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Implement ContextElement for serde_json::Value

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This commit is contained in:
Tom Alexander 2020-04-11 22:47:31 -04:00
parent 0f60baf31c
commit e5e1703fab
Signed by: talexander
GPG Key ID: D3A179C9A53C0EDE
1 changed files with 23 additions and 0 deletions
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23
src/bin.rs
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@ -2,8 +2,10 @@ extern crate nom;
use renderer::compile_template; use renderer::compile_template;
use renderer::CompiledTemplate; use renderer::CompiledTemplate;
use renderer::ContextElement;
use renderer::DustRenderer; use renderer::DustRenderer;
use renderer::Renderable; use renderer::Renderable;
use renderer::Walkable;
use std::env; use std::env;
use std::fs; use std::fs;
use std::io::{self, Read}; use std::io::{self, Read};
@ -67,6 +69,8 @@ fn read_context_from_stdin() -> serde_json::map::Map<String, serde_json::Value>
} }
} }
impl ContextElement for serde_json::Value {}
impl Renderable for serde_json::Value { impl Renderable for serde_json::Value {
fn render(&self) -> String { fn render(&self) -> String {
match self { match self {
@ -79,3 +83,22 @@ impl Renderable for serde_json::Value {
} }
} }
} }
impl Walkable for serde_json::Value {
fn walk(&self, segment: &str) -> &dyn ContextElement {
match self {
serde_json::Value::Null => panic!("Attempted to walk to {} on a null value", segment),
serde_json::Value::Bool(_boolean) => {
panic!("Attempted to walk to {} on a boolean value", segment)
}
serde_json::Value::Number(_num) => {
panic!("Attempted to walk to {} on a number value", segment)
}
serde_json::Value::String(_string) => {
panic!("Attempted to walk to {} on a string value", segment)
}
serde_json::Value::Array(_arr) => todo!("Arrays not supported yet"),
serde_json::Value::Object(obj) => obj.get(segment).unwrap(),
}
}
}