diff mbox

[10/55] Introduce la_value_print_inner

Message ID 20191208182958.10181-11-tom@tromey.com
State New
Headers show

Commit Message

Tom Tromey Dec. 8, 2019, 6:29 p.m. UTC
The plan for removing val_print is, essentially, to first duplicate
printing code as needed to use the value API; and then remove the
val_print code.  This makes it possible to do the changes
incrementally while keeping everything working.

This adds a new la_value_print_inner function pointer to struct
language_defn.  Eventually this will replace la_val_print.  This patch
also changes printing to prefer this API, when available -- but no
language defines it yet.

gdb/ChangeLog
2019-12-08  Tom Tromey  <tom@tromey.com>

	* valprint.c (do_val_print): Call la_value_print_inner, if
	available.
	* rust-lang.c (rust_language_defn): Update.
	* p-lang.c (pascal_language_defn): Update.
	* opencl-lang.c (opencl_language_defn): Update.
	* objc-lang.c (objc_language_defn): Update.
	* m2-lang.c (m2_language_defn): Update.
	* language.h (struct language_defn) <la_value_print_inner>: New
	member.
	* language.c (unknown_language_defn, auto_language_defn): Update.
	* go-lang.c (go_language_defn): Update.
	* f-lang.c (f_language_defn): Update.
	* d-lang.c (d_language_defn): Update.
	* c-lang.c (c_language_defn, cplus_language_defn)
	(asm_language_defn, minimal_language_defn): Update.
	* ada-lang.c (ada_language_defn): Update.

Change-Id: I63727fa194511c3d7297db62efe23f8a503ba770
---
 gdb/ChangeLog     | 19 +++++++++++++++++++
 gdb/ada-lang.c    |  1 +
 gdb/c-lang.c      |  4 ++++
 gdb/d-lang.c      |  1 +
 gdb/f-lang.c      |  1 +
 gdb/go-lang.c     |  1 +
 gdb/language.c    |  2 ++
 gdb/language.h    |  7 +++++++
 gdb/m2-lang.c     |  1 +
 gdb/objc-lang.c   |  1 +
 gdb/opencl-lang.c |  1 +
 gdb/p-lang.c      |  1 +
 gdb/rust-lang.c   |  1 +
 gdb/valprint.c    | 10 +++++++---
 14 files changed, 48 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index 3289a8e5c8e..eeccfae69ac 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -14114,6 +14114,7 @@  extern const struct language_defn ada_language_defn = {
   ada_print_type,               /* Print a type using appropriate syntax */
   ada_print_typedef,            /* Print a typedef using appropriate syntax */
   ada_val_print,                /* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   ada_value_print,              /* Print a top-level value */
   ada_read_var_value,		/* la_read_var_value */
   NULL,                         /* Language specific skip_trampoline */
diff --git a/gdb/c-lang.c b/gdb/c-lang.c
index 846970af7b9..24c2eef747a 100644
--- a/gdb/c-lang.c
+++ b/gdb/c-lang.c
@@ -904,6 +904,7 @@  extern const struct language_defn c_language_defn =
   c_print_type,			/* Print a type using appropriate syntax */
   c_print_typedef,		/* Print a typedef using appropriate syntax */
   c_val_print,			/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline */
@@ -1049,6 +1050,7 @@  extern const struct language_defn cplus_language_defn =
   c_print_type,			/* Print a type using appropriate syntax */
   c_print_typedef,		/* Print a typedef using appropriate syntax */
   c_val_print,			/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   cplus_skip_trampoline,	/* Language specific skip_trampoline */
@@ -1103,6 +1105,7 @@  extern const struct language_defn asm_language_defn =
   c_print_type,			/* Print a type using appropriate syntax */
   c_print_typedef,		/* Print a typedef using appropriate syntax */
   c_val_print,			/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline */
@@ -1157,6 +1160,7 @@  extern const struct language_defn minimal_language_defn =
   c_print_type,			/* Print a type using appropriate syntax */
   c_print_typedef,		/* Print a typedef using appropriate syntax */
   c_val_print,			/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline */
diff --git a/gdb/d-lang.c b/gdb/d-lang.c
index 1701976da78..5ce2314ae14 100644
--- a/gdb/d-lang.c
+++ b/gdb/d-lang.c
@@ -225,6 +225,7 @@  extern const struct language_defn d_language_defn =
   c_print_typedef,		/* Print a typedef using appropriate
 				   syntax.  */
   d_val_print,			/* Print a value using appropriate syntax.  */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value.  */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline.  */
diff --git a/gdb/f-lang.c b/gdb/f-lang.c
index 022918efa2d..b8a684e5cf5 100644
--- a/gdb/f-lang.c
+++ b/gdb/f-lang.c
@@ -647,6 +647,7 @@  extern const struct language_defn f_language_defn =
   f_print_type,			/* Print a type using appropriate syntax */
   f_print_typedef,		/* Print a typedef using appropriate syntax */
   f_val_print,			/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* FIXME */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline */
diff --git a/gdb/go-lang.c b/gdb/go-lang.c
index bf2eb1b6f71..38eb0d74836 100644
--- a/gdb/go-lang.c
+++ b/gdb/go-lang.c
@@ -596,6 +596,7 @@  extern const struct language_defn go_language_defn =
   c_print_typedef,		/* Print a typedef using appropriate
 				   syntax.  */
   go_val_print,			/* Print a value using appropriate syntax.  */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value.  */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline.  */
diff --git a/gdb/language.c b/gdb/language.c
index 6ab0ca323d2..00b301e46e2 100644
--- a/gdb/language.c
+++ b/gdb/language.c
@@ -858,6 +858,7 @@  const struct language_defn unknown_language_defn =
   unk_lang_print_type,		/* Print a type using appropriate syntax */
   default_print_typedef,	/* Print a typedef using appropriate syntax */
   unk_lang_val_print,		/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   unk_lang_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   unk_lang_trampoline,		/* Language specific skip_trampoline */
@@ -909,6 +910,7 @@  const struct language_defn auto_language_defn =
   unk_lang_print_type,		/* Print a type using appropriate syntax */
   default_print_typedef,	/* Print a typedef using appropriate syntax */
   unk_lang_val_print,		/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   unk_lang_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   unk_lang_trampoline,		/* Language specific skip_trampoline */
diff --git a/gdb/language.h b/gdb/language.h
index 5fc25a235ff..89cd71c5055 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -231,6 +231,13 @@  struct language_defn
 			  struct value *val,
 			  const struct value_print_options *options);
 
+    /* Print a value using syntax appropriate for this language.
+       RECURSE is the recursion depth.  It is zero-based.  */
+
+    void (*la_value_print_inner) (struct value *, struct ui_file *,
+				  int recurse,
+				  const struct value_print_options *);
+
     /* Print a top-level value using syntax appropriate for this language.  */
 
     void (*la_value_print) (struct value *, struct ui_file *,
diff --git a/gdb/m2-lang.c b/gdb/m2-lang.c
index 2d2dfe31018..924ee0a549c 100644
--- a/gdb/m2-lang.c
+++ b/gdb/m2-lang.c
@@ -394,6 +394,7 @@  extern const struct language_defn m2_language_defn =
   m2_print_type,		/* Print a type using appropriate syntax */
   m2_print_typedef,		/* Print a typedef using appropriate syntax */
   m2_val_print,			/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline */
diff --git a/gdb/objc-lang.c b/gdb/objc-lang.c
index e2a6e800b55..e6cb42e60a2 100644
--- a/gdb/objc-lang.c
+++ b/gdb/objc-lang.c
@@ -382,6 +382,7 @@  extern const struct language_defn objc_language_defn = {
   c_print_type,			/* Print a type using appropriate syntax */
   c_print_typedef,		/* Print a typedef using appropriate syntax */
   c_val_print,			/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   objc_skip_trampoline, 	/* Language specific skip_trampoline */
diff --git a/gdb/opencl-lang.c b/gdb/opencl-lang.c
index 5d03210b569..8ebb35b9e62 100644
--- a/gdb/opencl-lang.c
+++ b/gdb/opencl-lang.c
@@ -1061,6 +1061,7 @@  extern const struct language_defn opencl_language_defn =
   opencl_print_type,		/* Print a type using appropriate syntax */
   c_print_typedef,		/* Print a typedef using appropriate syntax */
   c_val_print,			/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline */
diff --git a/gdb/p-lang.c b/gdb/p-lang.c
index 33cb6e635d8..3229c3e9c9f 100644
--- a/gdb/p-lang.c
+++ b/gdb/p-lang.c
@@ -448,6 +448,7 @@  extern const struct language_defn pascal_language_defn =
   pascal_print_type,		/* Print a type using appropriate syntax */
   pascal_print_typedef,		/* Print a typedef using appropriate syntax */
   pascal_val_print,		/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   pascal_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline */
diff --git a/gdb/rust-lang.c b/gdb/rust-lang.c
index f9adb5d07cc..bacd351ef6c 100644
--- a/gdb/rust-lang.c
+++ b/gdb/rust-lang.c
@@ -2146,6 +2146,7 @@  extern const struct language_defn rust_language_defn =
   rust_print_type,		/* Print a type using appropriate syntax */
   rust_print_typedef,		/* Print a typedef using appropriate syntax */
   rust_val_print,		/* Print a value using appropriate syntax */
+  nullptr,			/* la_value_print_inner */
   c_value_print,		/* Print a top-level value */
   default_read_var_value,	/* la_read_var_value */
   NULL,				/* Language specific skip_trampoline */
diff --git a/gdb/valprint.c b/gdb/valprint.c
index 20763338aff..d595a1d54e6 100644
--- a/gdb/valprint.c
+++ b/gdb/valprint.c
@@ -1066,9 +1066,13 @@  do_val_print (struct value *full_value,
 
   try
     {
-      language->la_val_print (type, embedded_offset, address,
-			      stream, recurse, val,
-			      &local_opts);
+      if (full_value != nullptr && language->la_value_print_inner != nullptr)
+	language->la_value_print_inner (full_value, stream, recurse,
+					&local_opts);
+      else
+	language->la_val_print (type, embedded_offset, address,
+				stream, recurse, val,
+				&local_opts);
     }
   catch (const gdb_exception_error &except)
     {