def CLASS_ENTRY_TABLE(self):
print "create_classEntryAndTable."
# ensure class name does not already exist in Global Table
class_entry = Entry(self.level, self.prevToken_buffer, 'class', '')
if self.SymbolTable_stack[0].search(class_entry) is None:
# log class name in classDict if not there
if class_entry.name.value not in self.classUsageDict:
self.classUsageDict[class_entry.name.value] = []
# create a table entry and link it to the new class table
self.level += 1
class_entry.link = Symbol_Table(self.level, class_entry.name)
# append the new entry to the global table and put the reference to the class table on top the stack
if self.SymbolTable_stack:
self.SymbolTable_stack[-1].addEntry(class_entry)
self.SymbolTable_stack.append(class_entry.link)
else:
# error this class name alreay exists in global table
print "Attempting new class entry/table but name " + self.prevToken_buffer.value + " already exists in global table"
self.error += "\nError: Duplicate class declaration: " + str(
self.prevToken_buffer)
print self.error
def FUNC_ENTRY_TABLE(self):
print "create_funcEntryAndTable."
# ensure function name does not already exist in current scope
if len(self.attr_buffer) > 1:
func_name = self.attr_buffer.pop()
func_type = self.attr_buffer.pop()
# create a new global/local table entry and link it to the new class table
entry = Entry(self.level, func_name, 'function', func_type)
self.level += 1
entry.link = Symbol_Table(self.level, entry.name)
if self.SymbolTable_stack[-1].search(entry) is None:
# check if in class or global table
if len(self.SymbolTable_stack) <= 1:
if entry.name.value not in self.classUsageDict:
self.classUsageDict[entry.name.value] = []
# append the new entry to the global/class table and put the reference to the class table on top the stack
if self.SymbolTable_stack:
self.SymbolTable_stack[-1].addEntry(entry)
self.SymbolTable_stack.append(entry.link)
# save function reference for later type/valid call checking
self.function_defs.append(entry)
else:
# error this function name alreay exists in scope
print "Attempting new function but name " + func_name.value + " already exists in scope"
self.error += "\nError: Duplicate function declaration: " + str(
func_name)
print self.error
def CLASS_ENTRY_TABLE(self):
print "create_classEntryAndTable."
# create a table entry and link it to the new class table
class_entry = Entry(self.level, self.prevToken_buffer, 'class', '')
self.level += 1
class_entry.link = Symbol_Table(self.level, class_entry.name)
# append the new entry to the global table and put the reference to the class table on top the stack
self.SymbolTable_stack[-1].addEntry(class_entry)
self.SymbolTable_stack.append(class_entry.link)
def PROGRAM_FUNC_ENTRY_TABLE(self):
print 'adding the program function entry and symbol_table.'
# create a new global table entry and link it to the new main program function table
entry = Entry(self.level, self.prevToken_buffer, 'function', '')
self.level += 1
entry.link = Symbol_Table(self.level, entry.name)
# append the new entry to the global table and put the reference to the program table on top the stack
if self.SymbolTable_stack:
self.SymbolTable_stack[-1].addEntry(entry)
self.SymbolTable_stack.append(entry.link)