126 lines
3.2 KiB
Python
126 lines
3.2 KiB
Python
from smnp.ast.node.ignore import IgnoredNode
|
|
from smnp.ast.node.model import Node, ParseResult
|
|
from smnp.ast.node.none import NoneNode
|
|
from smnp.ast.parser import Parsers, DecoratorParser
|
|
from smnp.token.type import TokenType
|
|
|
|
|
|
def abstractIterableParser(iterableNodeType, openTokenType, closeTokenType, itemParser, name):
|
|
|
|
class AbstractIterable(Node):
|
|
def __init__(self, pos):
|
|
super().__init__(pos)
|
|
self.children = [NoneNode(), NoneNode()]
|
|
|
|
@property
|
|
def value(self):
|
|
return self[0]
|
|
|
|
@value.setter
|
|
def value(self, value):
|
|
self[0] = value
|
|
|
|
@property
|
|
def next(self):
|
|
return self[1]
|
|
|
|
@next.setter
|
|
def next(self, value):
|
|
self[1] = value
|
|
|
|
class AbstractIterableTail(AbstractIterable):
|
|
pass
|
|
|
|
def abstractIterableParser():
|
|
return Parsers.oneOf(
|
|
emptyIterable(),
|
|
openIterable(),
|
|
name=name
|
|
)
|
|
|
|
def emptyIterable():
|
|
def createNode(open, close):
|
|
node = AbstractIterable(open.pos)
|
|
node.value = open
|
|
node.next = close
|
|
return node
|
|
|
|
return Parsers.allOf(
|
|
Parsers.terminal(openTokenType),
|
|
Parsers.terminal(closeTokenType),
|
|
createNode=createNode,
|
|
name=name+"Empty"
|
|
)
|
|
|
|
def openIterable():
|
|
def createNode(open, item, tail):
|
|
node = AbstractIterable(open.pos)
|
|
node.value = item
|
|
node.next = tail
|
|
return node
|
|
|
|
return Parsers.allOf(
|
|
Parsers.terminal(openTokenType),
|
|
itemParser,
|
|
abstractIterableTailParser(),
|
|
createNode=createNode,
|
|
name=name+"Open"
|
|
)
|
|
|
|
def abstractIterableTailParser():
|
|
return Parsers.oneOf(
|
|
closeIterable(),
|
|
nextItem(),
|
|
name=name+"Tail"
|
|
)
|
|
|
|
def nextItem():
|
|
def createNode(comma, item, tail):
|
|
node = AbstractIterableTail(item.pos)
|
|
node.value = item
|
|
node.next = tail
|
|
return node
|
|
|
|
return Parsers.allOf(
|
|
Parsers.terminal(TokenType.COMMA, doAssert=True),
|
|
itemParser,
|
|
abstractIterableTailParser(),
|
|
name=name+"NextItem",
|
|
createNode=createNode
|
|
)
|
|
|
|
def closeIterable():
|
|
return Parsers.terminal(closeTokenType)
|
|
|
|
|
|
return abstractIterableParser()
|
|
#return toFlatDesiredNode(iterableNodeType, abstractIterableParser())
|
|
|
|
|
|
def toFlatDesiredNode(iterableNodeType, parser):
|
|
def wrapper(result):
|
|
if result.result:
|
|
value = flattenList(result.node)
|
|
node = iterableNodeType(result.node.pos)
|
|
node.children.clear()
|
|
for v in value:
|
|
node.append(v)
|
|
return ParseResult.OK(node)
|
|
|
|
return ParseResult.FAIL()
|
|
|
|
return DecoratorParser(wrapper, parser)
|
|
|
|
|
|
def flattenList(node, output=None):
|
|
if output is None:
|
|
output = []
|
|
|
|
if type(node.value) != IgnoredNode:
|
|
output.append(node.value)
|
|
|
|
if type(node.next) != IgnoredNode:
|
|
flattenList(node.next, output)
|
|
|
|
return output
|