python: add bindings for children of diagnostics

This exposes the Clang API bindings clang_getChildDiagnostics (which returns a
CXDiagnosticSet) and clang_getNumDiagnosticsInSet / clang_getDiagnosticInSet (to
traverse the CXDiagnosticSet), and adds a helper children property in the Python
Diagnostic wrapper.

Also, this adds the missing OVERLOAD_CANDIDATE (700) cursor type.

Patch by Hanson Wang!

llvm-svn: 268167

1 files changed, 12 insertions, 0 deletions

diff --git a/clang/bindings/python/tests/cindex/test_diagnostics.py b/clang/bindings/python/tests/cindex/test_diagnostics.py
index 48ab6176fd1..ba6e545e8b1 100644
--- a/clang/bindings/python/tests/cindex/test_diagnostics.py
+++ b/clang/bindings/python/tests/cindex/test_diagnostics.py
@@ -80,3 +80,15 @@ def test_diagnostic_option():
 
     assert d.option == '-Wunused-parameter'
     assert d.disable_option == '-Wno-unused-parameter'
+
+def test_diagnostic_children():
+    tu = get_tu('void f(int x) {} void g() { f(); }')
+    assert len(tu.diagnostics) == 1
+    d = tu.diagnostics[0]
+
+    children = d.children
+    assert len(children) == 1
+    assert children[0].severity == Diagnostic.Note
+    assert children[0].spelling.endswith('declared here')
+    assert children[0].location.line == 1
+    assert children[0].location.column == 1