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Prefer C++ constructs to C-style sizeof-based macros

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Rangi42
2025-01-24 18:44:43 -05:00
parent 84f59e14ed
commit 890528812e
7 changed files with 25 additions and 26 deletions
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26
src/asm/lexer.cpp
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@@ -500,27 +500,27 @@ BufferedContent::~BufferedContent() {
}
void BufferedContent::advance() {
assume(offset < ARRAY_SIZE(buf));
assume(offset < std::size(buf));
offset++;
if (offset == ARRAY_SIZE(buf))
if (offset == std::size(buf))
offset = 0; // Wrap around if necessary
assume(size > 0);
size--;
}
void BufferedContent::refill() {
size_t target = ARRAY_SIZE(buf) - size; // Aim: making the buf full
size_t target = std::size(buf) - size; // Aim: making the buf full
// Compute the index we'll start writing to
size_t startIndex = (offset + size) % ARRAY_SIZE(buf);
size_t startIndex = (offset + size) % std::size(buf);
// If the range to fill passes over the buffer wrapping point, we need two reads
if (startIndex + target > ARRAY_SIZE(buf)) {
size_t nbExpectedChars = ARRAY_SIZE(buf) - startIndex;
if (startIndex + target > std::size(buf)) {
size_t nbExpectedChars = std::size(buf) - startIndex;
size_t nbReadChars = readMore(startIndex, nbExpectedChars);
startIndex += nbReadChars;
if (startIndex == ARRAY_SIZE(buf))
if (startIndex == std::size(buf))
startIndex = 0;
// If the read was incomplete, don't perform a second read
@@ -534,7 +534,7 @@ void BufferedContent::refill() {
size_t BufferedContent::readMore(size_t startIndex, size_t nbChars) {
// This buffer overflow made me lose WEEKS of my life. Never again.
assume(startIndex + nbChars <= ARRAY_SIZE(buf));
assume(startIndex + nbChars <= std::size(buf));
ssize_t nbReadChars = read(fd, &buf[startIndex], nbChars);
if (nbReadChars == -1)
@@ -720,7 +720,7 @@ int LexerState::peekChar() {
auto &cbuf = content.get<BufferedContent>();
if (cbuf.size == 0)
cbuf.refill();
assume(cbuf.offset < ARRAY_SIZE(cbuf.buf));
assume(cbuf.offset < std::size(cbuf.buf));
if (cbuf.size > 0)
return static_cast<uint8_t>(cbuf.buf[cbuf.offset]);
}
@@ -748,11 +748,11 @@ int LexerState::peekCharAhead() {
return static_cast<uint8_t>(view.span.ptr[view.offset + distance]);
} else {
auto &cbuf = content.get<BufferedContent>();
assume(distance < ARRAY_SIZE(cbuf.buf));
assume(distance < std::size(cbuf.buf));
if (cbuf.size <= distance)
cbuf.refill();
if (cbuf.size > distance)
return static_cast<uint8_t>(cbuf.buf[(cbuf.offset + distance) % ARRAY_SIZE(cbuf.buf)]);
return static_cast<uint8_t>(cbuf.buf[(cbuf.offset + distance) % std::size(cbuf.buf)]);
}
// If there aren't enough chars, give up
@@ -2339,7 +2339,7 @@ Capture lexer_CaptureRept() {
endCapture(capture);
// The final ENDR has been captured, but we don't want it!
// We know we have read exactly "ENDR", not e.g. an EQUS
capture.span.size -= QUOTEDSTRLEN("ENDR");
capture.span.size -= literal_strlen("ENDR");
return capture;
}
depth--;
@@ -2385,7 +2385,7 @@ Capture lexer_CaptureMacro() {
endCapture(capture);
// The ENDM has been captured, but we don't want it!
// We know we have read exactly "ENDM", not e.g. an EQUS
capture.span.size -= QUOTEDSTRLEN("ENDM");
capture.span.size -= literal_strlen("ENDM");
return capture;
default: