mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-07 19:57:45 +03:00
738 lines
24 KiB
C++
738 lines
24 KiB
C++
/*
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* Copyright (c) 2020-2021, 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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#include "Spreadsheet.h"
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#include "JSIntegration.h"
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#include "Workbook.h"
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#include <AK/ByteBuffer.h>
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#include <AK/Debug.h>
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#include <AK/GenericLexer.h>
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#include <AK/JsonArray.h>
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#include <AK/JsonObject.h>
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#include <AK/JsonParser.h>
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#include <AK/ScopeGuard.h>
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#include <AK/TemporaryChange.h>
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#include <AK/URL.h>
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#include <LibCore/File.h>
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#include <LibJS/Parser.h>
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#include <LibJS/Runtime/FunctionObject.h>
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#include <ctype.h>
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#include <unistd.h>
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namespace Spreadsheet {
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Sheet::Sheet(const StringView& name, Workbook& workbook)
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: Sheet(workbook)
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{
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m_name = name;
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for (size_t i = 0; i < default_row_count; ++i)
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add_row();
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for (size_t i = 0; i < default_column_count; ++i)
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add_column();
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}
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Sheet::Sheet(Workbook& workbook)
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: m_workbook(workbook)
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{
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JS::DeferGC defer_gc(m_workbook.interpreter().heap());
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m_global_object = m_workbook.interpreter().heap().allocate_without_global_object<SheetGlobalObject>(*this);
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global_object().initialize_global_object();
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global_object().define_direct_property("workbook", m_workbook.workbook_object(), JS::default_attributes);
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global_object().define_direct_property("thisSheet", &global_object(), JS::default_attributes); // Self-reference is unfortunate, but required.
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// Note: We have to set the global object here otherwise the functions in runtime.js are not registered correctly.
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interpreter().realm().set_global_object(global_object(), &global_object());
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// Sadly, these have to be evaluated once per sheet.
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auto file_or_error = Core::File::open("/res/js/Spreadsheet/runtime.js", Core::OpenMode::ReadOnly);
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if (!file_or_error.is_error()) {
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auto buffer = file_or_error.value()->read_all();
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JS::Parser parser { JS::Lexer(buffer) };
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if (parser.has_errors()) {
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warnln("Spreadsheet: Failed to parse runtime code");
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parser.print_errors();
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} else {
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interpreter().run(global_object(), parser.parse_program());
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if (auto* exception = interpreter().exception()) {
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warnln("Spreadsheet: Failed to run runtime code:");
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for (auto& traceback_frame : exception->traceback()) {
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auto& function_name = traceback_frame.function_name;
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auto& source_range = traceback_frame.source_range;
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dbgln(" {} at {}:{}:{}", function_name, source_range.filename, source_range.start.line, source_range.start.column);
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}
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interpreter().vm().clear_exception();
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}
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}
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}
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}
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Sheet::~Sheet()
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{
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}
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JS::Interpreter& Sheet::interpreter() const
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{
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return m_workbook.interpreter();
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}
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size_t Sheet::add_row()
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{
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return m_rows++;
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}
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static Optional<size_t> convert_from_string(StringView str, unsigned base = 26, StringView map = {})
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{
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if (map.is_null())
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map = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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VERIFY(base >= 2 && base <= map.length());
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size_t value = 0;
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auto const len = str.length();
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for (auto i = 0u; i < len; i++) {
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auto maybe_index = map.find(str[i]);
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if (!maybe_index.has_value())
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return {};
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size_t digit_value = maybe_index.value();
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// NOTE: Refer to the note in `String::bijective_base_from()'.
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if (i == 0 && len > 1)
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++digit_value;
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value += digit_value * AK::pow<float>(base, len - 1 - i);
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}
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return value;
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}
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String Sheet::add_column()
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{
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auto next_column = String::bijective_base_from(m_columns.size());
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m_columns.append(next_column);
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return next_column;
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}
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void Sheet::update()
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{
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if (m_should_ignore_updates) {
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m_update_requested = true;
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return;
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}
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m_visited_cells_in_update.clear();
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Vector<Cell&> cells_copy;
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// Grab a copy as updates might insert cells into the table.
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for (auto& it : m_cells) {
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if (it.value->dirty()) {
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cells_copy.append(*it.value);
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m_workbook.set_dirty(true);
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}
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}
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for (auto& cell : cells_copy)
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update(cell);
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m_visited_cells_in_update.clear();
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}
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void Sheet::update(Cell& cell)
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{
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if (m_should_ignore_updates) {
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m_update_requested = true;
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return;
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}
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if (cell.dirty()) {
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if (has_been_visited(&cell)) {
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// This may be part of an cyclic reference chain,
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// so just ignore it.
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cell.clear_dirty();
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return;
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}
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m_visited_cells_in_update.set(&cell);
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cell.update_data({});
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}
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}
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Sheet::ValueAndException Sheet::evaluate(const StringView& source, Cell* on_behalf_of)
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{
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TemporaryChange cell_change { m_current_cell_being_evaluated, on_behalf_of };
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ScopeGuard clear_exception { [&] { interpreter().vm().clear_exception(); } };
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auto parser = JS::Parser(JS::Lexer(source));
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auto program = parser.parse_program();
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if (parser.has_errors() || interpreter().exception())
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return { JS::js_undefined(), interpreter().exception() };
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// FIXME: This creates a GlobalEnvironment for every evaluate call which we might be able to circumvent with multiple realms.
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interpreter().realm().set_global_object(global_object(), &global_object());
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interpreter().run(global_object(), program);
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if (interpreter().exception()) {
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auto exc = interpreter().exception();
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return { JS::js_undefined(), exc };
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}
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auto value = interpreter().vm().last_value();
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if (value.is_empty())
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return { JS::js_undefined(), {} };
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return { value, {} };
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}
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Cell* Sheet::at(const StringView& name)
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{
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auto pos = parse_cell_name(name);
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if (pos.has_value())
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return at(pos.value());
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return nullptr;
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}
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Cell* Sheet::at(const Position& position)
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{
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auto it = m_cells.find(position);
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if (it == m_cells.end())
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return nullptr;
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return it->value;
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}
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Optional<Position> Sheet::parse_cell_name(const StringView& name) const
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{
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GenericLexer lexer(name);
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auto col = lexer.consume_while(isalpha);
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auto row = lexer.consume_while(isdigit);
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if (!lexer.is_eof() || row.is_empty() || col.is_empty())
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return {};
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auto it = m_columns.find(col);
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if (it == m_columns.end())
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return {};
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return Position { it.index(), row.to_uint().value() };
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}
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Optional<size_t> Sheet::column_index(const StringView& column_name) const
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{
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auto maybe_index = convert_from_string(column_name);
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if (!maybe_index.has_value())
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return {};
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auto index = maybe_index.value();
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if (m_columns.size() <= index || m_columns[index] != column_name) {
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auto it = m_columns.find(column_name);
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if (it == m_columns.end())
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return {};
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index = it.index();
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}
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return index;
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}
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Optional<String> Sheet::column_arithmetic(const StringView& column_name, int offset)
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{
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auto maybe_index = column_index(column_name);
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if (!maybe_index.has_value())
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return {};
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if (offset < 0 && maybe_index.value() < (size_t)(0 - offset))
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return m_columns.first();
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auto index = maybe_index.value() + offset;
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if (m_columns.size() > index)
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return m_columns[index];
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for (size_t i = m_columns.size(); i <= index; ++i)
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add_column();
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return m_columns.last();
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}
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Cell* Sheet::from_url(const URL& url)
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{
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auto maybe_position = position_from_url(url);
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if (!maybe_position.has_value())
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return nullptr;
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return at(maybe_position.value());
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}
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Optional<Position> Sheet::position_from_url(const URL& url) const
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{
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if (!url.is_valid()) {
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dbgln("Invalid url: {}", url.to_string());
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return {};
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}
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if (url.protocol() != "spreadsheet" || url.host() != "cell") {
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dbgln("Bad url: {}", url.to_string());
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return {};
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}
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// FIXME: Figure out a way to do this cross-process.
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VERIFY(url.path() == String::formatted("/{}", getpid()));
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return parse_cell_name(url.fragment());
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}
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Position Sheet::offset_relative_to(const Position& base, const Position& offset, const Position& offset_base) const
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{
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if (offset.column >= m_columns.size()) {
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dbgln("Column '{}' does not exist!", offset.column);
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return base;
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}
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if (offset_base.column >= m_columns.size()) {
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dbgln("Column '{}' does not exist!", offset_base.column);
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return base;
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}
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if (base.column >= m_columns.size()) {
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dbgln("Column '{}' does not exist!", base.column);
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return offset;
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}
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auto new_column = offset.column + base.column - offset_base.column;
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auto new_row = offset.row + base.row - offset_base.row;
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return { new_column, new_row };
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}
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void Sheet::copy_cells(Vector<Position> from, Vector<Position> to, Optional<Position> resolve_relative_to, CopyOperation copy_operation)
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{
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auto copy_to = [&](auto& source_position, Position target_position) {
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auto& target_cell = ensure(target_position);
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auto* source_cell = at(source_position);
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if (!source_cell) {
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target_cell.set_data("");
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return;
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}
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target_cell.copy_from(*source_cell);
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if (copy_operation == CopyOperation::Cut)
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source_cell->set_data("");
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};
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if (from.size() == to.size()) {
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auto from_it = from.begin();
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// FIXME: Ordering.
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for (auto& position : to)
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copy_to(*from_it++, position);
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return;
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}
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if (to.size() == 1) {
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// Resolve each index as relative to the first index offset from the selection.
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auto& target = to.first();
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for (auto& position : from) {
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dbgln_if(COPY_DEBUG, "Paste from '{}' to '{}'", position.to_url(*this), target.to_url(*this));
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copy_to(position, resolve_relative_to.has_value() ? offset_relative_to(target, position, resolve_relative_to.value()) : target);
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}
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return;
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}
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if (from.size() == 1) {
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// Fill the target selection with the single cell.
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auto& source = from.first();
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for (auto& position : to) {
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dbgln_if(COPY_DEBUG, "Paste from '{}' to '{}'", source.to_url(*this), position.to_url(*this));
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copy_to(source, resolve_relative_to.has_value() ? offset_relative_to(position, source, resolve_relative_to.value()) : position);
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}
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return;
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}
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// Just disallow misaligned copies.
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dbgln("Cannot copy {} cells to {} cells", from.size(), to.size());
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}
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RefPtr<Sheet> Sheet::from_json(const JsonObject& object, Workbook& workbook)
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{
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auto sheet = adopt_ref(*new Sheet(workbook));
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auto rows = object.get("rows").to_u32(default_row_count);
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auto columns = object.get("columns");
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auto name = object.get("name").as_string_or("Sheet");
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if (object.has("cells") && !object.has_object("cells"))
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return {};
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sheet->set_name(name);
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for (size_t i = 0; i < max(rows, (unsigned)Sheet::default_row_count); ++i)
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sheet->add_row();
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// FIXME: Better error checking.
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if (columns.is_array()) {
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columns.as_array().for_each([&](auto& value) {
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sheet->m_columns.append(value.as_string());
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return IterationDecision::Continue;
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});
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}
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if (sheet->m_columns.size() < default_column_count && sheet->columns_are_standard()) {
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for (size_t i = sheet->m_columns.size(); i < default_column_count; ++i)
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sheet->add_column();
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}
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auto json = sheet->interpreter().global_object().get_without_side_effects("JSON");
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auto& parse_function = json.as_object().get_without_side_effects("parse").as_function();
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auto read_format = [](auto& format, const auto& obj) {
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if (auto value = obj.get("foreground_color"); value.is_string())
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format.foreground_color = Color::from_string(value.as_string());
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if (auto value = obj.get("background_color"); value.is_string())
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format.background_color = Color::from_string(value.as_string());
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};
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if (object.has_object("cells")) {
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object.get("cells").as_object().for_each_member([&](auto& name, JsonValue const& value) {
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auto position_option = sheet->parse_cell_name(name);
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if (!position_option.has_value())
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return IterationDecision::Continue;
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auto position = position_option.value();
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auto& obj = value.as_object();
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auto kind = obj.get("kind").as_string_or("LiteralString") == "LiteralString" ? Cell::LiteralString : Cell::Formula;
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OwnPtr<Cell> cell;
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switch (kind) {
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case Cell::LiteralString:
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cell = make<Cell>(obj.get("value").to_string(), position, *sheet);
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break;
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case Cell::Formula: {
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auto& interpreter = sheet->interpreter();
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auto value_or_error = interpreter.vm().call(parse_function, json, JS::js_string(interpreter.heap(), obj.get("value").as_string()));
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VERIFY(!value_or_error.is_error());
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cell = make<Cell>(obj.get("source").to_string(), value_or_error.release_value(), position, *sheet);
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break;
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}
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}
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auto type_name = obj.has("type") ? obj.get("type").to_string() : "Numeric";
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cell->set_type(type_name);
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auto type_meta = obj.get("type_metadata");
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if (type_meta.is_object()) {
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auto& meta_obj = type_meta.as_object();
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auto meta = cell->type_metadata();
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if (auto value = meta_obj.get("length"); value.is_number())
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meta.length = value.to_i32();
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if (auto value = meta_obj.get("format"); value.is_string())
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meta.format = value.as_string();
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if (auto value = meta_obj.get("alignment"); value.is_string()) {
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auto alignment = Gfx::text_alignment_from_string(value.as_string());
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if (alignment.has_value())
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meta.alignment = alignment.value();
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}
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read_format(meta.static_format, meta_obj);
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cell->set_type_metadata(move(meta));
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}
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auto conditional_formats = obj.get("conditional_formats");
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auto cformats = cell->conditional_formats();
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if (conditional_formats.is_array()) {
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conditional_formats.as_array().for_each([&](const auto& fmt_val) {
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if (!fmt_val.is_object())
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return IterationDecision::Continue;
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auto& fmt_obj = fmt_val.as_object();
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auto fmt_cond = fmt_obj.get("condition").to_string();
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if (fmt_cond.is_empty())
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return IterationDecision::Continue;
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ConditionalFormat fmt;
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fmt.condition = move(fmt_cond);
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read_format(fmt, fmt_obj);
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cformats.append(move(fmt));
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return IterationDecision::Continue;
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});
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cell->set_conditional_formats(move(cformats));
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}
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auto evaluated_format = obj.get("evaluated_formats");
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if (evaluated_format.is_object()) {
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auto& evaluated_format_obj = evaluated_format.as_object();
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auto& evaluated_fmts = cell->evaluated_formats();
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read_format(evaluated_fmts, evaluated_format_obj);
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}
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sheet->m_cells.set(position, cell.release_nonnull());
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return IterationDecision::Continue;
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});
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}
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return sheet;
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}
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Position Sheet::written_data_bounds() const
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{
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Position bound;
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for (auto& entry : m_cells) {
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if (entry.value->data().is_empty())
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continue;
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if (entry.key.row >= bound.row)
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bound.row = entry.key.row;
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if (entry.key.column >= bound.column)
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bound.column = entry.key.column;
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}
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return bound;
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}
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/// The sheet is allowed to have nonstandard column names
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/// this checks whether all existing columns are 'standard'
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/// (i.e. as generated by 'String::bijective_base_from()'
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bool Sheet::columns_are_standard() const
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{
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for (size_t i = 0; i < m_columns.size(); ++i) {
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if (m_columns[i] != String::bijective_base_from(i))
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return false;
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}
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return true;
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}
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JsonObject Sheet::to_json() const
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{
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JsonObject object;
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object.set("name", m_name);
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auto save_format = [](const auto& format, auto& obj) {
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if (format.foreground_color.has_value())
|
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obj.set("foreground_color", format.foreground_color.value().to_string());
|
|
if (format.background_color.has_value())
|
|
obj.set("background_color", format.background_color.value().to_string());
|
|
};
|
|
|
|
auto bottom_right = written_data_bounds();
|
|
|
|
if (!columns_are_standard()) {
|
|
auto columns = JsonArray();
|
|
for (auto& column : m_columns)
|
|
columns.append(column);
|
|
object.set("columns", move(columns));
|
|
}
|
|
object.set("rows", bottom_right.row + 1);
|
|
|
|
JsonObject cells;
|
|
for (auto& it : m_cells) {
|
|
StringBuilder builder;
|
|
builder.append(column(it.key.column));
|
|
builder.appendff("{}", it.key.row);
|
|
auto key = builder.to_string();
|
|
|
|
JsonObject data;
|
|
data.set("kind", it.value->kind() == Cell::Kind::Formula ? "Formula" : "LiteralString");
|
|
if (it.value->kind() == Cell::Formula) {
|
|
data.set("source", it.value->data());
|
|
auto json = interpreter().global_object().get_without_side_effects("JSON");
|
|
auto stringified_or_error = interpreter().vm().call(json.as_object().get_without_side_effects("stringify").as_function(), json, it.value->evaluated_data());
|
|
VERIFY(!stringified_or_error.is_error());
|
|
data.set("value", stringified_or_error.release_value().to_string_without_side_effects());
|
|
} else {
|
|
data.set("value", it.value->data());
|
|
}
|
|
|
|
// Set type & meta
|
|
auto& type = it.value->type();
|
|
auto& meta = it.value->type_metadata();
|
|
data.set("type", type.name());
|
|
|
|
JsonObject metadata_object;
|
|
metadata_object.set("length", meta.length);
|
|
metadata_object.set("format", meta.format);
|
|
metadata_object.set("alignment", Gfx::to_string(meta.alignment));
|
|
save_format(meta.static_format, metadata_object);
|
|
|
|
data.set("type_metadata", move(metadata_object));
|
|
|
|
// Set conditional formats
|
|
JsonArray conditional_formats;
|
|
for (auto& fmt : it.value->conditional_formats()) {
|
|
JsonObject fmt_object;
|
|
fmt_object.set("condition", fmt.condition);
|
|
save_format(fmt, fmt_object);
|
|
|
|
conditional_formats.append(move(fmt_object));
|
|
}
|
|
|
|
data.set("conditional_formats", move(conditional_formats));
|
|
|
|
auto& evaluated_formats = it.value->evaluated_formats();
|
|
JsonObject evaluated_formats_obj;
|
|
|
|
save_format(evaluated_formats, evaluated_formats_obj);
|
|
data.set("evaluated_formats", move(evaluated_formats_obj));
|
|
|
|
cells.set(key, move(data));
|
|
}
|
|
object.set("cells", move(cells));
|
|
|
|
return object;
|
|
}
|
|
|
|
Vector<Vector<String>> Sheet::to_xsv() const
|
|
{
|
|
Vector<Vector<String>> data;
|
|
|
|
auto bottom_right = written_data_bounds();
|
|
|
|
// First row = headers.
|
|
size_t column_count = m_columns.size();
|
|
if (columns_are_standard()) {
|
|
column_count = bottom_right.column + 1;
|
|
Vector<String> cols;
|
|
for (size_t i = 0; i < column_count; ++i)
|
|
cols.append(m_columns[i]);
|
|
data.append(move(cols));
|
|
} else {
|
|
data.append(m_columns);
|
|
}
|
|
|
|
for (size_t i = 0; i <= bottom_right.row; ++i) {
|
|
Vector<String> row;
|
|
row.resize(column_count);
|
|
for (size_t j = 0; j < column_count; ++j) {
|
|
auto cell = at({ j, i });
|
|
if (cell)
|
|
row[j] = cell->typed_display();
|
|
}
|
|
|
|
data.append(move(row));
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
RefPtr<Sheet> Sheet::from_xsv(const Reader::XSV& xsv, Workbook& workbook)
|
|
{
|
|
auto cols = xsv.headers();
|
|
auto rows = xsv.size();
|
|
|
|
auto sheet = adopt_ref(*new Sheet(workbook));
|
|
if (xsv.has_explicit_headers()) {
|
|
sheet->m_columns = cols;
|
|
} else {
|
|
sheet->m_columns.ensure_capacity(cols.size());
|
|
for (size_t i = 0; i < cols.size(); ++i)
|
|
sheet->m_columns.append(String::bijective_base_from(i));
|
|
}
|
|
for (size_t i = 0; i < max(rows, Sheet::default_row_count); ++i)
|
|
sheet->add_row();
|
|
if (sheet->columns_are_standard()) {
|
|
for (size_t i = sheet->m_columns.size(); i < Sheet::default_column_count; ++i)
|
|
sheet->add_column();
|
|
}
|
|
|
|
for (auto row : xsv) {
|
|
for (size_t i = 0; i < cols.size(); ++i) {
|
|
auto str = row[i];
|
|
if (str.is_empty())
|
|
continue;
|
|
Position position { i, row.index() };
|
|
auto cell = make<Cell>(str, position, *sheet);
|
|
sheet->m_cells.set(position, move(cell));
|
|
}
|
|
}
|
|
|
|
return sheet;
|
|
}
|
|
|
|
JsonObject Sheet::gather_documentation() const
|
|
{
|
|
JsonObject object;
|
|
const JS::PropertyName doc_name { "__documentation" };
|
|
|
|
auto add_docs_from = [&](auto& it, auto& global_object) {
|
|
auto value = global_object.get(it.key).release_value();
|
|
if (!value.is_function() && !value.is_object())
|
|
return;
|
|
|
|
auto& value_object = value.is_object() ? value.as_object() : value.as_function();
|
|
if (!value_object.has_own_property(doc_name).release_value())
|
|
return;
|
|
|
|
dbgln("Found '{}'", it.key.to_display_string());
|
|
auto doc = value_object.get(doc_name).release_value();
|
|
if (!doc.is_string())
|
|
return;
|
|
|
|
JsonParser parser(doc.to_string_without_side_effects());
|
|
auto doc_object = parser.parse();
|
|
|
|
if (doc_object.has_value())
|
|
object.set(it.key.to_display_string(), doc_object.value());
|
|
else
|
|
dbgln("Sheet::gather_documentation(): Failed to parse the documentation for '{}'!", it.key.to_display_string());
|
|
};
|
|
|
|
for (auto& it : interpreter().global_object().shape().property_table())
|
|
add_docs_from(it, interpreter().global_object());
|
|
|
|
for (auto& it : global_object().shape().property_table())
|
|
add_docs_from(it, global_object());
|
|
|
|
m_cached_documentation = move(object);
|
|
return m_cached_documentation.value();
|
|
}
|
|
|
|
String Sheet::generate_inline_documentation_for(StringView function, size_t argument_index)
|
|
{
|
|
if (!m_cached_documentation.has_value())
|
|
gather_documentation();
|
|
|
|
auto& docs = m_cached_documentation.value();
|
|
auto entry = docs.get(function);
|
|
if (entry.is_null() || !entry.is_object())
|
|
return String::formatted("{}(...???{})", function, argument_index);
|
|
|
|
auto& entry_object = entry.as_object();
|
|
size_t argc = entry_object.get("argc").to_int(0);
|
|
auto argnames_value = entry_object.get("argnames");
|
|
if (!argnames_value.is_array())
|
|
return String::formatted("{}(...{}???{})", function, argc, argument_index);
|
|
auto& argnames = argnames_value.as_array();
|
|
StringBuilder builder;
|
|
builder.appendff("{}(", function);
|
|
for (size_t i = 0; i < (size_t)argnames.size(); ++i) {
|
|
if (i != 0 && i < (size_t)argnames.size())
|
|
builder.append(", ");
|
|
if (i == argument_index)
|
|
builder.append('<');
|
|
else if (i >= argc)
|
|
builder.append('[');
|
|
builder.append(argnames[i].to_string());
|
|
if (i == argument_index)
|
|
builder.append('>');
|
|
else if (i >= argc)
|
|
builder.append(']');
|
|
}
|
|
|
|
builder.append(')');
|
|
return builder.build();
|
|
}
|
|
|
|
String Position::to_cell_identifier(const Sheet& sheet) const
|
|
{
|
|
return String::formatted("{}{}", sheet.column(column), row);
|
|
}
|
|
|
|
URL Position::to_url(const Sheet& sheet) const
|
|
{
|
|
URL url;
|
|
url.set_protocol("spreadsheet");
|
|
url.set_host("cell");
|
|
url.set_paths({ String::number(getpid()) });
|
|
url.set_fragment(to_cell_identifier(sheet));
|
|
return url;
|
|
}
|
|
|
|
}
|