Use pragma once instead of include guard

Pragma once is supported by all compilers for the last ten years.
Better use it instead of include guards (which use different styles
in different files).

samples/FFI-readline/readline_glue/idris_readline.h

@@ -1,5 +1,4 @@
-#ifndef _IDRIS_READLINE_H
-#define _IDRIS_READLINE_H
+#pragma once
 
 void idrisrl_setCompletion(rl_completion_func_t* fn);
 
@@ -7,5 +6,3 @@ char* getString(void* str);
 void* mkString(char* str);
 void* nullString();
 int isNullString(void* str);
-
-#endif

support/c/getline.h

@@ -1,7 +1,6 @@
-#ifndef GETLINE_H
-#define GETLINE_H
+#pragma once
+
 #include <stdlib.h>
 #include <stdio.h>
 ssize_t getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp);
 ssize_t getline(char **buf, size_t *bufsiz, FILE *fp);
-#endif // GETLINE_H

support/c/idris_directory.h

@@ -1,5 +1,4 @@
-#ifndef __IDRIS_DIRECTORY_H
-#define __IDRIS_DIRECTORY_H
+#pragma once
 
 char* idris2_currentDirectory();
 int idris2_changeDir(char* dir);
@@ -8,5 +7,3 @@ void* idris2_openDir(char* dir);
 void idris2_closeDir(void* d);
 int idris2_removeDir(char* path);
 char* idris2_nextDirEntry(void* d);
-
-#endif

support/c/idris_file.h

@@ -1,5 +1,4 @@
-#ifndef __IDRIS_FILE_H
-#define __IDRIS_FILE_H
+#pragma once
 
 #include <stdio.h>
 #include <stdint.h>
@@ -37,5 +36,3 @@ int idris2_fileStatusTime(FILE* f);
 FILE* idris2_stdin();
 FILE* idris2_stdout();
 FILE* idris2_stderr();
-
-#endif

support/c/idris_net.h

@@ -1,5 +1,4 @@
-#ifndef IDRISNET_H
-#define IDRISNET_H
+#pragma once
 
 // Includes used by the idris-file.
 #ifdef _WIN32
@@ -114,5 +113,3 @@ int idrnet_getaddrinfo(struct addrinfo** address_res, char* host,
 int idrnet_geteagain();
 
 int isNull(void* ptr);
-
-#endif

support/c/idris_signal.h

@@ -1,5 +1,4 @@
-#ifndef __IDRIS_SIGNAL_H
-#define __IDRIS_SIGNAL_H
+#pragma once
 
 #include <signal.h>
 
@@ -42,5 +41,3 @@ int sigquit();
 int sigtrap();
 int sigusr1();
 int sigusr2();
-
-#endif

support/c/idris_support.h

@@ -1,5 +1,4 @@
-#ifndef __IDRIS_SUPPORT_H
-#define __IDRIS_SUPPORT_H
+#pragma once
 
 // Return non-zero if the pointer is null
 int idris2_isNull(void*);
@@ -25,5 +24,3 @@ char* idris2_getEnvPair(int i);
 int idris2_getPID();
 
 long idris2_getNProcessors();
-
-#endif

support/c/idris_term.h

@@ -1,8 +1,5 @@
-#ifndef __IDRIS_TERM_H
-#define __IDRIS_TERM_H
+#pragma once
 
 void idris2_setupTerm();
 int idris2_getTermCols();
 int idris2_getTermLines();
-
-#endif

support/refc/buffer.h

@@ -1,5 +1,4 @@
-#ifndef __IDRIS_BUFFER_H__
-#define __IDRIS_BUFFER_H__
+#pragma once
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -23,5 +22,3 @@ int64_t getBufferInt(void* buffer, int loc);
 double getBufferDouble(void* buffer, int loc);
 char* getBufferString(void* buffer, int loc, int len);
 size_t readBufferData(FILE* h, void* buffer, size_t loc, size_t max);
-
-#endif

support/refc/cBackend.h

@@ -1,5 +1,5 @@
-#ifndef __C_BACKEND_H__
-#define __C_BACKEND_H__
+#pragma once
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -15,5 +15,3 @@
 #include "casts.h"
 #include "conCaseHelper.h"
 #include "prim.h"
-
-#endif

support/refc/casts.h

@@ -1,5 +1,4 @@
-#ifndef __CASTS_H__
-#define __CASTS_H__
+#pragma once
 
 #include "cBackend.h"
 #include <stdio.h>
@@ -149,5 +148,3 @@ Value *cast_Integer_to_Int64(Value *input);
 Value *cast_Integer_to_double(Value *input);
 Value *cast_Integer_to_char(Value *input);
 Value *cast_Integer_to_string(Value *input);
-
-#endif

support/refc/clock.h

@@ -1,5 +1,4 @@
-#ifndef __IDRIS_CLOCK_H__
-#define __IDRIS_CLOCK_H__
+#pragma once
 
 #include <time.h>
 
@@ -15,5 +14,3 @@ Value *clockTimeGcReal();
 int clockValid(Value *clock);
 uint64_t clockSecond(Value *clock);
 uint64_t clockNanosecond(Value *clock);
-
-#endif

support/refc/conCaseHelper.h

@@ -1,5 +1,4 @@
-#ifndef __CON_CASE_HELPER_H__
-#define __CON_CASE_HELPER_H__
+#pragma once
 
 #include "cBackend.h"
 
@@ -16,5 +15,3 @@ void freeConstructorField(AConAlt *);
 
 int multiStringCompare(Value *, int, char **);
 int multiDoubleCompare(Value *, int, double *);
-
-#endif

support/refc/datatypes.h

@@ -1,5 +1,5 @@
-#ifndef __DATATYPES_H__
-#define __DATATYPES_H__
+#pragma once
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -204,5 +204,3 @@ typedef struct
     Value_header header;
     IORef_Storage *listIORefs;
 } Value_World;
-
-#endif

support/refc/mathFunctions.h

@@ -1,5 +1,5 @@
-#ifndef __MATH_FUNCTIONS_H__
-#define __MATH_FUNCTIONS_H__
+#pragma once
+
 #include "cBackend.h"
 #include <math.h>
 #include <gmp.h>
@@ -202,4 +202,3 @@ Value *gte_Integer(Value *x, Value *y);
 Value *gte_double(Value *x, Value *y);
 Value *gte_char(Value *x, Value *y);
 Value *gte_string(Value *x, Value *y);
-#endif

support/refc/memoryManagement.h

@@ -1,5 +1,5 @@
-#ifndef __MEMORY_MANAGEMENT_H__
-#define __MEMORY_MANAGEMENT_H__
+#pragma once
+
 #include "cBackend.h"
 
 Value *newValue(void);
@@ -33,5 +33,3 @@ Value_GCPointer *makeGCPointer(void *ptr_Raw, Value_Closure *onCollectFct);
 Value_Buffer *makeBuffer(void *buf);
 Value_Array *makeArray(int length);
 Value_World *makeWorld(void);
-
-#endif

support/refc/prim.h

@@ -1,5 +1,4 @@
-#ifndef __PRIM_H__
-#define __PRIM_H__
+#pragma once
 
 #include "cBackend.h"
 
@@ -44,4 +43,3 @@ Value *System_Concurrency_Raw_prim__conditionWaitTimeout(Value *, Value *, Value
 Value *System_Concurrency_Raw_prim__conditionSignal(Value *, Value *);
 
 Value *System_Concurrency_Raw_prim__conditionBroadcast(Value *, Value *);
-#endif

support/refc/runtime.h

@@ -1,5 +1,4 @@
-#ifndef __RUNTIME_H__
-#define __RUNTIME_H__
+#pragma once
 
 #include "cBackend.h"
 
@@ -11,4 +10,3 @@ void push_Arglist(Value_Arglist *arglist, Value *arg);
 int extractInt(Value *);
 Value *trampoline(Value *closure);
 Value *tailcall_apply_closure(Value *_clos, Value *arg);
-#endif

support/refc/stringOps.h

@@ -1,5 +1,4 @@
-#ifndef __STRING_OPS_H__
-#define __STRING_OPS_H__
+#pragma once
 
 #include "cBackend.h"
 
@@ -20,5 +19,3 @@ Value *onCollectStringIterator(Value_Pointer *ptr, void *null);
 Value *onCollectStringIterator_arglist(Value_Arglist *arglist);
 Value *stringIteratorToString(void *a, char *str, Value *it_p, Value_Closure *f);
 Value *stringIteratorNext(char *s, Value *it_p);
-
-#endif

tests/chez/chez013/struct.h

@@ -1,5 +1,4 @@
-#ifndef _STRUCT_H
-#define _STRUCT_H
+#pragma once
 
 typedef struct {
     int x;
@@ -18,5 +17,3 @@ namedpoint* mkNamedPoint(char* str, point* p);
 void freeNamedPoint(namedpoint* np);
 
 char* getString(void *p);
-
-#endif