mainly theoratical work on semi, add regex sample

2026-07-22 18:17:10 +08:00
parent c82a758d97
commit c1a8b39502
2 changed files with 58 additions and 3 deletions
@@ -0,0 +1,55 @@
+using System;
+
+//abc
+static void Match_ABC(ReadOnlySpan<char> input)
+{
+    int ptr = 0;
+    int region_start = ptr;
+    int region_end = region_start;
+
+    const string pattern = @"abc";
+    if(input[0..3].SequenceEqual(pattern))
+    {
+        ptr += 3;
+        region_end = ptr;
+    }
+}
+
+//a[abc]d
+static void Match_A_charset_ABC_C(ReadOnlySpan<char> input)
+{
+    int ptr = 0;
+    int region_start = ptr;
+    int region_end = region_start;
+
+    if(input[0] == 'a' && (input[1] == 'a' || input[1] == 'b' || input[1] == 'c') && input[2] == 'd')
+    {
+        ptr += 3;
+        region_end = ptr;
+    }
+}
+
+//[abc]
+static void Match_charset_ABC(ReadOnlySpan<char> input)
+{
+    int ptr = 0;
+    int region_start = ptr;
+    int region_end = region_start;
+
+    if(input[0] == 'a' || input[0] == 'b' || input[0] == 'c')
+    {
+        ptr += 1;
+        region_end = ptr;
+    }
+}
+
+//.
+static void Match_Dot(ReadOnlySpan<char> input)
+{
+    int ptr = 0;
+    int region_start = ptr;
+    int region_end = region_start;
+
+        ptr += 1;
+        region_end = ptr;
+}