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rewrote most of the router

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This commit is contained in:
Jarred Sumner
2021-10-20 04:18:29 -07:00
parent 3dc53c3d13
commit 58b196c583
19 changed files with 1672 additions and 1412 deletions
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39
src/string_immutable.zig
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@@ -718,43 +718,30 @@ pub fn utf8ByteSequenceLength(first_byte: u8) u3 {
pub fn NewCodePointIterator(comptime CodePointType: type, comptime zeroValue: comptime_int) type {
return struct {
const Iterator = @This();
bytes: [*]const u8,
i: u32 = 0,
len: u32 = 0,
bytes: []const u8,
i: usize,
width: u3 = 0,
c: CodePointType = zeroValue,
c: CodePointType = 0,
pub fn initOffset(bytes: []const u8, offset: u32) Iterator {
return Iterator{
.bytes = bytes.ptr,
.i = offset,
.len = @truncate(u32, bytes.len),
};
pub fn init(str: string) CodepointIterator {
return CodepointIterator{ .bytes = str, .i = 0, .width = 0, .c = 0 };
}
pub inline fn isEnd(this: Iterator) bool {
return this.c == zeroValue and @minimum(this.len, this.i) >= this.len;
}
pub fn init(bytes: []const u8) Iterator {
return Iterator{
.bytes = bytes.ptr,
.i = 0,
.len = @truncate(u32, bytes.len),
};
pub fn initOffset(str: string, i: usize) CodepointIterator {
return CodepointIterator{ .bytes = str, .i = i, .width = 0, .c = 0 };
}
inline fn nextCodepointSlice(it: *Iterator) []const u8 {
@setRuntimeSafety(false);
const cp_len = utf8ByteSequenceLength(it.bytes[it.i]);
it.i = @minimum(it.i + cp_len, it.len);
it.i += cp_len;
return if (!(it.i + 1 > it.len)) it.bytes[it.i - cp_len .. it.i] else "";
return if (!(it.i > it.bytes.len)) it.bytes[it.i - cp_len .. it.i] else "";
}
pub fn needsUTF8Decoding(slice: string) bool {
var it = Iterator.init(slice);
var it = Iterator{ .bytes = slice, .i = 0 };
while (true) {
const part = it.nextCodepointSlice();
@@ -821,10 +808,6 @@ pub fn NewCodePointIterator(comptime CodePointType: type, comptime zeroValue: co
};
}
pub fn remaining(it: *Iterator) []const u8 {
return it.bytes[it.i..it.len];
}
/// Look ahead at the next n codepoints without advancing the iterator.
/// If fewer than n codepoints are available, then return the remainder of the string.
pub fn peek(it: *Iterator, n: usize) []const u8 {
@@ -834,7 +817,7 @@ pub fn NewCodePointIterator(comptime CodePointType: type, comptime zeroValue: co
var end_ix = original_i;
var found: usize = 0;
while (found < n) : (found += 1) {
const next_codepoint = it.nextCodepointSlice() orelse return it.bytes[original_i..it.len];
const next_codepoint = it.nextCodepointSlice() orelse return it.bytes[original_i..];
end_ix += next_codepoint.len;
}