forked from OSchip/llvm-project
94 lines
3.5 KiB
C
94 lines
3.5 KiB
C
/*===-- mlir-c/Support.h - Helpers for C API to Core MLIR ---------*- 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 declares the auxiliary data structures used in C APIs to core *|
|
|
|* MLIR functionality. *|
|
|
|* *|
|
|
\*===----------------------------------------------------------------------===*/
|
|
|
|
#ifndef MLIR_C_SUPPORT_H
|
|
#define MLIR_C_SUPPORT_H
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*============================================================================*/
|
|
/* MlirStringRef. */
|
|
/*============================================================================*/
|
|
|
|
/** A pointer to a sized fragment of a string, not necessarily null-terminated.
|
|
* Does not own the underlying string. This is equivalent to llvm::StringRef.
|
|
*/
|
|
struct MlirStringRef {
|
|
const char *data; /**< Pointer to the first symbol. */
|
|
size_t length; /**< Length of the fragment. */
|
|
};
|
|
typedef struct MlirStringRef MlirStringRef;
|
|
|
|
/** Constructs a string reference from the pointer and length. The pointer need
|
|
* not reference to a null-terminated string.
|
|
*/
|
|
inline MlirStringRef mlirStringRefCreate(const char *str, size_t length) {
|
|
MlirStringRef result;
|
|
result.data = str;
|
|
result.length = length;
|
|
return result;
|
|
}
|
|
|
|
/** Constructs a string reference from a null-terminated C string. Prefer
|
|
* mlirStringRefCreate if the length of the string is known.
|
|
*/
|
|
MlirStringRef mlirStringRefCreateFromCString(const char *str);
|
|
|
|
/*============================================================================*/
|
|
/* MlirLogicalResult. */
|
|
/*============================================================================*/
|
|
|
|
/** A logical result value, essentially a boolean with named states. LLVM
|
|
* convention for using boolean values to designate success or failure of an
|
|
* operation is a moving target, so MLIR opted for an explicit class.
|
|
* Instances of MlirLogicalResult must only be inspected using the associated
|
|
* functions. */
|
|
struct MlirLogicalResult {
|
|
int8_t value;
|
|
};
|
|
typedef struct MlirLogicalResult MlirLogicalResult;
|
|
|
|
/** Checks if the given logical result represents a success. */
|
|
inline int mlirLogicalResultIsSuccess(MlirLogicalResult res) {
|
|
return res.value != 0;
|
|
}
|
|
|
|
/** Checks if the given logical result represents a failure. */
|
|
inline int mlirLogicalResultIsFailure(MlirLogicalResult res) {
|
|
return res.value == 0;
|
|
}
|
|
|
|
/** Creates a logical result representing a success. */
|
|
inline static MlirLogicalResult mlirLogicalResultSuccess() {
|
|
MlirLogicalResult res = {1};
|
|
return res;
|
|
}
|
|
|
|
/** Creates a logical result representing a failure. */
|
|
inline static MlirLogicalResult mlirLogicalResultFailure() {
|
|
MlirLogicalResult res = {0};
|
|
return res;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // MLIR_C_SUPPORT_H
|