[PATCH 4/7] widl: Write C++ template declarations for parameterized types.
Rémi Bernon
rbernon at codeweavers.com
Mon Feb 22 03:03:02 CST 2021
Based on a patch from Steve Lhomme.
Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
---
tools/widl/header.c | 45 +++++++++++++++++++++++++++++++++++++++++++
tools/widl/typetree.c | 5 +++++
2 files changed, 50 insertions(+)
diff --git a/tools/widl/header.c b/tools/widl/header.c
index 95bdb8cacb8..4e3b1cb6cf3 100644
--- a/tools/widl/header.c
+++ b/tools/widl/header.c
@@ -125,6 +125,25 @@ unsigned int get_attrv(const attr_list_t *list, enum attr_type t)
return 0;
}
+static char *format_parameterized_type_args(const type_t *type, const char *prefix, const char *suffix)
+{
+ typeref_list_t *params;
+ typeref_t *ref;
+ size_t len = 0, pos = 0;
+ char *buf = NULL;
+
+ params = type->details.parameterized.params;
+ if (params) LIST_FOR_EACH_ENTRY(ref, params, typeref_t, entry)
+ {
+ assert(ref->type->type_type != TYPE_POINTER);
+ pos += strappend(&buf, &len, pos, "%s%s%s", prefix, ref->type->name, suffix);
+ if (list_next(params, &ref->entry)) pos += strappend(&buf, &len, pos, ", ");
+ }
+
+ if (!buf) return xstrdup("");
+ return buf;
+}
+
static void write_guid(FILE *f, const char *guid_prefix, const char *name, const UUID *uuid)
{
if (!uuid) return;
@@ -1477,6 +1496,30 @@ static void write_function_proto(FILE *header, const type_t *iface, const var_t
fprintf(header, ");\n\n");
}
+static void write_parameterized_type_forward(FILE *header, type_t *type)
+{
+ type_t *iface = type->details.parameterized.type;
+ char *args;
+
+ if (type_get_type(iface) == TYPE_DELEGATE) iface = type_delegate_get_iface(iface);
+
+ fprintf(header, "#if defined(__cplusplus) && !defined(CINTERFACE)\n");
+ write_namespace_start(header, type->namespace);
+
+ args = format_parameterized_type_args(type, "class ", "");
+ write_line(header, 0, "template <%s>", args);
+ write_line(header, 0, "struct %s_impl;\n", iface->name);
+
+ write_line(header, 0, "template <%s>", args);
+ free(args);
+ args = format_parameterized_type_args(type, "", "");
+ write_line(header, 0, "struct %s : %s_impl<%s> {};", iface->name, iface->name, args);
+ free(args);
+
+ write_namespace_end(header, type->namespace);
+ fprintf(header, "#endif\n\n" );
+}
+
static void write_forward(FILE *header, type_t *iface)
{
fprintf(header, "#ifndef __%s_FWD_DEFINED__\n", iface->c_name);
@@ -1872,6 +1915,8 @@ static void write_forward_decls(FILE *header, const statement_list_t *stmts)
write_coclass_forward(header, stmt->u.type);
else if (type_get_type(stmt->u.type) == TYPE_RUNTIMECLASS)
write_runtimeclass_forward(header, stmt->u.type);
+ else if (type_get_type(stmt->u.type) == TYPE_PARAMETERIZED_TYPE)
+ write_parameterized_type_forward(header, stmt->u.type);
break;
case STMT_TYPEREF:
case STMT_IMPORTLIB:
diff --git a/tools/widl/typetree.c b/tools/widl/typetree.c
index 8bce314018a..e16b7713e91 100644
--- a/tools/widl/typetree.c
+++ b/tools/widl/typetree.c
@@ -929,6 +929,8 @@ type_t *type_parameterized_interface_define(type_t *type, attr_list_t *attrs, ty
iface->details.iface->async_iface = NULL;
iface->details.iface->requires = requires;
+ iface->name = type->name;
+
type->defined = TRUE;
return type;
}
@@ -969,6 +971,9 @@ type_t *type_parameterized_delegate_define(type_t *type, attr_list_t *attrs, sta
iface->details.iface->async_iface = NULL;
iface->details.iface->requires = NULL;
+ delegate->name = type->name;
+ compute_delegate_iface_names(delegate, type, type->details.parameterized.params);
+
type->defined = TRUE;
return type;
}
--
2.30.0
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