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8 changed files with 199 additions and 458 deletions
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20
build.zig
View File

@ -18,27 +18,17 @@ pub fn build(b: *std.Build) void {
}); });
b.installArtifact(create: { b.installArtifact(create: {
const compile_step = b.addExecutable(.{ const runner_exe = b.addExecutable(.{
.name = "runner", .name = "runner",
.root_source_file = .{ .path = "source/runner.zig" }, .root_source_file = .{ .path = "source/runner.zig" },
.target = target, .target = target,
.optimize = optimize, .optimize = optimize,
}); });
compile_step.addModule("ona", ona_module); runner_exe.addModule("ona", ona_module);
compile_step.linkLibC(); runner_exe.linkLibC();
compile_step.linkSystemLibrary("SDL2"); runner_exe.linkSystemLibrary("SDL2");
break: create compile_step; break: create runner_exe;
});
b.step("test", "Run unit tests").dependOn(create: {
const tests = b.addTest(.{
.root_source_file = .{.path = "source/test.zig"},
.target = target,
.optimize = optimize,
});
break: create &tests.step;
}); });
} }

39
source/coral/io.zig
View File

@ -24,30 +24,29 @@ pub const Allocator = struct {
pub fn bind(comptime State: type, state: *State, comptime actions: Actions(State)) Allocator { pub fn bind(comptime State: type, state: *State, comptime actions: Actions(State)) Allocator {
const is_zero_aligned = @alignOf(State) == 0; const is_zero_aligned = @alignOf(State) == 0;
const ErasedActions = struct {
fn deallocate(context: *anyopaque, allocation: []Byte) void {
if (is_zero_aligned) {
return actions.deallocator(@ptrCast(context), allocation);
}
return actions.deallocate(@ptrCast(@alignCast(context)), allocation);
}
fn reallocate(context: *anyopaque, return_address: usize, existing_allocation: ?[]Byte, size: usize) AllocationError![]Byte {
if (is_zero_aligned) {
return actions.reallocator(@ptrCast(context), return_address, existing_allocation, size);
}
return actions.reallocate(@ptrCast(@alignCast(context)), return_address, existing_allocation, size);
}
};
return .{ return .{
.context = if (is_zero_aligned) state else @ptrCast(state), .context = if (is_zero_aligned) state else @ptrCast(state),
.actions = &.{ .actions = &.{
.deallocate = ErasedActions.deallocate, .deallocate = struct {
.reallocate = ErasedActions.reallocate, fn deallocate(context: *anyopaque, allocation: []Byte) void {
if (is_zero_aligned) {
return actions.deallocator(@ptrCast(context), allocation);
}
return actions.deallocate(@ptrCast(@alignCast(context)), allocation);
}
}.deallocate,
.reallocate = struct {
fn reallocate(context: *anyopaque, return_address: usize, existing_allocation: ?[]Byte, size: usize) AllocationError![]Byte {
if (is_zero_aligned) {
return actions.reallocator(@ptrCast(context), return_address, existing_allocation, size);
}
return actions.reallocate(@ptrCast(@alignCast(context)), return_address, existing_allocation, size);
}
}.reallocate,
} }
}; };
} }

172
source/coral/utf8.zig
View File

@ -1,5 +1,3 @@
const debug = @import("./debug.zig");
const io = @import("./io.zig"); const io = @import("./io.zig");
const math = @import("./math.zig"); const math = @import("./math.zig");
@ -8,11 +6,6 @@ pub const DecimalFormat = struct {
delimiter: []const io.Byte, delimiter: []const io.Byte,
positive_prefix: enum {none, plus, space}, positive_prefix: enum {none, plus, space},
const default = DecimalFormat{
.delimiter = "",
.positive_prefix = .none,
};
pub fn parse(self: DecimalFormat, utf8: []const io.Byte, comptime Decimal: type) ?Decimal { pub fn parse(self: DecimalFormat, utf8: []const io.Byte, comptime Decimal: type) ?Decimal {
if (utf8.len == 0) { if (utf8.len == 0) {
return null; return null;
@ -111,170 +104,5 @@ pub const DecimalFormat = struct {
else => @compileError("`" ++ @typeName(Decimal) ++ "` cannot be formatted as a decimal string"), else => @compileError("`" ++ @typeName(Decimal) ++ "` cannot be formatted as a decimal string"),
} }
} }
pub fn print(self: DecimalFormat, writer: io.Writer, value: anytype) PrintError!void {
if (value == 0) {
return print_string(writer, switch (self.positive_prefix) {
.none => "0",
.plus => "+0",
.space => " 0",
});
}
const ValueType = @TypeOf(value);
switch (@typeInfo(ValueType)) {
.Int => |int| {
const radix = 10;
var buffer = [_]u8{0} ** (1 + math.max(int.bits, 1));
var buffer_start = buffer.len - 1;
{
var decomposable_value = value;
while (decomposable_value != 0) : (buffer_start -= 1) {
buffer[buffer_start] = @intCast((decomposable_value % radix) + '0');
decomposable_value = (decomposable_value / radix);
}
}
if (int.signedness == .unsigned and value < 0) {
buffer[buffer_start] = '-';
} else {
switch (self.positive_prefix) {
.none => buffer_start += 1,
.plus => buffer[buffer_start] = '+',
.space => buffer[buffer_start] = ' ',
}
}
try print_string(writer, buffer[buffer_start ..]);
},
else => unformattableMessage(ValueType),
}
}
}; };
pub const HexadecimalFormat = struct {
delimiter: []const u8 = "",
positive_prefix: enum {none, plus, space} = .none,
casing: enum {lower, upper} = .lower,
const default = HexadecimalFormat{
.delimiter = "",
.positive_prefix = .none,
.casing = .lower,
};
pub fn print(self: HexadecimalFormat, writer: io.Writer, value: anytype) PrintError!void {
// TODO: Implement.
_ = self;
_ = writer;
_ = value;
unreachable;
}
};
pub const PrintError = error {
PrintFailed,
PrintIncomplete,
};
pub fn print_string(writer: io.Writer, utf8: []const io.Byte) PrintError!void {
if ((writer.invoke(utf8) orelse return error.PrintFailed) != utf8.len) {
return error.PrintIncomplete;
}
}
pub fn print_formatted(writer: io.Writer, comptime format: []const u8, arguments: anytype) PrintError!void {
switch (@typeInfo(@TypeOf(arguments))) {
.Struct => |arguments_struct| {
comptime var arg_index = 0;
comptime var head = 0;
comptime var tail = 0;
inline while (tail < format.len) : (tail += 1) {
if (format[tail] == '{') {
if (tail > format.len) {
@compileError("expected an idenifier after opening `{`");
}
tail += 1;
switch (format[tail]) {
'{' => {
try print_string(writer, format[head .. (tail - 1)]);
tail += 1;
head = tail;
},
'}' => {
if (!arguments_struct.is_tuple) {
@compileError("all format specifiers must be named when using a named struct");
}
try print_string(writer, arguments[arg_index]);
arg_index += 1;
tail += 1;
head = tail;
},
else => {
if (arguments_struct.is_tuple) {
@compileError("format specifiers cannot be named when using a tuple struct");
}
try print_string(writer, format[head .. (tail - 1)]);
head = tail;
tail += 1;
if (tail >= format.len) {
@compileError("expected closing `}` or another `{` after opening `{`");
}
debug.assert(tail < format.len);
inline while (format[tail] != '}') {
tail += 1;
debug.assert(tail < format.len);
}
try print_value(writer, @field(arguments, format[head .. tail]));
tail += 1;
head = tail;
}
}
}
}
},
else => @compileError("`arguments` must be a struct type"),
}
}
noinline fn print_value(writer: io.Writer, value: anytype) PrintError!void {
const Value = @TypeOf(value);
return switch (@typeInfo(Value)) {
.Int => DecimalFormat.default.print(writer, value),
.Float => DecimalFormat.default.print(writer, value),
.Pointer => |pointer| switch (pointer.size) {
.One, .Many, .C => HexadecimalFormat.default.print(writer, @intFromPtr(value)),
.Slice => if (pointer.child == u8) print_string(writer, value) else @compileError(unformattableMessage(Value)),
},
else => @compileError(unformattableMessage(Value)),
};
}
fn unformattableMessage(comptime Value: type) []const u8 {
return "type `" ++ @typeName(Value) ++ "` is not formattable with this formatter";
}

8
source/ona/app.zig
View File

@ -21,14 +21,14 @@ pub const Manifest = struct {
defer env.discard(title); defer env.discard(title);
const title_string = try env.get_string(title); const title_string = try env.to_string(title);
const width = @as(u16, get: { const width = @as(u16, get: {
const ref = try env.get_field(manifest, "width"); const ref = try env.get_field(manifest, "width");
defer env.discard(ref); defer env.discard(ref);
break: get @intFromFloat(env.get_float(ref) catch @as(f64, @floatFromInt(self.width))); break: get @intFromFloat(env.to_float(ref) catch @as(f64, @floatFromInt(self.width)));
}); });
const height = @as(u16, get: { const height = @as(u16, get: {
@ -36,7 +36,7 @@ pub const Manifest = struct {
defer env.discard(ref); defer env.discard(ref);
break: get @intFromFloat(env.get_float(ref) catch @as(f64, @floatFromInt(self.height))); break: get @intFromFloat(env.to_float(ref) catch @as(f64, @floatFromInt(self.height)));
}); });
const tick_rate = @as(f32, get: { const tick_rate = @as(f32, get: {
@ -44,7 +44,7 @@ pub const Manifest = struct {
defer env.discard(ref); defer env.discard(ref);
break: get @floatCast(env.get_float(ref) catch self.tick_rate); break: get @floatCast(env.to_float(ref) catch self.tick_rate);
}); });
{ {

321
source/ona/kym.zig
View File

@ -2,8 +2,6 @@ const Ast = @import("./kym/Ast.zig");
const State = @import("./kym/State.zig"); const State = @import("./kym/State.zig");
const Table = @import("./kym/Table.zig");
const coral = @import("coral"); const coral = @import("coral");
const file = @import("./file.zig"); const file = @import("./file.zig");
@ -158,7 +156,7 @@ pub const ObjectInfo = struct {
call: *const fn (context: CallContext) RuntimeError!*RuntimeRef = default_call, call: *const fn (context: CallContext) RuntimeError!*RuntimeRef = default_call,
clean: *const fn (userdata: []u8) void = default_clean, clean: *const fn (userdata: []u8) void = default_clean,
get: *const fn (context: IndexContext) RuntimeError!*RuntimeRef = default_get, get: *const fn (context: IndexContext) RuntimeError!*RuntimeRef = default_get,
set: *const fn (context: IndexContext, value: *const RuntimeRef) RuntimeError!void = default_set, set: *const fn (context: IndexContext, Any: *const RuntimeRef) RuntimeError!void = default_set,
fn cast(object_info: *const anyopaque) *const ObjectInfo { fn cast(object_info: *const anyopaque) *const ObjectInfo {
return @ptrCast(@alignCast(object_info)); return @ptrCast(@alignCast(object_info));
@ -221,6 +219,119 @@ pub const RuntimeEnv = struct {
data: []const coral.io.Byte, data: []const coral.io.Byte,
}; };
const Table = struct {
state: *State,
fields: FieldTable,
array: ArrayList,
const ArrayList = coral.list.Stack(State.Variant);
const FieldTable = coral.map.Table([]const coral.io.Byte, struct {
field: *State.Object,
value: State.Variant,
const Self = @This();
fn release_objects(self: Self, state: *State) void {
state.release(self.field);
if (self.value == .object) {
state.release(self.value.object);
}
}
}, coral.map.string_table_traits);
fn free(self: *Table) void {
{
var field_iterator = FieldTable.Iterable{.table = &self.fields};
while (field_iterator.next()) |entry| {
entry.value.release_objects(self.state);
}
}
self.fields.free();
self.array.free();
}
fn get_field(self: *Table, field_name: *State.Object) State.Variant {
const field = self.fields.lookup(field_name.userdata) orelse return .nil;
if (field.value == .object) {
return .{.object = self.state.acquire_instance(field.value.object)};
}
return field.value;
}
fn get_index(self: *Table, index: usize) State.Variant {
return self.array.values[index];
}
fn make(allocator: coral.io.Allocator, state: *State) Table {
return .{
.state = state,
.fields = FieldTable.make(allocator),
.array = ArrayList.make(allocator),
};
}
const object_info = ObjectInfo{
.clean = struct {
fn clean(userdata: []u8) void {
@as(*Table, @ptrCast(@alignCast(userdata.ptr))).free();
}
}.clean,
.get = struct {
fn get(context: IndexContext) RuntimeError!*RuntimeRef {
const table = @as(*Table, @ptrCast(@alignCast(context.userdata.ptr)));
switch (try context.index.fetch(context.env)) {
.nil => return context.env.raise(error.BadOperation, "cannot index a table with nil"),
.true => return context.env.raise(error.BadOperation, "cannot index a table with true"),
.false => return context.env.raise(error.BadOperation, "cannot index a table with false"),
.object => |index_object| {
const value = table.get_field(index_object);
errdefer if (value == .object) {
context.env.state.release(value.object);
};
return @ptrFromInt(try context.env.bound_refs.insert(value));
},
.number => |index_number| {
const value = table.get_index(@intFromFloat(index_number));
errdefer if (value == .object) {
context.env.state.release(value.object);
};
return @ptrFromInt(try context.env.bound_refs.insert(value));
},
}
}
}.get,
};
fn set_field(self: *Table, field_name: *State.Object, value: State.Variant) coral.io.AllocationError!void {
const previous_entry = try self.fields.replace(field_name.userdata, .{
.field = field_name,
.value = value,
});
if (previous_entry) |entry| {
entry.value.release_objects(self.state);
}
}
fn set_index(self: *Table, index: usize, value: State.Variant) coral.io.AllocationError!void {
self.array.values[index] = value;
}
};
const VariantSlab = coral.map.Slab(State.Variant); const VariantSlab = coral.map.Slab(State.Variant);
pub fn discard(self: *RuntimeEnv, ref: *RuntimeRef) void { pub fn discard(self: *RuntimeEnv, ref: *RuntimeRef) void {
@ -247,13 +358,14 @@ pub const RuntimeEnv = struct {
var popped = @as(usize, 0); var popped = @as(usize, 0);
while (popped < size) : (popped += 1) { while (popped < size) : (popped += 1) {
try table.set_field( switch (try self.state.pop_value()) {
try to_object(self, try self.state.pop_value()), .object => |field| try table.set_field(field, try self.state.pop_value()),
try self.state.pop_value()); else => return self.raise(error.BadOperation, "attempt to set a non-object field"),
}
} }
} }
const table_object = try self.state.acquire_new(coral.io.bytes_of(&table), &table_info); const table_object = try self.state.acquire_new(coral.io.bytes_of(&table), &Table.object_info);
errdefer self.state.release(table_object); errdefer self.state.release(table_object);
@ -270,79 +382,58 @@ pub const RuntimeEnv = struct {
.not => { .not => {
try self.state.push_value(switch (try self.state.pop_value()) { try self.state.push_value(switch (try self.state.pop_value()) {
.nil => return self.raise(error.BadOperation, "cannot convert nil to true or false"), .nil => return self.raise(error.BadOperation, "cannot not nil"),
.false => .true, .false => .true,
.true => .false, .true => .false,
.number => return self.raise(error.BadOperation, "cannot convert a number to true or false"), .number => return self.raise(error.BadOperation, "cannot not a number"),
.object => return self.raise(error.BadOperation, "cannot convert an object to true or false"), .object => return self.raise(error.BadOperation, "cannot not an object"),
}); });
}, },
.neg => { .neg => {
try self.state.push_value(.{.number = -(try to_number(self, try self.state.pop_value()))}); try self.state.push_value(switch (try self.state.pop_value()) {
.nil => return self.raise(error.BadOperation, "cannot not nil"),
.false => return self.raise(error.BadOperation, "cannot not false"),
.true => return self.raise(error.BadOperation, "cannot not true"),
.number => |number| .{.number = -number},
.object => return self.raise(error.BadOperation, "cannot not an object"),
});
}, },
.add => { .add => {
const lhs_number = try to_number(self, try self.state.pop_value());
const rhs_number = try to_number(self, try self.state.pop_value());
try self.state.push_value(.{.number = lhs_number + rhs_number});
}, },
.sub => { .sub => {
const lhs_number = try to_number(self, try self.state.pop_value());
const rhs_number = try to_number(self, try self.state.pop_value());
try self.state.push_value(.{.number = lhs_number - rhs_number});
}, },
.mul => { .mul => {
const lhs_number = try to_number(self, try self.state.pop_value());
const rhs_number = try to_number(self, try self.state.pop_value());
try self.state.push_value(.{.number = lhs_number * rhs_number});
}, },
.div => { .div => {
const lhs_number = try to_number(self, try self.state.pop_value());
const rhs_number = try to_number(self, try self.state.pop_value());
try self.state.push_value(.{.number = lhs_number / rhs_number});
}, },
.eql => { .eql => {
const lhs = try self.state.pop_value();
const rhs = try self.state.pop_value();
try self.state.push_value(if (lhs.equals(rhs)) .true else .false);
}, },
.cgt => { .cgt => {
const lhs_number = try to_number(self, try self.state.pop_value());
const rhs_number = try to_number(self, try self.state.pop_value());
try self.state.push_value(if (lhs_number > rhs_number) .true else .false);
}, },
.clt => { .clt => {
const lhs_number = try to_number(self, try self.state.pop_value());
const rhs_number = try to_number(self, try self.state.pop_value());
try self.state.push_value(if (lhs_number < rhs_number) .true else .false);
}, },
.cge => { .cge => {
const lhs_number = try to_number(self, try self.state.pop_value());
const rhs_number = try to_number(self, try self.state.pop_value());
try self.state.push_value(if (lhs_number >= rhs_number) .true else .false);
}, },
.cle => { .cle => {
const lhs_number = try to_number(self, try self.state.pop_value());
const rhs_number = try to_number(self, try self.state.pop_value());
try self.state.push_value(if (lhs_number <= rhs_number) .true else .false);
}, },
} }
} }
@ -404,7 +495,7 @@ pub const RuntimeEnv = struct {
defer self.discard(interned_field); defer self.discard(interned_field);
const indexable_object = try to_object(self, try indexable.fetch(self)); const indexable_object = try indexable.fetch_object(self);
return ObjectInfo.cast(indexable_object.userinfo).get(.{ return ObjectInfo.cast(indexable_object.userinfo).get(.{
.env = self, .env = self,
@ -414,20 +505,6 @@ pub const RuntimeEnv = struct {
}); });
} }
pub fn get_float(self: *RuntimeEnv, ref: *const RuntimeRef) RuntimeError!State.Float {
return to_number(self, try ref.fetch(self));
}
pub fn get_string(self: *RuntimeEnv, ref: *const RuntimeRef) RuntimeError![]const u8 {
const object = try to_object(self, try ref.fetch(self));
if (ObjectInfo.cast(object.userinfo) != &string_info) {
return self.raise(error.BadOperation, "object is not a string");
}
return object.userdata;
}
pub fn intern(self: *RuntimeEnv, data: []const u8) RuntimeError!*RuntimeRef { pub fn intern(self: *RuntimeEnv, data: []const u8) RuntimeError!*RuntimeRef {
const data_object = try self.state.acquire_interned(data, &string_info); const data_object = try self.state.acquire_interned(data, &string_info);
@ -455,16 +532,34 @@ pub const RuntimeEnv = struct {
return @ptrFromInt(try self.bound_refs.insert(.{.object = data_object})); return @ptrFromInt(try self.bound_refs.insert(.{.object = data_object}));
} }
pub fn nil(self: *RuntimeEnv) RuntimeError!*RuntimeRef {
return @ptrFromInt(try self.bound_refs.insert(.nil));
}
pub fn raise(self: *RuntimeEnv, runtime_error: RuntimeError, error_message: []const u8) RuntimeError { pub fn raise(self: *RuntimeEnv, runtime_error: RuntimeError, error_message: []const u8) RuntimeError {
// TODO: Print stack trace from state. if (self.err_writer.invoke(error_message) == null) {
coral.utf8.print_formatted(self.err_writer, "{name}@{line}: {message}", .{ return error.SystemFailure;
.name = "???", }
.line = @as(u64, 0),
.message = error_message,
}) catch return error.SystemFailure;
return runtime_error; return runtime_error;
} }
pub fn to_float(self: *RuntimeEnv, ref: *const RuntimeRef) RuntimeError!State.Float {
return ref.fetch_number(self);
}
pub fn to_string(self: *RuntimeEnv, ref: *const RuntimeRef) RuntimeError![]const u8 {
const object = try switch (try ref.fetch(self)) {
.object => |object| object,
else => self.raise(error.BadOperation, "cannot convert to object"),
};
if (ObjectInfo.cast(object.userinfo) != &string_info) {
return self.raise(error.BadOperation, "object is not a string");
}
return object.userdata;
}
}; };
pub const RuntimeError = coral.io.AllocationError || State.PopError || error { pub const RuntimeError = coral.io.AllocationError || State.PopError || error {
@ -477,101 +572,27 @@ pub const RuntimeRef = opaque {
fn fetch(self: *const RuntimeRef, env: *RuntimeEnv) RuntimeError!State.Variant { fn fetch(self: *const RuntimeRef, env: *RuntimeEnv) RuntimeError!State.Variant {
return env.bound_refs.lookup(@intFromPtr(self)) orelse env.raise(error.BadOperation, "stale ref"); return env.bound_refs.lookup(@intFromPtr(self)) orelse env.raise(error.BadOperation, "stale ref");
} }
};
fn table_clean(userdata: []u8) void { fn fetch_number(self: *const RuntimeRef, env: *RuntimeEnv) RuntimeError!State.Float {
@as(*Table, @ptrCast(@alignCast(userdata.ptr))).free(); return switch (try self.fetch(env)) {
} .nil => env.raise(error.BadOperation, "cannot convert nil to number"),
.true => env.raise(error.BadOperation, "cannot convert true to number"),
fn table_get(context: IndexContext) RuntimeError!*RuntimeRef { .false => env.raise(error.BadOperation, "cannot convert false to number"),
const table = @as(*Table, @ptrCast(@alignCast(context.userdata.ptr))); .number => |number| number,
.object => env.raise(error.BadOperation, "cannot convert object to number"),
switch (try context.index.fetch(context.env)) { };
.nil => return context.env.raise(error.BadOperation, "cannot index a table with nil"),
.true => return context.env.raise(error.BadOperation, "cannot index a table with true"),
.false => return context.env.raise(error.BadOperation, "cannot index a table with false"),
.object => |index_object| {
const value = table.get_field(index_object);
errdefer if (value == .object) {
context.env.state.release(value.object);
};
return @ptrFromInt(try context.env.bound_refs.insert(value));
},
.number => |index_number| {
const value = table.get_index(@intFromFloat(index_number));
errdefer if (value == .object) {
context.env.state.release(value.object);
};
return @ptrFromInt(try context.env.bound_refs.insert(value));
},
} }
}
const table_info = ObjectInfo{ fn fetch_object(self: *const RuntimeRef, env: *RuntimeEnv) RuntimeError!*State.Object {
.clean = table_clean, return switch (try self.fetch(env)) {
.get = table_get, .nil => env.raise(error.BadOperation, "cannot convert nil to object"),
.set = table_set, .true => env.raise(error.BadOperation, "cannot convert true to object"),
}; .false => env.raise(error.BadOperation, "cannot convert false to object"),
.number => env.raise(error.BadOperation, "cannot convert number to object"),
fn table_set(context: IndexContext, value: *const RuntimeRef) RuntimeError!void { .object => |object| object,
const table = @as(*Table, @ptrCast(@alignCast(context.userdata.ptr))); };
switch (try context.index.fetch(context.env)) {
.nil => return context.env.raise(error.BadOperation, "cannot index a table with nil"),
.true => return context.env.raise(error.BadOperation, "cannot index a table with true"),
.false => return context.env.raise(error.BadOperation, "cannot index a table with false"),
.object => |index_object| {
const fetched_value = try value.fetch(context.env);
if (fetched_value == .object) {
try table.set_field(index_object, .{
.object = context.env.state.acquire_instance(fetched_value.object),
});
} else {
try table.set_field(index_object, fetched_value);
}
},
.number => |index_number| {
const fetched_value = try value.fetch(context.env);
if (fetched_value == .object) {
try table.set_index(@intFromFloat(index_number), .{
.object = context.env.state.acquire_instance(fetched_value.object),
});
} else {
try table.set_index(@intFromFloat(index_number), fetched_value);
}
},
} }
} };
fn to_number(env: *RuntimeEnv, variant: State.Variant) RuntimeError!State.Float {
return switch (variant) {
.nil => env.raise(error.BadOperation, "cannot convert nil to number"),
.true => env.raise(error.BadOperation, "cannot convert true to number"),
.false => env.raise(error.BadOperation, "cannot convert false to number"),
.number => |number| number,
.object => env.raise(error.BadOperation, "cannot convert object to number"),
};
}
fn to_object(env: *RuntimeEnv, variant: State.Variant) RuntimeError!*State.Object {
return switch (variant) {
.nil => env.raise(error.BadOperation, "cannot convert nil to object"),
.true => env.raise(error.BadOperation, "cannot convert true to object"),
.false => env.raise(error.BadOperation, "cannot convert false to object"),
.number => env.raise(error.BadOperation, "cannot convert number to object"),
.object => |object| object,
};
}
const string_info = ObjectInfo{ const string_info = ObjectInfo{

18
source/ona/kym/State.zig
View File

@ -36,24 +36,6 @@ pub const Variant = union (enum) {
false, false,
number: Float, number: Float,
object: *Object, object: *Object,
pub fn equals(self: Variant, other: Variant) bool {
return switch (self) {
.nil => other == .nil,
.true => other == .true,
.false => other == .false,
.number => |number| switch (other) {
.number => |other_number| number == other_number,
else => false,
},
.object => |object| switch (other) {
.object => |other_object| object == other_object,
else => false,
},
};
}
}; };
pub fn acquire_instance(_: *Self, object: *Object) *Object { pub fn acquire_instance(_: *Self, object: *Object) *Object {

76
source/ona/kym/Table.zig
View File

@ -1,76 +0,0 @@
const State = @import("./State.zig");
const coral = @import("coral");
state: *State,
fields: FieldTable,
array: ArrayList,
const ArrayList = coral.list.Stack(State.Variant);
const Field = struct {
field: *State.Object,
value: State.Variant,
fn release_objects(self: Field, state: *State) void {
state.release(self.field);
if (self.value == .object) {
state.release(self.value.object);
}
}
};
const FieldTable = coral.map.Table([]const coral.io.Byte, Field, coral.map.string_table_traits);
const Self = @This();
pub fn free(self: *Self) void {
{
var field_iterator = FieldTable.Iterable{.table = &self.fields};
while (field_iterator.next()) |entry| {
entry.value.release_objects(self.state);
}
}
self.fields.free();
self.array.free();
}
pub fn get_field(self: *Self, field_name: *State.Object) State.Variant {
const field = self.fields.lookup(field_name.userdata) orelse return .nil;
if (field.value == .object) {
return .{.object = self.state.acquire_instance(field.value.object)};
}
return field.value;
}
pub fn get_index(self: *Self, index: usize) State.Variant {
return self.array.values[index];
}
pub fn make(allocator: coral.io.Allocator, state: *State) Self {
return .{
.state = state,
.fields = FieldTable.make(allocator),
.array = ArrayList.make(allocator),
};
}
pub fn set_field(self: *Self, field_name: *State.Object, value: State.Variant) coral.io.AllocationError!void {
const previous_entry = try self.fields.replace(field_name.userdata, .{
.field = field_name,
.value = value,
});
if (previous_entry) |entry| {
entry.value.release_objects(self.state);
}
}
pub fn set_index(self: *Self, index: usize, value: State.Variant) coral.io.AllocationError!void {
self.array.values[index] = value;
}

3
source/test.zig
View File

@ -1,3 +0,0 @@
const coral = @import("coral");
const ona = @import("ona");