Issue CmPA#29: add errors.h for diagnostics: eprintf() and invalid_va…

…lue_error()

include/errors.h

@@ -0,0 +1,25 @@
+#ifndef ipic_errors_H
+#define ipic_errors_H
+
+void errmsg_printf_fileLine(const char *func, const char *file, int line_number, const char *format, ...);
+void eprintf_fileLine(const char *func, const char *file, int line_number, const char *format, ...);
+void Wprintf_fileLine(const char *func, const char *file, int line_number, const char *format, ...);
+
+#define errmsg_printf(args...) \
+  errmsg_printf_fileLine(__func__, __FILE__, __LINE__, ## args);
+#define eprintf(args...) \
+  errmsg_printf_fileLine(__func__, __FILE__, __LINE__, ## args);
+#define Wprintf(args...) \
+  Wprintf_fileLine(__func__, __FILE__, __LINE__, ## args);
+#define declare_invalid_value_error(t1) \
+  void invalid_value_error_fileLine(const char* file, int line, const char* func, \
+    const char* type, const char* expr, t1 val);
+declare_invalid_value_error(double);
+declare_invalid_value_error(int);
+declare_invalid_value_error(const char*);
+#define unsupported_value_error(val) invalid_value_error_fileLine( \
+  __FILE__, __LINE__, __func__, "unsupported", #val, val);
+#define invalid_value_error(val) invalid_value_error_fileLine( \
+  __FILE__, __LINE__, __func__, "invalid", #val, val);
+
+#endif

utility/errors.cpp

@@ -0,0 +1,44 @@
+
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+#include "errors.h"
+//#include "MPIdata.h" // for rank
+
+/** implementation of declarations in errors.h **/
+
+void errmsg_printf_fileLine(const char *func, const char *file, int line_number,
+  const char *format, ...)
+{
+  FILE* fptr = stdout;
+  fflush(fptr);
+  va_list args;
+  va_start(args, format);
+  fprintf(fptr, "ERROR in function %s, file %s, line %d: \n\t",
+    func, file, line_number);
+  /* print out remainder of message */
+  vfprintf(fptr, format, args);
+  va_end(args);
+  // append terminating newline so user does not have to do it
+  fprintf(fptr, "\n");
+  fflush(fptr);
+
+  abort();
+}
+
+#include <iostream>
+using namespace std;
+#define implement_invalid_value_error(t1) \
+  void invalid_value_error_fileLine(const char* file, int line, const char* func, \
+    const char* type, const char* expr, t1 val) \
+  { \
+    std::cerr<< "ERROR in file " << file << ", line " << line  \
+      << ", function " << func  \
+      <<"\n\t" << type << " value: " << expr << " = " << val << endl; \
+      abort(); \
+  }
+
+implement_invalid_value_error(double);
+implement_invalid_value_error(int);
+implement_invalid_value_error(const char*);
+