root/native.c
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DEFINITIONS
This source file includes following definitions.
- FOPEN_ARGUMENT_TYPE_ERR
- FCLOSE_ARGUMENT_TYPE_ERR
- FGETS_ARGUMENT_TYPE_ERR
- FILE_ALREADY_CLOSED_ERR
- FPUTS_ARGUMENT_TYPE_ERR
- NEW_ARRAY_ARGUMENT_TYPE_ERR
- NEW_ARRAY_ARGUMENT_TOO_FEW_ERR
- EXIT_ARGUMENT_TYPE_ERR
- NEW_EXCEPTION_ARGUMENT_ERR
- FGETS_BAD_MULTIBYTE_CHARACTER_ERR
- NativeErrorCode
- file_finalizer
- nv_print_proc
- check_file_pointer
- nv_fopen_proc
- nv_fclose_proc
- nv_fgets_proc
- nv_fputs_proc
- new_array_sub
- nv_new_array_proc
- nv_new_object_proc
- nv_new_exception_proc
- nv_exit_proc
- crb_add_native_functions
- crb_add_std_fp
#include <stdio.h>
#include <string.h>
#include "MEM.h"
#include "DBG.h"
#include "crowbar.h"
#include "CRB_dev.h"
#define LINE_BUF_SIZE (1024)
typedef enum {
FOPEN_ARGUMENT_TYPE_ERR = 0,
FCLOSE_ARGUMENT_TYPE_ERR,
FGETS_ARGUMENT_TYPE_ERR,
FILE_ALREADY_CLOSED_ERR,
FPUTS_ARGUMENT_TYPE_ERR,
NEW_ARRAY_ARGUMENT_TYPE_ERR,
NEW_ARRAY_ARGUMENT_TOO_FEW_ERR,
EXIT_ARGUMENT_TYPE_ERR,
NEW_EXCEPTION_ARGUMENT_ERR,
FGETS_BAD_MULTIBYTE_CHARACTER_ERR
} NativeErrorCode;
extern CRB_ErrorDefinition crb_native_error_message_format[];
static CRB_NativeLibInfo st_lib_info = {
crb_native_error_message_format,
};
static void file_finalizer(CRB_Interpreter *inter, CRB_Object *obj);
static CRB_NativePointerInfo st_file_type_info = {
"crowbar.lang.file",
file_finalizer
};
static void
file_finalizer(CRB_Interpreter *inter, CRB_Object *obj)
{
FILE *fp;
fp = (FILE*)CRB_object_get_native_pointer(obj);
if (fp && fp != stdin && fp != stdout && fp != stderr) {
fclose(fp);
}
}
static CRB_Value
nv_print_proc(CRB_Interpreter *interpreter,
CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args)
{
CRB_Value value;
CRB_Char *str;
value.type = CRB_NULL_VALUE;
CRB_check_argument_count(interpreter, env, arg_count, 1);
str = CRB_value_to_string(interpreter, env, __LINE__, &args[0]);
CRB_print_wcs(stdout, str);
MEM_free(str);
return value;
}
static void
check_file_pointer(CRB_Interpreter *inter, CRB_LocalEnvironment *env,
CRB_Object *obj)
{
FILE *fp;
fp = (FILE*)CRB_object_get_native_pointer(obj);
if (fp == NULL) {
CRB_error(inter, env, &st_lib_info, __LINE__,
(int)FILE_ALREADY_CLOSED_ERR,
CRB_MESSAGE_ARGUMENT_END);
}
}
static CRB_Value
nv_fopen_proc(CRB_Interpreter *interpreter,
CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args)
{
CRB_Value value;
char *filename;
char *mode;
FILE *fp;
CRB_check_argument_count(interpreter, env, arg_count, 2);
if (args[0].type != CRB_STRING_VALUE
|| args[1].type != CRB_STRING_VALUE) {
CRB_error(interpreter, env, &st_lib_info, __LINE__,
(int)FOPEN_ARGUMENT_TYPE_ERR,
CRB_MESSAGE_ARGUMENT_END);
}
filename = CRB_wcstombs_alloc(CRB_object_get_string(args[0].u.object));
mode = CRB_wcstombs_alloc(CRB_object_get_string(args[1].u.object));
fp = fopen(filename, mode);
if (fp == NULL) {
value.type = CRB_NULL_VALUE;
} else {
value.type = CRB_NATIVE_POINTER_VALUE;
value.u.object
= CRB_create_native_pointer(interpreter, env, fp,
&st_file_type_info);
}
MEM_free(filename);
MEM_free(mode);
return value;
}
static CRB_Value
nv_fclose_proc(CRB_Interpreter *interpreter,
CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args)
{
CRB_Value value;
FILE *fp;
CRB_check_argument_count(interpreter, env, arg_count, 1);
value.type = CRB_NULL_VALUE;
if (args[0].type != CRB_NATIVE_POINTER_VALUE
|| (!CRB_check_native_pointer_type(args[0].u.object,
&st_file_type_info))) {
CRB_error(interpreter, env, &st_lib_info, __LINE__,
(int)FCLOSE_ARGUMENT_TYPE_ERR,
CRB_MESSAGE_ARGUMENT_END);
}
check_file_pointer(interpreter,env, args[0].u.object);
fp = CRB_object_get_native_pointer(args[0].u.object);
fclose(fp);
CRB_object_set_native_pointer(args[0].u.object, NULL);
return value;
}
static CRB_Value
nv_fgets_proc(CRB_Interpreter *interpreter,
CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args)
{
CRB_Value value;
FILE *fp;
char buf[LINE_BUF_SIZE];
char *mb_buf = NULL;
int ret_len = 0;
CRB_Char *wc_str;
CRB_check_argument_count(interpreter, env, arg_count, 1);
if (args[0].type != CRB_NATIVE_POINTER_VALUE
|| (!CRB_check_native_pointer_type(args[0].u.object,
&st_file_type_info))) {
CRB_error(interpreter, env, &st_lib_info, __LINE__,
(int)FGETS_ARGUMENT_TYPE_ERR,
CRB_MESSAGE_ARGUMENT_END);
}
check_file_pointer(interpreter,env, args[0].u.object);
fp = CRB_object_get_native_pointer(args[0].u.object);
while (fgets(buf, LINE_BUF_SIZE, fp)) {
int new_len;
new_len = ret_len + strlen(buf);
mb_buf = MEM_realloc(mb_buf, new_len + 1);
if (ret_len == 0) {
strcpy(mb_buf, buf);
} else {
strcat(mb_buf, buf);
}
ret_len = new_len;
if (mb_buf[ret_len-1] == '\n')
break;
}
if (ret_len > 0) {
wc_str = CRB_mbstowcs_alloc(interpreter, env, __LINE__, mb_buf);
if (wc_str == NULL) {
MEM_free(mb_buf);
CRB_error(interpreter, env, &st_lib_info, __LINE__,
(int)FGETS_BAD_MULTIBYTE_CHARACTER_ERR,
CRB_MESSAGE_ARGUMENT_END);
}
value.type = CRB_STRING_VALUE;
value.u.object = CRB_create_crowbar_string(interpreter, env, wc_str);
} else {
value.type = CRB_NULL_VALUE;
}
MEM_free(mb_buf);
return value;
}
static CRB_Value
nv_fputs_proc(CRB_Interpreter *interpreter,
CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args)
{
CRB_Value value;
FILE *fp;
CRB_check_argument_count(interpreter, env, arg_count, 2);
value.type = CRB_NULL_VALUE;
if (args[0].type != CRB_STRING_VALUE
|| args[1].type != CRB_NATIVE_POINTER_VALUE
|| (!CRB_check_native_pointer_type(args[1].u.object,
&st_file_type_info))) {
CRB_error(interpreter, env, &st_lib_info, __LINE__,
(int)FPUTS_ARGUMENT_TYPE_ERR,
CRB_MESSAGE_ARGUMENT_END);
}
check_file_pointer(interpreter,env, args[1].u.object);
fp = CRB_object_get_native_pointer(args[1].u.object);
CRB_print_wcs(fp, CRB_object_get_string(args[0].u.object));
return value;
}
CRB_Value
new_array_sub(CRB_Interpreter *inter, CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args, int arg_idx)
{
CRB_Value ret;
CRB_Value value;
int size;
int i;
if (args[arg_idx].type != CRB_INT_VALUE) {
CRB_error(inter, env, &st_lib_info, __LINE__,
(int)NEW_ARRAY_ARGUMENT_TYPE_ERR,
CRB_MESSAGE_ARGUMENT_END);
}
size = args[arg_idx].u.int_value;
ret.type = CRB_ARRAY_VALUE;
ret.u.object = CRB_create_array(inter, env, size);
if (arg_idx == arg_count-1) {
value.type = CRB_NULL_VALUE;
for (i = 0; i < size; i++) {
CRB_array_set(inter, env, ret.u.object, i, &value);
}
} else {
for (i = 0; i < size; i++) {
value = new_array_sub(inter, env,
arg_count, args, arg_idx+1);
CRB_array_set(inter, env, ret.u.object, i, &value);
}
}
return ret;
}
static CRB_Value
nv_new_array_proc(CRB_Interpreter *interpreter,
CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args)
{
CRB_Value value;
if (arg_count < 1) {
CRB_error(interpreter, env, &st_lib_info, __LINE__,
(int)NEW_ARRAY_ARGUMENT_TOO_FEW_ERR,
CRB_MESSAGE_ARGUMENT_END);
}
value = new_array_sub(interpreter, env, arg_count, args, 0);
return value;
}
static CRB_Value
nv_new_object_proc(CRB_Interpreter *interpreter,
CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args)
{
CRB_Value value;
CRB_check_argument_count(interpreter, env, arg_count, 0);
value.type = CRB_ASSOC_VALUE;
value.u.object = CRB_create_assoc(interpreter, env);
return value;
}
static CRB_Value
nv_new_exception_proc(CRB_Interpreter *interpreter,
CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args)
{
CRB_Value value;
CRB_check_argument_count(interpreter, env, arg_count, 1);
if (args[0].type != CRB_STRING_VALUE) {
CRB_error(interpreter, env, &st_lib_info, __LINE__,
(int)NEW_EXCEPTION_ARGUMENT_ERR,
CRB_STRING_MESSAGE_ARGUMENT,
"type", CRB_get_type_name(args[0].type),
CRB_MESSAGE_ARGUMENT_END);
}
value.type = CRB_ASSOC_VALUE;
value.u.object = CRB_create_exception(interpreter, env->next,
args[0].u.object,
env->caller_line_number);
return value;
}
static CRB_Value
nv_exit_proc(CRB_Interpreter *interpreter,
CRB_LocalEnvironment *env,
int arg_count, CRB_Value *args)
{
CRB_Value value;
CRB_check_argument_count(interpreter, env, arg_count, 1);
if (args[0].type != CRB_INT_VALUE) {
CRB_error(interpreter, env, &st_lib_info, __LINE__,
(int)EXIT_ARGUMENT_TYPE_ERR,
CRB_STRING_MESSAGE_ARGUMENT,
"type", CRB_get_type_name(args[0].type),
CRB_MESSAGE_ARGUMENT_END);
}
exit(args[0].u.int_value);
return value;
}
void
crb_add_native_functions(CRB_Interpreter *inter)
{
CRB_add_native_function(inter, "print", nv_print_proc);
CRB_add_native_function(inter, "fopen", nv_fopen_proc);
CRB_add_native_function(inter, "fclose", nv_fclose_proc);
CRB_add_native_function(inter, "fgets", nv_fgets_proc);
CRB_add_native_function(inter, "fputs", nv_fputs_proc);
CRB_add_native_function(inter, "new_array", nv_new_array_proc);
CRB_add_native_function(inter, "new_object", nv_new_object_proc);
CRB_add_native_function(inter, "new_exception", nv_new_exception_proc);
CRB_add_native_function(inter, "exit", nv_exit_proc);
}
void
crb_add_std_fp(CRB_Interpreter *inter)
{
CRB_Value fp_value;
fp_value.type = CRB_NATIVE_POINTER_VALUE;
fp_value.u.object = crb_create_native_pointer_i(inter, stdin,
&st_file_type_info);
CRB_add_global_variable(inter, "STDIN", &fp_value, CRB_TRUE);
fp_value.u.object = crb_create_native_pointer_i(inter, stdout,
&st_file_type_info);
CRB_add_global_variable(inter, "STDOUT", &fp_value, CRB_TRUE);
fp_value.u.object = crb_create_native_pointer_i(inter, stderr,
&st_file_type_info);
CRB_add_global_variable(inter, "STDERR", &fp_value, CRB_TRUE);
}