forked from xxq250/Nasal-Interpreter
ValKmjolnir
850 lines
21 KiB
C++
850 lines
21 KiB
C++
#ifndef __NASAL_VM_H__
|
|
#define __NASAL_VM_H__
|
|
|
|
class nasal_vm
|
|
{
|
|
private:
|
|
/* reference from nasal_gc */
|
|
nasal_val**& stack_top;// stack top
|
|
/* values of nasal_vm */
|
|
uint32_t pc; // program counter
|
|
bool loop_mark;// when mark is false,break the main loop
|
|
std::stack<int> ret; // ptr stack stores address for function to return
|
|
std::stack<int> counter; // iterator stack for forindex/foreach
|
|
std::vector<std::string> str_table;// symbols used in process
|
|
std::vector<void (nasal_vm::*)()>
|
|
exec_code;//function pointer
|
|
std::vector<uint32_t> imm; // immediate number
|
|
nasal_val** mem_addr; // used for mem_call
|
|
nasal_gc gc; // garbage collector
|
|
|
|
void die(std::string);
|
|
bool condition(nasal_val*);
|
|
void opr_nop();
|
|
void opr_intg();
|
|
void opr_intl();
|
|
void opr_offset();
|
|
void opr_loadg();
|
|
void opr_loadl();
|
|
void opr_pnum();
|
|
void opr_pone();
|
|
void opr_pzero();
|
|
void opr_pnil();
|
|
void opr_pstr();
|
|
void opr_newv();
|
|
void opr_newh();
|
|
void opr_newf();
|
|
void opr_happ();
|
|
void opr_para();
|
|
void opr_defpara();
|
|
void opr_dynpara();
|
|
void opr_unot();
|
|
void opr_usub();
|
|
void opr_add();
|
|
void opr_sub();
|
|
void opr_mul();
|
|
void opr_div();
|
|
void opr_lnk();
|
|
void opr_addeq();
|
|
void opr_subeq();
|
|
void opr_muleq();
|
|
void opr_diveq();
|
|
void opr_lnkeq();
|
|
void opr_meq();
|
|
void opr_eq();
|
|
void opr_neq();
|
|
void opr_less();
|
|
void opr_leq();
|
|
void opr_grt();
|
|
void opr_geq();
|
|
void opr_pop();
|
|
void opr_jmp();
|
|
void opr_jt();
|
|
void opr_jf();
|
|
void opr_counter();
|
|
void opr_cntpop();
|
|
void opr_findex();
|
|
void opr_feach();
|
|
void opr_callg();
|
|
void opr_calll();
|
|
void opr_callv();
|
|
void opr_callvi();
|
|
void opr_callh();
|
|
void opr_callfv();
|
|
void opr_callfh();
|
|
void opr_callb();
|
|
void opr_slcbegin();
|
|
void opr_slcend();
|
|
void opr_slc();
|
|
void opr_slc2();
|
|
void opr_mcallg();
|
|
void opr_mcalll();
|
|
void opr_mcallv();
|
|
void opr_mcallh();
|
|
void opr_ret();
|
|
public:
|
|
nasal_vm():stack_top(gc.stack_top){};
|
|
void init(
|
|
std::vector<std::string>&,
|
|
std::vector<double>&,
|
|
std::vector<opcode>&);
|
|
void clear();
|
|
void run();
|
|
};
|
|
|
|
void nasal_vm::init(
|
|
std::vector<std::string>& strs,
|
|
std::vector<double>& nums,
|
|
std::vector<opcode>& exec)
|
|
{
|
|
gc.gc_init(nums,strs);
|
|
gc.val_stack[STACK_MAX_DEPTH-1]=nullptr;
|
|
str_table=strs; // get constant strings & symbols
|
|
void (nasal_vm::*opr_table[])()=
|
|
{
|
|
&nasal_vm::opr_nop,
|
|
&nasal_vm::opr_intg,
|
|
&nasal_vm::opr_intl,
|
|
&nasal_vm::opr_offset,
|
|
&nasal_vm::opr_loadg,
|
|
&nasal_vm::opr_loadl,
|
|
&nasal_vm::opr_pnum,
|
|
&nasal_vm::opr_pone,
|
|
&nasal_vm::opr_pzero,
|
|
&nasal_vm::opr_pnil,
|
|
&nasal_vm::opr_pstr,
|
|
&nasal_vm::opr_newv,
|
|
&nasal_vm::opr_newh,
|
|
&nasal_vm::opr_newf,
|
|
&nasal_vm::opr_happ,
|
|
&nasal_vm::opr_para,
|
|
&nasal_vm::opr_defpara,
|
|
&nasal_vm::opr_dynpara,
|
|
&nasal_vm::opr_unot,
|
|
&nasal_vm::opr_usub,
|
|
&nasal_vm::opr_add,
|
|
&nasal_vm::opr_sub,
|
|
&nasal_vm::opr_mul,
|
|
&nasal_vm::opr_div,
|
|
&nasal_vm::opr_lnk,
|
|
&nasal_vm::opr_addeq,
|
|
&nasal_vm::opr_subeq,
|
|
&nasal_vm::opr_muleq,
|
|
&nasal_vm::opr_diveq,
|
|
&nasal_vm::opr_lnkeq,
|
|
&nasal_vm::opr_meq,
|
|
&nasal_vm::opr_eq,
|
|
&nasal_vm::opr_neq,
|
|
&nasal_vm::opr_less,
|
|
&nasal_vm::opr_leq,
|
|
&nasal_vm::opr_grt,
|
|
&nasal_vm::opr_geq,
|
|
&nasal_vm::opr_pop,
|
|
&nasal_vm::opr_jmp,
|
|
&nasal_vm::opr_jt,
|
|
&nasal_vm::opr_jf,
|
|
&nasal_vm::opr_counter,
|
|
&nasal_vm::opr_cntpop,
|
|
&nasal_vm::opr_findex,
|
|
&nasal_vm::opr_feach,
|
|
&nasal_vm::opr_callg,
|
|
&nasal_vm::opr_calll,
|
|
&nasal_vm::opr_callv,
|
|
&nasal_vm::opr_callvi,
|
|
&nasal_vm::opr_callh,
|
|
&nasal_vm::opr_callfv,
|
|
&nasal_vm::opr_callfh,
|
|
&nasal_vm::opr_callb,
|
|
&nasal_vm::opr_slcbegin,
|
|
&nasal_vm::opr_slcend,
|
|
&nasal_vm::opr_slc,
|
|
&nasal_vm::opr_slc2,
|
|
&nasal_vm::opr_mcallg,
|
|
&nasal_vm::opr_mcalll,
|
|
&nasal_vm::opr_mcallv,
|
|
&nasal_vm::opr_mcallh,
|
|
&nasal_vm::opr_ret
|
|
};
|
|
for(auto& i:exec)
|
|
{
|
|
exec_code.push_back(opr_table[i.op]);
|
|
imm.push_back(i.num);
|
|
}
|
|
loop_mark=true; // set loop mark to true
|
|
return;
|
|
}
|
|
void nasal_vm::clear()
|
|
{
|
|
gc.gc_clear();
|
|
while(!ret.empty())
|
|
ret.pop();
|
|
while(!counter.empty())
|
|
counter.pop();
|
|
str_table.clear();
|
|
exec_code.clear();
|
|
return;
|
|
}
|
|
void nasal_vm::die(std::string str)
|
|
{
|
|
printf(">> [vm] 0x%.8x: %s\n",pc,str.c_str());
|
|
loop_mark=false;
|
|
return;
|
|
}
|
|
bool nasal_vm::condition(nasal_val* val_addr)
|
|
{
|
|
if(val_addr->type==vm_num)
|
|
return val_addr->ptr.num;
|
|
else if(val_addr->type==vm_str)
|
|
{
|
|
std::string& str=*val_addr->ptr.str;
|
|
double num=str2num(str.c_str());
|
|
if(std::isnan(num))
|
|
return str.empty();
|
|
return num;
|
|
}
|
|
return false;
|
|
}
|
|
void nasal_vm::opr_nop()
|
|
{
|
|
loop_mark=false;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_intg()
|
|
{
|
|
gc.global.resize(imm[pc],gc.nil_addr);
|
|
return;
|
|
}
|
|
void nasal_vm::opr_intl()
|
|
{
|
|
stack_top[0]->ptr.func->closure.resize(imm[pc],gc.nil_addr);
|
|
return;
|
|
}
|
|
void nasal_vm::opr_offset()
|
|
{
|
|
stack_top[0]->ptr.func->offset=imm[pc];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_loadg()
|
|
{
|
|
gc.global[imm[pc]]=(stack_top--)[0];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_loadl()
|
|
{
|
|
gc.local.back()[imm[pc]]=(stack_top--)[0];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_pnum()
|
|
{
|
|
(++stack_top)[0]=gc.num_addrs[imm[pc]];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_pone()
|
|
{
|
|
(++stack_top)[0]=gc.one_addr;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_pzero()
|
|
{
|
|
(++stack_top)[0]=gc.zero_addr;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_pnil()
|
|
{
|
|
(++stack_top)[0]=gc.nil_addr;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_pstr()
|
|
{
|
|
(++stack_top)[0]=gc.str_addrs[imm[pc]];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_newv()
|
|
{
|
|
nasal_val* vec_addr=gc.gc_alloc(vm_vec);
|
|
nasal_val** begin=stack_top-imm[pc]+1;
|
|
auto& vec=vec_addr->ptr.vec->elems;// stack_top-imm[pc] stores the vector
|
|
vec.resize(imm[pc]);
|
|
for(int i=0;i<imm[pc];++i)
|
|
vec[i]=begin[i];
|
|
begin[0]=vec_addr;
|
|
stack_top=begin;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_newh()
|
|
{
|
|
(++stack_top)[0]=gc.gc_alloc(vm_hash);
|
|
return;
|
|
}
|
|
void nasal_vm::opr_newf()
|
|
{
|
|
nasal_val* val=gc.gc_alloc(vm_func);
|
|
val->ptr.func->entry=imm[pc];
|
|
if(gc.local.empty())
|
|
val->ptr.func->closure.push_back(gc.nil_addr);// me
|
|
else
|
|
val->ptr.func->closure=gc.local.back();// local contains 'me'
|
|
(++stack_top)[0]=val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_happ()
|
|
{
|
|
nasal_val* val=stack_top[0];
|
|
(--stack_top)[0]->ptr.hash->elems[str_table[imm[pc]]]=val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_para()
|
|
{
|
|
nasal_func* func=stack_top[0]->ptr.func;
|
|
int size=func->key_table.size();
|
|
func->key_table[str_table[imm[pc]]]=size;
|
|
func->default_para.push_back(nullptr);
|
|
return;
|
|
}
|
|
void nasal_vm::opr_defpara()
|
|
{
|
|
nasal_val* def_val=stack_top[0];
|
|
nasal_func* func=(--stack_top)[0]->ptr.func;
|
|
int size=func->key_table.size();
|
|
func->key_table[str_table[imm[pc]]]=size;
|
|
func->default_para.push_back(def_val);
|
|
return;
|
|
}
|
|
void nasal_vm::opr_dynpara()
|
|
{
|
|
stack_top[0]->ptr.func->dynpara=imm[pc];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_unot()
|
|
{
|
|
nasal_val* val=stack_top[0];
|
|
int type=val->type;
|
|
if(type==vm_nil)
|
|
stack_top[0]=gc.one_addr;
|
|
else if(type==vm_num)
|
|
stack_top[0]=val->ptr.num?gc.zero_addr:gc.one_addr;
|
|
else if(type==vm_str)
|
|
{
|
|
double num=str2num(val->ptr.str->c_str());
|
|
if(std::isnan(num))
|
|
stack_top[0]=val->ptr.str->empty()?gc.one_addr:gc.zero_addr;
|
|
else
|
|
stack_top[0]=num?gc.zero_addr:gc.one_addr;
|
|
}
|
|
else
|
|
die("unot: incorrect value type");
|
|
return;
|
|
}
|
|
void nasal_vm::opr_usub()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_num);
|
|
new_val->ptr.num=-stack_top[0]->to_number();
|
|
stack_top[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_add()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_num);
|
|
new_val->ptr.num=stack_top[-1]->to_number()+stack_top[0]->to_number();
|
|
(--stack_top)[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_sub()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_num);
|
|
new_val->ptr.num=stack_top[-1]->to_number()-stack_top[0]->to_number();
|
|
(--stack_top)[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_mul()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_num);
|
|
new_val->ptr.num=stack_top[-1]->to_number()*stack_top[0]->to_number();
|
|
(--stack_top)[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_div()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_num);
|
|
new_val->ptr.num=stack_top[-1]->to_number()/stack_top[0]->to_number();
|
|
(--stack_top)[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_lnk()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_str);
|
|
*new_val->ptr.str=stack_top[-1]->to_string()+stack_top[0]->to_string();
|
|
(--stack_top)[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_addeq()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_num);
|
|
new_val->ptr.num=mem_addr[0]->to_number()+stack_top[-1]->to_number();
|
|
(--stack_top)[0]=mem_addr[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_subeq()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_num);
|
|
new_val->ptr.num=mem_addr[0]->to_number()-stack_top[-1]->to_number();
|
|
(--stack_top)[0]=mem_addr[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_muleq()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_num);
|
|
new_val->ptr.num=mem_addr[0]->to_number()*stack_top[-1]->to_number();
|
|
(--stack_top)[0]=mem_addr[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_diveq()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_num);
|
|
new_val->ptr.num=mem_addr[0]->to_number()/stack_top[-1]->to_number();
|
|
(--stack_top)[0]=mem_addr[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_lnkeq()
|
|
{
|
|
nasal_val* new_val=gc.gc_alloc(vm_str);
|
|
*new_val->ptr.str=mem_addr[0]->to_string()+stack_top[-1]->to_string();
|
|
(--stack_top)[0]=mem_addr[0]=new_val;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_meq()
|
|
{
|
|
mem_addr[0]=(--stack_top)[0];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_eq()
|
|
{
|
|
nasal_val* val2=stack_top[0];
|
|
nasal_val* val1=(--stack_top)[0];
|
|
int a_type=val1->type;
|
|
int b_type=val2->type;
|
|
if(a_type==vm_nil && b_type==vm_nil)
|
|
stack_top[0]=gc.one_addr;
|
|
else if(a_type==vm_str && b_type==vm_str)
|
|
stack_top[0]=(*val1->ptr.str==*val2->ptr.str)?gc.one_addr:gc.zero_addr;
|
|
else if(a_type==vm_num || b_type==vm_num)
|
|
stack_top[0]=(val1->to_number()==val2->to_number())?gc.one_addr:gc.zero_addr;
|
|
else
|
|
stack_top[0]=(val1==val2)?gc.one_addr:gc.zero_addr;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_neq()
|
|
{
|
|
nasal_val* val2=stack_top[0];
|
|
nasal_val* val1=(--stack_top)[0];
|
|
int a_type=val1->type;
|
|
int b_type=val2->type;
|
|
if(a_type==vm_nil && b_type==vm_nil)
|
|
stack_top[0]=gc.zero_addr;
|
|
else if(a_type==vm_str && b_type==vm_str)
|
|
stack_top[0]=(*val1->ptr.str!=*val2->ptr.str)?gc.one_addr:gc.zero_addr;
|
|
else if(a_type==vm_num || b_type==vm_num)
|
|
stack_top[0]=(val1->to_number()!=val2->to_number())?gc.one_addr:gc.zero_addr;
|
|
else
|
|
stack_top[0]=(val1!=val2)?gc.one_addr:gc.zero_addr;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_less()
|
|
{
|
|
--stack_top;
|
|
stack_top[0]=(stack_top[0]->to_number()<stack_top[1]->to_number())?gc.one_addr:gc.zero_addr;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_leq()
|
|
{
|
|
--stack_top;
|
|
stack_top[0]=(stack_top[0]->to_number()<=stack_top[1]->to_number())?gc.one_addr:gc.zero_addr;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_grt()
|
|
{
|
|
--stack_top;
|
|
stack_top[0]=(stack_top[0]->to_number()>stack_top[1]->to_number())?gc.one_addr:gc.zero_addr;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_geq()
|
|
{
|
|
--stack_top;
|
|
stack_top[0]=(stack_top[0]->to_number()>=stack_top[1]->to_number())?gc.one_addr:gc.zero_addr;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_pop()
|
|
{
|
|
--stack_top;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_jmp()
|
|
{
|
|
pc=imm[pc]-1;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_jt()
|
|
{
|
|
if(condition(stack_top[0]))
|
|
pc=imm[pc]-1;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_jf()
|
|
{
|
|
if(!condition(stack_top[0]))
|
|
pc=imm[pc]-1;
|
|
--stack_top;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_counter()
|
|
{
|
|
counter.push(-1);
|
|
if(stack_top[0]->type!=vm_vec)
|
|
die("cnt: must use vector in forindex/foreach");
|
|
return;
|
|
}
|
|
void nasal_vm::opr_cntpop()
|
|
{
|
|
counter.pop();
|
|
return;
|
|
}
|
|
void nasal_vm::opr_findex()
|
|
{
|
|
if(++counter.top()>=stack_top[0]->ptr.vec->elems.size())
|
|
{
|
|
pc=imm[pc]-1;
|
|
return;
|
|
}
|
|
(++stack_top)[0]=gc.gc_alloc(vm_num);
|
|
stack_top[0]->ptr.num=counter.top();
|
|
return;
|
|
}
|
|
void nasal_vm::opr_feach()
|
|
{
|
|
std::vector<nasal_val*>& ref=stack_top[0]->ptr.vec->elems;
|
|
if(++counter.top()>=ref.size())
|
|
{
|
|
pc=imm[pc]-1;
|
|
return;
|
|
}
|
|
(++stack_top)[0]=ref[counter.top()];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_callg()
|
|
{
|
|
(++stack_top)[0]=gc.global[imm[pc]];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_calll()
|
|
{
|
|
(++stack_top)[0]=gc.local.back()[imm[pc]];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_callv()
|
|
{
|
|
nasal_val* val=stack_top[0];
|
|
nasal_val* vec_addr=(--stack_top)[0];
|
|
int type=vec_addr->type;
|
|
if(type==vm_vec)
|
|
{
|
|
stack_top[0]=vec_addr->ptr.vec->get_val(val->to_number());
|
|
if(!stack_top[0])
|
|
die("callv: index out of range:"+num2str(val->to_number()));
|
|
}
|
|
else if(type==vm_hash)
|
|
{
|
|
if(val->type!=vm_str)
|
|
{
|
|
die("callv: must use string as the key");
|
|
return;
|
|
}
|
|
stack_top[0]=vec_addr->ptr.hash->get_val(*val->ptr.str);
|
|
if(!stack_top[0])
|
|
{
|
|
die("callv: cannot find member \""+*val->ptr.str+"\" of this hash");
|
|
return;
|
|
}
|
|
if(stack_top[0]->type==vm_func)
|
|
stack_top[0]->ptr.func->closure[0]=val;// me
|
|
}
|
|
else if(type==vm_str)
|
|
{
|
|
std::string& str=*vec_addr->ptr.str;
|
|
int num=val->to_number();
|
|
int str_size=str.length();
|
|
if(num<-str_size || num>=str_size)
|
|
{
|
|
die("callv: index out of range:"+num2str(val->to_number()));
|
|
return;
|
|
}
|
|
stack_top[0]=gc.gc_alloc(vm_num);
|
|
stack_top[0]->ptr.num=(str[num>=0? num:num+str_size]);
|
|
}
|
|
else
|
|
die("callv: must call a vector/hash/string");
|
|
return;
|
|
}
|
|
void nasal_vm::opr_callvi()
|
|
{
|
|
nasal_val* val=stack_top[0];
|
|
if(val->type!=vm_vec)
|
|
{
|
|
die("callvi: multi-definition/multi-assignment must use a vector");
|
|
return;
|
|
}
|
|
// cannot use operator[],because this may cause overflow
|
|
(++stack_top)[0]=val->ptr.vec->get_val(imm[pc]);
|
|
if(!stack_top[0])
|
|
die("callvi: index out of range:"+num2str(imm[pc]));
|
|
return;
|
|
}
|
|
void nasal_vm::opr_callh()
|
|
{
|
|
nasal_val* val=stack_top[0];
|
|
if(val->type!=vm_hash)
|
|
{
|
|
die("callh: must call a hash");
|
|
return;
|
|
}
|
|
stack_top[0]=val->ptr.hash->get_val(str_table[imm[pc]]);
|
|
if(!stack_top[0])
|
|
{
|
|
die("callh: member \""+str_table[imm[pc]]+"\" does not exist");
|
|
return;
|
|
}
|
|
if(stack_top[0]->type==vm_func)
|
|
stack_top[0]->ptr.func->closure[0]=val;// me
|
|
return;
|
|
}
|
|
void nasal_vm::opr_callfv()
|
|
{
|
|
// get parameter list and function value
|
|
int args_size=imm[pc];
|
|
nasal_val** vec=stack_top-args_size+1;
|
|
nasal_val* func_addr=vec[-1];
|
|
if(func_addr->type!=vm_func)
|
|
{
|
|
die("callfv: must call a function");
|
|
return;
|
|
}
|
|
// push new local scope
|
|
auto& ref_func=*func_addr->ptr.func;
|
|
gc.local.push_back(ref_func.closure);
|
|
// load parameters
|
|
auto& ref_default=ref_func.default_para;
|
|
auto& ref_closure=gc.local.back();
|
|
|
|
int offset=ref_func.offset;
|
|
int para_size=ref_func.key_table.size();
|
|
// load arguments
|
|
if(args_size<para_size && !ref_default[args_size])
|
|
{
|
|
// if the first default value is not nullptr,then values after it are not nullptr
|
|
die("callfv: lack argument(s)");
|
|
return;
|
|
}
|
|
// if args_size>para_size,for 0 to args_size will cause corruption
|
|
for(int i=0;i<para_size;++i)
|
|
ref_closure[i+offset]=(i<args_size)?vec[i]:ref_default[i];
|
|
// load dynamic argument if args_size>=para_size
|
|
if(ref_func.dynpara>=0)
|
|
{
|
|
nasal_val* vec_addr=gc.gc_alloc(vm_vec);
|
|
for(int i=para_size;i<args_size;++i)
|
|
vec_addr->ptr.vec->elems.push_back(vec[i]);
|
|
ref_closure[para_size+offset]=vec_addr;
|
|
}
|
|
|
|
stack_top-=args_size;// pop arguments
|
|
ret.push(pc);
|
|
pc=ref_func.entry-1;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_callfh()
|
|
{
|
|
// get parameter list and function value
|
|
auto& ref_hash=stack_top[0]->ptr.hash->elems;
|
|
nasal_val* func_addr=stack_top[-1];
|
|
if(func_addr->type!=vm_func)
|
|
{
|
|
die("callfh: must call a function");
|
|
return;
|
|
}
|
|
// push new local scope
|
|
auto& ref_func=*func_addr->ptr.func;
|
|
gc.local.push_back(ref_func.closure);
|
|
// load parameters
|
|
auto& ref_default=ref_func.default_para;
|
|
auto& ref_closure=gc.local.back();
|
|
|
|
if(ref_func.dynpara>=0)
|
|
{
|
|
die("callfh: special call cannot use dynamic argument");
|
|
return;
|
|
}
|
|
int offset=ref_func.offset;
|
|
for(auto& i:ref_func.key_table)
|
|
{
|
|
if(ref_hash.count(i.first))
|
|
ref_closure[i.second+offset]=ref_hash[i.first];
|
|
else if(ref_default[i.second])
|
|
ref_closure[i.second+offset]=ref_default[i.second];
|
|
else
|
|
{
|
|
die("callfh: lack argument(s): \""+i.first+"\"");
|
|
return;
|
|
}
|
|
}
|
|
|
|
--stack_top;// pop hash
|
|
ret.push(pc);
|
|
pc=ref_func.entry-1;
|
|
return;
|
|
}
|
|
void nasal_vm::opr_callb()
|
|
{
|
|
loop_mark=(++stack_top)[0]=(*builtin_func[imm[pc]].func)(gc.local.back(),gc);
|
|
return;
|
|
}
|
|
void nasal_vm::opr_slcbegin()
|
|
{
|
|
gc.slice_stack.push_back(gc.gc_alloc(vm_vec));
|
|
if(stack_top[0]->type!=vm_vec)
|
|
die("slcbegin: must slice a vector");
|
|
return;
|
|
}
|
|
void nasal_vm::opr_slcend()
|
|
{
|
|
stack_top[0]=gc.slice_stack.back();
|
|
gc.slice_stack.pop_back();
|
|
return;
|
|
}
|
|
void nasal_vm::opr_slc()
|
|
{
|
|
nasal_val* val=(stack_top--)[0];
|
|
nasal_val* res=stack_top[0]->ptr.vec->get_val(val->to_number());
|
|
if(!res)
|
|
die("slc: index out of range:"+num2str(val->to_number()));
|
|
gc.slice_stack.back()->ptr.vec->elems.push_back(res);
|
|
return;
|
|
}
|
|
void nasal_vm::opr_slc2()
|
|
{
|
|
nasal_val* val2=(stack_top--)[0];
|
|
nasal_val* val1=(stack_top--)[0];
|
|
std::vector<nasal_val*>& ref=stack_top[0]->ptr.vec->elems;
|
|
std::vector<nasal_val*>& aim=gc.slice_stack.back()->ptr.vec->elems;
|
|
|
|
int type1=val1->type,type2=val2->type;
|
|
int num1=val1->to_number();
|
|
int num2=val2->to_number();
|
|
int ref_size=ref.size();
|
|
if(type1==vm_nil && type2==vm_nil)
|
|
{
|
|
num1=0;
|
|
num2=ref_size-1;
|
|
}
|
|
else if(type1==vm_nil && type2!=vm_nil)
|
|
num1=num2<0? -ref_size:0;
|
|
else if(type1!=vm_nil && type2==vm_nil)
|
|
num2=num1<0? -1:ref_size-1;
|
|
|
|
if(num1>=num2)
|
|
{
|
|
die("slc2: begin index must be less than end index");
|
|
return;
|
|
}
|
|
else if(num1<-ref_size || num1>=ref_size)
|
|
{
|
|
die("slc2: begin index out of range: "+num2str(num1));
|
|
return;
|
|
}
|
|
else if(num2<-ref_size || num2>=ref_size)
|
|
{
|
|
die("slc2: end index out of range: "+num2str(num2));
|
|
return;
|
|
}
|
|
for(int i=num1;i<=num2;++i)
|
|
aim.push_back(i>=0?ref[i]:ref[i+ref_size]);
|
|
return;
|
|
}
|
|
void nasal_vm::opr_mcallg()
|
|
{
|
|
mem_addr=&gc.global[imm[pc]];
|
|
(++stack_top)[0]=mem_addr[0];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_mcalll()
|
|
{
|
|
mem_addr=&gc.local.back()[imm[pc]];
|
|
(++stack_top)[0]=mem_addr[0];
|
|
return;
|
|
}
|
|
void nasal_vm::opr_mcallv()
|
|
{
|
|
nasal_val* val=stack_top[0];
|
|
nasal_val* vec_addr=(--stack_top)[0];
|
|
int type=vec_addr->type;
|
|
if(type==vm_vec)
|
|
{
|
|
mem_addr=vec_addr->ptr.vec->get_mem(val->to_number());
|
|
if(!mem_addr)
|
|
die("mcallv: index out of range:"+num2str(val->to_number()));
|
|
}
|
|
else if(type==vm_hash)
|
|
{
|
|
if(val->type!=vm_str)
|
|
{
|
|
die("mcallv: must use string as the key");
|
|
return;
|
|
}
|
|
nasal_hash& ref=*vec_addr->ptr.hash;
|
|
std::string& str=*val->ptr.str;
|
|
mem_addr=ref.get_mem(str);
|
|
if(!mem_addr)
|
|
{
|
|
ref.elems[str]=gc.nil_addr;
|
|
mem_addr=ref.get_mem(str);
|
|
}
|
|
}
|
|
else
|
|
die("mcallv: cannot get memory space in other types");
|
|
return;
|
|
}
|
|
void nasal_vm::opr_mcallh()
|
|
{
|
|
nasal_val* hash_addr=stack_top[0];
|
|
if(hash_addr->type!=vm_hash)
|
|
{
|
|
die("mcallh: must call a hash");
|
|
return;
|
|
}
|
|
nasal_hash& ref=*hash_addr->ptr.hash;
|
|
std::string& str=str_table[imm[pc]];
|
|
mem_addr=ref.get_mem(str);
|
|
if(!mem_addr) // create a new key
|
|
{
|
|
ref.elems[str]=gc.nil_addr;
|
|
mem_addr=ref.get_mem(str);
|
|
}
|
|
return;
|
|
}
|
|
void nasal_vm::opr_ret()
|
|
{
|
|
gc.local.pop_back();// delete local scope
|
|
pc=ret.top();ret.pop();// fetch pc
|
|
(--stack_top)[0]->ptr.func->closure[0]=gc.nil_addr;// set 'me' to nil
|
|
stack_top[0]=stack_top[1];// rewrite nasal_func with returned value
|
|
return;
|
|
}
|
|
void nasal_vm::run()
|
|
{
|
|
clock_t begin_time=clock();
|
|
for(pc=0;loop_mark&&!gc.val_stack[STACK_MAX_DEPTH-1];++pc)
|
|
(this->*exec_code[pc])();
|
|
if(gc.val_stack[STACK_MAX_DEPTH-1])
|
|
die("stack overflow");
|
|
std::cout<<">> [vm] process exited after "<<((double)(clock()-begin_time))/CLOCKS_PER_SEC<<"s.\n";
|
|
return;
|
|
}
|
|
#endif |