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Merge pull request #9634 from 9999years/combine-abstract-pos-and-pos

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Combine `AbstractPos`, `PosAdapter`, and `Pos`

(cherry picked from commit 113499d16fc87d53b73fb62fe6242154909756ed)

===

this is a bit cursed because originally it was based on InputAccessor
code that we don't have and moved/patched features we likewise don't
have (fetchToStore caching, all the individual accessors,
ContentAddressMethod). the commit is adjusted accordingly to
match (remove caching, ignore accessors, use FileIngestionMethod).

note that `state.rootPath . CanonPath == abs` and
computeStorePathForPath works relative to cwd, so the slight rewrite in
the moved fetchToStore is legal.

Change-Id: I05fd340c273f0bcc8ffabfebdc4a88b98083bce5
This commit is contained in:
eldritch horrors
2024-03-05 23:46:18 -07:00
parent e9b5929b22
commit 89e99d94e4
24 changed files with 311 additions and 241 deletions
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src/libutil/error.hh
+6 -36
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@@ -63,45 +63,15 @@ struct LinesOfCode {
std::optional<std::string> nextLineOfCode;
};
/**
* An abstract type that represents a location in a source file.
*/
struct AbstractPos
{
uint32_t line = 0;
uint32_t column = 0;
/**
* An AbstractPos may be a "null object", representing an unknown position.
*
* Return true if this position is known.
*/
inline operator bool() const { return line != 0; };
/**
* Return the contents of the source file.
*/
virtual std::optional<std::string> getSource() const
{ return std::nullopt; };
virtual void print(std::ostream & out) const = 0;
std::optional<LinesOfCode> getCodeLines() const;
virtual ~AbstractPos() = default;
inline auto operator<=>(const AbstractPos& rhs) const = default;
};
std::ostream & operator << (std::ostream & str, const AbstractPos & pos);
struct Pos;
void printCodeLines(std::ostream & out,
const std::string & prefix,
const AbstractPos & errPos,
const Pos & errPos,
const LinesOfCode & loc);
struct Trace {
std::shared_ptr<AbstractPos> pos;
std::shared_ptr<Pos> pos;
hintformat hint;
bool frame;
};
@@ -114,7 +84,7 @@ inline bool operator>=(const Trace& lhs, const Trace& rhs);
struct ErrorInfo {
Verbosity level;
hintformat msg;
std::shared_ptr<AbstractPos> errPos;
std::shared_ptr<Pos> errPos;
std::list<Trace> traces;
Suggestions suggestions;
@@ -185,12 +155,12 @@ public:
}
template<typename... Args>
void addTrace(std::shared_ptr<AbstractPos> && e, std::string_view fs, const Args & ... args)
void addTrace(std::shared_ptr<Pos> && e, std::string_view fs, const Args & ... args)
{
addTrace(std::move(e), hintfmt(std::string(fs), args...));
}
void addTrace(std::shared_ptr<AbstractPos> && e, hintformat hint, bool frame = false);
void addTrace(std::shared_ptr<Pos> && e, hintformat hint, bool frame = false);
bool hasTrace() const { return !err.traces.empty(); }