def visit(self, scopeNode):
# go through globals
for name,scopeVar in scopeNode.globals().iteritems():
# name might be as little as 'qx'
for node in scopeVar.occurrences():
# assemble var
var_node = treeutil.findVarRoot(node)
var_name = var_node.toJS(None) # e.g. "qx.util.ResourceManager.getInstance"
if var_name in lang.QX_CLASS_FACTORIES: # capture qx.*.define() calls
succ, class_name, _ = treeutil.isQxDefine(var_node)
if succ and class_name: self.new_qx_classes.append(class_name)
# lookup in globals_map
sKnown_global = self.globals_map.longest_match(var_name) # -> "qx.util.ResourceManager"
if sKnown_global:
sReplacement = self.globals_map[sKnown_global]
# find node in tree
dot_number = sKnown_global.count(".")
uptimes = u'/'.join(['..'] * dot_number)
source_node = treeutil.selectNode(node, uptimes) if uptimes else node
# construct replacement
repl_node = treegenerator.parse(sReplacement, expr=True) # could be "foo.bar" or "qx.$g['bNq']"
# replace known symbol in tree
source_node.parent.replaceChild(source_node, repl_node)
# update scopeVar.occurrences??!!
for child in scopeNode.children:
self.visit(child)
def patch(tree, classObj, featureMap):
# change this to 'False' if you want logging instead of function removal
prune_dont_log = True
feature_names = featureMap[classObj.id]
# get class map
qxDefine = treeutil.findQxDefine(tree)
classMap = treeutil.getClassMap(qxDefine)
# go through features in 'members' and 'statics'
for section in ("statics", "members"):
if section in classMap:
for feature, node in classMap[section].items():
# skip registered and used keys
if feature in feature_names and feature_names[feature].hasref():
continue
else:
parent = node.parent
assert parent.type == "keyvalue"
#print "static optimizing: %s#%s" % (classObj.id, feature)
if prune_dont_log:
# remove sub tree
parent.parent.removeChild(parent) # remove the entire feature from the map
# remove from featureMap
if feature in feature_names:
del featureMap[classObj.id][feature]
# decrease the ref counts of the contained dependees
decrementFromCode(classObj, node, featureMap)
else:
# OR: only add runtime logging to functions
block = treeutil.selectNode(node, 'function/body/block/statements')
if block:
LogStmt = treegenerator.parse("console.warn('Static optimization would have removed: " + classObj.id + '#' + feature + "');")
block.addChild(LogStmt, 0)
def visit(self, scopeNode):
# go through globals
for name, scopeVar in scopeNode.globals().iteritems():
# name might be as little as 'qx'
for node in scopeVar.occurrences():
# assemble var
var_node = treeutil.findVarRoot(node)
var_name = var_node.toJS(
None) # e.g. "qx.util.ResourceManager.getInstance"
if var_name in lang.QX_CLASS_FACTORIES: # capture qx.*.define() calls
succ, class_name, _ = treeutil.isQxDefine(var_node)
if succ and class_name:
self.new_qx_classes.append(class_name)
# lookup in globals_map
sKnown_global = self.globals_map.longest_match(
var_name) # -> "qx.util.ResourceManager"
if sKnown_global:
sReplacement = self.globals_map[sKnown_global]
# find node in tree
dot_number = sKnown_global.count(".")
uptimes = u'/'.join(['..'] * dot_number)
source_node = treeutil.selectNode(
node, uptimes) if uptimes else node
# construct replacement
repl_node = treegenerator.parse(
sReplacement,
expr=True) # could be "foo.bar" or "qx.$g['bNq']"
# replace known symbol in tree
source_node.parent.replaceChild(source_node, repl_node)
# update scopeVar.occurrences??!!
for child in scopeNode.children:
self.visit(child)
def visit_Literal(self, enode):
n = new_symbol("constant", enode)
# have to sort out RegExp literals
if enode["value"] == {}:
# Esprima 1.0.4 represents regexp's as empty map in Json!, so i have
# to fall back to the "raw" property.
# the online demo esprima.org/demo/parse.html has the regex as a
# string in "value" directly!?
n = treegenerator.parse(enode["raw"], expr=True) # need esparse --raw here!!
else:
n = reducer.set_node_type_from_value(n, enode["value"])
return n
def propagate_new_globals(node, new_symbols, globals_map):
# make sure there is a wrapping closure
node, closure_block = treeutil.ensureClosureWrapper(node)
# add new statements at end
for new_symbol in new_symbols:
# construct statement
stmt = "%s = %s;" % (globals_map[new_symbol], new_symbol)
# compile to JS
stmt_tree = treegenerator.parse(stmt)
# attach to node tree
closure_block.addChild(stmt_tree) # does append by default
def visit_Literal(self, enode):
n = new_symbol("constant", enode)
# have to sort out RegExp literals
if enode["value"] == {}:
# Esprima 1.0.4 represents regexp's as empty map in Json!, so i have
# to fall back to the "raw" property.
# the online demo esprima.org/demo/parse.html has the regex as a
# string in "value" directly!?
n = treegenerator.parse(enode["raw"],
expr=True) # need esparse --raw here!!
else:
n = reducer.set_node_type_from_value(n, enode["value"])
return n
def ensureClosureWrapper(nodes):
if not nodes:
return None, None
# check if we have a closure wrapper already
if len(nodes) == 1:
closure_statements = is_closure_wrapped(nodes[0])
if closure_statements:
return nodes[0], closure_statements
# create a closure wrapper and attach argument nodes
new_tree = treegenerator.parse("(function(){})();").getChild("call")
closure_statements = selectNode(new_tree, wrapper_statements_path)
for node in nodes[:]:
closure_statements.addChild(node)
return new_tree, closure_statements
def ensureClosureWrapper(nodes):
if not nodes:
return None, None
# check if we have a closure wrapper already
if len(nodes) == 1:
closure_statements = is_closure_wrapped(nodes[0])
if closure_statements:
return nodes[0], closure_statements
# create a closure wrapper and attach argument nodes
new_tree = treegenerator.parse("(function(){})();").getChild("call")
closure_statements = selectNode(new_tree, wrapper_statements_path)
for node in nodes[:]:
closure_statements.addChild(node)
return new_tree, closure_statements
def propagate_new_globals(node, new_symbols, globals_map):
# assuming a container <node>, like <file> or <block>
# make sure there is a wrapping closure
stmtsNode = node.getChild("statements")
new_node, closure_block = treeutil.ensureClosureWrapper(stmtsNode.children)
stmtsNode.removeAllChildren()
stmtsNode.addChild(new_node)
# add new statements at end
for new_symbol in new_symbols:
# construct statement
stmt = "%s = %s;" % (globals_map[new_symbol], new_symbol)
# compile to JS
stmt_tree = treegenerator.parse(stmt).getFirstChild() # unwrap from 'statments' node
# attach to node tree
closure_block.addChild(stmt_tree) # does append by default
return node
def propagate_new_globals(node, new_symbols, globals_map):
# assuming a container <node>, like <file> or <block>
# make sure there is a wrapping closure
stmtsNode = node.getChild("statements")
new_node, closure_block = treeutil.ensureClosureWrapper(stmtsNode.children)
stmtsNode.removeAllChildren()
stmtsNode.addChild(new_node)
# add new statements at end
for new_symbol in new_symbols:
# construct statement
stmt = "%s = %s;" % (globals_map[new_symbol], new_symbol)
# compile to JS
stmt_tree = treegenerator.parse(stmt).getFirstChild() # unwrap from 'statments' node
# attach to node tree
closure_block.addChild(stmt_tree) # does append by default
return node
def visit(self, scopeNode):
# go through globals
for scopeVar in scopeNode.globals():
# this might be as little as 'qx'
for node in scopeVar.occurrences():
# assemble var
var_node = treeutil.findVarRoot(node)
var_name = var_node.toJS() # e.g. "qx.util.ResourceManager.getInstance"
# lookup in globals_map
known_global, replacement = (
self.global_map.longest_match(var_name)) # -> "qx.util.ResourceManager"
# find node in tree
dot_number = 0 # TODO
uptimes = u'/'.join(['..'] * dot_number)
source_node = treeutil.selectNode(node, uptimes)
# construct replacement
repl_node = treegenerator.parse(replacement) # could be "foo.bar" or "qx.$g['bNq']"
# replace known symbol in tree
source_node.parent.replaceChild(source_node, repl_node)