build: remove `ZiglingStep.eval`
Remove the `ZiglingStep.eval` method and the src/ipc.zig source code. Use `Step.evalZigProcess`, instead. This greatly simplifies the code. Print the error messages and error bundle in `ZiglingStep.make`, both in case of error and success. Additionally, remove the `ZiglingStep.is_testing` field, since it is no longer necessary.pull/2/head
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/// Client side support for Zig IPC.
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const std = @import("std");
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const debug = std.debug;
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const fs = std.fs;
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const mem = std.mem;
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const Allocator = mem.Allocator;
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const Client = std.zig.Client;
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const ErrorBundle = std.zig.ErrorBundle;
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const Server = std.zig.Server;
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/// This data structure must be kept in sync with zig.Server.Message.EmitBinPath.
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const EmitBinPath = struct {
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flags: Flags,
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path: []const u8,
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pub const Flags = Server.Message.EmitBinPath.Flags;
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pub fn deinit(self: *EmitBinPath, allocator: Allocator) void {
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allocator.free(self.path);
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self.* = undefined;
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}
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};
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pub fn parseErrorBundle(allocator: Allocator, data: []const u8) !ErrorBundle {
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const EbHdr = Server.Message.ErrorBundle;
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const eb_hdr = @ptrCast(*align(1) const EbHdr, data);
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const extra_bytes =
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data[@sizeOf(EbHdr)..][0 .. @sizeOf(u32) * eb_hdr.extra_len];
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const string_bytes =
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data[@sizeOf(EbHdr) + extra_bytes.len ..][0..eb_hdr.string_bytes_len];
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// TODO: use @ptrCast when the compiler supports it
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const unaligned_extra = std.mem.bytesAsSlice(u32, extra_bytes);
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const extra_array = try allocator.alloc(u32, unaligned_extra.len);
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// TODO: use @memcpy when it supports slices
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//
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// Don't use the "multi-object for loop" syntax, in
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// order to avoid a syntax error with old Zig compilers.
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var i: usize = 0;
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while (i < extra_array.len) : (i += 1) {
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extra_array[i] = unaligned_extra[i];
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}
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return .{
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.string_bytes = try allocator.dupe(u8, string_bytes),
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.extra = extra_array,
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};
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}
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pub fn parseEmitBinPath(allocator: Allocator, data: []const u8) !EmitBinPath {
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const EbpHdr = Server.Message.EmitBinPath;
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const ebp_hdr = @ptrCast(*align(1) const EbpHdr, data);
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const path = try allocator.dupe(u8, data[@sizeOf(EbpHdr)..]);
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return .{
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.flags = ebp_hdr.flags,
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.path = path,
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};
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}
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pub fn sendMessage(file: fs.File, tag: Client.Message.Tag) !void {
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const header: Client.Message.Header = .{
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.tag = tag,
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.bytes_len = 0,
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};
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try file.writeAll(mem.asBytes(&header));
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}
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