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mach: check application signature

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This commit is contained in:
Ali Chraghi 2022-06-25 17:13:05 +04:30 • committed by Stephen Gutekanst
parent c831840094
commit ff69efea52
1 changed files with 25 additions and 4 deletions
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29
src/platform/common.zig
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@ -1,6 +1,27 @@
const Engine = @import("../Engine.zig");
pub fn checkApplication(comptime App: type) void {
// TODO: check signature
if (!@hasDecl(App, "init")) @compileError("App must export 'pub fn init(app: *App, engine: *mach.Engine) !void'");
if (!@hasDecl(App, "deinit")) @compileError("App must export 'pub fn deinit(app: *App, engine: *mach.Engine) void'");
if (!@hasDecl(App, "update")) @compileError("App must export 'pub fn update(app: *App, engine: *mach.Engine) !void'");
if (@hasDecl(App, "init")) {
const InitFn = @TypeOf(@field(App, "init"));
if (InitFn != fn (app: *App, engine: *Engine) @typeInfo(@typeInfo(InitFn).Fn.return_type.?).ErrorUnion.error_set!void)
@compileError("expected 'pub fn init(app: *App, engine: *mach.Engine) !void' found '" ++ @typeName(InitFn) ++ "'");
} else {
@compileError("App must export 'pub fn init(app: *App, engine: *mach.Engine) !void'");
}
if (@hasDecl(App, "update")) {
const UpdateFn = @TypeOf(@field(App, "update"));
if (UpdateFn != fn (app: *App, engine: *Engine) @typeInfo(@typeInfo(UpdateFn).Fn.return_type.?).ErrorUnion.error_set!void)
@compileError("expected 'pub fn update(app: *App, engine: *mach.Engine) !void' found '" ++ @typeName(UpdateFn) ++ "'");
} else {
@compileError("App must export 'pub fn update(app: *App, engine: *mach.Engine) !void'");
}
if (@hasDecl(App, "deinit")) {
const DeinitFn = @TypeOf(@field(App, "deinit"));
if (DeinitFn != fn (app: *App, engine: *Engine) void)
@compileError("expected 'pub fn deinit(app: *App, engine: *mach.Engine) void' found '" ++ @typeName(DeinitFn) ++ "'");
} else {
@compileError("App must export 'pub fn deinit(app: *App, engine: *mach.Engine) void'");
}
}