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feat: lex floating point numbers with scientific notation

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This commit is contained in:
Araozu 2024-11-17 07:56:29 -05:00
parent b0aec04235
commit 8dccf94ad5
1 changed files with 18 additions and 0 deletions
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18
src/01_lexic/number.zig
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@ -146,6 +146,12 @@ fn floating_point(input: []const u8, cap: usize, token_start: usize, period_pos:
current_pos += 1;
}
// check if the current character is a `e`,
// if so lex a scientific number
if (current_pos < cap and input[current_pos] == 'e') {
return scientific(input, cap, token_start, current_pos);
}
// return the matched fp number
return .{
Token.init(input[token_start..current_pos], TokenType.Float, token_start),
@ -448,3 +454,15 @@ test "should fail on incomplete scientific number" {
try std.testing.expect(false);
}
test "should lex floating scientific number" {
const input = "0.58e+3";
const result = try lex(input, input.len, 0);
if (result) |tuple| {
const r = tuple[0];
try std.testing.expectEqualDeep("0.58e+3", r.value);
} else {
try std.testing.expect(false);
}
}