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remove allocator for message diagnostics
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This commit is contained in:
Emil Lerch 2026-04-14 11:30:37 -07:00
parent 1a42735f11
commit 4a5d512128
Signed by: lobo
GPG key ID: A7B62D657EF764F8
1 changed files with 47 additions and 44 deletions
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91
src/srf.zig
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@ -26,24 +26,25 @@ pub const ParseLineError = struct {
level: std.log.Level,
line: usize,
column: usize,
pub fn deinit(self: ParseLineError, allocator: std.mem.Allocator) void {
allocator.free(self.message);
}
};
pub const Diagnostics = struct {
ptr: *anyopaque,
addErrorFn: *const fn (*anyopaque, std.mem.Allocator, ParseLineError) ParseError!void,
addErrorFn: *const fn (*anyopaque, ParseLineError) ParseError!void,
has_errors: bool = false,
pub fn addError(self: *Diagnostics, allocator: std.mem.Allocator, err: ParseLineError) ParseError!void {
try self.addErrorFn(self.ptr, allocator, err);
pub fn addError(self: *Diagnostics, err: ParseLineError) ParseError!void {
try self.addErrorFn(self.ptr, err);
self.has_errors = true;
}
};
pub fn BoundedDiagnostics(comptime max_errors: usize) type {
return struct {
buffer: [max_errors]ParseLineError,
/// backing buffer for message data. We provide 256 bytes for each message,
/// which should be fine, and if it's not, we need to fix the code
msg_buffer: [max_errors * 256]u8,
fba: std.heap.FixedBufferAllocator,
allocator: std.mem.Allocator,
capacity: usize = max_errors,
error_count: usize = 0,
@ -52,6 +53,12 @@ pub fn BoundedDiagnostics(comptime max_errors: usize) type {
pub const empty: Self = .{
// SAFETY: buffer is managed through addError below
.buffer = undefined,
// SAFETY: msg_buffer is managed through the FixedBufferAllocator
.msg_buffer = undefined,
// SAFETY: fba is established on first use of addError
.fba = undefined,
// SAFETY: allocator is established on first use of addError
.allocator = undefined,
};
pub fn diagnostics(self: *Self) Diagnostics {
@ -60,27 +67,26 @@ pub fn BoundedDiagnostics(comptime max_errors: usize) type {
.addErrorFn = addDiagnosticsError,
};
}
fn addDiagnosticsError(ptr: *anyopaque, allocator: std.mem.Allocator, err: ParseLineError) ParseError!void {
fn addDiagnosticsError(ptr: *anyopaque, err: ParseLineError) ParseError!void {
const self: *Self = @ptrCast(@alignCast(ptr));
try self.addError(allocator, err);
try self.addError(err);
}
pub fn addError(self: *Self, allocator: std.mem.Allocator, err: ParseLineError) ParseError!void {
pub fn addError(self: *Self, err: ParseLineError) ParseError!void {
if (self.error_count == 0) {
self.fba = std.heap.FixedBufferAllocator.init(&self.msg_buffer);
self.allocator = self.fba.allocator();
}
if (self.error_count >= self.capacity) {
err.deinit(allocator);
return ParseError.ParseFailed;
}
self.buffer[self.error_count] = err;
self.buffer[self.error_count].message = try self.allocator.dupe(u8, err.message);
self.error_count += 1;
}
pub fn errors(self: Self) []const ParseLineError {
return self.buffer[0..self.error_count];
}
/// Must be called to deallocate the diagnostic messages
pub fn deinit(self: *Self, allocator: std.mem.Allocator) void {
for (self.errors()) |e| e.deinit(allocator);
self.error_count = 0;
}
};
}
@ -134,10 +140,10 @@ pub const Value = union(enum) {
/// as well as multi-line strings. Metadata is returned to assist in tracking
///
/// This function is intended to be used by the SRF parser
pub fn parse(allocator: std.mem.Allocator, err_allocator: std.mem.Allocator, str: []const u8, state: *RecordIterator.State, delimiter: u8) ParseError!ValueWithMetaData {
pub fn parse(allocator: std.mem.Allocator, str: []const u8, state: *RecordIterator.State, delimiter: u8) ParseError!ValueWithMetaData {
const type_val_sep_raw = std.mem.indexOfScalar(u8, str, ':');
if (type_val_sep_raw == null) {
try parseError(err_allocator, "no type data or value after key", state);
try parseError("no type data or value after key", state);
return ParseError.ParseFailed;
}
@ -167,7 +173,7 @@ pub const Value = union(enum) {
state.partial_line_column += total_chars;
const Decoder = std.base64.standard.Decoder;
const size = Decoder.calcSizeForSlice(val) catch {
try parseError(err_allocator, "error parsing base64 value", state);
try parseError("error parsing base64 value", state);
return .{
.item_value = null,
.error_parsing = true,
@ -176,7 +182,7 @@ pub const Value = union(enum) {
const data = try allocator.alloc(u8, size);
errdefer allocator.free(data);
Decoder.decode(data, val) catch {
try parseError(err_allocator, "error parsing base64 value", state);
try parseError("error parsing base64 value", state);
allocator.free(data);
return .{
.item_value = null,
@ -197,7 +203,7 @@ pub const Value = union(enum) {
state.partial_line_column += total_chars;
const val_trimmed = std.mem.trim(u8, val, &std.ascii.whitespace);
const number = std.fmt.parseFloat(@FieldType(Value, "number"), val_trimmed) catch {
try parseError(err_allocator, "error parsing numeric value", state);
try parseError("error parsing numeric value", state);
return .{
.item_value = null,
.error_parsing = true,
@ -219,7 +225,7 @@ pub const Value = union(enum) {
if (std.mem.eql(u8, "false", val_trimmed)) break :blk false;
if (std.mem.eql(u8, "true", val_trimmed)) break :blk true;
try parseError(err_allocator, "error parsing boolean value", state);
try parseError("error parsing boolean value", state);
return .{
.item_value = null,
.error_parsing = true,
@ -246,7 +252,7 @@ pub const Value = union(enum) {
state.partial_line_column += total_metadata_chars;
const size = std.fmt.parseInt(usize, trimmed_meta, 0) catch {
log.debug("parseInt fail, trimmed_data: '{s}'", .{trimmed_meta});
try parseError(err_allocator, "unrecognized metadata for key", state);
try parseError("unrecognized metadata for key", state);
return .{
.item_value = null,
.error_parsing = true,
@ -740,12 +746,12 @@ pub const RecordIterator = struct {
if (state.current_line == null) return self.next();
}
// non-blank line, but we could have an eof marker
if (try Directive.parse(self.arena.child_allocator, state.current_line.?, state)) |d| {
if (try Directive.parse(state.current_line.?, state)) |d| {
switch (d) {
.eof => {
// there needs to be an eof then
if (state.nextLine()) |_| {
try parseError(self.arena.child_allocator, "Data found after #!eof", state);
try parseError("Data found after #!eof", state);
return ParseError.ParseFailed; // this is terminal
} else {
state.eof_found = true;
@ -754,7 +760,7 @@ pub const RecordIterator = struct {
}
},
else => {
try parseError(self.arena.child_allocator, "Directive found after data started", state);
try parseError("Directive found after data started", state);
state.current_line = state.nextLine();
// TODO: This runs the risk of a malicious file creating
// a stackoverflow by using many non-eof directives
@ -792,12 +798,12 @@ pub const RecordIterator = struct {
if (state.end_of_record_reached) return null;
// non-blank line, but we could have an eof marker
// TODO: deduplicate this code
if (try Directive.parse(self.arena.child_allocator, state.current_line.?, state)) |d| {
if (try Directive.parse(state.current_line.?, state)) |d| {
switch (d) {
.eof => {
// there needs to be an eof then
if (state.nextLine()) |_| {
try parseError(self.arena.child_allocator, "Data found after #!eof", state);
try parseError("Data found after #!eof", state);
return ParseError.ParseFailed; // this is terminal
} else {
state.eof_found = true;
@ -806,7 +812,7 @@ pub const RecordIterator = struct {
}
},
else => {
try parseError(self.arena.child_allocator, "Directive found after data started", state);
try parseError("Directive found after data started", state);
state.current_line = state.nextLine();
// TODO: This runs the risk of a malicious file creating
// a stackoverflow by using many non-eof directives
@ -824,7 +830,6 @@ pub const RecordIterator = struct {
state.partial_line_column += key.len + 1;
const value = try Value.parse(
aa,
self.arena.child_allocator,
it.rest(),
state,
state.field_delimiter,
@ -1063,7 +1068,7 @@ const Directive = union(enum) {
/// Parses a Directive. The only reason the allocator is used here is because
/// a parse error may be logged, so this function should *NOT* be called
/// with an arena allocator
pub fn parse(allocator: std.mem.Allocator, str: []const u8, state: *RecordIterator.State) ParseError!?Directive {
pub fn parse(str: []const u8, state: *RecordIterator.State) ParseError!?Directive {
if (!std.mem.startsWith(u8, str, "#!")) return null;
// strip any comments off
var it = std.mem.splitScalar(u8, str[2..], '#');
@ -1071,7 +1076,7 @@ const Directive = union(enum) {
if (std.mem.eql(u8, "srfv1", line)) return .magic;
if (std.mem.eql(u8, "requireeof", line)) return .require_eof;
if (std.mem.eql(u8, "requireof", line)) {
try parseError(allocator, "#!requireof found. Did you mean #!requireeof?", state);
try parseError("#!requireof found. Did you mean #!requireeof?", state);
return null;
}
if (std.mem.eql(u8, "eof", line)) return .eof;
@ -1355,16 +1360,16 @@ pub fn iterator(reader: *std.Io.Reader, allocator: std.mem.Allocator, options: P
};
const first_line = it.state.nextLine() orelse return ParseError.ParseFailed;
if (try Directive.parse(allocator, first_line, it.state)) |d| {
if (d != .magic) try parseError(allocator, "Magic header not found on first line", it.state);
} else try parseError(allocator, "Magic header not found on first line", it.state);
if (try Directive.parse(first_line, it.state)) |d| {
if (d != .magic) try parseError("Magic header not found on first line", it.state);
} else try parseError("Magic header not found on first line", it.state);
// Loop through the header material and configure our main parsing
it.state.current_line = blk: {
while (it.state.nextLine()) |line| {
if (try Directive.parse(allocator, line, it.state)) |d| {
if (try Directive.parse(line, it.state)) |d| {
switch (d) {
.magic => try parseError(allocator, "Found a duplicate magic header", it.state),
.magic => try parseError("Found a duplicate magic header", it.state),
.long_format => it.state.field_delimiter = '\n',
.compact_format => it.state.field_delimiter = ',', // what if we have both?
.require_eof => it.state.require_eof = true,
@ -1374,7 +1379,7 @@ pub fn iterator(reader: *std.Io.Reader, allocator: std.mem.Allocator, options: P
.eof => {
// there needs to be an eof then
if (it.state.nextLine()) |_| {
try parseError(allocator, "Data found after #!eof", it.state);
try parseError("Data found after #!eof", it.state);
return ParseError.ParseFailed; // this is terminal
} else return it;
},
@ -1394,11 +1399,11 @@ inline fn dupe(allocator: std.mem.Allocator, options: ParseOptions, data: []cons
/// Logs a parse error to diagnostics. Note that the allocator provided should
/// *NOT* be an arena, as the message must outlive the parse results, which will
/// be otherwise cleaned up in the arena deinit
inline fn parseError(allocator: std.mem.Allocator, message: []const u8, state: *RecordIterator.State) ParseError!void {
inline fn parseError(message: []const u8, state: *RecordIterator.State) ParseError!void {
log.debug("Parse error. Parse state {f}, message: {s}", .{ state, message });
if (state.options.diagnostics) |d| {
try d.addError(allocator, .{
.message = try allocator.dupe(u8, message),
try d.addError(.{
.message = message,
.level = .err,
.line = state.line,
.column = state.column,
@ -1980,7 +1985,6 @@ test parse {
// Diagnostics are optional, but if you would like them, include
// these three lines and set the options field:
var diags: BoundedDiagnostics(10) = .empty;
defer diags.deinit(allocator);
var diag: Diagnostics = diags.diagnostics();
const parsed = try parse(&reader, allocator, .{ .diagnostics = &diag });
defer parsed.deinit();
@ -2029,7 +2033,6 @@ test "parse with diagnostics" {
const allocator = std.testing.allocator;
var reader = std.Io.Reader.fixed(data);
var diags: BoundedDiagnostics(10) = .empty;
defer diags.deinit(allocator);
var diag: Diagnostics = diags.diagnostics();
try std.testing.expectError(
ParseError.ParseFailed,