diff options
| author | Yingchi Long <i@lyc.dev> | 2023-06-22 12:27:19 +0800 |
|---|---|---|
| committer | Yingchi Long <i@lyc.dev> | 2023-06-22 18:28:30 +0800 |
| commit | 1400fde144e1fdde2647fda5a7f9511f25572a35 (patch) | |
| tree | 7434b98bc6296d1e4d7528a9925b69a9dbf7d59e /src/libexpr/eval.cc | |
| parent | c48277c1c15f0b6be6a47271a6f8399fad96f7fd (diff) | |
libexpr: extend `Value::print` to allow limited depth
Diffstat (limited to 'src/libexpr/eval.cc')
| -rw-r--r-- | src/libexpr/eval.cc | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc index 71fd6e6e4..da55d3f9e 100644 --- a/src/libexpr/eval.cc +++ b/src/libexpr/eval.cc @@ -95,11 +95,16 @@ RootValue allocRootValue(Value * v) #endif } -void Value::print(const SymbolTable & symbols, std::ostream & str, - std::set<const void *> * seen) const +void Value::print(const SymbolTable &symbols, std::ostream &str, + std::set<const void *> *seen, int depth) const + { checkInterrupt(); + if (depth <= 0) { + str << "«too deep»"; + return; + } switch (internalType) { case tInt: str << integer; @@ -123,7 +128,7 @@ void Value::print(const SymbolTable & symbols, std::ostream & str, str << "{ "; for (auto & i : attrs->lexicographicOrder(symbols)) { str << symbols[i->name] << " = "; - i->value->print(symbols, str, seen); + i->value->print(symbols, str, seen, depth - 1); str << "; "; } str << "}"; @@ -139,7 +144,7 @@ void Value::print(const SymbolTable & symbols, std::ostream & str, str << "[ "; for (auto v2 : listItems()) { if (v2) - v2->print(symbols, str, seen); + v2->print(symbols, str, seen, depth - 1); else str << "(nullptr)"; str << " "; @@ -181,11 +186,10 @@ void Value::print(const SymbolTable & symbols, std::ostream & str, } } - -void Value::print(const SymbolTable & symbols, std::ostream & str, bool showRepeated) const -{ +void Value::print(const SymbolTable &symbols, std::ostream &str, + bool showRepeated, int depth) const { std::set<const void *> seen; - print(symbols, str, showRepeated ? nullptr : &seen); + print(symbols, str, showRepeated ? nullptr : &seen, depth); } // Pretty print types for assertion errors |