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/*
* Copyright (c) 2021-2022, Matthew Olsson <mattco@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/SourceLocation.h>
#include <AK/WeakPtr.h>
#include <LibPDF/Object.h>
#include <LibPDF/Operator.h>
#include <LibPDF/Reader.h>
#include <LibPDF/XRefTable.h>
namespace PDF {
template<typename T, typename... Args>
static NonnullRefPtr<T> make_object(Args... args)
requires(IsBaseOf<Object, T>)
{
return adopt_ref(*new T(forward<Args>(args)...));
}
class Document;
class Parser {
public:
static PDFErrorOr<Vector<Operator>> parse_operators(Document*, ReadonlyBytes);
Parser(ReadonlyBytes);
Parser(Document*, ReadonlyBytes);
void set_document(WeakPtr<Document> const&);
DeprecatedString parse_comment();
void move_by(size_t count) { m_reader.move_by(count); }
void move_to(size_t offset) { m_reader.move_to(offset); }
enum class CanBeIndirectValue {
No,
Yes
};
PDFErrorOr<Value> parse_value(CanBeIndirectValue = CanBeIndirectValue::Yes);
PDFErrorOr<Value> parse_possible_indirect_value_or_ref();
PDFErrorOr<NonnullRefPtr<IndirectValue>> parse_indirect_value(u32 index, u32 generation);
PDFErrorOr<NonnullRefPtr<IndirectValue>> parse_indirect_value();
PDFErrorOr<Value> parse_number();
PDFErrorOr<NonnullRefPtr<NameObject>> parse_name();
NonnullRefPtr<StringObject> parse_string();
DeprecatedString parse_literal_string();
DeprecatedString parse_hex_string();
PDFErrorOr<NonnullRefPtr<ArrayObject>> parse_array();
PDFErrorOr<NonnullRefPtr<DictObject>> parse_dict();
PDFErrorOr<NonnullRefPtr<StreamObject>> parse_stream(NonnullRefPtr<DictObject> dict);
PDFErrorOr<Vector<Operator>> parse_operators();
protected:
void push_reference(Reference const& ref) { m_current_reference_stack.append(ref); }
void pop_reference() { m_current_reference_stack.take_last(); }
Error error(
DeprecatedString const& message
#ifdef PDF_DEBUG
,
SourceLocation loc = SourceLocation::current()
#endif
) const;
Reader m_reader;
WeakPtr<Document> m_document;
Vector<Reference> m_current_reference_stack;
bool m_disable_encryption { false };
};
};
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