//===------------ DebugInfo.h - LLVM C API Debug Info API -----------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// This file declares the C API endpoints for generating DWARF Debug Info
///
/// Note: This interface is experimental. It is *NOT* stable, and may be
///       changed without warning.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_C_DEBUGINFO_H
#define LLVM_C_DEBUGINFO_H

#include "llvm-c/Core.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * Debug info flags.
 */
typedef enum {
  LLVMDIFlagZero = 0,
  LLVMDIFlagPrivate = 1,
  LLVMDIFlagProtected = 2,
  LLVMDIFlagPublic = 3,
  LLVMDIFlagFwdDecl = 1 << 2,
  LLVMDIFlagAppleBlock = 1 << 3,
  LLVMDIFlagBlockByrefStruct = 1 << 4,
  LLVMDIFlagVirtual = 1 << 5,
  LLVMDIFlagArtificial = 1 << 6,
  LLVMDIFlagExplicit = 1 << 7,
  LLVMDIFlagPrototyped = 1 << 8,
  LLVMDIFlagObjcClassComplete = 1 << 9,
  LLVMDIFlagObjectPointer = 1 << 10,
  LLVMDIFlagVector = 1 << 11,
  LLVMDIFlagStaticMember = 1 << 12,
  LLVMDIFlagLValueReference = 1 << 13,
  LLVMDIFlagRValueReference = 1 << 14,
  LLVMDIFlagReserved = 1 << 15,
  LLVMDIFlagSingleInheritance = 1 << 16,
  LLVMDIFlagMultipleInheritance = 2 << 16,
  LLVMDIFlagVirtualInheritance = 3 << 16,
  LLVMDIFlagIntroducedVirtual = 1 << 18,
  LLVMDIFlagBitField = 1 << 19,
  LLVMDIFlagNoReturn = 1 << 20,
  LLVMDIFlagMainSubprogram = 1 << 21,
  LLVMDIFlagIndirectVirtualBase = (1 << 2) | (1 << 5),
  LLVMDIFlagAccessibility = LLVMDIFlagPrivate | LLVMDIFlagProtected |
                            LLVMDIFlagPublic,
  LLVMDIFlagPtrToMemberRep = LLVMDIFlagSingleInheritance |
                             LLVMDIFlagMultipleInheritance |
                             LLVMDIFlagVirtualInheritance
} LLVMDIFlags;

/**
 * Source languages known by DWARF.
 */
typedef enum {
  LLVMDWARFSourceLanguageC89,
  LLVMDWARFSourceLanguageC,
  LLVMDWARFSourceLanguageAda83,
  LLVMDWARFSourceLanguageC_plus_plus,
  LLVMDWARFSourceLanguageCobol74,
  LLVMDWARFSourceLanguageCobol85,
  LLVMDWARFSourceLanguageFortran77,
  LLVMDWARFSourceLanguageFortran90,
  LLVMDWARFSourceLanguagePascal83,
  LLVMDWARFSourceLanguageModula2,
  // New in DWARF v3:
  LLVMDWARFSourceLanguageJava,
  LLVMDWARFSourceLanguageC99,
  LLVMDWARFSourceLanguageAda95,
  LLVMDWARFSourceLanguageFortran95,
  LLVMDWARFSourceLanguagePLI,
  LLVMDWARFSourceLanguageObjC,
  LLVMDWARFSourceLanguageObjC_plus_plus,
  LLVMDWARFSourceLanguageUPC,
  LLVMDWARFSourceLanguageD,
  // New in DWARF v4:
  LLVMDWARFSourceLanguagePython,
  // New in DWARF v5:
  LLVMDWARFSourceLanguageOpenCL,
  LLVMDWARFSourceLanguageGo,
  LLVMDWARFSourceLanguageModula3,
  LLVMDWARFSourceLanguageHaskell,
  LLVMDWARFSourceLanguageC_plus_plus_03,
  LLVMDWARFSourceLanguageC_plus_plus_11,
  LLVMDWARFSourceLanguageOCaml,
  LLVMDWARFSourceLanguageRust,
  LLVMDWARFSourceLanguageC11,
  LLVMDWARFSourceLanguageSwift,
  LLVMDWARFSourceLanguageJulia,
  LLVMDWARFSourceLanguageDylan,
  LLVMDWARFSourceLanguageC_plus_plus_14,
  LLVMDWARFSourceLanguageFortran03,
  LLVMDWARFSourceLanguageFortran08,
  LLVMDWARFSourceLanguageRenderScript,
  LLVMDWARFSourceLanguageBLISS,
  // Vendor extensions:
  LLVMDWARFSourceLanguageMips_Assembler,
  LLVMDWARFSourceLanguageGOOGLE_RenderScript,
  LLVMDWARFSourceLanguageBORLAND_Delphi
} LLVMDWARFSourceLanguage;

/**
 * The amount of debug information to emit.
 */
typedef enum {
    LLVMDWARFEmissionNone = 0,
    LLVMDWARFEmissionFull,
    LLVMDWARFEmissionLineTablesOnly
} LLVMDWARFEmissionKind;

/**
 * The current debug metadata version number.
 */
unsigned LLVMDebugMetadataVersion(void);

/**
 * The version of debug metadata that's present in the provided \c Module.
 */
unsigned LLVMGetModuleDebugMetadataVersion(LLVMModuleRef Module);

/**
 * Strip debug info in the module if it exists.
 * To do this, we remove all calls to the debugger intrinsics and any named
 * metadata for debugging. We also remove debug locations for instructions.
 * Return true if module is modified.
 */
LLVMBool LLVMStripModuleDebugInfo(LLVMModuleRef Module);

/**
 * Construct a builder for a module, and do not allow for unresolved nodes
 * attached to the module.
 */
LLVMDIBuilderRef LLVMCreateDIBuilderDisallowUnresolved(LLVMModuleRef M);

/**
 * Construct a builder for a module and collect unresolved nodes attached
 * to the module in order to resolve cycles during a call to
 * \c LLVMDIBuilderFinalize.
 */
LLVMDIBuilderRef LLVMCreateDIBuilder(LLVMModuleRef M);

/**
 * Deallocates the \c DIBuilder and everything it owns.
 * @note You must call \c LLVMDIBuilderFinalize before this
 */
void LLVMDisposeDIBuilder(LLVMDIBuilderRef Builder);

/**
 * Construct any deferred debug info descriptors.
 */
void LLVMDIBuilderFinalize(LLVMDIBuilderRef Builder);

/**
 * A CompileUnit provides an anchor for all debugging
 * information generated during this instance of compilation.
 * \param Lang          Source programming language, eg.
 *                      \c LLVMDWARFSourceLanguageC99
 * \param FileRef       File info.
 * \param Producer      Identify the producer of debugging information
 *                      and code.  Usually this is a compiler
 *                      version string.
 * \param ProducerLen   The length of the C string passed to \c Producer.
 * \param isOptimized   A boolean flag which indicates whether optimization
 *                      is enabled or not.
 * \param Flags         This string lists command line options. This
 *                      string is directly embedded in debug info
 *                      output which may be used by a tool
 *                      analyzing generated debugging information.
 * \param FlagsLen      The length of the C string passed to \c Flags.
 * \param RuntimeVer    This indicates runtime version for languages like
 *                      Objective-C.
 * \param SplitName     The name of the file that we'll split debug info
 *                      out into.
 * \param SplitNameLen  The length of the C string passed to \c SplitName.
 * \param Kind          The kind of debug information to generate.
 * \param DWOId         The DWOId if this is a split skeleton compile unit.
 * \param SplitDebugInlining    Whether to emit inline debug info.
 * \param DebugInfoForProfiling Whether to emit extra debug info for
 *                              profile collection.
 */
LLVMMetadataRef LLVMDIBuilderCreateCompileUnit(
    LLVMDIBuilderRef Builder, LLVMDWARFSourceLanguage Lang,
    LLVMMetadataRef FileRef, const char *Producer, size_t ProducerLen,
    LLVMBool isOptimized, const char *Flags, size_t FlagsLen,
    unsigned RuntimeVer, const char *SplitName, size_t SplitNameLen,
    LLVMDWARFEmissionKind Kind, unsigned DWOId, LLVMBool SplitDebugInlining,
    LLVMBool DebugInfoForProfiling);

/**
 * Create a file descriptor to hold debugging information for a file.
 * \param Builder      The \c DIBuilder.
 * \param Filename     File name.
 * \param FilenameLen  The length of the C string passed to \c Filename.
 * \param Directory    Directory.
 * \param DirectoryLen The length of the C string passed to \c Directory.
 */
LLVMMetadataRef
LLVMDIBuilderCreateFile(LLVMDIBuilderRef Builder, const char *Filename,
                        size_t FilenameLen, const char *Directory,
                        size_t DirectoryLen);

/**
 * Creates a new DebugLocation that describes a source location.
 * \param Line The line in the source file.
 * \param Column The column in the source file.
 * \param Scope The scope in which the location resides.
 * \param InlinedAt The scope where this location was inlined, if at all.
 *                  (optional).
 * \note If the item to which this location is attached cannot be
 *       attributed to a source line, pass 0 for the line and column.
 */
LLVMMetadataRef
LLVMDIBuilderCreateDebugLocation(LLVMContextRef Ctx, unsigned Line,
                                 unsigned Column, LLVMMetadataRef Scope,
                                 LLVMMetadataRef InlinedAt);

#ifdef __cplusplus
} /* end extern "C" */
#endif

#endif