Cxx: introduce "alias:" field for storing ALIAS in __attribute__((alias("ALIAS"))__

masatake · masatake · commit d48d1d5a7d9d · 2023-12-17T22:14:21.000+09:00
Signed-off-by: Masatake YAMATO &lt;yamato@redhat.com&gt;
diff --git a/Tmain/list-fields-with-prefix.d/stdout-expected.txt b/Tmain/list-fields-with-prefix.d/stdout-expected.txt
@@ -8,9 +8,11 @@ r       UCTAGSroles          no      NONE             s--    no    r- Roles
 x       UCTAGSxpath          no      NONE             s--    no    -- xpath for the tag
 -       UCTAGSproperties     yes     Asm              s--    no    -- properties (req, vararg for parameters)
 -       UCTAGSproperties     no      AutoIt           s--    no    -- properties (static, volatile, ...)
+-       UCTAGSalias          no      C                s--    no    -- the name of the alias target specified in __attribute__((alias(...)))
 -       UCTAGSmacrodef       no      C                s--    no    -- macro definition
 -       UCTAGSproperties     no      C                s--    no    -- properties (static, inline, mutable,...)
 -       UCTAGSsection        no      C                s--    no    -- the place where the object is placed
+-       UCTAGSalias          no      C++              s--    no    -- the name of the alias target specified in __attribute__((alias(...)))
 -       UCTAGScaptures       no      C++              s--    no    -- lambda capture list
 -       UCTAGSmacrodef       no      C++              s--    no    -- macro definition
 -       UCTAGSname           yes     C++              s--    no    -- aliased names
@@ -19,6 +21,7 @@ x       UCTAGSxpath          no      NONE             s--    no    -- xpath for
 -       UCTAGSspecialization no      C++              s--    no    -- template specialization parameters
 -       UCTAGStemplate       no      C++              s--    no    -- template parameters
 -       UCTAGSmacrodef       no      CPreProcessor    s--    no    -- macro definition
+-       UCTAGSalias          no      CUDA             s--    no    -- the name of the alias target specified in __attribute__((alias(...)))
 -       UCTAGSmacrodef       no      CUDA             s--    no    -- macro definition
 -       UCTAGSproperties     no      CUDA             s--    no    -- properties (static, inline, mutable,...)
 -       UCTAGSsection        no      CUDA             s--    no    -- the place where the object is placed
diff --git a/Tmain/list-fields.d/stdout-expected.txt b/Tmain/list-fields.d/stdout-expected.txt
@@ -26,9 +26,11 @@ x	xpath	no	NONE	s--	no	--	xpath for the tag
 z	kind	no	NONE	s--	no	r-	[tags output] prepend "kind:" to k/ (or K/) field output, [xref and json output] kind in long-name form
 -	properties	yes	Asm	s--	no	--	properties (req, vararg for parameters)
 -	properties	no	AutoIt	s--	no	--	properties (static, volatile, ...)
+-	alias	no	C	s--	no	--	the name of the alias target specified in __attribute__((alias(...)))
 -	macrodef	no	C	s--	no	--	macro definition
 -	properties	no	C	s--	no	--	properties (static, inline, mutable,...)
 -	section	no	C	s--	no	--	the place where the object is placed
+-	alias	no	C++	s--	no	--	the name of the alias target specified in __attribute__((alias(...)))
 -	captures	no	C++	s--	no	--	lambda capture list
 -	macrodef	no	C++	s--	no	--	macro definition
 -	name	yes	C++	s--	no	--	aliased names
@@ -37,6 +39,7 @@ z	kind	no	NONE	s--	no	r-	[tags output] prepend "kind:" to k/ (or K/) field outpu
 -	specialization	no	C++	s--	no	--	template specialization parameters
 -	template	no	C++	s--	no	--	template parameters
 -	macrodef	no	CPreProcessor	s--	no	--	macro definition
+-	alias	no	CUDA	s--	no	--	the name of the alias target specified in __attribute__((alias(...)))
 -	macrodef	no	CUDA	s--	no	--	macro definition
 -	properties	no	CUDA	s--	no	--	properties (static, inline, mutable,...)
 -	section	no	CUDA	s--	no	--	the place where the object is placed
diff --git a/Units/parser-cxx.r/attribute-alias.cpp.d/args.ctags b/Units/parser-cxx.r/attribute-alias.cpp.d/args.ctags
@@ -0,0 +1,2 @@
+--sort=no
+--fields-C=+{alias}
diff --git a/Units/parser-cxx.r/attribute-alias.cpp.d/expected.tags b/Units/parser-cxx.r/attribute-alias.cpp.d/expected.tags
@@ -0,0 +1 @@
+x	input.c	/^int x __attribute__((alias("y")));$/;"	v	typeref:typename:int	alias:y
diff --git a/Units/parser-cxx.r/attribute-alias.cpp.d/input.c b/Units/parser-cxx.r/attribute-alias.cpp.d/input.c
@@ -0,0 +1 @@
+int x __attribute__((alias("y")));
diff --git a/docs/man/ctags-lang-c++.7.rst b/docs/man/ctags-lang-c++.7.rst
@@ -32,6 +32,8 @@ Change since "0.0"
 
 * New field ``section``
 
+* New field ``alias``
+
 SEE ALSO
 --------
 :ref:`ctags(1) <ctags(1)>`,
diff --git a/docs/man/ctags-lang-c.7.rst b/docs/man/ctags-lang-c.7.rst
@@ -32,6 +32,8 @@ Change since "0.0"
 
 * New field ``section``
 
+* New field ``alias``
+
 SEE ALSO
 --------
 :ref:`ctags(1) <ctags(1)>`,
diff --git a/docs/man/ctags-lang-cuda.7.rst b/docs/man/ctags-lang-cuda.7.rst
@@ -29,6 +29,8 @@ Change since "0.0"
 
 * New field ``section``
 
+* New field ``alias``
+
 SEE ALSO
 --------
 :ref:`ctags(1) <ctags(1)>`,
diff --git a/docs/news/HEAD.rst b/docs/news/HEAD.rst
@@ -66,14 +66,20 @@ Changes about parser specific kinds, roles, fields, and extras
 
   + New filed `section`
 
+  + New field `alias`
+
 * C++
 
   + New filed `section`
 
+  + New field `alias`
+
 * CUDA
 
   + New field `section`
 
+  + New field `alias`
+
 * Fortran
 
   + New extra `linkName`.
diff --git a/man/ctags-lang-c++.7.rst.in b/man/ctags-lang-c++.7.rst.in
@@ -32,6 +32,8 @@ Change since "0.0"
 
 * New field ``section``
 
+* New field ``alias``
+
 SEE ALSO
 --------
 ctags(1),
diff --git a/man/ctags-lang-c.7.rst.in b/man/ctags-lang-c.7.rst.in
@@ -32,6 +32,8 @@ Change since "0.0"
 
 * New field ``section``
 
+* New field ``alias``
+
 SEE ALSO
 --------
 ctags(1),
diff --git a/man/ctags-lang-cuda.7.rst.in b/man/ctags-lang-cuda.7.rst.in
@@ -29,6 +29,8 @@ Change since "0.0"
 
 * New field ``section``
 
+* New field ``alias``
+
 SEE ALSO
 --------
 ctags(1),
diff --git a/parsers/cxx/cxx_side_chain.c b/parsers/cxx/cxx_side_chain.c
@@ -82,14 +82,35 @@ static void cxxScanAttrExtractSection(const CXXToken * pToken)
 	vStringPut(pArgToken->pszWord, '"');
 }
 
+static void cxxScanAttrExtractAlias(const CXXToken * pToken)
+{
+	const CXXToken *pArgToken = cxxExtractFirstArgumentInAttrs(pToken);
+	if(pArgToken == NULL)
+		return;
+
+	Assert(vStringLength(pArgToken->pszWord));
+
+	// Remve doubule quote characters surrounding the constant string.
+	vStringChop(pArgToken->pszWord);
+	cxxTagSetField(CXXTagFieldAlias, vStringValue(pArgToken->pszWord)+1, true);
+
+	vStringPut(pArgToken->pszWord, '"');
+}
+
 static void cxxScanAttributes(const CXXTokenChain * pAttrChain)
 {
 	if(pAttrChain == NULL)
 		return;
 
 	CXXToken * t = pAttrChain->pHead;
-	bool bSection = cxxTagFieldEnabled(CXXTagFieldSection)
-		&& (cxxParserCurrentLanguageIsC() || cxxParserCurrentLanguageIsCPP());
+	bool bSection = false;
+	bool bAlias = false;
+
+	if((cxxParserCurrentLanguageIsC() || cxxParserCurrentLanguageIsCPP()))
+	{
+		bSection = cxxTagFieldEnabled(CXXTagFieldSection);
+		bAlias = cxxTagFieldEnabled(CXXTagFieldAlias);
+	}
 
 	while(t)
 	{
@@ -104,6 +125,12 @@ static void cxxScanAttributes(const CXXTokenChain * pAttrChain)
 				if(s)
 					cxxScanAttrExtractSection(s);
 			}
+			if(bAlias)
+			{
+				CXXToken * s = cxxTokenChainNextIdentifier(t->pChain->pHead, "alias");
+				if(s)
+					cxxScanAttrExtractAlias(s);
+			}
 		}
 		if(t == pAttrChain->pTail)
 			break;
diff --git a/parsers/cxx/cxx_tag.c b/parsers/cxx/cxx_tag.c
@@ -122,6 +122,10 @@ static const char * g_aCXXAccessStrings [] = {
 		.name = "section", \
 		.description = "the place where the object is placed", \
 		.enabled = false \
+	}, { \
+		.name = "alias", \
+		.description = "the name of the alias target specified in __attribute__((alias(...)))", \
+		.enabled = false \
 	}
 
 static fieldDefinition g_aCXXCFields [] = {
diff --git a/parsers/cxx/cxx_tag.h b/parsers/cxx/cxx_tag.h
@@ -56,6 +56,7 @@ enum CXXTagCommonField
 	CXXTagFieldProperties,
 	CXXTagFieldMacrodef,
 	CXXTagFieldSection,
+	CXXTagFieldAlias,
 
 	CXXTagCommonFieldCount
 };

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+x input.c /^int x __attribute__((alias("y")));$/;" v typeref:typename:int alias:y`