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/// Client side support for Zig IPC.
const std = @import("std");
const debug = std.debug;
const fs = std.fs;
const mem = std.mem;
const Allocator = mem.Allocator;
const Client = std.zig.Client;
const ErrorBundle = std.zig.ErrorBundle;
const Server = std.zig.Server;
/// This data structure must be kept in sync with zig.Server.Message.EmitBinPath.
const EmitBinPath = struct {
flags: Flags,
path: []const u8,
pub const Flags = Server.Message.EmitBinPath.Flags;
pub fn deinit(self: *EmitBinPath, allocator: Allocator) void {
allocator.free(self.path);
self.* = undefined;
}
};
pub fn parseErrorBundle(allocator: Allocator, data: []const u8) !ErrorBundle {
const EbHdr = Server.Message.ErrorBundle;
const eb_hdr = @ptrCast(*align(1) const EbHdr, data);
const extra_bytes =
data[@sizeOf(EbHdr)..][0 .. @sizeOf(u32) * eb_hdr.extra_len];
const string_bytes =
data[@sizeOf(EbHdr) + extra_bytes.len ..][0..eb_hdr.string_bytes_len];
// TODO: use @ptrCast when the compiler supports it
const unaligned_extra = std.mem.bytesAsSlice(u32, extra_bytes);
const extra_array = try allocator.alloc(u32, unaligned_extra.len);
// TODO: use @memcpy when it supports slices
//
// Don't use the "multi-object for loop" syntax, in
// order to avoid a syntax error with old Zig compilers.
var i: usize = 0;
while (i < extra_array.len) : (i += 1) {
extra_array[i] = unaligned_extra[i];
}
return .{
.string_bytes = try allocator.dupe(u8, string_bytes),
.extra = extra_array,
};
}
pub fn parseEmitBinPath(allocator: Allocator, data: []const u8) !EmitBinPath {
const EbpHdr = Server.Message.EmitBinPath;
const ebp_hdr = @ptrCast(*align(1) const EbpHdr, data);
const path = try allocator.dupe(u8, data[@sizeOf(EbpHdr)..]);
return .{
.flags = ebp_hdr.flags,
.path = path,
};
}
pub fn sendMessage(file: fs.File, tag: Client.Message.Tag) !void {
const header: Client.Message.Header = .{
.tag = tag,
.bytes_len = 0,
};
try file.writeAll(mem.asBytes(&header));
}
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