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// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use crate::schema::*;
// use std::str::FromStr;
// use std::convert::TryFrom;
// impl FromStr for Vegalite {
// type Err = serde_json::Error;
// fn from_str(s: &str) -> Result<Self, Self::Err> {
// serde_json::from_str(s)
// }
// }
impl Vegalite {
/// Render the json for a graph
pub fn to_string(&self) -> Result<String, serde_json::Error> {
serde_json::to_string(self)
}
}
// impl TryFrom<&Vegalite> for String {
// type Error = serde_json::Error;
// fn try_from(v: &Vegalite) -> Result<Self, Self::Error> {
// v.to_string()
// }
// }
// for every enum with String(String)
macro_rules! from_into_string{
( $( $x:ident ),* $(,)? ) => {
$(
impl From<&str> for $x
{
fn from(v: &str) -> Self {
$x::String(v.into())
}
}
)*
};
}
// enum that have a `String(String)`variant
// `grep -B 5 "String(String)" src/schema.rs | grep "pub enum" | sort | sed 's/pub enum \(.*\) {/\1/'`
from_into_string!(
ClearUnion,
Color,
ConditionalAxisPropertyFontStyleNull,
ConditionalAxisPropertyStringNull,
ConditionalPredicateValueDefTextExprRefText,
ConditionalValueDefGradientStringNullExprRefValue,
ConditionalValueDefNumberExprRefPredicateComposition,
ConditionalValueDefNumberExprRefSelectionComposition,
ConditionalValueDefTextExprRefText,
Day,
DomainElement,
Equal,
Field,
FluffyRange,
FluffyStream,
Format,
GridColorUnion,
InitValue,
InlineDatasetValue,
LegendText,
LegendUnion,
Lt,
MarkConfigExprOrSignalRefColor,
MarkConfigExprOrSignalRefFill,
MarkConfigExprOrSignalRefTooltip,
Month,
OnUnion,
PredicateCompositionElement,
PrimitiveValue,
PurpleStream,
RangeM,
RangeText,
Scheme,
SelectionCompositionElement,
SelectionInit,
SelectionInitInterval,
StyleColor,
StyleFill,
StyleTooltip,
TitleUnion,
Translate,
UrlDataInlineDataset,
);
// for every enum with a variant that takes a vec of an enum with a String(String) variant
// could be better with const generics : https://github.com/rust-lang/rust/issues/44580
// as in https://github.com/rust-lang/rust/issues/61415. For now, macro will generate impl for arrays up to size 32
macro_rules! from_into_array_of_str{
( $( $e:ident::$v:ident(Vec<$t:ident>) ),* $(,)? ) => {
from_into_array_of_str!($( $e::$v(Vec<$t>), )*, 32,31,30,29,28,27,26,25,24,23,
22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0);
};
( $( $e:ident::$v:ident(Vec<$t:ident>) ,)*, $end:expr ) => {
// implementations for Vec
$(
impl From<Vec<&str>> for $e
{
fn from(v: Vec<&str>) -> Self {
$e::$v(v.iter().map(|s| $t::String(s.to_string())).collect())
}
}
impl From<Vec<String>> for $e
{
fn from(v: Vec<String>) -> Self {
$e::$v(v.into_iter().map($t::String).collect())
}
}
)*
};
( $( $e:ident::$v:ident(Vec<$t:ident>) ,)*, $i:expr, $($tail:expr),+ ) => {
// implementations for array of size $i
$(
impl From<[&str; $i]> for $e
{
fn from(v: [&str; $i]) -> Self {
$e::$v(v.iter().map(|s| $t::String(s.to_string())).collect())
}
}
)*
from_into_array_of_str!($( $e::$v(Vec<$t>), )*, $($tail),*);
};
}
macro_rules! from_into_array_of_str_opt{
( $( $e:ident::$v:ident(Vec<Option<$t:ident>>) ),* $(,)? ) => {
from_into_array_of_str_opt!($( $e::$v(Vec<Option<$t>>), )*, 32,31,30,29,28,27,26,25,24,23,
22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0);
};
( $( $e:ident::$v:ident(Vec<Option<$t:ident>>) ,)*, $end:expr ) => {
// implementations for Vec
$(
impl From<Vec<&str>> for $e
{
fn from(v: Vec<&str>) -> Self {
$e::$v(v.iter().map(|s| Some($t::String(s.to_string()))).collect())
}
}
impl From<Vec<String>> for $e
{
fn from(v: Vec<String>) -> Self {
$e::$v(v.into_iter().map($t::String).map(|v| Some(v)).collect())
}
}
)*
};
( $( $e:ident::$v:ident(Vec<Option<$t:ident>>) ,)*, $i:expr, $($tail:expr),+ ) => {
// implementations for array of size $i
$(
impl From<[&str; $i]> for $e
{
fn from(v: [&str; $i]) -> Self {
$e::$v(v.iter().map(|s| Some($t::String(s.to_string()))).collect())
}
}
)*
from_into_array_of_str_opt!($( $e::$v(Vec<Option<$t>>), )*, $($tail),*);
};
}
// enums that have a variant that take a Vec of an enum with a `String` variant
// grep -B 5 "String(String)" src/schema.rs | grep "pub enum" | sort | sed 's/pub enum \(.*\) {/\1/' | \
// xargs -I % sh -c "grep '(Vec<%>),' src/schema.rs | \
// xargs -I {} sh -c 'grep -B 5 \"{}\" src/schema.rs | grep \"pub enum\" | sed \"s/pub enum \(.*\) {/\1/\" | \
// xargs -I $ sh -c \"echo \\\"$::{}\\\"\"'" | sort | uniq
from_into_array_of_str!(
FluffySortArray::UnionArray(Vec<SelectionInitInterval>),
InitValue::UnionArray(Vec<SelectionInitInterval>),
PurpleSortArray::UnionArray(Vec<SelectionInitInterval>),
ScaleRange::UnionArray(Vec<FluffyRange>),
SortUnion::UnionArray(Vec<SelectionInitInterval>),
Values::UnionArray(Vec<SelectionInitInterval>),
);
from_into_array_of_str_opt!(DomainUnion::UnionArray(Vec<Option<DomainElement>>),);
// #[cfg(test)]
// mod tests {
// use super::*;
// #[test]
// fn test_from_string_to_string() {
// let json1 = r#"
// {
// "$schema": "https://vega.github.io/schema/vega-lite/v3.json",
// "description": "Google's stock price over time.",
// "data": {"url": "data/stocks.csv"},
// "transform": [{"filter": "datum.symbol==='GOOG'"}],
// "mark": "line",
// "encoding": {
// "x": {"field": "date", "type": "temporal"},
// "y": {"field": "price", "type": "quantitative"}
// }
// }
// "#;
// let vega1 = Vegalite::from_str(json1).unwrap();
// //dbg!(vega1);
// //let json2 = vega1.to_string().unwrap();
// //let vega2 = Vegalite::from_str(json2).unwrap();
// //assert_eq!(json1, json2);
// //assert_eq!(vega1, vega2);
// }
// }