def semantic_checks(tree):
semdata = SemData()
semdata.variable_def = []
semdata.parameters = {}
semdata.funcs = {}
visit_tree(tree, before_fun, after_fun, semdata)
return semdata
def semantic_checks(tree, semdata):
'''Run semantic checks
Note: Some semantic checks are run during interpretation,
since e.g. variable value expressions need to be evaluated
before the values can be checked.
'''
# "Data collection phase":
visit_tree(tree, create_symbol_table, None, semdata)
def semantic_checks(tree, semdata):
'''run all semantic checks'''
# Initialize 'oper +' level count to 0
semdata.plus_level = 0
# Gather information
visit_tree(tree, add_vars, None, semdata)
visit_tree(tree, check_vars, None, semdata)
# Check stupid things
visit_tree(tree, check_literals, None, semdata)
visit_tree(tree, check_plus_level_before, check_plus_level_after, semdata)
def semantic_checks(tree, semdata):
semdata.plus_level = 0
visit_tree(tree, add_vars, None, semdata)
def semantic_checks(tree, semdata):
'''run all semantic checks'''
semdata.stack = []
semdata.stack_size = 0 # Initially stack is empty
semdata.old_stack_sizes = [] # Initially no old stacks
visit_tree(tree, check_everything, None, semdata)