mirror of
https://github.com/HarbourMasters/Shipwright.git
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5dda5762ba
subrepo: subdir: "ZAPDTR" merged: "a53a53ea4" upstream: origin: "https://github.com/HarbourMasters/ZAPDTR.git" branch: "master" commit: "a53a53ea4" git-subrepo: version: "0.4.1" origin: "???" commit: "???"
444 lines
16 KiB
C++
444 lines
16 KiB
C++
/**
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* ZAPD Warning- and Error-handling system
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* =======================================
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*
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* This provides a common standard way to write ZAPD warnings/errors, which should be used for all
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* such. It will pretty-print them in a uniform way, with styles defined in the header.
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*
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* Warnings/errors should be constructed using the macros given in the header; there are now plenty
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* of examples in the codebase of how to do this. Their purposes are noted above each category in
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* the header. Each warning has a type, one of the ones in warningStringToInitMap, or
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* WarningType::Always, which is used for warnings that cannot be disabled and do not display a
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* type.
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*
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* Currently there are three levels of alert a warning can have:
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* - Off (does not display anything)
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* - Warn (print a warning but continue processing)
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* - Err (behave like an error, i.e. print and throw an exception to crash ZAPD when occurs)
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*
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* Flag use:
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* - -Wfoo enables warnings of type foo
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* - -Wno-foo disables warnings of type foo
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* - -Werror=foo escalates foo to behave like an error
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* - -Weverything enables all warnings
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* - -Werror escalates all enabled warnings to errors
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*
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* Errors do not have types, and will always throw an exception; they cannot be disabled.
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*
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* Format
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* ===
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* Each printed warning/error contains the same three sections:
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* - Preamble: automatically generated; the content varies depending on category. It will print the
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* file and function that the warning is from, and information about the files being processed
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* or extracted.
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* - Header: begins with 'warning: ' or 'error:', should contain essential information about the
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* warning/error, ends with the warning type if applicable. Printed with emphasis to make it
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* stand out. Does not start with a capital letter or end with a '.'
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* - Body (optional): indented, should contain further diagnostic information useful for identifying
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* and fixing the warning/error. Can be a sentence with captialisation and '.' on the end.
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*
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* Please think of what the end user will find most useful when writing the header and body, and try
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* to keep it brief without sacrificing important information! Also remember that if the user is
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* only looking at stderr, they will normally have no other context.
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*
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* Warning vs error
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* ===
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* The principle that we have operated on so far is
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* - issue a warning if ZAPD will still be able to produce a valid, compilable C file that will
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* match
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* - if this cannot happen, use an error.
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* but at the end of the day, it is up to the programmer's discretion what it should be possible to
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* disable.
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*
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* Documentation
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* ===
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* Remember that all warnings also need to be documented in the README.md. The help is generated
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* automatically.
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*/
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#include "WarningHandler.h"
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#include <cassert>
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#include "Globals.h"
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#include "Utils/StringHelper.h"
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typedef struct
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{
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WarningType type;
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WarningLevel defaultLevel;
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std::string description;
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} WarningInfoInit;
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typedef struct
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{
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WarningLevel level;
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std::string name;
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std::string description;
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} WarningInfo;
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/**
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* Master list of all default warning types and features
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*
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* To add a warning type, fill in a new row of this map. Think carefully about what its default
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* level should be, and try and make the description both brief and informative: it is used in the
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* help message, so again, think about what the end user needs to know.
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*/
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// clang-format off
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static const std::unordered_map<std::string, WarningInfoInit> warningStringToInitMap = {
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{"deprecated", {WarningType::Deprecated,
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#ifdef DEPRECATION_ON
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WarningLevel::Warn,
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#else
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WarningLevel::Off,
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#endif
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"Deprecated features"}},
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{"unaccounted", {WarningType::Unaccounted, WarningLevel::Off, "Large blocks of unaccounted"}},
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{"missing-offsets", {WarningType::MissingOffsets, WarningLevel::Warn, "Offset attribute missing in XML tag"}},
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{"intersection", {WarningType::Intersection, WarningLevel::Warn, "Two assets intersect"}},
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{"missing-attribute", {WarningType::MissingAttribute, WarningLevel::Warn, "Required attribute missing in XML tag"}},
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{"invalid-attribute-value", {WarningType::InvalidAttributeValue, WarningLevel::Err, "Attribute declared in XML is wrong"}},
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{"unknown-attribute", {WarningType::UnknownAttribute, WarningLevel::Warn, "Unknown attribute in XML entry tag"}},
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{"invalid-xml", {WarningType::InvalidXML, WarningLevel::Err, "XML has syntax errors"}},
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{"invalid-jpeg", {WarningType::InvalidJPEG, WarningLevel::Err, "JPEG file does not conform to the game's format requirements"}},
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{"invalid-png", {WarningType::InvalidPNG, WarningLevel::Err, "Issues arising when processing PNG data"}},
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{"invalid-extracted-data", {WarningType::InvalidExtractedData, WarningLevel::Err, "Extracted data does not have correct form"}},
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{"missing-segment", {WarningType::MissingSegment, WarningLevel::Warn, "Segment not given in File tag in XML"}},
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{"hardcoded-pointer", {WarningType::HardcodedPointer, WarningLevel::Warn, "ZAPD lacks the info to make a symbol, so must output a hardcoded pointer"}},
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{"not-implemented", {WarningType::NotImplemented, WarningLevel::Warn, "ZAPD does not currently support this feature"}},
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};
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/**
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* Map constructed at runtime to contain the warning features as set by the user using -W flags.
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*/
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static std::unordered_map<WarningType, WarningInfo> warningTypeToInfoMap;
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void WarningHandler::ConstructTypeToInfoMap() {
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for (auto& entry : warningStringToInitMap) {
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warningTypeToInfoMap[entry.second.type] = {entry.second.defaultLevel, entry.first, entry.second.description};
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}
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warningTypeToInfoMap[WarningType::Always] = {WarningLevel::Warn, "always", "you shouldn't be reading this"};
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assert(warningTypeToInfoMap.size() == static_cast<size_t>(WarningType::Max));
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}
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/**
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* Initialises the main warning type map and reads flags passed to set each warning type's level.
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*/
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void WarningHandler::Init(int argc, char* argv[]) {
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ConstructTypeToInfoMap();
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bool werror = false;
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for (int i = 1; i < argc; i++) {
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// If it doesn't start with "-W" skip it.
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if (argv[i][0] != '-' || argv[i][1] != 'W' || argv[i][2] == '\0') {
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continue;
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}
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WarningLevel warningTypeOn = WarningLevel::Warn;
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size_t startingIndex = 2;
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// "-Wno-"
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if (argv[i][2] == 'n' && argv[i][3] == 'o' && argv[i][4] == '-' && argv[i][5] != '\0') {
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warningTypeOn = WarningLevel::Off;
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startingIndex = 5;
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}
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// Read starting after the "-W" or "-Wno-"
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std::string_view currentArgv = &argv[i][startingIndex];
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if (currentArgv == "error") {
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werror = warningTypeOn != WarningLevel::Off;
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} else if (currentArgv == "everything") {
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for (auto& it: warningTypeToInfoMap) {
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if (it.second.level <= WarningLevel::Warn) {
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it.second.level = warningTypeOn;
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}
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}
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} else {
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// "-Werror=" / "-Wno-error=" parser
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if (currentArgv.rfind("error=", 0) == 0) {
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// Read starting after the "error=" part
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currentArgv = &argv[i][startingIndex + 6];
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warningTypeOn = warningTypeOn != WarningLevel::Off ? WarningLevel::Err : WarningLevel::Warn;
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}
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auto it = warningStringToInitMap.find(std::string(currentArgv));
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if (it != warningStringToInitMap.end()) {
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warningTypeToInfoMap[it->second.type].level = warningTypeOn;
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}
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else {
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HANDLE_WARNING(WarningType::Always, StringHelper::Sprintf("unknown warning flag '%s'", argv[i]), "");
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}
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}
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}
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if (werror) {
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for (auto& it: warningTypeToInfoMap) {
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if (it.second.level >= WarningLevel::Warn) {
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it.second.level = WarningLevel::Err;
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}
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}
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}
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}
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bool WarningHandler::IsWarningEnabled(WarningType warnType) {
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assert(static_cast<size_t>(warnType) >= 0 && warnType < WarningType::Max);
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return warningTypeToInfoMap.at(warnType).level != WarningLevel::Off;
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}
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bool WarningHandler::WasElevatedToError(WarningType warnType) {
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assert(static_cast<size_t>(warnType) >= 0 && warnType < WarningType::Max);
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if (!IsWarningEnabled(warnType)) {
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return false;
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}
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return warningTypeToInfoMap.at(warnType).level >= WarningLevel::Err;
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}
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/**
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* Print file/line/function info for debugging
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*/
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void WarningHandler::FunctionPreamble(const char* filename, int32_t line, const char* function) {
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if (Globals::Instance->verbosity >= VerbosityLevel::VERBOSITY_DEBUG) {
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fprintf(stderr, "%s:%i: in function %s:\n", filename, line, function);
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}
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}
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/**
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* Print the information about the file(s) being processed (XML for extraction, png etc. for building)
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*/
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void WarningHandler::ProcessedFilePreamble() {
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if (Globals::Instance->inputPath != "") {
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fprintf(stderr, "When processing file %s: ", Globals::Instance->inputPath.c_str());
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}
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}
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/**
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* Print information about the binary file being extracted
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*/
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void WarningHandler::ExtractedFilePreamble(const ZFile *parent, const ZResource* res, const uint32_t offset) {
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fprintf(stderr, "in input binary file %s, ", parent->GetName().c_str());
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if (res != nullptr) {
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fprintf(stderr, "resource '%s' at ", res->GetName().c_str());
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}
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fprintf(stderr, "offset 0x%06X: \n\t", offset);
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}
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/**
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* Construct the rest of the message, after warning:/error. The message is filled in one character at a time, with indents added after newlines
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*/
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std::string WarningHandler::ConstructMessage(std::string message, const std::string& header, const std::string& body) {
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message.reserve(message.size() + header.size() + body.size() + 10 * (sizeof(HANG_INDT) - 1));
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message += StringHelper::Sprintf(HILITE("%s"), header.c_str());
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message += "\n";
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if (body == "") {
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return message;
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}
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message += HANG_INDT;
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for (const char* ptr = body.c_str(); *ptr != '\0'; ptr++) {
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message += *ptr;
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if (*ptr == '\n') {
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message += HANG_INDT;
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}
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}
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message += "\n";
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return message;
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}
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/* Error module functions */
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void WarningHandler::PrintErrorAndThrow(const std::string& header, const std::string& body) {
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std::string errorMsg = ERR_FMT("error: ");
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throw std::runtime_error(ConstructMessage(errorMsg, header, body));
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}
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/* Error types, to be used via the macros */
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void WarningHandler::ErrorType(WarningType warnType, const std::string& header, const std::string& body) {
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std::string headerMsg = header;
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for (const auto& iter: warningStringToInitMap) {
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if (iter.second.type == warnType) {
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headerMsg += StringHelper::Sprintf(" [%s]", iter.first.c_str());
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}
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}
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PrintErrorAndThrow(headerMsg, body);
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}
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void WarningHandler::Error_Plain(const char* filename, int32_t line, const char* function, WarningType warnType, const std::string& header, const std::string& body) {
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FunctionPreamble(filename, line, function);
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ErrorType(warnType, header, body);
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}
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void WarningHandler::Error_Process(const char* filename, int32_t line, const char* function, WarningType warnType, const std::string& header, const std::string& body) {
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FunctionPreamble(filename, line, function);
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ProcessedFilePreamble();
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ErrorType(warnType, header, body);
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}
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void WarningHandler::Error_Resource(const char* filename, int32_t line, const char* function, WarningType warnType, const ZFile *parent, const ZResource* res, const uint32_t offset, const std::string& header, const std::string& body) {
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assert(parent != nullptr);
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FunctionPreamble(filename, line, function);
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ProcessedFilePreamble();
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ExtractedFilePreamble(parent, res, offset);
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ErrorType(warnType, header, body);
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}
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/* Warning module functions */
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void WarningHandler::PrintWarningBody(const std::string& header, const std::string& body) {
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std::string errorMsg = WARN_FMT("warning: ");
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fprintf(stderr, "%s", ConstructMessage(errorMsg, header, body).c_str());
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}
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void WarningHandler::WarningTypeAndChooseEscalate(WarningType warnType, const std::string& header, const std::string& body) {
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std::string headerMsg = header;
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for (const auto& iter: warningStringToInitMap) {
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if (iter.second.type == warnType) {
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headerMsg += StringHelper::Sprintf(" [-W%s]", iter.first.c_str());
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}
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}
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if (WasElevatedToError(warnType)) {
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PrintErrorAndThrow(headerMsg, body);
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} else {
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PrintWarningBody(headerMsg, body);
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}
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}
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/* Warning types, to be used via the macros */
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void WarningHandler::Warning_Plain(const char* filename, int32_t line, const char* function, WarningType warnType, const std::string& header, const std::string& body) {
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if (!IsWarningEnabled(warnType)) {
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return;
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}
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FunctionPreamble(filename, line, function);
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WarningTypeAndChooseEscalate(warnType, header, body);
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}
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void WarningHandler::Warning_Process(const char* filename, int32_t line, const char* function, WarningType warnType, const std::string& header, const std::string& body) {
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if (!IsWarningEnabled(warnType)) {
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return;
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}
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FunctionPreamble(filename, line, function);
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ProcessedFilePreamble();
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WarningTypeAndChooseEscalate(warnType, header, body);
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}
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void WarningHandler::Warning_Resource(const char* filename, int32_t line, const char* function, WarningType warnType, const ZFile *parent, const ZResource* res, const uint32_t offset, const std::string& header, const std::string& body) {
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assert(parent != nullptr);
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if (!IsWarningEnabled(warnType)) {
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return;
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}
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FunctionPreamble(filename, line, function);
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ProcessedFilePreamble();
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ExtractedFilePreamble(parent, res, offset);
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WarningTypeAndChooseEscalate(warnType, header, body);
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}
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/* Help-related functions */
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#include <set>
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/**
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* Print each warning name, default status, and description using the init map
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*/
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void WarningHandler::PrintHelp() {
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std::set<std::string> sortedKeys;
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WarningInfoInit warningInfo;
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uint32_t columnWidth = 25;
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std::string dt;
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// Sort keys through the magic of `set`, to print in alphabetical order
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for (auto& it : warningStringToInitMap) {
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sortedKeys.insert(it.first);
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}
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printf("\nWarning types ( * means enabled by default)\n");
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for (auto& key : sortedKeys) {
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warningInfo = warningStringToInitMap.at(key);
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if (warningInfo.defaultLevel <= WarningLevel::Warn) {
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dt = "-W";
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dt += key;
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if (warningInfo.defaultLevel == WarningLevel::Warn) {
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dt += " *";
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}
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printf(HELP_DT_INDT "%-*s", columnWidth, dt.c_str());
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if (dt.length() + 2 > columnWidth) {
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printf("\n" HELP_DT_INDT "%-*s", columnWidth, "");
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}
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printf("%s\n", warningInfo.description.c_str());
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}
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}
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printf("\nDefault errors\n");
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for (auto& key : sortedKeys) {
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if (warningInfo.defaultLevel > WarningLevel::Warn) {
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dt = "-W";
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dt += key;
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printf(HELP_DT_INDT "%-*s", columnWidth, dt.c_str());
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if (dt.length() + 2 > columnWidth) {
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printf("\n" HELP_DT_INDT "%*s", columnWidth, "");
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}
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printf("%s\n", warningInfo.description.c_str());
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}
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}
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printf("\n");
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printf("Other\n" HELP_DT_INDT "-Weverything will enable all existing warnings.\n" HELP_DT_INDT "-Werror will promote all warnings to errors.\n");
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printf("\n");
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printf("Warnings can be disabled using -Wno-... instead of -W...; -Weverything will override any -Wno-... flags passed before it.\n");
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}
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/**
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* Print which warnings are currently enabled
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*/
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void WarningHandler::PrintWarningsDebugInfo()
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{
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std::string dt;
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printf("Warnings status:\n");
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for (auto& it: warningTypeToInfoMap) {
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dt = it.second.name;
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dt += ": ";
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printf(HELP_DT_INDT "%-25s", dt.c_str());
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switch (it.second.level)
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{
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case WarningLevel::Off:
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printf(VT_FGCOL(LIGHTGRAY) "Off" VT_RST);
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break;
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case WarningLevel::Warn:
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printf(VT_FGCOL(YELLOW) "Warn" VT_RST);
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break;
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case WarningLevel::Err:
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printf(VT_FGCOL(RED) "Err" VT_RST);
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break;
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}
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printf("\n");
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}
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printf("\n");
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}
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