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Add error context for most basic coercions

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This commit is contained in:
Guillaume Maudoux 2022-03-04 05:04:47 +01:00
parent 00e242feed
commit be1f069746
21 changed files with 309 additions and 275 deletions
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6
src/libexpr/primops/fetchMercurial.cc
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@ -19,8 +19,6 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
if (args[0]->type() == nAttrs) {
state.forceAttrs(*args[0], pos);
for (auto & attr : *args[0]->attrs) {
std::string_view n(attr.name);
if (n == "url")
@ -28,14 +26,14 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
else if (n == "rev") {
// Ugly: unlike fetchGit, here the "rev" attribute can
// be both a revision or a branch/tag name.
auto value = state.forceStringNoCtx(*attr.value, *attr.pos);
auto value = state.forceStringNoCtx(*attr.value, *attr.pos, "While evaluating the `rev` attribute passed to builtins.fetchMercurial");
if (std::regex_match(value.begin(), value.end(), revRegex))
rev = Hash::parseAny(value, htSHA1);
else
ref = value;
}
else if (n == "name")
name = state.forceStringNoCtx(*attr.value, *attr.pos);
name = state.forceStringNoCtx(*attr.value, *attr.pos, "While evaluating the `name` attribute passed to builtins.fetchMercurial");
else
throw EvalError({
.msg = hintfmt("unsupported argument '%s' to 'fetchMercurial'", attr.name),