kolibrios/programs/cmm/experimental/lisp/lisp.c

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/*
* Author Pavel Iakovlev by PaulCodeman
*/
#define MEMSIZE 4096*10
#include "../lib/io.h"
#include "../lib/obj/console.h"
#define TString 1
#define TSymbol 2
#define TNumber 3
#define TList 4
#define Proc 5
#define Lambda 6
#define TObject 7
#define sizeStruct 4*4
byte initConsole = 0;
dword maxLoop = 100;
dword buffer = 0;
dword bufferSize = 1000;
dword variable = 0;
dword key = 0;
dword treeItem = 0;
dword NIL = 0;
void consoleInit()
{
IF(!initConsole)
{
load_dll(libConsole, #con_init, 0);
con_init stdcall (-1, -1, -1, -1, "Lisp interpreter");
initConsole = 0xFF;
}
}
dword error_message(dword text)
{
con_printf stdcall (text);
ExitProcess();
}
dword crc32Table = 0;
dword makeCRCTable(void)
{
dword i = 0;
dword c = 0;
dword ii = 0;
dword crcTable = 0;
IF (crc32Table) RETURN 0;
crc32Table = malloc(4*256);
crcTable = crc32Table;
WHILE (i < 256)
{
c = i;
ii = 0;
WHILE (ii < 8)
{
IF (c&1)
{
c >>= 1;
c ^= 0xEDB88320;
}
ELSE c >>= 1;
ii++;
}
DSDWORD[crcTable] = c;
crcTable += 4;
i++;
}
}
dword crc32(dword bytes)
{
dword crc = 0;
byte b = 0;
IF (!crc32Table) makeCRCTable();
crc = 0xFFFFFFFF;
WHILE (DSBYTE[bytes])
{
b = DSBYTE[bytes];
bytes++;
EDX = crc^b;
EDX &= 0xFF;
EDX <<= 2;
EDX += crc32Table;
crc >>= 8;
crc ^= DSDWORD[EDX];
}
RETURN crc ^ 0xFFFFFFFF;
}
dword indexArray(dword address, key)
{
dword offset = key&11b;
dword offsetAddress = offset*4+address;
IF (key==offset) RETURN 4*4+offsetAddress;
IF (!DSDWORD[offsetAddress]) DSDWORD[offsetAddress] = malloc(4*4*2);
RETURN indexArray(DSDWORD[offsetAddress], key>>2);
}
void set_procedure(dword name, address)
{
dword data = 0;
data = malloc(sizeStruct);
DSDWORD[data] = Proc;
DSDWORD[data+4] = address;
indexArray(variable, crc32(name));
DSDWORD[EAX] = data;
}
void set_variable(dword name, data)
{
indexArray(variable, crc32(name));
DSDWORD[EAX] = data;
}
dword string(dword lisp)
{
dword buffer = 0;
if (DSDWORD[lisp] == TList)
{
return "";
}
switch (DSDWORD[lisp])
{
case TString:
case TSymbol:
return DSDWORD[lisp+4];
case TNumber:
return itoa(DSDWORD[lisp+4]);
case Lambda:
return "[LAMBDA]";
case Proc:
return "[PROC]";
case TObject:
return "[OBJECT]";
case TList:
return "[LIST]";
}
}
dword number(dword lisp)
{
if (DSDWORD[lisp] == TNumber)
{
return DSDWORD[lisp+4];
}
if (DSDWORD[lisp] == TString)
{
//return atoi(DSDWORD[lisp+4]);
}
return 0;
}
dword lexer(dword code)
{
byte s = 0;
dword alloc = 0;
dword buffer = 0;
dword position = 0;
dword key = 0;
alloc = malloc(32);
//con_printf stdcall(code);
while(DSBYTE[code])
{
s = DSBYTE[code];
code++;
if (s == ' ') || (s == '\n') || (s == '\t') || (s == '\r') continue;
if (s == '(') || (s == ')')
{
buffer = malloc(2);
DSBYTE[buffer] = s;
indexArray(alloc, key);
DSDWORD[EAX] = buffer;
key++;
continue;
}
buffer = malloc(25);
position = buffer;
DSBYTE[position] = s;
if (s == '"')
{
while(DSBYTE[code])
{
s = DSBYTE[code];
position++;
DSBYTE[position] = s;
code++;
if (s == '"') && (DSBYTE[code-2] != '\\') break;
}
}
else
{
while(DSBYTE[code])
{
s = DSBYTE[code];
if (s == ' ') || (s == '\n') || (s == '\t') || (s == '\r') || (s == '(') || (s == ')') break;
position++;
DSBYTE[position] = s;
code++;
}
}
indexArray(alloc, key);
DSDWORD[EAX] = buffer;
key++;
}
indexArray(alloc, key);
DSDWORD[EAX] = 0;
/*key = 0;
do {
buffer = indexArray(alloc, key);
if (!DSDWORD[buffer]) break;
con_printf stdcall ("\r\n");
con_printf stdcall (DSDWORD[buffer]);key++;
} while(1);*/
return alloc;
}
dword tree(dword alloc)
{
dword token = 0;
dword list = 0;
dword buffer = 0;
dword temp = 0;
dword listBuffer = 0;
dword i = 0;
token = indexArray(alloc, treeItem);
treeItem++;
buffer = DSDWORD[token];
if (DSBYTE[buffer] == '(')
{
list = malloc(32);
while(1) {
token = indexArray(alloc, treeItem);
token = DSDWORD[token];
if (!token) || (DSBYTE[token] == ')') break;
buffer = indexArray(list, i);
DSDWORD[buffer] = tree(alloc);
i++;
}
treeItem++;
indexArray(list, i);
DSDWORD[EAX] = 0;
malloc(sizeStruct);
DSDWORD[EAX] = TList;
DSDWORD[EAX+4] = list;
return EAX;
}
return atom(DSDWORD[token]);
}
dword hexdec2(dword buffer, length)
{
dword r = 0;
length += buffer;
while (length != buffer)
{
length--;
r <<= 4;
if (DSBYTE[length] >= 'A') && (DSBYTE[length] <= 'F') r |= DSBYTE[length]-'A'+10;
else if (DSBYTE[length] >= 'a') && (DSBYTE[length] <= 'f') r |= DSBYTE[length]-'a'+10;
else if (DSBYTE[length] >= '0') && (DSBYTE[length] <= '9') r |= '9'-DSBYTE[length];
}
return r;
}
dword atom(dword token)
{
dword buffer = 0;
dword pos = 0;
dword data = 0;
if (DSBYTE[token] == '-') && (DSBYTE[token+1] >= '0') && (DSBYTE[token+1] <= '9')
{
malloc(sizeStruct);
DSDWORD[EAX] = TNumber;
DSDWORD[EAX+4] = atoi(token);
return EAX;
}
if (DSBYTE[token] >= '0') && (DSBYTE[token] <= '9')
{
while (DSBYTE[token]) && (DSBYTE[token] >= '0') && (DSBYTE[token] <= '9')
{
data *= 10;
data += DSBYTE[token]-'0';
token++;
}
malloc(sizeStruct);
DSDWORD[EAX] = TNumber;
DSDWORD[EAX+4] = data;
return EAX;
}
if (DSBYTE[token] == '"')
{
pos = token;
buffer = token;
pos++;
while (DSBYTE[pos]) && (DSBYTE[pos] != '"')
{
if (DSBYTE[pos] == '\\')
{
pos++;
switch (DSBYTE[pos])
{
case 'n': DSBYTE[buffer] = 13; break;
case 'r': DSBYTE[buffer] = 10; break;
case 't': DSBYTE[buffer] = 9; break;
case 'x':
pos++;
DSBYTE[buffer] = hexdec2(pos, 2);
pos++;
break;
default:
DSBYTE[buffer] = DSBYTE[pos];
}
}
else DSBYTE[buffer] = DSBYTE[pos];
buffer++;
pos++;
}
DSBYTE[buffer] = 0;
malloc(sizeStruct);
DSDWORD[EAX] = TString;
DSDWORD[EAX+4] = token;
DSDWORD[EAX+8] = token-buffer;
return EAX;
}
pos = token;
while (DSBYTE[pos])
{
if (DSBYTE[pos] >= 'a') && (DSBYTE[pos] <= 'z') DSBYTE[pos] = DSBYTE[pos]-'a'+'A';
pos++;
}
malloc(sizeStruct);
DSDWORD[EAX] = TSymbol;
DSDWORD[EAX+4] = token;
return EAX;
}
dword lisp(dword tree)
{
dword buffer = 0;
dword list = 0;
dword args = 0;
dword key = 0;
dword item = 0;
switch (DSDWORD[tree])
{
case TSymbol:
buffer = indexArray(variable, crc32(DSDWORD[tree+4]));
IF (!DSDWORD[buffer]) return tree;
return DSDWORD[buffer];
case TNumber:
case TString:
return tree;
case TList:
list = DSDWORD[tree+4];
buffer = indexArray(list, 0);
if (!buffer) {
malloc(sizeStruct);
DSDWORD[buffer] = TSymbol;
DSDWORD[buffer+4] = NIL;
return buffer;
}
buffer = DSDWORD[buffer];
if (DSDWORD[buffer] == TSymbol) || (DSDWORD[buffer] == TList)
{
buffer = DSDWORD[buffer+4];
if (DSBYTE[buffer] == '\'') return tree;
args = malloc(32);
key = 0;
while (1)
{
buffer = indexArray(list, key);
buffer = DSDWORD[buffer];
if (!buffer) break;
item = indexArray(args, key);
DSDWORD[item] = lisp(buffer);
key++;
}
item = indexArray(args, 0);
item = DSDWORD[item];
if (DSDWORD[item] == Proc)
{
EAX = DSDWORD[item+4];
EAX(args);
if (!EAX)
{
malloc(sizeStruct);
DSDWORD[EAX] = TSymbol;
DSDWORD[EAX+4] = NIL;
return EAX;
}
return EAX;
}
malloc(sizeStruct);
DSDWORD[EAX] = TSymbol;
DSDWORD[EAX+4] = NIL;
return EAX;
}
malloc(sizeStruct);
DSDWORD[EAX] = TSymbol;
DSDWORD[EAX+4] = NIL;
return EAX;
}
}
#include "stdcall.h"
void main()
{
dword xxx = 0;
dword item = 0;
dword data = 0;
buffer = malloc(bufferSize);
variable = malloc(32);
NIL = "NIL";
initFunctionLisp();
if(DSBYTE[I_Param])
{
IF(io.read(I_Param))
{
lisp(tree(lexer(EAX)));
}
}
else
{
consoleInit();
con_printf stdcall ("Lisp v2.0\r\n");
while(maxLoop)
{
treeItem = 0;
con_printf stdcall ("\r\n$ ");
con_gets stdcall(buffer+1, bufferSize);
DSBYTE[buffer] = '(';
xxx= lisp(tree(lexer(buffer)));
con_printf stdcall (string(xxx));
maxLoop--;
}
}
IF(initConsole) con_exit stdcall (1);
ExitProcess();
}