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Format code attribute exception table

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ktkk 2026-07-05 16:05:46 +02:00
parent 0fbdea320c
commit 6971dce705
1 changed files with 43 additions and 10 deletions
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53
src/Class/AttributeInfo.zig
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@ -308,18 +308,18 @@ pub const AttributeInfo = union(enum) {
try w.print("{d}: 0x{x}\n", .{ i, instr }); try w.print("{d}: 0x{x}\n", .{ i, instr });
} }
//try w.splatByteAll(' ', depth * indent); try w.splatByteAll(' ', depth * indent);
//_ = try w.write("exception_table:\n"); _ = try w.write("exception_table:\n");
//var exception_indent = indent; var exception_indent = indent;
//for (attr.exception_table, 0..) |*exception, i| { for (attr.exception_table, 0..) |*exception, i| {
// exception_indent += 1; exception_indent += 1;
// defer exception_indent -= 1; defer exception_indent -= 1;
// try w.splatByteAll(' ', depth * exception_indent); try w.splatByteAll(' ', depth * exception_indent);
// try w.print("{d}:\n", .{ i }); try w.print("{d}:\n", .{ i });
// try self.formatExceptionHandler(w, depth, exception_indent + 1, exception); try exception.indentedFormat(w, depth, exception_indent + 1, constant_pool);
//} }
try w.splatByteAll(' ', depth * indent); try w.splatByteAll(' ', depth * indent);
_ = try w.write("attributes:\n"); _ = try w.write("attributes:\n");
@ -569,6 +569,39 @@ pub const Code = struct {
end_pc: u16, end_pc: u16,
handler_pc: u16, handler_pc: u16,
catch_type: u16, catch_type: u16,
pub fn indentedFormat(
self: *const ExceptionHandler,
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("end_pc: {d}\n", .{ self.end_pc });
try w.splatByteAll(' ', depth * indent);
try w.print("handler_pc: {d}\n", .{ self.handler_pc });
const catch_type = self.catchType(constant_pool) catch return error.WriteFailed;
if (catch_type) |ct| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("catch_type:\n");
try ct.indentedFormat(w, depth, indent + 1, constant_pool);
}
}
pub fn catchType(self: *const ExceptionHandler, constant_pool: []const ?ConstantPoolInfo) ResolveError!?ConstantPoolInfo {
if (self.catch_type == 0) return null;
const catch_type = self.catch_type - 1;
if (catch_type >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[catch_type];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
}; };
pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo, allocator: std.mem.Allocator) (ParseError || ResolveError)!Self { pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo, allocator: std.mem.Allocator) (ParseError || ResolveError)!Self {