picrin/state.c

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6.0 KiB
C
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/**
* See Copyright Notice in picrin.h
*/
#include <stdlib.h>
#include "picrin.h"
#include "picrin/gc.h"
#include "picrin/read.h"
#include "picrin/proc.h"
#include "picrin/macro.h"
#include "picrin/cont.h"
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#include "picrin/port.h"
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#include "picrin/error.h"
void pic_init_core(pic_state *);
pic_state *
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pic_open(int argc, char *argv[], char **envp)
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{
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struct pic_port *pic_port_make_stdport(pic_state *, xFILE *, short);
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char t;
pic_state *pic;
size_t ai;
pic = malloc(sizeof(pic_state));
/* root block */
pic->blk = 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;
/* memory heap */
pic->heap = pic_heap_open();
/* symbol table */
xh_init_str(&pic->syms, sizeof(pic_sym));
xh_init_int(&pic->sym_names, sizeof(const char *));
pic->sym_cnt = 0;
pic->uniq_sym_cnt = 0;
/* global variables */
xh_init_int(&pic->globals, sizeof(pic_value));
/* macros */
xh_init_int(&pic->macros, sizeof(struct pic_macro *));
/* libraries */
pic->libs = pic_nil_value();
pic->lib = NULL;
/* reader */
pic->reader = malloc(sizeof(struct pic_reader));
pic->reader->typecase = PIC_CASE_DEFAULT;
pic->reader->trie = pic_trie_new(pic);
xh_init_int(&pic->reader->labels, sizeof(pic_value));
/* error handling */
pic->jmp = NULL;
pic->err = NULL;
pic->try_jmps = calloc(PIC_RESCUE_SIZE, sizeof(struct pic_jmpbuf));
pic->try_jmp_idx = 0;
pic->try_jmp_size = PIC_RESCUE_SIZE;
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/* standard ports */
pic->xSTDIN = NULL;
pic->xSTDOUT = NULL;
pic->xSTDERR = NULL;
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/* GC arena */
pic->arena = calloc(PIC_ARENA_SIZE, sizeof(struct pic_object **));
pic->arena_size = PIC_ARENA_SIZE;
pic->arena_idx = 0;
/* native stack marker */
pic->native_stack_start = &t;
#define register_core_symbol(pic,slot,name) do { \
pic->slot = pic_intern_cstr(pic, name); \
} while (0)
ai = pic_gc_arena_preserve(pic);
register_core_symbol(pic, sDEFINE, "define");
register_core_symbol(pic, sLAMBDA, "lambda");
register_core_symbol(pic, sIF, "if");
register_core_symbol(pic, sBEGIN, "begin");
register_core_symbol(pic, sSETBANG, "set!");
register_core_symbol(pic, sQUOTE, "quote");
register_core_symbol(pic, sQUASIQUOTE, "quasiquote");
register_core_symbol(pic, sUNQUOTE, "unquote");
register_core_symbol(pic, sUNQUOTE_SPLICING, "unquote-splicing");
register_core_symbol(pic, sDEFINE_SYNTAX, "define-syntax");
register_core_symbol(pic, sIMPORT, "import");
register_core_symbol(pic, sEXPORT, "export");
register_core_symbol(pic, sDEFINE_LIBRARY, "define-library");
register_core_symbol(pic, sIN_LIBRARY, "in-library");
register_core_symbol(pic, sCONS, "cons");
register_core_symbol(pic, sCAR, "car");
register_core_symbol(pic, sCDR, "cdr");
register_core_symbol(pic, sNILP, "null?");
register_core_symbol(pic, sADD, "+");
register_core_symbol(pic, sSUB, "-");
register_core_symbol(pic, sMUL, "*");
register_core_symbol(pic, sDIV, "/");
register_core_symbol(pic, sMINUS, "minus");
register_core_symbol(pic, sEQ, "=");
register_core_symbol(pic, sLT, "<");
register_core_symbol(pic, sLE, "<=");
register_core_symbol(pic, sGT, ">");
register_core_symbol(pic, sGE, ">=");
register_core_symbol(pic, sNOT, "not");
pic_gc_arena_restore(pic, ai);
#define register_renamed_symbol(pic,slot,name) do { \
pic->slot = pic_gensym(pic, pic_intern_cstr(pic, name)); \
} while (0)
ai = pic_gc_arena_preserve(pic);
register_renamed_symbol(pic, rDEFINE, "define");
register_renamed_symbol(pic, rLAMBDA, "lambda");
register_renamed_symbol(pic, rIF, "if");
register_renamed_symbol(pic, rBEGIN, "begin");
register_renamed_symbol(pic, rSETBANG, "set!");
register_renamed_symbol(pic, rQUOTE, "quote");
register_renamed_symbol(pic, rDEFINE_SYNTAX, "define-syntax");
register_renamed_symbol(pic, rIMPORT, "import");
register_renamed_symbol(pic, rEXPORT, "export");
register_renamed_symbol(pic, rDEFINE_LIBRARY, "define-library");
register_renamed_symbol(pic, rIN_LIBRARY, "in-library");
pic_gc_arena_restore(pic, ai);
/* root block */
pic->blk = (struct pic_block *)pic_obj_alloc(pic, sizeof(struct pic_block), PIC_TT_BLK);
pic->blk->prev = NULL;
pic->blk->depth = 0;
pic->blk->in = pic->blk->out = NULL;
/* init readers */
pic_init_reader(pic);
/* standard libraries */
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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;
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/* standard I/O */
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pic->xSTDIN = pic_port_make_stdport(pic, xstdin, PIC_PORT_IN);
pic->xSTDOUT = pic_port_make_stdport(pic, xstdout, PIC_PORT_OUT);
pic->xSTDERR = pic_port_make_stdport(pic, xstderr, PIC_PORT_OUT);
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pic_init_core(pic);
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return pic;
}
void
pic_close(pic_state *pic)
{
xh_iter it;
/* invoke exit handlers */
while (pic->blk) {
if (pic->blk->out) {
pic_apply0(pic, pic->blk->out);
}
pic->blk = pic->blk->prev;
}
/* clear out root objects */
pic->sp = pic->stbase;
pic->ci = pic->cibase;
pic->arena_idx = 0;
pic->err = NULL;
xh_clear(&pic->macros);
pic->libs = pic_nil_value();
/* free all heap objects */
pic_gc_run(pic);
/* free heaps */
pic_heap_close(pic->heap);
/* free runtime context */
free(pic->stbase);
free(pic->cibase);
/* free reader struct */
xh_destroy(&pic->reader->labels);
pic_trie_delete(pic, pic->reader->trie);
free(pic->reader);
/* free global stacks */
free(pic->try_jmps);
xh_destroy(&pic->syms);
xh_destroy(&pic->globals);
xh_destroy(&pic->macros);
/* free GC arena */
free(pic->arena);
/* free symbol names */
xh_begin(&it, &pic->sym_names);
while (xh_next(&it)) {
free(xh_val(it.e, char *));
}
xh_destroy(&pic->sym_names);
free(pic);
}