[gi-docgen/generic-id-ref: 2/4] gir: Find symbols inside dependencies

[Emmanuele Bassi <ebassi src gnome org>]

commit c693976d7bd74bcec66abc5dd0e8eedbdfadabea
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sun Aug 22 18:06:15 2021 +0100

    gir: Find symbols inside dependencies
    
    If a C symbol is not found in the current namespace, traverse all the
    dependencies to find it. If we do find it, return the namespace object
    that contains the symbol.

 gidocgen/gir/ast.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)
---
diff --git a/gidocgen/gir/ast.py b/gidocgen/gir/ast.py
index bd2e6a2..e8fe7b0 100644
--- a/gidocgen/gir/ast.py
+++ b/gidocgen/gir/ast.py
@@ -1170,3 +1170,15 @@ class Repository:
             if t.resolved:
                 return t
         return types[0]
+
+    def find_symbol(self, name: str) -> T.Optional[T.Tuple[Namespace, Type]]:
+        log.debug(f"Looking for symbol {name} in current namespace {self.namespace.name}")
+        res = self.namespace.find_symbol(name)
+        if res is not None:
+            return (self.namespace, res)
+        for repo in self.includes.values():
+            log.debug(f"Looking for symbol {name} in namespace {repo.namespace.name}")
+            res = repo.namespace.find_symbol(name)
+            if res is not None:
+                return (repo.namespace, res)
+        return None