def VAR_ENTRY(self):
print "creating create_varEntry."
# create a new class table entry for a variable
entry = Entry(self.level, '', 'variable', '')
while isinstance(self.attr_buffer[-1], int):
entry.arraySize.insert(0, self.attr_buffer.pop())
if len(self.attr_buffer) > 1:
nameToken = self.attr_buffer.pop()
entry.name = nameToken
typeToken = self.attr_buffer.pop()
entry.type = typeToken
# if variable already in scope give warning
foundEntry = self.check_var_in_scope(entry)
if isinstance(foundEntry, Entry):
self.warnings += "\nWarning: Variable " + str(
nameToken) + " already exists in scope here: " + str(
foundEntry.name)
# if type is a UD_Type, put in dict for 'second pass' circular class dependency checking
if entry.type != 'int' and entry.type != 'float' and len(
self.SymbolTable_stack
) > 1 and self.SymbolTable_stack[1].name != 'program':
if self.SymbolTable_stack[1].name.value in self.classUsageDict:
if typeToken not in self.classUsageDict[
self.SymbolTable_stack[1].name.value]:
self.classUsageDict[
self.SymbolTable_stack[1].name.value].append(typeToken)
else:
self.classUsageDict[self.SymbolTable_stack[1].name.value] = []
# append the new entry to the class table
if self.SymbolTable_stack:
self.SymbolTable_stack[-1].addEntry(entry)
def ASSIGNMENT_VAR(self):
print 'Assign Var'
entry = Entry(self.level, '', 'assignment', '')
# get all arithExpr indices specified and save them in the assignment entry
while isinstance(self.attr_buffer[-1], list):
entry.IDXorPARAMS.insert(0, self.attr_buffer.pop())
if len(self.attr_buffer) > 0:
entry.name = self.attr_buffer.pop()
entry = self.ensure_var_exist(entry)
if entry is not None and len(self.SymbolTable_stack) > 0:
self.SymbolTable_stack[-1].addEntry(entry)
def PACK_NEST(self):
print 'packing and saving nest'
# self.warnings += '\nin pack_nest, ' + str(self.SymbolTable_stack[-1].entries[-1].nest)
if len(self.SymbolTable_stack[-1].entries[-1].nest) > 0 and len(
self.SymbolTable_stack[-1].entries[-1].nest[-1]) == 0:
entry = Entry(self.level, '', 'nest', '')
# get all arithExpr indices specified and save them in the assignment entry
while isinstance(self.attr_buffer[-1], list):
entry.IDXorPARAMS.insert(0, self.attr_buffer.pop())
if len(self.attr_buffer) > 0:
entry.name = self.attr_buffer.pop()
# should change to ensure nest variable exist...
#entry = self.ensure_var_exist(entry)
if entry is not None and len(self.SymbolTable_stack) > 0:
self.SymbolTable_stack[-1].entries[-1].nest[-1].append(entry)
# self.assignmentEntryBuffer = entry
else:
print 'no nest to pack'
def ADD_FUNC_PARAM_ENTRY(self):
print 'adding a function parameter entry.'
entry = Entry(self.level, '', 'parameter', '')
while isinstance(self.attr_buffer[-1], int):
entry.arraySize.insert(0, self.attr_buffer.pop())
if len(self.attr_buffer) > 1:
nameToken = self.attr_buffer.pop()
entry.name = nameToken.value
entry.type = self.attr_buffer.pop().value
# if variable already in scope give warning
if self.check_var_in_scope(entry):
self.warnings += "\nWarning: Parameter name already exists in scope: " + str(
nameToken)
if self.SymbolTable_stack:
self.SymbolTable_stack[-1].addEntry(entry)
# modify the type of the function entry two layers back
if len(self.SymbolTable_stack) > 1:
self.SymbolTable_stack[-2].append_param_to_func_entry_type(
self.SymbolTable_stack[-1], entry)