LSST Applications g04e9c324dd+8c5ae1fdc5,g134cb467dc+1b3060144d,g18429d2f64+f642bf4753,g199a45376c+0ba108daf9,g1fd858c14a+2dcf163641,g262e1987ae+7b8c96d2ca,g29ae962dfc+3bd6ecb08a,g2cef7863aa+aef1011c0b,g35bb328faa+8c5ae1fdc5,g3fd5ace14f+53e1a9e7c5,g4595892280+fef73a337f,g47891489e3+2efcf17695,g4d44eb3520+642b70b07e,g53246c7159+8c5ae1fdc5,g67b6fd64d1+2efcf17695,g67fd3c3899+b70e05ef52,g74acd417e5+317eb4c7d4,g786e29fd12+668abc6043,g87389fa792+8856018cbb,g89139ef638+2efcf17695,g8d7436a09f+3be3c13596,g8ea07a8fe4+9f5ccc88ac,g90f42f885a+a4e7b16d9b,g97be763408+ad77d7208f,g9dd6db0277+b70e05ef52,ga681d05dcb+a3f46e7fff,gabf8522325+735880ea63,gac2eed3f23+2efcf17695,gb89ab40317+2efcf17695,gbf99507273+8c5ae1fdc5,gd8ff7fe66e+b70e05ef52,gdab6d2f7ff+317eb4c7d4,gdc713202bf+b70e05ef52,gdfd2d52018+b10e285e0f,ge365c994fd+310e8507c4,ge410e46f29+2efcf17695,geaed405ab2+562b3308c0,gffca2db377+8c5ae1fdc5,w.2025.35
LSST Data Management Base Package
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base.cc
Go to the documentation of this file.
1#include "astshim/base.h"
2
3#include <sstream>
4#include <stdexcept>
5#include <string>
6#include <vector>
7
8namespace ast {
9namespace {
10
11static std::ostringstream errorMsgStream;
12
13/*
14Write an error message to `errorMsgStream`
15
16Intended to be registered as an error handler to AST by calling `astSetPutErr(reportError)`.
17*/
18void reportError(int errNum, const char *errMsg) { errorMsgStream << errMsg; }
19
20/*
21Instantiate this class to register `reportError` as an AST error handler.
22*/
23class ErrorHandler {
24public:
25 ErrorHandler() { astSetPutErr(reportError); }
26
27 ErrorHandler(ErrorHandler const &) = delete;
28 ErrorHandler(ErrorHandler &&) = delete;
29 ErrorHandler &operator=(ErrorHandler const &) = delete;
30 ErrorHandler &operator=(ErrorHandler &&) = delete;
31
32 static std::string getErrMsg() {
33 auto errMsg = errorMsgStream.str();
34 // clear status bits
35 errorMsgStream.clear();
36 if (errMsg.empty()) {
37 errMsg = "Failed with AST status = " + std::to_string(astStatus);
38 } else {
39 // empty the stream
40 errorMsgStream.str("");
41 }
42 astClearStatus;
43 return errMsg;
44 }
45};
46
47} // namespace
48
49void assertOK(AstObject *rawPtr1, AstObject *rawPtr2) {
50 // Construct ErrorHandler once, the first time this function is called.
51 // This is done to initialize `errorMsgStream` and register `reportError` as the AST error handler.
52 // See https://isocpp.org/wiki/faq/ctors#static-init-order-on-first-use
53 static ErrorHandler *errHandler = new ErrorHandler();
54 if (!astOK) {
55 if (rawPtr1) {
56 astAnnul(rawPtr1);
57 }
58 if (rawPtr2) {
59 astAnnul(rawPtr2);
60 }
61 throw std::runtime_error(errHandler->getErrMsg());
62 }
63}
64
66 return static_cast<ConstArray2D>(arrayFromVector(const_cast<std::vector<double> &>(vec), nAxes));
67}
68
70 int nPoints = vec.size() / nAxes;
71 if (static_cast<std::size_t>(nPoints * nAxes) != vec.size()) {
73 os << "vec length = " << vec.size() << " not a multiple of nAxes = " << nAxes;
74 throw std::runtime_error(os.str());
75 }
76 Array2D::Index shape = ndarray::makeVector(nAxes, nPoints);
77 Array2D::Index strides = ndarray::makeVector(nPoints, 1);
78 return external(vec.data(), shape, strides);
79}
80
81} // namespace ast
T clear(T... args)
T data(T... args)
AST wrapper classes and functions.
ndarray::Array< const double, 2, 2 > ConstArray2D
2D array of const double; typically used for lists of const points
Definition base.h:46
ndarray::Array< double, 2, 2 > Array2D
2D array of const double; typically used for lists of const points
Definition base.h:42
void assertOK(AstObject *rawPtr1=nullptr, AstObject *rawPtr2=nullptr)
Throw std::runtime_error if AST's state is bad.
Definition base.cc:49
ConstArray2D arrayFromVector(std::vector< double > const &vec, int nAxes)
Reshape a vector as a 2-dimensional array that shares the same memory.
Definition base.cc:65
T size(T... args)
T str(T... args)
T to_string(T... args)