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/*
* dump.c - save precompiled ktap chunks
*
* This file is part of ktap by Jovi Zhangwei.
*
* Copyright (C) 2012-2013 Jovi Zhangwei <jovi.zhangwei@gmail.com>.
*
* Copyright (C) 1994-2013 Lua.org, PUC-Rio.
* - The part of code in this file is copied from lua initially.
* - lua's MIT license is compatible with GPL.
*
* ktap is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* ktap is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../include/ktap_types.h"
#include "../include/ktap_opcodes.h"
#include "ktapc.h"
typedef struct {
ktap_writer writer;
void *data;
int strip;
int status;
} DumpState;
#define DumpMem(b, n, size, D) DumpBlock(b, (n)*(size), D)
#define DumpVar(x, D) DumpMem(&x, 1, sizeof(x), D)
static void DumpBlock(const void *b, size_t size, DumpState *D)
{
if (D->status == 0)
D->status = ((D->writer))(b, size, D->data);
}
static void DumpChar(int y, DumpState *D)
{
char x = (char)y;
DumpVar(x, D);
}
static void DumpInt(int x, DumpState *D)
{
DumpVar(x, D);
}
static void DumpNumber(ktap_number x, DumpState *D)
{
DumpVar(x,D);
}
static void DumpVector(const void *b, int n, size_t size, DumpState *D)
{
DumpInt(n, D);
DumpMem(b, n, size, D);
}
static void DumpString(const ktap_string *s, DumpState *D)
{
if (s == NULL) {
int size = 0;
DumpVar(size, D);
} else {
int size = s->tsv.len + 1; /* include trailing '\0' */
DumpVar(size, D);
DumpBlock(getstr(s), size * sizeof(char), D);
}
}
#define DumpCode(f, D) DumpVector(f->code, f->sizecode, sizeof(ktap_instruction), D)
static void DumpFunction(const ktap_proto *f, DumpState *D);
static void DumpConstants(const ktap_proto *f, DumpState *D)
{
int i, n = f->sizek;
DumpInt(n, D);
for (i = 0; i < n; i++) {
const ktap_value* o=&f->k[i];
DumpChar(ttypenv(o), D);
switch (ttypenv(o)) {
case KTAP_TNIL:
break;
case KTAP_TBOOLEAN:
DumpChar(bvalue(o), D);
break;
case KTAP_TNUMBER:
DumpNumber(nvalue(o), D);
break;
case KTAP_TSTRING:
DumpString(rawtsvalue(o), D);
break;
default:
printf("ktap: DumpConstants with unknown vaule type %d\n", ttypenv(o));
ktap_assert(0);
}
}
n = f->sizep;
DumpInt(n, D);
for (i = 0; i < n; i++)
DumpFunction(f->p[i], D);
}
static void DumpUpvalues(const ktap_proto *f, DumpState *D)
{
int i, n = f->sizeupvalues;
DumpInt(n, D);
for (i = 0; i < n; i++) {
DumpChar(f->upvalues[i].instack, D);
DumpChar(f->upvalues[i].idx, D);
}
}
static void DumpDebug(const ktap_proto *f, DumpState *D)
{
int i,n;
DumpString((D->strip) ? NULL : f->source, D);
n= (D->strip) ? 0 : f->sizelineinfo;
DumpVector(f->lineinfo, n, sizeof(int), D);
n = (D->strip) ? 0 : f->sizelocvars;
DumpInt(n, D);
for (i = 0; i < n; i++) {
DumpString(f->locvars[i].varname, D);
DumpInt(f->locvars[i].startpc, D);
DumpInt(f->locvars[i].endpc, D);
}
n = (D->strip) ? 0 : f->sizeupvalues;
DumpInt(n, D);
for (i = 0; i < n; i++)
DumpString(f->upvalues[i].name, D);
}
static void DumpFunction(const ktap_proto *f, DumpState *D)
{
DumpInt(f->linedefined, D);
DumpInt(f->lastlinedefined, D);
DumpChar(f->numparams, D);
DumpChar(f->is_vararg, D);
DumpChar(f->maxstacksize, D);
DumpCode(f, D);
DumpConstants(f, D);
DumpUpvalues(f, D);
DumpDebug(f, D);
}
static void DumpHeader(DumpState *D)
{
u8 h[KTAPC_HEADERSIZE];
kp_header(h);
DumpBlock(h, KTAPC_HEADERSIZE, D);
}
/*
* dump ktap function as precompiled chunk
*/
int ktapc_dump(const ktap_proto *f, ktap_writer w, void *data, int strip)
{
DumpState D;
D.writer = w;
D.data = data;
D.strip = strip;
D.status = 0;
DumpHeader(&D);
DumpFunction(f, &D);
return D.status;
}
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