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* [binutils-gdb] Introduce a block iterator wrapper
@ 2023-02-19 23:38 Tom Tromey
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From: Tom Tromey @ 2023-02-19 23:38 UTC (permalink / raw)
To: gdb-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0f50815c894bea5d8f7c14b7c1639325bd0b4abb
commit 0f50815c894bea5d8f7c14b7c1639325bd0b4abb
Author: Tom Tromey <tom@tromey.com>
Date: Thu Jan 19 18:44:38 2023 -0700
Introduce a block iterator wrapper
This introduces a C++-style iterator that wraps the existing
block_iterator. It also adds a range adapter. These will be used in
a later patch.
Diff:
---
gdb/block.h | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/gdb/block.h b/gdb/block.h
index 03aeebddc6b..7341d03a07e 100644
--- a/gdb/block.h
+++ b/gdb/block.h
@@ -486,6 +486,56 @@ extern struct symbol *block_iterator_first
extern struct symbol *block_iterator_next (struct block_iterator *iterator);
+/* An iterator that wraps a block_iterator. The naming here is
+ unfortunate, but block_iterator was named before gdb switched to
+ C++. */
+struct block_iterator_wrapper
+{
+ typedef block_iterator_wrapper self_type;
+ typedef struct symbol *value_type;
+
+ explicit block_iterator_wrapper (const struct block *block,
+ const lookup_name_info *name = nullptr)
+ : m_sym (block_iterator_first (block, &m_iter, name))
+ {
+ }
+
+ block_iterator_wrapper ()
+ : m_sym (nullptr)
+ {
+ }
+
+ value_type operator* () const
+ {
+ return m_sym;
+ }
+
+ bool operator== (const self_type &other) const
+ {
+ return m_sym == other.m_sym;
+ }
+
+ bool operator!= (const self_type &other) const
+ {
+ return m_sym != other.m_sym;
+ }
+
+ self_type &operator++ ()
+ {
+ m_sym = block_iterator_next (&m_iter);
+ return *this;
+ }
+
+private:
+
+ struct symbol *m_sym;
+ struct block_iterator m_iter;
+};
+
+/* An iterator range for block_iterator_wrapper. */
+
+typedef iterator_range<block_iterator_wrapper> block_iterator_range;
+
/* Return true if symbol A is the best match possible for DOMAIN. */
extern bool best_symbol (struct symbol *a, const domain_enum domain);
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