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LibPDF: Add new error construction functions

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These should make it easier to create specific errors, specially when
wanting to create a formatted message.
This commit is contained in:
Rodrigo Tobar 2023-01-31 23:36:35 +08:00 • committed by Linus Groh
parent db9fa7ff07
commit e8f1a2ef02
1 changed files with 30 additions and 0 deletions
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30
Userland/Libraries/LibPDF/Error.h
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@ -7,6 +7,7 @@
#pragma once #pragma once
#include <AK/DeprecatedString.h> #include <AK/DeprecatedString.h>
#include <AK/String.h>
#include <AK/Vector.h> #include <AK/Vector.h>
namespace PDF { namespace PDF {
@ -27,6 +28,11 @@ public:
} }
Error(Type type, DeprecatedString const& message) Error(Type type, DeprecatedString const& message)
: Error(type, String::from_deprecated_string(message).release_value_but_fixme_should_propagate_errors())
{
}
Error(Type type, String const& message)
: m_type(type) : m_type(type)
{ {
switch (type) { switch (type) {
@ -48,9 +54,33 @@ public:
Type type() const { return m_type; } Type type() const { return m_type; }
DeprecatedString const& message() const { return m_message; } DeprecatedString const& message() const { return m_message; }
#define DEFINE_STATIC_ERROR_FUNCTIONS(name, type) \
static Error name##_error(StringView message) \
{ \
return maybe_with_string(Type::type, String::from_utf8(message)); \
} \
\
template<typename... Parameters> \
static Error name##_error(CheckedFormatString<Parameters...>&& fmtstr, Parameters const&... parameters) \
{ \
return maybe_with_string(Type::type, String::formatted(move(fmtstr), parameters...)); \
}
DEFINE_STATIC_ERROR_FUNCTIONS(parse, Parse)
DEFINE_STATIC_ERROR_FUNCTIONS(internal, Internal)
DEFINE_STATIC_ERROR_FUNCTIONS(malformed, MalformedPDF)
DEFINE_STATIC_ERROR_FUNCTIONS(rendering_unsupported, RenderingUnsupported)
private: private:
Type m_type; Type m_type;
DeprecatedString m_message; DeprecatedString m_message;
static Error maybe_with_string(Type type, ErrorOr<String> maybe_string)
{
if (maybe_string.is_error())
return Error { type, String {} };
return Error { type, maybe_string.release_value() };
}
}; };
class Errors { class Errors {