mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-22 22:16:16 +02:00
constructor style basically working
This commit is contained in:
Ben Burdette
parent
2248cc6716
commit
ec449c8450
3 changed files with 222 additions and 180 deletions
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@ -22,21 +22,25 @@ int main()
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// created.
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// ProgramError takes name, description, and an optional hint.
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printErrorInfo( ProgramError()
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.name("name")
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.description("error description")
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.nohint()
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);
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printErrorInfo(
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ErrorInfo::ProgramError("name",
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"error description",
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std::nullopt));
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// ProgramWarning takes name, description, and an optional hint.
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// The hint is in the form of a hintfmt class, which wraps boost::format(),
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// and makes all the substituted text yellow.
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printErrorInfo( ProgramWarning()
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.name("warning name")
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.description("warning description")
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// the templated value, 'warning', is automatically colored yellow.
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.hint(hintfmt("there was a %1%", "warning"))
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);
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printErrorInfo(
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ErrorInfo::ProgramWarning("name",
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"warning description",
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std::optional(hintfmt("there was a %1%", "warning"))));
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// printErrorInfo( ProgramWarning()
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// .name("warning name")
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// .description("warning description")
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// // the templated value, 'warning', is automatically colored yellow.
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// .hint(hintfmt("there was a %1%", "warning"))
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// );
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/*
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// some invalid errors:
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@ -63,25 +67,34 @@ int main()
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SymbolTable testTable;
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auto problem_symbol = testTable.create("problem");
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printErrorInfo(NixLangWarning()
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.name("warning name")
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.description("warning description")
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.pos(Pos(problem_symbol, 40, 13))
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.linesOfCode(std::nullopt,
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"this is the problem line of code",
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std::nullopt)
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.hint(hintfmt("this hint has %1% templated %2%!!", "yellow" , "values")));
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printErrorInfo(ErrorInfo::NixLangWarning(
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"warning name",
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"warning description",
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Pos(problem_symbol, 40, 13),
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std::nullopt,
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"this is the problem line of code",
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std::nullopt,
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hintfmt("this hint has %1% templated %2%!!", "yellow", "values")));
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// // NixLangError is just the same as NixLangWarning, except for the Error
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// // flag.
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// printErrorInfo(NixLangError()
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// .name("error name")
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// .description("error description")
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// .pos(Pos(problem_symbol, 40, 13))
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// .linesOfCode(std::optional("previous line of code"),
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// "this is the problem line of code",
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// std::optional("next line of code"))
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// .hint(hintfmt("this hint has %1% templated %2%!!", "yellow", "values")));
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printErrorInfo(ErrorInfo::NixLangError(
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"error name",
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"error description",
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Pos(problem_symbol, 40, 13),
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std::optional("previous line of code"),
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"this is the problem line of code",
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std::optional("next line of code"),
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hintfmt("this hint has %1% templated %2%!!", "yellow", "values")));
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// NixLangError is just the same as NixLangWarning, except for the Error
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// flag.
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printErrorInfo(NixLangError()
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.name("error name")
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.description("error description")
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.pos(Pos(problem_symbol, 40, 13))
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.linesOfCode(std::optional("previous line of code"),
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"this is the problem line of code",
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std::optional("next line of code"))
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.hint(hintfmt("this hint has %1% templated %2%!!", "yellow", "values")));
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return 0;
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}
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@ -8,7 +8,43 @@ namespace nix
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std::optional<string> ErrorInfo::programName = std::nullopt;
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string showErrLine(ErrLine &errLine)
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ErrorInfo ErrorInfo::ProgramError(const string &name,
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const string &description,
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const std::optional<hintformat> &hf)
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{
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return ProgramEI(elError, name, description, hf);
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}
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ErrorInfo ErrorInfo::ProgramWarning(const string &name,
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const string &description,
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const std::optional<hintformat> &hf)
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{
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return ProgramEI(elWarning, name, description, hf);
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}
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ErrorInfo ErrorInfo::ProgramEI(ErrLevel level,
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const string &name,
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const string &description,
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const std::optional<hintformat> &hf)
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{
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ErrorInfo ei(elError);
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ei.name = name;
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ei.description = description;
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if (hf.has_value())
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ei.hint = std::optional<string>(hf->str());
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else
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ei.hint = std::nullopt;
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return ei;
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}
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string showErrLine(const ErrLine &errLine)
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{
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if (errLine.columnRange.has_value()) {
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return (format("(%1%:%2%)") % errLine.lineNumber % errLine.columnRange->start).str();
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@ -17,7 +53,7 @@ string showErrLine(ErrLine &errLine)
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};
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}
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void printCodeLines(string &prefix, NixCode &nixCode)
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void printCodeLines(const string &prefix, const NixCode &nixCode)
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{
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if (nixCode.errLine.has_value()) {
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@ -69,7 +105,7 @@ void printCodeLines(string &prefix, NixCode &nixCode)
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}
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void printErrorInfo(ErrorInfo &einfo)
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void printErrorInfo(const ErrorInfo &einfo)
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{
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int errwidth = 80;
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string prefix = " ";
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@ -41,153 +41,8 @@ class NixCode
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public:
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std::optional<string> nixFile;
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std::optional<ErrLine> errLine;
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ErrLine& ensureErrLine()
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{
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if (!this->errLine.has_value())
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this->errLine = std::optional(ErrLine());
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return *this->errLine;
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}
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};
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// -------------------------------------------------
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// ErrorInfo.
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// Forward friend class declarations. "builder classes"
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template <class T>
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class AddName;
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template <class T>
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class AddDescription;
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template <class T>
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class AddPos;
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template <class T>
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class AddLOC;
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// The error info class itself.
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class ErrorInfo
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{
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public:
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ErrLevel level;
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string name;
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string description;
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std::optional<NixCode> nixCode;
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std::optional<string> hint;
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ErrorInfo& GetEI()
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{
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return *this;
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}
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static std::optional<string> programName;
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// give these access to the private constructor,
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// when they are direct descendants (children but not grandchildren).
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friend AddName<ErrorInfo>;
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friend AddDescription<ErrorInfo>;
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friend AddPos<ErrorInfo>;
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friend AddLOC<ErrorInfo>;
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NixCode& ensureNixCode()
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{
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if (!this->nixCode.has_value())
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this->nixCode = std::optional(NixCode());
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return *this->nixCode;
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}
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protected:
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// constructor is protected, so only the builder classes can create an ErrorInfo.
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ErrorInfo(ErrLevel level)
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{
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this->level = level;
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}
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};
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// Init as error
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class EIError : public ErrorInfo
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{
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protected:
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EIError() : ErrorInfo(elError) {}
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};
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// Init as warning
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class EIWarning : public ErrorInfo
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{
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protected:
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EIWarning() : ErrorInfo(elWarning) {}
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};
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// Builder class definitions.
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template <class T>
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class AddName : private T
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{
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public:
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T& name(const std::string &name)
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{
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GetEI().name = name;
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return *this;
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}
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protected:
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ErrorInfo& GetEI()
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{
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return T::GetEI();
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}
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};
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template <class T>
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class AddDescription : private T
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{
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public:
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T& description(const std::string &description)
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{
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GetEI().description = description;
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return *this;
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}
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protected:
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ErrorInfo& GetEI()
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{
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return T::GetEI();
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}
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};
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template <class T>
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class AddPos : private T
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{
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public:
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template <class P>
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T& pos(const P &aPos)
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{
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GetEI().ensureNixCode().nixFile = aPos.file;
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GetEI().ensureNixCode().ensureErrLine().lineNumber = aPos.line;
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GetEI().ensureNixCode().ensureErrLine().columnRange = { .start = aPos.column, .len = 1 };
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return *this;
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}
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protected:
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ErrorInfo& GetEI()
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{
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return T::GetEI();
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}
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};
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template <class T>
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class AddLOC : private T
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{
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public:
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T& linesOfCode(std::optional<string> prevloc, string loc, std::optional<string> nextloc)
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{
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GetEI().ensureNixCode().ensureErrLine().prevLineOfCode = prevloc;
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GetEI().ensureNixCode().ensureErrLine().errLineOfCode = loc;
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GetEI().ensureNixCode().ensureErrLine().nextLineOfCode = nextloc;
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return *this;
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}
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protected:
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ErrorInfo& GetEI()
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{
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return T::GetEI();
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}
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};
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// ----------------------------------------------------------------
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// format for hints. same as fmt, except templated values
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// are always in yellow.
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@ -229,7 +84,6 @@ public:
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friend class AddHint;
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private:
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format fmt;
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};
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template<typename... Args>
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@ -240,6 +94,143 @@ inline hintformat hintfmt(const std::string & fs, const Args & ... args)
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return f;
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}
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// -------------------------------------------------
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// ErrorInfo.
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class ErrorInfo
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{
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public:
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ErrLevel level;
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string name;
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string description;
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std::optional<NixCode> nixCode;
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std::optional<string> hint;
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static std::optional<string> programName;
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static ErrorInfo ProgramError(const string &name,
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const string &description,
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const std::optional<hintformat> &hf);
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static ErrorInfo ProgramWarning(const string &name,
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const string &description,
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const std::optional<hintformat> &hf);
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template <class P>
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static ErrorInfo NixLangError(const string &name,
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const string &description,
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const P &pos,
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std::optional<string> prevloc,
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string loc,
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std::optional<string> nextloc,
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const std::optional<hintformat> &hf)
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{
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return NixLangEI(elError, name, description, pos, prevloc, loc, nextloc, hf);
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}
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template <class P>
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static ErrorInfo NixLangWarning(const string &name,
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const string &description,
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const P &pos,
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std::optional<string> prevloc,
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string loc,
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std::optional<string> nextloc,
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const std::optional<hintformat> &hf)
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{
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return NixLangEI(elWarning, name, description, pos, prevloc, loc, nextloc, hf);
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}
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private:
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template <class P>
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static ErrorInfo NixLangEI(ErrLevel level,
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const string &name,
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const string &description,
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const P &pos,
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std::optional<string> prevloc,
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string loc,
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std::optional<string> nextloc,
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const std::optional<hintformat> &hf)
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{
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ErrorInfo ei(level);
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ei.name = name;
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ei.description = description;
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if (hf.has_value())
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ei.hint = std::optional<string>(hf->str());
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else
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ei.hint = std::nullopt;
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ErrLine errline;
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errline.lineNumber = pos.line;
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errline.columnRange = { .start = pos.column, .len = 1 };
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errline.prevLineOfCode = prevloc;
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errline.errLineOfCode = loc;
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errline.nextLineOfCode = nextloc;
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NixCode nixcode;
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nixcode.nixFile = pos.file;
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nixcode.errLine = std::optional(errline);
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ei.nixCode = std::optional(nixcode);
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return ei;
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}
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static ErrorInfo ProgramEI(ErrLevel level,
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const string &name,
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const string &description,
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const std::optional<hintformat> &hf);
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// constructor is protected, so only the builder classes can create an ErrorInfo.
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ErrorInfo(ErrLevel level)
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{
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this->level = level;
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}
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};
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/*
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template <class T>
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class AddPos : private T
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{
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public:
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template <class P>
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T& pos(const P &aPos)
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{
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GetEI().ensureNixCode().nixFile = aPos.file;
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GetEI().ensureNixCode().ensureErrLine().lineNumber = aPos.line;
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GetEI().ensureNixCode().ensureErrLine().columnRange = { .start = aPos.column, .len = 1 };
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return *this;
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}
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protected:
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ErrorInfo& GetEI()
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{
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return T::GetEI();
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}
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};
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template <class T>
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class AddLOC : private T
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{
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public:
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T& linesOfCode(std::optional<string> prevloc, string loc, std::optional<string> nextloc)
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{
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GetEI().ensureNixCode().ensureErrLine().prevLineOfCode = prevloc;
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GetEI().ensureNixCode().ensureErrLine().errLineOfCode = loc;
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GetEI().ensureNixCode().ensureErrLine().nextLineOfCode = nextloc;
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return *this;
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}
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protected:
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ErrorInfo& GetEI()
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{
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return T::GetEI();
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}
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};
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*/
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/*
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// the template layer for adding a hint.
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template <class T>
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class AddHint : private T
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@ -261,11 +252,12 @@ protected:
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return T::GetEI();
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}
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};
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*/
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// --------------------------------------------------------
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// error types
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typedef AddName<
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/*typedef AddName<
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AddDescription<
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AddHint<
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EIError>>> ProgramError;
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@ -290,11 +282,12 @@ typedef AddName<
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EIWarning>>>>> NixLangWarning;
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*/
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// --------------------------------------------------------
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// error printing
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// just to cout for now.
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void printErrorInfo(ErrorInfo &einfo);
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void printErrorInfo(const ErrorInfo &einfo);
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}
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