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Improve Kym Run-TIme Errors #45

Merged
kayomn merged 5 commits from better-kym-runtime-errors into main 2023-11-06 00:47:37 +01:00
Conversation 0 Commits 5 Files Changed 7 +302 -194
7 changed files with 302 additions and 194 deletions
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2
source/coral/io.zig
View File

@ -374,7 +374,7 @@ pub fn tag_of(comptime value: anytype) Tag(@TypeOf(value)) {
return @as(Tag(@TypeOf(value)), value);
}
pub fn write_null(buffer: []const u8) ?usize {
fn write_null(buffer: []const u8) ?usize {
return buffer.len;
}

176
source/ona/kym.zig
View File

@ -11,7 +11,7 @@ const tokens = @import("./kym/tokens.zig");
const tree = @import("./kym/tree.zig");
pub const Frame = struct {
name_stringable: *RuntimeRef,
callable: *RuntimeRef,
arg_count: u8,
locals_top: usize,
@ -89,21 +89,21 @@ pub const RuntimeEnv = struct {
pub fn call(self: *RuntimeEnv, callable: *const RuntimeRef, args: []const *RuntimeRef) RuntimeError!?*RuntimeRef {
// TODO: Handle errors.
for (args) |arg| {
try self.locals.push_one(try self.acquire(arg));
try self.locals.push_one(arg.acquire());
}
const frame = try self.push_frame(callable, args.len);
const frame = try self.push_frame(callable, @intCast(args.len));
defer self.pop_frame();
return self.call_frame(frame);
return self.call_frame(&frame);
}
pub fn call_frame(self: *RuntimeEnv, callable: *const RuntimeRef, frame: Frame) RuntimeError!?*RuntimeRef {
return switch (callable.object().payload) {
pub fn call_frame(self: *RuntimeEnv, frame: *const Frame) RuntimeError!?*RuntimeRef {
return switch (frame.callable.object().payload) {
.syscall => |syscall| syscall(self, frame),
.dynamic => |dynamic| dynamic.typeinfo().call(self, dynamic.userdata(), frame),
else => self.raise(error.TypeMismatch, "{typename} is not callable", .{.typename = callable.typename()}),
else => self.raise(error.TypeMismatch, "{typename} is not callable", .{.typename = frame.callable.typename()}),
};
}
@ -279,10 +279,17 @@ pub const RuntimeEnv = struct {
};
}
pub fn import(self: *RuntimeEnv, file_path: file.Path) RuntimeError!?*RuntimeRef {
const file_name = file_path.get_string();
pub fn get_boxed(self: *RuntimeEnv, boxable: *RuntimeRef) RuntimeError!?*RuntimeRef {
return switch (boxable.object().payload) {
.boxed => |boxed| if (boxed) |boxed_value| boxed_value.acquire() else null,
else => self.raise(error.TypeMismatch, "{typename} is not boxable", .{.typename = boxable.typename()}),
};
}
pub fn import(self: *RuntimeEnv, file_path: file.Path) RuntimeError!?*RuntimeRef {
var callable = try self.new_dynamic(coral.io.bytes_of(&make_chunk: {
const file_name = file_path.get_string();
var chunk = make_chunk: {
const file_data =
(try file.allocate_and_load(self.allocator, self.options.import_access, file_path)) orelse {
return self.raise(error.BadOperation, "failed to open or read `{name}`", .{
@ -308,26 +315,12 @@ pub const RuntimeEnv = struct {
};
}
const chunk_name = try self.new_string(file_name);
break: make_chunk try Chunk.make(self, file_name, &root.environment);
}), Chunk.typeinfo);
defer self.discard(chunk_name);
defer self.discard(callable);
break: make_chunk try Chunk.make(self, chunk_name, &root.environment);
};
defer chunk.free(self);
return execute_chunk: {
const name = try self.new_string(file_name);
defer self.discard(name);
const frame = try self.push_frame(name, 0);
defer self.pop_frame();
break: execute_chunk chunk.execute(self, frame);
};
return self.call(callable, &.{});
}
pub fn make(allocator: coral.io.Allocator, options: Options) coral.io.AllocationError!RuntimeEnv {
@ -381,14 +374,14 @@ pub const RuntimeEnv = struct {
};
}
pub fn new_boolean(self: *RuntimeEnv, value: bool) RuntimeError!*RuntimeRef {
pub fn new_boolean(self: *RuntimeEnv, value: bool) coral.io.AllocationError!*RuntimeRef {
return RuntimeRef.allocate(self.allocator, .{
.ref_count = 1,
.payload = if (value) .true else .false,
});
}
pub fn new_boxed(self: *RuntimeEnv, value: ?*const RuntimeRef) RuntimeError!*RuntimeRef {
pub fn new_boxed(self: *RuntimeEnv, value: ?*const RuntimeRef) coral.io.AllocationError!*RuntimeRef {
return RuntimeRef.allocate(self.allocator, .{
.ref_count = 1,
.payload = .{.boxed = if (value) |ref| ref.acquire() else null},
@ -399,7 +392,7 @@ pub const RuntimeEnv = struct {
self: *RuntimeEnv,
userdata: []const coral.io.Byte,
typeinfo: *const Typeinfo,
) RuntimeError!*RuntimeRef {
) coral.io.AllocationError!*RuntimeRef {
coral.debug.assert(userdata.len == typeinfo.size);
const dynamic = try self.allocator.reallocate(null, @sizeOf(usize) + typeinfo.size);
@ -415,21 +408,21 @@ pub const RuntimeEnv = struct {
});
}
pub fn new_fixed(self: *RuntimeEnv, value: Fixed) RuntimeError!*RuntimeRef {
pub fn new_fixed(self: *RuntimeEnv, value: Fixed) coral.io.AllocationError!*RuntimeRef {
return RuntimeRef.allocate(self.allocator, .{
.ref_count = 1,
.payload = .{.fixed = value},
});
}
pub fn new_float(self: *RuntimeEnv, value: Float) RuntimeError!*RuntimeRef {
pub fn new_float(self: *RuntimeEnv, value: Float) coral.io.AllocationError!*RuntimeRef {
return RuntimeRef.allocate(self.allocator, .{
.ref_count = 1,
.payload = .{.float = value},
});
}
pub fn new_string(self: *RuntimeEnv, value: []const coral.io.Byte) RuntimeError!*RuntimeRef {
pub fn new_string(self: *RuntimeEnv, value: []const coral.io.Byte) coral.io.AllocationError!*RuntimeRef {
if (value.len > coral.math.max_int(@typeInfo(Fixed).Int)) {
return error.OutOfMemory;
}
@ -450,7 +443,7 @@ pub const RuntimeEnv = struct {
});
}
pub fn new_symbol(self: *RuntimeEnv, value: []const coral.io.Byte) RuntimeError!*RuntimeRef {
pub fn new_symbol(self: *RuntimeEnv, value: []const coral.io.Byte) coral.io.AllocationError!*RuntimeRef {
return RuntimeRef.allocate(self.allocator, .{
.ref_count = 1,
@ -468,14 +461,14 @@ pub const RuntimeEnv = struct {
});
}
pub fn new_syscall(self: *RuntimeEnv, value: *const Syscall) RuntimeError!*RuntimeRef {
pub fn new_syscall(self: *RuntimeEnv, value: *const Syscall) coral.io.AllocationError!*RuntimeRef {
return RuntimeRef.allocate(self.allocator, .{
.ref_count = 1,
.payload = .{.syscall = value},
});
}
pub fn new_table(self: *RuntimeEnv) RuntimeError!*RuntimeRef {
pub fn new_table(self: *RuntimeEnv) coral.io.AllocationError!*RuntimeRef {
var table = Table.make(self);
errdefer table.free(self);
@ -483,14 +476,14 @@ pub const RuntimeEnv = struct {
return try self.new_dynamic(coral.io.bytes_of(&table), Table.typeinfo);
}
pub fn new_vector2(self: *RuntimeEnv, x: f32, y: f32) RuntimeError!*RuntimeRef {
pub fn new_vector2(self: *RuntimeEnv, x: f32, y: f32) coral.io.AllocationError!*RuntimeRef {
return RuntimeRef.allocate(self.allocator, .{
.ref_count = 1,
.payload = .{.vector2 = .{x, y}},
});
}
pub fn new_vector3(self: *RuntimeEnv, x: f32, y: f32, z: f32) RuntimeError!*RuntimeRef {
pub fn new_vector3(self: *RuntimeEnv, x: f32, y: f32, z: f32) coral.io.AllocationError!*RuntimeRef {
return RuntimeRef.allocate(self.allocator, .{
.ref_count = 1,
.payload = .{.vector3 = .{x, y, z}},
@ -513,7 +506,7 @@ pub const RuntimeEnv = struct {
const popped_frame = self.frames.pop();
coral.debug.assert(popped_frame != null);
self.discard(popped_frame.?.name_stringable);
self.discard(popped_frame.?.callable);
var locals_to_pop = self.locals.values.len - popped_frame.?.locals_top;
@ -534,9 +527,21 @@ pub const RuntimeEnv = struct {
return self.locals.pop() orelse self.raise(error.IllegalState, "stack underflow", .{});
}
pub fn push_frame(self: *RuntimeEnv, name_stringable: *RuntimeRef, arg_count: u8) RuntimeError!Frame {
pub fn push_frame(self: *RuntimeEnv, callable: *const RuntimeRef, arg_count: u8) RuntimeError!Frame {
if (callable.as_dynamic(Chunk.typeinfo)) |chunk_userdata| {
const arity = @as(*Chunk, @ptrCast(@alignCast(chunk_userdata))).arity;
if (arg_count < arity) {
return self.raise(error.BadOperation, "expected `{expected}` {noun}, {provided} provided", .{
.expected = arity,
.provided = arg_count,
.noun = if (arity == 1) "argument" else "arguments",
});
}
}
const frame = Frame{
.name_stringable = name_stringable.acquire(),
.callable = callable.acquire(),
.arg_count = arg_count,
.locals_top = self.locals.values.len - arg_count,
};
@ -547,13 +552,11 @@ pub const RuntimeEnv = struct {
}
pub fn raise(self: *RuntimeEnv, error_value: RuntimeError, comptime format: []const coral.io.Byte, args: anytype) RuntimeError {
{
const formatted_message = try coral.utf8.alloc_formatted(self.allocator, format, args);
const formatted_message = try coral.utf8.alloc_formatted(self.allocator, format, args);
defer self.allocator.deallocate(formatted_message);
defer self.allocator.deallocate(formatted_message);
self.print_error(formatted_message);
}
self.print_error(formatted_message);
if (!self.frames.is_empty()) {
self.print_error("stack trace:");
@ -563,17 +566,38 @@ pub const RuntimeEnv = struct {
while (remaining_frames != 0) {
remaining_frames -= 1;
const callable_string = try self.to_string(self.frames.values[remaining_frames].name_stringable);
const callable = self.frames.values[remaining_frames].callable;
const name = try self.to_string(callable);
defer self.discard(callable_string);
defer self.discard(name);
self.print_error(get_name: {
const string = callable_string.as_string();
if (callable.as_dynamic(Chunk.typeinfo)) |chunk_userdata| {
const chunk = @as(*Chunk, @ptrCast(@alignCast(chunk_userdata)));
coral.debug.assert(string != null);
const chunk_name = try coral.utf8.alloc_formatted(self.allocator, "{name}@{line}", .{
.name = get_name: {
const string = name.as_string();
break: get_name string.?;
});
coral.debug.assert(string != null);
break: get_name string.?;
},
.line = chunk.lines.values[chunk.cursor],
});
defer self.allocator.deallocate(chunk_name);
self.print_error(chunk_name);
} else {
self.print_error(get_name: {
const string = name.as_string();
coral.debug.assert(string != null);
break: get_name string.?;
});
}
}
}
@ -590,6 +614,22 @@ pub const RuntimeEnv = struct {
};
}
pub fn set_boxed(self: *RuntimeEnv, boxable: *RuntimeRef, value: ?*const RuntimeRef) RuntimeError!void {
switch (boxable.object().payload) {
.boxed => |*boxed| {
if (boxed.*) |unboxed_value| {
self.discard(unboxed_value);
}
boxed.* = if (value) |ref| ref.acquire() else null;
},
else => return self.raise(error.TypeMismatch, "{typename} is not boxable", .{
.typename = boxable.typename(),
}),
}
}
pub fn sub(self: *RuntimeEnv, lhs: *const RuntimeRef, rhs: *const RuntimeRef) RuntimeError!*RuntimeRef {
return switch (lhs.object().payload) {
.fixed => |lhs_fixed| switch (rhs.object().payload) {
@ -623,7 +663,7 @@ pub const RuntimeEnv = struct {
};
}
pub fn to_string(self: *RuntimeEnv, value: *const RuntimeRef) RuntimeError!*RuntimeRef {
pub fn to_string(self: *RuntimeEnv, value: *const RuntimeRef) coral.io.AllocationError!*RuntimeRef {
const decimal_format = coral.utf8.DecimalFormat.default;
return switch (value.object().payload) {
@ -683,8 +723,8 @@ pub const RuntimeEnv = struct {
break: convert self.new_string(string[0 .. length.?]);
},
.syscall => self.new_string("<syscall>"),
.dynamic => self.new_string("<dynamic>"),
.syscall => self.new_string("syscall"),
.dynamic => |dynamic| dynamic.typeinfo().to_string(self, dynamic.userdata()),
};
}
@ -793,13 +833,6 @@ pub const RuntimeRef = opaque {
return @ptrCast(try coral.io.allocate_one(allocator, data));
}
pub fn as_boxed(self: *const RuntimeRef) ?*?*RuntimeRef {
return switch (self.object().payload) {
.boxed => |*boxed| boxed,
else => null,
};
}
pub fn as_dynamic(self: *const RuntimeRef, typeinfo: *const Typeinfo) ?[]u8 {
return switch (self.object().payload) {
.dynamic => |dynamic| if (dynamic.typeinfo() == typeinfo) dynamic.userdata() else null,
@ -865,8 +898,8 @@ pub const RuntimeRef = opaque {
break: unbox boxed_value.equals(other);
}
if (other.as_boxed()) |boxed_value| {
break: unbox boxed_value.* == null;
if (other.object().payload == .boxed) {
break: unbox other.object().payload.boxed == null;
}
break: unbox false;
@ -951,17 +984,18 @@ pub const RuntimeRef = opaque {
}
};
pub const Syscall = fn (env: *RuntimeEnv, frame: Frame) RuntimeError!?*RuntimeRef;
pub const Syscall = fn (env: *RuntimeEnv, frame: *const Frame) RuntimeError!?*RuntimeRef;
pub const Typeinfo = struct {
name: []const coral.io.Byte,
size: usize,
destruct: ?*const fn (env: *RuntimeEnv, userdata: []coral.io.Byte) void = null,
call: *const fn (env: *RuntimeEnv, userdata: []coral.io.Byte, frame: Frame) RuntimeError!?*RuntimeRef = default_call,
to_string: *const fn (env: *RuntimeEnv, userdata: []coral.io.Byte) coral.io.AllocationError!*RuntimeRef = default_to_string,
call: *const fn (env: *RuntimeEnv, userdata: []coral.io.Byte, frame: *const Frame) RuntimeError!?*RuntimeRef = default_call,
get: *const fn (env: *RuntimeEnv, userdata: []coral.io.Byte, index: *const RuntimeRef) RuntimeError!?*RuntimeRef = default_get,
set: *const fn (env: *RuntimeEnv, userdata: []coral.io.Byte, value: *const RuntimeRef, value: ?*const RuntimeRef) RuntimeError!void = default_set,
fn default_call(env: *RuntimeEnv, _: []coral.io.Byte, _: Frame) RuntimeError!?*RuntimeRef {
fn default_call(env: *RuntimeEnv, _: []coral.io.Byte, _: *const Frame) RuntimeError!?*RuntimeRef {
return env.raise(error.BadOperation, "this dynamic object is not callable", .{});
}
@ -972,6 +1006,10 @@ pub const Typeinfo = struct {
fn default_set(env: *RuntimeEnv, _: []coral.io.Byte, _: *const RuntimeRef, _: ?*const RuntimeRef) RuntimeError!void {
return env.raise(error.BadOperation, "this dynamic object is not set-indexable", .{});
}
fn default_to_string(env: *RuntimeEnv, _: []coral.io.Byte) coral.io.AllocationError!*RuntimeRef {
return env.new_string("{}");
}
};
pub fn assert(env: *RuntimeEnv, condition: bool) RuntimeError!void {

109
source/ona/kym/Chunk.zig
View File

@ -2,8 +2,6 @@ const app = @import("../app.zig");
const Compiler = @import("./Compiler.zig");
const builtin = @import("builtin");
const coral = @import("coral");
const file = @import("../file.zig");
@ -15,6 +13,8 @@ const tree = @import("./tree.zig");
name: *kym.RuntimeRef,
arity: u8,
opcodes: OpcodeList,
lines: LineList,
cursor: usize,
constants: ConstList,
bindings: []?*kym.RuntimeRef,
@ -27,7 +27,9 @@ const Builtin = enum {
const ConstList = coral.list.Stack(*kym.RuntimeRef);
const OpcodeList = coral.list.Stack(union (enum) {
const LineList = coral.list.Stack(u32);
pub const Opcode = union (enum) {
ret,
pop,
push_nil,
@ -64,7 +66,9 @@ const OpcodeList = coral.list.Stack(union (enum) {
jt: u32,
jf: u32,
});
};
const OpcodeList = coral.list.Stack(Opcode);
const Self = @This();
@ -99,26 +103,26 @@ pub fn dump(chunk: Self, env: *kym.RuntimeEnv) kym.RuntimeError!*kym.RuntimeRef
coral.debug.assert(string != null);
break: print coral.utf8.print_formatted(writer, "push const <{value}>\n", .{.value = string.?});
break: print coral.utf8.print_formatted(writer, "push const ({value})\n", .{.value = string.?});
},
.push_local => |push_local| coral.utf8.print_formatted(writer, "push local <{local}>\n", .{
.push_local => |push_local| coral.utf8.print_formatted(writer, "push local ({local})\n", .{
.local = push_local,
}),
.push_top => coral.utf8.print_string(writer, "push top\n"),
.push_table => |push_table| coral.utf8.print_formatted(writer, "push table <{count}>\n", .{
.push_table => |push_table| coral.utf8.print_formatted(writer, "push table ({count})\n", .{
.count = push_table,
}),
.push_boxed => coral.utf8.print_string(writer, "push boxed\n"),
.push_binding => |push_binding| coral.utf8.print_formatted(writer, "push binding <{binding}>\n", .{
.push_binding => |push_binding| coral.utf8.print_formatted(writer, "push binding ({binding})\n", .{
.binding = push_binding,
}),
.push_builtin => |push_builtin| coral.utf8.print_formatted(writer, "push builtin <{builtin}>\n", .{
.push_builtin => |push_builtin| coral.utf8.print_formatted(writer, "push builtin ({builtin})\n", .{
.builtin = switch (push_builtin) {
.import => "import",
.print => "print",
@ -127,11 +131,11 @@ pub fn dump(chunk: Self, env: *kym.RuntimeEnv) kym.RuntimeError!*kym.RuntimeRef
},
}),
.bind => |bind| coral.utf8.print_formatted(writer, "bind <{count}>\n", .{
.bind => |bind| coral.utf8.print_formatted(writer, "bind ({count})\n", .{
.count = bind,
}),
.set_local => |local_set| coral.utf8.print_formatted(writer, "set local <{local}>\n", .{
.set_local => |local_set| coral.utf8.print_formatted(writer, "set local ({local})\n", .{
.local = local_set,
}),
@ -139,7 +143,7 @@ pub fn dump(chunk: Self, env: *kym.RuntimeEnv) kym.RuntimeError!*kym.RuntimeRef
.set_box => coral.utf8.print_string(writer, "set box\n"),
.get_dynamic => coral.utf8.print_string(writer, "get dynamic\n"),
.set_dynamic => coral.utf8.print_string(writer, "set dynamic\n"),
.call => |call| coral.utf8.print_formatted(writer, "call <{count}>\n", .{.count = call}),
.call => |call| coral.utf8.print_formatted(writer, "call ({count})\n", .{.count = call}),
.not => coral.utf8.print_string(writer, "not\n"),
.neg => coral.utf8.print_string(writer, "neg\n"),
.add => coral.utf8.print_string(writer, "add\n"),
@ -151,19 +155,19 @@ pub fn dump(chunk: Self, env: *kym.RuntimeEnv) kym.RuntimeError!*kym.RuntimeRef
.clt => coral.utf8.print_string(writer, "clt\n"),
.cge => coral.utf8.print_string(writer, "cge\n"),
.cle => coral.utf8.print_string(writer, "cle\n"),
.jf => |jf| coral.utf8.print_formatted(writer, "jf <{instruction}>\n", .{.instruction = jf}),
.jt => |jt| coral.utf8.print_formatted(writer, "jt <{instruction}>\n", .{.instruction = jt}),
.jf => |jf| coral.utf8.print_formatted(writer, "jf ({instruction})\n", .{.instruction = jf}),
.jt => |jt| coral.utf8.print_formatted(writer, "jt ({instruction})\n", .{.instruction = jt}),
};
}
return env.new_string(buffer.values);
}
pub fn execute(self: Self, env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
var opcode_cursor = @as(u32, 0);
pub fn execute(self: *Self, env: *kym.RuntimeEnv, frame: *const kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
self.cursor = 0;
while (opcode_cursor < self.opcodes.values.len) : (opcode_cursor += 1) {
switch (self.opcodes.values[opcode_cursor]) {
while (self.cursor < self.opcodes.values.len) : (self.cursor += 1) {
switch (self.opcodes.values[self.cursor]) {
.ret => break,
.pop => {
@ -306,27 +310,24 @@ pub fn execute(self: Self, env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeEr
defer env.discard(box);
const boxed = box.as_boxed() orelse {
return env.raise(error.TypeMismatch, "{typename} is not unboxable", .{.typename = box.typename()});
};
if (try env.get_boxed(box)) |unboxed| {
errdefer env.discard(unboxed);
try env.locals.push_one(if (boxed.*) |value| value.acquire() else null);
try env.locals.push_one(unboxed);
} else {
try env.locals.push_one(null);
}
},
.set_box => {
const box = try env.expect(try env.pop_local());
errdefer env.discard(box);
defer env.discard(box);
const boxed = box.as_boxed() orelse {
return env.raise(error.TypeMismatch, "{typename} is not unboxable", .{.typename = box.typename()});
};
const value = try env.expect(try env.pop_local());
if (boxed.*) |value| {
env.discard(value);
}
boxed.* = box;
defer env.discard(box);
try env.set_boxed(box, value);
},
.get_dynamic => {
@ -379,7 +380,7 @@ pub fn execute(self: Self, env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeEr
defer env.pop_frame();
break: call try env.call_frame(callable, call_frame);
break: call try env.call_frame(&call_frame);
};
errdefer {
@ -532,10 +533,10 @@ pub fn execute(self: Self, env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeEr
defer env.discard(condition);
if (!condition.is_truthy()) {
opcode_cursor = jf;
self.cursor = jf;
}
} else {
opcode_cursor = jf;
self.cursor = jf;
}
},
@ -544,7 +545,7 @@ pub fn execute(self: Self, env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeEr
defer env.discard(condition);
if (condition.is_truthy()) {
opcode_cursor = jt;
self.cursor = jt;
}
}
},
@ -576,13 +577,15 @@ pub fn free(self: *Self, env: *kym.RuntimeEnv) void {
self.bindings = &.{};
}
pub fn make(env: *kym.RuntimeEnv, name: *const kym.RuntimeRef, environment: *const tree.Environment) kym.RuntimeError!Self {
pub fn make(env: *kym.RuntimeEnv, name: []const coral.io.Byte, environment: *const tree.Environment) kym.RuntimeError!Self {
var chunk = Self{
.name = name.acquire(),
.name = try env.new_symbol(name),
.opcodes = OpcodeList.make(env.allocator),
.constants = ConstList.make(env.allocator),
.lines = LineList.make(env.allocator),
.bindings = &.{},
.arity = environment.argument_count,
.cursor = 0,
};
var compiler = Compiler{
@ -595,17 +598,17 @@ pub fn make(env: *kym.RuntimeEnv, name: *const kym.RuntimeRef, environment: *con
return chunk;
}
fn syscall_import(env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
fn syscall_import(env: *kym.RuntimeEnv, frame: *const kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
return env.import(file.Path.from(&.{try env.unwrap_string(try frame.expect_arg(env, 0))}));
}
fn syscall_print(env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
fn syscall_print(env: *kym.RuntimeEnv, frame: *const kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
env.print(try env.unwrap_string(try frame.expect_arg(env, 0)));
return null;
}
fn syscall_vec2(env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
fn syscall_vec2(env: *kym.RuntimeEnv, frame: *const kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
const x = @as(f32, @floatCast(try env.unwrap_float(try frame.expect_arg(env, 0))));
if (frame.has_arg(env, 1)) |y| {
@ -615,7 +618,7 @@ fn syscall_vec2(env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeError!?*kym.R
return env.new_vector2(x, x);
}
fn syscall_vec3(env: *kym.RuntimeEnv, frame: kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
fn syscall_vec3(env: *kym.RuntimeEnv, frame: *const kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
const x = @as(f32, @floatCast(try env.unwrap_float(try frame.expect_arg(env, 0))));
if (frame.has_arg(env, 1)) |y| {
@ -634,22 +637,22 @@ pub const typeinfo = &kym.Typeinfo{
.name = "lambda",
.destruct = typeinfo_destruct,
.call = typeinfo_call,
.to_string = typeinfo_to_string,
};
fn typeinfo_call(env: *kym.RuntimeEnv, userdata: []coral.io.Byte, frame: kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
const chunk = @as(*Self, @ptrCast(@alignCast(userdata)));
if (frame.arg_count < chunk.arity) {
return env.raise(error.BadOperation, "expected `{expected_count}` {noun}, {provided_count} provided", .{
.expected_count = frame.arg_count,
.provided_count = chunk.arity,
.noun = if (frame.arg_count == 1) "argument" else "arguments",
});
}
return chunk.execute(env, frame);
fn typeinfo_call(env: *kym.RuntimeEnv, userdata: []coral.io.Byte, frame: *const kym.Frame) kym.RuntimeError!?*kym.RuntimeRef {
return @as(*Self, @ptrCast(@alignCast(userdata))).execute(env, frame);
}
fn typeinfo_destruct(env: *kym.RuntimeEnv, userdata: []coral.io.Byte) void {
@as(*Self, @ptrCast(@alignCast(userdata))).free(env);
}
fn typeinfo_to_string(env: *kym.RuntimeEnv, userdata: []coral.io.Byte) coral.io.AllocationError!*kym.RuntimeRef {
return env.to_string(@as(*Self, @ptrCast(@alignCast(userdata))).name);
}
pub fn write(self: *Self, line: u32, opcode: Opcode) coral.io.AllocationError!void {
try self.opcodes.push_one(opcode);
try self.lines.push_one(line);
}

86
source/ona/kym/Compiler.zig
View File

@ -37,30 +37,30 @@ fn compile_expression(self: Self, environment: *const tree.Environment, expressi
};
switch (expression.kind) {
.nil_literal => try self.chunk.opcodes.push_one(.push_nil),
.true_literal => try self.chunk.opcodes.push_one(.push_true),
.false_literal => try self.chunk.opcodes.push_one(.push_false),
.nil_literal => try self.chunk.write(expression.line, .push_nil),
.true_literal => try self.chunk.write(expression.line, .push_true),
.false_literal => try self.chunk.write(expression.line, .push_false),
.number_literal => |literal| {
for (literal) |codepoint| {
if (codepoint == '.') {
return self.chunk.opcodes.push_one(.{
return self.chunk.write(expression.line, .{
.push_const = try self.declare_float(number_format.parse(literal, kym.Float) orelse unreachable),
});
}
}
try self.chunk.opcodes.push_one(.{
try self.chunk.write(expression.line, .{
.push_const = try self.declare_fixed(number_format.parse(literal, kym.Fixed) orelse unreachable),
});
},
.string_literal => |literal| {
try self.chunk.opcodes.push_one(.{.push_const = try self.declare_string(literal)});
try self.chunk.write(expression.line, .{.push_const = try self.declare_string(literal)});
},
.symbol_literal => |literal| {
try self.chunk.opcodes.push_one(.{.push_const = try self.declare_symbol(literal)});
try self.chunk.write(expression.line, .{.push_const = try self.declare_symbol(literal)});
},
.table_construct => |table_construct| {
@ -71,13 +71,13 @@ fn compile_expression(self: Self, environment: *const tree.Environment, expressi
try self.compile_expression(environment, entry, null);
if (entry.kind != .key_value) {
try self.chunk.opcodes.push_one(.push_top);
try self.chunk.write(expression.line, .push_top);
}
field_count += 1;
}
try self.chunk.opcodes.push_one(.{.push_table = field_count});
try self.chunk.write(expression.line, .{.push_table = field_count});
},
.key_value => |key_value| {
@ -86,16 +86,12 @@ fn compile_expression(self: Self, environment: *const tree.Environment, expressi
},
.lambda_construct => |lambda_construct| {
const anonymous_chunk_name = try self.env.new_symbol(name orelse "<lambda>");
defer self.env.discard(anonymous_chunk_name);
var chunk = try Chunk.make(self.env, anonymous_chunk_name, lambda_construct.environment);
var chunk = try Chunk.make(self.env, name orelse "<lambda>", lambda_construct.environment);
errdefer chunk.free(self.env);
if (lambda_construct.environment.capture_count == 0) {
try self.chunk.opcodes.push_one(.{.push_const = try self.declare_chunk(chunk)});
try self.chunk.write(expression.line, .{.push_const = try self.declare_chunk(chunk)});
} else {
const lambda_captures = lambda_construct.environment.get_captures();
var index = lambda_captures.len;
@ -103,14 +99,14 @@ fn compile_expression(self: Self, environment: *const tree.Environment, expressi
while (index != 0) {
index -= 1;
try self.chunk.opcodes.push_one(switch (lambda_captures[index]) {
try self.chunk.write(expression.line, switch (lambda_captures[index]) {
.declaration_index => |declaration_index| .{.push_local = declaration_index},
.capture_index => |capture_index| .{.push_binding = capture_index},
});
}
try self.chunk.opcodes.push_one(.{.push_const = try self.declare_chunk(chunk)});
try self.chunk.opcodes.push_one(.{.bind = lambda_construct.environment.capture_count});
try self.chunk.write(expression.line, .{.push_const = try self.declare_chunk(chunk)});
try self.chunk.write(expression.line, .{.bind = lambda_construct.environment.capture_count});
}
},
@ -118,7 +114,7 @@ fn compile_expression(self: Self, environment: *const tree.Environment, expressi
try self.compile_expression(environment, binary_op.lhs_operand, null);
try self.compile_expression(environment, binary_op.rhs_operand, null);
try self.chunk.opcodes.push_one(switch (binary_op.operation) {
try self.chunk.write(expression.line, switch (binary_op.operation) {
.addition => .add,
.subtraction => .sub,
.multiplication => .mul,
@ -134,7 +130,7 @@ fn compile_expression(self: Self, environment: *const tree.Environment, expressi
.unary_op => |unary_op| {
try self.compile_expression(environment, unary_op.operand, null);
try self.chunk.opcodes.push_one(switch (unary_op.operation) {
try self.chunk.write(expression.line, switch (unary_op.operation) {
.boolean_negation => .not,
.numeric_negation => .neg,
});
@ -144,25 +140,25 @@ fn compile_expression(self: Self, environment: *const tree.Environment, expressi
const argument_count = try self.compile_argument(environment, invoke.argument);
try self.compile_expression(environment, invoke.object, null);
try self.chunk.opcodes.push_one(.{.call = argument_count});
try self.chunk.write(expression.line, .{.call = argument_count});
},
.group => |group| try self.compile_expression(environment, group, null),
.import_builtin => try self.chunk.opcodes.push_one(.{.push_builtin = .import}),
.print_builtin => try self.chunk.opcodes.push_one(.{.push_builtin = .print}),
.vec2_builtin => try self.chunk.opcodes.push_one(.{.push_builtin = .vec2}),
.vec3_builtin => try self.chunk.opcodes.push_one(.{.push_builtin = .vec3}),
.import_builtin => try self.chunk.write(expression.line, .{.push_builtin = .import}),
.print_builtin => try self.chunk.write(expression.line, .{.push_builtin = .print}),
.vec2_builtin => try self.chunk.write(expression.line, .{.push_builtin = .vec2}),
.vec3_builtin => try self.chunk.write(expression.line, .{.push_builtin = .vec3}),
.declaration_get => |declaration_get| {
if (get_local_index(environment, declaration_get.declaration)) |index| {
return self.chunk.opcodes.push_one(.{.push_local = index});
return self.chunk.write(expression.line, .{.push_local = index});
}
if (try self.get_binding_index(environment, declaration_get.declaration)) |index| {
try self.chunk.opcodes.push_one(.{.push_binding = index});
try self.chunk.write(expression.line, .{.push_binding = index});
if (is_declaration_boxed(declaration_get.declaration)) {
try self.chunk.opcodes.push_one(.get_box);
try self.chunk.write(expression.line, .get_box);
}
return;
@ -175,15 +171,15 @@ fn compile_expression(self: Self, environment: *const tree.Environment, expressi
if (get_local_index(environment, declaration_set.declaration)) |index| {
try self.compile_expression(environment, declaration_set.assign, null);
return self.chunk.opcodes.push_one(.{.set_local = index});
return self.chunk.write(expression.line, .{.set_local = index});
}
if (try self.get_binding_index(environment, declaration_set.declaration)) |index| {
try self.chunk.opcodes.push_one(.{.push_binding = index});
try self.chunk.write(expression.line, .{.push_binding = index});
try self.compile_expression(environment, declaration_set.assign, null);
if (is_declaration_boxed(declaration_set.declaration)) {
try self.chunk.opcodes.push_one(.set_box);
try self.chunk.write(expression.line, .set_box);
}
return;
@ -194,28 +190,28 @@ fn compile_expression(self: Self, environment: *const tree.Environment, expressi
.field_get => |field_get| {
try self.compile_expression(environment, field_get.object, null);
try self.chunk.opcodes.push_one(.{.push_const = try self.declare_symbol(field_get.identifier)});
try self.chunk.opcodes.push_one(.get_dynamic);
try self.chunk.write(expression.line, .{.push_const = try self.declare_symbol(field_get.identifier)});
try self.chunk.write(expression.line, .get_dynamic);
},
.field_set => |field_set| {
try self.compile_expression(environment, field_set.object, null);
try self.chunk.opcodes.push_one(.{.push_const = try self.declare_symbol(field_set.identifier)});
try self.chunk.write(expression.line, .{.push_const = try self.declare_symbol(field_set.identifier)});
try self.compile_expression(environment, field_set.assign, null);
try self.chunk.opcodes.push_one(.set_dynamic);
try self.chunk.write(expression.line, .set_dynamic);
},
.subscript_get => |subscript_get| {
try self.compile_expression(environment, subscript_get.object, null);
try self.compile_expression(environment, subscript_get.index, null);
try self.chunk.opcodes.push_one(.get_dynamic);
try self.chunk.write(expression.line, .get_dynamic);
},
.subscript_set => |subscript_set| {
try self.compile_expression(environment, subscript_set.object, null);
try self.compile_expression(environment, subscript_set.index, null);
try self.compile_expression(environment, subscript_set.assign, null);
try self.chunk.opcodes.push_one(.set_dynamic);
try self.chunk.write(expression.line, .set_dynamic);
},
}
}
@ -225,7 +221,7 @@ pub fn compile_environment(self: Self, environment: *const tree.Environment) kym
const last_statement = try self.compile_statement(environment, statement);
if (last_statement.kind != .@"return") {
try self.chunk.opcodes.push_one(.push_nil);
try self.chunk.write(last_statement.line, .push_nil);
}
}
}
@ -239,16 +235,16 @@ fn compile_statement(self: Self, environment: *const tree.Environment, initial_s
if (@"return".returned_expression) |expression| {
try self.compile_expression(environment, expression, null);
} else {
try self.chunk.opcodes.push_one(.push_nil);
try self.chunk.write(current_statement.line, .push_nil);
}
// TODO: Omit ret calls at ends of chunk.
try self.chunk.opcodes.push_one(.ret);
try self.chunk.write(current_statement.line, .ret);
},
.@"while" => |@"while"| {
try self.compile_expression(environment, @"while".loop_expression, null);
try self.chunk.opcodes.push_one(.{.jf = 0});
try self.chunk.write(current_statement.line, .{.jf = 0});
const origin_index = @as(u32, @intCast(self.chunk.opcodes.values.len - 1));
@ -256,12 +252,12 @@ fn compile_statement(self: Self, environment: *const tree.Environment, initial_s
self.chunk.opcodes.values[origin_index].jf = @intCast(self.chunk.opcodes.values.len - 1);
try self.compile_expression(environment, @"while".loop_expression, null);
try self.chunk.opcodes.push_one(.{.jt = origin_index});
try self.chunk.write(current_statement.line, .{.jt = origin_index});
},
.@"if" => |@"if"| {
try self.compile_expression(environment, @"if".then_expression, null);
try self.chunk.opcodes.push_one(.{.jf = 0});
try self.chunk.write(current_statement.line, .{.jf = 0});
const origin_index = @as(u32, @intCast(self.chunk.opcodes.values.len - 1));
@ -277,7 +273,7 @@ fn compile_statement(self: Self, environment: *const tree.Environment, initial_s
try self.compile_expression(environment, declare.initial_expression, declare.declaration.identifier);
if (is_declaration_boxed(declare.declaration)) {
try self.chunk.opcodes.push_one(.push_boxed);
try self.chunk.write(current_statement.line, .push_boxed);
}
},
@ -285,7 +281,7 @@ fn compile_statement(self: Self, environment: *const tree.Environment, initial_s
try self.compile_expression(environment, top_expression, null);
if (top_expression.kind == .invoke) {
try self.chunk.opcodes.push_one(.pop);
try self.chunk.write(current_statement.line, .pop);
}
},
}

99
source/ona/kym/Expr.zig
View File

@ -7,6 +7,7 @@ const tokens = @import("./tokens.zig");
const tree = @import("./tree.zig");
next: ?*const Self = null,
line: u32,
kind: union (enum) {
nil_literal,
@ -80,6 +81,8 @@ pub const BinaryOp = struct {
const unnecessary_temp = expression;
expression = try root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{
.binary_op = .{
.rhs_operand = try parse_next(root, stream, environment),
@ -173,6 +176,8 @@ pub fn parse(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Enviro
}
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = switch (expression.kind) {
.declaration_get => |declaration_get| convert: {
if (declaration_get.declaration.is.readonly) {
@ -239,7 +244,7 @@ fn parse_factor(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Env
const unnecessary_temp = expression;
expression = try root.create_expr(.{
.next = null,
.line = stream.lines_stepped,
.kind = .{
.field_get = .{
@ -263,7 +268,7 @@ fn parse_factor(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Env
const unnecessary_temp = expression;
expression = try root.create_expr(.{
.next = null,
.line = stream.lines_stepped,
.kind = .{
.subscript_get = .{
@ -281,6 +286,8 @@ fn parse_factor(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Env
},
.symbol_paren_left => {
const lines_stepped = stream.lines_stepped;
stream.skip_newlines();
var first_argument = @as(?*Self, null);
@ -310,7 +317,7 @@ fn parse_factor(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Env
const unnecessary_temp = expression;
expression = try root.create_expr(.{
.next = null,
.line = lines_stepped,
.kind = .{
.invoke = .{
@ -341,37 +348,55 @@ fn parse_operand(root: *tree.Root, stream: *tokens.Stream, environment: *tree.En
stream.skip_newlines();
return root.create_expr(.{.kind = .{.group = expression}});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{.group = expression},
});
},
.keyword_nil => {
stream.skip_newlines();
return root.create_expr(.{.kind = .nil_literal});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .nil_literal,
});
},
.keyword_true => {
stream.skip_newlines();
return root.create_expr(.{.kind = .true_literal});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .true_literal,
});
},
.keyword_false => {
stream.skip_newlines();
return root.create_expr(.{.kind = .false_literal});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .false_literal,
});
},
.number => |value| {
stream.skip_newlines();
return root.create_expr(.{.kind = .{.number_literal = value}});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{.number_literal = value},
});
},
.string => |value| {
stream.skip_newlines();
return root.create_expr(.{.kind = .{.string_literal = value}});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{.string_literal = value},
});
},
.symbol_at => {
@ -385,19 +410,31 @@ fn parse_operand(root: *tree.Root, stream: *tokens.Stream, environment: *tree.En
stream.skip_newlines();
if (coral.io.are_equal(identifier, "import")) {
return root.create_expr(.{.kind = .import_builtin});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .import_builtin,
});
}
if (coral.io.are_equal(identifier, "print")) {
return root.create_expr(.{.kind = .print_builtin});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .print_builtin,
});
}
if (coral.io.are_equal(identifier, "vec2")) {
return root.create_expr(.{.kind = .vec2_builtin});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .vec2_builtin,
});
}
if (coral.io.are_equal(identifier, "vec3")) {
return root.create_expr(.{.kind = .vec3_builtin});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .vec3_builtin,
});
}
return root.report_error(stream, "unexpected identifier after `@`", .{});
@ -413,13 +450,18 @@ fn parse_operand(root: *tree.Root, stream: *tokens.Stream, environment: *tree.En
stream.skip_newlines();
return root.create_expr(.{.kind = .{.symbol_literal = identifier}});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{.symbol_literal = identifier},
});
},
.identifier => |identifier| {
stream.skip_newlines();
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{
.declaration_get = .{
.declaration = (try environment.resolve_declaration(identifier)) orelse {
@ -486,14 +528,20 @@ fn parse_operand(root: *tree.Root, stream: *tokens.Stream, environment: *tree.En
stream.skip_newlines();
return root.create_expr(.{.kind = .{.lambda_construct = .{.environment = lambda_environment}}});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{.lambda_construct = .{.environment = lambda_environment}},
});
},
.symbol_brace_left => {
stream.skip_newlines();
if (stream.token == .symbol_brace_right) {
return root.create_expr(.{.kind = .{.table_construct = .{.entry = null}}});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{.table_construct = .{.entry = null}},
});
}
const first_entry = try parse_table_entry(root, stream, environment);
@ -518,14 +566,17 @@ fn parse_operand(root: *tree.Root, stream: *tokens.Stream, environment: *tree.En
stream.skip_newlines();
return root.create_expr(.{.kind = .{.table_construct = .{.entry = first_entry}}});
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{.table_construct = .{.entry = first_entry}},
});
},
.symbol_minus => {
stream.skip_newlines();
return root.create_expr(.{
.next = null,
.line = stream.lines_stepped,
.kind = .{
.unary_op = .{
@ -540,7 +591,7 @@ fn parse_operand(root: *tree.Root, stream: *tokens.Stream, environment: *tree.En
stream.skip_newlines();
return root.create_expr(.{
.next = null,
.line = stream.lines_stepped,
.kind = .{
.unary_op = .{
@ -574,10 +625,16 @@ fn parse_table_entry(root: *tree.Root, stream: *tokens.Stream, environment: *tre
stream.skip_newlines();
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{
.key_value = .{
.value = try parse(root, stream, environment),
.key = try root.create_expr(.{.kind = .{.symbol_literal = field}}),
.key = try root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{.symbol_literal = field},
}),
},
},
});
@ -601,6 +658,8 @@ fn parse_table_entry(root: *tree.Root, stream: *tokens.Stream, environment: *tre
stream.skip_newlines();
return root.create_expr(.{
.line = stream.lines_stepped,
.kind = .{
.key_value = .{
.value = try parse(root, stream, environment),

22
source/ona/kym/Stmt.zig
View File

@ -7,6 +7,7 @@ const tokens = @import("./tokens.zig");
const tree = @import("./tree.zig");
next: ?*const Self = null,
line: u32,
kind: union (enum) {
top_expression: *const Expr,
@ -45,6 +46,7 @@ pub fn parse(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Enviro
if (stream.token != .end and stream.token != .newline) {
return root.create_stmt(.{
.line = stream.lines_stepped,
.kind = .{.@"return" = .{.returned_expression = try Expr.parse(root, stream, environment)}},
});
}
@ -53,7 +55,10 @@ pub fn parse(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Enviro
return root.report_error(stream, "expected end or newline after return statement", .{});
}
return root.create_stmt(.{.kind = .{.@"return" = .{.returned_expression = null}}});
return root.create_stmt(.{
.line = stream.lines_stepped,
.kind = .{.@"return" = .{.returned_expression = null}},
});
},
.keyword_while => {
@ -83,6 +88,8 @@ pub fn parse(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Enviro
}
return root.create_stmt(.{
.line = stream.lines_stepped,
.kind = .{
.@"while" = .{
.loop = first_statement,
@ -113,6 +120,8 @@ pub fn parse(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Enviro
stream.skip_newlines();
return root.create_stmt(.{
.line = stream.lines_stepped,
.kind = .{
.declare = .{
.initial_expression = try Expr.parse(root, stream, environment),
@ -135,7 +144,10 @@ pub fn parse(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Enviro
.keyword_if => return parse_branch(root, stream, environment),
else => return root.create_stmt(.{.kind = .{.top_expression = try Expr.parse(root, stream, environment)}}),
else => return root.create_stmt(.{
.line = stream.lines_stepped,
.kind = .{.top_expression = try Expr.parse(root, stream, environment)},
}),
}
}
@ -159,7 +171,7 @@ fn parse_branch(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Env
stream.skip_newlines();
return root.create_stmt(.{
.next = null,
.line = stream.lines_stepped,
.kind = .{
.@"if" = .{
@ -193,7 +205,7 @@ fn parse_branch(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Env
stream.skip_newlines();
return root.create_stmt(.{
.next = null,
.line = stream.lines_stepped,
.kind = .{
.@"if" = .{
@ -207,7 +219,7 @@ fn parse_branch(root: *tree.Root, stream: *tokens.Stream, environment: *tree.Env
.keyword_elif => {
return root.create_stmt(.{
.next = null,
.line = stream.lines_stepped,
.kind = .{
.@"if" = .{

2
source/ona/kym/tokens.zig
View File

@ -103,7 +103,7 @@ pub const Token = union(enum) {
pub const Stream = struct {
source: []const coral.io.Byte,
lines_stepped: usize = 1,
lines_stepped: u32 = 1,
token: Token = .newline,
pub fn skip_newlines(self: *Stream) void {