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param.cpp
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598 lines (540 loc) · 13.6 KB
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// This file is part of SmallBASIC
//
// This program is distributed under the terms of the GPL v2.0 or later
// Download the GNU Public License (GPL) from www.gnu.org
//
// Copyright(C) 2020 Chris Warren-Smith
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <cassert>
#include <ctype.h>
#include "config.h"
#include "param.h"
#include "hashmap.h"
#include "var.h"
#define MAX_TEXT_BUFFER_LENGTH 1024
void error(var_p_t var, const char *field, int nMin, int nMax) {
char message[256];
snprintf(message, sizeof(message), "Invalid Input: [%s] - expected [%d - %d] arguments", field, nMin, nMax);
v_setstr(var, message);
}
void error(var_p_t var, const char *field, int n) {
char message[256];
snprintf(message, sizeof(message), "Invalid Input: [%s] - expected [%d] arguments", field, n);
v_setstr(var, message);
}
void error(var_p_t var, const char *text) {
char message[256];
snprintf(message, sizeof(message), "Error: [%s]", text);
v_setstr(var, message);
}
var_num_t get_num(var_p_t var) {
var_num_t result;
switch (var->type) {
case V_INT:
result = var->v.i;
break;
case V_NUM:
result = var->v.n;
break;
default:
result = 0.0;
break;
}
return result;
}
bool get_bool(var_p_t var) {
bool result;
switch (var->type) {
case V_INT:
result = (var->v.i != 0);
break;
case V_NUM:
result = (var->v.n != 0);
break;
case V_STR:
result = (strncasecmp(var->v.p.ptr, "true", 4));
break;
default:
result = false;
break;
}
return result;
}
int get_int(var_t *v) {
int result;
switch (v ? v->type : -1) {
case V_INT:
result = v->v.i;
break;
case V_NUM:
result = v->v.n;
break;
default:
result = 0;
break;
}
return result;
}
void v_init(var_t *v) {
v->type = V_INT;
v->const_flag = 0;
v->v.i = 0;
}
uint32_t v_get_capacity(uint32_t size) {
return size + (size / 2) + 1;
}
void v_alloc_capacity(var_t *var, uint32_t size) {
uint32_t capacity = v_get_capacity(size);
v_capacity(var) = capacity;
v_asize(var) = size;
v_data(var) = (var_t *)malloc(sizeof(var_t) * capacity);
if (v_data(var)) {
for (uint32_t i = 0; i < capacity; i++) {
var_t *e = v_elem(var, i);
e->pooled = 0;
v_init(e);
}
}
}
var_t *v_new() {
var_t *result = (var_t *)malloc(sizeof(var_t));
result->pooled = 0;
v_init(result);
return result;
}
void v_array_free(var_t *var) {
uint32_t v_size = v_capacity(var);
if (v_size && v_data(var)) {
for (uint32_t i = 0; i < v_size; i++) {
v_free(v_elem(var, i));
}
free(var->v.a.data);
}
}
void v_free(var_t *var) {
switch (var->type) {
case V_STR:
if (var->v.p.owner) {
free(var->v.p.ptr);
}
break;
case V_ARRAY:
v_array_free(var);
break;
case V_MAP:
assert("cannot free map");
break;
}
}
int set_param_int(int argc, slib_par_t *params, int param, int value, var_t *retval) {
int result;
if (argc < param || !params[param].byref || params[param].var_p->type != V_INT) {
v_setstr(retval, "Cannot assign argument reference");
result = 0;
} else {
v_setint(params[param].var_p, value);
result = 1;
}
return result;
}
void v_setint(var_t *var, var_int_t i) {
v_free(var);
var->type = V_INT;
var->v.i = i;
}
void v_setreal(var_t *var, var_num_t n) {
v_free(var);
var->type = V_NUM;
var->v.n = n;
}
void v_setstr(var_t *var, const char *str) {
int length = strlen(str == nullptr ? 0 : str);
v_setstrn(var, str, length);
}
void v_setstrn(var_t *var, const char *str, int length) {
assert(var->type != V_ARRAY && var->type != V_MAP);
bool isSet = false;
if (var->type == V_STR) {
if (strcmp(str, var->v.p.ptr) == 0) {
// already set
isSet = true;
} else if (var->v.p.owner) {
free(var->v.p.ptr);
}
}
if (!isSet) {
var->type = V_STR;
var->v.p.ptr = (char *)calloc(length + 1, 1);
var->v.p.length = length + 1;
var->v.p.owner = 1;
strncpy(var->v.p.ptr, str, length);
}
}
int v_strlen(const var_t *v) {
int result;
if (v->type == V_STR) {
result = v->v.p.length;
if (result && v->v.p.ptr[result - 1] == '\0') {
result--;
}
} else {
result = 0;
}
return result;
}
void v_new_array(var_t *var, uint32_t size) {
assert(var->type == V_INT);
var->type = V_ARRAY;
v_alloc_capacity(var, size);
}
void v_toarray1(var_t *v, uint32_t r) {
v_new_array(v, r);
v_maxdim(v) = 1;
v_lbound(v, 0) = 0;
v_ubound(v, 0) = r - 1;
}
void v_tomatrix(var_t *v, int r, int c) {
v_new_array(v, r * c);
v_maxdim(v) = 2;
v_lbound(v, 0) = v_lbound(v, 1) = 0;
v_ubound(v, 0) = r - 1;
v_ubound(v, 1) = c - 1;
}
var_p_t map_add_var(var_p_t base, const char *name, int value) {
var_p_t key = v_new();
v_setstr(key, name);
var_p_t var = hashmap_putv(base, key);
v_setint(var, value);
return var;
}
var_p_t map_get(var_p_t base, const char *name) {
var_p_t result;
if (base != nullptr && base->type == V_MAP) {
result = hashmap_get(base, name);
} else {
result = nullptr;
}
return result;
}
void map_init(var_p_t map) {
assert(map->type == V_INT);
v_init(map);
hashmap_create(map, 0);
}
void map_init_id(var_p_t map, int id, int cls_id) {
map_init(map);
map->v.m.id = id;
map->v.m.cls_id = cls_id;
}
int map_get_bool(var_p_t base, const char *name) {
var_p_t var = map_get(base, name);
return var != nullptr ? get_bool(var) : 0;
}
void map_set_int(var_p_t base, const char *name, var_int_t n) {
var_p_t var = map_get(base, name);
if (var != nullptr) {
v_setint(var, n);
}
}
int map_get_int(var_p_t base, const char *name, int def) {
var_p_t var = map_get(base, name);
return var != nullptr ? get_int(var) : def;
}
bool is_array(var_p_t var, uint32_t size) {
return var != nullptr && v_is_type(var, V_ARRAY) && v_asize(var) == size;
}
bool is_map(var_p_t var) {
return var != nullptr && v_is_type(var, V_MAP);
}
bool is_param_int_byref(int argc, slib_par_t *params, int arg) {
return (arg < argc && params[arg].byref &&
(v_is_type(params[arg].var_p, V_INT) || v_is_type(params[arg].var_p, V_NUM)));
}
bool is_param_array(int argc, slib_par_t *params, int n) {
bool result;
if (n >= 0 && n < argc) {
result = (params[n].var_p->type == V_ARRAY);
} else {
result = false;
}
return result;
}
bool is_param_num(int argc, slib_par_t *params, int n) {
int result;
if (n >= 0 && n < argc) {
result = (params[n].var_p->type == V_NUM ||
params[n].var_p->type == V_INT);
} else {
result = false;
}
return result;
}
bool is_param_str(int argc, slib_par_t *params, int n) {
int result;
if (n >= 0 && n < argc) {
result = (params[n].var_p->type == V_STR);
} else {
result = false;
}
return result;
}
bool is_param_map(int argc, slib_par_t *params, int n) {
int result;
if (n >= 0 && n < argc) {
result = (params[n].var_p->type == V_MAP);
} else {
result = false;
}
return result;
}
bool is_param_nil(int argc, slib_par_t *params, int n) {
int result;
if (n >= 0 && n < argc) {
result = (params[n].var_p->type == V_NIL);
} else {
result = false;
}
return result;
}
int get_id(slib_par_t *params, int n) {
return params[n].var_p->v.m.id;
}
int get_param_int(int argc, slib_par_t *params, int n, int def) {
int result;
if (n >= 0 && n < argc) {
switch (params[n].var_p->type) {
case V_INT:
result = params[n].var_p->v.i;
break;
case V_NUM:
result = params[n].var_p->v.n;
break;
default:
result = def;
}
} else {
result = def;
}
return result;
}
var_int_t get_param_int_t(int argc, slib_par_t *params, int n, int def) {
int result;
if (n >= 0 && n < argc) {
switch (params[n].var_p->type) {
case V_INT:
result = params[n].var_p->v.i;
break;
case V_NUM:
result = params[n].var_p->v.n;
break;
default:
result = def;
}
} else {
result = def;
}
return result;
}
var_num_t get_param_num(int argc, slib_par_t *params, int n, var_num_t def) {
var_num_t result;
if (n >= 0 && n < argc) {
switch (params[n].var_p->type) {
case V_INT:
result = params[n].var_p->v.i;
break;
case V_NUM:
result = params[n].var_p->v.n;
break;
default:
result = def;
break;
}
} else {
result = def;
}
return result;
}
var_num_t get_param_num_field(int argc, slib_par_t *params, int n, const char *field) {
var_num_t result;
if (is_param_map(argc, params, n)) {
var_p_t v_value = map_get(params[n].var_p, field);
if (v_is_type(v_value, V_INT)) {
result = v_value->v.i;
} else if (v_is_type(v_value, V_NUM)) {
result = v_value->v.n;
} else {
result = 0;
}
} else {
result = 0;
}
return result;
}
const char *get_param_str(int argc, slib_par_t *params, int n, const char *def) {
const char *result;
static char buf[256];
if (n >= 0 && n < argc) {
switch (params[n].var_p->type) {
case V_STR:
result = params[n].var_p->v.p.ptr;
break;
case V_INT:
sprintf(buf, "%lld", params[n].var_p->v.i);
result = buf;
break;
case V_NUM:
sprintf(buf, "%f", params[n].var_p->v.n);
result = buf;
break;
default:
result = "";
break;
}
} else {
result = def == nullptr ? "" : def;
}
return result;
}
const char *get_param_str_field(int argc, slib_par_t *params, int n, const char *field) {
const char *result;
if (is_param_map(argc, params, n)) {
var_p_t v_value = map_get(params[n].var_p, field);
if (v_is_type(v_value, V_STR)) {
result = v_value->v.p.ptr;
} else {
result = nullptr;
}
} else {
result = nullptr;
}
return result;
}
var_num_t get_map_num(var_p_t map, const char *name) {
var_p_t var = map_get(map, name);
return var != nullptr ? get_num(var) : 0;
}
var_num_t get_array_elem_num(var_p_t array, int index) {
float result;
int size = v_asize(array);
if (index >= 0 && index < size) {
result = get_num(v_elem(array, index));
} else {
result = 0.0;
}
return result;
}
int is_format_char(char c) {
static char specifiers[] = {'d', 'i', 'u', 'o', 'x', 'X', 'f', 'F', 'e', 'E', 'g', 'G', 'a', 'A', 'c', 's', 'n'};
static int len = sizeof(specifiers) / sizeof(char);
int result = 0;
for (int i = 0; i < len && !result; i++) {
result = (c == specifiers[i]);
}
return result;
}
const char *format_text(int argc, slib_par_t *params, int param) {
// supported for inline use only
static char buffer[MAX_TEXT_BUFFER_LENGTH];
const char *format = get_param_str(argc, params, param++, "");
const char *start = format;
const int padding = 10;
char *end = (char *)format;
int length = 0;
bool error = false;
memset(buffer, '\0', MAX_TEXT_BUFFER_LENGTH);
while (*end != '\0' && !error) {
if (*end != '%' || param == argc) {
end++;
} else {
while (*end != '\0') {
// skip next format symbol
end++;
if (is_format_char(*end)) {
// skip terminating format symbol
char formatChar = *end;
end++;
int segLength = end - start;
if (segLength + length + padding < MAX_TEXT_BUFFER_LENGTH) {
char cNull = *end;
int maxChars = MAX_TEXT_BUFFER_LENGTH - length;
int count;
*end = '\0';
// append to buffer, process the next single var-arg
switch (params[param].var_p->type) {
case V_INT:
if (formatChar == 'f') {
double value = (double)params[param].var_p->v.i;
count = snprintf(buffer + length, maxChars, start, value);
} else if (formatChar != 's') {
count = snprintf(buffer + length, maxChars, start, params[param].var_p->v.i);
} else {
count = -1;
}
break;
case V_NUM:
if (formatChar != 's') {
count = snprintf(buffer + length, maxChars, start, params[param].var_p->v.n);
} else {
count = -1;
}
break;
case V_STR:
if (formatChar == 's') {
count = snprintf(buffer + length, maxChars, start, params[param].var_p->v.p.ptr);
} else {
count = -1;
}
break;
default:
count = -1;
break;
}
param++;
length += count;
*end = cNull;
start = end;
if (count < 0 || count >= maxChars) {
error = true;
break;
}
}
break;
} else if (*end != '.' && !isdigit(*end)) {
// non-formatting symbol
buffer[length++] = *end;
buffer[length] = '\0';
end++;
start = end;
break;
}
}
}
}
if (error) {
memset(buffer, '\0', MAX_TEXT_BUFFER_LENGTH);
sprintf(buffer, "ERROR: Invalid text format: %s", format);
} else {
int segLength = end - start;
if (segLength && (segLength + length + padding < MAX_TEXT_BUFFER_LENGTH)) {
strncpy(buffer + length, start, segLength);
buffer[length + segLength + 1] = '\0';
}
}
return buffer;
}
void v_create_func(var_p_t map, const char *name, method cb) {
var_p_t v_func = map_add_var(map, name, 0);
v_func->type = V_FUNC;
v_func->v.fn.cb = cb;
v_func->v.fn.mcb = NULL;
v_func->v.fn.id = 0;
}
void v_create_callback(var_p_t map, const char *name, callback cb) {
var_p_t v_func = map_add_var(map, name, 0);
v_func->type = V_FUNC;
v_func->v.fn.cb = NULL;
v_func->v.fn.mcb = cb;
v_func->v.fn.id = 0;
}
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