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widl: Add architecture for generating pointer layouts.

This commit is contained in:
Robert Shearman 2006-02-03 18:51:17 +01:00 committed by Alexandre Julliard
parent 19b89289ee
commit ccf509b4c6
1 changed files with 144 additions and 7 deletions
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151
tools/widl/typegen.c
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@ -569,6 +569,113 @@ static size_t type_memsize(const type_t *t, int ptr_level, const expr_t *array)
return size;
}
static int write_pointers(FILE *file, const attr_t *attrs,
const type_t *type, int ptr_level,
const expr_t *array, int level,
size_t *typestring_offset)
{
int pointers_written = 0;
const var_t *v;
/* don't generate a pointer for first-level arrays since we want to
* descend into them to write their pointers, not stop here */
if ((level == 0 || ptr_level == 0) && is_array_type(attrs, ptr_level, array))
{
return write_pointers(file, NULL, type, 0, NULL, level + 1, typestring_offset);
}
if (ptr_level != 0)
{
/* FIXME: only general algorithm implemented, not the actual writing */
error("write_pointers: Writing type format string for pointer is unimplemented\n");
return 1;
}
/* FIXME: search through all refs for pointers too */
while(type_has_ref(type))
type = type->ref;
switch (type->type)
{
/* note: don't descend into complex structures or unions since these
* will always be generated as a separate type */
case RPC_FC_STRUCT:
case RPC_FC_CVSTRUCT:
case RPC_FC_CPSTRUCT:
case RPC_FC_CSTRUCT:
case RPC_FC_PSTRUCT:
v = type->fields;
if (!v) break;
while (NEXT_LINK(v)) v = NEXT_LINK(v);
for (; v; v = PREV_LINK(v))
pointers_written += write_pointers(file, v->attrs, v->type,
v->ptr_level, v->array,
level + 1,
typestring_offset);
break;
default:
/* nothing to do */
break;
}
return pointers_written;
}
static size_t write_pointer_description(FILE *file, const attr_t *attrs,
const type_t *type, int ptr_level,
const expr_t *array, int level,
size_t typestring_offset)
{
size_t size = 0;
const var_t *v;
/* don't generate a pointer for first-level arrays since we want to
* descend into them to write their pointers, not stop here */
if ((level == 0 || ptr_level == 0) && is_array_type(attrs, ptr_level, array))
{
return write_pointer_description(file, NULL, type, 0, NULL,
level + 1, typestring_offset);
}
if (ptr_level != 0)
{
/* FIXME: only general algorithm implemented, not the actual writing */
error("write_pointer_description: Writing pointer description is unimplemented\n");
return 0;
}
/* FIXME: search through all refs for pointers too */
switch (type->type)
{
/* note: don't descend into complex structures or unions since these
* will always be generated as a separate type */
case RPC_FC_STRUCT:
case RPC_FC_CVSTRUCT:
case RPC_FC_CPSTRUCT:
case RPC_FC_CSTRUCT:
case RPC_FC_PSTRUCT:
v = type->fields;
if (!v) break;
while (NEXT_LINK(v)) v = NEXT_LINK(v);
for (; v; v = PREV_LINK(v))
size += write_pointer_description(file, v->attrs, v->type,
v->ptr_level, v->array,
level + 1,
typestring_offset);
break;
default:
/* nothing to do */
break;
}
return size;
}
static size_t write_string_tfs(FILE *file, const attr_t *attrs,
const type_t *type, const expr_t *array,
const char *name, size_t *typestring_offset)
@ -635,9 +742,7 @@ static size_t write_array_tfs(FILE *file, const attr_t *attrs,
const expr_t *size_is = get_attrp(attrs, ATTR_SIZEIS);
int has_length = length_is && (length_is->type != EXPR_VOID);
int has_size = (size_is && (size_is->type != EXPR_VOID)) || !array->is_const;
size_t start_offset = *typestring_offset;
/* FIXME: need to analyse type for pointers */
size_t start_offset;
if (array && NEXT_LINK(array)) /* multi-dimensional array */
{
@ -646,6 +751,14 @@ static size_t write_array_tfs(FILE *file, const attr_t *attrs,
}
else
{
size_t pointer_start_offset = *typestring_offset;
int has_pointer = 0;
if (write_pointers(file, attrs, type, 0, array, 0, typestring_offset) > 0)
has_pointer = 1;
start_offset = *typestring_offset;
if (!has_length && !has_size)
{
/* fixed array */
@ -669,7 +782,13 @@ static size_t write_array_tfs(FILE *file, const attr_t *attrs,
*typestring_offset += 6;
}
/* FIXME: write out pointer descriptor if necessary */
if (has_pointer)
{
print_file(file, 2, "0x%x, /* FC_PP */\n", RPC_FC_PP);
print_file(file, 2, "0x%x, /* FC_PAD */\n", RPC_FC_PAD);
write_pointer_description(file, attrs, type, 0, array, 0, pointer_start_offset);
print_file(file, 2, "0x%x, /* FC_END */\n", RPC_FC_END);
}
print_file(file, 2, "0x0, /* FIXME: write out conversion data */\n");
print_file(file, 2, "FC_END,\n");
@ -714,7 +833,13 @@ static size_t write_array_tfs(FILE *file, const attr_t *attrs,
current_structure,
length_is);
/* FIXME: write out pointer descriptor if necessary */
if (has_pointer)
{
print_file(file, 2, "0x%x, /* FC_PP */\n", RPC_FC_PP);
print_file(file, 2, "0x%x, /* FC_PAD */\n", RPC_FC_PAD);
write_pointer_description(file, attrs, type, 0, array, 0, pointer_start_offset);
print_file(file, 2, "0x%x, /* FC_END */\n", RPC_FC_END);
}
print_file(file, 2, "0x0, /* FIXME: write out conversion data */\n");
print_file(file, 2, "FC_END,\n");
@ -738,7 +863,13 @@ static size_t write_array_tfs(FILE *file, const attr_t *attrs,
current_structure,
size_is ? size_is : array);
/* FIXME: write out pointer descriptor if necessary */
if (has_pointer)
{
print_file(file, 2, "0x%x, /* FC_PP */\n", RPC_FC_PP);
print_file(file, 2, "0x%x, /* FC_PAD */\n", RPC_FC_PAD);
write_pointer_description(file, attrs, type, 0, array, 0, pointer_start_offset);
print_file(file, 2, "0x%x, /* FC_END */\n", RPC_FC_END);
}
print_file(file, 2, "0x0, /* FIXME: write out conversion data */\n");
print_file(file, 2, "FC_END,\n");
@ -765,7 +896,13 @@ static size_t write_array_tfs(FILE *file, const attr_t *attrs,
current_structure,
length_is);
/* FIXME: write out pointer descriptor if necessary */
if (has_pointer)
{
print_file(file, 2, "0x%x, /* FC_PP */\n", RPC_FC_PP);
print_file(file, 2, "0x%x, /* FC_PAD */\n", RPC_FC_PAD);
write_pointer_description(file, attrs, type, 0, array, 0, pointer_start_offset);
print_file(file, 2, "0x%x, /* FC_END */\n", RPC_FC_END);
}
print_file(file, 2, "0x0, /* FIXME: write out conversion data */\n");
print_file(file, 2, "FC_END,\n");