From 958c13ba442e7077a50d7163fdeb9bba378f95c2 Mon Sep 17 00:00:00 2001
From: Sam Atman
Date: Wed, 30 Apr 2025 15:32:34 -0400
Subject: Rest of the Renamings

These get different names, but don't otherwise change.
---
 src/Properties.zig | 163 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 163 insertions(+)
 create mode 100644 src/Properties.zig

(limited to 'src/Properties.zig')

diff --git a/src/Properties.zig b/src/Properties.zig
new file mode 100644
index 0000000..46920be
--- /dev/null
+++ b/src/Properties.zig
@@ -0,0 +1,163 @@
+const std = @import("std");
+const builtin = @import("builtin");
+const compress = std.compress;
+const mem = std.mem;
+const testing = std.testing;
+
+core_s1: []u16 = undefined,
+core_s2: []u8 = undefined,
+props_s1: []u16 = undefined,
+props_s2: []u8 = undefined,
+num_s1: []u16 = undefined,
+num_s2: []u8 = undefined,
+
+const Self = @This();
+
+pub fn init(allocator: mem.Allocator) !Self {
+    const decompressor = compress.flate.inflate.decompressor;
+    const endian = builtin.cpu.arch.endian();
+
+    // Process DerivedCoreProperties.txt
+    const core_bytes = @embedFile("core_props");
+    var core_fbs = std.io.fixedBufferStream(core_bytes);
+    var core_decomp = decompressor(.raw, core_fbs.reader());
+    var core_reader = core_decomp.reader();
+
+    var self = Self{};
+
+    const core_stage_1_len: u16 = try core_reader.readInt(u16, endian);
+    self.core_s1 = try allocator.alloc(u16, core_stage_1_len);
+    errdefer allocator.free(self.core_s1);
+    for (0..core_stage_1_len) |i| self.core_s1[i] = try core_reader.readInt(u16, endian);
+
+    const core_stage_2_len: u16 = try core_reader.readInt(u16, endian);
+    self.core_s2 = try allocator.alloc(u8, core_stage_2_len);
+    errdefer allocator.free(self.core_s2);
+    _ = try core_reader.readAll(self.core_s2);
+
+    // Process PropList.txt
+    const props_bytes = @embedFile("props");
+    var props_fbs = std.io.fixedBufferStream(props_bytes);
+    var props_decomp = decompressor(.raw, props_fbs.reader());
+    var props_reader = props_decomp.reader();
+
+    const stage_1_len: u16 = try props_reader.readInt(u16, endian);
+    self.props_s1 = try allocator.alloc(u16, stage_1_len);
+    errdefer allocator.free(self.props_s1);
+    for (0..stage_1_len) |i| self.props_s1[i] = try props_reader.readInt(u16, endian);
+
+    const stage_2_len: u16 = try props_reader.readInt(u16, endian);
+    self.props_s2 = try allocator.alloc(u8, stage_2_len);
+    errdefer allocator.free(self.props_s2);
+    _ = try props_reader.readAll(self.props_s2);
+
+    // Process DerivedNumericType.txt
+    const num_bytes = @embedFile("numeric");
+    var num_fbs = std.io.fixedBufferStream(num_bytes);
+    var num_decomp = decompressor(.raw, num_fbs.reader());
+    var num_reader = num_decomp.reader();
+
+    const num_stage_1_len: u16 = try num_reader.readInt(u16, endian);
+    self.num_s1 = try allocator.alloc(u16, num_stage_1_len);
+    errdefer allocator.free(self.num_s1);
+    for (0..num_stage_1_len) |i| self.num_s1[i] = try num_reader.readInt(u16, endian);
+
+    const num_stage_2_len: u16 = try num_reader.readInt(u16, endian);
+    self.num_s2 = try allocator.alloc(u8, num_stage_2_len);
+    errdefer allocator.free(self.num_s2);
+    _ = try num_reader.readAll(self.num_s2);
+
+    return self;
+}
+
+pub fn deinit(self: *const Self, allocator: mem.Allocator) void {
+    allocator.free(self.core_s1);
+    allocator.free(self.core_s2);
+    allocator.free(self.props_s1);
+    allocator.free(self.props_s2);
+    allocator.free(self.num_s1);
+    allocator.free(self.num_s2);
+}
+
+/// True if `cp` is a mathematical symbol.
+pub fn isMath(self: Self, cp: u21) bool {
+    return self.core_s2[self.core_s1[cp >> 8] + (cp & 0xff)] & 1 == 1;
+}
+
+/// True if `cp` is an alphabetic character.
+pub fn isAlphabetic(self: Self, cp: u21) bool {
+    return self.core_s2[self.core_s1[cp >> 8] + (cp & 0xff)] & 2 == 2;
+}
+
+/// True if `cp` is a valid identifier start character.
+pub fn isIdStart(self: Self, cp: u21) bool {
+    return self.core_s2[self.core_s1[cp >> 8] + (cp & 0xff)] & 4 == 4;
+}
+
+/// True if `cp` is a valid identifier continuation character.
+pub fn isIdContinue(self: Self, cp: u21) bool {
+    return self.core_s2[self.core_s1[cp >> 8] + (cp & 0xff)] & 8 == 8;
+}
+
+/// True if `cp` is a valid extended identifier start character.
+pub fn isXidStart(self: Self, cp: u21) bool {
+    return self.core_s2[self.core_s1[cp >> 8] + (cp & 0xff)] & 16 == 16;
+}
+
+/// True if `cp` is a valid extended identifier continuation character.
+pub fn isXidContinue(self: Self, cp: u21) bool {
+    return self.core_s2[self.core_s1[cp >> 8] + (cp & 0xff)] & 32 == 32;
+}
+
+/// True if `cp` is a whitespace character.
+pub fn isWhitespace(self: Self, cp: u21) bool {
+    return self.props_s2[self.props_s1[cp >> 8] + (cp & 0xff)] & 1 == 1;
+}
+
+/// True if `cp` is a hexadecimal digit.
+pub fn isHexDigit(self: Self, cp: u21) bool {
+    return self.props_s2[self.props_s1[cp >> 8] + (cp & 0xff)] & 2 == 2;
+}
+
+/// True if `cp` is a diacritic mark.
+pub fn isDiacritic(self: Self, cp: u21) bool {
+    return self.props_s2[self.props_s1[cp >> 8] + (cp & 0xff)] & 4 == 4;
+}
+
+/// True if `cp` is numeric.
+pub fn isNumeric(self: Self, cp: u21) bool {
+    return self.num_s2[self.num_s1[cp >> 8] + (cp & 0xff)] & 1 == 1;
+}
+
+/// True if `cp` is a digit.
+pub fn isDigit(self: Self, cp: u21) bool {
+    return self.num_s2[self.num_s1[cp >> 8] + (cp & 0xff)] & 2 == 2;
+}
+
+/// True if `cp` is decimal.
+pub fn isDecimal(self: Self, cp: u21) bool {
+    return self.num_s2[self.num_s1[cp >> 8] + (cp & 0xff)] & 4 == 4;
+}
+
+test "Props" {
+    const self = try init(testing.allocator);
+    defer self.deinit(testing.allocator);
+
+    try testing.expect(self.isHexDigit('F'));
+    try testing.expect(self.isHexDigit('a'));
+    try testing.expect(self.isHexDigit('8'));
+    try testing.expect(!self.isHexDigit('z'));
+
+    try testing.expect(self.isDiacritic('\u{301}'));
+    try testing.expect(self.isAlphabetic('A'));
+    try testing.expect(!self.isAlphabetic('3'));
+    try testing.expect(self.isMath('+'));
+
+    try testing.expect(self.isNumeric('\u{277f}'));
+    try testing.expect(self.isDigit('\u{2070}'));
+    try testing.expect(self.isDecimal('3'));
+
+    try testing.expect(!self.isNumeric('1'));
+    try testing.expect(!self.isDigit('2'));
+    try testing.expect(!self.isDecimal('g'));
+}
-- 
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