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cdump.c
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cdump.c
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/*
** cdump.c - mruby binary dumper (C source format)
**
** See Copyright Notice in mruby.h
*/
#include "mruby/cdump.h"
#include <string.h>
#include "mruby/irep.h"
#include "mruby/string.h"
#define MRB_CDUMP_LINE_LEN 128
#define SOURCE_CODE(fmt, ...) fprintf(f, fmt"\n", __VA_ARGS__)
#define SOURCE_CODE0(str) do {fputs(str, f); putc('\n', f);} while (0)
static int
make_cdump_isec(mrb_state *mrb, int irep_no, FILE *f)
{
int i;
mrb_irep *irep = mrb->irep[irep_no];
if (irep == 0)
return -1;
/* dump isec struct*/
if (irep->ilen > 0) {
SOURCE_CODE ("static mrb_code iseq_%d[] = {", irep_no);
for (i=0; i<irep->ilen; i++)
SOURCE_CODE(" 0x%08x," , irep->iseq[i]);
SOURCE_CODE0 ("};");
SOURCE_CODE0 ("");
}
return 0;
}
static size_t
str_format_len(mrb_value str)
{
size_t dump_len = 0;
char *src;
for (src = RSTRING_PTR(str); src < RSTRING_END(str); src++) {
switch (*src) {
case 0x07:/* BEL */ /* fall through */
case 0x08:/* BS */ /* fall through */
case 0x09:/* HT */ /* fall through */
case 0x0A:/* LF */ /* fall through */
case 0x0B:/* VT */ /* fall through */
case 0x0C:/* FF */ /* fall through */
case 0x0D:/* CR */ /* fall through */
case 0x22:/* " */ /* fall through */
case 0x27:/* ' */ /* fall through */
case 0x3F:/* ? */ /* fall through */
case 0x5C:/* \ */ /* fall through */
dump_len += 2;
break;
default:
dump_len++;
break;
}
}
return dump_len;
}
static char*
str_to_format(mrb_value str, char *buf)
{
char *src;
char *dst;
for (src = RSTRING_PTR(str), dst = buf; src < RSTRING_END(str); src++) {
switch (*src) {
case 0x07:/* BEL */ *dst++ = '\\'; *dst++ = 'a'; break;
case 0x08:/* BS */ *dst++ = '\\'; *dst++ = 'b'; break;
case 0x09:/* HT */ *dst++ = '\\'; *dst++ = 't'; break;
case 0x0A:/* LF */ *dst++ = '\\'; *dst++ = 'n'; break;
case 0x0B:/* VT */ *dst++ = '\\'; *dst++ = 'v'; break;
case 0x0C:/* FF */ *dst++ = '\\'; *dst++ = 'f'; break;
case 0x0D:/* CR */ *dst++ = '\\'; *dst++ = 'r'; break;
case 0x22:/* " */ *dst++ = '\\'; *dst++ = '\"'; break;
case 0x27:/* ' */ *dst++ = '\\'; *dst++ = '\''; break;
case 0x3F:/* ? */ *dst++ = '\\'; *dst++ = '\?'; break;
case 0x5C:/* \ */ *dst++ = '\\'; *dst++ = '\\'; break;
default: *dst++ = *src; break;
}
}
return buf;
}
int
make_cdump_irep(mrb_state *mrb, int irep_no, FILE *f)
{
mrb_irep *irep = mrb->irep[irep_no];
int n;
char *buf = 0;
size_t buf_len, str_len;
if (irep == 0)
return -1;
buf_len = MRB_CDUMP_LINE_LEN;
if ((buf = (char *)mrb_malloc(mrb, buf_len)) == 0 ) {
return MRB_CDUMP_GENERAL_FAILURE;
}
SOURCE_CODE0 (" ai = mrb->arena_idx;");
SOURCE_CODE0 (" irep = mrb->irep[idx] = mrb_malloc(mrb, sizeof(mrb_irep));");
SOURCE_CODE0 (" irep->idx = idx++;");
SOURCE_CODE (" irep->nlocals = %d;", irep->nlocals);
SOURCE_CODE (" irep->nregs = %d;", irep->nregs);
SOURCE_CODE (" irep->ilen = %d;", irep->ilen);
SOURCE_CODE (" irep->iseq = iseq_%d;", irep_no);
SOURCE_CODE (" irep->slen = %d;", irep->slen);
if(irep->slen > 0) {
SOURCE_CODE (" irep->syms = mrb_malloc(mrb, sizeof(mrb_sym)*%d);", irep->slen);
for (n=0; n<irep->slen; n++)
if (irep->syms[n]) {
SOURCE_CODE (" irep->syms[%d] = mrb_intern(mrb, \"%s\");", n, mrb_sym2name(mrb, irep->syms[n]));
}
}
else
SOURCE_CODE0 (" irep->syms = NULL;");
SOURCE_CODE (" irep->plen = %d;", irep->plen);
if(irep->plen > 0) {
SOURCE_CODE (" irep->pool = mrb_malloc(mrb, sizeof(mrb_value)*%d);", irep->plen);
for (n=0; n<irep->plen; n++) {
switch (mrb_type(irep->pool[n])) {
case MRB_TT_FLOAT:
SOURCE_CODE(" irep->pool[%d] = mrb_float_value(%.16e);", n, mrb_float(irep->pool[n])); break;
case MRB_TT_FIXNUM:
SOURCE_CODE(" irep->pool[%d] = mrb_fixnum_value(%d);", n, mrb_fixnum(irep->pool[n])); break;
case MRB_TT_STRING:
str_len = str_format_len(irep->pool[n]) + 1;
if ( str_len > buf_len ) {
buf_len = str_len;
if ((buf = (char *)mrb_realloc(mrb, buf, buf_len)) == 0 ) {
return MRB_CDUMP_GENERAL_FAILURE;
}
}
memset(buf, 0, buf_len);
SOURCE_CODE(" irep->pool[%d] = mrb_str_new(mrb, \"%s\", %d);", n, str_to_format(irep->pool[n], buf), RSTRING_LEN(irep->pool[n])); break;
/* TODO MRB_TT_REGEX */
default: break;
}
}
}
else
SOURCE_CODE0 (" irep->pool = NULL;");
SOURCE_CODE0 (" mrb->irep_len = idx;");
SOURCE_CODE0 (" mrb->arena_idx = ai;");
SOURCE_CODE0("");
return MRB_CDUMP_OK;
}
int
mrb_cdump_irep(mrb_state *mrb, int n, FILE *f,const char *initname)
{
int irep_no, irep_num;
if (mrb == 0 || n < 0 || n >= mrb->irep_len || f == 0 || initname == 0)
return -1;
irep_num = mrb->irep_len - n;
SOURCE_CODE0("#include \"mruby.h\"");
SOURCE_CODE0("#include \"mruby/irep.h\"");
SOURCE_CODE0("#include \"mruby/string.h\"");
SOURCE_CODE0("#include \"mruby/proc.h\"");
SOURCE_CODE0("");
for (irep_no=n; irep_no<mrb->irep_len; irep_no++) {
if (make_cdump_isec(mrb, irep_no, f) != 0)
return -1;
}
SOURCE_CODE0("void");
SOURCE_CODE ("%s(mrb_state *mrb)", initname);
SOURCE_CODE0("{");
SOURCE_CODE0(" int n = mrb->irep_len;");
SOURCE_CODE0(" int idx = n;");
SOURCE_CODE0(" int ai;");
SOURCE_CODE0(" mrb_irep *irep;");
SOURCE_CODE0("");
SOURCE_CODE (" mrb_add_irep(mrb, idx+%d);", irep_num);
SOURCE_CODE0("");
for (irep_no=n; irep_no<mrb->irep_len; irep_no++) {
if (make_cdump_irep(mrb, irep_no, f) != 0)
return -1;
}
SOURCE_CODE0(" mrb_run(mrb, mrb_proc_new(mrb, mrb->irep[n]), mrb_top_self(mrb));");
SOURCE_CODE0("}");
return 0;
}