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Refactor constant pool

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This commit is contained in:
ktkk 2026-07-05 21:28:53 +02:00
parent 04cf7663af
commit 9135e95dbd
5 changed files with 689 additions and 659 deletions
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577
src/Class.zig
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@ -5,13 +5,14 @@ const EnumFlags = @import("EnumFlags.zig").EnumFlags;
pub const FieldInfo = @import("Class/FieldInfo.zig");
pub const MethodInfo = @import("Class/MethodInfo.zig");
pub const AttributeInfo = @import("Class/AttributeInfo.zig").AttributeInfo;
pub const ConstantPool = @import("Class/ConstantPool.zig");
allocator: std.mem.Allocator,
magic: u32,
minor_version: u16,
major_version: u16,
constant_pool: []?ConstantPoolInfo,
constant_pool: []?ConstantPool.Info,
access_flags: ClassAccessFlags,
this_class: u16,
super_class: u16,
@ -109,16 +110,16 @@ pub fn parse(input: *std.Io.Reader, allocator: std.mem.Allocator) (ParseError ||
};
}
fn parseConstantPool(input: *std.Io.Reader, allocator: std.mem.Allocator) ParseError![]?ConstantPoolInfo {
fn parseConstantPool(input: *std.Io.Reader, allocator: std.mem.Allocator) ParseError![]?ConstantPool.Info {
const constant_pool_size = try input.takeInt(u16, .big);
const constant_pool = try allocator.alloc(?ConstantPoolInfo, constant_pool_size - 1);
const constant_pool = try allocator.alloc(?ConstantPool.Info, constant_pool_size - 1);
errdefer allocator.free(constant_pool);
var i: usize = 0;
while (i < constant_pool_size - 1) {
defer i += 1;
const cp_info = try ConstantPoolInfo.parse(input, allocator);
const cp_info = try ConstantPool.Info.parse(input, allocator);
constant_pool[i] = cp_info;
switch (cp_info) {
@ -145,7 +146,7 @@ fn parseInterfaces(input: *std.Io.Reader, allocator: std.mem.Allocator) ParseErr
return interfaces;
}
fn parseFields(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo, allocator: std.mem.Allocator) (ParseError || ResolveError)![]FieldInfo {
fn parseFields(input: *std.Io.Reader, constant_pool: []const ?ConstantPool.Info, allocator: std.mem.Allocator) (ParseError || ResolveError)![]FieldInfo {
const fields_count = try input.takeInt(u16, .big);
const fields = try allocator.alloc(FieldInfo, fields_count);
errdefer allocator.free(fields);
@ -157,7 +158,7 @@ fn parseFields(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo,
return fields;
}
fn parseMethods(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo, allocator: std.mem.Allocator) (ParseError || ResolveError)![]MethodInfo {
fn parseMethods(input: *std.Io.Reader, constant_pool: []const ?ConstantPool.Info, allocator: std.mem.Allocator) (ParseError || ResolveError)![]MethodInfo {
const methods_count = try input.takeInt(u16, .big);
const methods = try allocator.alloc(MethodInfo, methods_count);
errdefer allocator.free(methods);
@ -169,7 +170,7 @@ fn parseMethods(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo,
return methods;
}
pub fn parseAttributes(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo, allocator: std.mem.Allocator) (ParseError || ResolveError)![]AttributeInfo {
pub fn parseAttributes(input: *std.Io.Reader, constant_pool: []const ?ConstantPool.Info, allocator: std.mem.Allocator) (ParseError || ResolveError)![]AttributeInfo {
const attributes_count = try input.takeInt(u16, .big);
const attributes = try allocator.alloc(AttributeInfo, attributes_count);
errdefer allocator.free(attributes);
@ -259,7 +260,7 @@ pub fn format(self: *const Self, w: *std.Io.Writer) std.Io.Writer.Error!void {
if (interface >= self.constant_pool.len) return error.WriteFailed;
const cp_info = self.constant_pool[interface - 1];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return error.WriteFailed;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return error.WriteFailed;
try w.splatByteAll(' ', depth * indent);
try w.print("{d}:\n", .{ i });
@ -297,15 +298,15 @@ pub fn format(self: *const Self, w: *std.Io.Writer) std.Io.Writer.Error!void {
}
}
pub fn thisClass(self: *const Self) ResolveError!ConstantPoolInfo {
pub fn thisClass(self: *const Self) ResolveError!ConstantPool.Info {
const this_class = self.this_class - 1;
if (this_class >= self.constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = self.constant_pool[this_class];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn superClass(self: *const Self) ResolveError!?ConstantPoolInfo {
pub fn superClass(self: *const Self) ResolveError!?ConstantPool.Info {
if (self.super_class == 0) {
const this_class = (try self.thisClass()).class;
const this_class_name = (try this_class.name(self.constant_pool)).utf8;
@ -315,7 +316,7 @@ pub fn superClass(self: *const Self) ResolveError!?ConstantPoolInfo {
const super_class = self.super_class - 1;
if (super_class >= self.constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = self.constant_pool[super_class];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
if (self.access_flags.contains(.interface)) {
const super_class_name = (try cp_info.?.class.name(self.constant_pool)).utf8;
@ -326,555 +327,3 @@ pub fn superClass(self: *const Self) ResolveError!?ConstantPoolInfo {
return cp_info.?;
}
}
pub const ConstantPoolInfo = union(ConstantPoolInfo.Tag) {
class: Class,
field_ref: FieldRef,
method_ref: MethodRef,
interface_method_ref: InterfaceMethodRef,
string: String,
integer: Integer,
float: Float,
long: Long,
double: Double,
name_and_type: NameAndType,
utf8: Utf8,
method_handle: MethodHandle,
method_type: MethodType,
dynamic: Dynamic,
invoke_dynamic: InvokeDynamic,
module: Module,
package: Package,
pub const Tag = enum(u8) {
class = 7,
field_ref = 9,
method_ref = 10,
interface_method_ref = 11,
string = 8,
integer = 3,
float = 4,
long = 5,
double = 6,
name_and_type = 12,
utf8 = 1,
method_handle = 15,
method_type = 16,
dynamic = 17,
invoke_dynamic = 18,
module = 19,
package = 20,
pub fn loadable(self: Tag) bool {
return switch (self) {
.integer, .float, .long, .double, .class, .string, .method_handle, .method_type, .dynamic => true,
else => false,
};
}
};
pub const Class = struct {
name_index: u16,
pub fn name(self: *const Class, 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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const FieldRef = struct {
class_index: u16,
name_and_type_index: u16,
pub fn class(self: *const FieldRef, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const class_index = self.class_index - 1;
if (class_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[class_index];
if (cp_info == null or @as(Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn nameAndType(self: *const FieldRef, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const MethodRef = struct {
class_index: u16,
name_and_type_index: u16,
pub fn class(self: *const MethodRef, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const class_index = self.class_index - 1;
if (class_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[class_index];
if (cp_info == null or @as(Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn nameAndType(self: *const MethodRef, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const InterfaceMethodRef = struct {
class_index: u16,
name_and_type_index: u16,
pub fn class(self: *const InterfaceMethodRef, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const class_index = self.class_index - 1;
if (class_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[class_index];
if (cp_info == null or @as(Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn nameAndType(self: *const InterfaceMethodRef, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const String = struct {
string_index: u16,
pub fn string(self: *const String, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const string_index = self.string_index - 1;
if (string_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[string_index];
if (cp_info == null or @as(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Integer = struct {
bytes: u32,
};
pub const Float = struct {
bytes: u32,
};
pub const Long = struct {
high_bytes: u32,
low_bytes: u32,
};
pub const Double = struct {
high_bytes: u32,
low_bytes: u32,
};
pub const NameAndType = struct {
name_index: u16,
descriptor_index: u16,
pub fn name(self: *const NameAndType, 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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn descriptor(self: *const NameAndType, 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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Utf8 = struct {
bytes: []const u8,
};
pub const MethodHandle = struct {
reference_kind: Kind,
reference_index: u16,
pub const Kind = enum(u8) {
get_field = 1,
get_static = 2,
put_field = 3,
put_static = 4,
invoke_virtual = 5,
invoke_static = 6,
invoke_special = 7,
new_invoke_special = 8,
invoke_interface = 9,
};
pub fn reference(self: *const MethodHandle, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const reference_index = self.reference_index - 1;
if (reference_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[reference_index];
return switch (self.reference_kind) {
.get_field, .get_static, .put_field, .put_static => blk: {
if (cp_info == null or @as(Tag, cp_info.?) != .field_ref) break :blk ResolveError.InvalidConstantType;
break :blk cp_info.?;
},
.invoke_virtual, .invoke_static, .invoke_special, .new_invoke_special => blk: {
if (cp_info == null or @as(Tag, cp_info.?) != .method_ref) break :blk ResolveError.InvalidConstantType;
break :blk cp_info.?;
},
.invoke_interface => blk: {
if (cp_info == null or @as(Tag, cp_info.?) != .interface_method_ref) break :blk ResolveError.InvalidConstantType;
break :blk cp_info.?;
},
};
}
};
pub const MethodType = struct {
descriptor_index: u16,
pub fn descriptor(self: *const MethodType, 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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Dynamic = struct {
bootstrap_method_attr_index: u16,
name_and_type_index: u16,
pub fn nameAndType(self: *const Dynamic, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const InvokeDynamic = struct {
bootstrap_method_attr_index: u16,
name_and_type_index: u16,
pub fn nameAndType(self: *const InvokeDynamic, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Module = struct {
name_index: u16,
pub fn name(self: *const Module, 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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Package = struct {
name_index: u16,
pub fn name(self: *const Package, 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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub fn parse(input: *std.Io.Reader, allocator: std.mem.Allocator) ParseError!ConstantPoolInfo {
const tag_byte = try input.takeByte();
const tag = std.enums.fromInt(Tag, tag_byte) orelse return ParseError.InvalidTag;
return switch (tag) {
.class => .{
.class = .{
.name_index = try input.takeInt(u16, .big),
},
},
.field_ref => .{
.field_ref = .{
.class_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.method_ref => .{
.method_ref = .{
.class_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.interface_method_ref => .{
.interface_method_ref = .{
.class_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.string => .{
.string = .{
.string_index = try input.takeInt(u16, .big),
},
},
.integer => .{
.integer = .{
.bytes = try input.takeInt(u32, .big),
},
},
.float => .{
.integer = .{
.bytes = try input.takeInt(u32, .big),
},
},
.long => .{
.long = .{
.high_bytes = try input.takeInt(u32, .big),
.low_bytes = try input.takeInt(u32, .big),
},
},
.double => .{
.double = .{
.high_bytes = try input.takeInt(u32, .big),
.low_bytes = try input.takeInt(u32, .big),
},
},
.name_and_type => .{
.name_and_type = .{
.name_index = try input.takeInt(u16, .big),
.descriptor_index = try input.takeInt(u16, .big),
},
},
.utf8 => blk: {
const length = try input.takeInt(u16, .big);
const bytes = try input.readAlloc(allocator, length);
break :blk .{
.utf8 = .{
.bytes = bytes,
},
};
},
.method_handle => blk: {
const kind_byte = try input.takeByte();
const kind = std.enums.fromInt(MethodHandle.Kind, kind_byte) orelse return ParseError.InvalidTag;
break :blk .{
.method_handle = .{
.reference_kind = kind,
.reference_index = try input.takeInt(u16, .big),
},
};
},
.method_type => .{
.method_type = .{
.descriptor_index = try input.takeInt(u16, .big),
},
},
.dynamic => .{
.dynamic = .{
.bootstrap_method_attr_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.invoke_dynamic => .{
.invoke_dynamic = .{
.bootstrap_method_attr_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.module => .{
.module = .{
.name_index = try input.takeInt(u16, .big),
},
},
.package => .{
.package = .{
.name_index = try input.takeInt(u16, .big),
},
},
};
}
pub fn deinit(self: *ConstantPoolInfo, allocator: std.mem.Allocator) void {
switch (self.*) {
.utf8 => |info| allocator.free(info.bytes),
else => {},
}
}
pub fn format(self: *const ConstantPoolInfo, w: *std.Io.Writer) std.Io.Writer.Error!void {
switch (self.*) {
.class => |class| try w.print("#{d}", .{ class.name_index }),
.field_ref => |field_ref| try w.print("#{d}.#{d}", .{ field_ref.class_index, field_ref.name_and_type_index }),
.method_ref => |method_ref| try w.print("#{d}.#{d}", .{ method_ref.class_index, method_ref.name_and_type_index }),
.interface_method_ref => |interface_method_ref| try w.print("#{d}.#{d}", .{ interface_method_ref.class_index, interface_method_ref.name_and_type_index }),
.string => |string| try w.print("#{d}", .{ string.string_index }),
.integer => |integer| try w.print("{d}", .{ integer.bytes }),
.float => |float| try w.print("{d}", .{ @as(f32, @bitCast(float.bytes)) }),
.long => |long| try w.print("{d}", .{ (@as(u64, long.high_bytes) << 32) | long.low_bytes }),
.double => |double| try w.print("{d}", .{ @as(f64, @bitCast((@as(u64, double.high_bytes) << 32) | double.low_bytes)) }),
.name_and_type => |name_and_type| try w.print("#{d}:#{d}", .{ name_and_type.name_index, name_and_type.descriptor_index }),
.utf8 => |utf8| try w.print("\"{s}\"", .{ utf8.bytes }),
.method_handle => |method_handle| try w.print("{s} #{d}", .{ @tagName(method_handle.reference_kind), method_handle.reference_index }),
.method_type => |method_type| try w.print("#{d}", .{ method_type.descriptor_index }),
.dynamic => |dynamic| try w.print("#{d} #{d}", .{ dynamic.bootstrap_method_attr_index, dynamic.name_and_type_index }),
.invoke_dynamic => |invoke_dynamic| try w.print("#{d} #{d}", .{ invoke_dynamic.bootstrap_method_attr_index, invoke_dynamic.name_and_type_index }),
.module => |module| try w.print("#{d}", .{ module.name_index }),
.package => |package| try w.print("#{d}", .{ package.name_index }),
}
}
pub fn indentedFormat(
self: *const ConstantPoolInfo,
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("constant_value_type: {s}\n", .{ @tagName(self.*) });
switch (self.*) {
.class => |class| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name:\n");
const class_name = class.name(constant_pool) catch return error.WriteFailed;
try class_name.indentedFormat(w, depth, indent + 1, constant_pool);
},
.field_ref => |field_ref| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("class:\n");
const class = field_ref.class(constant_pool) catch return error.WriteFailed;
try class.indentedFormat(w, depth, indent + 1, constant_pool);
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = field_ref.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.method_ref => |method_ref| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("class:\n");
const class = method_ref.class(constant_pool) catch return error.WriteFailed;
try class.indentedFormat(w, depth, indent + 1, constant_pool);
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = method_ref.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.interface_method_ref => |interface_method_ref| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("class:\n");
const class = interface_method_ref.class(constant_pool) catch return error.WriteFailed;
try class.indentedFormat(w, depth, indent + 1, constant_pool);
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = interface_method_ref.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.string => |string| {
const s = string.string(constant_pool) catch return error.WriteFailed;
try s.indentedFormat(w, depth, indent + 1, constant_pool);
},
.integer => |integer| {
try w.splatByteAll(' ', depth * indent);
try w.print("integer: {d}\n", .{ integer.bytes });
},
.float => |float| {
const f: f32 = @bitCast(float.bytes);
try w.splatByteAll(' ', depth * indent);
try w.print("float: {d}\n", .{ f });
},
.long => |long| {
const l: u64 = (@as(u64, long.high_bytes) << 32) | long.low_bytes;
try w.splatByteAll(' ', depth * indent);
try w.print("long: {d}\n", .{ l });
},
.double => |double| {
const l: u64 = (@as(u64, double.high_bytes) << 32) | double.low_bytes;
const d: f64 = @bitCast(l);
try w.splatByteAll(' ', depth * indent);
try w.print("double: {d}\n", .{ d });
},
.name_and_type => |name_and_type| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name:\n");
const name = name_and_type.name(constant_pool) catch return error.WriteFailed;
try name.indentedFormat(w, depth, indent + 1, constant_pool);
try w.splatByteAll(' ', depth * indent);
_ = try w.write("descriptor:\n");
const descriptor = name_and_type.descriptor(constant_pool) catch return error.WriteFailed;
try descriptor.indentedFormat(w, depth, indent + 1, constant_pool);
},
.utf8 => |utf8| {
try w.splatByteAll(' ', depth * indent);
try w.print("bytes: \"{s}\"\n", .{ utf8.bytes });
},
.method_handle => |method_handle| {
try w.splatByteAll(' ', depth * indent);
try w.print("kind: {t}\n", .{ method_handle.reference_kind });
try w.splatByteAll(' ', depth * indent);
_ = try w.write("reference:\n");
const reference = method_handle.reference(constant_pool) catch return error.WriteFailed;
try reference.indentedFormat(w, depth, indent + 1, constant_pool);
},
.method_type => |method_type| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("descriptor:\n");
const descriptor = method_type.descriptor(constant_pool) catch return error.WriteFailed;
try descriptor.indentedFormat(w, depth, indent + 1, constant_pool);
},
.dynamic => |dynamic| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = dynamic.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.invoke_dynamic => |invoke_dynamic| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = invoke_dynamic.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.module => |module| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name:\n");
const name = module.name(constant_pool) catch return error.WriteFailed;
try name.indentedFormat(w, depth, indent + 1, constant_pool);
},
.package => |package| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name:\n");
const name = package.name(constant_pool) catch return error.WriteFailed;
try name.indentedFormat(w, depth, indent + 1, constant_pool);
},
}
}
};

162
src/Class/AttributeInfo.zig
View file

@ -3,7 +3,7 @@ const std = @import("std");
const EnumFlags = @import("../EnumFlags.zig").EnumFlags;
const Class = @import("../Class.zig");
const ConstantPoolInfo = Class.ConstantPoolInfo;
const ConstantPool = Class.ConstantPool;
const ParseError = Class.ParseError;
const ResolveError = Class.ResolveError;
@ -44,11 +44,11 @@ pub const AttributeInfo = union(enum) {
const Self = @This();
pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo, allocator: std.mem.Allocator) (ParseError || ResolveError)!AttributeInfo {
pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPool.Info, allocator: std.mem.Allocator) (ParseError || ResolveError)!AttributeInfo {
const attribute_name_index = try input.takeInt(u16, .big) - 1;
if (attribute_name_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[attribute_name_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
const attribute_name = cp_info.?.utf8;
const attribute_length = try input.takeInt(u32, .big);
@ -266,7 +266,7 @@ pub const AttributeInfo = union(enum) {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
switch (self.*) {
.new => |new| {
@ -347,7 +347,7 @@ pub const AttributeInfo = union(enum) {
if (index >= constant_pool.len) return error.WriteFailed;
const cp_info = constant_pool[index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return error.WriteFailed;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return error.WriteFailed;
try w.splatByteAll(' ', depth * exception_indent);
try w.print("{d}:\n", .{ i });
@ -486,7 +486,7 @@ pub const AttributeInfo = union(enum) {
if (index >= constant_pool.len) return error.WriteFailed;
const cp_info = constant_pool[index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .package) return error.WriteFailed;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .package) return error.WriteFailed;
try w.splatByteAll(' ', depth * package_indent);
try w.print("{d}:\n", .{ i });
@ -517,7 +517,7 @@ pub const AttributeInfo = union(enum) {
if (index >= constant_pool.len) return error.WriteFailed;
const cp_info = constant_pool[index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return error.WriteFailed;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return error.WriteFailed;
try w.splatByteAll(' ', depth * class_indent);
try w.print("{d}:\n", .{ i });
@ -549,7 +549,7 @@ pub const AttributeInfo = union(enum) {
if (index >= constant_pool.len) return error.WriteFailed;
const cp_info = constant_pool[index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return error.WriteFailed;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return error.WriteFailed;
try w.splatByteAll(' ', depth * class_indent);
try w.print("{d}:\n", .{ i });
@ -580,11 +580,11 @@ pub const NewAttribute = struct {
allocator.free(self.info);
}
pub fn attributeName(self: *const Self, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn attributeName(self: *const Self, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const attribute_name_index = self.attribute_name_index - 1;
if (attribute_name_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[attribute_name_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
@ -601,7 +601,7 @@ pub const ConstantValue = struct {
};
}
pub fn constantValue(self: *const Self, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn constantValue(self: *const Self, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const constant_value_index = self.constant_value_index - 1;
if (constant_value_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[constant_value_index];
@ -631,7 +631,7 @@ pub const Code = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
try w.splatByteAll(' ', depth * indent);
try w.print("start_pc: {d}\n", .{ self.start_pc });
@ -650,17 +650,17 @@ pub const Code = struct {
}
}
pub fn catchType(self: *const ExceptionHandler, constant_pool: []const ?ConstantPoolInfo) ResolveError!?ConstantPoolInfo {
pub fn catchType(self: *const ExceptionHandler, constant_pool: []const ?ConstantPool.Info) ResolveError!?ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.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 ?ConstantPool.Info, allocator: std.mem.Allocator) (ParseError || ResolveError)!Self {
const max_stack = try input.takeInt(u16, .big);
const max_locals = try input.takeInt(u16, .big);
@ -947,7 +947,7 @@ pub const InnerClasses = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
try w.splatByteAll(' ', depth * indent);
try w.print("flags: {f}\n", .{ self.inner_class_access_flags });
@ -972,31 +972,31 @@ pub const InnerClasses = struct {
}
}
pub fn innerClass(self: *const InnerClass, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn innerClass(self: *const InnerClass, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const inner_class_info_index = self.inner_class_info_index - 1;
if (inner_class_info_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[inner_class_info_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn outerClass(self: *const InnerClass, constant_pool: []const ?ConstantPoolInfo) ResolveError!?ConstantPoolInfo {
pub fn outerClass(self: *const InnerClass, constant_pool: []const ?ConstantPool.Info) ResolveError!?ConstantPool.Info {
if (self.outer_class_info_index == 0) return null;
const outer_class_info_index = self.outer_class_info_index - 1;
if (outer_class_info_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[outer_class_info_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn innerName(self: *const InnerClass, constant_pool: []const ?ConstantPoolInfo) ResolveError!?ConstantPoolInfo {
pub fn innerName(self: *const InnerClass, constant_pool: []const ?ConstantPool.Info) ResolveError!?ConstantPool.Info {
if (self.inner_name_index == 0) return null;
const inner_name_index = self.inner_name_index - 1;
if (inner_name_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[inner_name_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1037,20 +1037,20 @@ pub const EnclosingMethod = struct {
};
}
pub fn class(self: *const EnclosingMethod, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn class(self: *const EnclosingMethod, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const class_index = self.class_index - 1;
if (class_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[class_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn method(self: *const EnclosingMethod, constant_pool: []const ?ConstantPoolInfo) ResolveError!?ConstantPoolInfo {
pub fn method(self: *const EnclosingMethod, constant_pool: []const ?ConstantPool.Info) ResolveError!?ConstantPool.Info {
if (self.method_index == 0) return null;
const method_index = self.method_index - 1;
if (method_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[method_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1068,11 +1068,11 @@ pub const Signature = struct {
};
}
pub fn signature(self: *const Signature, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn signature(self: *const Signature, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const signature_index = self.signature_index - 1;
if (signature_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[signature_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1088,11 +1088,11 @@ pub const SourceFile = struct {
};
}
pub fn sourceFile(self: *const SourceFile, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn sourceFile(self: *const SourceFile, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const source_file_index = self.source_file_index - 1;
if (source_file_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[source_file_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1174,7 +1174,7 @@ pub const LocalVariableTable = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
try w.splatByteAll(' ', depth * indent);
try w.print("start_pc: {d}\n", .{ self.start_pc });
@ -1193,19 +1193,19 @@ pub const LocalVariableTable = struct {
try descriptor_.indentedFormat(w, depth, indent + 1, constant_pool);
}
pub fn name(self: *const LocalVariable, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn name(self: *const LocalVariable, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn descriptor(self: *const LocalVariable, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn descriptor(self: *const LocalVariable, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1251,7 +1251,7 @@ pub const LocalVariableTypeTable = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
try w.splatByteAll(' ', depth * indent);
try w.print("start_pc: {d}\n", .{ self.start_pc });
@ -1270,19 +1270,19 @@ pub const LocalVariableTypeTable = struct {
try signature_.indentedFormat(w, depth, indent + 1, constant_pool);
}
pub fn name(self: *const LocalVariableType, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn name(self: *const LocalVariableType, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn signature(self: *const LocalVariableType, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn signature(self: *const LocalVariableType, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const signature_index = self.signature_index - 1;
if (signature_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[signature_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1623,7 +1623,7 @@ pub const BootstrapMethods = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
const bootstrap_method = self.bootstrapMethod(constant_pool) catch return error.WriteFailed;
try w.splatByteAll(' ', depth * indent);
@ -1641,7 +1641,7 @@ pub const BootstrapMethods = struct {
if (index >= constant_pool.len) return error.WriteFailed;
const cp_info = constant_pool[index];
if (cp_info == null or !@as(ConstantPoolInfo.Tag, cp_info.?).loadable()) return error.WriteFailed;
if (cp_info == null or !@as(ConstantPool.Info.Tag, cp_info.?).loadable()) return error.WriteFailed;
try w.splatByteAll(' ', depth * bootstrap_argument_indent);
try w.print("{d}:\n", .{ i });
@ -1649,11 +1649,11 @@ pub const BootstrapMethods = struct {
}
}
pub fn bootstrapMethod(self: *const BootstrapMethod, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn bootstrapMethod(self: *const BootstrapMethod, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const bootstrap_method_ref = self.bootstrap_method_ref - 1;
if (bootstrap_method_ref >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[bootstrap_method_ref];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .method_handle) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .method_handle) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1711,7 +1711,7 @@ pub const MethodParameters = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
try w.splatByteAll(' ', depth * indent);
try w.print("flags: {f}\n", .{ self.access_flags });
@ -1722,11 +1722,11 @@ pub const MethodParameters = struct {
try name_.indentedFormat(w, depth, indent + 1, constant_pool);
}
pub fn name(self: *const Parameter, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn name(self: *const Parameter, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1787,7 +1787,7 @@ pub const Module = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
const requires_ = self.requires(constant_pool) catch return error.WriteFailed;
try w.splatByteAll(' ', depth * indent);
@ -1805,20 +1805,20 @@ pub const Module = struct {
}
}
pub fn requires(self: *const Requires, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn requires(self: *const Requires, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const requires_index = self.requires_index - 1;
if (requires_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[requires_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .module) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .module) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn requiresVersion(self: *const Requires, constant_pool: []const ?ConstantPoolInfo) ResolveError!?ConstantPoolInfo {
pub fn requiresVersion(self: *const Requires, constant_pool: []const ?ConstantPool.Info) ResolveError!?ConstantPool.Info {
if (self.requires_version_index == 0) return null;
const requires_version_index = self.requires_version_index - 1;
if (requires_version_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[requires_version_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1838,7 +1838,7 @@ pub const Module = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
const exports_ = self.exports(constant_pool) catch return error.WriteFailed;
try w.splatByteAll(' ', depth * indent);
@ -1859,7 +1859,7 @@ pub const Module = struct {
if (index >= constant_pool.len) return error.WriteFailed;
const cp_info = constant_pool[index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .module) return error.WriteFailed;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .module) return error.WriteFailed;
try w.splatByteAll(' ', depth * exports_to_indent);
try w.print("{d}:\n", .{ i });
@ -1867,11 +1867,11 @@ pub const Module = struct {
}
}
pub fn exports(self: *const Exports, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn exports(self: *const Exports, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const exports_index = self.exports_index - 1;
if (exports_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[exports_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .package) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .package) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1891,7 +1891,7 @@ pub const Module = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
const opens_ = self.opens(constant_pool) catch return error.WriteFailed;
try w.splatByteAll(' ', depth * indent);
@ -1912,7 +1912,7 @@ pub const Module = struct {
if (index >= constant_pool.len) return error.WriteFailed;
const cp_info = constant_pool[index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .module) return error.WriteFailed;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .module) return error.WriteFailed;
try w.splatByteAll(' ', depth * opens_to_indent);
try w.print("{d}:\n", .{ i });
@ -1920,11 +1920,11 @@ pub const Module = struct {
}
}
pub fn opens(self: *const Opens, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn opens(self: *const Opens, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const opens_index = self.opens_index - 1;
if (opens_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[opens_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .package) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .package) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -1938,7 +1938,7 @@ pub const Module = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
const provides_ = self.provides(constant_pool) catch return error.WriteFailed;
try w.splatByteAll(' ', depth * indent);
@ -1956,7 +1956,7 @@ pub const Module = struct {
if (index >= constant_pool.len) return error.WriteFailed;
const cp_info = constant_pool[index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return error.WriteFailed;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return error.WriteFailed;
try w.splatByteAll(' ', depth * provides_with_indent);
try w.print("{d}:\n", .{ i });
@ -1964,11 +1964,11 @@ pub const Module = struct {
}
}
pub fn provides(self: *const Provides, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn provides(self: *const Provides, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const provides_index = self.provides_index - 1;
if (provides_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[provides_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -2088,7 +2088,7 @@ pub const Module = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
const module_name = self.moduleName(constant_pool) catch return error.WriteFailed;
try w.splatByteAll(' ', depth * indent);
@ -2152,7 +2152,7 @@ pub const Module = struct {
if (index >= constant_pool.len) return error.WriteFailed;
const cp_info = constant_pool[index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return error.WriteFailed;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return error.WriteFailed;
try w.splatByteAll(' ', depth * uses_indent);
try w.print("{d}:\n", .{ i });
@ -2172,20 +2172,20 @@ pub const Module = struct {
}
}
pub fn moduleName(self: *const Module, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn moduleName(self: *const Module, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const module_name_index = self.module_name_index - 1;
if (module_name_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[module_name_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn moduleVersion(self: *const Module, constant_pool: []const ?ConstantPoolInfo) ResolveError!?ConstantPoolInfo {
pub fn moduleVersion(self: *const Module, constant_pool: []const ?ConstantPool.Info) ResolveError!?ConstantPool.Info {
if (self.module_version_index == 0) return null;
const module_version_index = self.module_version_index - 1;
if (module_version_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[module_version_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -2224,11 +2224,11 @@ pub const ModuleMainClass = struct {
};
}
pub fn mainClass(self: *const ModuleMainClass, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn mainClass(self: *const ModuleMainClass, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const main_class_index = self.main_class_index - 1;
if (main_class_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[main_class_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -2244,11 +2244,11 @@ pub const NestHost = struct {
};
}
pub fn hostClass(self: *const NestHost, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn hostClass(self: *const NestHost, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
const host_class_index = self.host_class_index - 1;
if (host_class_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[host_class_index];
if (cp_info == null or @as(ConstantPoolInfo.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
@ -2285,7 +2285,7 @@ pub const Record = struct {
descriptor_index: u16,
attributes: []AttributeInfo,
pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo, allocator: std.mem.Allocator) (ParseError || ResolveError)!RecordComponentInfo {
pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPool.Info, allocator: std.mem.Allocator) (ParseError || ResolveError)!RecordComponentInfo {
const name_index = try input.takeInt(u16, .big);
const descriptor_index = try input.takeInt(u16, .big);
@ -2315,7 +2315,7 @@ pub const Record = struct {
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
const name_ = self.name(constant_pool) catch return error.WriteFailed;
try w.splatByteAll(' ', depth * indent);
@ -2341,24 +2341,24 @@ pub const Record = struct {
}
}
pub fn name(self: *const RecordComponentInfo, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn name(self: *const RecordComponentInfo, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn descriptor(self: *const RecordComponentInfo, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn descriptor(self: *const RecordComponentInfo, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) 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 ?ConstantPool.Info, allocator: std.mem.Allocator) (ParseError || ResolveError)!Self {
const components_count = try input.takeInt(u16, .big);
const components = try allocator.alloc(RecordComponentInfo, components_count);
for (components) |*component| {

581
src/Class/ConstantPool.zig Normal file
View file

@ -0,0 +1,581 @@
const std = @import("std");
const Class = @import("../Class.zig");
const AttributeInfo = Class.AttributeInfo;
const ParseError = Class.ParseError;
const ResolveError = Class.ResolveError;
pub const Info = union(Info.Tag) {
class: Info.Class,
field_ref: FieldRef,
method_ref: MethodRef,
interface_method_ref: InterfaceMethodRef,
string: String,
integer: Integer,
float: Float,
long: Long,
double: Double,
name_and_type: NameAndType,
utf8: Utf8,
method_handle: MethodHandle,
method_type: MethodType,
dynamic: Dynamic,
invoke_dynamic: InvokeDynamic,
module: Module,
package: Package,
pub const Tag = enum(u8) {
class = 7,
field_ref = 9,
method_ref = 10,
interface_method_ref = 11,
string = 8,
integer = 3,
float = 4,
long = 5,
double = 6,
name_and_type = 12,
utf8 = 1,
method_handle = 15,
method_type = 16,
dynamic = 17,
invoke_dynamic = 18,
module = 19,
package = 20,
pub fn loadable(self: Tag) bool {
return switch (self) {
.integer, .float, .long, .double, .class, .string, .method_handle, .method_type, .dynamic => true,
else => false,
};
}
};
pub const Class = struct {
name_index: u16,
const Self = @This();
pub fn name(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const FieldRef = struct {
class_index: u16,
name_and_type_index: u16,
const Self = @This();
pub fn class(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const class_index = self.class_index - 1;
if (class_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[class_index];
if (cp_info == null or @as(Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn nameAndType(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const MethodRef = struct {
class_index: u16,
name_and_type_index: u16,
const Self = @This();
pub fn class(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const class_index = self.class_index - 1;
if (class_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[class_index];
if (cp_info == null or @as(Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn nameAndType(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const InterfaceMethodRef = struct {
class_index: u16,
name_and_type_index: u16,
const Self = @This();
pub fn class(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const class_index = self.class_index - 1;
if (class_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[class_index];
if (cp_info == null or @as(Tag, cp_info.?) != .class) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn nameAndType(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const String = struct {
string_index: u16,
const Self = @This();
pub fn string(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const string_index = self.string_index - 1;
if (string_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[string_index];
if (cp_info == null or @as(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Integer = struct {
bytes: u32,
};
pub const Float = struct {
bytes: u32,
};
pub const Long = struct {
high_bytes: u32,
low_bytes: u32,
};
pub const Double = struct {
high_bytes: u32,
low_bytes: u32,
};
pub const NameAndType = struct {
name_index: u16,
descriptor_index: u16,
const Self = @This();
pub fn name(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn descriptor(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Utf8 = struct {
bytes: []const u8,
};
pub const MethodHandle = struct {
reference_kind: Kind,
reference_index: u16,
const Self = @This();
pub const Kind = enum(u8) {
get_field = 1,
get_static = 2,
put_field = 3,
put_static = 4,
invoke_virtual = 5,
invoke_static = 6,
invoke_special = 7,
new_invoke_special = 8,
invoke_interface = 9,
};
pub fn reference(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const reference_index = self.reference_index - 1;
if (reference_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[reference_index];
return switch (self.reference_kind) {
.get_field, .get_static, .put_field, .put_static => blk: {
if (cp_info == null or @as(Tag, cp_info.?) != .field_ref) break :blk ResolveError.InvalidConstantType;
break :blk cp_info.?;
},
.invoke_virtual, .invoke_static, .invoke_special, .new_invoke_special => blk: {
if (cp_info == null or @as(Tag, cp_info.?) != .method_ref) break :blk ResolveError.InvalidConstantType;
break :blk cp_info.?;
},
.invoke_interface => blk: {
if (cp_info == null or @as(Tag, cp_info.?) != .interface_method_ref) break :blk ResolveError.InvalidConstantType;
break :blk cp_info.?;
},
};
}
};
pub const MethodType = struct {
descriptor_index: u16,
const Self = @This();
pub fn descriptor(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Dynamic = struct {
bootstrap_method_attr_index: u16,
name_and_type_index: u16,
const Self = @This();
pub fn nameAndType(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const InvokeDynamic = struct {
bootstrap_method_attr_index: u16,
name_and_type_index: u16,
const Self = @This();
pub fn nameAndType(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
const name_and_type_index = self.name_and_type_index - 1;
if (name_and_type_index >= constant_pool.len) return ResolveError.InvalidConstantPoolIndex;
const cp_info = constant_pool[name_and_type_index];
if (cp_info == null or @as(Tag, cp_info.?) != .name_and_type) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Module = struct {
name_index: u16,
const Self = @This();
pub fn name(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub const Package = struct {
name_index: u16,
const Self = @This();
pub fn name(self: *const Self, constant_pool: []const ?Info) ResolveError!Info {
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(Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
};
pub fn parse(input: *std.Io.Reader, allocator: std.mem.Allocator) ParseError!Info {
const tag_byte = try input.takeByte();
const tag = std.enums.fromInt(Tag, tag_byte) orelse return ParseError.InvalidTag;
return switch (tag) {
.class => .{
.class = .{
.name_index = try input.takeInt(u16, .big),
},
},
.field_ref => .{
.field_ref = .{
.class_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.method_ref => .{
.method_ref = .{
.class_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.interface_method_ref => .{
.interface_method_ref = .{
.class_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.string => .{
.string = .{
.string_index = try input.takeInt(u16, .big),
},
},
.integer => .{
.integer = .{
.bytes = try input.takeInt(u32, .big),
},
},
.float => .{
.integer = .{
.bytes = try input.takeInt(u32, .big),
},
},
.long => .{
.long = .{
.high_bytes = try input.takeInt(u32, .big),
.low_bytes = try input.takeInt(u32, .big),
},
},
.double => .{
.double = .{
.high_bytes = try input.takeInt(u32, .big),
.low_bytes = try input.takeInt(u32, .big),
},
},
.name_and_type => .{
.name_and_type = .{
.name_index = try input.takeInt(u16, .big),
.descriptor_index = try input.takeInt(u16, .big),
},
},
.utf8 => blk: {
const length = try input.takeInt(u16, .big);
const bytes = try input.readAlloc(allocator, length);
break :blk .{
.utf8 = .{
.bytes = bytes,
},
};
},
.method_handle => blk: {
const kind_byte = try input.takeByte();
const kind = std.enums.fromInt(MethodHandle.Kind, kind_byte) orelse return ParseError.InvalidTag;
break :blk .{
.method_handle = .{
.reference_kind = kind,
.reference_index = try input.takeInt(u16, .big),
},
};
},
.method_type => .{
.method_type = .{
.descriptor_index = try input.takeInt(u16, .big),
},
},
.dynamic => .{
.dynamic = .{
.bootstrap_method_attr_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.invoke_dynamic => .{
.invoke_dynamic = .{
.bootstrap_method_attr_index = try input.takeInt(u16, .big),
.name_and_type_index = try input.takeInt(u16, .big),
},
},
.module => .{
.module = .{
.name_index = try input.takeInt(u16, .big),
},
},
.package => .{
.package = .{
.name_index = try input.takeInt(u16, .big),
},
},
};
}
pub fn deinit(self: *Info, allocator: std.mem.Allocator) void {
switch (self.*) {
.utf8 => |info| allocator.free(info.bytes),
else => {},
}
}
pub fn format(self: *const Info, w: *std.Io.Writer) std.Io.Writer.Error!void {
switch (self.*) {
.class => |class| try w.print("#{d}", .{ class.name_index }),
.field_ref => |field_ref| try w.print("#{d}.#{d}", .{ field_ref.class_index, field_ref.name_and_type_index }),
.method_ref => |method_ref| try w.print("#{d}.#{d}", .{ method_ref.class_index, method_ref.name_and_type_index }),
.interface_method_ref => |interface_method_ref| try w.print("#{d}.#{d}", .{ interface_method_ref.class_index, interface_method_ref.name_and_type_index }),
.string => |string| try w.print("#{d}", .{ string.string_index }),
.integer => |integer| try w.print("{d}", .{ integer.bytes }),
.float => |float| try w.print("{d}", .{ @as(f32, @bitCast(float.bytes)) }),
.long => |long| try w.print("{d}", .{ (@as(u64, long.high_bytes) << 32) | long.low_bytes }),
.double => |double| try w.print("{d}", .{ @as(f64, @bitCast((@as(u64, double.high_bytes) << 32) | double.low_bytes)) }),
.name_and_type => |name_and_type| try w.print("#{d}:#{d}", .{ name_and_type.name_index, name_and_type.descriptor_index }),
.utf8 => |utf8| try w.print("\"{s}\"", .{ utf8.bytes }),
.method_handle => |method_handle| try w.print("{s} #{d}", .{ @tagName(method_handle.reference_kind), method_handle.reference_index }),
.method_type => |method_type| try w.print("#{d}", .{ method_type.descriptor_index }),
.dynamic => |dynamic| try w.print("#{d} #{d}", .{ dynamic.bootstrap_method_attr_index, dynamic.name_and_type_index }),
.invoke_dynamic => |invoke_dynamic| try w.print("#{d} #{d}", .{ invoke_dynamic.bootstrap_method_attr_index, invoke_dynamic.name_and_type_index }),
.module => |module| try w.print("#{d}", .{ module.name_index }),
.package => |package| try w.print("#{d}", .{ package.name_index }),
}
}
pub fn indentedFormat(
self: *const Info,
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?Info,
) std.Io.Writer.Error!void {
try w.splatByteAll(' ', depth * indent);
try w.print("constant_value_type: {s}\n", .{ @tagName(self.*) });
switch (self.*) {
.class => |class| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name:\n");
const class_name = class.name(constant_pool) catch return error.WriteFailed;
try class_name.indentedFormat(w, depth, indent + 1, constant_pool);
},
.field_ref => |field_ref| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("class:\n");
const class = field_ref.class(constant_pool) catch return error.WriteFailed;
try class.indentedFormat(w, depth, indent + 1, constant_pool);
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = field_ref.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.method_ref => |method_ref| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("class:\n");
const class = method_ref.class(constant_pool) catch return error.WriteFailed;
try class.indentedFormat(w, depth, indent + 1, constant_pool);
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = method_ref.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.interface_method_ref => |interface_method_ref| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("class:\n");
const class = interface_method_ref.class(constant_pool) catch return error.WriteFailed;
try class.indentedFormat(w, depth, indent + 1, constant_pool);
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = interface_method_ref.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.string => |string| {
const s = string.string(constant_pool) catch return error.WriteFailed;
try s.indentedFormat(w, depth, indent + 1, constant_pool);
},
.integer => |integer| {
try w.splatByteAll(' ', depth * indent);
try w.print("integer: {d}\n", .{ integer.bytes });
},
.float => |float| {
const f: f32 = @bitCast(float.bytes);
try w.splatByteAll(' ', depth * indent);
try w.print("float: {d}\n", .{ f });
},
.long => |long| {
const l: u64 = (@as(u64, long.high_bytes) << 32) | long.low_bytes;
try w.splatByteAll(' ', depth * indent);
try w.print("long: {d}\n", .{ l });
},
.double => |double| {
const l: u64 = (@as(u64, double.high_bytes) << 32) | double.low_bytes;
const d: f64 = @bitCast(l);
try w.splatByteAll(' ', depth * indent);
try w.print("double: {d}\n", .{ d });
},
.name_and_type => |name_and_type| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name:\n");
const name = name_and_type.name(constant_pool) catch return error.WriteFailed;
try name.indentedFormat(w, depth, indent + 1, constant_pool);
try w.splatByteAll(' ', depth * indent);
_ = try w.write("descriptor:\n");
const descriptor = name_and_type.descriptor(constant_pool) catch return error.WriteFailed;
try descriptor.indentedFormat(w, depth, indent + 1, constant_pool);
},
.utf8 => |utf8| {
try w.splatByteAll(' ', depth * indent);
try w.print("bytes: \"{s}\"\n", .{ utf8.bytes });
},
.method_handle => |method_handle| {
try w.splatByteAll(' ', depth * indent);
try w.print("kind: {t}\n", .{ method_handle.reference_kind });
try w.splatByteAll(' ', depth * indent);
_ = try w.write("reference:\n");
const reference = method_handle.reference(constant_pool) catch return error.WriteFailed;
try reference.indentedFormat(w, depth, indent + 1, constant_pool);
},
.method_type => |method_type| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("descriptor:\n");
const descriptor = method_type.descriptor(constant_pool) catch return error.WriteFailed;
try descriptor.indentedFormat(w, depth, indent + 1, constant_pool);
},
.dynamic => |dynamic| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = dynamic.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.invoke_dynamic => |invoke_dynamic| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name_and_type:\n");
const name_and_type = invoke_dynamic.nameAndType(constant_pool) catch return error.WriteFailed;
try name_and_type.indentedFormat(w, depth, indent + 1, constant_pool);
},
.module => |module| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name:\n");
const name = module.name(constant_pool) catch return error.WriteFailed;
try name.indentedFormat(w, depth, indent + 1, constant_pool);
},
.package => |package| {
try w.splatByteAll(' ', depth * indent);
_ = try w.write("name:\n");
const name = package.name(constant_pool) catch return error.WriteFailed;
try name.indentedFormat(w, depth, indent + 1, constant_pool);
},
}
}
};

14
src/Class/FieldInfo.zig
View file

@ -3,7 +3,7 @@ const std = @import("std");
const EnumFlags = @import("../EnumFlags.zig").EnumFlags;
const Class = @import("../Class.zig");
const ConstantPoolInfo = Class.ConstantPoolInfo;
const ConstantPool = Class.ConstantPool;
const AttributeInfo = Class.AttributeInfo;
const ResolveError = Class.ResolveError;
@ -26,7 +26,7 @@ pub const FieldAccessFlags = EnumFlags(enum(u16) {
@"enum" = 0x4000,
});
pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo, allocator: std.mem.Allocator) !Self {
pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPool.Info, allocator: std.mem.Allocator) !Self {
const access_flags: FieldAccessFlags = .{ .mask = try input.takeInt(u16, .big) };
const name_index = try input.takeInt(u16, .big);
const descriptor_index = try input.takeInt(u16, .big);
@ -51,7 +51,7 @@ pub fn indentedFormat(
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
try w.splatByteAll(' ', depth * indent);
try w.print("flags: {f}\n", .{ self.access_flags });
@ -80,19 +80,19 @@ pub fn indentedFormat(
}
}
pub fn name(self: *const Self, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn name(self: *const Self, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn descriptor(self: *const Self, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn descriptor(self: *const Self, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}

14
src/Class/MethodInfo.zig
View file

@ -3,7 +3,7 @@ const std = @import("std");
const EnumFlags = @import("../EnumFlags.zig").EnumFlags;
const Class = @import("../Class.zig");
const ConstantPoolInfo = Class.ConstantPoolInfo;
const ConstantPool = Class.ConstantPool;
const AttributeInfo = Class.AttributeInfo;
const ResolveError = Class.ResolveError;
@ -29,7 +29,7 @@ pub const MethodAccessFlags = EnumFlags(enum(u16) {
synthetic = 0x1000,
});
pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPoolInfo, allocator: std.mem.Allocator) !Self {
pub fn parse(input: *std.Io.Reader, constant_pool: []const ?ConstantPool.Info, allocator: std.mem.Allocator) !Self {
const access_flags: MethodAccessFlags = .{ .mask = try input.takeInt(u16, .big) };
const name_index = try input.takeInt(u16, .big);
const descriptor_index = try input.takeInt(u16, .big);
@ -54,7 +54,7 @@ pub fn indentedFormat(
w: *std.Io.Writer,
depth: usize,
indent: u8,
constant_pool: []const ?ConstantPoolInfo,
constant_pool: []const ?ConstantPool.Info,
) std.Io.Writer.Error!void {
try w.splatByteAll(' ', depth * indent);
try w.print("flags: {f}\n", .{ self.access_flags });
@ -83,19 +83,19 @@ pub fn indentedFormat(
}
}
pub fn name(self: *const Self, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn name(self: *const Self, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}
pub fn descriptor(self: *const Self, constant_pool: []const ?ConstantPoolInfo) ResolveError!ConstantPoolInfo {
pub fn descriptor(self: *const Self, constant_pool: []const ?ConstantPool.Info) ResolveError!ConstantPool.Info {
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;
if (cp_info == null or @as(ConstantPool.Info.Tag, cp_info.?) != .utf8) return ResolveError.InvalidConstantType;
return cp_info.?;
}