diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2022-07-12 10:46:58 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2022-07-12 10:46:58 -0400 |
| commit | ca187d7455f174da40e26e6e0c8361821ee19559 (patch) | |
| tree | 39b1e3521ca333d9d2a8c7b1d8b43131ed1d6979 /src/include | |
| parent | 09c5acee8ef90a9a94993dad937bdcd56ccaf1e3 (diff) | |
Invent nodetag_only attribute for Nodes.
This allows explaining gen_node_support.pl's handling of execnodes.h
and some other input files as being a shortcut for explicit marking
of all their node declarations as pg_node_attr(nodetag_only).
I foresee that someday we might need to be more fine-grained about
that, and this change provides the infrastructure needed to do so.
For now, it just allows removal of the script's klugy special case
for CallContext and InlineCodeBlock.
Discussion: https://postgr.es/m/75063.1657410615@sss.pgh.pa.us
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/nodes/nodes.h | 5 | ||||
| -rw-r--r-- | src/include/nodes/parsenodes.h | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/include/nodes/nodes.h b/src/include/nodes/nodes.h index adc549002a6..c8ed4e05524 100644 --- a/src/include/nodes/nodes.h +++ b/src/include/nodes/nodes.h @@ -61,12 +61,17 @@ typedef enum NodeTag * * - no_read: Does not support nodeRead() at all. * + * - nodetag_only: Does not support copyObject(), equal(), outNode(), + * or nodeRead(). + * * - special_read_write: Has special treatment in outNode() and nodeRead(). * * Node types can be supertypes of other types whether or not they are marked * abstract: if a node struct appears as the first field of another struct * type, then it is the supertype of that type. The no_copy, no_equal, and * no_read node attributes are automatically inherited from the supertype. + * (Notice that nodetag_only does not inherit, so it's not quite equivalent + * to a combination of other attributes.) * * Valid node field attributes: * diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index 0b6a7bb3650..e2ad7617685 100644 --- a/src/include/nodes/parsenodes.h +++ b/src/include/nodes/parsenodes.h @@ -3382,6 +3382,8 @@ typedef struct DoStmt typedef struct InlineCodeBlock { + pg_node_attr(nodetag_only) /* this is not a member of parse trees */ + NodeTag type; char *source_text; /* source text of anonymous code block */ Oid langOid; /* OID of selected language */ @@ -3408,6 +3410,8 @@ typedef struct CallStmt typedef struct CallContext { + pg_node_attr(nodetag_only) /* this is not a member of parse trees */ + NodeTag type; bool atomic; } CallContext; |