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libexpr: extend Value::print to allow limited depth

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This commit is contained in:
Yingchi Long 2023-06-22 12:27:19 +08:00
parent c48277c1c1
commit 1400fde144
3 changed files with 81 additions and 10 deletions
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66
src/libexpr/tests/value/print.cc
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@ -167,4 +167,70 @@ TEST_F(ValuePrintingTests, vBlackhole)
test(vBlackhole, "«potential infinite recursion»");
}
TEST_F(ValuePrintingTests, depthAttrs)
{
Value vOne;
vOne.mkInt(1);
Value vTwo;
vTwo.mkInt(2);
BindingsBuilder builder(state, state.allocBindings(10));
builder.insert(state.symbols.create("one"), &vOne);
builder.insert(state.symbols.create("two"), &vTwo);
Value vAttrs;
vAttrs.mkAttrs(builder.finish());
BindingsBuilder builder2(state, state.allocBindings(10));
builder2.insert(state.symbols.create("one"), &vOne);
builder2.insert(state.symbols.create("two"), &vTwo);
builder2.insert(state.symbols.create("nested"), &vAttrs);
Value vNested;
vNested.mkAttrs(builder2.finish());
test(vNested, "{ nested = «too deep»; one = «too deep»; two = «too deep»; }", false, 1);
test(vNested, "{ nested = { one = «too deep»; two = «too deep»; }; one = 1; two = 2; }", false, 2);
test(vNested, "{ nested = { one = 1; two = 2; }; one = 1; two = 2; }", false, 3);
test(vNested, "{ nested = { one = 1; two = 2; }; one = 1; two = 2; }", false, 4);
}
TEST_F(ValuePrintingTests, depthList)
{
Value vOne;
vOne.mkInt(1);
Value vTwo;
vTwo.mkInt(2);
BindingsBuilder builder(state, state.allocBindings(10));
builder.insert(state.symbols.create("one"), &vOne);
builder.insert(state.symbols.create("two"), &vTwo);
Value vAttrs;
vAttrs.mkAttrs(builder.finish());
BindingsBuilder builder2(state, state.allocBindings(10));
builder2.insert(state.symbols.create("one"), &vOne);
builder2.insert(state.symbols.create("two"), &vTwo);
builder2.insert(state.symbols.create("nested"), &vAttrs);
Value vNested;
vNested.mkAttrs(builder2.finish());
Value vList;
state.mkList(vList, 5);
vList.bigList.elems[0] = &vOne;
vList.bigList.elems[1] = &vTwo;
vList.bigList.elems[2] = &vNested;
vList.bigList.size = 3;
test(vList, "[ «too deep» «too deep» «too deep» ]", false, 1);
test(vList, "[ 1 2 { nested = «too deep»; one = «too deep»; two = «too deep»; } ]", false, 2);
test(vList, "[ 1 2 { nested = { one = «too deep»; two = «too deep»; }; one = 1; two = 2; } ]", false, 3);
test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", false, 4);
test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", false, 5);
}
} // namespace nix