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Implement multi-value charmaps (#1429)

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Sylvie
2024-08-04 17:32:08 -04:00
committed by GitHub
parent 436580a649
commit 9a5b3f0902
16 changed files with 181 additions and 89 deletions
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19
src/asm/rpn.cpp
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@@ -516,13 +516,22 @@ void Expression::makeCheckRST() {
// Checks that an RPN expression's value fits within N bits (signed or unsigned)
void Expression::checkNBit(uint8_t n) const {
if (isKnown())
::checkNBit(value(), n, "Expression");
}
bool checkNBit(int32_t v, uint8_t n, char const *name) {
assume(n != 0); // That doesn't make sense
assume(n < CHAR_BIT * sizeof(int)); // Otherwise `1 << n` is UB
if (isKnown()) {
if (int32_t val = value(); val < -(1 << n) || val >= 1 << n)
warning(WARNING_TRUNCATION_1, "Expression must be %u-bit\n", n);
else if (val < -(1 << (n - 1)))
warning(WARNING_TRUNCATION_2, "Expression must be %u-bit\n", n);
if (v < -(1 << n) || v >= 1 << n) {
warning(WARNING_TRUNCATION_1, "%s must be %u-bit\n", name, n);
return false;
}
if (v < -(1 << (n - 1))) {
warning(WARNING_TRUNCATION_2, "%s must be %u-bit\n", name, n);
return false;
}
return true;
}