diff --git a/licenses.txt b/licenses.txt
index 6336b470e0dc9933d1fad883c84eaf86174573d6..6c2230d095005b46d45822b684d5ca4ef1684368 100644
--- a/licenses.txt
+++ b/licenses.txt
@@ -1,3 +1,7 @@
 MIT:
 = https://spdx.org/licenses/MIT
 - This
+- git https://github.com/nektro/zig-unicode-ucd
+
+Unspecified:
+- git https://github.com/unicode-org/icu
diff --git a/src/main.zig b/src/main.zig
index 95a0b682a71942e4010a9c8ee96461fb9a3b53a3..559241f5046d9e0ba34cf58b2c2c15e2a6dd9df0 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1 +1,146 @@
 const std = @import("std");
+const icu = @import("icu");
+
+const t = @import("./types.zig");
+
+//
+//
+
+export fn u_hasBinaryProperty(cp: u32, prop: t.UProperty) bool {
+    return switch (prop) {
+        .UCHAR_ALPHABETIC => icu.hasDerivedCoreProperty(cp, .Alphabetic),
+        .UCHAR_ASCII_HEX_DIGIT => icu.hasProperty(cp, .ASCII_Hex_Digit),
+        .UCHAR_BIDI_CONTROL => icu.hasProperty(cp, .Bidi_Control),
+        .UCHAR_BIDI_MIRRORED => false, // TODO
+        .UCHAR_DASH => icu.hasProperty(cp, .Dash),
+        .UCHAR_DEFAULT_IGNORABLE_CODE_POINT => icu.hasDerivedCoreProperty(cp, .Default_Ignorable_Code_Point),
+        .UCHAR_DEPRECATED => icu.hasProperty(cp, .Deprecated),
+        .UCHAR_DIACRITIC => icu.hasProperty(cp, .Diacritic),
+        .UCHAR_EXTENDER => icu.hasProperty(cp, .Extender),
+        .UCHAR_FULL_COMPOSITION_EXCLUSION => false, // TODO
+        .UCHAR_GRAPHEME_BASE => icu.hasDerivedCoreProperty(cp, .Grapheme_Base),
+        .UCHAR_GRAPHEME_EXTEND => icu.hasDerivedCoreProperty(cp, .Grapheme_Extend),
+        .UCHAR_GRAPHEME_LINK => icu.hasDerivedCoreProperty(cp, .Grapheme_Link),
+        .UCHAR_HEX_DIGIT => icu.hasProperty(cp, .Hex_Digit),
+        .UCHAR_HYPHEN => icu.hasProperty(cp, .Hyphen),
+        .UCHAR_ID_CONTINUE => icu.hasDerivedCoreProperty(cp, .ID_Continue),
+        .UCHAR_ID_START => icu.hasDerivedCoreProperty(cp, .ID_Start),
+        .UCHAR_IDEOGRAPHIC => icu.hasProperty(cp, .Ideographic),
+        .UCHAR_IDS_BINARY_OPERATOR => icu.hasProperty(cp, .IDS_Binary_Operator),
+        .UCHAR_IDS_TRINARY_OPERATOR => icu.hasProperty(cp, .IDS_Trinary_Operator),
+        .UCHAR_JOIN_CONTROL => icu.hasProperty(cp, .Join_Control),
+        .UCHAR_LOGICAL_ORDER_EXCEPTION => icu.hasProperty(cp, .Logical_Order_Exception),
+        .UCHAR_LOWERCASE => icu.hasDerivedCoreProperty(cp, .Lowercase),
+        .UCHAR_MATH => icu.hasDerivedCoreProperty(cp, .Math),
+        .UCHAR_NONCHARACTER_CODE_POINT => icu.hasProperty(cp, .Noncharacter_Code_Point),
+        .UCHAR_QUOTATION_MARK => icu.hasProperty(cp, .Quotation_Mark),
+        .UCHAR_RADICAL => icu.hasProperty(cp, .Radical),
+        .UCHAR_SOFT_DOTTED => icu.hasProperty(cp, .Soft_Dotted),
+        .UCHAR_TERMINAL_PUNCTUATION => icu.hasProperty(cp, .Terminal_Punctuation),
+        .UCHAR_UNIFIED_IDEOGRAPH => icu.hasProperty(cp, .Unified_Ideograph),
+        .UCHAR_UPPERCASE => icu.hasDerivedCoreProperty(cp, .Uppercase),
+        .UCHAR_WHITE_SPACE => icu.hasProperty(cp, .White_Space),
+        .UCHAR_XID_CONTINUE => icu.hasDerivedCoreProperty(cp, .XID_Continue),
+        .UCHAR_XID_START => icu.hasDerivedCoreProperty(cp, .XID_Start),
+        .UCHAR_CASE_SENSITIVE => false, // TODO
+        .UCHAR_S_TERM => false, // TODO
+        .UCHAR_VARIATION_SELECTOR => false, // TODO
+        .UCHAR_NFD_INERT => false, // TODO
+        .UCHAR_NFKD_INERT => false, // TODO
+        .UCHAR_NFC_INERT => false, // TODO
+        .UCHAR_NFKC_INERT => false, // TODO
+        .UCHAR_SEGMENT_STARTER => false, // TODO
+        .UCHAR_PATTERN_SYNTAX => false, // TODO
+        .UCHAR_PATTERN_WHITE_SPACE => false, // TODO
+        .UCHAR_POSIX_ALNUM => false, // TODO
+        .UCHAR_POSIX_BLANK => false, // TODO
+        .UCHAR_POSIX_GRAPH => false, // TODO
+        .UCHAR_POSIX_PRINT => false, // TODO
+        .UCHAR_POSIX_XDIGIT => false, // TODO
+        .UCHAR_CASED => icu.hasDerivedCoreProperty(cp, .Cased),
+        .UCHAR_CASE_IGNORABLE => icu.hasDerivedCoreProperty(cp, .Case_Ignorable),
+        .UCHAR_CHANGES_WHEN_LOWERCASED => icu.hasDerivedCoreProperty(cp, .Changes_When_Lowercased),
+        .UCHAR_CHANGES_WHEN_UPPERCASED => icu.hasDerivedCoreProperty(cp, .Changes_When_Uppercased),
+        .UCHAR_CHANGES_WHEN_TITLECASED => icu.hasDerivedCoreProperty(cp, .Changes_When_Titlecased),
+        .UCHAR_CHANGES_WHEN_CASEFOLDED => icu.hasDerivedCoreProperty(cp, .Changes_When_Casefolded),
+        .UCHAR_CHANGES_WHEN_CASEMAPPED => icu.hasDerivedCoreProperty(cp, .Changes_When_Casemapped),
+        .UCHAR_CHANGES_WHEN_NFKC_CASEFOLDED => false, // TODO
+        .UCHAR_EMOJI => false, // TODO
+        .UCHAR_EMOJI_PRESENTATION => false, // TODO
+        .UCHAR_EMOJI_MODIFIER => false, // TODO
+        .UCHAR_EMOJI_MODIFIER_BASE => false, // TODO
+        .UCHAR_EMOJI_COMPONENT => false, // TODO
+        .UCHAR_REGIONAL_INDICATOR => icu.hasProperty(cp, .Regional_Indicator),
+        .UCHAR_PREPENDED_CONCATENATION_MARK => false, // TODO
+        .UCHAR_EXTENDED_PICTOGRAPHIC => false, // TODO
+        .UCHAR_BASIC_EMOJI => false, // TODO
+        .UCHAR_EMOJI_KEYCAP_SEQUENCE => false, // TODO
+        .UCHAR_RGI_EMOJI_MODIFIER_SEQUENCE => false, // TODO
+        .UCHAR_RGI_EMOJI_FLAG_SEQUENCE => false, // TODO
+        .UCHAR_RGI_EMOJI_TAG_SEQUENCE => false, // TODO
+        .UCHAR_RGI_EMOJI_ZWJ_SEQUENCE => false, // TODO
+        .UCHAR_RGI_EMOJI => false, // TODO
+        .UCHAR_IDS_UNARY_OPERATOR => false, // TODO
+        .UCHAR_ID_COMPAT_MATH_START => icu.hasProperty(cp, .ID_Compat_Math_Start),
+        .UCHAR_ID_COMPAT_MATH_CONTINUE => icu.hasProperty(cp, .ID_Compat_Math_Continue),
+        .UCHAR_BIDI_CLASS => false, // TODO
+        .UCHAR_BLOCK => false, // TODO
+        .UCHAR_CANONICAL_COMBINING_CLASS => false, // TODO
+        .UCHAR_DECOMPOSITION_TYPE => false, // TODO
+        .UCHAR_EAST_ASIAN_WIDTH => false, // TODO
+        .UCHAR_GENERAL_CATEGORY => false, // TODO
+        .UCHAR_JOINING_GROUP => false, // TODO
+        .UCHAR_JOINING_TYPE => false, // TODO
+        .UCHAR_LINE_BREAK => false, // TODO
+        .UCHAR_NUMERIC_TYPE => false, // TODO
+        .UCHAR_SCRIPT => false, // TODO
+        .UCHAR_HANGUL_SYLLABLE_TYPE => false, // TODO
+        .UCHAR_NFD_QUICK_CHECK => false, // TODO
+        .UCHAR_NFKD_QUICK_CHECK => false, // TODO
+        .UCHAR_NFC_QUICK_CHECK => false, // TODO
+        .UCHAR_NFKC_QUICK_CHECK => false, // TODO
+        .UCHAR_LEAD_CANONICAL_COMBINING_CLASS => false, // TODO
+        .UCHAR_TRAIL_CANONICAL_COMBINING_CLASS => false, // TODO
+        .UCHAR_GRAPHEME_CLUSTER_BREAK => false, // TODO
+        .UCHAR_SENTENCE_BREAK => false, // TODO
+        .UCHAR_WORD_BREAK => false, // TODO
+        .UCHAR_BIDI_PAIRED_BRACKET_TYPE => false, // TODO
+        .UCHAR_INDIC_POSITIONAL_CATEGORY => false, // TODO
+        .UCHAR_INDIC_SYLLABIC_CATEGORY => false, // TODO
+        .UCHAR_VERTICAL_ORIENTATION => false, // TODO
+        .UCHAR_GENERAL_CATEGORY_MASK => false, // TODO
+        .UCHAR_NUMERIC_VALUE => false, // TODO
+        .UCHAR_AGE => false, // TODO
+        .UCHAR_BIDI_MIRRORING_GLYPH => false, // TODO
+        .UCHAR_CASE_FOLDING => false, // TODO
+        .UCHAR_LOWERCASE_MAPPING => false, // TODO
+        .UCHAR_NAME => false, // TODO
+        .UCHAR_SIMPLE_CASE_FOLDING => false, // TODO
+        .UCHAR_SIMPLE_LOWERCASE_MAPPING => false, // TODO
+        .UCHAR_SIMPLE_TITLECASE_MAPPING => false, // TODO
+        .UCHAR_SIMPLE_UPPERCASE_MAPPING => false, // TODO
+        .UCHAR_TITLECASE_MAPPING => false, // TODO
+        .UCHAR_UPPERCASE_MAPPING => false, // TODO
+        .UCHAR_BIDI_PAIRED_BRACKET => false, // TODO
+        .UCHAR_SCRIPT_EXTENSIONS => false, // TODO
+        _ => false,
+
+        // InCB,
+
+        // Other_Math,
+        // Other_Alphabetic,
+        // Other_Lowercase,
+        // Other_Uppercase,
+        // Other_Grapheme_Extend,
+        // Other_Default_Ignorable_Code_Point,
+        // Other_ID_Start,
+        // Other_ID_Continue,
+        // Sentence_Terminal,
+        // Variation_Selector,
+        // Pattern_White_Space,
+        // Pattern_Syntax,
+        // Prepended_Concatenation_Mark,
+        // IDS_Unary_Operator,
+        // Modifier_Combining_Mark,
+    };
+}
diff --git a/src/root.zig b/src/root.zig
index 95a0b682a71942e4010a9c8ee96461fb9a3b53a3..57413d1572412e255a5b5741f030991cb454f043 100644
--- a/src/root.zig
+++ b/src/root.zig
@@ -1 +1,26 @@
 const std = @import("std");
+const unicodeucd = @import("unicode-ucd");
+
+pub fn hasDerivedCoreProperty(cp: u32, comptime prop: unicodeucd.derived_core_properties.CoreProperty.Property) bool {
+    @setEvalBranchQuota(100_000);
+    inline for (unicodeucd.derived_core_properties.data) |item| {
+        if (item.property == prop) {
+            if (cp >= item.from and cp <= item.to) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+pub fn hasProperty(cp: u32, comptime prop: unicodeucd.prop_list.PropList.Property) bool {
+    @setEvalBranchQuota(100_000);
+    inline for (unicodeucd.prop_list.data) |item| {
+        if (item.property == prop) {
+            if (cp >= item.from and cp <= item.to) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
diff --git a/src/types.zig b/src/types.zig
new file mode 100644
index 0000000000000000000000000000000000000000..935ee64b739dd4794278e0b66569d5f170c8a4d9
--- /dev/null
+++ b/src/types.zig
@@ -0,0 +1,131 @@
+pub const UProperty = enum(c_uint) {
+    UCHAR_ALPHABETIC = 0,
+    UCHAR_ASCII_HEX_DIGIT = 1,
+    UCHAR_BIDI_CONTROL = 2,
+    UCHAR_BIDI_MIRRORED = 3,
+    UCHAR_DASH = 4,
+    UCHAR_DEFAULT_IGNORABLE_CODE_POINT = 5,
+    UCHAR_DEPRECATED = 6,
+    UCHAR_DIACRITIC = 7,
+    UCHAR_EXTENDER = 8,
+    UCHAR_FULL_COMPOSITION_EXCLUSION = 9,
+    UCHAR_GRAPHEME_BASE = 10,
+    UCHAR_GRAPHEME_EXTEND = 11,
+    UCHAR_GRAPHEME_LINK = 12,
+    UCHAR_HEX_DIGIT = 13,
+    UCHAR_HYPHEN = 14,
+    UCHAR_ID_CONTINUE = 15,
+    UCHAR_ID_START = 16,
+    UCHAR_IDEOGRAPHIC = 17,
+    UCHAR_IDS_BINARY_OPERATOR = 18,
+    UCHAR_IDS_TRINARY_OPERATOR = 19,
+    UCHAR_JOIN_CONTROL = 20,
+    UCHAR_LOGICAL_ORDER_EXCEPTION = 21,
+    UCHAR_LOWERCASE = 22,
+    UCHAR_MATH = 23,
+    UCHAR_NONCHARACTER_CODE_POINT = 24,
+    UCHAR_QUOTATION_MARK = 25,
+    UCHAR_RADICAL = 26,
+    UCHAR_SOFT_DOTTED = 27,
+    UCHAR_TERMINAL_PUNCTUATION = 28,
+    UCHAR_UNIFIED_IDEOGRAPH = 29,
+    UCHAR_UPPERCASE = 30,
+    UCHAR_WHITE_SPACE = 31,
+    UCHAR_XID_CONTINUE = 32,
+    UCHAR_XID_START = 33,
+    UCHAR_CASE_SENSITIVE = 34,
+    UCHAR_S_TERM = 35,
+    UCHAR_VARIATION_SELECTOR = 36,
+    UCHAR_NFD_INERT = 37,
+    UCHAR_NFKD_INERT = 38,
+    UCHAR_NFC_INERT = 39,
+    UCHAR_NFKC_INERT = 40,
+    UCHAR_SEGMENT_STARTER = 41,
+    UCHAR_PATTERN_SYNTAX = 42,
+    UCHAR_PATTERN_WHITE_SPACE = 43,
+    UCHAR_POSIX_ALNUM = 44,
+    UCHAR_POSIX_BLANK = 45,
+    UCHAR_POSIX_GRAPH = 46,
+    UCHAR_POSIX_PRINT = 47,
+    UCHAR_POSIX_XDIGIT = 48,
+    UCHAR_CASED = 49,
+    UCHAR_CASE_IGNORABLE = 50,
+    UCHAR_CHANGES_WHEN_LOWERCASED = 51,
+    UCHAR_CHANGES_WHEN_UPPERCASED = 52,
+    UCHAR_CHANGES_WHEN_TITLECASED = 53,
+    UCHAR_CHANGES_WHEN_CASEFOLDED = 54,
+    UCHAR_CHANGES_WHEN_CASEMAPPED = 55,
+    UCHAR_CHANGES_WHEN_NFKC_CASEFOLDED = 56,
+    UCHAR_EMOJI = 57,
+    UCHAR_EMOJI_PRESENTATION = 58,
+    UCHAR_EMOJI_MODIFIER = 59,
+    UCHAR_EMOJI_MODIFIER_BASE = 60,
+    UCHAR_EMOJI_COMPONENT = 61,
+    UCHAR_REGIONAL_INDICATOR = 62,
+    UCHAR_PREPENDED_CONCATENATION_MARK = 63,
+    UCHAR_EXTENDED_PICTOGRAPHIC = 64,
+    UCHAR_BASIC_EMOJI = 65,
+    UCHAR_EMOJI_KEYCAP_SEQUENCE = 66,
+    UCHAR_RGI_EMOJI_MODIFIER_SEQUENCE = 67,
+    UCHAR_RGI_EMOJI_FLAG_SEQUENCE = 68,
+    UCHAR_RGI_EMOJI_TAG_SEQUENCE = 69,
+    UCHAR_RGI_EMOJI_ZWJ_SEQUENCE = 70,
+    UCHAR_RGI_EMOJI = 71,
+    UCHAR_IDS_UNARY_OPERATOR = 72,
+    UCHAR_ID_COMPAT_MATH_START = 73,
+    UCHAR_ID_COMPAT_MATH_CONTINUE = 74,
+
+    UCHAR_BIDI_CLASS = 0x1000,
+    UCHAR_BLOCK = 0x1001,
+    UCHAR_CANONICAL_COMBINING_CLASS = 0x1002,
+    UCHAR_DECOMPOSITION_TYPE = 0x1003,
+    UCHAR_EAST_ASIAN_WIDTH = 0x1004,
+    UCHAR_GENERAL_CATEGORY = 0x1005,
+    UCHAR_JOINING_GROUP = 0x1006,
+    UCHAR_JOINING_TYPE = 0x1007,
+    UCHAR_LINE_BREAK = 0x1008,
+    UCHAR_NUMERIC_TYPE = 0x1009,
+    UCHAR_SCRIPT = 0x100A,
+    UCHAR_HANGUL_SYLLABLE_TYPE = 0x100B,
+    UCHAR_NFD_QUICK_CHECK = 0x100C,
+    UCHAR_NFKD_QUICK_CHECK = 0x100D,
+    UCHAR_NFC_QUICK_CHECK = 0x100E,
+    UCHAR_NFKC_QUICK_CHECK = 0x100F,
+    UCHAR_LEAD_CANONICAL_COMBINING_CLASS = 0x1010,
+    UCHAR_TRAIL_CANONICAL_COMBINING_CLASS = 0x1011,
+    UCHAR_GRAPHEME_CLUSTER_BREAK = 0x1012,
+    UCHAR_SENTENCE_BREAK = 0x1013,
+    UCHAR_WORD_BREAK = 0x1014,
+    UCHAR_BIDI_PAIRED_BRACKET_TYPE = 0x1015,
+    UCHAR_INDIC_POSITIONAL_CATEGORY = 0x1016,
+    UCHAR_INDIC_SYLLABIC_CATEGORY = 0x1017,
+    UCHAR_VERTICAL_ORIENTATION = 0x1018,
+
+    UCHAR_GENERAL_CATEGORY_MASK = 0x2000,
+
+    UCHAR_NUMERIC_VALUE = 0x3000,
+
+    UCHAR_AGE = 0x4000,
+    UCHAR_BIDI_MIRRORING_GLYPH = 0x4001,
+    UCHAR_CASE_FOLDING = 0x4002,
+    UCHAR_LOWERCASE_MAPPING = 0x4004,
+    UCHAR_NAME = 0x4005,
+    UCHAR_SIMPLE_CASE_FOLDING = 0x4006,
+    UCHAR_SIMPLE_LOWERCASE_MAPPING = 0x4007,
+    UCHAR_SIMPLE_TITLECASE_MAPPING = 0x4008,
+    UCHAR_SIMPLE_UPPERCASE_MAPPING = 0x4009,
+    UCHAR_TITLECASE_MAPPING = 0x400A,
+    UCHAR_UPPERCASE_MAPPING = 0x400C,
+    UCHAR_BIDI_PAIRED_BRACKET = 0x400D,
+
+    UCHAR_SCRIPT_EXTENSIONS = 0x7000,
+
+    _,
+
+    const UCHAR_BINARY_START: UProperty = .UCHAR_ALPHABETIC;
+    const UCHAR_INT_START: UProperty = .UCHAR_BIDI_CLASS;
+    const UCHAR_MASK_START: UProperty = .UCHAR_GENERAL_CATEGORY_MASK;
+    const UCHAR_DOUBLE_START: UProperty = .UCHAR_NUMERIC_VALUE;
+    const UCHAR_STRING_START: UProperty = .UCHAR_AGE;
+    const UCHAR_OTHER_PROPERTY_START: UProperty = .UCHAR_SCRIPT_EXTENSIONS;
+};
diff --git a/zigmod.yml b/zigmod.yml
index 4741bbbe9f74447572c4e07f5c58af067d80097b..1636b3dd3468edd3f978a22d2cf3b7acd0303171 100644
--- a/zigmod.yml
+++ b/zigmod.yml
@@ -4,3 +4,7 @@ main: src/root.zig
 license: MIT
 description: An implementation of International Components for Unicode in only Zig
 dependencies:
+  - src: git https://github.com/nektro/zig-unicode-ucd
+  - src: git https://github.com/unicode-org/icu
+    id: w3gat1zdicytwwvxn7rqgs0a9wgv7om530itr1t7
+    keep: true