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annotations: add positions

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Extend the parser to record positions, in build_node, build_node_delete,
and build_property.

srcpos structures are added to the property and node types, and to the
parameter lists of the above functions that construct these types.
Nodes and properties that are created by the compiler rather than from
parsing source code have NULL as the srcpos value.

merge_nodes, defined in livetree.c, uses srcpos_extend to combine
multiple positions, resulting in a list of positions.  srcpos_extend is
defined in srcpos.c.  New elements are added at the end.  The srcpos
type, define in srcpos.h, is now a list structure with a next field.

Another change to srcpos.c is to make srcpos_copy always do a full copy,
including a copy of the file substructure.  This is required because
when dtc is used on the output of cpp, the successive detected file
names overwrite the file name in the file structure.  The next field
does not need to be deep copied, because it is only updated in newly
copied positions and the positions to which it points have also been
copied.  File names are only updated in uncopied position structures.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Julia Lawall 2018-10-26 17:44:33 +02:00 • committed by David Gibson
parent ff2ad38f6a
commit baa1d2cf78
7 changed files with 67 additions and 23 deletions
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5
fstree.c
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@ -34,7 +34,7 @@ static struct node *read_fstree(const char *dirname)
if (!d)
die("Couldn't opendir() \"%s\": %s\n", dirname, strerror(errno));
tree = build_node(NULL, NULL);
tree = build_node(NULL, NULL, NULL);
while ((de = readdir(d)) != NULL) {
char *tmpname;
@ -60,7 +60,8 @@ static struct node *read_fstree(const char *dirname)
} else {
prop = build_property(xstrdup(de->d_name),
data_copy_file(pfile,
st.st_size));
st.st_size),
NULL);
add_property(tree, prop);
fclose(pfile);
}