gambas-source-code/main/gbc/gbc_trans_subr.c
Benoît Minisini 48d192b4c7 [COMPILER]
* BUG: Allows OPEN STRING to not specify any string.


git-svn-id: svn://localhost/gambas/trunk@5943 867c0c6c-44f3-4631-809d-bfa615b0a4ec
2013-11-04 20:12:24 +00:00

982 lines
16 KiB
C

/***************************************************************************
gbc_trans_subr.c
(c) 2000-2013 Benoît Minisini <gambas@users.sourceforge.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that 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 Street, Fifth Floor, Boston,
MA 02110-1301, USA.
***************************************************************************/
#define _TRANS_SUBR_C
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "gb_common.h"
#include "gb_error.h"
#include "gbc_compile.h"
#include "gbc_trans.h"
#include "gb_code.h"
#include "gb_limit.h"
/*#define DEBUG*/
typedef
struct {
char *name;
SUBR_INFO *info;
}
TRANS_SUBR_INFO;
static void trans_subr(int subr, int nparam)
{
static TRANS_SUBR_INFO subr_info[] =
{
{ ".Print" }, { ".Input" }, { ".Write" }, { ".WriteBytes" }, { ".Read" },
{ ".ReadBytes" }, { ".Open" }, { ".Close" }, { "Seek" }, { ".LineInput" },
{ ".Flush" }, { ".Exec" }, { ".Shell" }, { ".Wait" }, { ".Kill" },
{ ".Move" }, { ".Mkdir" }, { ".Rmdir" }, { ".Array" }, {".Collection" },
{ ".Copy" }, { ".Link" }, { ".Error" }, { ".Lock" }, { ".Unlock" },
{ ".InputFrom" }, { ".OutputTo" }, { ".Debug" }, { ".Sleep" }, { ".Randomize" },
{ ".ErrorTo" }, { "Left" }, { "Mid" }, { ".OpenMemory" }, { ".Chmod" },
{ ".Chown" }, { ".Chgrp" }
};
TRANS_SUBR_INFO *tsi = &subr_info[subr];
if (tsi->info == NULL)
{
tsi->info = SUBR_get(tsi->name);
if (!tsi->info)
ERROR_panic("Unknown intern subroutine: %s", tsi->name);
}
CODE_subr(tsi->info->opcode, nparam, tsi->info->optype, FALSE, tsi->info->min_param == tsi->info->max_param);
}
static bool trans_stream_check(int default_stream, bool check)
{
if (TRANS_is(RS_SHARP))
{
TRANS_expression(FALSE);
if (check)
{
if (PATTERN_is(*JOB->current, RS_COMMA))
{
JOB->current++;
if (PATTERN_is_newline(*JOB->current))
THROW(E_SYNTAX);
}
else
{
if (!PATTERN_is_newline(*JOB->current))
THROW(E_SYNTAX);
}
}
return FALSE;
}
else
{
if (default_stream == TS_NONE)
THROW("Syntax error. &1 expected", "'#'");
CODE_push_number(default_stream);
return TRUE;
}
}
#define trans_stream(_default_stream) trans_stream_check(_default_stream, TRUE)
#define trans_stream_no_check(_default_stream) trans_stream_check(_default_stream, FALSE)
static void trans_print_debug()
{
int nparam = 1;
bool semicolon_or_comma = FALSE;
for(;;)
{
if (PATTERN_is_newline(*JOB->current))
break;
TRANS_expression(FALSE);
nparam++;
semicolon_or_comma = FALSE;
if (PATTERN_is_newline(*JOB->current))
break;
if (TRANS_is(RS_SCOLON))
{
if (TRANS_is(RS_SCOLON))
{
CODE_push_char(' ');
nparam++;
}
semicolon_or_comma = TRUE;
}
else if (TRANS_is(RS_COMMA))
{
CODE_push_char('\t');
nparam++;
semicolon_or_comma = TRUE;
}
else
THROW(E_SYNTAX);
}
if (!semicolon_or_comma)
{
CODE_push_char('\n');
nparam++;
}
trans_subr(TS_SUBR_PRINT, nparam);
CODE_drop();
}
void TRANS_print(void)
{
trans_stream(TS_STDOUT);
trans_print_debug();
}
void TRANS_debug(void)
{
if (!JOB->debug)
{
while (!PATTERN_is_newline(*JOB->current))
JOB->current++;
return;
}
trans_subr(TS_SUBR_DEBUG, 0);
CODE_drop();
CODE_push_number(2); // stderr
trans_print_debug();
}
void TRANS_error(void)
{
if (TRANS_is(RS_TO))
{
if (TRANS_is(RS_DEFAULT))
CODE_push_null();
else
trans_stream(TS_NONE);
trans_subr(TS_SUBR_ERROR_TO, 1);
if (TRANS_in_affectation == 0)
CODE_drop();
}
else
{
CODE_push_number(2); // stderr
trans_print_debug();
}
}
static int trans_binary_type(void)
{
int index;
int nparam = 0;
if (PATTERN_is_class(*JOB->current))
{
index = CLASS_add_class(JOB->class, PATTERN_index(*JOB->current));
if (PATTERN_is(JOB->current[1], RS_LSQR))
index = CLASS_get_array_class(JOB->class, T_OBJECT, index);
CODE_push_class(index);
}
else if (PATTERN_is_type(*JOB->current))
{
if (PATTERN_is(JOB->current[1], RS_LSQR))
{
index = CLASS_get_array_class(JOB->class, RES_get_type(PATTERN_index(*JOB->current)), -1);
CODE_push_class(index);
}
else
{
index = RES_get_type(PATTERN_index(*JOB->current));
CODE_push_number(index);
}
}
else
THROW(E_SYNTAX);
JOB->current++;
nparam++;
#if 0
if (TRANS_is(RS_LSQR))
{
TRANS_expression(FALSE);
nparam++;
TRANS_want(RS_RSQR, NULL);
}
else if (TRANS_is(RS_STAR))
{
if (!string)
THROW("Syntax error");
TRANS_expression(FALSE);
nparam++;
}
#endif
return nparam;
}
void TRANS_write(void)
{
trans_stream(TS_STDOUT);
TRANS_expression(FALSE);
if (TRANS_is(RS_AS))
{
trans_binary_type();
trans_subr(TS_SUBR_WRITE, 3);
}
else
{
if (TRANS_is(RS_COMMA))
TRANS_expression(FALSE);
else
{
if (JOB->no_old_read_syntax)
THROW("Syntax error. &1 expected", "AS");
CODE_push_number(-1);
}
trans_subr(TS_SUBR_WRITE_BYTES, 3);
}
CODE_drop();
}
void TRANS_output_to()
{
TRANS_want(RS_TO, NULL);
if (TRANS_is(RS_DEFAULT))
CODE_push_null();
else
trans_stream(TS_NONE);
trans_subr(TS_SUBR_OUTPUT_TO, 1);
if (TRANS_in_affectation == 0)
CODE_drop();
}
void TRANS_input_from()
{
if (TRANS_is(RS_DEFAULT))
CODE_push_null();
else
trans_stream(TS_NONE);
trans_subr(TS_SUBR_INPUT_FROM, 1);
if (TRANS_in_affectation == 0)
CODE_drop();
}
void TRANS_input(void)
{
bool stream = TRUE;
if (TRANS_is(RS_FROM))
{
TRANS_input_from();
return;
}
trans_stream(TS_STDIN);
for(;;)
{
trans_subr(TS_SUBR_INPUT, (stream ? 1 : 0));
stream = FALSE;
TRANS_reference();
if (PATTERN_is_newline(*JOB->current))
break;
if (!PATTERN_is(*JOB->current, RS_COMMA)
&& !PATTERN_is(*JOB->current, RS_SCOLON))
THROW(E_SYNTAX);
JOB->current++;
}
}
void TRANS_read_old(void)
{
PATTERN *save_var;
PATTERN *save_current;
TYPE type;
if (JOB->no_old_read_syntax)
THROW(E_UNEXPECTED, "READ");
trans_stream(TS_STDIN);
save_var = JOB->current;
type = TRANS_variable_get_type();
if (TRANS_is(RS_COMMA))
{
TRANS_expression(FALSE);
trans_subr(TS_SUBR_READ_BYTES, 2);
}
else
{
int id = TYPE_get_id(type);
CODE_push_number(id);
trans_subr(TS_SUBR_READ, 2);
}
save_current = JOB->current;
JOB->current = save_var;
TRANS_reference();
JOB->current = save_current;
}
void TRANS_read(void)
{
bool def = trans_stream_no_check(TS_STDIN);
if (TRANS_is(RS_AS))
{
trans_binary_type();
trans_subr(TS_SUBR_READ, 2);
}
else
{
if (!def)
TRANS_want(RS_COMMA, NULL);
TRANS_expression(FALSE);
trans_subr(TS_SUBR_READ_BYTES, 2);
}
}
void TRANS_open(void)
{
int mode = TS_MODE_READ;
if (TRANS_is(RS_PIPE))
{
TRANS_pipe();
return;
}
else if (TRANS_is(RS_MEMORY))
{
TRANS_memory();
return;
}
else if (TRANS_is(RS_STRING))
{
TRANS_open_string();
return;
}
/* Nom du fichier */
TRANS_expression(FALSE);
/* mode d'ouverture */
if (TRANS_is(RS_FOR))
{
if (TRANS_is(RS_READ))
mode |= TS_MODE_READ | TS_MODE_DIRECT;
else if (TRANS_is(RS_INPUT))
mode |= TS_MODE_READ;
if (TRANS_is(RS_WRITE))
mode |= TS_MODE_WRITE | TS_MODE_DIRECT;
else if (TRANS_is(RS_OUTPUT))
mode |= TS_MODE_WRITE;
if (TRANS_is(RS_CREATE))
mode |= TS_MODE_CREATE;
else if (TRANS_is(RS_APPEND))
mode |= TS_MODE_APPEND;
//if (TRANS_is(RS_DIRECT))
// mode |= TS_MODE_DIRECT;
if (TRANS_is(RS_WATCH))
mode |= TS_MODE_WATCH;
/*if (TRANS_is(RS_BIG))
mode |= TS_MODE_BIG;
else if (TRANS_is(RS_LITTLE))
mode |= TS_MODE_LITTLE;*/
/*JOB->current--;
if (PATTERN_is(*JOB->current, RS_FOR))
THROW("Syntax error in file open mode");
JOB->current++;*/
}
CODE_push_number(mode);
trans_subr(TS_SUBR_OPEN, 2);
/*if (TRANS_in_affectation == 0)
{
//CODE_drop();
TRANS_want(RS_AS, NULL);
TRANS_ignore(RS_SHARP);
TRANS_reference();
}*/
}
void TRANS_pipe(void)
{
int mode = TS_MODE_READ;
/* Nom du fichier */
TRANS_expression(FALSE);
/* mode d'ouverture */
if (TRANS_is(RS_FOR))
{
if (TRANS_is(RS_READ))
mode |= TS_MODE_READ | TS_MODE_DIRECT;
//else if (TRANS_is(RS_INPUT))
// mode |= TS_MODE_READ;
if (TRANS_is(RS_WRITE))
mode |= TS_MODE_WRITE | TS_MODE_DIRECT;
//else if (TRANS_is(RS_OUTPUT))
// mode |= TS_MODE_WRITE;
if (TRANS_is(RS_WATCH))
mode |= TS_MODE_WATCH;
}
CODE_push_number(mode | TS_MODE_PIPE);
trans_subr(TS_SUBR_OPEN, 2);
}
void TRANS_memory(void)
{
int mode = TS_MODE_READ;
/* Memory address */
TRANS_expression(FALSE);
/* Open mode */
if (TRANS_is(RS_FOR))
{
if (TRANS_is(RS_READ))
mode |= TS_MODE_READ | TS_MODE_DIRECT;
if (TRANS_is(RS_WRITE))
mode |= TS_MODE_WRITE | TS_MODE_DIRECT;
}
CODE_push_number(mode);
trans_subr(TS_SUBR_OPEN_MEMORY, 2);
}
void TRANS_open_string(void)
{
int mode = TS_MODE_READ;
/* Nom du fichier */
if (!PATTERN_is(*JOB->current, RS_FOR))
TRANS_expression(FALSE);
else
CODE_push_null();
/* mode d'ouverture */
if (TRANS_is(RS_FOR))
{
if (TRANS_is(RS_READ))
mode |= TS_MODE_READ | TS_MODE_DIRECT;
if (TRANS_is(RS_WRITE))
mode |= TS_MODE_WRITE | TS_MODE_DIRECT;
}
CODE_push_number(mode | TS_MODE_STRING);
trans_subr(TS_SUBR_OPEN, 2);
}
void TRANS_close(void)
{
if (PATTERN_is_newline(*JOB->current))
THROW(E_SYNTAX);
TRANS_ignore(RS_SHARP);
TRANS_expression(FALSE);
trans_subr(TS_SUBR_CLOSE, 1);
if (TRANS_in_affectation == 0)
CODE_drop();
}
void TRANS_lock(void)
{
if (PATTERN_is_newline(*JOB->current))
THROW(E_SYNTAX);
if (!TRANS_in_affectation)
THROW("Useless LOCK");
TRANS_expression(FALSE);
trans_subr(TS_SUBR_LOCK, 1);
}
void TRANS_unlock(void)
{
if (PATTERN_is_newline(*JOB->current))
THROW(E_SYNTAX);
TRANS_ignore(RS_SHARP);
TRANS_expression(FALSE);
trans_subr(TS_SUBR_UNLOCK, 1);
CODE_drop();
}
void TRANS_seek(void)
{
int nparam;
trans_stream(TS_NONE);
TRANS_expression(FALSE);
nparam = 2;
/*
if (TRANS_is(RS_COMMA))
{
TRANS_expression(FALSE);
nparam++;
}
*/
trans_subr(TS_SUBR_SEEK, nparam);
CODE_drop();
}
void TRANS_line_input(void)
{
if (TRANS_is(RS_INPUT))
{
trans_stream(TS_STDIN);
trans_subr(TS_SUBR_LINE_INPUT, 1);
TRANS_reference();
}
else
THROW(E_SYNTAX);
}
void TRANS_flush(void)
{
trans_stream(TS_STDOUT);
trans_subr(TS_SUBR_FLUSH, 1);
CODE_drop();
}
void TRANS_quit(void)
{
if (PATTERN_is_newline(*JOB->current))
{
CODE_quit(FALSE);
}
else
{
TRANS_expression(FALSE);
CODE_quit(TRUE);
}
}
void TRANS_randomize(void)
{
if (PATTERN_is_newline(*JOB->current))
{
trans_subr(TS_SUBR_RANDOMIZE, 0);
}
else
{
TRANS_expression(FALSE);
trans_subr(TS_SUBR_RANDOMIZE, 1);
}
CODE_drop();
}
static void trans_exec_shell(bool shell)
{
int mode = TS_EXEC_NONE;
bool wait;
bool as = TRUE;
TRANS_expression(FALSE);
if (TRANS_is(RS_WITH))
TRANS_expression(FALSE);
else
CODE_push_null();
wait = TRANS_is(RS_WAIT);
if (TRANS_is(RS_FOR))
{
if (TRANS_is(RS_READ))
mode |= TS_EXEC_READ;
if (TRANS_is(RS_WRITE))
mode |= TS_EXEC_WRITE;
if (mode == 0)
{
mode |= TS_EXEC_TERM;
if (TRANS_is(RS_INPUT))
mode |= TS_EXEC_READ;
if (TRANS_is(RS_OUTPUT))
mode |= TS_EXEC_WRITE;
}
}
else if (TRANS_is(RS_TO))
{
if (TRANS_in_affectation)
THROW("Syntax error. Cannot use this syntax in assignment");
mode = TS_EXEC_STRING;
wait = TRUE;
as = FALSE;
}
if (wait) mode |= TS_EXEC_WAIT;
CODE_push_number(mode);
if (as && TRANS_is(RS_AS))
TRANS_expression(FALSE);
else
CODE_push_null();
trans_subr(shell ? TS_SUBR_SHELL : TS_SUBR_EXEC, 4);
if (mode & TS_EXEC_STRING)
TRANS_reference();
else if (TRANS_in_affectation == 0)
CODE_drop();
}
void TRANS_exec(void)
{
trans_exec_shell(FALSE);
}
void TRANS_shell(void)
{
trans_exec_shell(TRUE);
}
void TRANS_wait(void)
{
int nparam = 0;
if (!PATTERN_is_newline(*JOB->current))
{
TRANS_expression(FALSE);
nparam = 1;
}
trans_subr(TS_SUBR_WAIT, nparam);
CODE_drop();
}
void TRANS_sleep(void)
{
TRANS_expression(FALSE);
trans_subr(TS_SUBR_SLEEP, 1);
CODE_drop();
}
void TRANS_kill(void)
{
TRANS_expression(FALSE);
trans_subr(TS_SUBR_KILL, 1);
CODE_drop();
}
void TRANS_move(void)
{
TRANS_expression(FALSE);
TRANS_want(RS_TO, NULL);
TRANS_expression(FALSE);
trans_subr(TS_SUBR_MOVE, 2);
CODE_drop();
}
void TRANS_copy(void)
{
TRANS_expression(FALSE);
TRANS_want(RS_TO, NULL);
TRANS_expression(FALSE);
trans_subr(TS_SUBR_COPY, 2);
CODE_drop();
}
void TRANS_link(void)
{
TRANS_expression(FALSE);
TRANS_want(RS_TO, NULL);
TRANS_expression(FALSE);
trans_subr(TS_SUBR_LINK, 2);
CODE_drop();
}
void TRANS_chmod(void)
{
TRANS_expression(FALSE);
TRANS_want(RS_TO, NULL);
TRANS_expression(FALSE);
trans_subr(TS_SUBR_CHMOD, 2);
CODE_drop();
}
void TRANS_chown(void)
{
TRANS_expression(FALSE);
TRANS_want(RS_TO, NULL);
TRANS_expression(FALSE);
trans_subr(TS_SUBR_CHOWN, 2);
CODE_drop();
}
void TRANS_chgrp(void)
{
TRANS_expression(FALSE);
TRANS_want(RS_TO, NULL);
TRANS_expression(FALSE);
trans_subr(TS_SUBR_CHGRP, 2);
CODE_drop();
}
void TRANS_inc(void)
{
PATTERN *save = JOB->current;
TRANS_expression(FALSE);
CODE_push_number(1);
CODE_op(C_ADD, 0, 2, TRUE);
JOB->current = save;
TRANS_reference();
}
void TRANS_dec(void)
{
PATTERN *save = JOB->current;
TRANS_expression(FALSE);
CODE_push_number(1);
CODE_op(C_SUB, 0, 2, TRUE);
JOB->current = save;
TRANS_reference();
}
void TRANS_swap(void)
{
PATTERN *sa;
PATTERN *sb;
PATTERN *current;
sa = JOB->current;
TRANS_expression(FALSE);
TRANS_want(RS_COMMA, "Comma");
sb = JOB->current;
TRANS_expression(FALSE);
current = JOB->current;
JOB->current = sa;
TRANS_reference();
JOB->current = sb;
TRANS_reference();
JOB->current = current;
}
void TRANS_mkdir(void)
{
TRANS_expression(FALSE);
trans_subr(TS_SUBR_MKDIR, 1);
CODE_drop();
}
void TRANS_rmdir(void)
{
TRANS_expression(FALSE);
trans_subr(TS_SUBR_RMDIR, 1);
CODE_drop();
}
void TRANS_mid()
{
PATTERN *str;
PATTERN *pos;
PATTERN *len;
PATTERN *save;
TRANS_want(RS_LBRA, "Left bracket");
str = JOB->current;
TRANS_expression(FALSE);
TRANS_want(RS_COMMA, "Comma");
pos = JOB->current;
TRANS_expression(FALSE);
CODE_push_number(1);
CODE_op(C_SUB, 0, 2, TRUE);
TRANS_subr(TS_SUBR_LEFT, 2);
if (TRANS_is(RS_COMMA))
{
len = JOB->current;
TRANS_ignore_expression();
}
else
{
len = NULL;
}
TRANS_want(RS_RBRA, "Right bracket");
TRANS_want(RS_EQUAL, "Equal");
TRANS_expression(FALSE);
save = JOB->current;
if (len)
{
JOB->current = str;
TRANS_expression(FALSE);
JOB->current = pos;
TRANS_expression(FALSE);
JOB->current = len;
TRANS_expression(FALSE);
CODE_op(C_ADD, 0, 2, TRUE);
TRANS_subr(TS_SUBR_MID, 2);
}
CODE_op(C_CAT, 0, len ? 3 : 2, FALSE);
JOB->current = str;
TRANS_reference();
JOB->current = save;
}
#if 0
void TRANS_scan(void)
{
PATTERN *save;
int noutput = 0;
TRANS_expression(FALSE);
TRANS_want(RS_WITH, NULL);
TRANS_expression(FALSE);
TRANS_want(RS_TO, NULL);
save = JOB->current;
for(;;)
{
TRANS_expression(FALSE);
noutput++;
if (!TRANS_is(RS_COMMA))
break;
}
JOB->current = save;
trans_subr_output(TSO_SUBR_SCAN, 2 + noutput, noutput);
for(;;)
{
TRANS_reference();
if (!TRANS_is(RS_COMMA))
break;
}
}
#endif
void TRANS_subr(int subr, int nparam)
{
trans_subr(subr, nparam);
}