mirror of
https://github.com/LadybirdBrowser/ladybird.git
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3d07684891
Pure code move, no intended behavior change. The motivation is just to make Parser::parse_operators() less nested and more focused.
93 lines
2.6 KiB
C++
93 lines
2.6 KiB
C++
/*
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* Copyright (c) 2021-2022, Matthew Olsson <mattco@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/SourceLocation.h>
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#include <AK/WeakPtr.h>
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#include <LibPDF/Object.h>
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#include <LibPDF/Operator.h>
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#include <LibPDF/Reader.h>
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#include <LibPDF/XRefTable.h>
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namespace PDF {
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template<typename T, typename... Args>
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static NonnullRefPtr<T> make_object(Args... args)
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requires(IsBaseOf<Object, T>)
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{
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return adopt_ref(*new T(forward<Args>(args)...));
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}
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class Document;
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class Parser {
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public:
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static PDFErrorOr<Vector<Operator>> parse_operators(Document*, ReadonlyBytes);
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Parser(ReadonlyBytes);
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Parser(Document*, ReadonlyBytes);
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void set_document(WeakPtr<Document> const&);
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ByteString parse_comment();
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void move_by(size_t count) { m_reader.move_by(count); }
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void move_to(size_t offset) { m_reader.move_to(offset); }
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enum class CanBeIndirectValue {
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No,
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Yes
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};
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PDFErrorOr<Value> parse_value(CanBeIndirectValue = CanBeIndirectValue::Yes);
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PDFErrorOr<Value> parse_possible_indirect_value_or_ref();
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PDFErrorOr<NonnullRefPtr<IndirectValue>> parse_indirect_value(u32 index, u32 generation);
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PDFErrorOr<NonnullRefPtr<IndirectValue>> parse_indirect_value();
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PDFErrorOr<Value> parse_number();
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PDFErrorOr<NonnullRefPtr<NameObject>> parse_name();
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PDFErrorOr<NonnullRefPtr<StringObject>> parse_string();
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PDFErrorOr<ByteString> parse_literal_string();
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PDFErrorOr<ByteString> parse_hex_string();
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PDFErrorOr<NonnullRefPtr<ArrayObject>> parse_array();
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PDFErrorOr<HashMap<DeprecatedFlyString, Value>> parse_dict_contents_until(char const*);
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PDFErrorOr<NonnullRefPtr<DictObject>> parse_dict();
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PDFErrorOr<void> unfilter_stream(NonnullRefPtr<StreamObject>);
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PDFErrorOr<NonnullRefPtr<StreamObject>> parse_stream(NonnullRefPtr<DictObject> dict);
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PDFErrorOr<Vector<Operator>> parse_operators();
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void set_filters_enabled(bool enabled)
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{
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m_enable_filters = enabled;
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}
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void set_encryption_enabled(bool enabled)
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{
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m_enable_encryption = enabled;
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}
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void push_reference(Reference const& ref) { m_current_reference_stack.append(ref); }
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void pop_reference() { m_current_reference_stack.take_last(); }
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protected:
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PDFErrorOr<NonnullRefPtr<StreamObject>> parse_inline_image();
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Error error(
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ByteString const& message
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#ifdef PDF_DEBUG
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,
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SourceLocation loc = SourceLocation::current()
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#endif
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) const;
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Reader m_reader;
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WeakPtr<Document> m_document;
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Vector<Reference> m_current_reference_stack;
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bool m_enable_encryption { true };
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bool m_enable_filters { true };
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};
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};
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