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Value: extract Value::StringWithContext

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This commit is contained in:
Robert Hensing 2023-11-12 03:02:02 +01:00
parent 7ba4e073e8
commit 2eb59c34b5
1 changed files with 28 additions and 26 deletions
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20
src/libexpr/value.hh
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@ -158,18 +158,13 @@ public:
inline bool isPrimOp() const { return internalType == tPrimOp; };
inline bool isPrimOpApp() const { return internalType == tPrimOpApp; };
union
{
NixInt integer;
bool boolean;
/**
* Strings in the evaluator carry a so-called `context` which
* is a list of strings representing store paths. This is to
* allow users to write things like
*
* "--with-freetype2-library=" + freetype + "/lib"
*
* where `freetype` is a derivation (or a source to be copied
* to the store). If we just concatenated the strings without
* keeping track of the referenced store paths, then if the
@ -185,10 +180,17 @@ public:
* For canonicity, the store paths should be in sorted order.
*/
struct {
struct StringWithContext {
const char * c_str;
const char * * context; // must be in sorted order
} string;
};
union
{
NixInt integer;
bool boolean;
StringWithContext string;
struct {
InputAccessor * accessor;