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token.cpp
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token.cpp
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// token.cpp
// Revision 9-oct-2006
#include "token.h"
#include "parser.h"
#include "trace.h"
#include <iostream>
#include <fstream>
#include <sstream>
#include <iomanip>
#include <iterator>
#include <deque>
#include <map>
#include <algorithm>
#include <stdexcept>
namespace pasmo {
namespace impl {
using std::istream;
using std::cout;
using std::cerr;
using std::endl;
using std::istringstream;
using std::ostringstream;
using std::ostream_iterator;
using std::deque;
using std::map;
using std::for_each;
using std::copy;
using std::runtime_error;
using std::logic_error;
namespace token {
//*********************************************************
// class ScanString
//*********************************************************
class ScanString {
public:
ScanString (const string & str);
char get ();
void unget ();
operator void * const () const;
typedef string::size_type pos_type;
pos_type getpos () const;
void setpos (pos_type newpos);
private:
const string & s;
const string::size_type len;
string::size_type pos;
};
ScanString::ScanString (const string & str) :
s (str),
len (str.size () ),
pos (0)
{
}
char ScanString::get ()
{
const char c ( (pos < len) ? s [pos] : '\0');
++pos;
return c;
}
void ScanString::unget ()
{
ASSERT (pos > 0);
--pos;
}
ScanString::operator void * const () const
{
// Return a guaranteed no null as true, null as false.
// Is false after first reading out of the string.
static char truevalue [1]= {};
return pos <= len ?
static_cast <void *> (truevalue) :
static_cast <void *> (0);
}
ScanString::pos_type ScanString::getpos () const
{
return pos;
}
void ScanString::setpos (pos_type newpos)
{
pos= newpos;
}
//*********************************************************
// Auxiliary functions and constants.
//*********************************************************
template <class T, size_t N>
size_t dim_array (const T (&) [N] )
{ return N; }
template <class T, size_t N>
const T * end_array (const T (& t) [N] )
{ return t + dim_array (t); }
const address LiteralRaw= 0;
const address LiteralStyleAsm= 1;
const address LiteralStyleC= 2;
logic_error InvalidFlagConvert ("Inalid flag specified for conversion");
logic_error tokenizerunderflow ("Tokenizer underflowed");
logic_error missingfilename ("Missing filename");
runtime_error unclosed ("Unclosed literal");
logic_error bad_encode ("Bad internal string encoding");
runtime_error invalidhex ("Invalid hexadecimal number");
runtime_error invalidnumber ("Invalid numeric format");
runtime_error outofrange ("Number out of range");
runtime_error needfilename ("Filename required");
runtime_error invalidfilename ("Invalid file name");
typedef map <string, TypeToken> tmap_t;
tmap_t tmapZ80;
tmap_t tmap8080;
typedef map <TypeToken, string> invmap_t;
invmap_t invmapZ80;
invmap_t invmap8080;
struct NameType {
const char * const str;
const TypeToken type;
NameType (const char * str, TypeToken type) :
str (str), type (type)
{ }
};
class MapInserter {
public:
MapInserter (tmap_t & dirmap_n, invmap_t & invmap_n);
void operator () (const NameType & nt);
private:
tmap_t & dirmap;
invmap_t & invmap;
};
MapInserter::MapInserter (tmap_t & dirmap_n, invmap_t & invmap_n) :
dirmap (dirmap_n),
invmap (invmap_n)
{
}
void MapInserter::operator () (const NameType & nt)
{
TypeToken tt= nt.type;
const char * const str= nt.str;
dirmap [str]= tt;
invmap [tt]= str;
}
#define NT(n) NameType (#n, Type ## n)
#define NT_(n) NameType ("." #n, Type_ ## n)
#define NT8080(n) NameType (#n, Type ## n ## _8080)
const NameType ntCommonOpers []= {
NT (MOD),
NT (SHL),
NameType ("<<", TypeShlOp),
NT (SHR),
NameType (">>", TypeShrOp),
NT (NOT),
NT (EQ),
NT (LT),
NT (LE),
NameType ("<=", TypeLeOp),
NT (GT),
NT (GE),
NameType (">=", TypeGeOp),
NT (NE),
NameType ("!=", TypeNeOp),
NT (NUL),
NT (DEFINED),
NT (HIGH),
NT (LOW),
NameType ("&&", TypeBoolAnd),
NameType ("||", TypeBoolOr),
NameType ("##", TypeSharpSharp)
};
const NameType ntCommonDirectives []= {
NT (DEFB),
NT (DB),
NT (DEFM),
NT (DEFW),
NT (DW),
NT (DEFS),
NT (DS),
NT (EQU),
NT (ASEG),
NT (CSEG),
NT (DSEG),
NT (COMMON),
NT (ORG),
NT (INCLUDE),
NT (INCBIN),
NT (IF),
NT (IF1),
NT (IF2),
NT (IFDEF),
NT (IFNDEF),
NT (ELSE),
NT (ENDIF),
NT (EXTRN),
NT (PUBLIC),
NT (END),
NT (LOCAL),
NT (PROC),
NT (ENDP),
NT (MACRO),
NT (ENDM),
NT (EXITM),
NT (REPT),
NT (IRP),
NT (IRPC),
// Directives with .
NT_ (8080),
NT_ (8086),
NT_ (ERROR),
NT_ (WARNING),
NT_ (SHIFT),
NT_ (PHASE),
NT_ (DEPHASE),
NT_ (Z80)
};
const NameType ntCommonRegs []= {
NT (A),
NT (B),
NT (C),
NT (D),
NT (E),
NT (H),
NT (L),
NT (SP)
};
const NameType ntNemCommon []= {
NT (DAA),
NT (DI),
NT (EI),
NT (NOP),
};
const NameType ntNemZ80 []= {
NT (ADC),
NT (ADD),
NT (AND),
NT (BIT),
NT (CALL),
NT (CCF),
NT (CP),
NT (CPD),
NT (CPDR),
NT (CPI),
NT (CPIR),
NT (CPL),
NT (DEC),
NT (DJNZ),
NT (EX),
NT (EXX),
NT (HALT),
NT (IM),
NT (IN),
NT (INC),
NT (IND),
NT (INDR),
NT (INI),
NT (INIR),
NT (JP),
NT (JR),
NT (LD),
NT (LDD),
NT (LDDR),
NT (LDI),
NT (LDIR),
NT (NEG),
NT (OR),
NT (OTDR),
NT (OTIR),
NT (OUT),
NT (OUTD),
NT (OUTI),
NT (POP),
NT (PUSH),
NT (RES),
NT (RET),
NT (RETI),
NT (RETN),
NT (RL),
NT (RLA),
NT (RLC),
NT (RLCA),
NT (RLD),
NT (RR),
NT (RRA),
NT (RRC),
NT (RRCA),
NT (RRD),
NT (RST),
NT (SBC),
NT (SCF),
NT (SET),
NT (SLA),
NT (SLL),
NT (SRA),
NT (SRL),
NT (SUB),
NT (XOR)
};
const NameType ntOtherZ80 []= {
// Registers.
NT (AF),
NameType ("AF'", TypeAFp),
NT (BC),
NT (DE),
NT (HL),
NT (IX),
NT (IXH),
NT (IXL),
NT (IY),
NT (IYH),
NT (IYL),
NT (I),
NT (R),
// Flags (C is listed as register)
NT (NZ),
NT (Z),
NT (NC),
NT (PO),
NT (PE),
NT (P),
NT (M),
// Directives
NT (DEFL)
};
const NameType ntNem8080 []= {
NT8080 (ADC),
NT8080 (ADD),
NT8080 (ACI),
NT8080 (ADI),
NT8080 (ANA),
NT8080 (ANI),
NT8080 (CALL),
NT8080 (CC),
NT8080 (CM),
NT8080 (CMA),
NT8080 (CMC),
NT8080 (CMP),
NT8080 (CNC),
NT8080 (CNZ),
NT8080 (CP),
NT8080 (CPE),
NT8080 (CPI),
NT8080 (CPO),
NT8080 (CZ),
NT8080 (DAD),
NT8080 (DCR),
NT8080 (DCX),
NT8080 (HLT),
NT8080 (IN),
NT8080 (INR),
NT8080 (INX),
NT8080 (JC),
NT8080 (JM),
NT8080 (JMP),
NT8080 (JNC),
NT8080 (JNZ),
NT8080 (JP),
NT8080 (JPE),
NT8080 (JPO),
NT8080 (JZ),
NT8080 (LDA),
NT8080 (LDAX),
NT8080 (LHLD),
NT8080 (LXI),
NT8080 (MVI),
NT8080 (MOV),
NT8080 (ORA),
NT8080 (ORI),
NT8080 (OUT),
NT8080 (PCHL),
NT8080 (POP),
NT8080 (PUSH),
NT8080 (RAL),
NT8080 (RAR),
NT8080 (RLC),
NT8080 (RC),
NT8080 (RRC),
NT8080 (RET),
NT8080 (RM),
NT8080 (RNC),
NT8080 (RNZ),
NT8080 (RP),
NT8080 (RPE),
NT8080 (RPO),
NT8080 (RST),
NT8080 (RZ),
NT8080 (SBB),
NT8080 (SBI),
NT8080 (SHLD),
NT8080 (SPHL),
NT8080 (STA),
NT8080 (STAX),
NT8080 (STC),
NT8080 (SUB),
NT8080 (SUI),
NT8080 (XCHG),
NT8080 (XRA),
NT8080 (XRI),
NT8080 (XTHL)
};
const NameType ntOther8080 []= {
// Operators.
NT8080 (AND),
NT8080 (OR),
NT8080 (XOR),
// Registers.
NT8080 (M),
NT8080 (PSW),
// Directives
NT8080 (SET)
};
class mapiniter {
mapiniter ();
static mapiniter instance;
};
mapiniter mapiniter::instance;
mapiniter::mapiniter ()
{
const NameType * endCommonOpers= end_array (ntCommonOpers);
const NameType * endCommonRegs= end_array (ntCommonRegs);
const NameType * endCommonDirectives= end_array (ntCommonDirectives);
const NameType * endNemCommom= end_array (ntNemCommon);
const NameType * endNemZ80= end_array (ntNemZ80);
const NameType * endNem8080= end_array (ntNem8080);
const NameType * endOtherZ80= end_array (ntOtherZ80);
const NameType * endOther8080= end_array (ntOther8080);
MapInserter mapsZ80 (tmapZ80, invmapZ80);
MapInserter maps8080 (tmap8080, invmap8080);
// Common parts.
for_each (ntCommonOpers, endCommonOpers, mapsZ80);
for_each (ntCommonOpers, endCommonOpers, maps8080);
for_each (ntCommonRegs, endCommonRegs, mapsZ80);
for_each (ntCommonRegs, endCommonRegs, maps8080);
for_each (ntCommonDirectives, endCommonDirectives, mapsZ80);
for_each (ntCommonDirectives, endCommonDirectives, maps8080);
for_each (ntNemCommon, endNemCommom, mapsZ80);
for_each (ntNemCommon, endNemCommom, maps8080);
// Z80 parts
for_each (ntNemZ80, endNemZ80, mapsZ80);
for_each (ntOtherZ80, endOtherZ80, mapsZ80);
// 8080 parts
for_each (ntNem8080, endNem8080, maps8080);
for_each (ntOther8080, endOther8080, maps8080);
}
TypeToken getliteraltokeninmap (const string & str, const tmap_t & map)
{
tmap_t::const_iterator it= map.find (upper (str) );
if (it != map.end () )
return it->second;
else
return TypeUndef;
}
TypeToken getliteraltoken (const string & str, AsmMode asmmode)
{
switch (asmmode)
{
case AsmZ80:
return getliteraltokeninmap (str, tmapZ80);
case Asm8080:
return getliteraltokeninmap (str, tmap8080);
default:
throw logic_error ("Unexpected assembly type");
}
}
class addescaped {
public:
addescaped (string & str) : str (str)
{ }
void operator () (char c);
private:
string & str;
};
void addescaped::operator () (char c)
{
unsigned char c1= c;
if (c1 >= ' ' && c1 < 128)
str+= c;
else
{
str+= "\\x";
str+= hex2str (c1);
}
}
string escapestr (const string & str)
{
string result;
for_each (str.begin (), str.end (), addescaped (result) );
return result;
}
string unescapestringasm (const string & s)
{
TRFUNC (tr, "unescapestringasm");
TRMESSAGE (tr, s);
string result (s);
string::size_type pos= 0;
while ( (pos= result.find ('\'', pos) ) != string::npos)
{
result.erase (pos, 1);
ASSERT (result [pos] == '\'');
++pos;
}
TRMESSAGE (tr, result);
return result;
}
string unescapestringc (const string & s)
{
ScanString iss (s);
string str;
for (;;)
{
char c= iss.get ();
if (! iss)
return str;
if (c == '"')
throw bad_encode;
if (c == '\\')
{
c= iss.get ();
if (! iss)
throw bad_encode;
switch (c)
{
case '\\': break;
case 'n': c= '\n'; break;
case 'r': c= '\r'; break;
case 't': c= '\t'; break;
case 'a': c= '\a'; break;
case '"': break;
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
c-= '0';
for (size_t i= 0; i < 2; ++i)
{
char c2= iss.get ();
if (! iss)
break;
if (c2 < '0' || c2 > '7')
{
iss.unget ();
break;
}
c*= 8;
c+= c2 - '0';
}
break;
case 'x': case 'X':
{
char x [3]= { 0 };
for (size_t i= 0; i < 2; ++i)
{
c= iss.get ();
if (! iss)
break;
if (! ischarhex (c) )
{
iss.unget ();
break;
}
x [i]= c;
}
c= strtoul (x, NULL, 16);
}
break;
}
str+= c;
}
else
str+= c;
}
}
} // namespace token
using namespace token;
//*********************************************************
// Extern functions.
//*********************************************************
string gettokenname (TypeToken tt)
{
invmap_t::iterator it= invmapZ80.find (tt);
if (it != invmapZ80.end () )
{
return it->second;
}
else
{
it= invmap8080.find (tt);
if (it != invmap8080.end () )
{
return it->second;
}
else
{
switch (tt)
{
case TypeEndLine:
return "(end of line)";
case TypeComment:
return "(comment)";
case TypeIdentifier:
return "(identifier)";
case TypeLiteral:
return "(literal)";
case TypeNoFileINCLUDE:
return "INCLUDE (no file)";
default:
return string (1, static_cast <char> (tt) );
}
}
}
}
//*********************************************************
// class Token
//*********************************************************
Token::Token () :
tt (TypeUndef)
{
}
Token::Token (TypeToken ttn) :
tt (ttn)
{
}
Token::Token (address n) :
tt (TypeNumber),
number (n)
{
}
Token::Token (address n, const string & sn) :
tt (TypeNumber),
s (sn),
number (n)
{
}
Token::Token (char c) :
tt (TypeLiteral),
s (string (1, c) )
{
}
Token::Token (TypeToken ttn, const string & sn, address style) :
tt (ttn),
s (sn),
number (style)
{
ASSERT (ttn == TypeLiteral || style == LiteralRaw);
}
TypeToken Token::type () const
{
return tt;
}
bool Token::isliteral () const
{
return tt == TypeLiteral;
}
string Token::raw () const
{
switch (tt)
{
case TypeIdentifier:
case TypeMacroName:
case TypeMacroArg:
return s;
case TypeNumber:
return numstr ();
case TypeLiteral:
switch (number)
{
case LiteralRaw:
return s;
case LiteralStyleAsm:
return '\'' + s + '\'';
case LiteralStyleC:
return '\"' + s + '\"';
default:
throw logic_error ("Unexpected type of literal");
}
case TypeWhiteSpace:
if (s.empty () )
return " ";
else
return s;
case TypeComment:
return ';' + s;
default:
if (s.empty () )
return str ();
else
return s;
}
}
string Token::str () const
{
switch (tt)
{
case TypeUndef:
return "(undef)";
case TypeEndLine:
return "(end of line)";
case TypeComment:
return s;
case TypeIdentifier:
return s;
case TypeLiteral:
return literal ();
case TypeMacroName:
return s;
case TypeMacroArg:
return s;
case TypeNumber:
if (s.empty () )
return "0" + hex4str (number) + "h";
else
return s;
case TypeWhiteSpace:
return " ";
default:
return gettokenname (tt);
}
}
address Token::num () const
{
ASSERT (tt == TypeNumber);
return number;
}
string Token::numstr () const
{
ASSERT (tt == TypeNumber);
if (s.empty () )
{
ostringstream oss;
oss << number;
return oss.str ();
}
else
return s;
}
string Token::literal () const
{
ASSERT (tt == TypeLiteral);
switch (number)
{
case LiteralRaw:
return s;
case LiteralStyleAsm:
return unescapestringasm (s);
case LiteralStyleC:
return unescapestringc (s);
default:
throw logic_error ("Unexpected type of literal");
}
}
string Token::identifier () const
{
ASSERT (tt == TypeIdentifier);
return s;
}
string Token::macroname () const
{
ASSERT (tt == TypeMacroName);
return s;
}
string Token::macroarg () const
{
ASSERT (tt == TypeMacroArg);
return s;
}
ostream & operator << (ostream & oss, const Token & tok)
{
oss << tok.raw ();
return oss;
}
//*********************************************************
// Tokenizer auxiliary functions.
//*********************************************************
namespace tokenizer {
class UnexpectedChar : public runtime_error {
public:
UnexpectedChar (char c) :
runtime_error ("Unexpected character: " + chartostr (c) )
{ }
private:
static string chartostr (char c)
{
string r;
if (c < 32 || c >= 127)
r= '&' + hex2str (c);
else
{
r= '\'';
r+= c;
r+= '\'';
}
return r;
}
};
Token parseidentifier (ScanString & iss, char c, AsmMode asmmode)
{
//TRFUNC (tr, "parseidentifier");
string str;
// Check conditional operator.
if (c == '?')
{
str+= '?';
c= iss.get ();
if (! ischaridentifier (c) )
{
iss.unget ();
return Token (TypeQuestion);
}
}
do
{
str+= c;
c= iss.get ();
} while (ischaridentifier (c) );
iss.unget ();
const string rawstr (str);
TypeToken tt= getliteraltoken (str, asmmode);
if (tt == TypeUndef)
{
//stripdollar (str);
//TRMESSAGE (tr, "Identifier: " + str);
return Token (TypeIdentifier, str);
}
else
{
if (tt == TypeAF && c == '\'')
{
iss.get ();
tt= TypeAFp;
}
return Token (tt, rawstr);
}
}
Token parseless (ScanString & iss)
{
//TRFUNC (tr, "parseless");
char c= iss.get ();
switch (c)
{
case '=':
return Token (TypeLeOp);
case '<':
return Token (TypeShlOp);
default:
iss.unget ();
return Token (TypeLtOp);
}
}
Token parsegreat (ScanString & iss)
{
//TRFUNC (tr, "parsegreat");
char c= iss.get ();
switch (c)
{
case '=':
return Token (TypeGeOp);
case '>':
return Token (TypeShrOp);
default:
iss.unget ();
return Token (TypeGtOp);
}
}
Token parsenot (ScanString & iss)
{
//TRFUNC (tr, "parsenot");
char c= iss.get ();
switch (c)
{
case '=':
return Token (TypeNeOp);
default:
iss.unget ();
return Token (TypeBoolNotOp);
}
}
Token parsestringc (ScanString & iss)
{
//TRFUNC (tr, "parsestringc");
string str;
for (;;)
{
char c= iss.get ();
if (! iss)
throw unclosed;
if (c == '"')
{
return Token (TypeLiteral, str, LiteralStyleC);
}
if (c == '\\')
{
str+= c;
c= iss.get ();
if (! iss)
throw unclosed;
str+= c;