557 lines
15 KiB
C++
557 lines
15 KiB
C++
/*
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see copyright notice in squirrel.h
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*/
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#include "sqpcheader.h"
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#include "sqcompiler.h"
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#include "sqfuncproto.h"
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#include "sqstring.h"
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#include "sqtable.h"
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#include "sqopcodes.h"
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#include "sqfuncstate.h"
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#ifdef _DEBUG_DUMP
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SQInstructionDesc g_InstrDesc[]={
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{_SC("_OP_LINE")},
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{_SC("_OP_LOAD")},
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{_SC("_OP_LOADINT")},
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{_SC("_OP_LOADFLOAT")},
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{_SC("_OP_DLOAD")},
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{_SC("_OP_TAILCALL")},
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{_SC("_OP_CALL")},
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{_SC("_OP_PREPCALL")},
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{_SC("_OP_PREPCALLK")},
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{_SC("_OP_GETK")},
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{_SC("_OP_MOVE")},
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{_SC("_OP_NEWSLOT")},
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{_SC("_OP_DELETE")},
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{_SC("_OP_SET")},
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{_SC("_OP_GET")},
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{_SC("_OP_EQ")},
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{_SC("_OP_NE")},
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{_SC("_OP_ARITH")},
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{_SC("_OP_BITW")},
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{_SC("_OP_RETURN")},
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{_SC("_OP_LOADNULLS")},
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{_SC("_OP_LOADROOTTABLE")},
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{_SC("_OP_LOADBOOL")},
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{_SC("_OP_DMOVE")},
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{_SC("_OP_JMP")},
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{_SC("_OP_JNZ")},
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{_SC("_OP_JZ")},
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{_SC("_OP_LOADFREEVAR")},
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{_SC("_OP_VARGC")},
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{_SC("_OP_GETVARGV")},
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{_SC("_OP_NEWTABLE")},
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{_SC("_OP_NEWARRAY")},
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{_SC("_OP_APPENDARRAY")},
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{_SC("_OP_GETPARENT")},
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{_SC("_OP_COMPARITH")},
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{_SC("_OP_COMPARITHL")},
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{_SC("_OP_INC")},
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{_SC("_OP_INCL")},
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{_SC("_OP_PINC")},
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{_SC("_OP_PINCL")},
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{_SC("_OP_CMP")},
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{_SC("_OP_EXISTS")},
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{_SC("_OP_INSTANCEOF")},
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{_SC("_OP_AND")},
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{_SC("_OP_OR")},
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{_SC("_OP_NEG")},
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{_SC("_OP_NOT")},
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{_SC("_OP_BWNOT")},
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{_SC("_OP_CLOSURE")},
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{_SC("_OP_YIELD")},
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{_SC("_OP_RESUME")},
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{_SC("_OP_FOREACH")},
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{_SC("_OP_DELEGATE")},
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{_SC("_OP_CLONE")},
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{_SC("_OP_TYPEOF")},
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{_SC("_OP_PUSHTRAP")},
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{_SC("_OP_POPTRAP")},
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{_SC("_OP_THROW")},
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{_SC("_OP_CLASS")},
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{_SC("_OP_NEWSLOTA")}
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};
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#endif
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void DumpLiteral(SQObjectPtr &o)
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{
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switch(type(o)){
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case OT_STRING: scprintf(_SC("\"%s\""),_stringval(o));break;
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case OT_FLOAT: scprintf(_SC("{%f}"),_float(o));break;
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case OT_INTEGER: scprintf(_SC("{%d}"),_integer(o));break;
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default: assert(0); break; //shut up compiler
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}
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}
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SQFuncState::SQFuncState(SQSharedState *ss,SQFuncState *parent,CompilerErrorFunc efunc,void *ed)
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{
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_nliterals = 0;
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_literals = SQTable::Create(ss,0);
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_strings = SQTable::Create(ss,0);
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_sharedstate = ss;
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_lastline = 0;
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_optimization = true;
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_parent = parent;
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_stacksize = 0;
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_traps = 0;
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_returnexp = 0;
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_varparams = false;
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_errfunc = efunc;
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_errtarget = ed;
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_bgenerator = false;
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}
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void SQFuncState::Error(const SQChar *err)
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{
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_errfunc(_errtarget,err);
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}
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#ifdef _DEBUG_DUMP
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void SQFuncState::Dump(SQFunctionProto *func)
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{
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SQUnsignedInteger n=0,i;
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SQInteger si;
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scprintf(_SC("SQInstruction sizeof %d\n"),sizeof(SQInstruction));
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scprintf(_SC("SQObject sizeof %d\n"),sizeof(SQObject));
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scprintf(_SC("--------------------------------------------------------------------\n"));
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scprintf(_SC("*****FUNCTION [%s]\n"),type(func->_name)==OT_STRING?_stringval(func->_name):_SC("unknown"));
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scprintf(_SC("-----LITERALS\n"));
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SQObjectPtr refidx,key,val;
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SQInteger idx;
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SQObjectPtrVec templiterals;
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templiterals.resize(_nliterals);
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while((idx=_table(_literals)->Next(false,refidx,key,val))!=-1) {
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refidx=idx;
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templiterals[_integer(val)]=key;
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}
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for(i=0;i<templiterals.size();i++){
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scprintf(_SC("[%d] "),n);
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DumpLiteral(templiterals[i]);
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scprintf(_SC("\n"));
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n++;
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}
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scprintf(_SC("-----PARAMS\n"));
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if(_varparams)
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scprintf(_SC("<<VARPARAMS>>\n"));
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n=0;
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for(i=0;i<_parameters.size();i++){
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scprintf(_SC("[%d] "),n);
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DumpLiteral(_parameters[i]);
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scprintf(_SC("\n"));
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n++;
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}
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scprintf(_SC("-----LOCALS\n"));
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for(si=0;si<func->_nlocalvarinfos;si++){
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SQLocalVarInfo lvi=func->_localvarinfos[si];
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scprintf(_SC("[%d] %s \t%d %d\n"),lvi._pos,_stringval(lvi._name),lvi._start_op,lvi._end_op);
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n++;
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}
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scprintf(_SC("-----LINE INFO\n"));
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for(i=0;i<_lineinfos.size();i++){
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SQLineInfo li=_lineinfos[i];
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scprintf(_SC("op [%d] line [%d] \n"),li._op,li._line);
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n++;
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}
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scprintf(_SC("-----dump\n"));
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n=0;
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for(i=0;i<_instructions.size();i++){
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SQInstruction &inst=_instructions[i];
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if(inst.op==_OP_LOAD || inst.op==_OP_DLOAD || inst.op==_OP_PREPCALLK || inst.op==_OP_GETK ){
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SQInteger lidx = inst._arg1;
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scprintf(_SC("[%03d] %15s %d "),n,g_InstrDesc[inst.op].name,inst._arg0);
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if(lidx >= 0xFFFFFFFF)
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scprintf(_SC("null"));
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else {
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SQInteger refidx;
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SQObjectPtr val,key,refo;
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while(((refidx=_table(_literals)->Next(false,refo,key,val))!= -1) && (_integer(val) != lidx)) {
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refo = refidx;
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}
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DumpLiteral(key);
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}
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if(inst.op != _OP_DLOAD) {
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scprintf(_SC(" %d %d \n"),inst._arg2,inst._arg3);
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}
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else {
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scprintf(_SC(" %d "),inst._arg2);
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lidx = inst._arg3;
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if(lidx >= 0xFFFFFFFF)
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scprintf(_SC("null"));
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else {
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SQInteger refidx;
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SQObjectPtr val,key,refo;
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while(((refidx=_table(_literals)->Next(false,refo,key,val))!= -1) && (_integer(val) != lidx)) {
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refo = refidx;
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}
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DumpLiteral(key);
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scprintf(_SC("\n"));
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}
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}
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}
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else if(inst.op==_OP_LOADFLOAT) {
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scprintf(_SC("[%03d] %15s %d %f %d %d\n"),n,g_InstrDesc[inst.op].name,inst._arg0,*((SQFloat*)&inst._arg1),inst._arg2,inst._arg3);
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}
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else if(inst.op==_OP_ARITH){
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scprintf(_SC("[%03d] %15s %d %d %d %c\n"),n,g_InstrDesc[inst.op].name,inst._arg0,inst._arg1,inst._arg2,inst._arg3);
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}
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else
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scprintf(_SC("[%03d] %15s %d %d %d %d\n"),n,g_InstrDesc[inst.op].name,inst._arg0,inst._arg1,inst._arg2,inst._arg3);
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n++;
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}
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scprintf(_SC("-----\n"));
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scprintf(_SC("stack size[%d]\n"),func->_stacksize);
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scprintf(_SC("--------------------------------------------------------------------\n\n"));
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}
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#endif
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SQInteger SQFuncState::GetNumericConstant(const SQInteger cons)
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{
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return GetConstant(SQObjectPtr(cons));
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}
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SQInteger SQFuncState::GetNumericConstant(const SQFloat cons)
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{
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return GetConstant(SQObjectPtr(cons));
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}
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SQInteger SQFuncState::GetConstant(const SQObject &cons)
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{
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SQObjectPtr val;
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if(!_table(_literals)->Get(cons,val))
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{
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val = _nliterals;
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_table(_literals)->NewSlot(cons,val);
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_nliterals++;
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if(_nliterals > MAX_LITERALS) {
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val.Null();
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Error(_SC("internal compiler error: too many literals"));
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}
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}
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return _integer(val);
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}
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void SQFuncState::SetIntructionParams(SQInteger pos,SQInteger arg0,SQInteger arg1,SQInteger arg2,SQInteger arg3)
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{
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_instructions[pos]._arg0=(unsigned char)*((SQUnsignedInteger *)&arg0);
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_instructions[pos]._arg1=(SQInt32)*((SQUnsignedInteger *)&arg1);
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_instructions[pos]._arg2=(unsigned char)*((SQUnsignedInteger *)&arg2);
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_instructions[pos]._arg3=(unsigned char)*((SQUnsignedInteger *)&arg3);
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}
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void SQFuncState::SetIntructionParam(SQInteger pos,SQInteger arg,SQInteger val)
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{
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switch(arg){
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case 0:_instructions[pos]._arg0=(unsigned char)*((SQUnsignedInteger *)&val);break;
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case 1:case 4:_instructions[pos]._arg1=(SQInt32)*((SQUnsignedInteger *)&val);break;
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case 2:_instructions[pos]._arg2=(unsigned char)*((SQUnsignedInteger *)&val);break;
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case 3:_instructions[pos]._arg3=(unsigned char)*((SQUnsignedInteger *)&val);break;
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};
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}
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SQInteger SQFuncState::AllocStackPos()
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{
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SQInteger npos=_vlocals.size();
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_vlocals.push_back(SQLocalVarInfo());
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if(_vlocals.size()>((SQUnsignedInteger)_stacksize)) {
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if(_stacksize>MAX_FUNC_STACKSIZE) Error(_SC("internal compiler error: too many locals"));
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_stacksize=_vlocals.size();
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}
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return npos;
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}
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SQInteger SQFuncState::PushTarget(SQInteger n)
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{
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if(n!=-1){
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_targetstack.push_back(n);
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return n;
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}
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n=AllocStackPos();
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_targetstack.push_back(n);
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return n;
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}
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SQInteger SQFuncState::GetUpTarget(SQInteger n){
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return _targetstack[((_targetstack.size()-1)-n)];
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}
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SQInteger SQFuncState::TopTarget(){
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return _targetstack.back();
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}
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SQInteger SQFuncState::PopTarget()
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{
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SQInteger npos=_targetstack.back();
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SQLocalVarInfo t=_vlocals[_targetstack.back()];
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if(type(t._name)==OT_NULL){
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_vlocals.pop_back();
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}
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_targetstack.pop_back();
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return npos;
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}
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SQInteger SQFuncState::GetStackSize()
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{
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return _vlocals.size();
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}
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void SQFuncState::SetStackSize(SQInteger n)
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{
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SQInteger size=_vlocals.size();
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while(size>n){
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size--;
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SQLocalVarInfo lvi=_vlocals.back();
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if(type(lvi._name)!=OT_NULL){
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lvi._end_op=GetCurrentPos();
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_localvarinfos.push_back(lvi);
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}
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_vlocals.pop_back();
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}
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}
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bool SQFuncState::IsLocal(SQUnsignedInteger stkpos)
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{
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if(stkpos>=_vlocals.size())return false;
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else if(type(_vlocals[stkpos]._name)!=OT_NULL)return true;
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return false;
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}
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SQInteger SQFuncState::PushLocalVariable(const SQObject &name)
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{
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SQInteger pos=_vlocals.size();
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SQLocalVarInfo lvi;
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lvi._name=name;
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lvi._start_op=GetCurrentPos()+1;
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lvi._pos=_vlocals.size();
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_vlocals.push_back(lvi);
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if(_vlocals.size()>((SQUnsignedInteger)_stacksize))_stacksize=_vlocals.size();
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return pos;
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}
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SQInteger SQFuncState::GetLocalVariable(const SQObject &name)
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{
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SQInteger locals=_vlocals.size();
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while(locals>=1){
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if(type(_vlocals[locals-1]._name)==OT_STRING && _string(_vlocals[locals-1]._name)==_string(name)){
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return locals-1;
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}
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locals--;
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}
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return -1;
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}
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SQInteger SQFuncState::GetOuterVariable(const SQObject &name)
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{
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SQInteger outers = _outervalues.size();
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for(SQInteger i = 0; i<outers; i++) {
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if(_string(_outervalues[i]._name) == _string(name))
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return i;
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}
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return -1;
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}
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void SQFuncState::AddOuterValue(const SQObject &name)
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{
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SQInteger pos=-1;
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if(_parent) {
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pos = _parent->GetLocalVariable(name);
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if(pos == -1) {
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pos = _parent->GetOuterVariable(name);
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if(pos != -1) {
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_outervalues.push_back(SQOuterVar(name,SQObjectPtr(SQInteger(pos)),otOUTER)); //local
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return;
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}
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}
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else {
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_outervalues.push_back(SQOuterVar(name,SQObjectPtr(SQInteger(pos)),otLOCAL)); //local
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return;
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}
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}
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_outervalues.push_back(SQOuterVar(name,name,otSYMBOL)); //global
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}
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void SQFuncState::AddParameter(const SQObject &name)
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{
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PushLocalVariable(name);
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_parameters.push_back(name);
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}
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void SQFuncState::AddLineInfos(SQInteger line,bool lineop,bool force)
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{
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if(_lastline!=line || force){
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SQLineInfo li;
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li._line=line;li._op=(GetCurrentPos()+1);
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if(lineop)AddInstruction(_OP_LINE,0,line);
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_lineinfos.push_back(li);
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_lastline=line;
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}
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}
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void SQFuncState::AddInstruction(SQInstruction &i)
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{
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SQInteger size = _instructions.size();
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if(size > 0 && _optimization){ //simple optimizer
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SQInstruction &pi = _instructions[size-1];//previous instruction
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switch(i.op) {
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case _OP_RETURN:
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if( _parent && i._arg0 != MAX_FUNC_STACKSIZE && pi.op == _OP_CALL && _returnexp < size-1) {
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pi.op = _OP_TAILCALL;
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}
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break;
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case _OP_GET:
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if( pi.op == _OP_LOAD && pi._arg0 == i._arg2 && (!IsLocal(pi._arg0))){
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pi._arg1 = pi._arg1;
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pi._arg2 = (unsigned char)i._arg1;
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pi.op = _OP_GETK;
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pi._arg0 = i._arg0;
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return;
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}
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break;
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case _OP_PREPCALL:
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if( pi.op == _OP_LOAD && pi._arg0 == i._arg1 && (!IsLocal(pi._arg0))){
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pi.op = _OP_PREPCALLK;
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pi._arg0 = i._arg0;
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pi._arg1 = pi._arg1;
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pi._arg2 = i._arg2;
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pi._arg3 = i._arg3;
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return;
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}
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break;
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case _OP_APPENDARRAY:
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if(pi.op == _OP_LOAD && pi._arg0 == i._arg1 && (!IsLocal(pi._arg0))){
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pi.op = _OP_APPENDARRAY;
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pi._arg0 = i._arg0;
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pi._arg1 = pi._arg1;
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pi._arg2 = MAX_FUNC_STACKSIZE;
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pi._arg3 = MAX_FUNC_STACKSIZE;
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return;
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}
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break;
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case _OP_MOVE:
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if((pi.op == _OP_GET || pi.op == _OP_ARITH || pi.op == _OP_BITW) && (pi._arg0 == i._arg1))
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{
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pi._arg0 = i._arg0;
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_optimization = false;
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return;
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}
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if(pi.op == _OP_MOVE)
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{
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pi.op = _OP_DMOVE;
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pi._arg2 = i._arg0;
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pi._arg3 = (unsigned char)i._arg1;
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return;
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}
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break;
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case _OP_LOAD:
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if(pi.op == _OP_LOAD && i._arg1 < 256) {
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pi.op = _OP_DLOAD;
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pi._arg2 = i._arg0;
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pi._arg3 = (unsigned char)i._arg1;
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return;
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}
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break;
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case _OP_EQ:case _OP_NE:
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if(pi.op == _OP_LOAD && pi._arg0 == i._arg1 && (!IsLocal(pi._arg0) ))
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{
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pi.op = i.op;
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pi._arg0 = i._arg0;
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pi._arg1 = pi._arg1;
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pi._arg2 = i._arg2;
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pi._arg3 = MAX_FUNC_STACKSIZE;
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return;
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}
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break;
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case _OP_LOADNULLS:
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if((pi.op == _OP_LOADNULLS && pi._arg0+pi._arg1 == i._arg0)) {
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pi._arg1 = pi._arg1 + 1;
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pi.op = _OP_LOADNULLS;
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return;
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}
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break;
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case _OP_LINE:
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if(pi.op == _OP_LINE) {
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_instructions.pop_back();
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_lineinfos.pop_back();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
_optimization = true;
|
|
_instructions.push_back(i);
|
|
}
|
|
|
|
SQObject SQFuncState::CreateString(const SQChar *s,SQInteger len)
|
|
{
|
|
SQObjectPtr ns(SQString::Create(_sharedstate,s,len));
|
|
_table(_strings)->NewSlot(ns,(SQInteger)1);
|
|
return ns;
|
|
}
|
|
|
|
SQFunctionProto *SQFuncState::BuildProto()
|
|
{
|
|
SQFunctionProto *f=SQFunctionProto::Create(_instructions.size(),
|
|
_nliterals,_parameters.size(),_functions.size(),_outervalues.size(),
|
|
_lineinfos.size(),_localvarinfos.size());
|
|
//f->_literals.resize(_nliterals);
|
|
SQObjectPtr refidx,key,val;
|
|
SQInteger idx;
|
|
|
|
f->_stacksize = _stacksize;
|
|
f->_sourcename = _sourcename;
|
|
f->_bgenerator = _bgenerator;
|
|
f->_name = _name;
|
|
|
|
while((idx=_table(_literals)->Next(false,refidx,key,val))!=-1) {
|
|
f->_literals[_integer(val)]=key;
|
|
refidx=idx;
|
|
}
|
|
|
|
//f->_functions.resize(_functions.size());
|
|
//f->_functions.copy(_functions);
|
|
//f->_parameters.resize(_parameters.size());
|
|
for(SQUnsignedInteger nf = 0; nf < _functions.size(); nf++) f->_functions[nf] = _functions[nf];
|
|
for(SQUnsignedInteger np = 0; np < _parameters.size(); np++) f->_parameters[np] = _parameters[np];
|
|
for(SQUnsignedInteger no = 0; no < _outervalues.size(); no++) f->_outervalues[no] = _outervalues[no];
|
|
for(SQUnsignedInteger no = 0; no < _localvarinfos.size(); no++) f->_localvarinfos[no] = _localvarinfos[no];
|
|
for(SQUnsignedInteger no = 0; no < _lineinfos.size(); no++) f->_lineinfos[no] = _lineinfos[no];
|
|
//f->_outervalues.resize(_outervalues.size());
|
|
//f->_outervalues.copy(_outervalues);
|
|
//f->_instructions.resize(_instructions.size());
|
|
//f->_instructions.copy(_instructions);
|
|
memcpy(f->_instructions,&_instructions[0],_instructions.size()*sizeof(SQInstruction));
|
|
//f->_localvarinfos.resize(_localvarinfos.size());
|
|
//f->_localvarinfos.copy(_localvarinfos);
|
|
//f->_lineinfos.resize(_lineinfos.size());
|
|
//f->_lineinfos.copy(_lineinfos);
|
|
f->_varparams = _varparams;
|
|
|
|
return f;
|
|
}
|
|
|
|
SQFuncState *SQFuncState::PushChildState(SQSharedState *ss)
|
|
{
|
|
SQFuncState *child = (SQFuncState *)sq_malloc(sizeof(SQFuncState));
|
|
new (child) SQFuncState(ss,this,_errfunc,_errtarget);
|
|
_childstates.push_back(child);
|
|
return child;
|
|
}
|
|
|
|
void SQFuncState::PopChildState()
|
|
{
|
|
SQFuncState *child = _childstates.back();
|
|
sq_delete(child,SQFuncState);
|
|
_childstates.pop_back();
|
|
}
|
|
|
|
SQFuncState::~SQFuncState()
|
|
{
|
|
while(_childstates.size() > 0)
|
|
{
|
|
PopChildState();
|
|
}
|
|
}
|