Fix of behavior of heredoc witout eof

Author: ryuichiueda

error

@@ -101,3 +101,4 @@
 ./test_fixed.bash
 ./test_fixed.bash
 ./test_builtins.bash
+./test_fixed.bash

src/elements/command.rs

@@ -117,9 +117,7 @@ pub trait Command {
         self.get_text().replace("\n", " ")
     }
     fn get_redirects(&mut self) -> &mut Vec<Redirect>;
-    fn get_lineno(&mut self) -> usize {
-        panic!("IMPLEMENT!!")
-    }
+    fn get_lineno(&mut self) -> usize;
     fn set_force_fork(&mut self);
     fn boxed_clone(&self) -> Box<dyn Command>;
     fn force_fork(&self) -> bool;
@@ -129,13 +127,14 @@ pub trait Command {
         feeder: &mut Feeder,
         core: &mut ShellCore,
     ) -> Result<(), ParseError> {
+        let lineno = self.get_lineno();
         for r in self.get_redirects().iter_mut() {
             if r.called_as_heredoc {
                 continue;
             }
             if r.symbol == "<<" || r.symbol == "<<-" {
                 r.called_as_heredoc = true;
-                r.eat_heredoc(feeder, core)?;
+                r.eat_heredoc(feeder, core, lineno)?;
             }
         }
         Ok(())

src/elements/command/simple.rs

@@ -99,6 +99,10 @@ impl Command for SimpleCommand {
     fn force_fork(&self) -> bool {
         self.force_fork
     }
+
+    fn get_lineno(&mut self) -> usize {
+        self.lineno
+    }
 }
 
 impl SimpleCommand {

src/elements/command/simple/.run_internal.rs.swp

@@ -9,7 +9,7 @@ use crate::elements::word::WordMode;
 use crate::error::exec::ExecError;
 use crate::error::parse::ParseError;
 use crate::utils::{exit, file_check};
-use crate::{Feeder, ShellCore};
+use crate::{error, Feeder, ShellCore};
 use nix::unistd;
 use nix::unistd::ForkResult;
 use std::fs::{File, OpenOptions};
@@ -282,6 +282,7 @@ impl Redirect {
         &mut self,
         feeder: &mut Feeder,
         core: &mut ShellCore,
+        lineno: usize,
     ) -> Result<(), ParseError> {
         let remove_tab = self.symbol == "<<-";
         let end = match self.right.eval_as_value(core) {
@@ -297,7 +298,11 @@ impl Redirect {
 
         loop {
             if feeder.is_empty() {
-                feeder.feed_additional_line(core)?;
+                if feeder.feed_additional_line(core).is_err() {
+                    let msg = format!("warning: here-document at line {} delimited by end-of-file (wanted {})", lineno, &self.right.text);
+                    error::print(&msg, core);
+                    break;
+                }
 
                 if remove_tab {
                     let len = feeder.scanner_tabs();