def __recurser(node, permutation, inCondition=False):
# Support block commands
# These come with their own node.type
if node.type == "if":
# Pre-process condition
# We manually process each child in for if-types
__recurser(node.condition, permutation, True)
# Cast condition to Python boolean type
resultValue = None
try:
resultValue = Operation.castToBool(node.condition)
except Operation.OperationError as ex:
Console.debug("Walked into unprocessed condition. Waiting for actual execution. Message: %s", ex)
if not resultValue is None:
# Process relevant part of the sub tree
if resultValue is True:
# Fix missing processing of result node
__recurser(node.thenPart, permutation)
# Finally replace if-node with result node
node.parent.replace(node, node.thenPart)
elif resultValue is False and hasattr(node, "elsePart"):
# Fix missing processing of result node
__recurser(node.elsePart, permutation)
# Finally replace if-node with result node
node.parent.replace(node, node.elsePart)
else:
# Cleanup original if-node
node.parent.remove(node)
# All done including child nodes
return
# Process children first (resolve logic is inner-out)
for child in list(node):
if child is not None:
__recurser(child, permutation, inCondition)
# Inside of conditions replace identifiers with their actual value (from current permutation)
if inCondition and node.type == "identifier":
if not permutation.has(node.value):
raise ResolverError("Could not find field %s" % node.value, node)
repl = Util.castNativeToNode(permutation.get(node.value))
node.parent.replace(node, repl)
# Support inline @field() commands
elif node.type == "command" and node.name == "field":
if len(node.params) == 0:
raise ResolverError("Missing parameter to insert field via @field.", node)
identifierNode = node.params[0]
if identifierNode.type != "identifier":
raise ResolverError("Invalid parameter to @field call: %s" % identifierNode.type, identifierNode)
identifier = identifierNode.value
if not permutation.has(identifier):
raise ResolverError("Could not find field with the name %s" % identifier, identifierNode)
repl = Util.castNativeToNode(permutation.get(identifier))
node.parent.replace(node, repl)
# Support typical operators
elif node.type in Util.ALL_OPERATORS:
repl = Operation.compute(node)
if repl is not None:
node.parent.replace(node, repl)
def __recurser(node, scope, values, profile):
# Replace variable with actual value
if node.type == "variable" and not (node.parent.type == "assign"
and node.parent[0] is node):
name = node.name
if name not in values:
raise ExecuterError(
"Could not resolve variable %s! Missing value!" % name, node)
value = values[name]
if value is None:
raise ExecuterError(
"Could not resolve variable %s! Value is none!" % name, node)
Console.debug("Resolving variable: %s at line %s with %s from %s",
name, node.line, values[name].type, values[name].line)
node.parent.replace(node, copy.deepcopy(values[name]))
# Decide which sub tree of an if-condition is relevant based on current variable situation
elif node.type == "if":
Console.debug("Processing if-condition at %s", node.line)
# Pre-process condition
# We manually process each child in for if-types
__recurser(node.condition, scope, values, profile)
# Cast condition to Python boolean type
resultValue = Operation.castToBool(node.condition)
# Process relevant part of the sub tree
if resultValue is True:
# Fix missing processing of result node
__recurser(node.thenPart, scope, values, profile)
# Finally replace if-node with result node
node.parent.replace(node, node.thenPart)
elif resultValue is False and hasattr(node, "elsePart"):
# Fix missing processing of result node
__recurser(node.elsePart, scope, values, profile)
# Finally replace if-node with result node
node.parent.replace(node, node.elsePart)
else:
# Cleanup original if-node
node.parent.remove(node)
# Nothing to do here as content is already processed
return
# Update scope of new block starts
if hasattr(node, "scope"):
relation = getattr(node, "rel", None)
# Conditional blocks are not exactly blocks in this variable resolution engine
if not relation in ("thenPart", "elsePart"):
scope = node.scope
values = copy.copy(values)
node.values = values
# Reset all local variables to None
# which enforces not to keep values from outer scope
for name in scope.modified:
values[name] = None
# Process children / content
for child in list(node):
# Ignore non-children... through possible interactive structure changes
if child and child.parent is node:
__recurser(child, scope, values, profile)
# Update values of variables
# This happens after processing children to possibly reduce child structure to an easy to assign (aka preprocessed value)
if (node.type == "declaration"
and hasattr(node, "initializer")) or node.type == "assign":
if node.type == "declaration":
name = node.name
init = node.initializer
Console.debug("Found declaration of %s at line %s", name,
node.line)
else:
name = node[0].name
init = node[1]
Console.debug("Found assignment of %s at line %s", name, node.line)
# Modify value instead of replace when assign operator is set
if hasattr(node, "assignOp") and node.assignOp is not None:
if name not in values:
raise ExecuterError(
"Assign operator is not supported as left hand variable is missing: %s"
% name, node)
repl = Operation.compute(node, values[name], init, node.assignOp)
if repl is not None:
values[name] = repl
else:
# Update internal variable mapping
# Console.debug("Update value of %s to %s" % (name, init))
values[name] = init
# Remove declaration node from tree
node.parent.remove(node)
# Support for variables inside property names or selectors
elif node.type in ("property", "selector") and getattr(
node, "dynamic", False):
def replacer(matchObj):
name = matchObj.group(1)
if name not in values:
raise ExecuterError(
"Could not resolve variable %s! Missing value!" % name,
node)
value = values[name]
if value is None:
raise ExecuterError(
"Could not resolve variable %s! Value is none!" % name,
node)
if value.type == "identifier":
return value.value
elif value.type == "string":
return value.value
elif value.type == "number":
return "%s%s" % (value.value, getattr(value, "unit", ""))
else:
raise ExecuterError(
"Could not replace property inline variable with value of type: %s"
% value.type, node)
# Fix all selectors
if node.type == "selector":
selectors = node.name
for pos, selector in enumerate(selectors):
selectors[pos] = RE_INLINE_VARIABLE.sub(replacer, selector)
else:
node.name = RE_INLINE_VARIABLE.sub(replacer, node.name)
# Execute system commands
elif node.type == "command":
repl = Util.executeCommand(node, profile)
if not repl is node:
node.parent.replace(node, repl)
# Support typical operators
elif node.type in Util.ALL_OPERATORS:
repl = Operation.compute(node)
if repl is not None:
node.parent.replace(node, repl)