mirror of
https://github.com/SerenityOS/serenity
synced 2024-07-22 02:26:11 +00:00
134 lines
4.9 KiB
C++
134 lines
4.9 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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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 "AST.h"
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#include "NodeVisitor.h"
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#include <AK/DeprecatedString.h>
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#include <AK/Forward.h>
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#include <AK/StringBuilder.h>
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#include <AK/StringView.h>
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#include <AK/Types.h>
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#include <AK/Vector.h>
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#include <ctype.h>
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namespace Shell {
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class Formatter final : public AST::NodeVisitor {
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public:
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Formatter(StringView source, ssize_t cursor = -1, bool parse_as_posix = false)
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: m_builders({ StringBuilder { round_up_to_power_of_two(source.length(), 16) } })
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, m_source(source)
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, m_cursor(cursor)
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, m_parse_as_posix(parse_as_posix)
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{
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if (m_source.is_empty())
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return;
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size_t offset = 0;
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for (auto ptr = m_source.end() - 1; ptr >= m_source.begin() && isspace(*ptr); --ptr)
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++offset;
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m_trivia = m_source.substring_view(m_source.length() - offset, offset);
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}
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explicit Formatter(const AST::Node& node)
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: m_builders({ StringBuilder {} })
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, m_cursor(-1)
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, m_root_node(node)
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{
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}
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DeprecatedString format();
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size_t cursor() const { return m_output_cursor; }
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private:
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virtual void visit(const AST::PathRedirectionNode*) override;
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virtual void visit(const AST::And*) override;
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virtual void visit(const AST::ListConcatenate*) override;
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virtual void visit(const AST::Background*) override;
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virtual void visit(const AST::BarewordLiteral*) override;
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virtual void visit(const AST::BraceExpansion*) override;
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virtual void visit(const AST::CastToCommand*) override;
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virtual void visit(const AST::CastToList*) override;
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virtual void visit(const AST::CloseFdRedirection*) override;
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virtual void visit(const AST::CommandLiteral*) override;
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virtual void visit(const AST::Comment*) override;
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virtual void visit(const AST::ContinuationControl*) override;
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virtual void visit(const AST::DynamicEvaluate*) override;
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virtual void visit(const AST::DoubleQuotedString*) override;
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virtual void visit(const AST::Fd2FdRedirection*) override;
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virtual void visit(const AST::FunctionDeclaration*) override;
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virtual void visit(const AST::ForLoop*) override;
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virtual void visit(const AST::Glob*) override;
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virtual void visit(const AST::Heredoc*) override;
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virtual void visit(const AST::HistoryEvent*) override;
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virtual void visit(const AST::Execute*) override;
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virtual void visit(const AST::IfCond*) override;
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virtual void visit(const AST::ImmediateExpression*) override;
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virtual void visit(const AST::Join*) override;
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virtual void visit(const AST::MatchExpr*) override;
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virtual void visit(const AST::Or*) override;
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virtual void visit(const AST::Pipe*) override;
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virtual void visit(const AST::Range*) override;
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virtual void visit(const AST::ReadRedirection*) override;
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virtual void visit(const AST::ReadWriteRedirection*) override;
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virtual void visit(const AST::Sequence*) override;
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virtual void visit(const AST::Subshell*) override;
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virtual void visit(const AST::Slice*) override;
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virtual void visit(const AST::SimpleVariable*) override;
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virtual void visit(const AST::SpecialVariable*) override;
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virtual void visit(const AST::Juxtaposition*) override;
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virtual void visit(const AST::StringLiteral*) override;
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virtual void visit(const AST::StringPartCompose*) override;
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virtual void visit(const AST::SyntaxError*) override;
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virtual void visit(const AST::Tilde*) override;
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virtual void visit(const AST::VariableDeclarations*) override;
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virtual void visit(const AST::WriteAppendRedirection*) override;
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virtual void visit(const AST::WriteRedirection*) override;
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void test_and_update_output_cursor(const AST::Node*);
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void visited(const AST::Node*);
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void will_visit(const AST::Node*);
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void insert_separator(bool escaped = false);
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void insert_indent();
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ALWAYS_INLINE void with_added_indent(int indent, Function<void()>);
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ALWAYS_INLINE void in_new_block(Function<void()>);
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ALWAYS_INLINE DeprecatedString in_new_builder(Function<void()>, StringBuilder new_builder = StringBuilder {});
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StringBuilder& current_builder() { return m_builders.last(); }
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struct Options {
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size_t max_line_length_hint { 80 };
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bool explicit_parentheses { false };
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bool explicit_braces { false };
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bool in_double_quotes { false };
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bool in_heredoc { false };
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} m_options;
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size_t m_current_indent { 0 };
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Vector<StringBuilder> m_builders;
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StringView m_source;
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size_t m_output_cursor { 0 };
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ssize_t m_cursor { -1 };
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RefPtr<AST::Node const> m_root_node;
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AST::Node const* m_hit_node { nullptr };
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const AST::Node* m_parent_node { nullptr };
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const AST::Node* m_last_visited_node { nullptr };
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StringView m_trivia;
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Vector<DeprecatedString> m_heredocs_to_append_after_sequence;
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bool m_parse_as_posix { false };
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};
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}
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