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use fmt;
export type ctxtracer = struct {
tracer,
sink: *tracer,
fmt: str,
fields: []fmt::field,
};
export fn ctx(sink: *tracer, fmt: str, fields: fmt::field...) ctxtracer = {
return ctxtracer {
log = &ctx_log,
sink = sink,
fmt = fmt,
fields = fields,
};
};
fn ctx_log(
tr: *tracer,
ctx: nullable *context,
lvl: level,
fmt: str,
fields: fmt::field...
) void = {
const tr = tr: *ctxtracer;
const ctx_ = context {
fmt = tr.fmt,
fields = tr.fields,
next = ctx,
};
log(tr.sink, &ctx_, lvl, fmt, fields...);
};
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