Add inline allocation of bytes fields

This commit adds a new FT_INLINE allocation type that forces bytes
fields to be inlined into the struct. E.g., pb_byte_t my_bytes[32].
This requires max_size for the bytes field. The FT_INLINE type is
represented as a new LTYPE: FT_LTYPE_FIXED_LENGTH_BYTES.

This commit also updates the documentation with FT_INLINE and
FT_LTYPE_FIXED_LENGTH_BYTES.

Added an AUTHORS file in apparent order of appearance in the git log
history from $(git log --all).

4 files changed, 109 insertions, 0 deletions

diff --git a/tests/inline/SConscript b/tests/inline/SConscript
new file mode 100644
index 00000000..34371fda
--- /dev/null
+++ b/tests/inline/SConscript
@@ -0,0 +1,16 @@
+# Test that inlined bytes fields work.
+
+Import("env")
+
+env.NanopbProto("inline")
+env.Object("inline.pb.c")
+
+env.Match(["inline.pb.h", "inline.expected"])
+
+p = env.Program(["inline_unittests.c",
+                 "inline.pb.c",
+                 "$COMMON/pb_encode.o",
+                 "$COMMON/pb_decode.o",
+                 "$COMMON/pb_common.o"])
+
+env.RunTest(p)
diff --git a/tests/inline/inline.expected b/tests/inline/inline.expected
new file mode 100644
index 00000000..593e972b
--- /dev/null
+++ b/tests/inline/inline.expected
@@ -0,0 +1,3 @@
+pb_byte_t data\[32\];
+bool has_data;
+pb_byte_t data\[64\];
diff --git a/tests/inline/inline.proto b/tests/inline/inline.proto
new file mode 100644
index 00000000..6e511f0a
--- /dev/null
+++ b/tests/inline/inline.proto
@@ -0,0 +1,17 @@
+/* Test nanopb option parsing.
+ * options.expected lists the patterns that are searched for in the output.
+ */
+
+syntax = "proto2";
+
+import "nanopb.proto";
+
+message Message1
+{
+    required bytes data = 1 [(nanopb).type = FT_INLINE, (nanopb).max_size = 32];
+}
+
+message Message2
+{
+    optional bytes data = 1 [(nanopb).type = FT_INLINE, (nanopb).max_size = 64];
+}
diff --git a/tests/inline/inline_unittests.c b/tests/inline/inline_unittests.c
new file mode 100644
index 00000000..b5834c7e
--- /dev/null
+++ b/tests/inline/inline_unittests.c
@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <string.h>
+#include <pb_decode.h>
+#include <pb_encode.h>
+#include "unittests.h"
+#include "inline.pb.h"
+
+int main()
+{
+    int status = 0;
+    int i = 0;
+    COMMENT("Test inline byte fields");
+
+    {
+      Message1 msg1 = Message1_init_zero;
+      TEST(sizeof(msg1.data) == 32);
+    }
+
+    {
+      Message1 msg1 = Message1_init_zero;
+      pb_byte_t msg1_buffer[Message1_size];
+      pb_ostream_t ostream = pb_ostream_from_buffer(msg1_buffer, Message1_size);
+      Message1 msg1_deserialized = Message1_init_zero;
+      pb_istream_t istream = pb_istream_from_buffer(msg1_buffer, Message1_size);
+
+      for (i = 0; i < 32; i++) {
+        msg1.data[i] = i;
+      }
+
+      TEST(pb_encode(&ostream, Message1_fields, &msg1));
+      TEST(ostream.bytes_written == Message1_size);
+
+      TEST(pb_decode(&istream, Message1_fields, &msg1_deserialized));
+
+      TEST(istream.bytes_left == 0);
+      TEST(memcmp(&msg1_deserialized, &msg1, sizeof(msg1)) == 0);
+    }
+
+    {
+      Message2 msg2 = {true, {0}};
+      Message2 msg2_no_data = {false, {1}};
+      pb_byte_t msg2_buffer[Message2_size];
+      pb_ostream_t ostream = pb_ostream_from_buffer(msg2_buffer, Message2_size);
+      Message2 msg2_deserialized = Message2_init_zero;
+      pb_istream_t istream = pb_istream_from_buffer(msg2_buffer, Message2_size);
+
+      for (i = 0; i < 64; i++) {
+        msg2.data[i] = i;
+      }
+
+      TEST(pb_encode(&ostream, Message2_fields, &msg2));
+      TEST(ostream.bytes_written == Message2_size);
+
+      TEST(pb_decode(&istream, Message2_fields, &msg2_deserialized));
+
+      TEST(istream.bytes_left == 0);
+      TEST(memcmp(&msg2_deserialized, &msg2, sizeof(msg2)) == 0);
+      TEST(msg2_deserialized.has_data);
+
+      memset(msg2_buffer, 0, sizeof(msg2_buffer));
+      ostream = pb_ostream_from_buffer(msg2_buffer, Message2_size);
+      TEST(pb_encode(&ostream, Message2_fields, &msg2_no_data));
+      istream = pb_istream_from_buffer(msg2_buffer, Message2_size);
+      TEST(pb_decode(&istream, Message2_fields, &msg2_deserialized));
+      TEST(!msg2_deserialized.has_data);
+      TEST(memcmp(&msg2_deserialized, &msg2, sizeof(msg2)) != 0);
+    }
+
+    if (status != 0)
+        fprintf(stdout, "\n\nSome tests FAILED!\n");
+
+    return status;
+}