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#
# Copyright Capita Translation and Interpreting 2013
#
# This file is part of Pipeline Creation Language (PCL).
#
# Pipeline Creation Language (PCL) is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Pipeline Creation Language (PCL) is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Pipeline Creation Language (PCL). If not, see <http://www.gnu.org/licenses/>.
#
from entity import Entity
class Function(Entity):
def __init__(self,
filename,
lineno,
name,
arguments):
Entity.__init__(self, filename, lineno)
self.name = name
self.arguments = arguments
def accept(self, visitor):
visitor.visit(self)
def __str__(self):
return "%s(%s)" % \
(str(self.name),
", ".join(map(lambda arg: str(arg), self.arguments)))
def __repr__(self):
return "<Function:\n\tname = %s\n\targuments = %s\n\tentity = %s>" % \
(repr(self.name),
", ".join(map(lambda arg: arg.__repr__(), self.arguments)),
super(Function, self).__repr__())
class Command(Entity):
def __init__(self,
filename,
lineno,
identifier,
function):
Entity.__init__(self, filename, lineno)
self.identifier = identifier
self.function = function
def accept(self, visitor):
self.function.accept(visitor)
visitor.visit(self)
def __str__(self):
l = [str(self.function)]
if self.identifier:
l.insert(0, "<-")
l.insert(0, str(self.identifier))
return " ".join(l)
def __repr__(self):
return "<Command:\n\tidentifier = %s,\n\tfunction = %s,\n\t" \
"entity = %s>" % \
(repr(self.identifier),
repr(self.function),
super(Command, self).__repr__())
class Return(Entity):
def __init__(self,
filename,
lineno,
value = None,
mappings = list()):
Entity.__init__(self, filename, lineno)
self.value = value
self.mappings = mappings
def accept(self, visitor):
visitor.visit(self)
def __str__(self):
def value_str():
if self.value is not None:
return str(self.value)
elif not self.mappings:
return "()"
else:
return ", ".join(map(lambda m: str(m), self.mappings))
return "return %s" % value_str()
def __repr__(self):
return "<Return:\n\tvalue = %s\n\tmappings = %s\n\tentity = %s>" % \
(repr(self.value),
"()" if not self.mappings \
else ", ".join(map(lambda m: repr(m), self.mappings)), \
super(Return, self).__repr__())
class IfCommand(Entity):
class Block(Entity):
def __init__(self, filename, lineno, commands, if_command):
Entity.__init__(self, filename, lineno)
self.commands = commands
self.if_command = if_command
def __getitem__(self, idx):
return self.commands[idx]
def __iter__(self):
return self.commands.__iter__()
def append(self, cmd):
self.commands.append(cmd)
def accept(self, visitor):
visitor.visit(self)
for cmd in self.commands:
cmd.accept(visitor)
class ThenBlock(Block):
def __init__(self, filename, lineno, commands, if_command):
IfCommand.Block.__init__(self, filename, lineno, commands, if_command)
class ElseBlock(Block):
def __init__(self, filename, lineno, commands, if_command):
IfCommand.Block.__init__(self, filename, lineno, commands, if_command)
def __init__(self,
filename,
lineno,
identifier,
condition,
then_commands,
else_commands):
Entity.__init__(self, filename, lineno)
self.identifier = identifier
self.condition = condition
self.then_commands = IfCommand.ThenBlock(filename, then_commands[0].lineno, then_commands, self)
self.else_commands = IfCommand.ElseBlock(filename, else_commands[0].lineno, else_commands, self)
def accept(self, visitor):
self.condition.accept(visitor)
self.then_commands.accept(visitor)
self.else_commands.accept(visitor)
visitor.visit(self)
def __str__(self):
f = lambda cmd: str(cmd)
l = list()
if self.identifier:
l.extend([str(self.identifier), '<-'])
l.extend(['if',
str(self.condition),
'then',
" ".join(map(f, self.then_commands)),
'else',
" ".join(map(f, self.else_commands)),
'endif'])
return " ".join(l)
def __repr__(self):
f = lambda cmd: repr(cmd)
return "<IfCommand:\n\tidentifier = %s\n\tcondition = %s,\n\tthen_commands = %s,\n\t" \
"else_commands = %s\n\tentity = %s>" % \
(repr(self.identifier),
repr(self.condition),
" ".join(map(f, self.then_commands)),
" ".join(map(f, self.else_commands)),
super(IfCommand, self).__repr__())
class LetCommand(Entity):
class LetBindings(Entity):
def __init__(self,
filename,
lineno,
bindings):
Entity.__init__(self, filename, lineno)
self.bindings = bindings
def __getitem__(self, idx):
return self.bindings[idx]
def __iter__(self):
return self.bindings.__iter__()
def accept(self, visitor):
visitor.visit(self)
for binding in self.bindings:
binding.accept(visitor)
class LetEnd(Entity):
def __init__(self, filename, lineno):
Entity.__init__(self, filename, lineno)
def accept(self, visitor):
visitor.visit(self)
def __init__(self,
filename,
lineno,
identifier,
bindings,
expression):
Entity.__init__(self, filename, lineno)
self.identifier = identifier
self.bindings = LetCommand.LetBindings(filename, bindings[0].lineno, bindings)
self.expression = expression
self.let_end = LetCommand.LetEnd(filename, expression.lineno)
def accept(self, visitor):
visitor.visit(self)
self.bindings.accept(visitor)
self.expression.accept(visitor)
self.let_end.accept(visitor)
def __str__(self):
l = ['let']
l.extend([str(b) for b in self.bindings])
l.append('in')
l.append(str(self.expression))
return ' '.join(l)
def __repr__(self):
f = lambda t: repr(t)
return "<LetCommand:\n\tidentifier = %s\n\tbindings = %s\n\t" \
"expression = %s\n\tentity = %s>" % \
(repr(self.identifier),
" ".join(map(f, self.bindings)),
repr(self.expression),
super(LetCommand, self).__repr__())
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