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Nasal-Interpreter
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Finished part of AST

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Valk Richard Li 2019-10-12 21:51:03 +08:00 committed by GitHub
parent 3732fa7a68
commit dffb943c3f
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2 changed files with 32 additions and 23 deletions
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32
version1.0/ast.h
View File

@ -58,42 +58,40 @@ class abstract_syntax_tree
void print_ast_node(int tab_num) void print_ast_node(int tab_num)
{ {
for(int i=0;i<tab_num;++i) for(int i=0;i<tab_num;++i)
std::cout<<" "; std::cout<<" ";
if(ast_node_type==__number) if(ast_node_type==__number)
{ {
std::cout<<"[ Number:"; std::cout<<"[Number:";
std::cout<<var_number; std::cout<<var_number;
std::cout<<" ]"<<std::endl; std::cout<<"]"<<std::endl;
return; return;
} }
else if(ast_node_type==__string) else if(ast_node_type==__string)
{ {
std::cout<<"[ String:"<<var_string<<" ]"<<std::endl; std::cout<<"[String:"<<var_string<<"]"<<std::endl;
return; return;
} }
std::cout<<"{ [ Type:"; std::cout<<"{ [Type:";
print_token(ast_node_type); print_token(ast_node_type);
std::cout<<" ]"<<std::endl; std::cout<<"]"<<std::endl;
if(!children.empty()) if(!children.empty())
{ {
for(int i=0;i<tab_num;++i) for(int i=0;i<tab_num;++i)
std::cout<<" "; std::cout<<" ";
std::cout<<"[ Children ]"<<std::endl; std::cout<<" [Children]"<<std::endl;
for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i) for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
i->print_ast_node(tab_num+1); i->print_ast_node(tab_num+1);
std::cout<<std::endl;
} }
if(!statement_list.empty()) if(!statement_list.empty())
{ {
for(int i=0;i<tab_num;++i) for(int i=0;i<tab_num;++i)
std::cout<<" "; std::cout<<" ";
std::cout<<"[ Statement(s) ]"<<std::endl; std::cout<<" [Statement(s)]"<<std::endl;
for(std::list<abstract_syntax_tree>::iterator i=statement_list.begin();i!=statement_list.end();++i) for(std::list<abstract_syntax_tree>::iterator i=statement_list.begin();i!=statement_list.end();++i)
i->print_ast_node(tab_num+1); i->print_ast_node(tab_num+1);
std::cout<<std::endl;
} }
for(int i=0;i<tab_num;++i) for(int i=0;i<tab_num;++i)
std::cout<<" "; std::cout<<" ";
std::cout<<"}"<<std::endl; std::cout<<"}"<<std::endl;
return; return;
} }
@ -106,11 +104,17 @@ class abstract_syntax_tree
// for definition // for definition
void set_definition_expr(std::string& name,abstract_syntax_tree var_content) void set_definition_expr(std::string& name,abstract_syntax_tree var_content)
{ {
ast_node_type=__var; ast_node_type=__definition;
id_name=name; id_name=name;
children.push_back(var_content); children.push_back(var_content);
return; return;
} }
// for assignment
void set_assignment_expr()
{
ast_node_type=__assignment;
return;
}
// for if // for if
void set_if_expr(abstract_syntax_tree condition,abstract_syntax_tree statements) void set_if_expr(abstract_syntax_tree condition,abstract_syntax_tree statements)
{ {

23
version1.0/ast_generator.h
View File

@ -272,7 +272,7 @@ abstract_syntax_tree generator::definition_expr()
} }
else if(this_token.type==__id) else if(this_token.type==__id)
{ {
; id_name=this_token.content;
} }
get_token(); get_token();
if(this_token.type==__semi) if(this_token.type==__semi)
@ -286,16 +286,16 @@ abstract_syntax_tree generator::definition_expr()
t.type=__semi; t.type=__semi;
switch(this_token.type) switch(this_token.type)
{ {
case __number:number_begin_expr();break; case __number:node.set_definition_expr(id_name,number_begin_expr());break;
case __string:string_begin_expr();break; case __string:node.set_definition_expr(id_name,string_begin_expr());break;
case __id:identifier_begin_expr();break; case __id:node.set_definition_expr(id_name,identifier_begin_expr());break;
case __func:function_generate_expr();parse.push(t);break; case __func:node.set_definition_expr(id_name,function_generate_expr());parse.push(t);break;
case __add_operator: case __add_operator:
case __sub_operator: case __sub_operator:
case __nor_operator:one_operator_expr();break; case __nor_operator:node.set_definition_expr(id_name,one_operator_expr());break;
case __left_bracket:list_generate_expr();break; case __left_bracket:node.set_definition_expr(id_name,list_generate_expr());break;
case __left_brace:hash_generate_expr();break; case __left_brace:node.set_definition_expr(id_name,hash_generate_expr());break;
case __left_curve:in_curve_calc_expr();break; case __left_curve:node.set_definition_expr(id_name,in_curve_calc_expr());break;
default:break; default:break;
} }
return node; return node;
@ -318,6 +318,7 @@ abstract_syntax_tree generator::assignment_expr()
case __left_curve:in_curve_calc_expr();break; case __left_curve:in_curve_calc_expr();break;
default:break; default:break;
} }
node.set_assignment_expr();
return node; return node;
} }
bool generator::else_if_check() bool generator::else_if_check()
@ -739,6 +740,7 @@ abstract_syntax_tree generator::loop_expr()
} }
} }
} }
node.set_node_to_loop();
return node; return node;
} }
abstract_syntax_tree generator::continue_break_expr() abstract_syntax_tree generator::continue_break_expr()
@ -955,6 +957,7 @@ abstract_syntax_tree generator::call_list_expr()
default:parse.push(this_token);break; default:parse.push(this_token);break;
} }
} }
node.set_node_to_list_search();
return node; return node;
} }
abstract_syntax_tree generator::call_function_expr() abstract_syntax_tree generator::call_function_expr()
@ -986,6 +989,8 @@ abstract_syntax_tree generator::call_function_expr()
case __dot:call_hash_expr();break; case __dot:call_hash_expr();break;
default:parse.push(this_token);break; default:parse.push(this_token);break;
} }
node.set_node_to_call_function();
return node; return node;
} }
abstract_syntax_tree generator::call_hash_expr() abstract_syntax_tree generator::call_hash_expr()