wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-28 17:51:15 +02:00
Code Activity

Introduce AbstractPos

Browse source 
This makes the position object used in exceptions abstract, with a
method getSource() to get the source code of the file in which the
error originated. This is needed for lazy trees because source files
don't necessarily exist in the filesystem, and we don't want to make
libutil depend on the InputAccessor type in libfetcher.
This commit is contained in:
Eelco Dolstra 2022-12-13 00:48:04 +01:00
parent edb54c62e6
commit b3fdab28a2
16 changed files with 231 additions and 279 deletions
Download patch file Download diff file Expand all files Collapse all files

39
src/libexpr/parser.y
View file

@ -34,11 +34,6 @@ namespace nix {
Path basePath;
PosTable::Origin origin;
std::optional<ErrorInfo> error;
ParseData(EvalState & state, PosTable::Origin origin)
: state(state)
, symbols(state.symbols)
, origin(std::move(origin))
{ };
};
struct ParserFormals {
@ -649,24 +644,20 @@ formal
namespace nix {
Expr * EvalState::parse(char * text, size_t length, FileOrigin origin,
const PathView path, const PathView basePath, std::shared_ptr<StaticEnv> & staticEnv)
Expr * EvalState::parse(
char * text,
size_t length,
Pos::Origin origin,
Path basePath,
std::shared_ptr<StaticEnv> & staticEnv)
{
yyscan_t scanner;
std::string file;
switch (origin) {
case foFile:
file = path;
break;
case foStdin:
case foString:
file = text;
break;
default:
assert(false);
}
ParseData data(*this, {file, origin});
data.basePath = basePath;
ParseData data {
.state = *this,
.symbols = symbols,
.basePath = std::move(basePath),
.origin = {origin},
};
yylex_init(&scanner);
yy_scan_buffer(text, length, scanner);
@ -718,14 +709,14 @@ Expr * EvalState::parseExprFromFile(const Path & path, std::shared_ptr<StaticEnv
auto buffer = readFile(path);
// readFile should have left some extra space for terminators
buffer.append("\0\0", 2);
return parse(buffer.data(), buffer.size(), foFile, path, dirOf(path), staticEnv);
return parse(buffer.data(), buffer.size(), path, dirOf(path), staticEnv);
}
Expr * EvalState::parseExprFromString(std::string s, const Path & basePath, std::shared_ptr<StaticEnv> & staticEnv)
{
s.append("\0\0", 2);
return parse(s.data(), s.size(), foString, "", basePath, staticEnv);
return parse(s.data(), s.size(), Pos::string_tag(), basePath, staticEnv);
}
@ -741,7 +732,7 @@ Expr * EvalState::parseStdin()
auto buffer = drainFD(0);
// drainFD should have left some extra space for terminators
buffer.append("\0\0", 2);
return parse(buffer.data(), buffer.size(), foStdin, "", absPath("."), staticBaseEnv);
return parse(buffer.data(), buffer.size(), Pos::stdin_tag(), absPath("."), staticBaseEnv);
}