tiny.zen.DiagramDocumentPlan

1pub const Plan = struct {2    source_bytes: usize,3    source_hash: u64,4    line_scratch_bytes: usize,5    document_bytes: usize,6    surveyed: diagram_limits.Limits,78    pub fn inspect(line_scratch: []u8, jsonl: []const u8) model.Error!Plan {9        const line_scratch_bytes = try requiredLineScratchBytes(jsonl);10        if (line_scratch_bytes > line_scratch.len) {11            return error.DiagramLineScratchCapacityExceeded;12        }13        const surveyed = try diagram_limits.survey(14            line_scratch[0..line_scratch_bytes],15            jsonl,16        );17        const derived = try diagram_limits.Capacity.derive(surveyed);18        return .{19            .source_bytes = jsonl.len,20            .source_hash = std.hash.Wyhash.hash(0, jsonl),21            .line_scratch_bytes = line_scratch_bytes,22            .document_bytes = try regionLength(derived.document_bytes),23            .surveyed = surveyed,24        };25    }2627    pub fn requiredLineScratchBytes(jsonl: []const u8) error{DiagramTooLarge}!usize {28        const measured = diagram_limits.measure(jsonl);29        return regionLength(try diagram_limits.lineScratchBytes(measured.max_line_bytes));30    }3132    pub fn exactLimits(self: Plan) Limits {33        return .{34            .max_line_scratch_bytes = self.line_scratch_bytes,35            .max_document_bytes = self.document_bytes,36        };37    }3839    pub fn require(self: Plan, limits: Limits) model.Exhaustion!void {40        if (self.line_scratch_bytes > limits.max_line_scratch_bytes) {41            return error.DiagramLineScratchCapacityExceeded;42        }43        if (self.document_bytes > limits.max_document_bytes) {44            return error.DiagramDocumentCapacityExceeded;45        }46    }4748    pub fn matches(self: Plan, jsonl: []const u8) bool {49        return self.source_bytes == jsonl.len and50            self.source_hash == std.hash.Wyhash.hash(0, jsonl);51    }52};

1/// Exact diagram-document demand measured before storage acquisition.2pub const DiagramDocumentPlan = diagram.DocumentPlan;