Add ‘every’ function on a value for field iteration

lib/src/sql/ident.rs

@@ -31,6 +31,14 @@ impl<'a> From<&'a str> for Ident {
 	}
 }
 
+impl<'a> From<&'a String> for Ident {
+	fn from(i: &String) -> Ident {
+		Ident {
+			name: String::from(i),
+		}
+	}
+}
+
 impl fmt::Display for Ident {
 	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 		write!(f, "{}", escape(&self.name, &val_char, "`"))

lib/src/sql/part.rs

@@ -71,11 +71,17 @@ impl From<String> for Part {
 	}
 }
 
+impl From<&String> for Part {
+	fn from(v: &String) -> Self {
+		Part::Field(Ident::from(v))
+	}
+}
+
 impl From<&str> for Part {
 	fn from(v: &str) -> Self {
 		match v.parse::<isize>() {
 			Ok(v) => Part::from(v),
-			_ => Part::from(v.to_string()),
+			_ => Part::from(v.to_owned()),
 		}
 	}
 }

lib/src/sql/value/every.rs

@@ -0,0 +1,50 @@
+use crate::sql::idiom::Idiom;
+use crate::sql::part::Part;
+use crate::sql::value::Value;
+
+impl Value {
+	pub fn every(&self) -> Vec<Idiom> {
+		self._every(Idiom::default())
+	}
+	fn _every(&self, prev: Idiom) -> Vec<Idiom> {
+		match self {
+			// Current path part is an object
+			Value::Object(v) => v
+				.value
+				.iter()
+				.flat_map(|(k, v)| v._every(prev.add(Part::from(k))))
+				.collect::<Vec<_>>(),
+			// Current path part is an array
+			Value::Array(v) => v
+				.value
+				.iter()
+				.enumerate()
+				.flat_map(|(i, v)| v._every(prev.add(Part::from(i))))
+				.collect::<Vec<_>>(),
+			// Process everything else
+			_ => vec![prev],
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+
+	use super::*;
+	use crate::sql::idiom::Idiom;
+	use crate::sql::test::Parse;
+
+	#[test]
+	fn every() {
+		let val = Value::parse("{ test: { something: [{ age: 34, tags: ['code', 'databases'] }, { age: 36, tags: ['design', 'operations'] }] } }");
+		let res = vec![
+			Idiom::parse("test.something[0].age"),
+			Idiom::parse("test.something[0].tags[0]"),
+			Idiom::parse("test.something[0].tags[1]"),
+			Idiom::parse("test.something[1].age"),
+			Idiom::parse("test.something[1].tags[0]"),
+			Idiom::parse("test.something[1].tags[1]"),
+		];
+		assert_eq!(res, val.every());
+	}
+}

lib/src/sql/value/mod.rs

@@ -9,6 +9,7 @@ mod def;
 mod del;
 mod diff;
 mod each;
+mod every;
 mod first;
 mod get;
 mod increment;