add parsing of given repl line

src/lang.zig

@@ -3,10 +3,8 @@ const std = @import("std");
 const plugin = @import("plugin.zig");
 
 pub const ParseError = error{
-    NoCommandGiven,
-    UnknownCommand,
+    OutOfMemory,
     ArgRequired,
-    FloatParseFail,
     ParseFail,
 };
 
@@ -261,7 +259,7 @@ pub const Lang = struct {
 
     fn expectAny(self: *Lang, count: usize, args: ArgList) !void {
         if (args.len != count) {
-            std.debug.warn("expected {} arguments, found {}\n", count, args.len);
+            self.doError("expected {} arguments, found {}", count, args.len);
             return error.ArgRequired;
         }
     }
@@ -274,7 +272,7 @@ pub const Lang = struct {
         var i: usize = 0;
 
         if (args.len != count) {
-            std.debug.warn("expected {} arguments, found {}\n", count, args.len);
+            self.doError("expected {} arguments, found {}", count, args.len);
             return error.ArgRequired;
         }
 
@@ -319,7 +317,7 @@ pub const Lang = struct {
         self.has_error = true;
     }
 
-    pub fn parse(self: *Lang, data: []const u8) !CommandList {
+    pub fn parse(self: *Lang, data: []const u8) ParseError!CommandList {
         var splitted_it = std.mem.separate(data, ";");
         try self.fillKeywords();
         var cmds = CommandList.init(self.allocator);
@@ -359,7 +357,7 @@ pub const Lang = struct {
             // construct final Command based on command
             var cmd = Command{ .command = ctype, .args = args };
             self.validateCommand(cmd) catch |err| {
-                self.doError("Unknown command '{}' (length {})", command, command.len);
+                //self.doError("error validating command '{}': {}", command, err);
                 continue;
             };
 

src/main.zig

@@ -8,6 +8,9 @@ test "scritcher" {
 }
 
 pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
+    var stdout_file = try std.io.getStdOut();
+    const stdout = &stdout_file.outStream().stream;
+
     const scri_path = try (args_it.next(allocator) orelse @panic("expected scri path"));
 
     // the thing here is that 'load :0' would load the scri_path, since we
@@ -29,6 +32,9 @@ pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
 
     // TODO start a runner and keep it hot
 
+    var lang = langs.Lang.init(allocator);
+    defer lang.deinit();
+
     while (true) {
         try stdout.print("> ");
 
@@ -38,7 +44,11 @@ pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
             return err;
         };
 
-        // TODO parse the line through langs.parse, then add the command to cmds
+        var cmds_parsed = lang.parse(line) catch |err| {
+            std.debug.warn("repl: error while parsing: {}\n", err);
+            continue;
+        };
+        try cmds.append(cmds_parsed.at(0));
 
         // TODO save the line to scri_file? or should we have a special `push`
         // to do so?