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c++: locations: complete the API and fix comments

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There are no support for += between locations, and some comments are wrong.
Reported by Alexandre Duret-Lutz.

* data/location.cc: Fix.
* doc/bison.texi: Document.
* tests/c++.at: Check.
This commit is contained in:
Akim Demaille
2015-01-05 18:20:28 +01:00
parent 478c4a8f49
commit 56351d4c7b
3 changed files with 34 additions and 16 deletions
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7
tests/c++.at
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@@ -60,8 +60,10 @@ main (void)
{
int fail = 0;
]AT_YYLTYPE[ loc; fail += check (loc, "1.1");
fail += check (loc + 10, "1.1-10");
loc += 10; fail += check (loc, "1.1-10");
loc += -5; fail += check (loc, "1.1-5");
fail += check (loc - 5, "1.1");
loc -= 5; fail += check (loc, "1.1");
// Check that we don't go below.
// http://lists.gnu.org/archive/html/bug-bison/2013-02/msg00000.html
@@ -70,6 +72,11 @@ main (void)
loc.columns (10); loc.lines (10); fail += check (loc, "1.1-11.0");
loc.lines (-2); fail += check (loc, "1.1-9.0");
loc.lines (-10); fail += check (loc, "1.1");
]AT_YYLTYPE[ loc2 (YY_NULLPTR, 5, 10);
fail += check (loc2, "5.10");
fail += check (loc + loc2, "1.1-5.9");
loc += loc2; fail += check (loc, "1.1-5.9");
return !fail;
}
]])