mirror of
https://github.com/zoriya/zig-wayland.git
synced 2026-06-09 13:01:17 +00:00
Emit request functions
This commit is contained in:
Isaac Freund
+109
-27
@@ -47,20 +47,21 @@ const Interface = struct {
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fn emit(interface: Interface, writer: anytype) !void {
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var buf: [1024]u8 = undefined;
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var title_case = titleCase(trimPrefix(interface.name));
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mem.copy(u8, &buf, title_case);
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title_case = buf[0..title_case.len];
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var fbs = std.io.fixedBufferStream(&buf);
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try printIdentifier(fbs.writer(), titleCase(trimPrefix(interface.name)));
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const title_case = fbs.getWritten();
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try printIdentifier(fbs.writer(), trimPrefix(interface.name));
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const snake_case = fbs.getWritten()[title_case.len..];
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try writer.writeAll("pub const ");
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try printIdentifier(writer, title_case);
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try writer.print(
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\\= opaque {{
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\\pub const {} = opaque {{
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\\ pub const interface = common.Interface{{
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\\ .name = {},
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\\ .name = "{}",
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\\ .version = {},
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\\ .method_count = {},
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\\ .methods = &[_]common.Message{{
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, .{
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title_case,
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interface.name,
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interface.version,
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interface.requests.items.len,
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@@ -88,7 +89,6 @@ const Interface = struct {
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\\
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);
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const trimmed = trimPrefix(interface.name);
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try writer.print(
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\\ pub fn setListener(
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\\ {}: *{},
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@@ -100,7 +100,10 @@ const Interface = struct {
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\\ try proxy.addDispatcher(common.Dispatcher({}, T).dispatcher, listener, data);
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\\ }}
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\\
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, .{ trimmed, title_case, trimmed, title_case, trimmed, title_case });
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, .{ snake_case, title_case, snake_case, title_case, snake_case, title_case });
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for (interface.requests.items) |request, opcode|
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try request.emitRequestFn(writer, interface, opcode);
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try writer.writeAll("};\n");
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}
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@@ -110,25 +113,15 @@ const Message = struct {
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name: []const u8,
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since: u32,
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args: std.ArrayList(Arg) = std.ArrayList(Arg).init(gpa),
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destructor: bool,
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kind: union(enum) {
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normal: void,
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constructor: ?[]const u8,
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destructor: void,
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},
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fn emitMessage(message: Message, writer: anytype) !void {
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try writer.writeAll(".{ .name = {}, .signature = \"");
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for (message.args.items) |arg| {
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switch (arg.kind) {
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.int => try writer.writeByte('i'),
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.uint => try writer.writeByte('u'),
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.fixed => try writer.writeByte('f'),
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.string => try writer.writeByte('s'),
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.new_id => |interface| if (interface == null)
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try writer.writeAll("sun")
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else
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try writer.writeByte('n'),
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.object => try writer.writeByte('o'),
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.array => try writer.writeByte('a'),
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.fd => try writer.writeByte('h'),
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}
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}
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try writer.print(".{{ .name = \"{}\", .signature = \"", .{message.name});
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for (message.args.items) |arg| try arg.emitSignature(writer);
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try writer.writeAll("\", .types = &[_]?*common.Interface{");
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for (message.args.items) |arg| {
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switch (arg.kind) {
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@@ -159,6 +152,78 @@ const Message = struct {
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}
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try writer.writeAll("},\n");
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}
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fn emitRequestFn(message: Message, writer: anytype, interface: Interface, opcode: usize) !void {
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try writer.writeAll("pub fn ");
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try printIdentifier(writer, message.name);
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try writer.writeByte('(');
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try printIdentifier(writer, trimPrefix(interface.name));
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try writer.writeAll(": *");
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try printIdentifier(writer, titleCase(trimPrefix(interface.name)));
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for (message.args.items) |arg| {
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if (arg.kind == .new_id and arg.kind.new_id == null) {
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try writer.writeAll(", comptime T: type, version: u32");
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} else {
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try writer.writeByte(',');
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try printIdentifier(writer, arg.name);
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try writer.writeByte(':');
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try arg.emitType(writer);
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}
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}
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switch (message.kind) {
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.normal, .destructor => try writer.writeAll(") void {"),
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.constructor => |new_iface| if (new_iface) |i| {
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try writer.writeAll(") !*");
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try printIdentifier(writer, titleCase(trimPrefix(i)));
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try writer.writeAll("{");
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} else {
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try writer.writeAll(") !*T {");
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},
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}
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try writer.writeAll("const proxy = @ptrCast(*client.Proxy,");
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try printIdentifier(writer, trimPrefix(interface.name));
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try writer.writeAll(");");
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if (message.kind != .destructor) {
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try writer.writeAll("var args = [_]common.Argument{");
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for (message.args.items) |arg| {
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switch (arg.kind) {
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.int, .uint, .fixed, .string, .object, .array, .fd => {
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try writer.writeAll(".{ .");
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try arg.emitSignature(writer);
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try writer.writeAll(" = ");
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try printIdentifier(writer, arg.name);
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try writer.writeAll("},");
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},
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.new_id => |new_iface| {
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if (new_iface == null) {
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try writer.writeAll(
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\\.{ . s = T.interface.name },
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\\.{ . u = version },
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);
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}
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try writer.writeAll(".{ . o = null },");
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},
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}
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}
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try writer.writeAll("};\n");
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}
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switch (message.kind) {
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.normal => try writer.print("proxy.marshal({}, &args);", .{opcode}),
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.constructor => |new_iface| {
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if (new_iface) |i| {
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try writer.writeAll("return @ptrCast(*");
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try printIdentifier(writer, titleCase(trimPrefix(i)));
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try writer.print(", try proxy.marshalConstructor({}, &args, &", .{opcode});
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try printIdentifier(writer, titleCase(trimPrefix(i)));
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try writer.writeAll(".interface));");
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} else {
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try writer.print("return @ptrCast(*T, proxy.marshalConstructorVersioned({}, &args, T.interface, version));", .{opcode});
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}
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},
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.destructor => try writer.writeAll("proxy.destroy();"),
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}
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try writer.writeAll("}\n");
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}
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};
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const Arg = struct {
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@@ -177,6 +242,22 @@ const Arg = struct {
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allow_null: bool,
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enum_name: ?[]const u8,
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fn emitSignature(arg: Arg, writer: anytype) !void {
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switch (arg.kind) {
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.int => try writer.writeByte('i'),
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.uint => try writer.writeByte('u'),
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.fixed => try writer.writeByte('f'),
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.string => try writer.writeByte('s'),
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.new_id => |interface| if (interface == null)
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try writer.writeAll("sun")
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else
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try writer.writeByte('n'),
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.object => try writer.writeByte('o'),
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.array => try writer.writeByte('a'),
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.fd => try writer.writeByte('h'),
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}
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}
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/// if of type new_id, must have non-null interface
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fn emitType(arg: Arg, writer: anytype) !void {
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switch (arg.kind) {
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@@ -316,12 +397,13 @@ fn handleStart(ctx: *Context, name: []const u8, raw_atts: [*:null]?[*:0]const u8
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ctx.message = try list.addOne();
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ctx.message.* = .{
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.name = try mem.dupe(gpa, u8, atts.name.?),
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.destructor = if (atts.@"type") |t| mem.eql(u8, t, "destructor") else false,
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.kind = if (atts.@"type" != null and mem.eql(u8, atts.@"type".?, "destructor")) .destructor else .normal,
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.since = atts.since orelse 1,
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};
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} else if (mem.eql(u8, name, "arg")) {
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const kind = std.meta.stringToEnum(@TagType(Arg.Type), mem.span(atts.@"type".?)) orelse
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return error.InvalidType;
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if (kind == .new_id) ctx.message.kind = .{ .constructor = if (atts.interface) |f| try mem.dupe(gpa, u8, f) else null };
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try ctx.message.args.append(.{
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.name = try mem.dupe(gpa, u8, atts.name.?),
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.kind = switch (kind) {
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