struct pic_lib *
pic_make_library(pic_state *pic, pic_value name)
{
struct pic_lib *lib;
struct pic_senv *senv;
if ((lib = pic_find_library(pic, name)) != NULL) {
#if DEBUG
printf("* reopen library: ");
pic_debug(pic, name);
puts("");
#endif
return lib;
}
senv = pic_null_syntactic_environment(pic);
lib = (struct pic_lib *)pic_obj_alloc(pic, sizeof(struct pic_lib), PIC_TT_LIB);
lib->senv = senv;
lib->name = name;
xh_init_int(&lib->exports, sizeof(pic_sym));
/* register! */
pic->lib_tbl = pic_acons(pic, name, pic_obj_value(lib), pic->lib_tbl);
return lib;
}
pic_state *
pic_open(int argc, char *argv[], char **envp)
{
struct pic_port *pic_make_standard_port(pic_state *, xFILE *, short);
char t;
pic_state *pic;
size_t ai;
pic = malloc(sizeof(pic_state));
/* turn off GC */
pic->gc_enable = false;
/* root block */
pic->wind = NULL;
/* command line */
pic->argc = argc;
pic->argv = argv;
pic->envp = envp;
/* prepare VM stack */
pic->stbase = pic->sp = calloc(PIC_STACK_SIZE, sizeof(pic_value));
pic->stend = pic->stbase + PIC_STACK_SIZE;
/* callinfo */
pic->cibase = pic->ci = calloc(PIC_STACK_SIZE, sizeof(pic_callinfo));
pic->ciend = pic->cibase + PIC_STACK_SIZE;
/* exception handler */
pic->xpbase = pic->xp = calloc(PIC_RESCUE_SIZE, sizeof(struct pic_proc *));
pic->xpend = pic->xpbase + PIC_RESCUE_SIZE;
/* memory heap */
pic->heap = pic_heap_open();
/* symbol table */
xh_init_str(&pic->syms, sizeof(pic_sym *));
/* global variables */
pic->globals = NULL;
/* macros */
pic->macros = NULL;
/* attributes */
xh_init_ptr(&pic->attrs, sizeof(struct pic_dict *));
/* features */
pic->features = pic_nil_value();
/* libraries */
pic->libs = pic_nil_value();
pic->lib = NULL;
/* GC arena */
pic->arena = calloc(PIC_ARENA_SIZE, sizeof(struct pic_object **));
pic->arena_size = PIC_ARENA_SIZE;
pic->arena_idx = 0;
/* raised error object */
pic->err = pic_undef_value();
/* standard ports */
pic->xSTDIN = NULL;
pic->xSTDOUT = NULL;
pic->xSTDERR = NULL;
/* native stack marker */
pic->native_stack_start = &t;
ai = pic_gc_arena_preserve(pic);
#define S(slot,name) pic->slot = pic_intern_cstr(pic, name);
S(sDEFINE, "define");
S(sLAMBDA, "lambda");
S(sIF, "if");
S(sBEGIN, "begin");
S(sSETBANG, "set!");
S(sQUOTE, "quote");
S(sQUASIQUOTE, "quasiquote");
S(sUNQUOTE, "unquote");
S(sUNQUOTE_SPLICING, "unquote-splicing");
S(sDEFINE_SYNTAX, "define-syntax");
S(sIMPORT, "import");
S(sEXPORT, "export");
S(sDEFINE_LIBRARY, "define-library");
S(sIN_LIBRARY, "in-library");
S(sCOND_EXPAND, "cond-expand");
S(sAND, "and");
S(sOR, "or");
S(sELSE, "else");
S(sLIBRARY, "library");
S(sONLY, "only");
S(sRENAME, "rename");
S(sPREFIX, "prefix");
S(sEXCEPT, "except");
S(sCONS, "cons");
S(sCAR, "car");
S(sCDR, "cdr");
S(sNILP, "null?");
S(sSYMBOLP, "symbol?");
S(sPAIRP, "pair?");
S(sADD, "+");
S(sSUB, "-");
S(sMUL, "*");
S(sDIV, "/");
S(sMINUS, "minus");
S(sEQ, "=");
S(sLT, "<");
S(sLE, "<=");
S(sGT, ">");
S(sGE, ">=");
S(sNOT, "not");
S(sREAD, "read");
S(sFILE, "file");
S(sCALL, "call");
S(sTAILCALL, "tail-call");
S(sGREF, "gref");
S(sLREF, "lref");
S(sCREF, "cref");
S(sRETURN, "return");
S(sCALL_WITH_VALUES, "call-with-values");
S(sTAILCALL_WITH_VALUES, "tailcall-with-values");
pic_gc_arena_restore(pic, ai);
#define R(slot,name) pic->slot = pic_gensym(pic, pic_intern_cstr(pic, name));
R(rDEFINE, "define");
R(rLAMBDA, "lambda");
R(rIF, "if");
R(rBEGIN, "begin");
R(rSETBANG, "set!");
R(rQUOTE, "quote");
R(rDEFINE_SYNTAX, "define-syntax");
R(rIMPORT, "import");
R(rEXPORT, "export");
R(rDEFINE_LIBRARY, "define-library");
R(rIN_LIBRARY, "in-library");
R(rCOND_EXPAND, "cond-expand");
pic_gc_arena_restore(pic, ai);
/* root tables */
pic->globals = pic_make_dict(pic);
pic->macros = pic_make_dict(pic);
/* root block */
pic->wind = pic_alloc(pic, sizeof(struct pic_winder));
pic->wind->prev = NULL;
pic->wind->depth = 0;
pic->wind->in = pic->wind->out = NULL;
/* reader */
pic->reader = malloc(sizeof(struct pic_reader));
pic->reader->typecase = PIC_CASE_DEFAULT;
pic->reader->trie = pic_make_trie(pic);
xh_init_int(&pic->reader->labels, sizeof(pic_value));
/* init readers */
pic_init_reader(pic);
/* standard libraries */
pic->PICRIN_BASE = pic_open_library(pic, pic_read_cstr(pic, "(picrin base)"));
pic->PICRIN_USER = pic_open_library(pic, pic_read_cstr(pic, "(picrin user)"));
pic->lib = pic->PICRIN_USER;
/* standard I/O */
pic->xSTDIN = pic_make_standard_port(pic, xstdin, PIC_PORT_IN);
pic->xSTDOUT = pic_make_standard_port(pic, xstdout, PIC_PORT_OUT);
pic->xSTDERR = pic_make_standard_port(pic, xstderr, PIC_PORT_OUT);
pic_gc_arena_restore(pic, ai);
/* turn on GC */
pic->gc_enable = true;
pic_init_core(pic);
return pic;
}
