Fix block documents being ignored at EOF

Fixes that block elements are being ignored when written as the last
element of a file (Fixes #14)x

Signed-off-by: trivernis <trivernis@protonmail.com>

Cargo.lock

@@ -235,9 +235,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "charred"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d76bd26a00789c7e782d3ba5c0adae6f7eabc2a1026dfb41838b0e11ebf55f8"
+checksum = "ed9759715d56a062d5636cd0cbc71f2aa8a978afe08c572a69e65e8cf53418f5"
 
 [[package]]
 name = "chrono"

Cargo.toml

@@ -21,7 +21,7 @@ path = "src/main.rs"
 pdf = ["headless_chrome", "failure"]
 
 [dependencies]
-charred = "0.3.4"
+charred = "0.3.5"
 asciimath-rs = "0.5.7"
 bibliographix = "0.6.0"
 crossbeam-utils = "0.7.2"

src/parser/block.rs

@@ -135,8 +135,9 @@ impl ParseBlock for Parser {
         let language = self.ctm.get_string_until_any(&[LB], &[])?;
         self.ctm.seek_one()?;
         let text = self.ctm.get_string_until_sequence(&[&SQ_CODE_BLOCK], &[])?;
+
         for _ in 0..2 {
-            self.ctm.seek_one()?;
+            self.ctm.try_seek();
         }
 
         Ok(CodeBlock {
@@ -153,7 +154,7 @@ impl ParseBlock for Parser {
         self.ctm.seek_one()?;
         let text = self.ctm.get_string_until_sequence(&[SQ_MATH], &[])?;
         for _ in 0..1 {
-            self.ctm.seek_one()?;
+            self.ctm.try_seek();
         }
         Ok(MathBlock {
             expression: asciimath_rs::parse(text),
@@ -231,6 +232,7 @@ impl ParseBlock for Parser {
         let ordered = self.ctm.get_current().is_numeric();
         list.ordered = ordered;
         let mut list_hierarchy: Vec<ListItem> = Vec::new();
+
         while let Ok(mut item) = self.parse_list_item() {
             while let Some(parent_item) = list_hierarchy.pop() {
                 if parent_item.level < item.level {
@@ -289,6 +291,7 @@ impl ParseBlock for Parser {
         }
         let seek_index = self.ctm.get_index();
         let mut table = Table::new(header);
+
         while let Ok(_) = self.ctm.seek_one() {
             self.ctm.seek_any(&INLINE_WHITESPACE)?;
             if !self.ctm.check_any(&[MINUS, PIPE]) || self.ctm.check_char(&LB) {