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Add one-operator +-! & add new element in ast_node

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This commit is contained in:
Valk Richard Li
2019-10-07 09:42:02 -05:00
committed by GitHub
parent b1d7e4b938
commit a9ca813b72
4 changed files with 100 additions and 9 deletions
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version1.0/ast.h
+42 -1
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@@ -6,6 +6,7 @@ class abstract_syntax_tree
protected:
int ast_node_type;
std::list<abstract_syntax_tree> statement_list;
std::list<abstract_syntax_tree> children;
double var_number;
std::string var_string;
public:
@@ -13,25 +14,65 @@ class abstract_syntax_tree
{
ast_node_type=__root;
statement_list.clear();
children.clear();
var_number=0;
var_string="";
}
abstract_syntax_tree(const abstract_syntax_tree& temp)
{
ast_node_type=temp.ast_node_type;
statement_list=temp.statement_list;
if(temp.statement_list.empty())
statement_list.clear();
else
statement_list=temp.statement_list;
if(temp.children.empty())
children.clear();
else
children=temp.children;
var_number=temp.var_number;
var_string=temp.var_string;
}
// for statement block
void set_block()
{
ast_node_type=__block;
return;
}
void add_statement(abstract_syntax_tree statement_head)
{
statement_list.push_back(statement_head);
return;
}
// for sub-tree node operator
void set_two_operator(const int operator_type,abstract_syntax_tree f_child,abstract_syntax_tree s_child)
{
ast_node_type=operator_type;
children.push_back(f_child);
children.push_back(s_child);
return;
}
void set_one_operator(const int operator_type,abstract_syntax_tree f_child)
{
ast_node_type=operator_type;
children.push_back(f_child);
return;
}
// for leaf node string
void set_node_to_string(std::string& str)
{
ast_node_type=__string;
var_string=str;
return;
}
// for leaf node number
void set_node_to_number(std::string& str)
{
ast_node_type=__number;
if(str=="nil")
{
var_number=0;
return;
}
if((int)str.length()>2 && (str[1]=='x' || str[1]=='o'))
{
if(str[1]=='x')