Replace system objects with builtins and syscalls
This commit is contained in:
parent
cb961ea573
commit
429f7a52ad
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@ -14,8 +14,8 @@ options = {
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options["foo"] = "rab"
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options[42] = "24"
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@log_info(options.title)
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@log_info(options["foo"])
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@log_info(options[42])
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@print(options.title)
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@print(options["foo"])
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@print(options[42])
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return options
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@ -12,8 +12,8 @@ pub const Manifest = struct {
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height: u16 = 480,
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tick_rate: f32 = 60.0,
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pub fn load(self: *Manifest, env: *kym.RuntimeEnv, file_access: file.Access) kym.RuntimeError!void {
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const manifest = try env.expect(try env.execute_file(file_access, file.Path.from(&.{"app.ona"})));
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pub fn load(self: *Manifest, env: *kym.RuntimeEnv) kym.RuntimeError!void {
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const manifest = try env.expect(try env.import(file.Path.from(&.{"app.ona"})));
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defer env.discard(manifest);
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@ -4,30 +4,14 @@ const coral = @import("coral");
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const file = @import("./file.zig");
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pub const Caller = coral.io.Generator(RuntimeError!?*RuntimeRef, *RuntimeEnv);
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pub const ErrorHandler = coral.io.Generator(void, ErrorInfo);
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pub const ErrorInfo = struct {
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message: []const coral.io.Byte,
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frames: []const Frame,
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};
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pub const Fixed = i32;
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pub const Float = f64;
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pub const Frame = struct {
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name: []const coral.io.Byte,
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arg_count: u8,
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locals_top: usize,
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};
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pub const RuntimeEnv = struct {
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options: Options,
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interned_symbols: SymbolSet,
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allocator: coral.io.Allocator,
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error_handler: ErrorHandler,
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system_bindings: RefTable,
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locals: RefList,
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frames: FrameStack,
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@ -37,6 +21,11 @@ pub const RuntimeEnv = struct {
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opcodes: OpcodeList,
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constants: ConstList,
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const Builtin = enum {
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import,
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print,
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};
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const Constant = union (enum) {
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fixed: Fixed,
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float: Float,
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@ -51,7 +40,7 @@ pub const RuntimeEnv = struct {
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push_const: u16,
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push_local: u8,
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push_table: u32,
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push_system: u16,
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push_builtin: Builtin,
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local_set: u8,
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object_get,
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object_set,
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@ -175,10 +164,12 @@ pub const RuntimeEnv = struct {
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try self.compile_expression(chunk, grouped_expression.*);
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},
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.get_system => |get_system| {
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try chunk.opcodes.push_one(.{
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.push_system = try chunk.declare_constant(.{.symbol = get_system}),
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});
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.import => {
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try chunk.opcodes.push_one(.{.push_builtin = .import});
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},
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.print => {
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try chunk.opcodes.push_one(.{.push_builtin = .print});
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},
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.local_get => |local_get| {
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@ -360,12 +351,15 @@ pub const RuntimeEnv = struct {
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try self.env.locals.push_one(table);
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},
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.push_system => |push_system| {
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if (self.env.system_bindings.lookup(self.constants.values[push_system])) |syscallable| {
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try self.env.locals.push_one(try self.env.acquire(syscallable));
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} else {
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try self.env.locals.push_one(null);
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}
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.push_builtin => |push_builtin| {
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const builtin_syscall = try self.env.new_syscall(switch (push_builtin) {
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.import => syscall_import,
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.print => syscall_print,
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});
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errdefer self.env.discard(builtin_syscall);
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try self.env.locals.push_one(builtin_syscall);
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},
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.local_set => |local_set| {
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@ -441,6 +435,8 @@ pub const RuntimeEnv = struct {
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defer coral.debug.assert(self.env.frames.pop() != null);
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break: call try switch (callable.object().payload) {
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.syscall => |syscall| syscall(self.env),
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.dynamic => |dynamic| dynamic.typeinfo().call(.{
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.userdata = dynamic.userdata(),
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.env = self.env,
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@ -799,7 +795,19 @@ pub const RuntimeEnv = struct {
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const ConstList = coral.list.Stack(*RuntimeRef);
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const FrameStack = coral.list.Stack(Frame);
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const FrameStack = coral.list.Stack(struct {
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name: []const coral.io.Byte,
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arg_count: u8,
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locals_top: usize,
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});
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pub const Options = struct {
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import_access: file.Access,
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print: *const Printer,
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print_error: *const Printer,
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};
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pub const Printer = fn (buffer: []const coral.io.Byte) void;
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const RefList = coral.list.Stack(?*RuntimeRef);
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@ -916,7 +924,7 @@ pub const RuntimeEnv = struct {
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return @ptrCast(object);
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}
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pub fn arg(self: *RuntimeEnv, index: usize) RuntimeError!?*RuntimeRef {
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pub fn acquire_arg(self: *RuntimeEnv, index: usize) RuntimeError!?*RuntimeRef {
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const frame = self.frames.peek() orelse return self.raise(error.IllegalState, "stack underflow");
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if (index < frame.arg_count) {
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@ -957,6 +965,8 @@ pub const RuntimeEnv = struct {
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defer coral.io.assert(self.frames.pop() != null);
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return switch (callable.object().payload) {
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.syscall => |syscall| syscall(self.env),
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.dynamic => |dynamic| dynamic.typeinfo.call(.{
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.userdata = dynamic.userdata(),
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.env = self,
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@ -975,7 +985,7 @@ pub const RuntimeEnv = struct {
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if (object.ref_count == 0) {
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switch (object.payload) {
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.false, .true, .float, .fixed, .symbol => {},
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.false, .true, .float, .fixed, .symbol, .syscall => {},
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.string => |string| {
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coral.debug.assert(string.len >= 0);
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@ -998,8 +1008,8 @@ pub const RuntimeEnv = struct {
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}
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}
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pub fn execute_file(self: *RuntimeEnv, file_access: file.Access, file_path: file.Path) RuntimeError!?*RuntimeRef {
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const file_data = (try file.allocate_and_load(self.allocator, file_access, file_path)) orelse {
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pub fn import(self: *RuntimeEnv, file_path: file.Path) RuntimeError!?*RuntimeRef {
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const file_data = (try file.allocate_and_load(self.allocator, self.options.import_access, file_path)) orelse {
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return self.raise(error.BadOperation, "failed to open or read file specified");
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};
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@ -1043,18 +1053,8 @@ pub const RuntimeEnv = struct {
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}
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}
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{
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var iterable = self.system_bindings.as_iterable();
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while (iterable.next()) |entry| {
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self.discard(entry.key);
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self.discard(entry.value);
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}
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}
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self.frames.free();
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self.locals.free();
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self.system_bindings.free();
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self.interned_symbols.free();
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}
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@ -1069,13 +1069,12 @@ pub const RuntimeEnv = struct {
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};
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}
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pub fn make(allocator: coral.io.Allocator, error_handler: ErrorHandler) coral.io.AllocationError!RuntimeEnv {
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pub fn make(allocator: coral.io.Allocator, options: Options) coral.io.AllocationError!RuntimeEnv {
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return RuntimeEnv{
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.locals = RefList.make(allocator),
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.frames = FrameStack.make(allocator),
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.system_bindings = RefTable.make(allocator, .{}),
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.interned_symbols = SymbolSet.make(allocator, .{}),
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.error_handler = error_handler,
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.options = options,
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.allocator = allocator,
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};
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}
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@ -1158,6 +1157,13 @@ pub const RuntimeEnv = struct {
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});
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}
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pub fn new_syscall(self: *RuntimeEnv, value: *const Syscall) RuntimeError!*RuntimeRef {
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return RuntimeRef.allocate(self.allocator, .{
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.ref_count = 1,
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.payload = .{.syscall = value},
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});
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}
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pub fn new_table(self: *RuntimeEnv) RuntimeError!*RuntimeRef {
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var table = Table{
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.associative = RefTable.make(self.allocator, .{}),
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@ -1178,11 +1184,24 @@ pub const RuntimeEnv = struct {
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});
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}
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pub fn print(self: *RuntimeEnv, buffer: []const coral.io.Byte) void {
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self.options.print(buffer);
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}
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pub fn raise(self: *RuntimeEnv, error_value: RuntimeError, message: []const coral.io.Byte) RuntimeError {
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self.error_handler.invoke(.{
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.message = message,
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.frames = self.frames.values,
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});
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self.options.print_error(message);
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if (!self.frames.is_empty()) {
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self.options.print_error("stack trace:");
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var remaining_frames = self.frames.values.len;
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while (remaining_frames != 0) {
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remaining_frames -= 1;
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self.options.print_error(self.frames.values[remaining_frames].name);
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}
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}
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return error_value;
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}
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@ -1254,6 +1273,7 @@ pub const RuntimeRef = opaque {
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float: Float,
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fixed: Fixed,
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symbol: [*:0]const coral.io.Byte,
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syscall: *const Syscall,
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string: struct {
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ptr: [*]coral.io.Byte,
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@ -1323,6 +1343,11 @@ pub const RuntimeRef = opaque {
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else => false,
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},
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.syscall => |self_syscall| switch (other.object().payload) {
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.syscall => |other_syscall| self_syscall == other_syscall,
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else => false,
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},
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.string => |self_string| switch (other.object().payload) {
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.string => |other_string| coral.io.equals(self_string.unpack(), other_string.unpack()),
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else => false,
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@ -1344,7 +1369,8 @@ pub const RuntimeRef = opaque {
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.true => 1231,
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.float => |float| @bitCast(float),
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.fixed => |fixed| @intCast(@as(u32, @bitCast(fixed))),
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.symbol => |symbol| @bitCast(@intFromPtr(symbol)),
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.symbol => |symbol| @intFromPtr(symbol),
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.syscall => |syscall| @intFromPtr(syscall),
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.string => |string| coral.io.djb2_hash(@typeInfo(usize).Int, string.unpack()),
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.dynamic => |dynamic| @intFromPtr(dynamic.typeinfo()) ^ @intFromPtr(dynamic.userdata().ptr),
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};
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@ -1364,12 +1390,15 @@ pub const RuntimeRef = opaque {
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.float => |float| float != 0,
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.fixed => |fixed| fixed != 0,
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.symbol => true,
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.syscall => true,
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.string => |string| string.len != 0,
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.dynamic => true,
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};
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}
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};
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pub const Syscall = fn (env: *RuntimeEnv) RuntimeError!?*RuntimeRef;
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pub const Typeinfo = struct {
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name: []const coral.io.Byte,
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size: usize,
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@ -1396,14 +1425,6 @@ pub const Typeinfo = struct {
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}
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};
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pub fn bind_syscaller(env: *RuntimeEnv, name: []const coral.io.Byte, caller: Caller) RuntimeError!void {
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const callable = try new_caller(env, caller);
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defer env.discard(callable);
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try env.bind_system(name, callable);
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}
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pub fn get_field(env: *RuntimeEnv, indexable: *RuntimeRef, field: []const coral.io.Byte) RuntimeError!?*RuntimeRef {
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const field_symbol = try env.new_symbol(field);
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@ -1428,18 +1449,20 @@ pub fn get_key(env: *RuntimeEnv, indexable: *RuntimeRef, key: []const coral.io.B
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return env.get(indexable, key_string);
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}
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pub fn new_caller(env: *RuntimeEnv, value: Caller) RuntimeError!*RuntimeRef {
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const Callable = struct {
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fn call(method: Typeinfo.Method) RuntimeError!?*RuntimeRef {
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coral.debug.assert(method.userdata.len == @sizeOf(Caller));
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fn syscall_import(env: *RuntimeEnv) RuntimeError!?*RuntimeRef {
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const arg = try env.expect(try env.acquire_arg(0));
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return @as(*Caller, @ptrCast(@alignCast(method.userdata))).invoke(method.env);
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}
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};
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defer env.discard(arg);
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return env.new_dynamic(coral.io.bytes_of(&value).ptr, &.{
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.name = "<native>",
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.size = @sizeOf(Caller),
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.call = Callable.call,
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});
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return env.import(file.Path.from(&.{try env.unbox_string(arg)}));
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}
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fn syscall_print(env: *RuntimeEnv) RuntimeError!?*RuntimeRef {
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const arg = try env.expect(try env.acquire_arg(0));
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defer env.discard(arg);
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env.print(try env.unbox_string(arg));
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return null;
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}
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@ -13,12 +13,13 @@ pub const Expression = union (enum) {
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nil_literal,
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true_literal,
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false_literal,
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import,
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print,
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number_literal: []const coral.io.Byte,
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string_literal: []const coral.io.Byte,
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symbol_literal: []const coral.io.Byte,
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table_literal: TableLiteral,
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grouped_expression: *Expression,
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get_system: []const coral.io.Byte,
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local_get: []const coral.io.Byte,
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local_set: []const coral.io.Byte,
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@ -351,10 +352,27 @@ fn parse_factor(self: *Self) ParseError!Expression {
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break: parse .{.local_get = identifier};
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},
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.system_identifier => |system_identifier| {
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.builtin => |builtin| {
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self.tokenizer.skip_newlines();
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coral.debug.assert(builtin.len != 0);
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break: parse .{.get_system = system_identifier};
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switch (builtin[0]) {
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'i' => {
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if (coral.io.ends_with(builtin, "mport")) {
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break: parse .import;
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}
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},
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'p' => {
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if (coral.io.ends_with(builtin, "rint")) {
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break: parse .print;
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}
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},
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else => {},
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}
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return self.report("unknown builtin");
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},
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.symbol_brace_left => {
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@ -4,9 +4,8 @@ pub const Token = union(enum) {
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end,
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unknown: coral.io.Byte,
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newline,
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system_identifier: []const coral.io.Byte,
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identifier: []const coral.io.Byte,
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builtin: []const coral.io.Byte,
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symbol_plus,
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symbol_minus,
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@ -46,8 +45,8 @@ pub const Token = union(enum) {
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.unknown => |unknown| @as([*]const coral.io.Byte, @ptrCast(&unknown))[0 .. 1],
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.newline => "newline",
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.system_identifier => |identifier| identifier,
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.identifier => |identifier| identifier,
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.builtin => |identifier| identifier,
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.symbol_plus => "+",
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.symbol_minus => "-",
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@ -166,40 +165,52 @@ pub const Tokenizer = struct {
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coral.debug.assert(identifier.len != 0);
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switch (identifier[0]) {
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'c' => if (coral.io.ends_with(identifier, "onst")) {
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'c' => {
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if (coral.io.ends_with(identifier, "onst")) {
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self.token = .keyword_const;
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return;
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}
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},
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'n' => if (coral.io.ends_with(identifier, "il")) {
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'n' => {
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if (coral.io.ends_with(identifier, "il")) {
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self.token = .keyword_nil;
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return;
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}
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},
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'f' => if (coral.io.ends_with(identifier, "alse")) {
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'f' => {
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if (coral.io.ends_with(identifier, "alse")) {
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self.token = .keyword_false;
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return;
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}
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},
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't' => if (coral.io.ends_with(identifier, "rue")) {
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't' => {
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if (coral.io.ends_with(identifier, "rue")) {
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self.token = .keyword_true;
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return;
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}
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},
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'r' => if (coral.io.ends_with(identifier, "eturn")) {
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'r' => {
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if (coral.io.ends_with(identifier, "eturn")) {
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self.token = .keyword_return;
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return;
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}
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||||
},
|
||||
|
||||
's' => if (coral.io.ends_with(identifier, "elf")) {
|
||||
's' => {
|
||||
if (coral.io.ends_with(identifier, "elf")) {
|
||||
self.token = .keyword_self;
|
||||
|
||||
return;
|
||||
}
|
||||
},
|
||||
|
||||
else => {},
|
||||
|
|
@ -213,44 +224,14 @@ pub const Tokenizer = struct {
|
|||
'@' => {
|
||||
cursor += 1;
|
||||
|
||||
if (cursor < self.source.len) switch (self.source[cursor]) {
|
||||
'A'...'Z', 'a'...'z', '_' => {
|
||||
const begin = cursor;
|
||||
|
||||
cursor += 1;
|
||||
|
||||
while (cursor < self.source.len) switch (self.source[cursor]) {
|
||||
'0'...'9', 'A'...'Z', 'a'...'z', '_' => cursor += 1,
|
||||
else => break,
|
||||
};
|
||||
|
||||
self.token = .{.system_identifier = self.source[begin .. cursor]};
|
||||
|
||||
return;
|
||||
},
|
||||
|
||||
'"' => {
|
||||
cursor += 1;
|
||||
|
||||
const begin = cursor;
|
||||
|
||||
cursor += 1;
|
||||
|
||||
while (cursor < self.source.len) switch (self.source[cursor]) {
|
||||
'"' => break,
|
||||
else => cursor += 1,
|
||||
};
|
||||
|
||||
self.token = .{.system_identifier = self.source[begin .. cursor]};
|
||||
cursor += 1;
|
||||
|
||||
return;
|
||||
},
|
||||
|
||||
else => {},
|
||||
};
|
||||
|
||||
self.token = .symbol_at;
|
||||
self.token = if (begin == cursor) .{.unknown = '@'} else .{.builtin = self.source[begin .. cursor]};
|
||||
|
||||
return;
|
||||
},
|
||||
|
|
|
|||
|
|
@ -10,52 +10,6 @@ const heap = @import("./heap.zig");
|
|||
|
||||
const kym = @import("./kym.zig");
|
||||
|
||||
fn kym_handle_errors(info: kym.ErrorInfo) void {
|
||||
app.log_fail(info.message);
|
||||
|
||||
var remaining_frames = info.frames.len;
|
||||
|
||||
if (remaining_frames != 0) {
|
||||
app.log_fail("stack trace:");
|
||||
|
||||
while (remaining_frames != 0) {
|
||||
remaining_frames -= 1;
|
||||
|
||||
app.log_fail(info.frames[remaining_frames].name);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn kym_log_info(env: *kym.RuntimeEnv) kym.RuntimeError!?*kym.RuntimeRef {
|
||||
const argument = try env.expect(try env.arg(0));
|
||||
|
||||
defer env.discard(argument);
|
||||
|
||||
app.log_info(try env.unbox_string(argument));
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
fn kym_log_warn(env: *kym.RuntimeEnv) kym.RuntimeError!?*kym.RuntimeRef {
|
||||
const argument = try env.expect(try env.arg(0));
|
||||
|
||||
defer env.discard(argument);
|
||||
|
||||
app.log_warn(try env.unbox_string(argument));
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
fn kym_log_fail(env: *kym.RuntimeEnv) kym.RuntimeError!?*kym.RuntimeRef {
|
||||
const argument = try env.expect(try env.arg(0));
|
||||
|
||||
defer env.discard(argument);
|
||||
|
||||
app.log_fail(try env.unbox_string(argument));
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
fn last_sdl_error() [:0]const u8 {
|
||||
return coral.io.slice_sentineled(@as(u8, 0), @as([*:0]const u8, @ptrCast(ext.SDL_GetError())));
|
||||
}
|
||||
|
|
@ -69,27 +23,19 @@ pub fn run_app(file_access: file.Access) void {
|
|||
|
||||
defer ext.SDL_Quit();
|
||||
|
||||
var script_env = kym.RuntimeEnv.make(heap.allocator, kym.ErrorHandler.from(kym_handle_errors)) catch {
|
||||
var script_env = kym.RuntimeEnv.make(heap.allocator, .{
|
||||
.print = app.log_info,
|
||||
.print_error = app.log_fail,
|
||||
.import_access = file_access,
|
||||
}) catch {
|
||||
return app.log_fail("failed to initialize script runtime");
|
||||
};
|
||||
|
||||
defer script_env.free();
|
||||
|
||||
kym.bind_syscaller(&script_env, "log_info", kym.Caller.from(kym_log_info)) catch {
|
||||
return app.log_fail("failed to bind `log_info` syscall");
|
||||
};
|
||||
|
||||
kym.bind_syscaller(&script_env, "log_warn", kym.Caller.from(kym_log_warn)) catch {
|
||||
return app.log_fail("failed to bind `log_warn` syscall");
|
||||
};
|
||||
|
||||
kym.bind_syscaller(&script_env, "log_fail", kym.Caller.from(kym_log_fail)) catch {
|
||||
return app.log_fail("failed to bind `log_fail` syscall");
|
||||
};
|
||||
|
||||
var manifest = app.Manifest{};
|
||||
|
||||
manifest.load(&script_env, file_access) catch return;
|
||||
manifest.load(&script_env) catch return;
|
||||
|
||||
const window = create: {
|
||||
const pos = ext.SDL_WINDOWPOS_CENTERED;
|
||||
|
|
|
|||
Loading…
Reference in New Issue