mirror of
https://github.com/RGBCube/serenity
synced 2025-05-28 22:25:07 +00:00
Shell: Expand Juxtaposition of lists to list products
This commit makes `echo x(foo bar)` create an argv of `echo xfoo xbar`, essentially modeling brace expansions in some shells.
This commit is contained in:
AnotherTest
Andreas Kling
parent
16def040af
commit
8e078cf4ab
5 changed files with 119 additions and 68 deletions
136
Shell/AST.cpp
136
Shell/AST.cpp
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@ -35,6 +35,18 @@
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namespace AST {
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template<typename T, typename... Args>
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static inline RefPtr<T> create(Args... args)
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{
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return adopt(*new T(args...));
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}
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template<typename T>
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static inline RefPtr<T> create(std::initializer_list<RefPtr<Value>> arg)
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{
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return adopt(*new T(arg));
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}
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static inline void print_indented(const String& str, int indent)
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{
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dbgprintf("%.*c%s\n", indent * 2, ' ', str.characters());
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@ -155,7 +167,7 @@ RefPtr<Value> ListConcatenate::run(TheExecutionInputType input_value)
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auto list = m_list->run(input_value);
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auto element = m_element->run(input_value);
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return adopt(*new ListValue({ move(element), move(list) }));
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return create<ListValue>({ move(element), move(list) });
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}
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void ListConcatenate::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -204,7 +216,7 @@ RefPtr<Value> Background::run(TheExecutionInputType input_value)
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auto& last = commands.last();
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last.should_wait = false;
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return adopt(*new CommandSequenceValue(move(commands)));
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return create<CommandSequenceValue>(move(commands));
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}
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void Background::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -238,7 +250,7 @@ void BarewordLiteral::dump(int level) const
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RefPtr<Value> BarewordLiteral::run(TheExecutionInputType)
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{
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return adopt(*new StringValue(m_text));
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return create<StringValue>(m_text);
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}
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void BarewordLiteral::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -294,7 +306,7 @@ RefPtr<Value> CastToCommand::run(TheExecutionInputType input_value)
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auto shell = input_value;
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auto argv = m_inner->run(input_value)->resolve_as_list(input_value);
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return adopt(*new CommandValue(move(argv)));
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return create<CommandValue>(move(argv));
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}
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void CastToCommand::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -350,9 +362,9 @@ RefPtr<Value> CastToList::run(TheExecutionInputType input_value)
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auto values = m_inner->run(input_value)->resolve_as_list(input_value);
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Vector<RefPtr<Value>> cast_values;
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for (auto& value : values)
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cast_values.append(adopt(*new StringValue(value)));
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cast_values.append(create<StringValue>(value));
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return adopt(*new ListValue(cast_values));
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return create<ListValue>(cast_values);
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}
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void CastToList::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -388,7 +400,7 @@ RefPtr<Value> CloseFdRedirection::run(TheExecutionInputType)
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{
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Command command;
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command.redirections.append(*new CloseRedirection(m_fd));
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return adopt(*new CommandValue(move(command)));
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return create<CommandValue>(move(command));
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}
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void CloseFdRedirection::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMetadata)
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@ -415,7 +427,7 @@ void CommandLiteral::dump(int level) const
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RefPtr<Value> CommandLiteral::run(TheExecutionInputType)
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{
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return adopt(*new CommandValue(m_command));
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return create<CommandValue>(m_command);
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}
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CommandLiteral::CommandLiteral(Position position, Command command)
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@ -436,7 +448,7 @@ void Comment::dump(int level) const
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RefPtr<Value> Comment::run(TheExecutionInputType)
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{
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return adopt(*new StringValue(""));
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return create<StringValue>("");
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}
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void Comment::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMetadata)
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@ -468,7 +480,7 @@ RefPtr<Value> DoubleQuotedString::run(TheExecutionInputType input_value)
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builder.join("", values);
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return adopt(*new StringValue(builder.to_string()));
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return create<StringValue>(builder.to_string());
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}
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void DoubleQuotedString::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -514,12 +526,12 @@ RefPtr<Value> DynamicEvaluate::run(TheExecutionInputType input_value)
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if (result->is_string()) {
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auto name_part = result->resolve_as_list(input_value);
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ASSERT(name_part.size() == 1);
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return adopt(*new SimpleVariableValue(name_part[0]));
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return create<SimpleVariableValue>(name_part[0]);
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}
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// If it's anything else, we're just gonna cast it to a list.
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auto list = result->resolve_as_list(input_value);
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return adopt(*new CommandValue(move(list)));
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return create<CommandValue>(move(list));
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}
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void DynamicEvaluate::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -556,7 +568,7 @@ RefPtr<Value> Fd2FdRedirection::run(TheExecutionInputType)
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{
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Command command;
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command.redirections.append(*new FdRedirection(source_fd, dest_fd, Rewiring::Close::None));
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return adopt(*new CommandValue(move(command)));
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return create<CommandValue>(move(command));
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}
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void Fd2FdRedirection::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMetadata)
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@ -583,7 +595,7 @@ void Glob::dump(int level) const
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RefPtr<Value> Glob::run(TheExecutionInputType)
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{
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return adopt(*new GlobValue(m_text));
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return create<GlobValue>(m_text);
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}
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void Glob::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMetadata metadata)
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@ -631,7 +643,7 @@ RefPtr<Value> Execute::run(TheExecutionInputType input_value)
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auto* ast = static_cast<Execute*>(subcommand_ast.ptr());
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subcommand_ast = ast->command();
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}
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RefPtr<Node> substitute = adopt(*new Join(position(), move(subcommand_ast), adopt(*new CommandLiteral(position(), command))));
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RefPtr<Node> substitute = create<Join>(position(), move(subcommand_ast), create<CommandLiteral>(position(), command));
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commands.append(substitute->run(input_value)->resolve_as_commands(input_value));
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} else {
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commands.append(command);
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@ -685,7 +697,7 @@ RefPtr<Value> Execute::run(TheExecutionInputType input_value)
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int rc = pipe(pipefd);
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if (rc < 0) {
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dbg() << "Error: cannot pipe(): " << strerror(errno);
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return adopt(*new StringValue(""));
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return create<StringValue>("");
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}
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auto last_in_commands = commands.take_last();
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@ -731,7 +743,7 @@ RefPtr<Value> Execute::run(TheExecutionInputType input_value)
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dbg() << "close() failed: " << strerror(errno);
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}
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return adopt(*new StringValue(builder.build(), shell->local_variable_or("IFS", "\n")));
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return create<StringValue>(builder.build(), shell->local_variable_or("IFS", "\n"));
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}
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run_commands(commands);
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@ -739,7 +751,7 @@ RefPtr<Value> Execute::run(TheExecutionInputType input_value)
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shell->block_on_job(job);
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}
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return adopt(*new JobValue(move(job)));
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return create<JobValue>(move(job));
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}
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void Execute::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -817,7 +829,7 @@ RefPtr<Value> Join::run(TheExecutionInputType input_value)
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commands.append(command);
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commands.append(right);
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return adopt(*new CommandSequenceValue(move(commands)));
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return create<CommandSequenceValue>(move(commands));
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}
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void Join::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -920,7 +932,7 @@ RefPtr<Value> Pipe::run(TheExecutionInputType input_value)
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int rc = pipe(pipefd);
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if (rc < 0) {
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dbg() << "Error: cannot pipe(): " << strerror(errno);
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return adopt(*new StringValue(""));
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return create<StringValue>("");
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}
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auto left = m_left->run(input_value)->resolve_as_commands(input_value);
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auto right = m_right->run(input_value)->resolve_as_commands(input_value);
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@ -939,7 +951,7 @@ RefPtr<Value> Pipe::run(TheExecutionInputType input_value)
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commands.append(first_in_right);
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commands.append(right);
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return adopt(*new CommandSequenceValue(move(commands)));
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return create<CommandSequenceValue>(move(commands));
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}
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void Pipe::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -1041,7 +1053,7 @@ RefPtr<Value> ReadRedirection::run(TheExecutionInputType input_value)
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builder.join(" ", path_segments);
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command.redirections.append(*new PathRedirection(builder.to_string(), m_fd, PathRedirection::Read));
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return adopt(*new CommandValue(move(command)));
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return create<CommandValue>(move(command));
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}
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ReadRedirection::ReadRedirection(Position position, int fd, RefPtr<Node> path)
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@ -1068,7 +1080,7 @@ RefPtr<Value> ReadWriteRedirection::run(TheExecutionInputType input_value)
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builder.join(" ", path_segments);
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command.redirections.append(*new PathRedirection(builder.to_string(), m_fd, PathRedirection::ReadWrite));
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return adopt(*new CommandValue(move(command)));
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return create<CommandValue>(move(command));
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}
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ReadWriteRedirection::ReadWriteRedirection(Position position, int fd, RefPtr<Node> path)
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@ -1096,7 +1108,7 @@ RefPtr<Value> Sequence::run(TheExecutionInputType input_value)
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commands.append(left);
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commands.append(right);
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return adopt(*new CommandSequenceValue(move(commands)));
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return create<CommandSequenceValue>(move(commands));
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}
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void Sequence::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -1135,7 +1147,7 @@ void SimpleVariable::dump(int level) const
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RefPtr<Value> SimpleVariable::run(TheExecutionInputType)
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{
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return adopt(*new SimpleVariableValue(m_name));
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return create<SimpleVariableValue>(m_name);
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}
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void SimpleVariable::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMetadata metadata)
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@ -1188,7 +1200,7 @@ void SpecialVariable::dump(int level) const
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RefPtr<Value> SpecialVariable::run(TheExecutionInputType)
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{
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return adopt(*new SpecialVariableValue(m_name));
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return create<SpecialVariableValue>(m_name);
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}
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void SpecialVariable::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMetadata)
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@ -1219,26 +1231,54 @@ SpecialVariable::~SpecialVariable()
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{
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}
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void StringConcatenate::dump(int level) const
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void Juxtaposition::dump(int level) const
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{
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Node::dump(level);
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m_left->dump(level + 1);
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m_right->dump(level + 1);
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}
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RefPtr<Value> StringConcatenate::run(TheExecutionInputType input_value)
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RefPtr<Value> Juxtaposition::run(TheExecutionInputType input_value)
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{
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auto left = m_left->run(input_value)->resolve_as_list(input_value);
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auto right = m_right->run(input_value)->resolve_as_list(input_value);
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auto left_value = m_left->run(input_value);
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auto right_value = m_right->run(input_value);
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auto left = left_value->resolve_as_list(input_value);
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auto right = right_value->resolve_as_list(input_value);
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if (left_value->is_string() && right_value->is_string()) {
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ASSERT(left.size() == 1);
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ASSERT(right.size() == 1);
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StringBuilder builder;
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builder.join(" ", left);
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builder.join(" ", right);
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builder.append(left[0]);
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builder.append(right[0]);
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return adopt(*new StringValue(builder.to_string()));
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return create<StringValue>(builder.to_string());
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}
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// Otherwise, treat them as lists and create a list product.
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if (left.is_empty() || right.is_empty())
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return create<ListValue>({});
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Vector<String> result;
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result.ensure_capacity(left.size() * right.size());
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StringBuilder builder;
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for (auto& left_element : left) {
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for (auto& right_element : right) {
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builder.append(left_element);
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builder.append(right_element);
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result.append(builder.to_string());
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builder.clear();
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}
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}
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return create<ListValue>(move(result));
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}
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void StringConcatenate::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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void Juxtaposition::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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{
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m_left->highlight_in_editor(editor, shell, metadata);
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@ -1247,7 +1287,7 @@ void StringConcatenate::highlight_in_editor(Line::Editor& editor, Shell& shell,
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m_right->highlight_in_editor(editor, shell, metadata);
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}
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HitTestResult StringConcatenate::hit_test_position(size_t offset)
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HitTestResult Juxtaposition::hit_test_position(size_t offset)
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{
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if (!position().contains(offset))
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return {};
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@ -1258,14 +1298,14 @@ HitTestResult StringConcatenate::hit_test_position(size_t offset)
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return m_right->hit_test_position(offset);
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}
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StringConcatenate::StringConcatenate(Position position, RefPtr<Node> left, RefPtr<Node> right)
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Juxtaposition::Juxtaposition(Position position, RefPtr<Node> left, RefPtr<Node> right)
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: Node(move(position))
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, m_left(move(left))
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, m_right(move(right))
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{
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}
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StringConcatenate::~StringConcatenate()
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Juxtaposition::~Juxtaposition()
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{
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}
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@ -1277,7 +1317,7 @@ void StringLiteral::dump(int level) const
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RefPtr<Value> StringLiteral::run(TheExecutionInputType)
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{
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return adopt(*new StringValue(m_text));
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return create<StringValue>(m_text);
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}
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void StringLiteral::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMetadata metadata)
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@ -1314,7 +1354,7 @@ RefPtr<Value> StringPartCompose::run(TheExecutionInputType input_value)
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builder.join(" ", left);
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builder.join(" ", right);
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return adopt(*new StringValue(builder.to_string()));
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return create<StringValue>(builder.to_string());
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}
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void StringPartCompose::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -1353,7 +1393,7 @@ void SyntaxError::dump(int level) const
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RefPtr<Value> SyntaxError::run(TheExecutionInputType)
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{
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dbg() << "SYNTAX ERROR AAAA";
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return adopt(*new StringValue(""));
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return create<StringValue>("");
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}
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void SyntaxError::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMetadata)
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@ -1378,7 +1418,7 @@ void Tilde::dump(int level) const
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RefPtr<Value> Tilde::run(TheExecutionInputType)
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{
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return adopt(*new TildeValue(m_username));
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return create<TildeValue>(m_username);
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}
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void Tilde::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMetadata)
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@ -1432,7 +1472,7 @@ RefPtr<Value> WriteAppendRedirection::run(TheExecutionInputType input_value)
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builder.join(" ", path_segments);
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command.redirections.append(*new PathRedirection(builder.to_string(), m_fd, PathRedirection::WriteAppend));
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return adopt(*new CommandValue(move(command)));
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return create<CommandValue>(move(command));
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}
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WriteAppendRedirection::WriteAppendRedirection(Position position, int fd, RefPtr<Node> path)
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@ -1459,7 +1499,7 @@ RefPtr<Value> WriteRedirection::run(TheExecutionInputType input_value)
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builder.join(" ", path_segments);
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command.redirections.append(*new PathRedirection(builder.to_string(), m_fd, PathRedirection::Write));
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return adopt(*new CommandValue(move(command)));
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return create<CommandValue>(move(command));
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}
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WriteRedirection::WriteRedirection(Position position, int fd, RefPtr<Node> path)
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@ -1498,7 +1538,7 @@ RefPtr<Value> VariableDeclarations::run(TheExecutionInputType input_value)
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}
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}
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return adopt(*new ListValue(Vector<String> {}));
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return create<ListValue>({});
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}
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void VariableDeclarations::highlight_in_editor(Line::Editor& editor, Shell& shell, HighlightMetadata metadata)
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@ -1546,10 +1586,6 @@ Vector<AST::Command> Value::resolve_as_commands(TheExecutionInputType input_valu
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return { command };
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}
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ListValue::~ListValue()
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{
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}
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ListValue::ListValue(Vector<String> values)
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{
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m_contained_values.ensure_capacity(values.size());
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@ -1557,6 +1593,10 @@ ListValue::ListValue(Vector<String> values)
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m_contained_values.append(adopt(*new StringValue(move(str))));
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}
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ListValue::~ListValue()
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{
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}
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Vector<String> ListValue::resolve_as_list(TheExecutionInputType input_value)
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{
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Vector<String> values;
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|
|||
|
|
@ -690,17 +690,17 @@ private:
|
|||
char m_name { -1 };
|
||||
};
|
||||
|
||||
class StringConcatenate final : public Node {
|
||||
class Juxtaposition final : public Node {
|
||||
public:
|
||||
StringConcatenate(Position, RefPtr<Node>, RefPtr<Node>);
|
||||
virtual ~StringConcatenate();
|
||||
Juxtaposition(Position, RefPtr<Node>, RefPtr<Node>);
|
||||
virtual ~Juxtaposition();
|
||||
|
||||
private:
|
||||
virtual void dump(int level) const override;
|
||||
virtual RefPtr<Value> run(TheExecutionInputType) override;
|
||||
virtual void highlight_in_editor(Line::Editor&, Shell&, HighlightMetadata = {}) override;
|
||||
virtual HitTestResult hit_test_position(size_t) override;
|
||||
virtual String class_name() const override { return "StringConcatenate"; }
|
||||
virtual String class_name() const override { return "Juxtaposition"; }
|
||||
|
||||
RefPtr<Node> m_left;
|
||||
RefPtr<Node> m_right;
|
||||
|
|
|
|||
|
|
@ -262,8 +262,9 @@ RefPtr<AST::Node> Parser::parse_command()
|
|||
if (!list_expr)
|
||||
return nullptr;
|
||||
|
||||
auto next_command = parse_command();
|
||||
auto cast = create<AST::CastToCommand>(move(list_expr)); // Cast List Command
|
||||
|
||||
auto next_command = parse_command();
|
||||
if (!next_command)
|
||||
return cast;
|
||||
|
||||
|
|
@ -396,6 +397,16 @@ RefPtr<AST::Node> Parser::parse_expression()
|
|||
auto rule_start = push_start();
|
||||
auto starting_char = peek();
|
||||
|
||||
auto read_concat = [&](auto expr) -> RefPtr<AST::Node> {
|
||||
if (is_whitespace(peek()))
|
||||
return expr;
|
||||
|
||||
if (auto next_expr = parse_expression())
|
||||
return create<AST::Juxtaposition>(move(expr), move(next_expr));
|
||||
|
||||
return expr;
|
||||
};
|
||||
|
||||
if (strchr("&|[]){} ;<>", starting_char) != nullptr)
|
||||
return nullptr;
|
||||
|
||||
|
|
@ -409,10 +420,10 @@ RefPtr<AST::Node> Parser::parse_expression()
|
|||
|
||||
if (starting_char == '$') {
|
||||
if (auto variable = parse_variable())
|
||||
return variable;
|
||||
return read_concat(variable);
|
||||
|
||||
if (auto inline_exec = parse_evaluate())
|
||||
return inline_exec;
|
||||
return read_concat(inline_exec);
|
||||
}
|
||||
|
||||
if (starting_char == '#')
|
||||
|
|
@ -424,11 +435,11 @@ RefPtr<AST::Node> Parser::parse_expression()
|
|||
if (!list)
|
||||
list = create<AST::SyntaxError>();
|
||||
if (!expect(')'))
|
||||
return create<AST::SyntaxError>();
|
||||
return create<AST::CastToList>(move(list)); // Cast To List
|
||||
return read_concat(create<AST::SyntaxError>());
|
||||
return read_concat(create<AST::CastToList>(move(list))); // Cast To List
|
||||
}
|
||||
|
||||
return parse_string_composite();
|
||||
return read_concat(parse_string_composite());
|
||||
}
|
||||
|
||||
RefPtr<AST::Node> Parser::parse_string_composite()
|
||||
|
|
@ -436,35 +447,35 @@ RefPtr<AST::Node> Parser::parse_string_composite()
|
|||
auto rule_start = push_start();
|
||||
if (auto string = parse_string()) {
|
||||
if (auto next_part = parse_string_composite())
|
||||
return create<AST::StringConcatenate>(move(string), move(next_part)); // Concatenate String StringComposite
|
||||
return create<AST::Juxtaposition>(move(string), move(next_part)); // Concatenate String StringComposite
|
||||
|
||||
return string;
|
||||
}
|
||||
|
||||
if (auto variable = parse_variable()) {
|
||||
if (auto next_part = parse_string_composite())
|
||||
return create<AST::StringConcatenate>(move(variable), move(next_part)); // Concatenate Variable StringComposite
|
||||
return create<AST::Juxtaposition>(move(variable), move(next_part)); // Concatenate Variable StringComposite
|
||||
|
||||
return variable;
|
||||
}
|
||||
|
||||
if (auto glob = parse_glob()) {
|
||||
if (auto next_part = parse_string_composite())
|
||||
return create<AST::StringConcatenate>(move(glob), move(next_part)); // Concatenate Glob StringComposite
|
||||
return create<AST::Juxtaposition>(move(glob), move(next_part)); // Concatenate Glob StringComposite
|
||||
|
||||
return glob;
|
||||
}
|
||||
|
||||
if (auto bareword = parse_bareword()) {
|
||||
if (auto next_part = parse_string_composite())
|
||||
return create<AST::StringConcatenate>(move(bareword), move(next_part)); // Concatenate Bareword StringComposite
|
||||
return create<AST::Juxtaposition>(move(bareword), move(next_part)); // Concatenate Bareword StringComposite
|
||||
|
||||
return bareword;
|
||||
}
|
||||
|
||||
if (auto inline_command = parse_evaluate()) {
|
||||
if (auto next_part = parse_string_composite())
|
||||
return create<AST::StringConcatenate>(move(inline_command), move(next_part)); // Concatenate Execute StringComposite
|
||||
return create<AST::Juxtaposition>(move(inline_command), move(next_part)); // Concatenate Execute StringComposite
|
||||
|
||||
return inline_command;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -120,10 +120,10 @@ redirection :: number? '>'{1,2} ' '* string_composite
|
|||
|
||||
list_expression :: ' '* expression (' '+ list_expression)?
|
||||
|
||||
expression :: evaluate
|
||||
| string_composite
|
||||
| comment
|
||||
| '(' list_expression ')'
|
||||
expression :: evaluate expression?
|
||||
| string_composite expression?
|
||||
| comment expession?
|
||||
| '(' list_expression ')' expression?
|
||||
|
||||
evaluate :: '$' expression {eval / dynamic resolve}
|
||||
|
||||
|
|
|
|||
|
|
@ -324,7 +324,7 @@ int Shell::run_command(const StringView& cmd)
|
|||
if (!command)
|
||||
return 0;
|
||||
|
||||
#ifdef SH_DEBUG
|
||||
#ifndef SH_DEBUG
|
||||
dbg() << "Command follows";
|
||||
command->dump(0);
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue