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Reworked the build file searching method

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Instead of looking for any existing build file in the store that fits
  in the directory structure of a new document, we now always look
  for the closest build.zig file in the directory structure.
This commit is contained in:
Alexandros Naskos 2021-01-31 12:24:55 +02:00
parent 1408aa733b
commit ca6598572e
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GPG Key ID: 02BF2E72B0EA32D2
1 changed files with 34 additions and 21 deletions
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55
src/document_store.zig
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@ -191,55 +191,68 @@ fn newDocument(self: *DocumentStore, uri: []const u8, text: []u8) anyerror!*Hand
}) catch |err| {
log.debug("Failed to load packages of build file {s} (error: {})", .{ build_file.uri, err });
};
} else if (self.zig_exe_path != null and !in_std) associate_build_file: {
// Look into build files to see if we already have one that fits
for (self.build_files.items) |build_file| {
} else if (self.zig_exe_path != null and !in_std) {
// Look into build files to see if we already have one that lives in the directory structure
var candidate = for (self.build_files.items) |build_file| {
const build_file_base_uri = build_file.uri[0 .. std.mem.lastIndexOfScalar(u8, build_file.uri, '/').? + 1];
if (std.mem.startsWith(u8, uri, build_file_base_uri)) {
log.debug("Found an associated build file: {s}", .{build_file.uri});
build_file.refs += 1;
handle.associated_build_file = build_file;
break :associate_build_file;
log.debug("Found a candidate associated build file: {s}", .{build_file.uri});
break build_file;
}
}
// Otherwise, try to find a build file.
} else null;
// Then, try to find the closest build file.
var curr_path = try URI.parse(self.allocator, uri);
defer self.allocator.free(curr_path);
while (true) {
if (curr_path.len == 0) break :associate_build_file;
if (curr_path.len == 0) break;
if (std.mem.lastIndexOfScalar(u8, curr_path[0 .. curr_path.len - 1], std.fs.path.sep)) |idx| {
// This includes the last separator
curr_path = curr_path[0 .. idx + 1];
// Try to open the folder, then the file.
var folder = std.fs.cwd().openDir(curr_path, .{}) catch |err| switch (err) {
error.FileNotFound => continue,
else => return err,
};
defer folder.close();
// Try to open the file, read it and add the new document if we find it.
const build_file_text = folder.readFileAlloc(self.allocator, "build.zig", std.math.maxInt(usize)) catch |err| switch (err) {
var build_file = folder.openFile("build.zig", .{}) catch |err| switch (err) {
error.FileNotFound, error.AccessDenied => continue,
else => return err,
};
errdefer self.allocator.free(build_file_text);
defer build_file.close();
// Calculate build file's URI
var candidate_path = try std.mem.concat(self.allocator, u8, &[_][]const u8{ curr_path, "build.zig" });
defer self.allocator.free(candidate_path);
const build_file_uri = try URI.fromPath(self.allocator, candidate_path);
errdefer self.allocator.free(build_file_uri);
const build_file_handle = try self.newDocument(build_file_uri, build_file_text);
if (build_file_handle.is_build_file) |build_file| {
build_file.refs += 1;
}
handle.associated_build_file = build_file_handle.is_build_file;
if (candidate) |candidate_build_file| {
// Check if it is the same as the current candidate we got from the existing build files.
// If it isn't, we need to read the file and make a new build file.
if (std.mem.eql(u8, candidate_build_file.uri, build_file_uri)) {
self.allocator.free(build_file_uri);
break;
} else break :associate_build_file;
}
}
// Read the build file, create a new document, set the candidate to the new build file.
const build_file_text = try build_file.readToEndAlloc(self.allocator, std.math.maxInt(usize));
errdefer self.allocator.free(build_file_text);
const build_file_handle = try self.newDocument(build_file_uri, build_file_text);
candidate = build_file_handle.is_build_file.?;
break;
} else break;
}
// Finally, associate the candidate build file, if any, to the new document.
if (candidate) |build_file| {
build_file.refs += 1;
handle.associated_build_file = build_file;
log.debug("Associated build file `{s}` to document `{s}`", .{build_file.uri, handle.uri()});
}
}