL'
# ?= assigment should have default value of False.
# so we shall mark it as such.
cls_attr.bool_assignment = True
else:
assignment_rule = Sequence(nodes=[rhs_rule],
rule_name='__asgn_plain',
root=True)
# Modifiers
if modifiers:
modifiers, position = modifiers
# Sanity check. Modifiers do not make
# sense for ?= and = operator at the moment.
if op == '?=' or op == '=':
line, col = self.grammar_parser.pos_to_linecol(position)
raise TextXSyntaxError(
'Modifiers are not allowed for "{}" operator at {}'.format(
op, text((line, col))), line, col)
# Separator modifier
assignment_rule.sep = modifiers.get('sep', None)
# End of line termination modifier
if 'eolterm' in modifiers:
assignment_rule.eolterm = True
if target_cls:
attr_type = target_cls
else:
# Use STRING as default attr class
attr_type = base_rule_name if base_rule_name else 'STRING'
if not cls_attr.cls:
cls_attr.cls = ClassCrossRef(cls_name=attr_type,
position=node.position)
else:
# cls cross ref might already be set in case of multiple assignment
# to the same attribute. If types are not the same we shall use
# OBJECT as generic type.
if cls_attr.cls.cls_name != attr_type:
cls_attr.cls.cls_name = 'OBJECT'
if self.debug:
self.dprint("Created attribute {}:{}[cls={}, cont={}, "
"ref={}, mult={}, pos={}]".format(
cls.__name__, attr_name, cls_attr.cls.cls_name,
cls_attr.cont, cls_attr.ref, cls_attr.mult,
cls_attr.position))
assignment_rule._attr_name = attr_name
assignment_rule._exp_str = attr_name # For nice error reporting
return assignment_rule
def package():
# match - package ('")PACKAGE('")(;)
return RegExMatch(r'package\s?[\'\"]?.*[\'\"]?\;?'), OneOrMore(endLine)
def sequence(): return OneOrMore(expression)
def conditional(): return "(", "if", expression, expression, Optional(expression), ")"
def pkgImports():
# match - import ['"]PACKAGE['"](;)
return RegExMatch(r'import\s?[\'\"].*[\'\"]\;?'), OneOrMore(endLine)
def else_clause(): return "(", "else", OneOrMore(expression), ")"
def or_(): return "(", "or", ZeroOrMore(expression), ")"
def messageDef():
return ('message', defHeader, OneOrMore(defField), '}')
def template_with_last(): return ("(", OneOrMore(template_element), ".", template, ")")
def template_element(): return [template, (template, ellipsis)]
def metalstar():
return Optional(noprefixstar), OneOrMore(metalsection)
def calc(): return OneOrMore(expression), EOF def test_pp_construction():
def scrange():
return [(numeric, '-', Optional(numeric)), (numeric, '+'),
(numeric, Optional(OneOrMore(' '), '-', OneOrMore(' '), numeric))]
def enumDef():
return (defHeader, OneOrMore(enumField), OneOrMore(endLine))
def integer():
return (Optional("-"), OneOrMore(nums))
def typeDefs():
return (OneOrMore(
UnorderedGroup(ZeroOrMore(recordDef), ZeroOrMore(enumDef),
ZeroOrMore(arrayOfDef))))
def _list(): return [("(", ZeroOrMore(datum), ")"), ("(", OneOrMore(datum), ".", datum, ")")] #, abbreviation]
def abbreviation(): return abbrev_prefix, datum
def nclasses(): return OneOrMore(nclass)
def nclass(): return Optional(ABSTRACT),CLASS, class_name,Optional(":", class_name), ZeroOrMore(attributes)
def parameters_with_last(): return "(", OneOrMore(variable), ".", variable, ")"
def body(): return ZeroOrMore(definition), sequence
def assignment_SA(parser, node, children):
"""
Create parser rule for addition and register attribute types
on metaclass.
"""
attr_name = children[0]
op = children[1]
rhs_rule, modifiers = children[2]
cls = parser._current_cls
target_cls = None
if parser.debug:
parser.dprint("Processing assignment {}{}...".format(attr_name, op))
if parser.debug:
parser.dprint("Creating attribute {}:{}".format(cls.__name__,
attr_name))
parser.dprint("Assignment operation = {}".format(op))
if attr_name in cls._tx_attrs:
# If attribute already exists in the metamodel it is
# multiple assignment to the same attribute.
# Cannot use operator ?= on multiple assignments
if op == '?=':
line, col = parser.pos_to_linecol(node.position)
raise TextXSemanticError(
'Cannot use "?=" operator on multiple'
' assignments for attribute "{}" at {}'
.format(attr_name, (line, col)), line, col)
cls_attr = cls._tx_attrs[attr_name]
# Must be a many multiplicity.
# OneOrMore is "stronger" constraint.
if cls_attr.mult is not MULT_ONEORMORE:
cls_attr.mult = MULT_ZEROORMORE
else:
cls_attr = parser.metamodel.new_cls_attr(cls, name=attr_name,
position=node.position)
# Keep track of metaclass references and containments
if type(rhs_rule) is tuple and rhs_rule[0] == "obj_ref":
cls_attr.cont = False
cls_attr.ref = True
# Override rhs by its PEG rule for further processing
rhs_rule = rhs_rule[1]
# Target class is not the same as target rule
target_cls = rhs_rule.cls
base_rule_name = rhs_rule.rule_name
if op == '+=':
assignment_rule = OneOrMore(
nodes=[rhs_rule],
rule_name='__asgn_oneormore', root=True)
cls_attr.mult = MULT_ONEORMORE
elif op == '*=':
assignment_rule = ZeroOrMore(
nodes=[rhs_rule],
rule_name='__asgn_zeroormore', root=True)
if cls_attr.mult is not MULT_ONEORMORE:
cls_attr.mult = MULT_ZEROORMORE
elif op == '?=':
assignment_rule = Optional(
nodes=[rhs_rule],
rule_name='__asgn_optional', root=True)
cls_attr.mult = MULT_OPTIONAL
base_rule_name = 'BOOL'
# ?= assigment should have default value of False.
# so we shall mark it as such.
cls_attr.bool_assignment = True
else:
assignment_rule = Sequence(
nodes=[rhs_rule],
rule_name='__asgn_plain', root=True)
# Modifiers
if modifiers:
modifiers, position = modifiers
# Sanity check. Modifiers do not make
# sense for ?= operator at the moment.
if op == '?=':
line, col = parser.pos_to_linecol(position)
raise TextXSyntaxError(
'Modifiers are not allowed for "?=" operator at {}'
.format(text((line, col))), line, col)
# Separator modifier
if 'sep' in modifiers:
sep = modifiers['sep']
assignment_rule = Sequence(
nodes=[rhs_rule,
ZeroOrMore(nodes=[Sequence(nodes=[sep, rhs_rule])])],
rule_name='__asgn_list', root=True)
if op == "*=":
assignment_rule = Optional(nodes=[rhs_rule])
assignment_rule = Optional(nodes=[Sequence(
nodes=[rhs_rule,
ZeroOrMore(nodes=[
Sequence(nodes=[sep, rhs_rule])])])],
rule_name='__asgn_list', root=True)
# End of line termination modifier
if 'eolterm' in modifiers:
assignment_rule.eolterm = True
if target_cls:
attr_type = target_cls
else:
# Use STRING as default attr class
attr_type = base_rule_name if base_rule_name else 'STRING'
cls_attr.cls = ClassCrossRef(cls_name=attr_type, position=node.position)
if parser.debug:
parser.dprint("Created attribute {}:{}[cls={}, cont={}, "
"ref={}, mult={}, pos={}]"
.format(cls.__name__, attr_name, cls_attr.cls.cls_name,
cls_attr.cont, cls_attr.ref, cls_attr.mult,
cls_attr.position))
assignment_rule._attr_name = attr_name
assignment_rule._exp_str = attr_name # For nice error reporting
return assignment_rule
def sequence():
return OneOrMore(repeatable_expr)