[ICE] Newline in string

[pythongirl325]

I think you are incorrectly checking how to handle newlines in strings. Should be pretty easy to fix.

Code

a="\\
x"

Expected behavior

Some errors about how the newline is incorrect I think

Backtrace

    Finished dev [unoptimized + debuginfo] target(s) in 0.09s
     Running `target/debug/swcc --color=never test.c`
The application panicked (crashed).
Message:  called `Result::unwrap()` on an `Err` value: NewlineInString
Location: src/lex/mod.rs:1048

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Run with RUST_BACKTRACE=full to include source snippets.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BACKTRACE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
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 7: core::result::Result<T,E>::unwrap::hd66ef19e0f7f59d8
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/result.rs:1005
 8: saltwater::lex::<impl saltwater::data::lex::LiteralToken>::parse::{{closure}}::h3345e733c5644260
    at /home/gis/code/saltwater/src/lex/mod.rs:1048
 9: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once::h3007bb5ae4c51e14
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/ops/function.rs:285
10: core::option::Option<T>::map::hab2f436146429123
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/option.rs:456
11: <core::iter::adapters::Map<I,F> as core::iter::traits::iterator::Iterator>::next::h942cda433d4d6b2c
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/iter/adapters/mod.rs:805
12: <core::iter::adapters::fuse::Fuse<I> as core::iter::adapters::fuse::FuseImpl<I>>::next::hc1993fad8bcc23ea
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/iter/adapters/fuse.rs:403
13: <core::iter::adapters::fuse::Fuse<I> as core::iter::traits::iterator::Iterator>::next::h17c2084c02c0559a
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/iter/adapters/fuse.rs:69
14: <core::iter::adapters::flatten::FlattenCompat<I,U> as core::iter::traits::iterator::Iterator>::next::hc467cd4edc4a6043
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/iter/adapters/flatten.rs:272
15: <core::iter::adapters::flatten::FlatMap<I,U,F> as core::iter::traits::iterator::Iterator>::next::h1989ed8ecca54b80
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/iter/adapters/flatten.rs:55
16: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::from_iter::h78d22dc77c8c11fd
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/liballoc/vec.rs:2069
17: <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h59fb46d0c777f78e
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/liballoc/vec.rs:1981
18: core::iter::traits::iterator::Iterator::collect::h7b04d7e743695669
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/iter/traits/iterator.rs:1660
19: saltwater::lex::<impl saltwater::data::lex::LiteralToken>::parse::h0686bad9d6a474c4
    at /home/gis/code/saltwater/src/lex/mod.rs:1044
20: saltwater::parse::expr::<impl saltwater::parse::Parser<I>>::primary_expr::hcfcc25806583f061
    at /home/gis/code/saltwater/src/parse/expr.rs:264
21: saltwater::parse::expr::<impl saltwater::parse::Parser<I>>::unary_expr::h1c65181a0523844e
    at /home/gis/code/saltwater/src/parse/expr.rs:235
22: saltwater::parse::expr::<impl saltwater::parse::Parser<I>>::custom_expr::hd4946a00c877df06
    at /home/gis/code/saltwater/src/parse/expr.rs:134
23: saltwater::parse::expr::<impl saltwater::parse::Parser<I>>::assignment_expr::hba24ea6d93e799ba
    at /home/gis/code/saltwater/src/parse/expr.rs:127
24: saltwater::parse::decl::<impl saltwater::parse::Parser<I>>::initializer::h3ac02ec66c091314
    at /home/gis/code/saltwater/src/parse/decl.rs:654
25: saltwater::parse::decl::<impl saltwater::parse::Parser<I>>::init_declarator::hd8bbe79dd1104369
    at /home/gis/code/saltwater/src/parse/decl.rs:351
26: saltwater::parse::decl::<impl saltwater::parse::Parser<I>>::external_declaration::h2157a6c70b729e05
    at /home/gis/code/saltwater/src/parse/decl.rs:58
27: <saltwater::parse::Parser<I> as core::iter::traits::iterator::Iterator>::next::h01b34dec7d042a69
    at /home/gis/code/saltwater/src/parse/mod.rs:119
28: <saltwater::analyze::Analyzer<T> as core::iter::traits::iterator::Iterator>::next::hb7aae02eae7cfe74
    at /home/gis/code/saltwater/src/analyze/mod.rs:95
29: <&mut I as core::iter::traits::iterator::Iterator>::next::h6ccd91b5947a96bc
    at /home/gis/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/iter/traits/iterator.rs:3258
30: saltwater::check_semantics::ha40a786b537cf457
    at /home/gis/code/saltwater/src/lib.rs:240
31: saltwater::compile::hf9937d5e5682c4bb
    at /home/gis/code/saltwater/src/lib.rs:271
32: swcc::aot_main::h6585910bd9a711ec
    at /home/gis/code/saltwater/src/main.rs:172
33: swcc::real_main::h4a7b3b4b2e8a6631
    at /home/gis/code/saltwater/src/main.rs:161
34: swcc::main::h680d2fa7efb5314a
    at /home/gis/code/saltwater/src/main.rs:273
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