def p_parameters(p):
'''parameters : LP para_decl_list RP
| empty'''
if len(p) == 4:
p[0] = Node("parameters", [p[2]])
p[0].list = p[2].list
else:
p[0] = Node("parameters", [p[1]])
p[0].list = []
def p_name_list(p):
'''name_list : name_list COMMA NAME
| NAME'''
if len(p) == 4:
p[0] = Node("name_list", [p[1]])
p[0].list = p[1].list + [p[3]]
else:
p[0] = Node("name_list", [p[1]])
p[0].list = [p[1]]
def p_field_decl_list(p):
'''field_decl_list : field_decl_list field_decl
| field_decl'''
if len(p) == 3:
p[0] = Node("field_decl_list", [p[1], p[2]])
p[0].list = p[1].list + p[2].list
else:
p[0] = Node("field_decl_list", [p[1]])
p[0].list = p[1].list
def p_args_list(p):
"""args_list : args_list COMMA expression
| expression"""
if len(p) == 4:
p[0] = Node("args_list", [p[1], p[3]])
p[0].list = p[1].list + [p[3]]
elif len(p) == 2:
p[0] = Node("expression", [p[1]])
p[0].list = [p[1]]
def p_para_decl_list(p):
'''para_decl_list : para_decl_list SEMI para_type_list
| para_type_list'''
if len(p) == 4:
p[0] = Node("para_decl_list", [p[1], p[3]])
p[0].list = p[1].list + p[3].list
else:
p[0] = Node("para_decl_list", [p[1]])
p[0].list = p[1].list
def p_expression_list(p):
'''expression_list : expression_list COMMA expression
| expression'''
if len(p) == 4:
p[0] = Node("expression_list-expression_list", [p[1], p[3]])
if hasattr(p[3], 'symbol'):
p[0].list = p[1].list + [p[3].symbol]
else:
p[0].list = p[1].list + [p[3].value]
elif len(p) == 2:
p[0] = Node("expression_list-expression", [p[1]])
if hasattr(p[1], 'symbol'):
p[0].list = [p[1].symbol]
else:
p[0].list = [p[1].value]
def p_val_para_list(p):
# 值传递
'''val_para_list : name_list
'''
p[0] = Node("val_para_list", [p[1]])
p[0].list = p[1].list
def p_var_para_list(p):
'''var_para_list : VAR name_list'''
# TODO 引用传递
p[0] = Node("var_para_list", [p[2]])
p[0].list = p[2].list
def p_para_type_list_2(p):
'''para_type_list : val_para_list COLON simple_type_decl'''
p[0] = Node("para_type_list", [p[1], p[3]])
p[0].list = [(name, p[3].type, False) for name in p[1].list]
def p_field_decl(p):
'''field_decl : name_list COLON type_decl SEMI'''
# 0 1 2 3 4
p[0] = Node("field_decl", [p[1], p[3]])
p[0].list = [(name, p[3].type) for name in p[1].list]
