brk: first commit

_src/parser/states/date_data_vec.rs

@@ -0,0 +1,50 @@
+use allocative::Allocative;
+use bincode::{Decode, Encode};
+use derive_deref::{Deref, DerefMut};
+use serde::{Deserialize, Serialize};
+
+use crate::structs::{BlockData, BlockPath, DateData};
+
+use super::AnyState;
+
+#[derive(Default, Deref, DerefMut, Debug, Serialize, Deserialize, Encode, Decode, Allocative)]
+pub struct DateDataVec(Vec<DateData>);
+
+impl DateDataVec {
+    pub fn last_block(&self) -> Option<&BlockData> {
+        self.iter().flat_map(|date_data| &date_data.blocks).last()
+    }
+
+    pub fn last_mut_block(&mut self) -> Option<&mut BlockData> {
+        self.iter_mut()
+            .flat_map(|date_data| &mut date_data.blocks)
+            .last()
+    }
+
+    pub fn second_last_block(&self) -> Option<&BlockData> {
+        self.iter()
+            .flat_map(|date_data| &date_data.blocks)
+            .rev()
+            .nth(1)
+    }
+
+    pub fn get_date_data(&self, block_path: &BlockPath) -> Option<&DateData> {
+        self.0.get(block_path.date_index as usize)
+    }
+
+    pub fn get_block_data(&self, block_path: &BlockPath) -> Option<&BlockData> {
+        self.0
+            .get(block_path.date_index as usize)
+            .and_then(|date_data| date_data.blocks.get(block_path.block_index as usize))
+    }
+}
+
+impl AnyState for DateDataVec {
+    fn name<'a>() -> &'a str {
+        "date_data_vec"
+    }
+
+    fn clear(&mut self) {
+        self.0.clear();
+    }
+}