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concatenation and string coercion. This was a big mess (see
e.g. NIX-67). Contexts are now folded into strings, so that they
don't cause evaluation errors when they're not expected. The
semantics of paths has been clarified (see nixexpr-ast.def).
toString() and coerceToString() have been merged.
Semantic change: paths are now copied to the store when they're in a
concatenation (and in most other situations - that's the
formalisation of the meaning of a path). So
"foo " + ./bla
evaluates to "foo /nix/store/hash...-bla", not "foo
/path/to/current-dir/bla". This prevents accidental impurities, and
is more consistent with the treatment of derivation outputs, e.g.,
`"foo " + bla' where `bla' is a derivation. (Here `bla' would be
replaced by the output path of `bla'.)
16 lines
249 B
C++
16 lines
249 B
C++
#ifndef __EXPR_TO_XML_H
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#define __EXPR_TO_XML_H
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#include <string>
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#include <map>
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#include "nixexpr.hh"
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#include "aterm.hh"
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namespace nix {
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void printTermAsXML(Expr e, std::ostream & out, PathSet & context);
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}
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#endif /* !__EXPR_TO_XML_H */
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