chore: small changes

CHANGELOG.md

@@ -24,7 +24,8 @@ Now in Zig!
 
 ## v0.0.1
 
-- [ ] 
+- [x] Lex integers & floating point numbers
+- [ ]
 
 
 

build.zig.zon

@@ -10,12 +10,12 @@
 
     // This is a [Semantic Version](https://semver.org/).
     // In a future version of Zig it will be used for package deduplication.
-    .version = "0.0.0",
+    .version = "0.0.1",
 
     // This field is optional.
     // This is currently advisory only; Zig does not yet do anything
     // with this value.
-    //.minimum_zig_version = "0.11.0",
+    .minimum_zig_version = "0.13.0",
 
     // This field is optional.
     // Each dependency must either provide a `url` and `hash`, or a `path`.

src/01_lexic/number.zig

@@ -172,12 +172,18 @@ fn scientific(input: []const u8, cap: usize, token_start: usize, exp_pos: usize)
         return LexError.IncompleteScientificNumber;
     }
     current_pos += 1;
+    const digits_start = current_pos;
 
-    // lex digits
+    // lex at least 1 digit
     while (current_pos < cap and utils.is_decimal_digit(input[current_pos])) {
         current_pos += 1;
     }
 
+    // if there is no difference, no extra digits were lexed.
+    if (digits_start == current_pos) {
+        return LexError.IncompleteScientificNumber;
+    }
+
     // return the scientific number
     return .{
         Token.init(input[token_start..current_pos], TokenType.Float, token_start),
@@ -455,6 +461,23 @@ test "should fail on incomplete scientific number" {
     try std.testing.expect(false);
 }
 
+test "should fail on incomplete scientific number 2" {
+    const input = "123e+";
+    const result = lex(input, input.len, 0) catch |err| {
+        try std.testing.expect(err == token.LexError.IncompleteScientificNumber);
+        return;
+    };
+
+    if (result) |tuple| {
+        const r = tuple[0];
+        std.debug.print("{s}\n", .{r.value});
+    } else {
+        std.debug.print("nil returned", .{});
+    }
+
+    try std.testing.expect(false);
+}
+
 test "should lex floating scientific number" {
     const input = "0.58e+3";
     const result = try lex(input, input.len, 0);