| /*===-- clang-c/Index.h - Indexing Public C Interface -------------*- C -*-===*\ |
| |* *| |
| |* The LLVM Compiler Infrastructure *| |
| |* *| |
| |* This file is distributed under the University of Illinois Open Source *| |
| |* License. See LICENSE.TXT for details. *| |
| |* *| |
| |*===----------------------------------------------------------------------===*| |
| |* *| |
| |* This header provides a public inferface to a Clang library for extracting *| |
| |* high-level symbol information from source files without exposing the full *| |
| |* Clang C++ API. *| |
| |* *| |
| \*===----------------------------------------------------------------------===*/ |
| |
| #ifndef CLANG_C_INDEX_H |
| #define CLANG_C_INDEX_H |
| |
| #include <sys/stat.h> |
| #include <time.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* MSVC DLL import/export. */ |
| #ifdef _MSC_VER |
| #ifdef _CINDEX_LIB_ |
| #define CINDEX_LINKAGE __declspec(dllexport) |
| #else |
| #define CINDEX_LINKAGE __declspec(dllimport) |
| #endif |
| #else |
| #define CINDEX_LINKAGE |
| #endif |
| |
| /** \defgroup CINDEX C Interface to Clang |
| * |
| * Clang indeX abstractions. The backing store for the following |
| * API's will be clangs AST file (currently based on PCH). AST files |
| * are created as follows: |
| * |
| * \code |
| * clang -emit-ast <sourcefile.langsuffix> -o <sourcefile.ast>". |
| * \endcode |
| * |
| * Naming Conventions: To avoid namespace pollution, data types are |
| * prefixed with "CX" and functions are prefixed with "clang_". |
| * |
| * @{ |
| */ |
| typedef void *CXIndex; /* An indexing instance. */ |
| |
| typedef void *CXTranslationUnit; /* A translation unit instance. */ |
| |
| typedef void *CXFile; /* A source file */ |
| typedef void *CXDecl; /* A specific declaration within a translation unit. */ |
| typedef void *CXStmt; /* A specific statement within a function/method */ |
| |
| /* Cursors represent declarations, definitions, and references. */ |
| enum CXCursorKind { |
| /* Declarations */ |
| CXCursor_FirstDecl = 1, |
| /** |
| * \brief A declaration whose specific kind is not exposed via this |
| * interface. |
| * |
| * Unexposed declarations have the same operations as any other kind |
| * of declaration; one can extract their location information, |
| * spelling, find their definitions, etc. However, the specific kind |
| * of the declaration is not reported. |
| */ |
| CXCursor_UnexposedDecl = 1, |
| /** \brief A C or C++ struct. */ |
| CXCursor_StructDecl = 2, |
| /** \brief A C or C++ union. */ |
| CXCursor_UnionDecl = 3, |
| /** \brief A C++ class. */ |
| CXCursor_ClassDecl = 4, |
| /** \brief An enumeration. */ |
| CXCursor_EnumDecl = 5, |
| /** |
| * \brief A field (in C) or non-static data member (in C++) in a |
| * struct, union, or C++ class. |
| */ |
| CXCursor_FieldDecl = 6, |
| /** \brief An enumerator constant. */ |
| CXCursor_EnumConstantDecl = 7, |
| /** \brief A function. */ |
| CXCursor_FunctionDecl = 8, |
| /** \brief A variable. */ |
| CXCursor_VarDecl = 9, |
| /** \brief A function or method parameter. */ |
| CXCursor_ParmDecl = 10, |
| /** \brief An Objective-C @interface. */ |
| CXCursor_ObjCInterfaceDecl = 11, |
| /** \brief An Objective-C @interface for a category. */ |
| CXCursor_ObjCCategoryDecl = 12, |
| /** \brief An Objective-C @protocol declaration. */ |
| CXCursor_ObjCProtocolDecl = 13, |
| /** \brief An Objective-C @property declaration. */ |
| CXCursor_ObjCPropertyDecl = 14, |
| /** \brief An Objective-C instance variable. */ |
| CXCursor_ObjCIvarDecl = 15, |
| /** \brief An Objective-C instance method. */ |
| CXCursor_ObjCInstanceMethodDecl = 16, |
| /** \brief An Objective-C class method. */ |
| CXCursor_ObjCClassMethodDecl = 17, |
| /** \brief An Objective-C @implementation. */ |
| CXCursor_ObjCImplementationDecl = 18, |
| /** \brief An Objective-C @implementation for a category. */ |
| CXCursor_ObjCCategoryImplDecl = 19, |
| /** \brief A typedef */ |
| CXCursor_TypedefDecl = 20, |
| CXCursor_LastDecl = 20, |
| |
| /* References */ |
| CXCursor_FirstRef = 40, /* Decl references */ |
| CXCursor_ObjCSuperClassRef = 40, |
| CXCursor_ObjCProtocolRef = 41, |
| CXCursor_ObjCClassRef = 42, |
| CXCursor_LastRef = 42, |
| |
| /* Error conditions */ |
| CXCursor_FirstInvalid = 70, |
| CXCursor_InvalidFile = 70, |
| CXCursor_NoDeclFound = 71, |
| CXCursor_NotImplemented = 72, |
| CXCursor_LastInvalid = 72, |
| |
| /* Expressions */ |
| CXCursor_FirstExpr = 100, |
| |
| /** |
| * \brief An expression whose specific kind is not exposed via this |
| * interface. |
| * |
| * Unexposed expressions have the same operations as any other kind |
| * of expression; one can extract their location information, |
| * spelling, children, etc. However, the specific kind of the |
| * expression is not reported. |
| */ |
| CXCursor_UnexposedExpr = 100, |
| |
| /** |
| * \brief An expression that refers to some value declaration, such |
| * as a function, varible, or enumerator. |
| */ |
| CXCursor_DeclRefExpr = 101, |
| |
| /** |
| * \brief An expression that refers to a member of a struct, union, |
| * class, Objective-C class, etc. |
| */ |
| CXCursor_MemberRefExpr = 102, |
| |
| /** \brief An expression that calls a function. */ |
| CXCursor_CallExpr = 103, |
| |
| /** \brief An expression that sends a message to an Objective-C |
| object or class. */ |
| CXCursor_ObjCMessageExpr = 104, |
| CXCursor_LastExpr = 104, |
| |
| /* Statements */ |
| CXCursor_FirstStmt = 200, |
| /** |
| * \brief A statement whose specific kind is not exposed via this |
| * interface. |
| * |
| * Unexposed statements have the same operations as any other kind of |
| * statement; one can extract their location information, spelling, |
| * children, etc. However, the specific kind of the statement is not |
| * reported. |
| */ |
| CXCursor_UnexposedStmt = 200, |
| CXCursor_LastStmt = 200, |
| |
| /** |
| * \brief Cursor that represents the translation unit itself. |
| * |
| * The translation unit cursor exists primarily to act as the root |
| * cursor for traversing the contents of a translation unit. |
| */ |
| CXCursor_TranslationUnit = 300 |
| }; |
| |
| /** |
| * \brief Provides the contents of a file that has not yet been saved to disk. |
| * |
| * Each CXUnsavedFile instance provides the name of a file on the |
| * system along with the current contents of that file that have not |
| * yet been saved to disk. |
| */ |
| struct CXUnsavedFile { |
| /** |
| * \brief The file whose contents have not yet been saved. |
| * |
| * This file must already exist in the file system. |
| */ |
| const char *Filename; |
| |
| /** |
| * \brief A null-terminated buffer containing the unsaved contents |
| * of this file. |
| */ |
| const char *Contents; |
| |
| /** |
| * \brief The length of the unsaved contents of this buffer, not |
| * counting the NULL at the end of the buffer. |
| */ |
| unsigned long Length; |
| }; |
| |
| /* A cursor into the CXTranslationUnit. */ |
| |
| typedef struct { |
| enum CXCursorKind kind; |
| void *data[3]; |
| } CXCursor; |
| |
| /* A unique token for looking up "visible" CXDecls from a CXTranslationUnit. */ |
| typedef struct { |
| CXIndex index; |
| void *data; |
| } CXEntity; |
| |
| /** |
| * For functions returning a string that might or might not need |
| * to be internally allocated and freed. |
| * Use clang_getCString to access the C string value. |
| * Use clang_disposeString to free the value. |
| * Treat it as an opaque type. |
| */ |
| typedef struct { |
| const char *Spelling; |
| /* A 1 value indicates the clang_ indexing API needed to allocate the string |
| (and it must be freed by clang_disposeString()). */ |
| int MustFreeString; |
| } CXString; |
| |
| /* Get C string pointer from a CXString. */ |
| CINDEX_LINKAGE const char *clang_getCString(CXString string); |
| |
| /* Free CXString. */ |
| CINDEX_LINKAGE void clang_disposeString(CXString string); |
| |
| /** |
| * \brief clang_createIndex() provides a shared context for creating |
| * translation units. It provides two options: |
| * |
| * - excludeDeclarationsFromPCH: When non-zero, allows enumeration of "local" |
| * declarations (when loading any new translation units). A "local" declaration |
| * is one that belongs in the translation unit itself and not in a precompiled |
| * header that was used by the translation unit. If zero, all declarations |
| * will be enumerated. |
| * |
| * - displayDiagnostics: when non-zero, diagnostics will be output. If zero, |
| * diagnostics will be ignored. |
| * |
| * Here is an example: |
| * |
| * // excludeDeclsFromPCH = 1, displayDiagnostics = 1 |
| * Idx = clang_createIndex(1, 1); |
| * |
| * // IndexTest.pch was produced with the following command: |
| * // "clang -x c IndexTest.h -emit-ast -o IndexTest.pch" |
| * TU = clang_createTranslationUnit(Idx, "IndexTest.pch"); |
| * |
| * // This will load all the symbols from 'IndexTest.pch' |
| * clang_loadTranslationUnit(TU, TranslationUnitVisitor, 0); |
| * clang_disposeTranslationUnit(TU); |
| * |
| * // This will load all the symbols from 'IndexTest.c', excluding symbols |
| * // from 'IndexTest.pch'. |
| * char *args[] = { "-Xclang", "-include-pch=IndexTest.pch", 0 }; |
| * TU = clang_createTranslationUnitFromSourceFile(Idx, "IndexTest.c", 2, args); |
| * clang_loadTranslationUnit(TU, TranslationUnitVisitor, 0); |
| * clang_disposeTranslationUnit(TU); |
| * |
| * This process of creating the 'pch', loading it separately, and using it (via |
| * -include-pch) allows 'excludeDeclsFromPCH' to remove redundant callbacks |
| * (which gives the indexer the same performance benefit as the compiler). |
| */ |
| CINDEX_LINKAGE CXIndex clang_createIndex(int excludeDeclarationsFromPCH, |
| int displayDiagnostics); |
| CINDEX_LINKAGE void clang_disposeIndex(CXIndex index); |
| CINDEX_LINKAGE CXString |
| clang_getTranslationUnitSpelling(CXTranslationUnit CTUnit); |
| |
| /* |
| * \brief Request that AST's be generated external for API calls which parse |
| * source code on the fly, e.g. \see createTranslationUnitFromSourceFile. |
| * |
| * Note: This is for debugging purposes only, and may be removed at a later |
| * date. |
| * |
| * \param index - The index to update. |
| * \param value - The new flag value. |
| */ |
| CINDEX_LINKAGE void clang_setUseExternalASTGeneration(CXIndex index, |
| int value); |
| |
| /* |
| * \brief Create a translation unit from an AST file (-emit-ast). |
| */ |
| CINDEX_LINKAGE CXTranslationUnit clang_createTranslationUnit( |
| CXIndex, const char *ast_filename |
| ); |
| |
| /** |
| * \brief Destroy the specified CXTranslationUnit object. |
| */ |
| CINDEX_LINKAGE void clang_disposeTranslationUnit(CXTranslationUnit); |
| |
| /** |
| * \brief Return the CXTranslationUnit for a given source file and the provided |
| * command line arguments one would pass to the compiler. |
| * |
| * Note: The 'source_filename' argument is optional. If the caller provides a |
| * NULL pointer, the name of the source file is expected to reside in the |
| * specified command line arguments. |
| * |
| * Note: When encountered in 'clang_command_line_args', the following options |
| * are ignored: |
| * |
| * '-c' |
| * '-emit-ast' |
| * '-fsyntax-only' |
| * '-o <output file>' (both '-o' and '<output file>' are ignored) |
| * |
| * |
| * \param source_filename - The name of the source file to load, or NULL if the |
| * source file is included in clang_command_line_args. |
| */ |
| CINDEX_LINKAGE CXTranslationUnit clang_createTranslationUnitFromSourceFile( |
| CXIndex CIdx, |
| const char *source_filename, |
| int num_clang_command_line_args, |
| const char **clang_command_line_args |
| ); |
| |
| /* |
| Usage: clang_loadTranslationUnit(). Will load the toplevel declarations |
| within a translation unit, issuing a 'callback' for each one. |
| |
| void printObjCInterfaceNames(CXTranslationUnit X, CXCursor C) { |
| if (clang_getCursorKind(C) == Cursor_Declaration) { |
| CXDecl D = clang_getCursorDecl(C); |
| if (clang_getDeclKind(D) == CXDecl_ObjC_interface) |
| printf("@interface %s in file %s on line %d column %d\n", |
| clang_getDeclSpelling(D), clang_getCursorSource(C), |
| clang_getCursorLine(C), clang_getCursorColumn(C)); |
| } |
| } |
| static void usage { |
| clang_loadTranslationUnit(CXTranslationUnit, printObjCInterfaceNames); |
| } |
| */ |
| typedef void *CXClientData; |
| typedef void (*CXTranslationUnitIterator)(CXTranslationUnit, CXCursor, |
| CXClientData); |
| CINDEX_LINKAGE void clang_loadTranslationUnit(CXTranslationUnit, |
| CXTranslationUnitIterator, |
| CXClientData); |
| |
| /* |
| Usage: clang_loadDeclaration(). Will load the declaration, issuing a |
| 'callback' for each declaration/reference within the respective declaration. |
| |
| For interface declarations, this will index the super class, protocols, |
| ivars, methods, etc. For structure declarations, this will index the fields. |
| For functions, this will index the parameters (and body, for function |
| definitions), local declarations/references. |
| |
| void getInterfaceDetails(CXDecl X, CXCursor C) { |
| switch (clang_getCursorKind(C)) { |
| case Cursor_ObjC_ClassRef: |
| CXDecl SuperClass = clang_getCursorDecl(C); |
| case Cursor_ObjC_ProtocolRef: |
| CXDecl AdoptsProtocol = clang_getCursorDecl(C); |
| case Cursor_Declaration: |
| CXDecl AnIvarOrMethod = clang_getCursorDecl(C); |
| } |
| } |
| static void usage() { |
| if (clang_getDeclKind(D) == CXDecl_ObjC_interface) { |
| clang_loadDeclaration(D, getInterfaceDetails); |
| } |
| } |
| */ |
| typedef void (*CXDeclIterator)(CXDecl, CXCursor, CXClientData); |
| |
| CINDEX_LINKAGE void clang_loadDeclaration(CXDecl, CXDeclIterator, CXClientData); |
| |
| /** |
| * \brief Retrieve the cursor that represents the given translation unit. |
| * |
| * The translation unit cursor can be used to start traversing the |
| * various declarations within the given translation unit. |
| */ |
| CINDEX_LINKAGE CXCursor clang_getTranslationUnitCursor(CXTranslationUnit); |
| |
| /* |
| * CXFile Operations. |
| */ |
| CINDEX_LINKAGE const char *clang_getFileName(CXFile SFile); |
| CINDEX_LINKAGE time_t clang_getFileTime(CXFile SFile); |
| |
| /* |
| * CXEntity Operations. |
| */ |
| |
| /* clang_getDeclaration() maps from a CXEntity to the matching CXDecl (if any) |
| * in a specified translation unit. */ |
| CINDEX_LINKAGE CXDecl clang_getDeclaration(CXEntity, CXTranslationUnit); |
| |
| /* |
| * CXDecl Operations. |
| */ |
| CINDEX_LINKAGE CXCursor clang_getCursorFromDecl(CXDecl); |
| CINDEX_LINKAGE CXEntity clang_getEntityFromDecl(CXIndex, CXDecl); |
| CINDEX_LINKAGE CXString clang_getDeclSpelling(CXDecl); |
| |
| /** |
| * \brief Identifies a specific source location within a translation |
| * unit. |
| * |
| * Use clang_getInstantiationLocation() to map a source location to a |
| * particular file, line, and column. |
| */ |
| typedef struct { |
| void *ptr_data; |
| unsigned int_data; |
| } CXSourceLocation; |
| |
| /** |
| * \brief Identifies a range of source locations in the source code. |
| * |
| * Use clang_getRangeStart() and clang_getRangeEnd() to retrieve the |
| * starting and end locations from a source range, respectively. |
| */ |
| typedef struct { |
| void *ptr_data; |
| unsigned begin_int_data; |
| unsigned end_int_data; |
| } CXSourceRange; |
| |
| /** |
| * \brief Retrieve the file, line, and column represented by the |
| * given source location. |
| * |
| * \param location the location within a source file that will be |
| * decomposed into its parts. |
| * |
| * \param file if non-NULL, will be set to the file to which the given |
| * source location points. |
| * |
| * \param line if non-NULL, will be set to the line to which the given |
| * source location points. |
| * |
| * \param column if non-NULL, will be set to the column to which the |
| * given source location points. |
| */ |
| CINDEX_LINKAGE void clang_getInstantiationLocation(CXSourceLocation location, |
| CXFile *file, |
| unsigned *line, |
| unsigned *column); |
| |
| /** |
| * \brief Retrieve a source location representing the first |
| * character within a source range. |
| */ |
| CINDEX_LINKAGE CXSourceLocation clang_getRangeStart(CXSourceRange range); |
| |
| /** |
| * \brief Retrieve a source location representing the last |
| * character within a source range. |
| */ |
| CINDEX_LINKAGE CXSourceLocation clang_getRangeEnd(CXSourceRange range); |
| |
| /* |
| * CXCursor Operations. |
| */ |
| /** |
| Usage: clang_getCursor() will translate a source/line/column position |
| into an AST cursor (to derive semantic information from the source code). |
| */ |
| CINDEX_LINKAGE CXCursor clang_getCursor(CXTranslationUnit, |
| const char *source_name, |
| unsigned line, unsigned column); |
| |
| CINDEX_LINKAGE CXCursor clang_getNullCursor(void); |
| |
| /* clang_getCursorUSR() returns the USR (if any) associated with entity referred to by the |
| * provided CXCursor object. */ |
| CINDEX_LINKAGE CXString clang_getCursorUSR(CXCursor); |
| |
| CINDEX_LINKAGE enum CXCursorKind clang_getCursorKind(CXCursor); |
| CINDEX_LINKAGE unsigned clang_isDeclaration(enum CXCursorKind); |
| CINDEX_LINKAGE unsigned clang_isReference(enum CXCursorKind); |
| CINDEX_LINKAGE unsigned clang_isExpression(enum CXCursorKind); |
| CINDEX_LINKAGE unsigned clang_isStatement(enum CXCursorKind); |
| CINDEX_LINKAGE unsigned clang_isInvalid(enum CXCursorKind); |
| CINDEX_LINKAGE unsigned clang_isTranslationUnit(enum CXCursorKind); |
| CINDEX_LINKAGE unsigned clang_equalCursors(CXCursor, CXCursor); |
| |
| CINDEX_LINKAGE CXString clang_getCursorSpelling(CXCursor); |
| |
| /** |
| * \brief Retrieve the physical location of the source constructor referenced |
| * by the given cursor. |
| * |
| * The location of a declaration is typically the location of the name of that |
| * declaration, where the name of that declaration would occur if it is |
| * unnamed, or some keyword that introduces that particular declaration. |
| * The location of a reference is where that reference occurs within the |
| * source code. |
| */ |
| CINDEX_LINKAGE CXSourceLocation clang_getCursorLocation(CXCursor); |
| |
| /** |
| * \brief Retrieve the physical extent of the source construct referenced by |
| * the given cursor. |
| * |
| * The extent of a cursor starts with the file/line/column pointing at the |
| * first character within the source construct that the cursor refers to and |
| * ends with the last character withinin that source construct. For a |
| * declaration, the extent covers the declaration itself. For a reference, |
| * the extent covers the location of the reference (e.g., where the referenced |
| * entity was actually used). |
| */ |
| CINDEX_LINKAGE CXSourceRange clang_getCursorExtent(CXCursor); |
| |
| /** \brief For a cursor that is a reference, retrieve a cursor representing the |
| * entity that it references. |
| * |
| * Reference cursors refer to other entities in the AST. For example, an |
| * Objective-C superclass reference cursor refers to an Objective-C class. |
| * This function produces the cursor for the Objective-C class from the |
| * cursor for the superclass reference. If the input cursor is a declaration or |
| * definition, it returns that declaration or definition unchanged. |
| * Othewise, returns the NULL cursor. |
| */ |
| CINDEX_LINKAGE CXCursor clang_getCursorReferenced(CXCursor); |
| |
| /** |
| * \brief For a cursor that is either a reference to or a declaration |
| * of some entity, retrieve a cursor that describes the definition of |
| * that entity. |
| * |
| * Some entities can be declared multiple times within a translation |
| * unit, but only one of those declarations can also be a |
| * definition. For example, given: |
| * |
| * \code |
| * int f(int, int); |
| * int g(int x, int y) { return f(x, y); } |
| * int f(int a, int b) { return a + b; } |
| * int f(int, int); |
| * \endcode |
| * |
| * there are three declarations of the function "f", but only the |
| * second one is a definition. The clang_getCursorDefinition() |
| * function will take any cursor pointing to a declaration of "f" |
| * (the first or fourth lines of the example) or a cursor referenced |
| * that uses "f" (the call to "f' inside "g") and will return a |
| * declaration cursor pointing to the definition (the second "f" |
| * declaration). |
| * |
| * If given a cursor for which there is no corresponding definition, |
| * e.g., because there is no definition of that entity within this |
| * translation unit, returns a NULL cursor. |
| */ |
| CINDEX_LINKAGE CXCursor clang_getCursorDefinition(CXCursor); |
| |
| /** |
| * \brief Determine whether the declaration pointed to by this cursor |
| * is also a definition of that entity. |
| */ |
| CINDEX_LINKAGE unsigned clang_isCursorDefinition(CXCursor); |
| |
| /* for debug/testing */ |
| CINDEX_LINKAGE const char *clang_getCursorKindSpelling(enum CXCursorKind Kind); |
| CINDEX_LINKAGE void clang_getDefinitionSpellingAndExtent(CXCursor, |
| const char **startBuf, |
| const char **endBuf, |
| unsigned *startLine, |
| unsigned *startColumn, |
| unsigned *endLine, |
| unsigned *endColumn); |
| |
| /* |
| * If CXCursorKind == Cursor_Reference, then this will return the referenced |
| * declaration. |
| * If CXCursorKind == Cursor_Declaration, then this will return the declaration. |
| */ |
| CINDEX_LINKAGE CXDecl clang_getCursorDecl(CXCursor); |
| |
| /** |
| * \brief A semantic string that describes a code-completion result. |
| * |
| * A semantic string that describes the formatting of a code-completion |
| * result as a single "template" of text that should be inserted into the |
| * source buffer when a particular code-completion result is selected. |
| * Each semantic string is made up of some number of "chunks", each of which |
| * contains some text along with a description of what that text means, e.g., |
| * the name of the entity being referenced, whether the text chunk is part of |
| * the template, or whether it is a "placeholder" that the user should replace |
| * with actual code,of a specific kind. See \c CXCompletionChunkKind for a |
| * description of the different kinds of chunks. |
| */ |
| typedef void *CXCompletionString; |
| |
| /** |
| * \brief A single result of code completion. |
| */ |
| typedef struct { |
| /** |
| * \brief The kind of entity that this completion refers to. |
| * |
| * The cursor kind will be a macro, keyword, or a declaration (one of the |
| * *Decl cursor kinds), describing the entity that the completion is |
| * referring to. |
| * |
| * \todo In the future, we would like to provide a full cursor, to allow |
| * the client to extract additional information from declaration. |
| */ |
| enum CXCursorKind CursorKind; |
| |
| /** |
| * \brief The code-completion string that describes how to insert this |
| * code-completion result into the editing buffer. |
| */ |
| CXCompletionString CompletionString; |
| } CXCompletionResult; |
| |
| /** |
| * \brief Describes a single piece of text within a code-completion string. |
| * |
| * Each "chunk" within a code-completion string (\c CXCompletionString) is |
| * either a piece of text with a specific "kind" that describes how that text |
| * should be interpreted by the client or is another completion string. |
| */ |
| enum CXCompletionChunkKind { |
| /** |
| * \brief A code-completion string that describes "optional" text that |
| * could be a part of the template (but is not required). |
| * |
| * The Optional chunk is the only kind of chunk that has a code-completion |
| * string for its representation, which is accessible via |
| * \c clang_getCompletionChunkCompletionString(). The code-completion string |
| * describes an additional part of the template that is completely optional. |
| * For example, optional chunks can be used to describe the placeholders for |
| * arguments that match up with defaulted function parameters, e.g. given: |
| * |
| * \code |
| * void f(int x, float y = 3.14, double z = 2.71828); |
| * \endcode |
| * |
| * The code-completion string for this function would contain: |
| * - a TypedText chunk for "f". |
| * - a LeftParen chunk for "(". |
| * - a Placeholder chunk for "int x" |
| * - an Optional chunk containing the remaining defaulted arguments, e.g., |
| * - a Comma chunk for "," |
| * - a Placeholder chunk for "float x" |
| * - an Optional chunk containing the last defaulted argument: |
| * - a Comma chunk for "," |
| * - a Placeholder chunk for "double z" |
| * - a RightParen chunk for ")" |
| * |
| * There are many ways two handle Optional chunks. Two simple approaches are: |
| * - Completely ignore optional chunks, in which case the template for the |
| * function "f" would only include the first parameter ("int x"). |
| * - Fully expand all optional chunks, in which case the template for the |
| * function "f" would have all of the parameters. |
| */ |
| CXCompletionChunk_Optional, |
| /** |
| * \brief Text that a user would be expected to type to get this |
| * code-completion result. |
| * |
| * There will be exactly one "typed text" chunk in a semantic string, which |
| * will typically provide the spelling of a keyword or the name of a |
| * declaration that could be used at the current code point. Clients are |
| * expected to filter the code-completion results based on the text in this |
| * chunk. |
| */ |
| CXCompletionChunk_TypedText, |
| /** |
| * \brief Text that should be inserted as part of a code-completion result. |
| * |
| * A "text" chunk represents text that is part of the template to be |
| * inserted into user code should this particular code-completion result |
| * be selected. |
| */ |
| CXCompletionChunk_Text, |
| /** |
| * \brief Placeholder text that should be replaced by the user. |
| * |
| * A "placeholder" chunk marks a place where the user should insert text |
| * into the code-completion template. For example, placeholders might mark |
| * the function parameters for a function declaration, to indicate that the |
| * user should provide arguments for each of those parameters. The actual |
| * text in a placeholder is a suggestion for the text to display before |
| * the user replaces the placeholder with real code. |
| */ |
| CXCompletionChunk_Placeholder, |
| /** |
| * \brief Informative text that should be displayed but never inserted as |
| * part of the template. |
| * |
| * An "informative" chunk contains annotations that can be displayed to |
| * help the user decide whether a particular code-completion result is the |
| * right option, but which is not part of the actual template to be inserted |
| * by code completion. |
| */ |
| CXCompletionChunk_Informative, |
| /** |
| * \brief Text that describes the current parameter when code-completion is |
| * referring to function call, message send, or template specialization. |
| * |
| * A "current parameter" chunk occurs when code-completion is providing |
| * information about a parameter corresponding to the argument at the |
| * code-completion point. For example, given a function |
| * |
| * \code |
| * int add(int x, int y); |
| * \endcode |
| * |
| * and the source code \c add(, where the code-completion point is after the |
| * "(", the code-completion string will contain a "current parameter" chunk |
| * for "int x", indicating that the current argument will initialize that |
| * parameter. After typing further, to \c add(17, (where the code-completion |
| * point is after the ","), the code-completion string will contain a |
| * "current paremeter" chunk to "int y". |
| */ |
| CXCompletionChunk_CurrentParameter, |
| /** |
| * \brief A left parenthesis ('('), used to initiate a function call or |
| * signal the beginning of a function parameter list. |
| */ |
| CXCompletionChunk_LeftParen, |
| /** |
| * \brief A right parenthesis (')'), used to finish a function call or |
| * signal the end of a function parameter list. |
| */ |
| CXCompletionChunk_RightParen, |
| /** |
| * \brief A left bracket ('['). |
| */ |
| CXCompletionChunk_LeftBracket, |
| /** |
| * \brief A right bracket (']'). |
| */ |
| CXCompletionChunk_RightBracket, |
| /** |
| * \brief A left brace ('{'). |
| */ |
| CXCompletionChunk_LeftBrace, |
| /** |
| * \brief A right brace ('}'). |
| */ |
| CXCompletionChunk_RightBrace, |
| /** |
| * \brief A left angle bracket ('<'). |
| */ |
| CXCompletionChunk_LeftAngle, |
| /** |
| * \brief A right angle bracket ('>'). |
| */ |
| CXCompletionChunk_RightAngle, |
| /** |
| * \brief A comma separator (','). |
| */ |
| CXCompletionChunk_Comma, |
| /** |
| * \brief Text that specifies the result type of a given result. |
| * |
| * This special kind of informative chunk is not meant to be inserted into |
| * the text buffer. Rather, it is meant to illustrate the type that an |
| * expression using the given completion string would have. |
| */ |
| CXCompletionChunk_ResultType, |
| /** |
| * \brief A colon (':'). |
| */ |
| CXCompletionChunk_Colon, |
| /** |
| * \brief A semicolon (';'). |
| */ |
| CXCompletionChunk_SemiColon, |
| /** |
| * \brief An '=' sign. |
| */ |
| CXCompletionChunk_Equal, |
| /** |
| * Horizontal space (' '). |
| */ |
| CXCompletionChunk_HorizontalSpace, |
| /** |
| * Vertical space ('\n'), after which it is generally a good idea to |
| * perform indentation. |
| */ |
| CXCompletionChunk_VerticalSpace |
| }; |
| |
| /** |
| * \brief Determine the kind of a particular chunk within a completion string. |
| * |
| * \param completion_string the completion string to query. |
| * |
| * \param chunk_number the 0-based index of the chunk in the completion string. |
| * |
| * \returns the kind of the chunk at the index \c chunk_number. |
| */ |
| CINDEX_LINKAGE enum CXCompletionChunkKind |
| clang_getCompletionChunkKind(CXCompletionString completion_string, |
| unsigned chunk_number); |
| |
| /** |
| * \brief Retrieve the text associated with a particular chunk within a |
| * completion string. |
| * |
| * \param completion_string the completion string to query. |
| * |
| * \param chunk_number the 0-based index of the chunk in the completion string. |
| * |
| * \returns the text associated with the chunk at index \c chunk_number. |
| */ |
| CINDEX_LINKAGE const char * |
| clang_getCompletionChunkText(CXCompletionString completion_string, |
| unsigned chunk_number); |
| |
| /** |
| * \brief Retrieve the completion string associated with a particular chunk |
| * within a completion string. |
| * |
| * \param completion_string the completion string to query. |
| * |
| * \param chunk_number the 0-based index of the chunk in the completion string. |
| * |
| * \returns the completion string associated with the chunk at index |
| * \c chunk_number, or NULL if that chunk is not represented by a completion |
| * string. |
| */ |
| CINDEX_LINKAGE CXCompletionString |
| clang_getCompletionChunkCompletionString(CXCompletionString completion_string, |
| unsigned chunk_number); |
| |
| /** |
| * \brief Retrieve the number of chunks in the given code-completion string. |
| */ |
| CINDEX_LINKAGE unsigned |
| clang_getNumCompletionChunks(CXCompletionString completion_string); |
| |
| /** |
| * \brief Contains the results of code-completion. |
| * |
| * This data structure contains the results of code completion, as |
| * produced by \c clang_codeComplete. Its contents must be freed by |
| * \c clang_disposeCodeCompleteResults. |
| */ |
| typedef struct { |
| /** |
| * \brief The code-completion results. |
| */ |
| CXCompletionResult *Results; |
| |
| /** |
| * \brief The number of code-completion results stored in the |
| * \c Results array. |
| */ |
| unsigned NumResults; |
| } CXCodeCompleteResults; |
| |
| /** |
| * \brief Perform code completion at a given location in a source file. |
| * |
| * This function performs code completion at a particular file, line, and |
| * column within source code, providing results that suggest potential |
| * code snippets based on the context of the completion. The basic model |
| * for code completion is that Clang will parse a complete source file, |
| * performing syntax checking up to the location where code-completion has |
| * been requested. At that point, a special code-completion token is passed |
| * to the parser, which recognizes this token and determines, based on the |
| * current location in the C/Objective-C/C++ grammar and the state of |
| * semantic analysis, what completions to provide. These completions are |
| * returned via a new \c CXCodeCompleteResults structure. |
| * |
| * Code completion itself is meant to be triggered by the client when the |
| * user types punctuation characters or whitespace, at which point the |
| * code-completion location will coincide with the cursor. For example, if \c p |
| * is a pointer, code-completion might be triggered after the "-" and then |
| * after the ">" in \c p->. When the code-completion location is afer the ">", |
| * the completion results will provide, e.g., the members of the struct that |
| * "p" points to. The client is responsible for placing the cursor at the |
| * beginning of the token currently being typed, then filtering the results |
| * based on the contents of the token. For example, when code-completing for |
| * the expression \c p->get, the client should provide the location just after |
| * the ">" (e.g., pointing at the "g") to this code-completion hook. Then, the |
| * client can filter the results based on the current token text ("get"), only |
| * showing those results that start with "get". The intent of this interface |
| * is to separate the relatively high-latency acquisition of code-completion |
| * results from the filtering of results on a per-character basis, which must |
| * have a lower latency. |
| * |
| * \param CIdx the \c CXIndex instance that will be used to perform code |
| * completion. |
| * |
| * \param source_filename the name of the source file that should be parsed to |
| * perform code-completion. This source file must be the same as or include the |
| * filename described by \p complete_filename, or no code-completion results |
| * will be produced. NOTE: One can also specify NULL for this argument if the |
| * source file is included in command_line_args. |
| * |
| * \param num_command_line_args the number of command-line arguments stored in |
| * \p command_line_args. |
| * |
| * \param command_line_args the command-line arguments to pass to the Clang |
| * compiler to build the given source file. This should include all of the |
| * necessary include paths, language-dialect switches, precompiled header |
| * includes, etc., but should not include any information specific to |
| * code completion. |
| * |
| * \param num_unsaved_files the number of unsaved file entries in \p |
| * unsaved_files. |
| * |
| * \param unsaved_files the files that have not yet been saved to disk |
| * but may be required for code completion, including the contents of |
| * those files. |
| * |
| * \param complete_filename the name of the source file where code completion |
| * should be performed. In many cases, this name will be the same as the |
| * source filename. However, the completion filename may also be a file |
| * included by the source file, which is required when producing |
| * code-completion results for a header. |
| * |
| * \param complete_line the line at which code-completion should occur. |
| * |
| * \param complete_column the column at which code-completion should occur. |
| * Note that the column should point just after the syntactic construct that |
| * initiated code completion, and not in the middle of a lexical token. |
| * |
| * \returns if successful, a new CXCodeCompleteResults structure |
| * containing code-completion results, which should eventually be |
| * freed with \c clang_disposeCodeCompleteResults(). If code |
| * completion fails, returns NULL. |
| */ |
| CINDEX_LINKAGE |
| CXCodeCompleteResults *clang_codeComplete(CXIndex CIdx, |
| const char *source_filename, |
| int num_command_line_args, |
| const char **command_line_args, |
| unsigned num_unsaved_files, |
| struct CXUnsavedFile *unsaved_files, |
| const char *complete_filename, |
| unsigned complete_line, |
| unsigned complete_column); |
| |
| /** |
| * \brief Free the given set of code-completion results. |
| */ |
| CINDEX_LINKAGE |
| void clang_disposeCodeCompleteResults(CXCodeCompleteResults *Results); |
| |
| /** |
| * @} |
| */ |
| #ifdef __cplusplus |
| } |
| #endif |
| #endif |
| |