From b8c63f726eda7b9cfe740a2a2249e1e7813d7b1f Mon Sep 17 00:00:00 2001
From: ktkk <dezuttereluka@gmail.com>
Date: Sun, 5 Jul 2026 20:17:10 +0200
Subject: [PATCH] Format local variable table attribute

---
 src/Class/AttributeInfo.zig | 55 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 54 insertions(+), 1 deletion(-)

diff --git a/src/Class/AttributeInfo.zig b/src/Class/AttributeInfo.zig
index f7a8e59..3403136 100644
--- a/src/Class/AttributeInfo.zig
+++ b/src/Class/AttributeInfo.zig
@@ -411,7 +411,20 @@ pub const AttributeInfo = union(enum) {
                             try line_number.indentedFormat(w, depth, line_number_indent + 1);
                         }
                     },
-                    //.local_variable_table,
+                    .local_variable_table => |attr| {
+                        try w.splatByteAll(' ', depth * indent);
+                        _ = try w.write("local_variable_table:\n");
+                        var local_variable_indent = indent;
+                        for (attr.local_variable_table, 0..) |*local_variable, i| {
+                            local_variable_indent += 1;
+                            defer local_variable_indent -= 1;
+
+                            try w.splatByteAll(' ', depth * local_variable_indent);
+                            try w.print("{d}:\n", .{ i });
+
+                            try local_variable.indentedFormat(w, depth, local_variable_indent + 1, constant_pool);
+                        }
+                    },
                     //.local_variable_type_table,
                     .deprecated => {},
                     //.runtime_visible_annotations,
@@ -1128,6 +1141,46 @@ pub const LocalVariableTable = struct {
         name_index: u16,
         descriptor_index: u16,
         index: u16,
+
+        pub fn indentedFormat(
+            self: *const LocalVariable,
+            w: *std.Io.Writer,
+            depth: usize,
+            indent: u8,
+            constant_pool: []const ?ConstantPoolInfo,
+        ) std.Io.Writer.Error!void {
+            try w.splatByteAll(' ', depth * indent);
+            try w.print("start_pc: {d}\n", .{ self.start_pc });
+
+            try w.splatByteAll(' ', depth * indent);
+            try w.print("length: {d}\n", .{ self.length });
+
+            const name_ = self.name(constant_pool) catch return error.WriteFailed;
+            try w.splatByteAll(' ', depth * indent);
+            _ = try w.write("name:\n");
+            try name_.indentedFormat(w, depth, indent + 1, constant_pool);
+
+            const descriptor_ = self.descriptor(constant_pool) catch return error.WriteFailed;
+            try w.splatByteAll(' ', depth * indent);
+            _ = try w.write("descriptor:\n");
+            try descriptor_.indentedFormat(w, depth, indent + 1, constant_pool);
+        }
+
+        pub fn name(self: *const LocalVariable, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
+            const name_index = self.name_index - 1;
+            if (name_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
+            const cp_info = constant_pool[name_index];
+            if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
+            return cp_info.?;
+        }
+
+        pub fn descriptor(self: *const LocalVariable, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
+            const descriptor_index = self.descriptor_index - 1;
+            if (descriptor_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
+            const cp_info = constant_pool[descriptor_index];
+            if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
+            return cp_info.?;
+        }
     };
 
     pub fn parse(input: *std.Io.Reader, allocator: std.mem.Allocator) ParseError!Self {