Constructor
MaplibreNativeFfiStyleExpressioncreate
Declaration [src]
MaplibreNativeFfiStyleExpression*
maplibre_native_ffi_style_expression_create (
const char* expression,
MaplibreNativeFfiStyleExpressionOptions* options,
GError** error
)
Description [src]
Parses a style [expression](https://maplibre.org/maplibre-style-spec/expressions/) to evaluate without a map.
See mln_style_expression_create in the
C API reference.
It fails with these errors:
MAPLIBRE_NATIVE_FFI_ERROR_INVALID_ARGUMENTwhenexpressionisn’t a valid expression, or its result can’t have the expected type.
Parameters
expression-
Type:
const char*The UTF-8 text.
The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string. options-
Type:
MaplibreNativeFfiStyleExpressionOptionsThe value, or
NULL.The argument can be NULL.The data is owned by the caller of the function. error-
Type:
GError **The return location for a recoverable error.
The argument can be NULL.If the return location is not NULL, then you must initialize it to aNULLGError*.The argument will be left initialized to NULLby the constructor if there are no errors.In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.
Return value
Type: MaplibreNativeFfiStyleExpression
The object.
| The caller of the function takes ownership of the data, and is responsible for freeing it. |