[Spice-devel] [PATCH v3 30/51] Generate code to output parse structure

[Christophe Fergeau]

I'm not sure how to parse "to output parse structure", "to output
structure parsing code" ?

Christophe


On Tue, Jul 21, 2015 at 05:46:00PM +0100, Frediano Ziglio wrote:
> Write a function and call it to be able to reuse it.
> 
> Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
> ---
>  codegen/Makefile.am         |  1 +
>  codegen/check_dissector     |  2 ++
>  codegen/out_struct1.txt     |  7 +++++++
>  codegen/test.proto          |  9 +++++++++
>  python_modules/dissector.py | 20 ++++++++++++++++++++
>  5 files changed, 39 insertions(+)
>  create mode 100644 codegen/out_struct1.txt
> 
> diff --git a/codegen/Makefile.am b/codegen/Makefile.am
> index 1281690..d8da936 100644
> --- a/codegen/Makefile.am
> +++ b/codegen/Makefile.am
> @@ -59,6 +59,7 @@ EXTRA_DIST =				\
>  	out_empty.txt			\
>  	data_base1			\
>  	out_base1.txt			\
> +	out_struct1.txt			\
>  	$(NULL)
>  
>  CLEANFILES = test.c test.h enums.h dissector.c dissector.h *.trs check_dissector.txt
> diff --git a/codegen/check_dissector b/codegen/check_dissector
> index bff3853..767ee9d 100755
> --- a/codegen/check_dissector
> +++ b/codegen/check_dissector
> @@ -54,4 +54,6 @@ fi
>  # check just base types
>  check data_base1 1 1 out_base1.txt
>  
> +check data_base1 1 1 out_struct1.txt --client
> +
>  exit 0
> diff --git a/codegen/out_struct1.txt b/codegen/out_struct1.txt
> new file mode 100644
> index 0000000..a1d429c
> --- /dev/null
> +++ b/codegen/out_struct1.txt
> @@ -0,0 +1,7 @@
> +--- tree
> +    --- item
> +    Text: 33154 (0x8182)
> +    Name: dummy
> +    Abbrev: spice2.auto.Dummy_dummy
> +    Type: FT_UINT16
> +    Base: BASE_DEC
> diff --git a/codegen/test.proto b/codegen/test.proto
> index 28d7769..06fa303 100644
> --- a/codegen/test.proto
> +++ b/codegen/test.proto
> @@ -30,6 +30,10 @@ flags32 F32 {
>  	N, O, P, Q
>  };
>  
> +struct Dummy {
> +    uint16 dummy;
> +};
> +
>  channel BaseChannel {
>    server:
>      message {
> @@ -49,6 +53,11 @@ channel BaseChannel {
>  	F32 f32;
>      } Base1 = 1;
>      Empty empty = 100;
> +
> +  client:
> +    message {
> +        Dummy struct;
> +    } Struct1 = 1;
>  };
>  
>  protocol Spice {
> diff --git a/python_modules/dissector.py b/python_modules/dissector.py
> index aa71615..edc6dc3 100644
> --- a/python_modules/dissector.py
> +++ b/python_modules/dissector.py
> @@ -307,9 +307,29 @@ def write_array(writer, container, member, nelements, array, dest, scope):
>  def write_pointer(writer, container, member, t, dest, scope):
>      assert(t.is_pointer())
>  
> +
> +def write_struct_func(writer, t, func_name, index):
> +    func_name = 'dissect_spice_struct_' + t.name
> +
> +    if writer.is_generated("struct", t.name):
> +        return
> +    writer.set_is_generated("struct", t.name)
> +
> +    writer = writer.function_helper()
> +    scope = writer.function(func_name, "guint32", "GlobalInfo *glb _U_, proto_tree *tree _U_, guint32 offset, gint32 index _U_", True)
> +    dest = RootDestination(scope)
> +    write_container_parser(writer, t, dest)
> +    writer.statement('return offset')
> +    writer.end_block()
> +
> +
>  def write_struct(writer, member, t, index, dest, scope):
>      assert(t.is_struct())
>  
> +    func_name = 'dissect_spice_struct_' + t.name
> +    write_struct_func(writer, t, func_name, index)
> +    writer.assign('offset', '%s(glb, %s, offset, %s)' % (func_name, dest.level.tree, index))
> +
>  def write_member_primitive(writer, container, member, t, dest, scope):
>      assert(t.is_primitive())
>  
> -- 
> 2.1.0
> 
> _______________________________________________
> Spice-devel mailing list
> Spice-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/spice-devel
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