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extern crate serde;
#[macro_use]
extern crate serde_json;
extern crate geo;
extern crate num_traits;
pub type Bbox = Vec<f64>;
pub type Position = Vec<f64>;
pub type PointType = Position;
pub type LineStringType = Vec<Position>;
pub type PolygonType = Vec<Vec<Position>>;
#[macro_use]
mod macros;
mod util;
mod geojson;
pub use geojson::GeoJson;
mod geometry;
pub use geometry::{Geometry, Value};
mod feature;
pub use feature::Feature;
mod feature_collection;
pub use feature_collection::FeatureCollection;
#[doc(hidden)]
pub mod conversion;
#[derive(Debug, PartialEq, Eq)]
pub enum Error {
BboxExpectedArray,
BboxExpectedNumericValues,
GeoJsonExpectedObject,
GeoJsonUnknownType,
GeometryUnknownType,
MalformedJson,
PropertiesExpectedObjectOrNull,
FeatureInvalidGeometryValue,
ExpectedStringValue,
ExpectedProperty,
ExpectedF64Value,
ExpectedArrayValue,
ExpectedObjectValue,
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
match *self {
Error::BboxExpectedArray =>
write!(f, "Encountered non-array type for a 'bbox' object."),
Error::BboxExpectedNumericValues =>
write!(f, "Encountered non-numeric value within 'bbox' array."),
Error::GeoJsonExpectedObject =>
write!(f, "Encountered non-object type for GeoJSON."),
Error::GeoJsonUnknownType =>
write!(f, "Encountered unknown GeoJSON object type."),
Error::GeometryUnknownType =>
write!(f, "Encountered unknown 'geometry' object type."),
Error::MalformedJson =>
write!(f, "Encountered malformed JSON."),
Error::PropertiesExpectedObjectOrNull =>
write!(f, "Encountered neither object type nor null type for \
'properties' object."),
Error::FeatureInvalidGeometryValue =>
write!(f, "Encountered neither object type nor null type for \
'geometry' field on 'feature' object."),
Error::ExpectedStringValue =>
write!(f, "Expected a string value."),
Error::ExpectedProperty =>
write!(f, "Expected a GeoJSON 'property'."),
Error::ExpectedF64Value =>
write!(f, "Expected a floating-point value."),
Error::ExpectedArrayValue =>
write!(f, "Expected an array."),
Error::ExpectedObjectValue =>
write!(f, "Expected an object."),
}
}
}
impl std::error::Error for Error {
fn description(&self) -> &str {
match *self {
Error::BboxExpectedArray => "non-array 'bbox' type",
Error::BboxExpectedNumericValues => "non-numeric 'bbox' array",
Error::GeoJsonExpectedObject => "non-object GeoJSON type",
Error::GeoJsonUnknownType => "unknown GeoJSON object type",
Error::GeometryUnknownType => "unknown 'geometry' object type",
Error::MalformedJson => "malformed JSON",
Error::PropertiesExpectedObjectOrNull => {
"neither object type nor null type for properties' object."
}
Error::FeatureInvalidGeometryValue => {
"neither object type nor null type for 'geometry' field on 'feature' object."
}
Error::ExpectedStringValue => "expected a string value",
Error::ExpectedProperty => "expected a GeoJSON 'property'",
Error::ExpectedF64Value => "expected a floating-point value",
Error::ExpectedArrayValue => "expected an array",
Error::ExpectedObjectValue => "expected an object",
}
}
}
mod json {
pub use serde::{Serialize, Deserialize, Serializer, Deserializer};
pub use serde_json::{Map, Value as JsonValue};
pub type JsonObject = Map<String, JsonValue>;
}
trait FromObject: Sized {
fn from_object(object: json::JsonObject) -> Result<Self, Error>;
}