Handle idris errors

bin/iutils

@@ -9,7 +9,7 @@ my $ide = IUtils::IDEMode.new();
 my @res = $ide.version;
 say @res[0][1][1][1][0];
 
-@res = $ide.load-file: '.tmp/test.idr';
+@res = $ide.load-file: '.tmp/test.nope';
 say @res.raku;
 
 @res = $ide.interpret: ':exec works >>= print';

lib/IUtils.rakumod

@@ -1,3 +1,4 @@
+#| Utilities for interacting with idris and associated tooling
 unit module IUtils;
 
 need IUtils::IDEMode;

lib/IUtils/IDEMode.rakumod

@@ -1,10 +1,16 @@
+#| Interaction wtih Idris 2's IDE Mode
 unit class IUtils::IDEMode;
 
+#| The underlying idris process
 has $!process;
+#| The port number we are connected via
 has $!port;
+#| The socket we are connected via
 has $!socket;
+#| The next request id
 has $!request-id = 0;
 
+#| Grammar for S-Expressions
 grammar SExp {
     rule TOP { <sexp> }
 
@@ -22,6 +28,7 @@ grammar SExp {
     }
 }
 
+#| Convert a parsed S-Expression into a list of lists
 class SExp::Actions {
     method TOP($/) { make $<sexp>.made }
 
@@ -36,11 +43,7 @@ class SExp::Actions {
     }
 
     method str-content($/) {
-        if $/.Str && $0 {
-            make $/.Str.subst(/\\(.)/, {$0}, :g)
-        } else {
-            make ''
-        }
+        make $/.Str.subst(/\\(.)/, {$0}, :g)
     }
 }
 
@@ -74,6 +77,7 @@ submethod TWEAK {
     say "IDE Protocol Version: $major.$minor";
 }
 
+#| Capture and parse the initial protocol version message
 method process-protocol-version() {
     my @resp = self.read-sexp();
     if @resp[0] eq ':protocol-version' {
@@ -82,13 +86,18 @@ method process-protocol-version() {
     die "Expected protocol version, got: ", @resp;
 }
 
+#| Read one sexp from the IDE server
 method read-sexp() {
     my $len = $!socket.read(6).decode('utf8');
     my $msg = $!socket.read(:bin, $len.parse-base(16)).decode('utf8');
-    # say "Got: ", $len, $msg;
     SExp.parse($msg, actions => SExp::Actions).made
 }
 
+#| Send a command to the IDE server, and collect all the responses to that
+#| command
+#|
+#| For convinence, automatically symbolizes the first argument, and will wrap
+#| the command in parens if there is more than one argument
 method send-command(*@cmd) {
     my $id = ++$!request-id;
     my $cmd-str;
@@ -98,7 +107,6 @@ method send-command(*@cmd) {
         $cmd-str = "(" ~ (":" ~ @cmd[0]) ~ " $id)";
     }
     my $len = sprintf("%06x", $cmd-str.chars);
-    # say "Sending: ", $len, $cmd-str;
     $!socket.print($len ~ $cmd-str);
 
     my @responses;
@@ -106,12 +114,17 @@ method send-command(*@cmd) {
         my $resp = self.read-sexp();
         @responses.push($resp);
 
+        if $resp[1][0] eq ':error' && $resp[2] == $id {
+            die "Idris error: ", $resp[1][1];
+        }
+
         if $resp[0] eq ':return' && $resp[2] == $id {
             return @responses;
         }
     }
 }
 
+#| Wrapper for :load-file command
 method load-file($filename, $line-number?){
     if $line-number {
         self.send-command('load-file', "\"$filename\"", $line-number.Str)
@@ -120,28 +133,35 @@ method load-file($filename, $line-number?){
     }
 }
 
+#| Wrapper for :cd command
 method cd($filepath) {
     self.send-command('cd', "\"$filepath\"")
 }
 
+#| Wrapper for :interpret command
 method interpret($cmd) {
     self.send-command('interpret', "\"$cmd\"")
 }
 
+#| Wrapper for :type-of command
 method type-of($item) {
     self.send-command('type-of', "\"$item\"")
 }
 
+#| Wrapper for :docs-for command
 method docs-for($item) {
     self.send-command('docs-for', "\"$item\"")
 }
 
+#| Wrapper for :browse-namespace command
+#|
+#| Will import $namespace before browsing it to ensure we get results
 method browse-namespace($namespace) {
-    # Import the namespace first to make sure this works properly
     self.interpret: ":import $namespace";
     self.send-command('browse-namespace', "\"$namespace\"")
 }
 
+#| Wrapper for :version command
 method version() {
     self.send-command('version')
 }