mirror of
https://github.com/odin-lang/Odin.git
synced 2025-12-29 09:24:33 +00:00
720 lines
16 KiB
C++
720 lines
16 KiB
C++
#include <math.h>
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// TODO(bill): Big numbers
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// IMPORTANT TODO(bill): This needs to be completely fixed!!!!!!!!
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struct Ast;
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struct HashKey;
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struct Type;
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struct Entity;
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bool are_types_identical(Type *x, Type *y);
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struct Complex128 {
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f64 real, imag;
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};
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enum ExactValueKind {
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ExactValue_Invalid,
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ExactValue_Bool,
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ExactValue_String,
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ExactValue_Integer,
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ExactValue_Float,
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ExactValue_Complex,
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ExactValue_Pointer,
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ExactValue_Compound, // TODO(bill): Is this good enough?
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ExactValue_Procedure, // TODO(bill): Is this good enough?
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ExactValue_Count,
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};
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struct ExactValue {
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ExactValueKind kind;
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union {
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bool value_bool;
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String value_string;
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BigInt value_integer; // NOTE(bill): This must be an integer and not a pointer
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f64 value_float;
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i64 value_pointer;
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Complex128 value_complex;
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Ast * value_compound;
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Ast * value_procedure;
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};
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};
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gb_global ExactValue const empty_exact_value = {};
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HashKey hash_exact_value(ExactValue v) {
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HashKey empty = {};
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switch (v.kind) {
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case ExactValue_Invalid:
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return empty;
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case ExactValue_Bool:
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return hash_integer(u64(v.value_bool));
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case ExactValue_String:
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return hash_string(v.value_string);
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case ExactValue_Integer: {
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u64 *d = big_int_ptr(&v.value_integer);
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u64 x = 0;
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for (i32 i = 0; i < v.value_integer.len; i++) {
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x |= d[i];
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}
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return hash_integer(x);
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}
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case ExactValue_Float:
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return hash_f64(v.value_float);
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case ExactValue_Pointer:
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return hash_integer(v.value_pointer);
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case ExactValue_Complex:
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return hashing_proc(&v.value_complex, gb_size_of(Complex128));
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case ExactValue_Compound:
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return hash_pointer(v.value_compound);
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case ExactValue_Procedure:
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return hash_pointer(v.value_procedure);
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}
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return hashing_proc(&v, gb_size_of(ExactValue));
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}
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ExactValue exact_value_compound(Ast *node) {
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ExactValue result = {ExactValue_Compound};
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result.value_compound = node;
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return result;
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}
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ExactValue exact_value_bool(bool b) {
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ExactValue result = {ExactValue_Bool};
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result.value_bool = (b != 0);
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return result;
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}
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ExactValue exact_value_string(String string) {
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// TODO(bill): Allow for numbers with underscores in them
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ExactValue result = {ExactValue_String};
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result.value_string = string;
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return result;
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}
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ExactValue exact_value_i64(i64 i) {
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ExactValue result = {ExactValue_Integer};
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big_int_from_i64(&result.value_integer, i);
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return result;
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}
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ExactValue exact_value_u64(u64 i) {
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ExactValue result = {ExactValue_Integer};
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big_int_from_u64(&result.value_integer, i);
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return result;
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}
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ExactValue exact_value_float(f64 f) {
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ExactValue result = {ExactValue_Float};
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result.value_float = f;
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return result;
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}
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ExactValue exact_value_complex(f64 real, f64 imag) {
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ExactValue result = {ExactValue_Complex};
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result.value_complex.real = real;
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result.value_complex.imag = imag;
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return result;
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}
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ExactValue exact_value_pointer(i64 ptr) {
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ExactValue result = {ExactValue_Pointer};
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result.value_pointer = ptr;
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return result;
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}
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ExactValue exact_value_procedure(Ast *node) {
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ExactValue result = {ExactValue_Procedure};
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result.value_procedure = node;
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return result;
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}
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ExactValue exact_value_integer_from_string(String const &string) {
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ExactValue result = {ExactValue_Integer};
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big_int_from_string(&result.value_integer, string);
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return result;
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}
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f64 float_from_string(String string) {
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isize i = 0;
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u8 *str = string.text;
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isize len = string.len;
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f64 sign = 1.0;
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if (str[i] == '-') {
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sign = -1.0;
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i++;
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} else if (*str == '+') {
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i++;
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}
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f64 value = 0.0;
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for (; i < len; i++) {
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Rune r = cast(Rune)str[i];
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if (r == '_') {
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continue;
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}
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i64 v = digit_value(r);
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if (v >= 10) {
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break;
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}
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value *= 10.0;
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value += v;
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}
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if (str[i] == '.') {
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f64 pow10 = 10.0;
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i++;
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for (; i < string.len; i++) {
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Rune r = cast(Rune)str[i];
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if (r == '_') {
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continue;
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}
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i64 v = digit_value(r);
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if (v >= 10) {
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break;
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}
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value += v/pow10;
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pow10 *= 10.0;
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}
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}
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bool frac = false;
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f64 scale = 1.0;
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if ((str[i] == 'e') || (str[i] == 'E')) {
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i++;
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if (str[i] == '-') {
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frac = true;
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i++;
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} else if (str[i] == '+') {
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i++;
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}
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u32 exp = 0;
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for (; i < len; i++) {
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Rune r = cast(Rune)str[i];
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if (r == '_') {
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continue;
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}
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u32 d = cast(u32)digit_value(r);
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if (d >= 10) {
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break;
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}
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exp = exp * 10 + d;
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}
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if (exp > 308) exp = 308;
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while (exp >= 50) { scale *= 1e50; exp -= 50; }
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while (exp >= 8) { scale *= 1e8; exp -= 8; }
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while (exp > 0) { scale *= 10.0; exp -= 1; }
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}
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return sign * (frac ? (value / scale) : (value * scale));
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}
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ExactValue exact_value_float_from_string(String string) {
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if (string.len > 2 && string[0] == '0' && string[1] == 'h') {
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isize digit_count = 0;
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for (isize i = 2; i < string.len; i++) {
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if (string[i] != '_') {
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digit_count += 1;
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}
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}
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u64 u = u64_from_string(string);
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if (digit_count == 8) {
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u32 x = cast(u32)u;
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f32 f = bit_cast<f32>(x);
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return exact_value_float(cast(f64)f);
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} else if (digit_count == 16) {
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f64 f = bit_cast<f64>(u);
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return exact_value_float(f);
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} else {
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GB_PANIC("Invalid hexadecimal float, expected 8 or 16 digits, got %td", digit_count);
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}
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}
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f64 f = float_from_string(string);
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return exact_value_float(f);
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}
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ExactValue exact_value_from_basic_literal(Token token) {
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switch (token.kind) {
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case Token_String: return exact_value_string(token.string);
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case Token_Integer: return exact_value_integer_from_string(token.string);
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case Token_Float: return exact_value_float_from_string(token.string);
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case Token_Imag: {
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String str = token.string;
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Rune last_rune = cast(Rune)str[str.len-1];
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str.len--; // Ignore the 'i|j|k'
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f64 imag = float_from_string(str);
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if (last_rune == 'i') {
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return exact_value_complex(0, imag);
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}
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}
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case Token_Rune: {
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Rune r = GB_RUNE_INVALID;
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gb_utf8_decode(token.string.text, token.string.len, &r);
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// gb_printf("%.*s rune: %d\n", LIT(token.string), r);
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return exact_value_i64(r);
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}
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default:
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GB_PANIC("Invalid token for basic literal");
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break;
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}
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ExactValue result = {ExactValue_Invalid};
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return result;
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}
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ExactValue exact_value_to_integer(ExactValue v) {
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switch (v.kind) {
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case ExactValue_Integer:
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return v;
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case ExactValue_Float: {
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i64 i = cast(i64)v.value_float;
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f64 f = cast(f64)i;
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if (f == v.value_float) {
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return exact_value_i64(i);
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}
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break;
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}
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case ExactValue_Pointer:
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return exact_value_i64(cast(i64)cast(intptr)v.value_pointer);
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}
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ExactValue r = {ExactValue_Invalid};
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return r;
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}
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ExactValue exact_value_to_float(ExactValue v) {
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switch (v.kind) {
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case ExactValue_Integer:
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return exact_value_float(big_int_to_f64(&v.value_integer));
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case ExactValue_Float:
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return v;
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}
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ExactValue r = {ExactValue_Invalid};
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return r;
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}
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ExactValue exact_value_to_complex(ExactValue v) {
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switch (v.kind) {
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case ExactValue_Integer:
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return exact_value_complex(big_int_to_f64(&v.value_integer), 0);
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case ExactValue_Float:
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return exact_value_complex(v.value_float, 0);
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case ExactValue_Complex:
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return v;
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}
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ExactValue r = {ExactValue_Invalid};
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return r;
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}
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ExactValue exact_value_real(ExactValue v) {
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switch (v.kind) {
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case ExactValue_Integer:
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case ExactValue_Float:
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return v;
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case ExactValue_Complex:
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return exact_value_float(v.value_complex.real);
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}
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ExactValue r = {ExactValue_Invalid};
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return r;
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}
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ExactValue exact_value_imag(ExactValue v) {
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switch (v.kind) {
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case ExactValue_Integer:
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case ExactValue_Float:
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return exact_value_i64(0);
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case ExactValue_Complex:
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return exact_value_float(v.value_complex.imag);
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}
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ExactValue r = {ExactValue_Invalid};
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return r;
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}
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ExactValue exact_value_make_imag(ExactValue v) {
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switch (v.kind) {
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case ExactValue_Integer:
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return exact_value_complex(0, exact_value_to_float(v).value_float);
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case ExactValue_Float:
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return exact_value_complex(0, v.value_float);
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default:
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GB_PANIC("Expected an integer or float type for 'exact_value_make_imag'");
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}
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ExactValue r = {ExactValue_Invalid};
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return r;
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}
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i64 exact_value_to_i64(ExactValue v) {
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v = exact_value_to_integer(v);
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if (v.kind == ExactValue_Integer) {
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return big_int_to_i64(&v.value_integer);
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}
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return 0;
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}
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f64 exact_value_to_f64(ExactValue v) {
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v = exact_value_to_float(v);
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if (v.kind == ExactValue_Float) {
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return v.value_float;
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}
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return 0.0;
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}
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ExactValue exact_unary_operator_value(TokenKind op, ExactValue v, i32 precision, bool is_unsigned) {
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switch (op) {
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case Token_Add: {
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switch (v.kind) {
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case ExactValue_Invalid:
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case ExactValue_Integer:
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case ExactValue_Float:
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case ExactValue_Complex:
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return v;
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}
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break;
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}
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case Token_Sub: {
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switch (v.kind) {
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case ExactValue_Invalid:
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return v;
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case ExactValue_Integer: {
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ExactValue i = {ExactValue_Integer};
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big_int_neg(&i.value_integer, &v.value_integer);
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return i;
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}
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case ExactValue_Float: {
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ExactValue i = v;
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i.value_float = -i.value_float;
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return i;
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}
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case ExactValue_Complex: {
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f64 real = v.value_complex.real;
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f64 imag = v.value_complex.imag;
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return exact_value_complex(-real, -imag);
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}
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}
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break;
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}
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case Token_Xor: {
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switch (v.kind) {
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case ExactValue_Invalid:
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return v;
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case ExactValue_Integer: {
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GB_ASSERT(precision != 0);
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ExactValue i = {ExactValue_Integer};
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big_int_not(&i.value_integer, &v.value_integer, precision, !is_unsigned);
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return i;
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}
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default:
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goto failure;
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}
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}
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case Token_Not: {
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switch (v.kind) {
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case ExactValue_Invalid: return v;
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case ExactValue_Bool:
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return exact_value_bool(!v.value_bool);
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}
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break;
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}
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}
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failure:
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GB_PANIC("Invalid unary operation, %.*s", LIT(token_strings[op]));
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ExactValue error_value = {};
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return error_value;
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}
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// NOTE(bill): Make sure things are evaluated in correct order
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i32 exact_value_order(ExactValue const &v) {
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switch (v.kind) {
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case ExactValue_Invalid:
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return 0;
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case ExactValue_Bool:
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case ExactValue_String:
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return 1;
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case ExactValue_Integer:
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return 2;
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case ExactValue_Float:
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return 3;
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case ExactValue_Complex:
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return 4;
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case ExactValue_Pointer:
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return 5;
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default:
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GB_PANIC("How'd you get here? Invalid Value.kind");
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return -1;
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}
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}
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void match_exact_values(ExactValue *x, ExactValue *y) {
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if (exact_value_order(*y) < exact_value_order(*x)) {
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match_exact_values(y, x);
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return;
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}
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switch (x->kind) {
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case ExactValue_Invalid:
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*y = *x;
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return;
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case ExactValue_Bool:
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case ExactValue_String:
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case ExactValue_Complex:
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return;
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case ExactValue_Integer:
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switch (y->kind) {
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case ExactValue_Integer:
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return;
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case ExactValue_Float:
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// TODO(bill): Is this good enough?
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*x = exact_value_float(big_int_to_f64(&x->value_integer));
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return;
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case ExactValue_Complex:
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*x = exact_value_complex(big_int_to_f64(&x->value_integer), 0);
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return;
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}
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break;
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case ExactValue_Float:
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switch (y->kind) {
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case ExactValue_Float:
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return;
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case ExactValue_Complex:
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*x = exact_value_to_complex(*x);
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return;
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}
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break;
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}
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compiler_error("match_exact_values: How'd you get here? Invalid ExactValueKind %d", x->kind);
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}
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// TODO(bill): Allow for pointer arithmetic? Or are pointer slices good enough?
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ExactValue exact_binary_operator_value(TokenKind op, ExactValue x, ExactValue y) {
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match_exact_values(&x, &y);
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switch (x.kind) {
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case ExactValue_Invalid:
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return x;
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case ExactValue_Bool:
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switch (op) {
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case Token_CmpAnd: return exact_value_bool(x.value_bool && y.value_bool);
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case Token_CmpOr: return exact_value_bool(x.value_bool || y.value_bool);
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case Token_And: return exact_value_bool(x.value_bool & y.value_bool);
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case Token_Or: return exact_value_bool(x.value_bool | y.value_bool);
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default: goto error;
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}
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break;
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case ExactValue_Integer: {
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BigInt const *a = &x.value_integer;
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BigInt const *b = &y.value_integer;
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BigInt c = {};
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switch (op) {
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case Token_Add: big_int_add(&c, a, b); break;
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case Token_Sub: big_int_sub(&c, a, b); break;
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case Token_Mul: big_int_mul(&c, a, b); break;
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case Token_Quo: return exact_value_float(fmod(big_int_to_f64(a), big_int_to_f64(b)));
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case Token_QuoEq: big_int_quo(&c, a, b); break; // NOTE(bill): Integer division
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case Token_Mod: big_int_rem(&c, a, b); break;
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case Token_ModMod: big_int_euclidean_mod(&c, a, b); break;
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case Token_And: big_int_and(&c, a, b); break;
|
|
case Token_Or: big_int_or(&c, a, b); break;
|
|
case Token_Xor: big_int_xor(&c, a, b); break;
|
|
case Token_AndNot: big_int_and_not(&c, a, b); break;
|
|
case Token_Shl: big_int_shl(&c, a, b); break;
|
|
case Token_Shr: big_int_shr(&c, a, b); break;
|
|
default: goto error;
|
|
}
|
|
|
|
ExactValue res = {ExactValue_Integer};
|
|
res.value_integer = c;
|
|
return res;
|
|
}
|
|
|
|
case ExactValue_Float: {
|
|
f64 a = x.value_float;
|
|
f64 b = y.value_float;
|
|
switch (op) {
|
|
case Token_Add: return exact_value_float(a + b);
|
|
case Token_Sub: return exact_value_float(a - b);
|
|
case Token_Mul: return exact_value_float(a * b);
|
|
case Token_Quo: return exact_value_float(a / b);
|
|
default: goto error;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case ExactValue_Complex: {
|
|
y = exact_value_to_complex(y);
|
|
f64 a = x.value_complex.real;
|
|
f64 b = x.value_complex.imag;
|
|
f64 c = y.value_complex.real;
|
|
f64 d = y.value_complex.imag;
|
|
f64 real = 0;
|
|
f64 imag = 0;
|
|
switch (op) {
|
|
case Token_Add:
|
|
real = a + c;
|
|
imag = b + d;
|
|
break;
|
|
case Token_Sub:
|
|
real = a - c;
|
|
imag = b - d;
|
|
break;
|
|
case Token_Mul:
|
|
real = (a*c - b*d);
|
|
imag = (b*c + a*d);
|
|
break;
|
|
case Token_Quo: {
|
|
f64 s = c*c + d*d;
|
|
real = (a*c + b*d)/s;
|
|
imag = (b*c - a*d)/s;
|
|
break;
|
|
}
|
|
default: goto error;
|
|
}
|
|
return exact_value_complex(real, imag);
|
|
break;
|
|
}
|
|
|
|
case ExactValue_String: {
|
|
if (op != Token_Add) goto error;
|
|
|
|
// NOTE(bill): How do you minimize this over allocation?
|
|
String sx = x.value_string;
|
|
String sy = y.value_string;
|
|
isize len = sx.len+sy.len;
|
|
u8 *data = gb_alloc_array(heap_allocator(), u8, len);
|
|
gb_memmove(data, sx.text, sx.len);
|
|
gb_memmove(data+sx.len, sy.text, sy.len);
|
|
return exact_value_string(make_string(data, len));
|
|
break;
|
|
}
|
|
}
|
|
|
|
error:; // NOTE(bill): MSVC accepts this??? apparently you cannot declare variables immediately after labels...
|
|
return empty_exact_value;
|
|
}
|
|
|
|
gb_inline ExactValue exact_value_add(ExactValue const &x, ExactValue const &y) {
|
|
return exact_binary_operator_value(Token_Add, x, y);
|
|
}
|
|
gb_inline ExactValue exact_value_sub(ExactValue const &x, ExactValue const &y) {
|
|
return exact_binary_operator_value(Token_Sub, x, y);
|
|
}
|
|
gb_inline ExactValue exact_value_mul(ExactValue const &x, ExactValue const &y) {
|
|
return exact_binary_operator_value(Token_Mul, x, y);
|
|
}
|
|
gb_inline ExactValue exact_value_quo(ExactValue const &x, ExactValue const &y) {
|
|
return exact_binary_operator_value(Token_Quo, x, y);
|
|
}
|
|
gb_inline ExactValue exact_value_shift(TokenKind op, ExactValue const &x, ExactValue const &y) {
|
|
return exact_binary_operator_value(op, x, y);
|
|
}
|
|
|
|
|
|
i32 cmp_f64(f64 a, f64 b) {
|
|
return (a > b) - (a < b);
|
|
}
|
|
|
|
bool compare_exact_values(TokenKind op, ExactValue x, ExactValue y) {
|
|
match_exact_values(&x, &y);
|
|
|
|
switch (x.kind) {
|
|
case ExactValue_Invalid:
|
|
return false;
|
|
|
|
case ExactValue_Bool:
|
|
switch (op) {
|
|
case Token_CmpEq: return x.value_bool == y.value_bool;
|
|
case Token_NotEq: return x.value_bool != y.value_bool;
|
|
}
|
|
break;
|
|
|
|
case ExactValue_Integer: {
|
|
i32 cmp = big_int_cmp(&x.value_integer, &y.value_integer);
|
|
switch (op) {
|
|
case Token_CmpEq: return cmp == 0;
|
|
case Token_NotEq: return cmp != 0;
|
|
case Token_Lt: return cmp < 0;
|
|
case Token_LtEq: return cmp <= 0;
|
|
case Token_Gt: return cmp > 0;
|
|
case Token_GtEq: return cmp >= 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case ExactValue_Float: {
|
|
f64 a = x.value_float;
|
|
f64 b = y.value_float;
|
|
switch (op) {
|
|
case Token_CmpEq: return cmp_f64(a, b) == 0;
|
|
case Token_NotEq: return cmp_f64(a, b) != 0;
|
|
case Token_Lt: return cmp_f64(a, b) < 0;
|
|
case Token_LtEq: return cmp_f64(a, b) <= 0;
|
|
case Token_Gt: return cmp_f64(a, b) > 0;
|
|
case Token_GtEq: return cmp_f64(a, b) >= 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case ExactValue_Complex: {
|
|
f64 a = x.value_complex.real;
|
|
f64 b = x.value_complex.imag;
|
|
f64 c = y.value_complex.real;
|
|
f64 d = y.value_complex.imag;
|
|
switch (op) {
|
|
case Token_CmpEq: return cmp_f64(a, c) == 0 && cmp_f64(b, d) == 0;
|
|
case Token_NotEq: return cmp_f64(a, c) != 0 || cmp_f64(b, d) != 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case ExactValue_String: {
|
|
String a = x.value_string;
|
|
String b = y.value_string;
|
|
// TODO(bill): gb_memcompare is used because the strings are UTF-8
|
|
switch (op) {
|
|
case Token_CmpEq: return a == b;
|
|
case Token_NotEq: return a != b;
|
|
case Token_Lt: return a < b;
|
|
case Token_LtEq: return a <= b;
|
|
case Token_Gt: return a > b;
|
|
case Token_GtEq: return a >= b;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
GB_PANIC("Invalid comparison");
|
|
return false;
|
|
}
|