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//! Crimson formatting utilities
pub fn u32_decimal(value: u32, buffer: []u8) usize {
if (buffer.len == 0) return 0;
var temp: [10]u8 = undefined;
var temp_pos: usize = 0;
var val = value;
if (val == 0) {
buffer[0] = '0';
return 1;
}
while (val > 0 and temp_pos < 10) {
temp[temp_pos] = @as(u8, @truncate(val % 10)) + '0';
val /= 10;
temp_pos += 1;
}
var pos: usize = 0;
while (temp_pos > 0 and pos < buffer.len) {
temp_pos -= 1;
buffer[pos] = temp[temp_pos];
pos += 1;
}
return pos;
}
pub fn u64_hex(value: u64, buffer: []u8) usize {
const hex = "0123456789ABCDEF";
var shift: u6 = 60;
var pos: usize = 0;
while (pos < 16 and pos < buffer.len) : (pos += 1) {
const nibble = @as(u8, @truncate((value >> shift) & 0xF));
buffer[pos] = hex[nibble];
if (shift >= 4) {
shift -= 4;
}
}
return pos;
}
pub fn register(label: []const u8, value: u64, buffer: []u8) []const u8 {
var pos: usize = 0;
for (label) |c| {
if (pos < buffer.len) {
buffer[pos] = c;
pos += 1;
}
}
if (pos < buffer.len) {
buffer[pos] = ':';
pos += 1;
}
if (pos < buffer.len) {
buffer[pos] = ' ';
pos += 1;
}
pos += u64_hex(value, buffer[pos..]);
return buffer[0..pos];
}
pub fn stack_frame(num: usize, addr: u64, buffer: []u8) []const u8 {
var pos: usize = 0;
if (pos < buffer.len) {
buffer[pos] = '#';
pos += 1;
}
pos += u32_decimal(@truncate(num), buffer[pos..]);
if (pos < buffer.len) {
buffer[pos] = ' ';
pos += 1;
}
pos += u64_hex(addr, buffer[pos..]);
return buffer[0..pos];
}
pub fn assert_message(condition: []const u8, file: []const u8, line: u32, buffer: []u8) []const u8 {
var pos: usize = 0;
const prefix = "Assertion failed: ";
for (prefix) |c| {
if (pos < buffer.len) {
buffer[pos] = c;
pos += 1;
}
}
for (condition) |c| {
if (pos < buffer.len) {
buffer[pos] = c;
pos += 1;
}
}
const at_str = " at ";
for (at_str) |c| {
if (pos < buffer.len) {
buffer[pos] = c;
pos += 1;
}
}
for (file) |c| {
if (pos < buffer.len) {
buffer[pos] = c;
pos += 1;
}
}
if (pos < buffer.len) {
buffer[pos] = ':';
pos += 1;
}
pos += u32_decimal(line, buffer[pos..]);
return buffer[0..pos];
}
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