/*==-- clang-c/Documentation.h - Utilities for comment processing -*- C -*-===*\
|* *|
|* Part of the LLVM Project, under the Apache License v2.0 with LLVM *|
|* Exceptions. *|
|* See https://llvm.org/LICENSE.txt for license information. *|
|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception *|
|* *|
|*===----------------------------------------------------------------------===*|
|* *|
|* This header provides a supplementary interface for inspecting *|
|* documentation comments. *|
|* *|
\*===----------------------------------------------------------------------===*/
#ifndef LLVM_CLANG_C_DOCUMENTATION_H
#define LLVM_CLANG_C_DOCUMENTATION_H
#include "clang-c/CXErrorCode.h"
#include "clang-c/ExternC.h"
#include "clang-c/Index.h"
LLVM_CLANG_C_EXTERN_C_BEGIN
/**
* \defgroup CINDEX_COMMENT Comment introspection
*
* The routines in this group provide access to information in documentation
* comments. These facilities are distinct from the core and may be subject to
* their own schedule of stability and deprecation.
*
* @{
*/
/**
* A parsed comment.
*/
typedef struct {
const void *ASTNode;
CXTranslationUnit TranslationUnit;
} CXComment;
/**
* Given a cursor that represents a documentable entity (e.g.,
* declaration), return the associated parsed comment as a
* \c CXComment_FullComment AST node.
*/
CINDEX_LINKAGE CXComment clang_Cursor_getParsedComment(CXCursor C);
/**
* Describes the type of the comment AST node (\c CXComment). A comment
* node can be considered block content (e. g., paragraph), inline content
* (plain text) or neither (the root AST node).
*/
enum CXCommentKind {
/**
* Null comment. No AST node is constructed at the requested location
* because there is no text or a syntax error.
*/
CXComment_Null = 0,
/**
* Plain text. Inline content.
*/
CXComment_Text = 1,
/**
* A command with word-like arguments that is considered inline content.
*
* For example: \\c command.
*/
CXComment_InlineCommand = 2,
/**
* HTML start tag with attributes (name-value pairs). Considered
* inline content.
*
* For example:
* \verbatim
* <br> <br /> <a href="http://example.org/">
* \endverbatim
*/
CXComment_HTMLStartTag = 3,
/**
* HTML end tag. Considered inline content.
*
* For example:
* \verbatim
* </a>
* \endverbatim
*/
CXComment_HTMLEndTag = 4,
/**
* A paragraph, contains inline comment. The paragraph itself is
* block content.
*/
CXComment_Paragraph = 5,
/**
* A command that has zero or more word-like arguments (number of
* word-like arguments depends on command name) and a paragraph as an
* argument. Block command is block content.
*
* Paragraph argument is also a child of the block command.
*
* For example: \has 0 word-like arguments and a paragraph argument.
*
* AST nodes of special kinds that parser knows about (e. g., \\param
* command) have their own node kinds.
*/
CXComment_BlockCommand = 6,
/**
* A \\param or \\arg command that describes the function parameter
* (name, passing direction, description).
*
* For example: \\param [in] ParamName description.
*/
CXComment_ParamCommand = 7,
/**
* A \\tparam command that describes a template parameter (name and
* description).
*
* For example: \\tparam T description.
*/
CXComment_TParamCommand = 8,
/**
* A verbatim block command (e. g., preformatted code). Verbatim
* block has an opening and a closing command and contains multiple lines of
* text (\c CXComment_VerbatimBlockLine child nodes).
*
* For example:
* \\verbatim
* aaa
* \\endverbatim
*/
CXComment_VerbatimBlockCommand = 9,
/**
* A line of text that is contained within a
* CXComment_VerbatimBlockCommand node.
*/
CXComment_VerbatimBlockLine = 10,
/**
* A verbatim line command. Verbatim line has an opening command,
* a single line of text (up to the newline after the opening command) and
* has no closing command.
*/
CXComment_VerbatimLine = 11,
/**
* A full comment attached to a declaration, contains block content.
*/
CXComment_FullComment = 12
};
/**
* The most appropriate rendering mode for an inline command, chosen on
* command semantics in Doxygen.
*/
enum CXCommentInlineCommandRenderKind {
/**
* Command argument should be rendered in a normal font.
*/
CXCommentInlineCommandRenderKind_Normal,
/**
* Command argument should be rendered in a bold font.
*/
CXCommentInlineCommandRenderKind_Bold,
/**
* Command argument should be rendered in a monospaced font.
*/
CXCommentInlineCommandRenderKind_Monospaced,
/**
* Command argument should be rendered emphasized (typically italic
* font).
*/
CXCommentInlineCommandRenderKind_Emphasized,
/**
* Command argument should not be rendered (since it only defines an anchor).
*/
CXCommentInlineCommandRenderKind_Anchor
};
/**
* Describes parameter passing direction for \\param or \\arg command.
*/
enum CXCommentParamPassDirection {
/**
* The parameter is an input parameter.
*/
CXCommentParamPassDirection_In,
/**
* The parameter is an output parameter.
*/
CXCommentParamPassDirection_Out,
/**
* The parameter is an input and output parameter.
*/
CXCommentParamPassDirection_InOut
};
/**
* \param Comment AST node of any kind.
*
* \returns the type of the AST node.
*/
CINDEX_LINKAGE enum CXCommentKind clang_Comment_getKind(CXComment Comment);
/**
* \param Comment AST node of any kind.
*
* \returns number of children of the AST node.
*/
CINDEX_LINKAGE unsigned clang_Comment_getNumChildren(CXComment Comment);
/**
* \param Comment AST node of any kind.
*
* \param ChildIdx child index (zero-based).
*
* \returns the specified child of the AST node.
*/
CINDEX_LINKAGE
CXComment clang_Comment_getChild(CXComment Comment, unsigned ChildIdx);
/**
* A \c CXComment_Paragraph node is considered whitespace if it contains
* only \c CXComment_Text nodes that are empty or whitespace.
*
* Other AST nodes (except \c CXComment_Paragraph and \c CXComment_Text) are
* never considered whitespace.
*
* \returns non-zero if \c Comment is whitespace.
*/
CINDEX_LINKAGE unsigned clang_Comment_isWhitespace(CXComment Comment);
/**
* \returns non-zero if \c Comment is inline content and has a newline
* immediately following it in the comment text. Newlines between paragraphs
* do not count.
*/
CINDEX_LINKAGE
unsigned clang_InlineContentComment_hasTrailingNewline(CXComment Comment);
/**
* \param Comment a \c CXComment_Text AST node.
*
* \returns text contained in the AST node.
*/
CINDEX_LINKAGE CXString clang_TextComment_getText(CXComment Comment);
/**
* \param Comment a \c CXComment_InlineCommand AST node.
*
* \returns name of the inline command.
*/
CINDEX_LINKAGE
CXString clang_InlineCommandComment_getCommandName(CXComment Comment);
/**
* \param Comment a \c CXComment_InlineCommand AST node.
*
* \returns the most appropriate rendering mode, chosen on command
* semantics in Doxygen.
*/
CINDEX_LINKAGE enum CXCommentInlineCommandRenderKind
clang_InlineCommandComment_getRenderKind(CXComment Comment);
/**
* \param Comment a \c CXComment_InlineCommand AST node.
*
* \returns number of command arguments.
*/
CINDEX_LINKAGE
unsigned clang_InlineCommandComment_getNumArgs(CXComment Comment);
/**
* \param Comment a \c CXComment_InlineCommand AST node.
*
* \param ArgIdx argument index (zero-based).
*
* \returns text of the specified argument.
*/
CINDEX_LINKAGE
CXString clang_InlineCommandComment_getArgText(CXComment Comment,
unsigned ArgIdx);
/**
* \param Comment a \c CXComment_HTMLStartTag or \c CXComment_HTMLEndTag AST
* node.
*
* \returns HTML tag name.
*/
CINDEX_LINKAGE CXString clang_HTMLTagComment_getTagName(CXComment Comment);
/**
* \param Comment a \c CXComment_HTMLStartTag AST node.
*
* \returns non-zero if tag is self-closing (for example, <br />).
*/
CINDEX_LINKAGE
unsigned clang_HTMLStartTagComment_isSelfClosing(CXComment Comment);
/**
* \param Comment a \c CXComment_HTMLStartTag AST node.
*
* \returns number of attributes (name-value pairs) attached to the start tag.
*/
CINDEX_LINKAGE unsigned clang_HTMLStartTag_getNumAttrs(CXComment Comment);
/**
* \param Comment a \c CXComment_HTMLStartTag AST node.
*
* \param AttrIdx attribute index (zero-based).
*
* \returns name of the specified attribute.
*/
CINDEX_LINKAGE
CXString clang_HTMLStartTag_getAttrName(CXComment Comment, unsigned AttrIdx);
/**
* \param Comment a \c CXComment_HTMLStartTag AST node.
*
* \param AttrIdx attribute index (zero-based).
*
* \returns value of the specified attribute.
*/
CINDEX_LINKAGE
CXString clang_HTMLStartTag_getAttrValue(CXComment Comment, unsigned AttrIdx);
/**
* \param Comment a \c CXComment_BlockCommand AST node.
*
* \returns name of the block command.
*/
CINDEX_LINKAGE
CXString clang_BlockCommandComment_getCommandName(CXComment Comment);
/**
* \param Comment a \c CXComment_BlockCommand AST node.
*
* \returns number of word-like arguments.
*/
CINDEX_LINKAGE
unsigned clang_BlockCommandComment_getNumArgs(CXComment Comment);
/**
* \param Comment a \c CXComment_BlockCommand AST node.
*
* \param ArgIdx argument index (zero-based).
*
* \returns text of the specified word-like argument.
*/
CINDEX_LINKAGE
CXString clang_BlockCommandComment_getArgText(CXComment Comment,
unsigned ArgIdx);
/**
* \param Comment a \c CXComment_BlockCommand or
* \c CXComment_VerbatimBlockCommand AST node.
*
* \returns paragraph argument of the block command.
*/
CINDEX_LINKAGE
CXComment clang_BlockCommandComment_getParagraph(CXComment Comment);
/**
* \param Comment a \c CXComment_ParamCommand AST node.
*
* \returns parameter name.
*/
CINDEX_LINKAGE
CXString clang_ParamCommandComment_getParamName(CXComment Comment);
/**
* \param Comment a \c CXComment_ParamCommand AST node.
*
* \returns non-zero if the parameter that this AST node represents was found
* in the function prototype and \c clang_ParamCommandComment_getParamIndex
* function will return a meaningful value.
*/
CINDEX_LINKAGE
unsigned clang_ParamCommandComment_isParamIndexValid(CXComment Comment);
/**
* \param Comment a \c CXComment_ParamCommand AST node.
*
* \returns zero-based parameter index in function prototype.
*/
CINDEX_LINKAGE
unsigned clang_ParamCommandComment_getParamIndex(CXComment Comment);
/**
* \param Comment a \c CXComment_ParamCommand AST node.
*
* \returns non-zero if parameter passing direction was specified explicitly in
* the comment.
*/
CINDEX_LINKAGE
unsigned clang_ParamCommandComment_isDirectionExplicit(CXComment Comment);
/**
* \param Comment a \c CXComment_ParamCommand AST node.
*
* \returns parameter passing direction.
*/
CINDEX_LINKAGE
enum CXCommentParamPassDirection clang_ParamCommandComment_getDirection(
CXComment Comment);
/**
* \param Comment a \c CXComment_TParamCommand AST node.
*
* \returns template parameter name.
*/
CINDEX_LINKAGE
CXString clang_TParamCommandComment_getParamName(CXComment Comment);
/**
* \param Comment a \c CXComment_TParamCommand AST node.
*
* \returns non-zero if the parameter that this AST node represents was found
* in the template parameter list and
* \c clang_TParamCommandComment_getDepth and
* \c clang_TParamCommandComment_getIndex functions will return a meaningful
* value.
*/
CINDEX_LINKAGE
unsigned clang_TParamCommandComment_isParamPositionValid(CXComment Comment);
/**
* \param Comment a \c CXComment_TParamCommand AST node.
*
* \returns zero-based nesting depth of this parameter in the template parameter list.
*
* For example,
* \verbatim
* template<typename C, template<typename T> class TT>
* void test(TT<int> aaa);
* \endverbatim
* for C and TT nesting depth is 0,
* for T nesting depth is 1.
*/
CINDEX_LINKAGE
unsigned clang_TParamCommandComment_getDepth(CXComment Comment);
/**
* \param Comment a \c CXComment_TParamCommand AST node.
*
* \returns zero-based parameter index in the template parameter list at a
* given nesting depth.
*
* For example,
* \verbatim
* template<typename C, template<typename T> class TT>
* void test(TT<int> aaa);
* \endverbatim
* for C and TT nesting depth is 0, so we can ask for index at depth 0:
* at depth 0 C's index is 0, TT's index is 1.
*
* For T nesting depth is 1, so we can ask for index at depth 0 and 1:
* at depth 0 T's index is 1 (same as TT's),
* at depth 1 T's index is 0.
*/
CINDEX_LINKAGE
unsigned clang_TParamCommandComment_getIndex(CXComment Comment, unsigned Depth);
/**
* \param Comment a \c CXComment_VerbatimBlockLine AST node.
*
* \returns text contained in the AST node.
*/
CINDEX_LINKAGE
CXString clang_VerbatimBlockLineComment_getText(CXComment Comment);
/**
* \param Comment a \c CXComment_VerbatimLine AST node.
*
* \returns text contained in the AST node.
*/
CINDEX_LINKAGE CXString clang_VerbatimLineComment_getText(CXComment Comment);
/**
* Convert an HTML tag AST node to string.
*
* \param Comment a \c CXComment_HTMLStartTag or \c CXComment_HTMLEndTag AST
* node.
*
* \returns string containing an HTML tag.
*/
CINDEX_LINKAGE CXString clang_HTMLTagComment_getAsString(CXComment Comment);
/**
* Convert a given full parsed comment to an HTML fragment.
*
* Specific details of HTML layout are subject to change. Don't try to parse
* this HTML back into an AST, use other APIs instead.
*
* Currently the following CSS classes are used:
* \li "para-brief" for \paragraph and equivalent commands;
* \li "para-returns" for \\returns paragraph and equivalent commands;
* \li "word-returns" for the "Returns" word in \\returns paragraph.
*
* Function argument documentation is rendered as a \<dl\> list with arguments
* sorted in function prototype order. CSS classes used:
* \li "param-name-index-NUMBER" for parameter name (\<dt\>);
* \li "param-descr-index-NUMBER" for parameter description (\<dd\>);
* \li "param-name-index-invalid" and "param-descr-index-invalid" are used if
* parameter index is invalid.
*
* Template parameter documentation is rendered as a \<dl\> list with
* parameters sorted in template parameter list order. CSS classes used:
* \li "tparam-name-index-NUMBER" for parameter name (\<dt\>);
* \li "tparam-descr-index-NUMBER" for parameter description (\<dd\>);
* \li "tparam-name-index-other" and "tparam-descr-index-other" are used for
* names inside template template parameters;
* \li "tparam-name-index-invalid" and "tparam-descr-index-invalid" are used if
* parameter position is invalid.
*
* \param Comment a \c CXComment_FullComment AST node.
*
* \returns string containing an HTML fragment.
*/
CINDEX_LINKAGE CXString clang_FullComment_getAsHTML(CXComment Comment);
/**
* Convert a given full parsed comment to an XML document.
*
* A Relax NG schema for the XML can be found in comment-xml-schema.rng file
* inside clang source tree.
*
* \param Comment a \c CXComment_FullComment AST node.
*
* \returns string containing an XML document.
*/
CINDEX_LINKAGE CXString clang_FullComment_getAsXML(CXComment Comment);
/**
* CXAPISet is an opaque type that represents a data structure containing all
* the API information for a given translation unit. This can be used for a
* single symbol symbol graph for a given symbol.
*/
typedef struct CXAPISetImpl *CXAPISet;
/**
* Traverses the translation unit to create a \c CXAPISet.
*
* \param tu is the \c CXTranslationUnit to build the \c CXAPISet for.
*
* \param out_api is a pointer to the output of this function. It is needs to be
* disposed of by calling clang_disposeAPISet.
*
* \returns Error code indicating success or failure of the APISet creation.
*/
CINDEX_LINKAGE enum CXErrorCode clang_createAPISet(CXTranslationUnit tu,
CXAPISet *out_api);
/**
* Dispose of an APISet.
*
* The provided \c CXAPISet can not be used after this function is called.
*/
CINDEX_LINKAGE void clang_disposeAPISet(CXAPISet api);
/**
* Generate a single symbol symbol graph for the given USR. Returns a null
* string if the associated symbol can not be found in the provided \c CXAPISet.
*
* The output contains the symbol graph as well as some additional information
* about related symbols.
*
* \param usr is a string containing the USR of the symbol to generate the
* symbol graph for.
*
* \param api the \c CXAPISet to look for the symbol in.
*
* \returns a string containing the serialized symbol graph representation for
* the symbol being queried or a null string if it can not be found in the
* APISet.
*/
CINDEX_LINKAGE CXString clang_getSymbolGraphForUSR(const char *usr,
CXAPISet api);
/**
* Generate a single symbol symbol graph for the declaration at the given
* cursor. Returns a null string if the AST node for the cursor isn't a
* declaration.
*
* The output contains the symbol graph as well as some additional information
* about related symbols.
*
* \param cursor the declaration for which to generate the single symbol symbol
* graph.
*
* \returns a string containing the serialized symbol graph representation for
* the symbol being queried or a null string if it can not be found in the
* APISet.
*/
CINDEX_LINKAGE CXString clang_getSymbolGraphForCursor(CXCursor cursor);
/**
* @}
*/
LLVM_CLANG_C_EXTERN_C_END
#endif /* CLANG_C_DOCUMENTATION_H */