Files
Nasal-Interpreter/version2.0/nasal_runtime.h
Valk Richard Li e8ed4d6e58 update
2020-03-12 17:56:24 +08:00

989 lines
45 KiB
C++

#ifndef __NASAL_RUNTIME_H__
#define __NASAL_RUNTIME_H__
class nasal_runtime
{
private:
// global scope is a hash_map
// main_local_scope is used in main block
// when calling a loop or conditional expression
// when adding a new identifier into scope,you need to check if this identifier is already in the scope.
std::map<std::string,int> global_scope;
std::list<std::map<std::string,int> > main_local_scope;
// see detail of each enum type in function error_interrupt(const int)
enum runtime_error_type
{
__incorrect_head_of_tree,
__incorrect_head_of_func,
__undefined_identifier,
__not_callable_vector,
__not_callable_hash,
__not_numerable_str,
__error_value_type,
__stack_overflow,
};
int runtime_error_exit_mark;
void error_interrupt (const int,const int);
int number_generation (abstract_syntax_tree&);
int string_generation (abstract_syntax_tree&);
int vector_generation (std::list<std::map<std::string,int> >&,abstract_syntax_tree&);
int hash_generation (std::list<std::map<std::string,int> >&,abstract_syntax_tree&);
int function_generation(std::list<std::map<std::string,int> >&,abstract_syntax_tree&);
int calculation (std::list<std::map<std::string,int> >&,abstract_syntax_tree&);
int call_identifier (std::list<std::map<std::string,int> >&,abstract_syntax_tree&);
void definition (std::list<std::map<std::string,int> >&,abstract_syntax_tree&);
void loop_expr (std::list<std::map<std::string,int> >&,abstract_syntax_tree&);
void conditional (std::list<std::map<std::string,int> >&,abstract_syntax_tree&);
int func_proc (std::list<std::map<std::string,int> >&,abstract_syntax_tree&);
public:
nasal_runtime()
{
global_scope.clear();
nasal_gc.gc_init();
return;
}
~nasal_runtime()
{
global_scope.clear();
nasal_gc.gc_init();
return;
}
void main_proc(abstract_syntax_tree&);
};
void nasal_runtime::error_interrupt(const int type,const int line)
{
std::cout<<">> [Runtime] line "<<line<<": ";
switch (type)
{
case __incorrect_head_of_tree:
std::cout<<"lib hasn\'t been loaded."<<std::endl;break;
case __incorrect_head_of_func:
std::cout<<"called identifier is not a function."<<std::endl;break;
case __undefined_identifier:
std::cout<<"undefined identifier."<<std::endl;break;
case __not_callable_vector:
std::cout<<"called a value that is not a vector."<<std::endl;break;
case __not_callable_hash:
std::cout<<"called a value that is not a hash."<<std::endl;break;
case __not_numerable_str:
std::cout<<"this string is not a numerable one."<<std::endl;break;
case __stack_overflow:
std::cout<<"stack overflow."<<std::endl;break;
case __error_value_type:
std::cout<<"operator gets error value type."<<std::endl;break;
default:
std::cout<<"unknown error."<<std::endl;break;
}
runtime_error_exit_mark=type;
return;
}
int nasal_runtime::number_generation(abstract_syntax_tree& node)
{
int addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(addr).set_type(scalar_number);
nasal_gc.get_scalar(addr).get_number().set_number(node.get_var_number());
return addr;
}
int nasal_runtime::string_generation(abstract_syntax_tree& node)
{
int addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(addr).set_type(scalar_string);
nasal_gc.get_scalar(addr).get_string().set_string(node.get_var_string());
return addr;
}
int nasal_runtime::vector_generation(std::list<std::map<std::string,int> >& local_scope,abstract_syntax_tree& node)
{
int addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(addr).set_type(scalar_vector);
std::list<abstract_syntax_tree>::iterator call_node=node.get_children().end();
for(std::list<abstract_syntax_tree>::iterator i=node.get_children().begin();i!=node.get_children().end();++i)
{
int var_type=i->get_node_type();
if(var_type==__number)
nasal_gc.get_scalar(addr).get_vector().vec_push(number_generation(*i));
else if(var_type==__string)
nasal_gc.get_scalar(addr).get_vector().vec_push(string_generation(*i));
else if(var_type==__vector)
nasal_gc.get_scalar(addr).get_vector().vec_push(vector_generation(local_scope,*i));
else if(var_type==__hash)
nasal_gc.get_scalar(addr).get_vector().vec_push(hash_generation(local_scope,*i));
else if(var_type==__function)
nasal_gc.get_scalar(addr).get_vector().vec_push(function_generation(local_scope,*i));
else if(var_type==__id)
nasal_gc.get_scalar(addr).get_vector().vec_push(call_identifier(local_scope,*i));
else if(var_type==__add_operator || var_type==__sub_operator || var_type==__mul_operator || var_type==__div_operator || var_type==__link_operator ||
var_type==__cmp_equal || var_type==__cmp_less || var_type==__cmp_more || var_type==__cmp_not_equal || var_type==__cmp_less_or_equal || var_type==__cmp_more_or_equal ||
var_type==__and_operator || var_type==__or_operator || var_type==__ques_mark ||
var_type==__equal || var_type==__add_equal || var_type==__sub_equal || var_type==__div_equal || var_type==__mul_equal || var_type==__link_equal)
nasal_gc.get_scalar(addr).get_vector().vec_push(calculation(local_scope,*i));
else
{
call_node=i;
break;
}
}
for(;call_node!=node.get_children().end();++call_node)
{
;
}
return addr;
}
int nasal_runtime::hash_generation(std::list<std::map<std::string,int> >& local_scope,abstract_syntax_tree& node)
{
int addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(addr).set_type(scalar_hash);
nasal_gc.get_scalar(addr).get_hash().set_self_addr(addr);
std::list<abstract_syntax_tree>::iterator call_node=node.get_children().end();
for(std::list<abstract_syntax_tree>::iterator i=node.get_children().begin();i!=node.get_children().end();++i)
{
if(i->get_node_type()!=__hash_member)
{
call_node=i;
break;
}
else
{
std::string member_name=i->get_children().front().get_var_string();
int var_type=i->get_children().back().get_node_type();
if(var_type==__number)
nasal_gc.get_scalar(addr).get_hash().hash_push(member_name,number_generation(*i));
else if(var_type==__string)
nasal_gc.get_scalar(addr).get_hash().hash_push(member_name,string_generation(*i));
else if(var_type==__vector)
nasal_gc.get_scalar(addr).get_hash().hash_push(member_name,vector_generation(local_scope,*i));
else if(var_type==__hash)
nasal_gc.get_scalar(addr).get_hash().hash_push(member_name,hash_generation(local_scope,*i));
else if(var_type==__function)
{
// hash's function must get a parent_hash_addr
// this address will be given to identifier 'me'
nasal_gc.get_scalar(addr).get_hash().hash_push(member_name,function_generation(local_scope,i->get_children().back()));
nasal_gc.get_scalar(nasal_gc.get_scalar(addr).get_hash().get_hash_member(member_name)).get_function().set_parent_hash_addr(addr);
}
else if(var_type==__add_operator || var_type==__sub_operator || var_type==__mul_operator || var_type==__div_operator || var_type==__link_operator ||
var_type==__cmp_equal || var_type==__cmp_less || var_type==__cmp_more || var_type==__cmp_not_equal || var_type==__cmp_less_or_equal || var_type==__cmp_more_or_equal ||
var_type==__and_operator || var_type==__or_operator || var_type==__ques_mark ||
var_type==__equal || var_type==__add_equal || var_type==__sub_equal || var_type==__div_equal || var_type==__mul_equal || var_type==__link_equal)
nasal_gc.get_scalar(addr).get_hash().hash_push(member_name,calculation(local_scope,*i));
}
}
for(;call_node!=node.get_children().end();++call_node)
{
;
}
return addr;
}
int nasal_runtime::function_generation(std::list<std::map<std::string,int> >& local_scope,abstract_syntax_tree& node)
{
int addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(addr).set_type(scalar_function);
nasal_gc.get_scalar(addr).get_function().set_local_scope(local_scope);
// set
return addr;
}
int nasal_runtime::calculation(std::list<std::map<std::string,int> >& local_scope,abstract_syntax_tree& node)
{
// calculation will return a value that points to a new area in memory
int node_type=node.get_node_type();
if(node_type==__number)
return number_generation(node);
else if(node_type==__string)
return string_generation(node);
else if(node_type==__vector)
return vector_generation(local_scope,node);
else if(node_type==__hash)
return hash_generation(local_scope,node);
else if(node_type==__function)
return function_generation(local_scope,node);
else if(node_type==__id)
{
int ret=call_identifier(local_scope,node);
nasal_gc.reference_add(ret);
return ret;
// returned address is not a temporary one
// but after each calculation,the refcnt will -1
// so refcnt++ here
}
else if(node_type==__add_operator || node_type==__sub_operator || node_type==__mul_operator || node_type==__div_operator)
{
// scalar_nil cannot be used here
int ret_addr=-1;
int addr_1=-1;
int addr_2=-1;
if(node.get_children().size()==1)
{
// note: sub operator and nor operator may mean that this is unary calculation
addr_1=nasal_gc.gc_alloc();
nasal_gc.get_scalar(addr_1).set_type(scalar_number);
nasal_gc.get_scalar(addr_1).get_number().set_number(0);
addr_2=calculation(local_scope,node.get_children().front());
}
else
{
addr_1=calculation(local_scope,node.get_children().front());
addr_2=calculation(local_scope,node.get_children().back());
}
// check if the address is available
if(addr_1<0 || addr_2<0)
return -1;
int type_1=nasal_gc.get_scalar(addr_1).get_type();
int type_2=nasal_gc.get_scalar(addr_2).get_type();
double num_1=0;
double num_2=0;
if(type_1==scalar_number && type_2==scalar_number)
{
num_1=nasal_gc.get_scalar(addr_1).get_number().get_number();
num_2=nasal_gc.get_scalar(addr_2).get_number().get_number();
}
else if(type_1==scalar_number && type_2==scalar_string)
{
num_1=nasal_gc.get_scalar(addr_1).get_number().get_number();
std::string tmp_str=nasal_gc.get_scalar(addr_2).get_string().get_string();
if(check_numerable_string(tmp_str))
num_2=trans_string_to_number(tmp_str);
else
{
error_interrupt(__not_numerable_str,node.get_children().back().get_node_line());
return -1;
}
}
else if(type_1==scalar_string && type_2==scalar_number)
{
std::string tmp_str=nasal_gc.get_scalar(addr_1).get_string().get_string();
num_2=nasal_gc.get_scalar(addr_2).get_number().get_number();
if(check_numerable_string(tmp_str))
num_1=trans_string_to_number(tmp_str);
else
{
error_interrupt(__not_numerable_str,node.get_children().front().get_node_line());
return -1;
}
}
else if(type_1==scalar_string && type_2==scalar_string)
{
std::string tmp_str_1=nasal_gc.get_scalar(addr_1).get_string().get_string();
std::string tmp_str_2=nasal_gc.get_scalar(addr_2).get_string().get_string();
if(check_numerable_string(tmp_str_1) && check_numerable_string(tmp_str_2))
{
num_1=trans_string_to_number(tmp_str_1);
num_2=trans_string_to_number(tmp_str_2);
}
else
{
error_interrupt(__not_numerable_str,node.get_node_line());
return -1;
}
}
else
{
error_interrupt(__error_value_type,node.get_node_line());
return -1;
}
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
switch(node_type)
{
case __add_operator:nasal_gc.get_scalar(ret_addr).get_number().set_number(num_1+num_2);break;
case __sub_operator:nasal_gc.get_scalar(ret_addr).get_number().set_number(num_1-num_2);break;
case __mul_operator:nasal_gc.get_scalar(ret_addr).get_number().set_number(num_1*num_2);break;
case __div_operator:nasal_gc.get_scalar(ret_addr).get_number().set_number(num_1/num_2);break;
}
nasal_gc.reference_delete(addr_1);
nasal_gc.reference_delete(addr_2);
return ret_addr;
}
else if(node_type==__link_operator)
{
// scalar_nil cannot be used here
int ret_addr=-1;
int addr_1=calculation(local_scope,node.get_children().front());
int addr_2=calculation(local_scope,node.get_children().back());
// check if the address is available
if(addr_1<0 || addr_2<0)
return -1;
int type_1=nasal_gc.get_scalar(addr_1).get_type();
int type_2=nasal_gc.get_scalar(addr_2).get_type();
std::string str_1;
std::string str_2;
if(type_1==scalar_number && type_2==scalar_number)
{
str_1=trans_number_to_string(nasal_gc.get_scalar(addr_1).get_number().get_number());
str_2=trans_number_to_string(nasal_gc.get_scalar(addr_2).get_number().get_number());
}
else if(type_1==scalar_number && type_2==scalar_string)
{
str_1=trans_number_to_string(nasal_gc.get_scalar(addr_1).get_number().get_number());
str_2=nasal_gc.get_scalar(addr_2).get_string().get_string();
}
else if(type_1==scalar_string && type_2==scalar_number)
{
str_1=nasal_gc.get_scalar(addr_1).get_string().get_string();
str_2=trans_number_to_string(nasal_gc.get_scalar(addr_2).get_number().get_number());
}
else if(type_1==scalar_string && type_2==scalar_string)
{
str_1=nasal_gc.get_scalar(addr_1).get_string().get_string();
str_2=nasal_gc.get_scalar(addr_2).get_string().get_string();
}
else
{
error_interrupt(__error_value_type,node.get_node_line());
return -1;
}
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_string);
nasal_gc.get_scalar(ret_addr).get_string().set_string(str_1+str_2);
nasal_gc.reference_delete(addr_1);
nasal_gc.reference_delete(addr_2);
return ret_addr;
}
else if(node_type==__cmp_equal || node_type==__cmp_not_equal)
{
int ret_addr=-1;
int addr_1=calculation(local_scope,node.get_children().front());
int addr_2=calculation(local_scope,node.get_children().back());
// check if the address is available
if(addr_1<0 || addr_2<0)
return -1;
int type_1=nasal_gc.get_scalar(addr_1).get_type();
int type_2=nasal_gc.get_scalar(addr_2).get_type();
// note: cmp operator change strings into numbers then making comparation
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
if(type_1==scalar_number && type_2==scalar_number)
{
double num_1=nasal_gc.get_scalar(addr_1).get_number().get_number();
double num_2=nasal_gc.get_scalar(addr_2).get_number().get_number();
nasal_gc.get_scalar(ret_addr).get_number().set_number((double(node_type==__cmp_equal?num_1==num_2:num_1!=num_2)));
}
else if(type_1==scalar_number && type_2==scalar_string)
{
double num_1=nasal_gc.get_scalar(addr_1).get_number().get_number();
double num_2=0;
std::string tmp_str=nasal_gc.get_scalar(addr_2).get_string().get_string();
if(check_numerable_string(tmp_str))
num_2=trans_string_to_number(tmp_str);
else
{
error_interrupt(__not_numerable_str,node.get_children().back().get_node_line());
return -1;
}
nasal_gc.get_scalar(ret_addr).get_number().set_number((double(node_type==__cmp_equal?num_1==num_2:num_1!=num_2)));
}
else if(type_1==scalar_string && type_2==scalar_number)
{
double num_1=0;
double num_2=nasal_gc.get_scalar(addr_2).get_number().get_number();
std::string tmp_str=nasal_gc.get_scalar(addr_1).get_string().get_string();
if(check_numerable_string(tmp_str))
num_1=trans_string_to_number(tmp_str);
else
{
error_interrupt(__not_numerable_str,node.get_children().front().get_node_line());
return -1;
}
nasal_gc.get_scalar(ret_addr).get_number().set_number((double(node_type==__cmp_equal?num_1==num_2:num_1!=num_2)));
}
else if(type_1==scalar_string && type_2==scalar_string)
{
std::string str_1=nasal_gc.get_scalar(addr_1).get_string().get_string();
std::string str_2=nasal_gc.get_scalar(addr_2).get_string().get_string();
nasal_gc.get_scalar(ret_addr).get_number().set_number((double(node_type==__cmp_equal?str_1==str_2:str_1!=str_2)));
}
else if(type_1==scalar_vector && type_2==scalar_vector)
nasal_gc.get_scalar(ret_addr).get_number().set_number((double(node_type==__cmp_equal?addr_1==addr_2:addr_1!=addr_2)));
else if(type_1==scalar_hash && type_2==scalar_hash)
nasal_gc.get_scalar(ret_addr).get_number().set_number((double(node_type==__cmp_equal?addr_1==addr_2:addr_1!=addr_2)));
else if(type_1==scalar_function && type_2==scalar_function)
nasal_gc.get_scalar(ret_addr).get_number().set_number((double(node_type==__cmp_equal?addr_1==addr_2:addr_1!=addr_2)));
else if(type_1!=type_2)
nasal_gc.get_scalar(ret_addr).get_number().set_number((double(node_type!=__cmp_equal)));
else
{
error_interrupt(__error_value_type,node.get_node_line());
return -1;
}
nasal_gc.reference_delete(addr_1);
nasal_gc.reference_delete(addr_2);
return ret_addr;
}
else if(node_type==__cmp_less || node_type==__cmp_less_or_equal || node_type==__cmp_more || node_type==__cmp_more_or_equal)
{
int ret_addr=-1;
int addr_1=calculation(local_scope,node.get_children().front());
int addr_2=calculation(local_scope,node.get_children().back());
// check if the address is available
if(addr_1<0 || addr_2<0)
return -1;
int type_1=nasal_gc.get_scalar(addr_1).get_type();
int type_2=nasal_gc.get_scalar(addr_2).get_type();
// note: cmp operator change strings into numbers then making comparation
// only numbers and strings can take these calculations
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
if(type_1==scalar_number && type_2==scalar_number)
{
double num_1=nasal_gc.get_scalar(addr_1).get_number().get_number();
double num_2=nasal_gc.get_scalar(addr_2).get_number().get_number();
switch(node_type)
{
case __cmp_less:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1<num_2)));break;
case __cmp_less_or_equal:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1<=num_2)));break;
case __cmp_more:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1>num_2)));break;
case __cmp_more_or_equal:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1>=num_2)));break;
}
}
else if(type_1==scalar_number && type_2==scalar_string)
{
double num_1=nasal_gc.get_scalar(addr_1).get_number().get_number();
double num_2=0;
std::string tmp_str=nasal_gc.get_scalar(addr_2).get_string().get_string();
if(check_numerable_string(tmp_str))
num_2=trans_string_to_number(tmp_str);
else
{
error_interrupt(__not_numerable_str,node.get_children().back().get_node_line());
return -1;
}
switch(node_type)
{
case __cmp_less:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1<num_2)));break;
case __cmp_less_or_equal:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1<=num_2)));break;
case __cmp_more:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1>num_2)));break;
case __cmp_more_or_equal:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1>=num_2)));break;
}
}
else if(type_1==scalar_string && type_2==scalar_number)
{
double num_1=0;
double num_2=nasal_gc.get_scalar(addr_2).get_number().get_number();
std::string tmp_str=nasal_gc.get_scalar(addr_1).get_string().get_string();
if(check_numerable_string(tmp_str))
num_1=trans_string_to_number(tmp_str);
else
{
error_interrupt(__not_numerable_str,node.get_children().front().get_node_line());
return -1;
}
switch(node_type)
{
case __cmp_less:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1<num_2)));break;
case __cmp_less_or_equal:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1<=num_2)));break;
case __cmp_more:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1>num_2)));break;
case __cmp_more_or_equal:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num_1>=num_2)));break;
}
}
else if(type_1==scalar_string && type_2==scalar_string)
{
std::string str_1=nasal_gc.get_scalar(addr_1).get_string().get_string();
std::string str_2=nasal_gc.get_scalar(addr_2).get_string().get_string();
switch(node_type)
{
case __cmp_less:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(str_1<str_2)));break;
case __cmp_less_or_equal:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(str_1<=str_2)));break;
case __cmp_more:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(str_1>str_2)));break;
case __cmp_more_or_equal:nasal_gc.get_scalar(ret_addr).get_number().set_number((double(str_1>=str_2)));break;
}
}
else
{
error_interrupt(__error_value_type,node.get_node_line());
return -1;
}
nasal_gc.reference_delete(addr_1);
nasal_gc.reference_delete(addr_2);
return ret_addr;
}
else if(node_type==__equal)
{
;
}
else if(node_type==__add_equal || node_type==__sub_equal || node_type==__mul_equal || node_type==__div_equal)
{
// scalar_nil also cannot be used here
// += -= *= /= ~= only works on scalar_number and scalar_string
int id_addr=calculation(local_scope,node.get_children().front());
int value_addr=calculation(local_scope,node.get_children().back());
if(id_addr<0 || value_addr<0)
return -1;
int type_1=nasal_gc.get_scalar(id_addr).get_type();
int type_2=nasal_gc.get_scalar(value_addr).get_type();
if(type_1==scalar_number && type_2==scalar_number)
{
double num_1=nasal_gc.get_scalar(id_addr).get_number().get_number();
double num_2=nasal_gc.get_scalar(value_addr).get_number().get_number();
switch(node_type)
{
case __add_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1+num_2);break;
case __sub_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1-num_2);break;
case __mul_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1*num_2);break;
case __div_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1/num_2);break;
}
}
else if(type_1==scalar_number && type_2==scalar_string)
{
double num_1=nasal_gc.get_scalar(id_addr).get_number().get_number();
double num_2=0;
std::string tmp_str=nasal_gc.get_scalar(value_addr).get_string().get_string();
if(check_numerable_string(tmp_str))
num_2=trans_string_to_number(tmp_str);
else
{
error_interrupt(__not_numerable_str,node.get_children().back().get_node_line());
return -1;
}
switch(node_type)
{
case __add_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1+num_2);break;
case __sub_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1-num_2);break;
case __mul_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1*num_2);break;
case __div_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1/num_2);break;
}
}
else if(type_1==scalar_string && type_2==scalar_number)
{
double num_1=0;
double num_2=nasal_gc.get_scalar(value_addr).get_number().get_number();
std::string tmp_str=nasal_gc.get_scalar(id_addr).get_string().get_string();
if(check_numerable_string(tmp_str))
num_1=trans_string_to_number(tmp_str);
else
{
error_interrupt(__not_numerable_str,node.get_children().front().get_node_line());
return -1;
}
nasal_gc.get_scalar(id_addr).get_string().set_clear();
nasal_gc.get_scalar(id_addr).set_type(scalar_number);
switch(node_type)
{
case __add_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1+num_2);break;
case __sub_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1-num_2);break;
case __mul_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1*num_2);break;
case __div_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1/num_2);break;
}
}
else if(type_1==scalar_string && type_2==scalar_string)
{
double num_1=0;
double num_2=0;
std::string tmp_str_1=nasal_gc.get_scalar(id_addr).get_string().get_string();
std::string tmp_str_2=nasal_gc.get_scalar(value_addr).get_string().get_string();
if(check_numerable_string(tmp_str_1) && check_numerable_string(tmp_str_2))
{
num_1=trans_string_to_number(tmp_str_1);
num_2=trans_string_to_number(tmp_str_2);
}
else
{
error_interrupt(__not_numerable_str,node.get_node_line());
return -1;
}
nasal_gc.get_scalar(id_addr).get_string().set_clear();
nasal_gc.get_scalar(id_addr).set_type(scalar_number);
switch(node_type)
{
case __add_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1+num_2);break;
case __sub_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1-num_2);break;
case __mul_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1*num_2);break;
case __div_equal:nasal_gc.get_scalar(id_addr).get_number().set_number(num_1/num_2);break;
}
}
else
{
error_interrupt(__error_value_type,node.get_node_line());
return -1;
}
nasal_gc.reference_delete(value_addr);
return id_addr;
}
else if(node_type==__link_equal)
{
// scalar_nil also cannot be used here
// += -= *= /= ~= only works on scalar_number and scalar_string
int id_addr=calculation(local_scope,node.get_children().front());
int value_addr=calculation(local_scope,node.get_children().back());
if(id_addr<0 || value_addr<0)
return -1;
int type_1=nasal_gc.get_scalar(id_addr).get_type();
int type_2=nasal_gc.get_scalar(value_addr).get_type();
double num_1,num_2;
std::string str_1,str_2;
if(type_1==scalar_number && type_2==scalar_number)
{
num_1=nasal_gc.get_scalar(id_addr).get_number().get_number();
num_2=nasal_gc.get_scalar(value_addr).get_number().get_number();
str_1=trans_number_to_string(num_1);
str_2=trans_number_to_string(num_2);
nasal_gc.get_scalar(id_addr).get_number().set_clear();
nasal_gc.get_scalar(id_addr).set_type(scalar_string);
nasal_gc.get_scalar(id_addr).get_string().set_string(str_1+str_2);
}
else if(type_1==scalar_number && type_2==scalar_string)
{
num_1=nasal_gc.get_scalar(id_addr).get_number().get_number();
str_1=trans_number_to_string(num_1);
str_2=nasal_gc.get_scalar(value_addr).get_string().get_string();
nasal_gc.get_scalar(id_addr).get_number().set_clear();
nasal_gc.get_scalar(id_addr).set_type(scalar_string);
nasal_gc.get_scalar(id_addr).get_string().set_string(str_1+str_2);
}
else if(type_1==scalar_string && type_2==scalar_number)
{
num_2=nasal_gc.get_scalar(value_addr).get_number().get_number();
str_1=nasal_gc.get_scalar(id_addr).get_string().get_string();
str_2=trans_number_to_string(num_2);
nasal_gc.get_scalar(id_addr).get_string().set_string(str_1+str_2);
}
else if(type_1==scalar_string && type_2==scalar_string)
{
str_1=nasal_gc.get_scalar(id_addr).get_string().get_string();
str_2=nasal_gc.get_scalar(value_addr).get_string().get_string();
nasal_gc.get_scalar(id_addr).get_string().set_string(str_1+str_2);
}
else
{
error_interrupt(__error_value_type,node.get_node_line());
return -1;
}
nasal_gc.reference_delete(value_addr);
return id_addr;
}
else if(node_type==__and_operator)
{
// and will return the last value that is not null
// if and gets a null,and returns 0
// vector,hash,function is not allowed here
int ret_addr=-1;
int addr=calculation(local_scope,node.get_children().front());
if(addr<0)
return -1;
int type=nasal_gc.get_scalar(addr).get_type();
if(type==scalar_number)
{
double num=nasal_gc.get_scalar(addr).get_number().get_number();
if(num==0)
{
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
nasal_gc.get_scalar(ret_addr).get_number().set_number(0);
nasal_gc.reference_delete(addr);
return ret_addr;
}
else
nasal_gc.reference_delete(addr);
}
else if(type==scalar_string)
{
std::string str=nasal_gc.get_scalar(addr).get_string().get_string();
if(str.length()==0 || (check_numerable_string(str) && trans_string_to_number(str)==0))
{
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
nasal_gc.get_scalar(ret_addr).get_number().set_number(0);
nasal_gc.reference_delete(addr);
return ret_addr;
}
else
nasal_gc.reference_delete(addr);
}
else
{
error_interrupt(__error_value_type,node.get_children().front().get_node_line());
return -1;
}
addr=calculation(local_scope,node.get_children().back());
if(addr<0)
return -1;
type=nasal_gc.get_scalar(addr).get_type();
if(type==scalar_number)
{
double num=nasal_gc.get_scalar(addr).get_number().get_number();
if(num==0)
{
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
nasal_gc.get_scalar(ret_addr).get_number().set_number(0);
nasal_gc.reference_delete(addr);
return ret_addr;
}
else
ret_addr=addr;
}
else if(type==scalar_string)
{
std::string str=nasal_gc.get_scalar(addr).get_string().get_string();
if(str.length()==0 || (check_numerable_string(str) && trans_string_to_number(str)==0))
{
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
nasal_gc.get_scalar(ret_addr).get_number().set_number(0);
nasal_gc.reference_delete(addr);
return ret_addr;
}
else
ret_addr=addr;
}
else
{
error_interrupt(__error_value_type,node.get_children().front().get_node_line());
return -1;
}
return ret_addr;
}
else if(node_type==__or_operator)
{
// or will return the first value that is not null
// if or gets all null(0,'0',nil,"0",'',""),or returns 0
// vector,hash,function is not allowed here
int ret_addr=-1;
int addr=calculation(local_scope,node.get_children().front());
if(addr<0)
return -1;
int type=nasal_gc.get_scalar(addr).get_type();
if(type==scalar_number)
{
double num=nasal_gc.get_scalar(addr).get_number().get_number();
if(num!=0)
return addr;
else
nasal_gc.reference_delete(addr);
}
else if(type==scalar_string)
{
std::string str=nasal_gc.get_scalar(addr).get_string().get_string();
if(str.length()!=0 && (!check_numerable_string(str) || !trans_string_to_number(str)==0))
return addr;
else
nasal_gc.reference_delete(addr);
}
else
{
error_interrupt(__error_value_type,node.get_children().front().get_node_line());
return -1;
}
addr=calculation(local_scope,node.get_children().back());
if(addr<0)
return -1;
type=nasal_gc.get_scalar(addr).get_type();
if(type==scalar_number)
{
double num=nasal_gc.get_scalar(addr).get_number().get_number();
if(num==0)
{
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
nasal_gc.get_scalar(ret_addr).get_number().set_number(0);
nasal_gc.reference_delete(addr);
return ret_addr;
}
else
return addr;
}
else if(type==scalar_string)
{
std::string str=nasal_gc.get_scalar(addr).get_string().get_string();
if(str.length()==0 || (check_numerable_string(str) && trans_string_to_number(str)==0))
{
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
nasal_gc.get_scalar(ret_addr).get_number().set_number(0);
nasal_gc.reference_delete(addr);
return ret_addr;
}
else
return addr;
}
else
{
error_interrupt(__error_value_type,node.get_children().front().get_node_line());
return -1;
}
return -1;
}
else if(node_type==__nor_operator)
{
// nor will return 0 if the value is not null
// nor will return 1 if the value is null(0,nil,'0',"0",'',"")
// vector,hash,function is not allowed here
int ret_addr=-1;
int addr=calculation(local_scope,node.get_children().front());
int type=nasal_gc.get_scalar(addr).get_type();
if(type==scalar_number)
{
double num=nasal_gc.get_scalar(addr).get_number().get_number();
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
nasal_gc.get_scalar(ret_addr).get_number().set_number((double(num==0)));
}
else if(type==scalar_string)
{
std::string str=nasal_gc.get_scalar(addr).get_string().get_string();
ret_addr=nasal_gc.gc_alloc();
nasal_gc.get_scalar(ret_addr).set_type(scalar_number);
if(str.length()==0 || (check_numerable_string(str) && trans_string_to_number(str)==0))
nasal_gc.get_scalar(ret_addr).get_number().set_number(1);
else
nasal_gc.get_scalar(ret_addr).get_number().set_number(0);
}
else
{
error_interrupt(__error_value_type,node.get_children().front().get_node_line());
return -1;
}
nasal_gc.reference_delete(addr);
return ret_addr;
}
return -1;
}
int nasal_runtime::call_identifier(std::list<std::map<std::string,int> >& local_scope,abstract_syntax_tree& node)
{
int addr=-1;
std::string tmp_id_name=node.get_var_name();
if(global_scope.find(tmp_id_name)!=global_scope.end())
addr=global_scope[tmp_id_name];
for(std::list<std::map<std::string,int> >::iterator iter=local_scope.begin();iter!=local_scope.end();++iter)
if(iter->find(tmp_id_name)!=iter->end())
addr=(*iter)[tmp_id_name];
if(addr<0)
{
error_interrupt(__undefined_identifier,node.get_node_line());
return -1;
}
for(std::list<abstract_syntax_tree>::iterator iter=node.get_children().begin();iter!=node.get_children().end();++iter)
{
int node_type=iter->get_node_type();
if(node_type==__call_vector)
;
else if(node_type==__call_hash)
;
else if(node_type==__call_function)
;
else
;
}
return addr;
}
void nasal_runtime::definition(std::list<std::map<std::string,int> >& local_scope,abstract_syntax_tree& node)
{
if(local_scope.empty())
;
return;
}
void nasal_runtime::loop_expr(std::list<std::map<std::string,int> >& local_scope,abstract_syntax_tree& node)
{
std::map<std::string,int> new_scope;
local_scope.push_back(new_scope);
return;
}
void nasal_runtime::conditional(std::list<std::map<std::string,int> >& local_scope,abstract_syntax_tree& node)
{
std::map<std::string,int> new_scope;
local_scope.push_back(new_scope);
return;
}
int nasal_runtime::func_proc(std::list<std::map<std::string,int> >& local_scope,abstract_syntax_tree& func_root)
{
if(func_root.get_node_type()!=__function)
{
error_interrupt(__incorrect_head_of_func,func_root.get_node_line());
return -1;
}
std::map<std::string,int> new_scope;
local_scope.push_back(new_scope);
// loading parameters
for(std::list<abstract_syntax_tree>::iterator iter=func_root.get_children().front().get_children().begin();iter!=func_root.get_children().front().get_children().end();++iter)
{
}
// process
for(std::list<abstract_syntax_tree>::iterator iter=func_root.get_children().back().get_children().begin();iter!=func_root.get_children().back().get_children().end();++iter)
{
// use local value node_type to avoid calling function too many times.
int node_type=iter->get_node_type();
if(node_type==__number || node_type==__string)
;
// only number or string
else if(node_type==__id)
this->call_identifier(local_scope,*iter);
else if(node_type==__vector)
this->vector_generation(local_scope,*iter);
else if(node_type==__hash)
this->hash_generation(local_scope,*iter);
else if(node_type==__function)
this->function_generation(local_scope,*iter);
else if(node_type==__add_operator || node_type==__sub_operator || node_type==__mul_operator || node_type==__div_operator || node_type==__link_operator ||
node_type==__cmp_equal || node_type==__cmp_less || node_type==__cmp_more || node_type==__cmp_not_equal || node_type==__cmp_less_or_equal || node_type==__cmp_more_or_equal ||
node_type==__and_operator || node_type==__or_operator || node_type==__ques_mark ||
node_type==__equal || node_type==__add_equal || node_type==__sub_equal || node_type==__div_equal || node_type==__mul_equal || node_type==__link_equal)
this->calculation(local_scope,*iter);
else if(node_type==__definition)
this->definition(local_scope,*iter);
else if(node_type==__conditional)
this->conditional(local_scope,*iter);
else if((node_type==__while) || (node_type==__for) || (node_type==__foreach) || (node_type==__forindex))
this->loop_expr(local_scope,*iter);
if(runtime_error_exit_mark>=0)
break;
}
return -1;
}
void nasal_runtime::main_proc(abstract_syntax_tree& root)
{
time_t begin_time,end_time;
begin_time=std::time(NULL);
// initializing global scope and nasal_gc
// runtime_error_exit_mark is set to -1,if runtime_error_exit_mark >=0,this means an error occurred
global_scope.clear();
nasal_gc.gc_init();
runtime_error_exit_mark=-1;
if(root.get_node_type()!=__root)
{
error_interrupt(__incorrect_head_of_tree,root.get_node_line());
return;
}
for(std::list<abstract_syntax_tree>::iterator iter=root.get_children().begin();iter!=root.get_children().end();++iter)
{
// use local value node_type to avoid calling function too many times.
int node_type=iter->get_node_type();
if(node_type==__number || node_type==__string)
;
else if(node_type==__id)
this->call_identifier(main_local_scope,*iter);
else if(node_type==__vector)
this->vector_generation(main_local_scope,*iter);
else if(node_type==__hash)
this->hash_generation(main_local_scope,*iter);
else if(node_type==__function)
this->function_generation(main_local_scope,*iter);
else if(node_type==__add_operator || node_type==__sub_operator || node_type==__mul_operator || node_type==__div_operator || node_type==__link_operator ||
node_type==__cmp_equal || node_type==__cmp_less || node_type==__cmp_more || node_type==__cmp_not_equal || node_type==__cmp_less_or_equal || node_type==__cmp_more_or_equal ||
node_type==__and_operator || node_type==__or_operator || node_type==__ques_mark ||
node_type==__equal || node_type==__add_equal || node_type==__sub_equal || node_type==__div_equal || node_type==__mul_equal || node_type==__link_equal)
this->calculation(main_local_scope,*iter);
else if(node_type==__definition)
this->definition(main_local_scope,*iter);
else if(node_type==__conditional)
this->conditional(main_local_scope,*iter);
else if((node_type==__while) || (node_type==__for) || (node_type==__foreach) || (node_type==__forindex))
this->loop_expr(main_local_scope,*iter);
if(runtime_error_exit_mark>=0)
break;
}
end_time=std::time(NULL);
std::cout<<">> [Runtime] process exited after "<<end_time-begin_time<<" s ."<<std::endl;
return;
}
#endif