From 66e9aa8d66aae27098693554d26100417606164b Mon Sep 17 00:00:00 2001
From: John-Mark Bell <jmb@netsurf-browser.org>
Date: Mon, 1 Feb 2016 20:14:34 +0000
Subject: Add support for TreatNullAs=EmptyString extended attribute.

---
 src/duk-libdom-generated.c | 17 +++++++++++++++--
 src/ir.c                   |  4 ++++
 src/ir.h                   |  1 +
 3 files changed, 20 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/duk-libdom-generated.c b/src/duk-libdom-generated.c
index 0790e00..9305dcf 100644
--- a/src/duk-libdom-generated.c
+++ b/src/duk-libdom-generated.c
@@ -262,8 +262,21 @@ output_generated_attribute_setter(FILE* outf,
                         "\tdom_exception exc;\n"
                         "\tdom_string *str;\n"
                         "\tduk_size_t slen;\n"
-                        "\tconst char *s;\n"
-                        "\ts = duk_safe_to_lstring(ctx, 0, &slen);\n"
+                        "\tconst char *s;\n");
+                if ((atributee->treatnullas != NULL) &&
+                    (strcmp(atributee->treatnullas, "EmptyString") == 0)) {
+                        fprintf(outf,
+                                "\tif (duk_is_null(ctx, 0)) {\n"
+                                "\t\ts = \"\";\n"
+                                "\t\tslen = 0;\n"
+                                "\t} else {\n"
+                                "\t\ts = duk_safe_to_lstring(ctx, 0, &slen);\n"
+                                "\t}\n");
+                } else {
+                        fprintf(outf,
+                                "\ts = duk_safe_to_lstring(ctx, 0, &slen);\n");
+                }
+                fprintf(outf,
                         "\n"
                         "\texc = dom_string_create((const uint8_t *)s, slen, &str);\n"
                         "\tif (exc != DOM_NO_ERR) {\n"
diff --git a/src/ir.c b/src/ir.c
index 7a1bc5a..f77eb3d 100644
--- a/src/ir.c
+++ b/src/ir.c
@@ -607,6 +607,10 @@ attribute_map_new(struct webidl_node *interface,
                                      cure->name);
                         }
 
+                        /* check for treatnullas extended attribute */
+                        cure->treatnullas = get_extended_value(at_node,
+                                                               "TreatNullAs");
+
                         /* move to next attribute */
                         cure++;
 
diff --git a/src/ir.h b/src/ir.h
index a6fcf12..6b848ea 100644
--- a/src/ir.h
+++ b/src/ir.h
@@ -69,6 +69,7 @@ struct ir_attribute_entry {
 
         enum webidl_type_modifier modifier; /**< modifier for the attribute intself */
         const char *putforwards; /**< putforwards attribute */
+        const char *treatnullas; /**< treatnullas attribute */
 
         struct genbind_node *getter; /**< getter from binding */
         struct genbind_node *setter; /**< getter from binding */
-- 
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