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#include <gmp.h>
#include "../ast.h"
#include "../compile.h"
#include "../environment.h"
#include "../stdlib/datatypes.h"
#include "../stdlib/integers.h"
#include "../stdlib/text.h"
#include "../typecheck.h"
#include "../types.h"
#include "promotions.h"
Text_t compile_int_to_type(env_t *env, ast_t *ast, type_t *target) {
if (ast->tag != Int) {
Text_t code = compile(env, ast);
type_t *actual_type = get_type(env, ast);
if (!promote(env, ast, &code, actual_type, target))
code_err(ast, "I couldn't promote this ", type_to_str(actual_type), " to a ", type_to_str(target));
return code;
}
if (target->tag == BigIntType) return compile(env, ast);
if (target->tag == OptionalType && Match(target, OptionalType)->type)
return compile_int_to_type(env, ast, Match(target, OptionalType)->type);
const char *literal = Match(ast, Int)->str;
OptionalInt_t int_val = Int$from_str(literal);
if (int_val.small == 0) code_err(ast, "Failed to parse this integer");
mpz_t i;
mpz_init_set_int(i, int_val);
char *c_literal;
if (strncmp(literal, "0x", 2) == 0 || strncmp(literal, "0X", 2) == 0 || strncmp(literal, "0b", 2) == 0) {
gmp_asprintf(&c_literal, "0x%ZX", i);
} else if (strncmp(literal, "0o", 2) == 0) {
gmp_asprintf(&c_literal, "%#Zo", i);
} else {
gmp_asprintf(&c_literal, "%#Zd", i);
}
if (target->tag == ByteType) {
if (mpz_cmp_si(i, UINT8_MAX) <= 0 && mpz_cmp_si(i, 0) >= 0) return Texts("(Byte_t)(", c_literal, ")");
code_err(ast, "This integer cannot fit in a byte");
} else if (target->tag == NumType) {
if (Match(target, NumType)->bits == TYPE_NBITS64) {
return Texts("N64(", c_literal, ")");
} else {
return Texts("N32(", c_literal, ")");
}
} else if (target->tag == IntType) {
int64_t target_bits = (int64_t)Match(target, IntType)->bits;
switch (target_bits) {
case TYPE_IBITS64:
if (mpz_cmp_si(i, INT64_MIN) == 0) return Text("I64(INT64_MIN)");
if (mpz_cmp_si(i, INT64_MAX) <= 0 && mpz_cmp_si(i, INT64_MIN) >= 0) return Texts("I64(", c_literal, "L)");
break;
case TYPE_IBITS32:
if (mpz_cmp_si(i, INT32_MAX) <= 0 && mpz_cmp_si(i, INT32_MIN) >= 0) return Texts("I32(", c_literal, ")");
break;
case TYPE_IBITS16:
if (mpz_cmp_si(i, INT16_MAX) <= 0 && mpz_cmp_si(i, INT16_MIN) >= 0) return Texts("I16(", c_literal, ")");
break;
case TYPE_IBITS8:
if (mpz_cmp_si(i, INT8_MAX) <= 0 && mpz_cmp_si(i, INT8_MIN) >= 0) return Texts("I8(", c_literal, ")");
break;
default: break;
}
code_err(ast, "This integer cannot fit in a ", target_bits, "-bit value");
} else {
code_err(ast, "I don't know how to compile this to a ", type_to_str(target));
}
return EMPTY_TEXT;
}
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