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/*
* Copyright (c) 2020, Hunter Salyer <thefalsehonesty@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/HashTable.h>
#include <AK/StringBuilder.h>
#include <AK/TypeCasts.h>
#include <LibJS/Lexer.h>
#include <LibJS/MarkupGenerator.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/Date.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/VM.h>
namespace JS {
String MarkupGenerator::html_from_source(StringView source)
{
StringBuilder builder;
auto lexer = Lexer(source);
for (auto token = lexer.next(); token.type() != TokenType::Eof; token = lexer.next()) {
builder.append(token.trivia());
builder.append(wrap_string_in_style(token.value(), style_type_for_token(token)));
}
return builder.to_string();
}
String MarkupGenerator::html_from_value(Value value)
{
StringBuilder output_html;
value_to_html(value, output_html);
return output_html.to_string();
}
String MarkupGenerator::html_from_error(Object& object)
{
StringBuilder output_html;
HashTable<Object*> seen_objects;
error_to_html(object, output_html, seen_objects);
return output_html.to_string();
}
void MarkupGenerator::value_to_html(Value value, StringBuilder& output_html, HashTable<Object*> seen_objects)
{
if (value.is_empty()) {
output_html.append("<empty>");
return;
}
if (value.is_object()) {
if (seen_objects.contains(&value.as_object())) {
// FIXME: Maybe we should only do this for circular references,
// not for all reoccurring objects.
output_html.appendff("<already printed Object {:p}>", &value.as_object());
return;
}
seen_objects.set(&value.as_object());
}
if (value.is_object()) {
auto& object = value.as_object();
if (is<Array>(object))
return array_to_html(static_cast<const Array&>(object), output_html, seen_objects);
output_html.append(wrap_string_in_style(object.class_name(), StyleType::ObjectType));
if (object.is_function())
return function_to_html(object, output_html, seen_objects);
if (is<Date>(object))
return date_to_html(object, output_html, seen_objects);
if (is<Error>(object))
return error_to_html(object, output_html, seen_objects);
return object_to_html(object, output_html, seen_objects);
}
if (value.is_string())
output_html.append(open_style_type(StyleType::String));
else if (value.is_number())
output_html.append(open_style_type(StyleType::Number));
else if (value.is_boolean() || value.is_nullish())
output_html.append(open_style_type(StyleType::KeywordBold));
if (value.is_string())
output_html.append('"');
output_html.append(escape_html_entities(value.to_string_without_side_effects()));
if (value.is_string())
output_html.append('"');
output_html.append("</span>");
}
void MarkupGenerator::array_to_html(const Array& array, StringBuilder& html_output, HashTable<Object*>& seen_objects)
{
html_output.append(wrap_string_in_style("[ ", StyleType::Punctuation));
bool first = true;
for (auto it = array.indexed_properties().begin(false); it != array.indexed_properties().end(); ++it) {
if (!first)
html_output.append(wrap_string_in_style(", ", StyleType::Punctuation));
first = false;
// FIXME: Exception check
value_to_html(array.get(it.index()).release_value(), html_output, seen_objects);
}
html_output.append(wrap_string_in_style(" ]", StyleType::Punctuation));
}
void MarkupGenerator::object_to_html(const Object& object, StringBuilder& html_output, HashTable<Object*>& seen_objects)
{
html_output.append(wrap_string_in_style("{ ", StyleType::Punctuation));
bool first = true;
for (auto& entry : object.indexed_properties()) {
if (!first)
html_output.append(wrap_string_in_style(", ", StyleType::Punctuation));
first = false;
html_output.append(wrap_string_in_style(String::number(entry.index()), StyleType::Number));
html_output.append(wrap_string_in_style(": ", StyleType::Punctuation));
// FIXME: Exception check
value_to_html(object.get(entry.index()).release_value(), html_output, seen_objects);
}
if (!object.indexed_properties().is_empty() && object.shape().property_count())
html_output.append(wrap_string_in_style(", ", StyleType::Punctuation));
size_t index = 0;
for (auto& it : object.shape().property_table_ordered()) {
html_output.append(wrap_string_in_style(String::formatted("\"{}\"", escape_html_entities(it.key.to_display_string())), StyleType::String));
html_output.append(wrap_string_in_style(": ", StyleType::Punctuation));
value_to_html(object.get_direct(it.value.offset), html_output, seen_objects);
if (index != object.shape().property_count() - 1)
html_output.append(wrap_string_in_style(", ", StyleType::Punctuation));
++index;
}
html_output.append(wrap_string_in_style(" }", StyleType::Punctuation));
}
void MarkupGenerator::function_to_html(const Object& function, StringBuilder& html_output, HashTable<Object*>&)
{
html_output.appendff("[{}]", function.class_name());
}
void MarkupGenerator::date_to_html(const Object& date, StringBuilder& html_output, HashTable<Object*>&)
{
html_output.appendff("Date {}", static_cast<const JS::Date&>(date).string());
}
void MarkupGenerator::error_to_html(const Object& object, StringBuilder& html_output, HashTable<Object*>&)
{
auto& vm = object.vm();
auto name = object.get_without_side_effects(vm.names.name).value_or(JS::js_undefined());
auto message = object.get_without_side_effects(vm.names.message).value_or(JS::js_undefined());
if (name.is_accessor() || message.is_accessor()) {
html_output.append(wrap_string_in_style(JS::Value(&object).to_string_without_side_effects(), StyleType::Invalid));
} else {
auto name_string = name.to_string_without_side_effects();
auto message_string = message.to_string_without_side_effects();
html_output.append(wrap_string_in_style(String::formatted("[{}]", name_string), StyleType::Invalid));
if (!message_string.is_empty())
html_output.appendff(": {}", escape_html_entities(message_string));
}
}
String MarkupGenerator::style_from_style_type(StyleType type)
{
switch (type) {
case StyleType::Invalid:
return "color: red;";
case StyleType::String:
return "color: -libweb-palette-syntax-string;";
case StyleType::Number:
return "color: -libweb-palette-syntax-number;";
case StyleType::KeywordBold:
return "color: -libweb-palette-syntax-keyword; font-weight: bold;";
case StyleType::Punctuation:
return "color: -libweb-palette-syntax-punctuation;";
case StyleType::Operator:
return "color: -libweb-palette-syntax-operator;";
case StyleType::Keyword:
return "color: -libweb-palette-syntax-keyword;";
case StyleType::ControlKeyword:
return "color: -libweb-palette-syntax-control-keyword;";
case StyleType::Identifier:
return "color: -libweb-palette-syntax-identifier;";
case StyleType::ObjectType:
return "padding: 2px; background-color: #ddf; color: black; font-weight: bold;";
default:
VERIFY_NOT_REACHED();
}
}
MarkupGenerator::StyleType MarkupGenerator::style_type_for_token(Token token)
{
switch (token.category()) {
case TokenCategory::Invalid:
return StyleType::Invalid;
case TokenCategory::Number:
return StyleType::Number;
case TokenCategory::String:
return StyleType::String;
case TokenCategory::Punctuation:
return StyleType::Punctuation;
case TokenCategory::Operator:
return StyleType::Operator;
case TokenCategory::Keyword:
switch (token.type()) {
case TokenType::BoolLiteral:
case TokenType::NullLiteral:
return StyleType::KeywordBold;
default:
return StyleType::Keyword;
}
case TokenCategory::ControlKeyword:
return StyleType::ControlKeyword;
case TokenCategory::Identifier:
return StyleType::Identifier;
default:
dbgln("Unknown style type for token {}", token.name());
VERIFY_NOT_REACHED();
}
}
String MarkupGenerator::open_style_type(StyleType type)
{
return String::formatted("<span style=\"{}\">", style_from_style_type(type));
}
String MarkupGenerator::wrap_string_in_style(String source, StyleType type)
{
return String::formatted("<span style=\"{}\">{}</span>", style_from_style_type(type), escape_html_entities(source));
}
}
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