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cell.c
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cell.c
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/*
* generate basic symbol e.g. T nil ...
* generate class
* functions that make cell for data structures.
* functions to access cell data
*
* symbol data structure
* ISLisp is lisp-2
* symbol-address car=function-addr, cdr=global-val closure
* function-address car=arg+body, cdr=environment
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <math.h>
#include <stdint.h>
#include <pthread.h>
#include "eisl.h"
#include "compat/nana_stubs.h"
#include "mem.h"
#include "fmt.h"
#include "except.h"
#include "str.h"
void init_cell(void)
{
int addr, x;
/* initialize heap area */
for (addr = 0; addr < CELLSIZE; addr++) {
SET_CDR(addr, addr + 1);
}
hp[0] = 0;
fc[0] = CELLSIZE;
/* hash table for symbol */
for (x = 0; x < HASHTBSIZE; x++)
cell_hash_table[x] = NIL;
/* 0th address is for NIL, set initial environment */
make_sym("NIL"); /* 0th address NIL */
SET_AUX(NIL, CLASS_NULL); /* class of nil is null */
SET_OPT(NIL, CONSTN);
make_sym("T"); /* 2nd address is T */
SET_AUX(T, CLASS_SYMBOL); /* class of t is symbol */
SET_OPT(T, CONSTN);
make_sym("<undef>"); /* 4th address is UNDEF */
SET_AUX(UNDEF, CLASS_SYMBOL); /* class of <undef> is symbol */
make_sym("<file-end>"); /* 6th address is FEND */
SET_AUX(FEND, CLASS_SYMBOL); /* class of <end-of-file> is symbol */
int i;
for (i = 0; i < PARASIZE; i++) {
ep[i] = 0;
dp[i] = 0;
sp[i] = 0;
ap[i] = 0;
}
}
void bind_class(const char *name, int cl)
{
int sym;
sym = make_sym(name);
SET_AUX(sym, cl);
SET_OPT(cl, SYSTEM); /* built-in-class */
SET_OPT(sym, SYSTEM); /* symbol formated by <***> are built-in-classes */
}
/* class aux = ((format-string . error-msg)(format-arguments . args)) */
void init_err_args(int cl)
{
int vars, args;
vars = list11(cons(make_sym("a"), UNDEF), // format-string
cons(make_sym("b"), UNDEF), // format-arguments
cons(make_sym("c"), UNDEF), // function
cons(make_sym("d"), UNDEF), // operation
cons(make_sym("e"), UNDEF), // operands
cons(make_sym("f"), UNDEF), // object
cons(make_sym("g"), UNDEF), // expected-class
cons(make_sym("h"), UNDEF), // string
cons(make_sym("i"), UNDEF), // stream
cons(make_sym("j"), UNDEF), // name
cons(make_sym("k"), UNDEF)); // namespace
SET_CDR(cl, vars);
args = list11(cons(make_sym("format-string"), make_sym("a")),
cons(make_sym("format-arguments"), make_sym("b")),
cons(make_sym("function"), make_sym("c")),
cons(make_sym("operation"), make_sym("d")),
cons(make_sym("operands"), make_sym("e")),
cons(make_sym("object"), make_sym("f")),
cons(make_sym("expected-class"), make_sym("g")),
cons(make_sym("string"), make_sym("h")),
cons(make_sym("stream"), make_sym("i")),
cons(make_sym("name"), make_sym("j")),
cons(make_sym("namespace"), make_sym("k")));
SET_AUX(cl, args);
}
void init_class(void)
{
cobject = make_class("object", NIL);
cbasic_array = make_class("basic-array", cobject);
cbasic_array_star = make_class("basic-array*", cbasic_array);
cgeneral_array_star = make_class("general-array*", cbasic_array_star);
cbasic_vector = make_class("basic-vector", cbasic_array);
cgeneral_vector = make_class("general-vector", cbasic_vector);
cstring = make_class("string", cbasic_vector);
cbuilt_in_class = make_class("built-in-class", cbuilt_in_class);
ccharacter = make_class("character", cobject);
cfunction = make_class("function", cobject);
cgeneric_function = make_class("generic-function", cfunction);
cstandard_generic_function =
make_class("standard-generic-function", cgeneric_function);
clist = make_class("list", cobject);
ccons = make_class("cons", clist);
cnull =
make_class("null",
list2(make_sym("<SYMBOL>"), make_sym("<LIST>")));
csymbol = make_class("symbol", cobject);
cnumber = make_class("number", cobject);
cfloat = make_class("float", cnumber);
cinteger = make_class("integer", cnumber);
cserious_condition = make_class("serious-condition", cobject);
cerror = make_class("error", cserious_condition);
carithmetic_error = make_class("arithmetic-condition", cerror);
cdivision_by_zero = make_class("division-by-zero", carithmetic_error);
cfloating_point_overflow =
make_class("floating-point-overflow", carithmetic_error);
cfloating_point_underflow =
make_class("floating-point-underflow", carithmetic_error);
ccontrol_error = make_class("control-error", cerror);
cparse_error = make_class("parse-error", cerror);
cprogram_error = make_class("program-error", cerror);
cdomain_error = make_class("domain-error", cprogram_error);
cclass_error = make_class("class-error", cprogram_error);
cundefined_entity = make_class("undefined-entity", cprogram_error);
cunbound_variable = make_class("unbound-variable", cundefined_entity);
cundefined_function =
make_class("undefined-function", cundefined_entity);
csimple_error = make_class("simple-error", cerror);
cstream_error = make_class("stream-error", cerror);
cend_of_stream = make_class("end-of-stream", cstream_error);
cstorage_exhausted =
make_class("storage-exhausted", cserious_condition);
cstandard_class = make_class("standard-class", cobject);
cstandard_object = make_class("standard-object", cobject);
cstream = make_class("stream", cobject);
cinvalid = make_class("invalid", cinvalid);
cfixnum = make_class("fixnum", cinteger);
clongnum = make_class("longnum", cinteger);
cbignum = make_class("bignum", cinteger);
bind_class("<OBJECT>", cobject);
bind_class("<BASIC-ARRAY>", cbasic_array);
bind_class("<GENERAL-ARRAY*>", cgeneral_array_star);
bind_class("<BASIC-ARRAY*>", cbasic_array_star);
bind_class("<BASIC-VECTOR>", cbasic_vector);
bind_class("<GENERAL-VECTOR>", cgeneral_vector);
bind_class("<STRING>", cstring);
bind_class("<BUILT-IN-CLASS>", cbuilt_in_class);
bind_class("<CHARACTER>", ccharacter);
bind_class("<FUNCTION>", cfunction);
bind_class("<GENERIC-FUNCTION>", cgeneric_function);
bind_class("<STANDARD-GENERIC-FUNCTION>", cstandard_generic_function);
bind_class("<LIST>", clist);
bind_class("<CONS>", ccons);
bind_class("<NULL>", cnull);
bind_class("<SYMBOL>", csymbol);
bind_class("<NUMBER>", cnumber);
bind_class("<FLOAT>", cfloat);
bind_class("<INTEGER>", cinteger);
bind_class("<SERIOUS-CONDITION>", cserious_condition);
bind_class("<ERROR>", cerror);
bind_class("<ARITHMETIC-ERROR>", carithmetic_error);
bind_class("<DIVISION-BY-ZERO>", cdivision_by_zero);
bind_class("<FLOATING-POINT-OVERFLOW>", cfloating_point_overflow);
bind_class("<FLOATING-POINT-UNDERFLOW>", cfloating_point_underflow);
bind_class("<CONTROL-ERROR>", ccontrol_error);
bind_class("<PARSE-ERROR>", cparse_error);
bind_class("<PROGRAM-ERROR>", cprogram_error);
bind_class("<DOMAIN-ERROR>", cdomain_error);
bind_class("<CLASS-ERROR>", cclass_error);
bind_class("<UNDEFINED-ENTITY>", cundefined_entity);
bind_class("<UNBOUND-VARIABLE>", cunbound_variable);
bind_class("<UNDEFINED-FUNCTION>", cundefined_function);
bind_class("<SIMPLE-ERROR>", csimple_error);
bind_class("<STREAM-ERROR>", cstream_error);
bind_class("<END-OF-STREAM>", cend_of_stream);
bind_class("<STORAGE-EXHAUSTED>", cstorage_exhausted);
bind_class("<STANDARD-CLASS>", cstandard_class);
bind_class("<STANDARD-OBJECT>", cstandard_object);
bind_class("<STREAM>", cstream);
bind_class("<INVALID>", cinvalid);
bind_class("<FIXNUM>", cfixnum);
bind_class("<LONGNUM>", clongnum);
bind_class("<BIGNUM>", cbignum);
init_err_args(cserious_condition);
init_err_args(cerror);
init_err_args(carithmetic_error);
init_err_args(cdivision_by_zero);
init_err_args(cfloating_point_overflow);
init_err_args(cfloating_point_underflow);
init_err_args(ccontrol_error);
init_err_args(cparse_error);
init_err_args(cprogram_error);
init_err_args(cdomain_error);
init_err_args(cclass_error);
init_err_args(cundefined_entity);
init_err_args(cunbound_variable);
init_err_args(cundefined_function);
init_err_args(csimple_error);
init_err_args(cstream_error);
init_err_args(cend_of_stream);
init_err_args(cstorage_exhausted);
ENSURE(cnull == CLASS_NULL && csymbol == CLASS_SYMBOL);
}
void init_stream(void)
{
standard_input = make_stm(stdin, EISL_INPUT, "standard-input");
standard_output = make_stm(stdout, EISL_OUTPUT, "standard-output");
standard_error = make_stm(stderr, EISL_OUTPUT, "error-output");
}
int freshcell(void)
{
int res;
pthread_mutex_lock(&mutex);
res = hp[0];
hp[0] = GET_CDR(hp[0]);
SET_CDR(res, 0);
fc[0]--;
pthread_mutex_unlock(&mutex);
if (fc[0] <= 50 && !handling_resource_err) {
handling_resource_err = true;
error(RESOURCE_ERR, "freshcell", NIL, 0);
}
return (res);
}
int tfreshcell(int th)
{
int res;
res = hp[th];
hp[th] = GET_CDR(hp[th]);
SET_CDR(res, 0);
fc[th]--;
if (fc[th] <= 50 && !handling_resource_err) {
handling_resource_err = true;
error(RESOURCE_ERR, "tfreshcell", NIL, 0);
}
return (res);
}
/* set value to environment by destructive by deep-bind */
void set_lex_env(int sym, int val, int th)
{
int addr;
addr = assq(sym, ep[th]);
if (addr == FAILSE)
add_lex_env(sym, val, th);
else {
SET_CDR(addr, val);
}
}
/* bind value to dynamic environment */
int set_dyn_env(int sym, int val, int th)
{
int i;
for (i = dp[th] - 1; i >= 0; i--) {
if (dynamic[i][0][th] == sym) {
dynamic[i][1][th] = val;
return (T);
}
}
dynamic[dp[th]][0][th] = sym;
dynamic[dp[th]][1][th] = val;
dp[th]++;
if (dp[th] >= DYNSIZE)
error(VARIABLE_OVERF, "set_dyn_env", NIL, 0);
return (T);
}
/* additinal of lexical variable */
void add_lex_env(int sym, int val, int th)
{
ep[th] = tcons(tcons(sym, val, th), ep[th], th);
}
/* addition of dynamic variable */
int add_dyn_env(int sym, int val, int th)
{
dynamic[dp[th]][0][th] = sym;
dynamic[dp[th]][1][th] = val;
dp[th]++;
if (dp[th] >= DYNSIZE)
error(VARIABLE_OVERF, "add_dyn_env", NIL, th);
return (T);
}
/*
* environment is association list
* env = ((sym1 . val1) (sym2 . val2) ...)
* find value with assq
* when not find return FAILSE
*/
int find_env(int sym, int th)
{
int addr;
addr = assq(sym, ep[th]);
if (addr == FAILSE)
return (FAILSE);
else
return (cdr(addr));
}
/* find in dynamic environment */
int find_dyn(int sym, int th)
{
int i;
for (i = dp[th] - 1; i >= 0; i--) {
if (dynamic[i][0][th] == sym)
return (dynamic[i][1][th]);
}
return (FAILSE);
}
/* find tag in tag environment
* catch_data structure
* [tag_addr,ep,unwind_nest]
* if find tag, return the index else return FAILSE
*/
int find_tag(int tag)
{
int i;
for (i = cp; i >= 0; i--) {
if (catch_data[i][0] == tag)
return (i);
}
return (FAILSE);
}
/* bind to association list destructively */
void set_val(int sym, int val, int ls)
{
int addr;
addr = assq(sym, ls);
if (addr != FAILSE)
SET_CDR(addr, val);
}
/* for uniqueness of symbol */
int get_sym(const char *name, int index)
{
int addr;
addr = cell_hash_table[index];
while (addr != NIL) {
if (strcmp(name, GET_NAME(car(addr))) == 0)
return (car(addr));
else
addr = cdr(addr);
}
return (-1);
}
/*
* link list is generated in hheap area allways
*/
int add_sym(const char *name, int index)
{
int addr, res;
addr = cell_hash_table[index];
addr = cons(res = make_sym1(name), addr);
pthread_mutex_lock(&mutex);
cell_hash_table[index] = addr;
pthread_mutex_unlock(&mutex);
return (res);
}
/*
* symbol car = function addr cdr = global value aux = class symbol option
* = CONSTN(constant )
*/
int make_sym1(const char *pname)
{
int addr;
addr = freshcell();
SET_TAG(addr, SYM);
TRY heap[addr].name = Str_dup(pname, 1, 0, 1);
EXCEPT(Mem_Failed) error(MALLOC_OVERF, "make_sym", NIL, 0);
END_TRY;
SET_CAR(addr, NIL);
SET_CDR(addr, NIL);
SET_AUX(addr, csymbol); // class symbol
return (addr);
}
/* calculate hash number
* modulo sum of each charactor's ASCII code with
* HASHTBSIZE(107)
*/
int hash(const char *name)
{
int res;
res = 0;
while (*name != NUL) {
res = res + (int) *name;
name++;
}
return (res % HASHTBSIZE);
}
/*
* make_ generate cell for data structures
* make_int make integer
* make_long make long integer
* make_flt make float number
* make_sym make symbol
* make_func make function (lambda)
* make_generic make generic function
* make_generic_star make generic function
* make_method make method for generic function
* make_vec make vector
* make_arr maker array
* make_stm make stream
* make_str make string
* make_char make character
* make_class make class
* make_instance make instance
* make_dummy make dummy
* make_big make bignum (bignum.c)
*/
/*
* integer is immediate
* positive integer, set 1 second bit from MSB.
* negative integer is only negative.
* integer is out of cell address. so, integer does not require cell.
*/
int make_int(int intn)
{
if (intn >= 0)
return (INT_FLAG | intn);
else
return (intn);
}
int make_long(long long int lngnum)
{
int addr;
addr = freshcell();
SET_TAG(addr, LONGN);
SET_LONG(addr, lngnum);
SET_AUX(addr, clongnum); /* class longnum */
return (addr);
}
int make_flt(double floatn)
{
int addr;
addr = freshcell();
SET_TAG(addr, FLTN);
SET_FLT(addr, floatn);
SET_AUX(addr, cfloat); /* class float */
return (addr);
}
/*
* symbol car = function cdr = global value aux = class
*/
int make_sym(const char *pname)
{
int index, res;
index = hash(pname);
if ((res = get_sym(pname, index)) != -1)
return (res);
else
return (add_sym(pname, index));
}
/*
* function car = args&body cdr = environment aux = null func object is
* generated in heap area.
* note, if ep(environment) has bignum, convert to parmanent)
*/
int make_func(const char *pname, int addr)
{
int val;
val = freshcell();
SET_TAG(val, FUNC);
TRY heap[val].name = Str_dup(pname, 1, 0, 1);
EXCEPT(Mem_Failed) error(MALLOC_OVERF, "make_func", NIL, 0);
END_TRY;
SET_CAR(val, addr);
SET_CDR(val, ep[0]); /* local environment */
SET_AUX(val, cfunction); /* class function */
/* if lambda is generated in method, save the method and given argument */
if (generic_func != NIL)
SET_PROP(val, cons(next_method, generic_vars)); /* method of generic-function and argument */
SET_OPT(val, count_args(car(addr))); /* amount of argument */
return (val);
}
/* amount of argument. if it has :rest or &rest, it is minus number */
int count_args(int ls)
{
int ls1, n, res;
ls1 = reverse(ls);
n = length(ls);
if (eqp(cadr(ls1), make_sym(":REST")))
res = -1 * n;
else if (eqp(cadr(ls1), make_sym("&REST")))
res = -1 * n;
else
res = n;
return (res);
}
/*
* ILOS generic function
* generic car = args cdr = method aux = class
*/
int make_generic(char *pname, int lamlist, int body)
{
int val;
val = freshcell();
SET_TAG(val, GENERIC);
TRY heap[val].name = Str_dup(pname, 1, 0, 1);
EXCEPT(Mem_Failed) error(MALLOC_OVERF, "make_generic", NIL, 0);
END_TRY;
SET_CAR(val, lamlist);
SET_OPT(val, count_args(lamlist)); /* amount of argument */
SET_CDR(val, NIL);
SET_PROP(val, T); /* method-combination default is T */
SET_AUX(val, cstandard_generic_function);
if (illegal_lambda_p(lamlist))
error(ILLEGAL_ARGS, "make_generic", lamlist, 0);
while (!nullp(body)) {
/* (:method method-qualifier* parameter-profile form*) */
if (eqp(caar(body), make_sym(":METHOD"))) {
if (method_qualifier_p(cadar(body)) && GET_PROP(val) == NIL) {
error(ILLEGAL_FORM, "defgeneric", body, 0);
}
if (symbolp(cadar(body)) && !method_qualifier_p(cadar(body))) {
error(ILLEGAL_FORM, "defgeneric", body, 0);
}
if (listp(cadar(body)) && undef_parameter_p(cadar(body))) {
error(UNDEF_ENTITY, "defgeneric", body, 0);
}
if (listp(cadar(body))
&& !unified_parameter_p(lamlist, cadar(body))) {
error(ILLEGAL_FORM, "defgeneric", body, 0);
}
if (nullp(cadar(body))) {
error(ILLEGAL_FORM, "defgeneric", body, 0);
}
insert_method(make_method(cdar(body)), val);
} else if (eqp(caar(body), make_sym(":METHOD-COMBINATION"))) {
if (cadar(body) == NIL || cadar(body) == T)
SET_PROP(val, cadar(body));
else
error(ILLEGAL_FORM, "defgeneric", body, 0);
} else if (eqp(caar(body), make_sym(":GENERIC-FUNCTION-CLASS"))) {
if (!(listp(cadar(body))
&& eqp(car(cadar(body)), make_sym("CLASS")))) {
error(ILLEGAL_FORM, "defgeneric", body, 0);
}
SET_AUX(val, eval(cadar(body), 0));
} else {
error(ILLEGAL_FORM, "defgeneric", body, 0);
}
body = cdr(body);
}
return (val);
}
/*
* diffrence is class. the class is generic-function use in defgeneric*
*/
int make_generic_star(int lamlist, int body)
{
int val;
val = freshcell();
SET_TAG(val, GENERIC);
SET_CAR(val, lamlist);
SET_OPT(val, count_args(lamlist)); /* amount of argument */
SET_CDR(val, NIL);
SET_PROP(val, T); /* method-combination default is T */
SET_AUX(val, cgeneric_function); /* difference. only this. */
while (!nullp(body)) {
if (eqp(caar(body), make_sym(":METHOD")))
insert_method(make_method(cdar(body)), val);
body = cdr(body);
}
return (val);
}
/*
* method car = args&body cdr = environment aux = null opt = priority
*/
int make_method(int addr)
{
int val;
val = freshcell();
SET_TAG(val, METHOD);
if (eqp(car(addr), make_sym(":AROUND"))) {
SET_CAR(val, cdr(addr));
SET_OPT(val, AROUND);
} else if (eqp(car(addr), make_sym(":BEFORE"))) {
SET_CAR(val, cdr(addr));
SET_OPT(val, BEFORE);
} else if (eqp(car(addr), make_sym(":AFTER"))) {
SET_CAR(val, cdr(addr));
SET_OPT(val, AFTER);
} else {
SET_CAR(val, addr);
SET_OPT(val, PRIMARY);
}
SET_CDR(val, ep[0]);
SET_AUX(val, NIL);
return (val);
}
/* vector */
int make_vec(int n, int obj)
{
int res, i, *vec;
res = freshcell();
TRY vec = (int *) ALLOC(sizeof(int) * n);
EXCEPT(Mem_Failed) error(MALLOC_OVERF, "make_vector", NIL, 0);
END_TRY;
SET_TAG(res, VEC);
SET_VEC(res, vec);
for (i = 0; i < n; i++)
SET_VEC_ELT(res, i, copy(obj));
SET_CDR(res, n);
SET_AUX(res, cgeneral_vector); /* class general-vector */
return (res);
}
int vector(int lis)
{
int len, i, res;
len = length(lis);
i = 0;
res = make_vec(len, UNDEF);
while (!nullp(lis)) {
vector_set(res, i, car(lis));
i++;
lis = cdr(lis);
}
return (res);
}
/*
* stream data structure
* <OPT part>
* EISL_INPUT input-stream text-mode
* EISL_OUTPUT output-stream text-mode
* EISL_INOUT io-stream text-mode
* EISL_INPUT_BIN input-stream binary-mode
* EISL_OUTPUT_BIN output-stream binary-mode
* EISL_INOUT_BIN io-stream binary-mode
* EISL_INSTR input-stream string-stream
* EISL_OUTSTR output-stream string-stream
* <PROF part>
* EISL_OPEN stream state is open
* EISL_CLOSE stream state is close
*/
int make_stm(FILE * port, int type, const char *name)
{
int addr;
addr = freshcell();
SET_TAG(addr, STREAM);
SET_PORT(addr, port); /* port for file stream */
SET_CDR(addr, 0); /* string-stream-position */
SET_AUX(addr, cstream); /* class */
SET_OPT(addr, type); /* EISL_INPUT/EISL_OUTPUT/EISL_INOUT/EISL_INSTR/EISL_OUTSTR/
* EISL_INPUT_BIN/EISL_OUTPUT_BIN/EISL_INOUT_BIN/EISL_INSOCKET/EISL_OUTSOCKET */
SET_NAME(addr, name);
SET_PROP(addr, 0); /* output-string-stream charcount from */
SET_PROF(addr, EISL_OPEN); /* EISL_OPEN/EISL_CLOSE initial value is EISL_OPEN */
return (addr);
}
int make_socket(int sockfd, int type, const char *name, int listenfd)
{
int addr;
addr = freshcell();
SET_TAG(addr, STREAM);
SET_SOCKET(addr, sockfd); /* socket fd */
SET_CDR(addr, listenfd); /* socket when linten */
SET_AUX(addr, cstream); /* class */
SET_OPT(addr, type); /* EISL_SOCKET */
SET_NAME(addr, name); /* ip address */
SET_PROF(addr, EISL_OPEN); /* EISL_OPEN/EISL_CLOSE initial value is EISL_OPEN */
return (addr);
}
// --------array-------
int make_arr(int ls, int obj)
{
int size, res, i, ls1, *vec;
ls1 = ls;
if (!nullp(ls)) {
size = 1;
while (!nullp(ls)) {
int n;
n = GET_INT(car(ls));
if (n == 0)
n = 1;
size = n * size;
ls = cdr(ls);
}
size++;
} else
size = 1;
res = freshcell();
TRY vec = (int *) ALLOC(sizeof(int) * size);
EXCEPT(Mem_Failed) error(MALLOC_OVERF, "array", NIL, 0);
END_TRY;
if (nullp(ls1)) {
SET_TAG(res, ARR);
SET_CDR(res, ls1);
SET_AUX(res, cgeneral_array_star); /* class */
} else if (length(ls1) == 1) {
SET_TAG(res, VEC);
SET_CDR(res, GET_INT(car(ls1)));
SET_AUX(res, cgeneral_vector);
} else {
SET_TAG(res, ARR);
SET_CDR(res, ls1);
SET_AUX(res, cgeneral_array_star); /* class */
}
SET_VEC(res, vec);
for (i = 0; i < size; i++)
SET_VEC_ELT(res, i, copy(obj));
return (res);
}
int make_str(const char *string)
{
int addr;
addr = freshcell();
SET_TAG(addr, STR);
TRY heap[addr].name = Str_dup(string, 1, 0, 1);
EXCEPT(Mem_Failed) error(MALLOC_OVERF, "make_str", NIL, 0);
END_TRY;
SET_AUX(addr, cstring); /* class string */
return (addr);
}
int make_char(const char *pname)
{
int addr, pos;
char low_name[SYMSIZE], char_entity;
pos = 0;
while (pname[pos] != NUL) {
low_name[pos] = tolower(pname[pos]);
pos++;
}
low_name[pos] = NUL;
char_entity = pname[0];
if (strcmp(low_name, "alarm") == 0) {
char_entity = BEL;
} else if (strcmp(low_name, "backspace") == 0) {
char_entity = BS;
} else if (strcmp(low_name, "delete") == 0) {
char_entity = DEL;
} else if (strcmp(low_name, "escape") == 0) {
char_entity = ESC;
} else if (strcmp(low_name, "return") == 0) {
char_entity = RET;
} else if (strcmp(low_name, "newline") == 0) {
char_entity = EOL;
} else if (strcmp(low_name, "null") == 0) {
char_entity = NUL;
} else if (strcmp(low_name, "space") == 0) {
char_entity = SPACE;
} else if (strcmp(low_name, "tab") == 0) {
char_entity = TAB;
} else if (strcmp(low_name, "^a") == 0) {
char_entity = 1;
} else if (strcmp(low_name, "^b") == 0) {
char_entity = 2;
} else if (strcmp(low_name, "^c") == 0) {
char_entity = 3;
} else if (strcmp(low_name, "^d") == 0) {
char_entity = 4;
} else if (strcmp(low_name, "^e") == 0) {
char_entity = 5;
} else if (strcmp(low_name, "^f") == 0) {
char_entity = 6;
} else if (strcmp(low_name, "^k") == 0) {
char_entity = 11;
} else if (strcmp(low_name, "^l") == 0) {
char_entity = 12;
} else if (strcmp(low_name, "^n") == 0) {
char_entity = 14;
} else if (strcmp(low_name, "^o") == 0) {
char_entity = 15;
} else if (strcmp(low_name, "^p") == 0) {
char_entity = 16;
} else if (strcmp(low_name, "^q") == 0) {
char_entity = 17;
} else if (strcmp(low_name, "^r") == 0) {
char_entity = 18;
} else if (strcmp(low_name, "^s") == 0) {
char_entity = 19;
} else if (strcmp(low_name, "^t") == 0) {
char_entity = 20;
} else if (strcmp(low_name, "^u") == 0) {
char_entity = 21;
} else if (strcmp(low_name, "^v") == 0) {
char_entity = 22;
} else if (strcmp(low_name, "^w") == 0) {
char_entity = 23;
} else if (strcmp(low_name, "^x") == 0) {
char_entity = 24;
} else if (strcmp(low_name, "^y") == 0) {
char_entity = 25;
} else if (strcmp(low_name, "^z") == 0) {
char_entity = 26;
}
addr = freshcell();
SET_TAG(addr, CHR);
TRY heap[addr].name = (char *) ALLOC(CHARSIZE);
EXCEPT(Mem_Failed) error(MALLOC_OVERF, "make_char", NIL, 0);
END_TRY;
if (!isUni2(pname[0]) && !isUni3(pname[0]) && !isUni4(pname[0])
&& !isUni5(pname[0]) && !isUni6(pname[0])) {
heap[addr].name[0] = char_entity;
heap[addr].name[1] = NUL;
} else {
pos = 0;
while (pname[pos] != NUL) {
heap[addr].name[pos] = pname[pos];
pos++;
}
heap[addr].name[pos] = NUL;
}
SET_AUX(addr, ccharacter);
return (addr);
}
/*
* class obj car = super class cdr = class variable aux = method name =
* class name
*/
int make_class(const char *pname, int superclass)
{
int addr;
addr = freshcell();
SET_TAG(addr, CLASS);
TRY heap[addr].name = Str_dup(pname, 1, 0, 1);
EXCEPT(Mem_Failed) error(MALLOC_OVERF, "make_class", NIL, 0);
END_TRY;
SET_CAR(addr, superclass);
SET_CDR(addr, NIL);
SET_AUX(addr, NIL);
return (addr);
}
/*
* initls ((format-string a)(format-argments b))...(initarg var) )
*/
int make_instance(int cl, int initls)
{
int addr;
addr = freshcell();
SET_TAG(addr, INSTANCE);
SET_CAR(addr, GET_CAR(cl)); /* super class */
SET_CDR(addr, slotvars(cl)); /* slot vars with super class */
SET_AUX(addr, cl); /* class of instance */
SET_OPT(addr, initls);
while (!nullp(initls)) {
set_val(cdr(assq(car(initls), GET_AUX(cl))), cadr(initls),
GET_CDR(addr));
initls = cddr(initls);
}
return (addr);
}
int slotvars(int x)
{
if (nullp(x))
return (NIL);
else if (atomp(x) && nullp(GET_CAR(x)))
return (copy(GET_CDR(x)));
else if (atomp(x) && atomp(GET_CAR(x)))
return (append(copy(GET_CDR(x)), copy(GET_CDR(GET_CAR(x)))));
else if (atomp(x) && listp(GET_CAR(x)))
return (append(copy(GET_CDR(x)), slotvars(GET_CAR(x))));
else
return (append(slotvars(GET_AUX(car(x))), slotvars(cdr(x))));
}
/* initialize instance
* x is class-instance
* initls is list for initialize value
*/
int initinst(int x, int initls)
{
int cl, class_vars, inst_vars, initargs, n, temp;
cl = GET_AUX(x); /* class of x */
class_vars = GET_CDR(cl); /* class variable list.
This is assoc list ((initarg1 . accessor1)(initarg2 . accesor2)...) */
inst_vars = GET_CDR(x); /* instance variable list.
This is assoc list ((accessor1 . val1)(accessor2 . val2) ...) */
initargs = GET_AUX(cl); /* list to set (initarg1 val1 initarg2 val2 ...) */
while (!nullp(class_vars)) {
if ((n = assq(caar(class_vars), inst_vars)) != FAILSE)
SET_CDR(n, copy(cdar(class_vars)));
class_vars = cdr(class_vars);
}
temp = initls;