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Deduplicate string literal rendering, fix 4909

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This commit is contained in:
Robert Hensing 2023-04-09 22:42:20 +02:00
parent 8f0ec323ea
commit 4e0804c920
7 changed files with 86 additions and 39 deletions
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19
src/libexpr/nixexpr.cc
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@ -3,6 +3,7 @@
#include "eval.hh"
#include "symbol-table.hh"
#include "util.hh"
#include "value/print.hh"
#include <cstdlib>
@ -62,18 +63,6 @@ Pos::operator std::shared_ptr<AbstractPos>() const
/* Displaying abstract syntax trees. */
static void showString(std::ostream & str, std::string_view s)
{
str << '"';
for (auto c : s)
if (c == '"' || c == '\\' || c == '$') str << "\\" << c;
else if (c == '\n') str << "\\n";
else if (c == '\r') str << "\\r";
else if (c == '\t') str << "\\t";
else str << c;
str << '"';
}
std::ostream & operator <<(std::ostream & str, const SymbolStr & symbol)
{
std::string_view s = symbol;
@ -85,7 +74,7 @@ std::ostream & operator <<(std::ostream & str, const SymbolStr & symbol)
else {
char c = s[0];
if (!((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_')) {
showString(str, s);
printLiteral(str, s);
return str;
}
for (auto c : s)
@ -93,7 +82,7 @@ std::ostream & operator <<(std::ostream & str, const SymbolStr & symbol)
(c >= 'A' && c <= 'Z') ||
(c >= '0' && c <= '9') ||
c == '_' || c == '\'' || c == '-')) {
showString(str, s);
printLiteral(str, s);
return str;
}
str << s;
@ -118,7 +107,7 @@ void ExprFloat::show(const SymbolTable & symbols, std::ostream & str) const
void ExprString::show(const SymbolTable & symbols, std::ostream & str) const
{
showString(str, s);
printLiteral(str, s);
}
void ExprPath::show(const SymbolTable & symbols, std::ostream & str) const