Update changelog

Allow syscalls in infix operations
Fix function invocation stack underflow
2025-12-11 02:26:20 -07:00 · 2025-12-11 02:24:01 -07:00 · 2025-12-11 01:03:43 -07:00 · 2025-12-10 18:01:21 -07:00 · 2025-12-10 18:00:20 -07:00 · 2025-12-10 13:39:58 -07:00
31 changed files with 1995 additions and 1825 deletions
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,34 @@
 # Changelog

+[0.2.3]
+
+- Fixed stack underflow with function invocations
+  - They are still "heavy", but they should work as expected now
+- Fixed issue where syscall functions were not allowed as infix operators
+
+[0.2.2]
+
+- Fixed some formatting issues when converting Markdown to Text Mesh Pro for
+  Stationpedia
+- Added support for ternary expressions
+  - `let i = someValue ? 4 : 5;`
+  - `i = someValue ? 4 : 5;`
+  - This greedily evaluates both sides, so side effects like calling functions
+    is not recommended i.e.
+    - `i = someValue : doSomething() : doSomethingElse();`
+    - Both sides will be evaluated before calling the `select` instruction
+
+[0.2.1]
+
+- Added support for `loadSlot` and `setSlot`
+- Fixed bug where syscalls like `max(1, 2)` were not allowed in assignment expressions
+
+[0.2.0]
+
+- Completely re-wrote the tokenizer to use `logos`
+- Changed AST and Token data structures to use `Cow` instead of `String`
+- Updated error reporting to use `thiserror` instead of `quickerror`
+
 [0.1.2]

 - Removed references to `Unitask`
--- a/ModData/About/About.xml
+++ b/ModData/About/About.xml
@@ -2,7 +2,7 @@
 <ModMetadata xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Name>Slang</Name>
  <Author>JoeDiertay</Author>
-  <Version>0.1.2</Version>
+  <Version>0.2.3</Version>
  <Description>
 [h1]Slang: High-Level Programming for Stationeers[/h1]

--- a/csharp_mod/Extensions.cs
+++ b/csharp_mod/Extensions.cs
@@ -55,7 +55,7 @@ public static unsafe class SlangExtensions

            var color = GetColorForKind(token.token_kind);

-            int colIndex = token.column - 1;
+            int colIndex = token.column;
            if (colIndex < 0)
                colIndex = 0;

@@ -100,10 +100,10 @@ public static unsafe class SlangExtensions
                    Severity = item.severity,
                    Range = new Slang.Range
                    {
-                        EndCol = Math.Max(item.range.end_col - 2, 0),
-                        EndLine = item.range.end_line - 1,
-                        StartCol = Math.Max(item.range.start_col - 2, 0),
-                        StartLine = item.range.end_line - 1,
+                        EndCol = Math.Max(item.range.end_col, 0),
+                        EndLine = item.range.end_line,
+                        StartCol = Math.Max(item.range.start_col, 0),
+                        StartLine = item.range.start_line,
                    },
                }
            );
@@ -134,6 +134,9 @@ public static unsafe class SlangExtensions
            case 7: // (punctuation)
                return SlangFormatter.ColorDefault;

+            case 8: // Comments
+                return SlangFormatter.ColorComment;
+
            case 10: // (syscalls)
                return SlangFormatter.ColorFunction;

--- a/csharp_mod/Patches.cs
+++ b/csharp_mod/Patches.cs
@@ -12,6 +12,7 @@ public static class SlangPatches
 {
    private static ProgrammableChipMotherboard? _currentlyEditingMotherboard;
    private static AsciiString? _motherboardCachedCode;
+    private static Guid? _currentlyEditingGuid;

    [HarmonyPatch(
        typeof(ProgrammableChipMotherboard),
@@ -32,11 +33,13 @@ public static class SlangPatches
            return;
        }

-        var thisRef = Guid.NewGuid();
+        var thisRef = _currentlyEditingGuid ?? Guid.NewGuid();

        // Ensure we cache this compiled code for later retreival.
        GlobalCode.SetSource(thisRef, result);

+        _currentlyEditingGuid = null;
+
        // Append REF to the bottom
        compiled += $"\n{GlobalCode.SLANG_REF}{thisRef}";
        result = compiled;
@@ -77,6 +80,7 @@ public static class SlangPatches
            return;
        }

+        _currentlyEditingGuid = sourceRef;
        var slangSource = GlobalCode.GetSource(sourceRef);

        if (string.IsNullOrEmpty(slangSource))
@@ -223,6 +227,7 @@ public static class SlangPatches

        _currentlyEditingMotherboard = null;
        _motherboardCachedCode = null;
+        _currentlyEditingGuid = null;
    }

    [HarmonyPatch(typeof(Stationpedia), nameof(Stationpedia.Regenerate))]
--- a/csharp_mod/TmpFormatter.cs
+++ b/csharp_mod/TmpFormatter.cs
@@ -26,12 +26,18 @@ public static class TextMeshProFormatter
            RegexOptions.Singleline
        );

-        // 3. Handle Headers (## Header)
-        // Convert ## Header to large bold text
        text = Regex.Replace(
            text,
-            @"^##(\s+)?(.+)$",
-            "<size=120%><b>$1</b></size>",
+            @"^\s*##\s+(.+)$",
+            "<size=110%><color=#ffffff><b>$1</b></color></size>",
+            RegexOptions.Multiline
+        );
+
+        // 3. Handle # Headers SECOND (General)
+        text = Regex.Replace(
+            text,
+            @"^\s*#\s+(.+)$",
+            "<size=120%><color=#ffffff><b>$1</b></color></size>",
            RegexOptions.Multiline
        );

--- a/csharp_mod/stationeersSlang.csproj
+++ b/csharp_mod/stationeersSlang.csproj
@@ -5,7 +5,7 @@
    <Nullable>enable</Nullable>
    <AssemblyName>StationeersSlang</AssemblyName>
    <Description>Slang Compiler Bridge</Description>
-    <Version>0.1.2</Version>
+    <Version>0.2.3</Version>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
    <LangVersion>latest</LangVersion>
  </PropertyGroup>
--- a/rust_compiler/Cargo.lock
+++ b/rust_compiler/Cargo.lock
@@ -28,6 +28,15 @@ dependencies = [
 "version_check",
 ]

+[[package]]
+name = "aho-corasick"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "anstream"
 version = "0.6.21"
@@ -114,6 +123,12 @@ dependencies = [
 "windows-link",
 ]

+[[package]]
+name = "beef"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a8241f3ebb85c056b509d4327ad0358fbbba6ffb340bf388f26350aeda225b1"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -257,8 +272,8 @@ dependencies = [
 "lsp-types",
 "parser",
 "pretty_assertions",
- "quick-error",
 "rust_decimal",
+ "thiserror",
 "tokenizer",
 ]

@@ -327,6 +342,12 @@ dependencies = [
 "bitflags",
 ]

+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
 [[package]]
 name = "funty"
 version = "2.0.0"
@@ -434,6 +455,40 @@ version = "0.2.178"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37c93d8daa9d8a012fd8ab92f088405fb202ea0b6ab73ee2482ae66af4f42091"

+[[package]]
+name = "logos"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a790d11254054e5dc83902dba85d253ff06ceb0cfafb12be8773435cb9dfb4f4"
+dependencies = [
+ "logos-derive",
+]
+
+[[package]]
+name = "logos-codegen"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f60337c43a38313b58871f8d5d76872b8e17aa9d51fad494b5e76092c0ce05f5"
+dependencies = [
+ "beef",
+ "fnv",
+ "proc-macro2",
+ "quote",
+ "regex-automata",
+ "regex-syntax",
+ "rustc_version",
+ "syn 2.0.111",
+]
+
+[[package]]
+name = "logos-derive"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d151b2ae667f69e10b8738f5cac0c746faa22b2e15ea7e83b55476afec3767dc"
+dependencies = [
+ "logos-codegen",
+]
+
 [[package]]
 name = "lsp-types"
 version = "0.97.0"
@@ -516,7 +571,7 @@ dependencies = [
 "helpers",
 "lsp-types",
 "pretty_assertions",
- "quick-error",
+ "thiserror",
 "tokenizer",
 ]

@@ -593,12 +648,6 @@ dependencies = [
 "syn 1.0.109",
 ]

-[[package]]
-name = "quick-error"
-version = "2.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a993555f31e5a609f617c12db6250dedcac1b0a85076912c436e6fc9b2c8e6a3"
-
 [[package]]
 name = "quote"
 version = "1.0.42"
@@ -644,6 +693,23 @@ dependencies = [
 "getrandom",
 ]

+[[package]]
+name = "regex-automata"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5276caf25ac86c8d810222b3dbb938e512c55c6831a10f3e6ed1c93b84041f1c"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
+
 [[package]]
 name = "rend"
 version = "0.4.2"
@@ -843,7 +909,7 @@ checksum = "e3a9fe34e3e7a50316060351f37187a3f546bce95496156754b601a5fa71b76e"

 [[package]]
 name = "slang"
-version = "0.1.2"
+version = "0.2.3"
 dependencies = [
 "anyhow",
 "clap",
@@ -851,9 +917,9 @@ dependencies = [
 "helpers",
 "lsp-types",
 "parser",
- "quick-error",
 "rust_decimal",
 "safer-ffi",
+ "thiserror",
 "tokenizer",
 ]

@@ -926,6 +992,26 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"

+[[package]]
+name = "thiserror"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.111",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.10.0"
@@ -947,9 +1033,10 @@ version = "0.1.0"
 dependencies = [
 "anyhow",
 "helpers",
+ "logos",
 "lsp-types",
- "quick-error",
 "rust_decimal",
+ "thiserror",
 ]

 [[package]]
--- a/rust_compiler/Cargo.toml
+++ b/rust_compiler/Cargo.toml
@@ -1,13 +1,13 @@
 [package]
 name = "slang"
-version = "0.1.2"
+version = "0.2.3"
 edition = "2021"

 [workspace]
 members = ["libs/*"]

 [workspace.dependencies]
-quick-error = "2"
+thiserror = "2"
 rust_decimal = "1"
 safer-ffi = { version = "0.1" }  # Safely share structs in memory between C# and Rust
 lsp-types = { version = "0.97" } # Allows for LSP style reporting to the frontend
@@ -36,13 +36,13 @@ crate-type = ["cdylib", "rlib"]
 [dependencies]
 clap = { version = "^4.5", features = ["derive"] }
 lsp-types = { workspace = true }
-quick-error = { workspace = true }
+thiserror = { workspace = true }
 rust_decimal = { workspace = true }
 tokenizer = { path = "libs/tokenizer" }
 parser = { path = "libs/parser" }
 compiler = { path = "libs/compiler" }
 helpers = { path = "libs/helpers" }
 safer-ffi = { workspace = true }
+anyhow = { version = "^1.0", features = ["backtrace"] }

 [dev-dependencies]
-anyhow = { version = "^1.0", features = ["backtrace"] }
--- a/rust_compiler/libs/compiler/Cargo.toml
+++ b/rust_compiler/libs/compiler/Cargo.toml
@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2024"

 [dependencies]
-quick-error = { workspace = true }
+thiserror = { workspace = true }
 parser = { path = "../parser" }
 tokenizer = { path = "../tokenizer" }
 helpers = { path = "../helpers" }
--- a/rust_compiler/libs/compiler/src/test/binary_expression.rs
+++ b/rust_compiler/libs/compiler/src/test/binary_expression.rs
@@ -1,9 +1,10 @@
 use crate::compile;
+use anyhow::Result;
 use indoc::indoc;
 use pretty_assertions::assert_eq;

 #[test]
-fn simple_binary_expression() -> anyhow::Result<()> {
+fn simple_binary_expression() -> Result<()> {
    let compiled = compile! {
        debug
        "
@@ -26,7 +27,7 @@ fn simple_binary_expression() -> anyhow::Result<()> {
 }

 #[test]
-fn nested_binary_expressions() -> anyhow::Result<()> {
+fn nested_binary_expressions() -> Result<()> {
    let compiled = compile! {
        debug
        "
@@ -51,6 +52,8 @@ fn nested_binary_expressions() -> anyhow::Result<()> {
            add r1 r10 r9
            mul r2 r1 r8
            move r15 r2
+            j L1
+            L1:
            sub r0 sp 1
            get ra db r0
            sub sp sp 1
@@ -71,7 +74,7 @@ fn nested_binary_expressions() -> anyhow::Result<()> {
 }

 #[test]
-fn stress_test_constant_folding() -> anyhow::Result<()> {
+fn stress_test_constant_folding() -> Result<()> {
    let compiled = compile! {
        debug
        "
@@ -94,7 +97,7 @@ fn stress_test_constant_folding() -> anyhow::Result<()> {
 }

 #[test]
-fn test_constant_folding_with_variables_mixed_in() -> anyhow::Result<()> {
+fn test_constant_folding_with_variables_mixed_in() -> Result<()> {
    let compiled = compile! {
        debug
        r#"
@@ -120,3 +123,55 @@ fn test_constant_folding_with_variables_mixed_in() -> anyhow::Result<()> {

    Ok(())
 }
+
+#[test]
+fn test_ternary_expression() -> Result<()> {
+    let compiled = compile! {
+        debug
+        r#"
+        let i = 1 > 2 ? 15 : 20;
+        "#
+    };
+
+    assert_eq!(
+        compiled,
+        indoc! {
+            "
+            j main
+            main:
+            sgt r1 1 2
+            select r2 r1 15 20
+            move r8 r2 #i
+            "
+        }
+    );
+
+    Ok(())
+}
+
+#[test]
+fn test_ternary_expression_assignment() -> Result<()> {
+    let compiled = compile! {
+        debug
+        r#"
+        let i = 0;
+        i = 1 > 2 ? 15 : 20;
+        "#
+    };
+
+    assert_eq!(
+        compiled,
+        indoc! {
+            "
+            j main
+            main:
+            move r8 0 #i
+            sgt r1 1 2
+            select r2 r1 15 20
+            move r8 r2 #i
+            "
+        }
+    );
+
+    Ok(())
+}
--- a/rust_compiler/libs/compiler/src/test/declaration_function_invocation.rs
+++ b/rust_compiler/libs/compiler/src/test/declaration_function_invocation.rs
@@ -17,6 +17,7 @@ fn no_arguments() -> anyhow::Result<()> {
        j main
        doSomething:
        push ra
+        L1:
        sub r0 sp 1
        get ra db r0
        sub sp sp 1
@@ -34,14 +35,17 @@ fn no_arguments() -> anyhow::Result<()> {

 #[test]
 fn let_var_args() -> anyhow::Result<()> {
-    // !IMPORTANT this needs to be stabilized as it currently incorrectly calculates sp offset at
-    // both ends of the cleanup lifecycle
    let compiled = compile! {
        debug
        "
-        fn doSomething(arg1) {};
-        let arg1 = 123;
-        let i = doSomething(arg1);
+        fn mul2(arg1) {
+            return arg1 * 2;
+        };
+        loop {
+            let arg1 = 123;
+            let i = mul2(arg1);
+            i = i ** 2;
+        }
        "
    };

@@ -50,23 +54,31 @@ fn let_var_args() -> anyhow::Result<()> {
        indoc! {
            "
            j main
-            doSomething:
+            mul2:
            pop r8 #arg1
            push ra
+            mul r1 r8 2
+            move r15 r1
+            j L1
+            L1:
            sub r0 sp 1
            get ra db r0
            sub sp sp 1
            j ra
            main:
+            L2:
            move r8 123 #arg1
            push r8
            push r8
-            jal doSomething
+            jal mul2
            sub r0 sp 1
            get r8 db r0
            sub sp sp 1
            move r9 r15 #i
-            sub sp sp 1
+            pow r1 r9 2
+            move r9 r1 #i
+            j L2
+            L3:
            "
        }
    );
@@ -97,7 +109,9 @@ fn inline_literal_args() -> anyhow::Result<()> {
    let compiled = compile! {
        debug
        "
-        fn doSomething(arg1, arg2) {};
+        fn doSomething(arg1, arg2) {
+            return 5;
+        };
        let thisVariableShouldStayInPlace = 123;
        let returnedValue = doSomething(12, 34);
        "
@@ -112,6 +126,9 @@ fn inline_literal_args() -> anyhow::Result<()> {
            pop r8 #arg2
            pop r9 #arg1
            push ra
+            move r15 5 #returnValue
+            j L1
+            L1:
            sub r0 sp 1
            get ra db r0
            sub sp sp 1
@@ -126,7 +143,6 @@ fn inline_literal_args() -> anyhow::Result<()> {
            get r8 db r0
            sub sp sp 1
            move r9 r15 #returnedValue
-            sub sp sp 1
            "
        }
    );
@@ -154,6 +170,7 @@ fn mixed_args() -> anyhow::Result<()> {
            pop r8 #arg2
            pop r9 #arg1
            push ra
+            L1:
            sub r0 sp 1
            get ra db r0
            sub sp sp 1
@@ -168,7 +185,6 @@ fn mixed_args() -> anyhow::Result<()> {
            get r8 db r0
            sub sp sp 1
            move r9 r15 #returnValue
-            sub sp sp 1
            "
        }
    );
@@ -198,6 +214,8 @@ fn with_return_statement() -> anyhow::Result<()> {
            pop r8 #arg1
            push ra
            move r15 456 #returnValue
+            j L1
+            L1:
            sub r0 sp 1
            get ra db r0
            sub sp sp 1
@@ -233,6 +251,7 @@ fn with_negative_return_literal() -> anyhow::Result<()> {
            doSomething:
            push ra
            move r15 -1 #returnValue
+            L1:
            sub r0 sp 1
            get ra db r0
            sub sp sp 1
--- a/rust_compiler/libs/compiler/src/test/declaration_literal.rs
+++ b/rust_compiler/libs/compiler/src/test/declaration_literal.rs
@@ -120,7 +120,7 @@ fn test_boolean_return() -> anyhow::Result<()> {
        fn getTrue() {
            return true;
        };
-        
+
        let val = getTrue();
        "
    };
@@ -133,6 +133,8 @@ fn test_boolean_return() -> anyhow::Result<()> {
            getTrue:
            push ra
            move r15 1 #returnValue
+            j L1
+            L1:
            sub r0 sp 1
            get ra db r0
            sub sp sp 1
--- a/rust_compiler/libs/compiler/src/test/function_declaration.rs
+++ b/rust_compiler/libs/compiler/src/test/function_declaration.rs
@@ -21,6 +21,7 @@ fn test_function_declaration_with_spillover_params() -> anyhow::Result<()> {
            pop r13 #arg4
            pop r14 #arg3
            push ra
+            L1:
            sub r0 sp 1
            get ra db r0
            sub sp sp 3
@@ -31,6 +32,48 @@ fn test_function_declaration_with_spillover_params() -> anyhow::Result<()> {
    Ok(())
 }

+#[test]
+fn test_early_return() -> anyhow::Result<()> {
+    let compiled = compile!(debug r#"
+        // This is a test function declaration with no body
+        fn doSomething() {
+            if (1 == 1) {
+                return;
+            }
+            let i = 1 + 2;
+            return;
+        };
+        doSomething();
+    "#);
+
+    assert_eq!(
+        compiled,
+        indoc! {
+            "
+            j main
+            doSomething:
+            push ra
+            seq r1 1 1
+            beq r1 0 L2
+            j L1
+            L2:
+            move r8 3 #i
+            j L1
+            L1:
+            sub r0 sp 1
+            get ra db r0
+            sub sp sp 1
+            j ra
+            main:
+            jal doSomething
+            move r1 r15 #__binary_temp_2
+            "
+        }
+    );
+
+    Ok(())
+}
+
 #[test]
 fn test_function_declaration_with_register_params() -> anyhow::Result<()> {
    let compiled = compile!(debug r#"
@@ -47,6 +90,7 @@ fn test_function_declaration_with_register_params() -> anyhow::Result<()> {
            pop r8 #arg2
            pop r9 #arg1
            push ra
+            L1:
            sub r0 sp 1
            get ra db r0
            sub sp sp 1
--- a/rust_compiler/libs/compiler/src/test/math_syscall.rs
+++ b/rust_compiler/libs/compiler/src/test/math_syscall.rs
@@ -243,6 +243,32 @@ fn test_max() -> Result<()> {
    Ok(())
 }

+#[test]
+fn test_max_from_game() -> Result<()> {
+    let compiled = compile! {
+        debug
+        r#"
+        let item = 0;
+        item = max(1 + 2, 2);
+        "#
+    };
+
+    assert_eq!(
+        compiled,
+        indoc! {
+            "
+            j main
+            main:
+            move r8 0 #item
+            max r15 3 2
+            move r8 r15 #item
+            "
+        }
+    );
+
+    Ok(())
+}
+
 #[test]
 fn test_min() -> Result<()> {
    let compiled = compile! {
--- a/rust_compiler/libs/compiler/src/test/mod.rs
+++ b/rust_compiler/libs/compiler/src/test/mod.rs
@@ -22,7 +22,7 @@ macro_rules! compile {
    (result $source:expr) => {{
        let mut writer = std::io::BufWriter::new(Vec::new());
        let compiler = crate::Compiler::new(
-            parser::Parser::new(tokenizer::Tokenizer::from(String::from($source))),
+            parser::Parser::new(tokenizer::Tokenizer::from($source)),
            &mut writer,
            Some(crate::CompilerConfig { debug: true }),
        );
@@ -32,7 +32,7 @@ macro_rules! compile {
    (debug $source:expr) => {{
        let mut writer = std::io::BufWriter::new(Vec::new());
        let compiler = crate::Compiler::new(
-            parser::Parser::new(tokenizer::Tokenizer::from(String::from($source))),
+            parser::Parser::new(tokenizer::Tokenizer::from($source)),
            &mut writer,
            Some(crate::CompilerConfig { debug: true }),
        );
--- a/rust_compiler/libs/compiler/src/test/syscall.rs
+++ b/rust_compiler/libs/compiler/src/test/syscall.rs
@@ -157,3 +157,54 @@ fn test_load_from_device() -> anyhow::Result<()> {

    Ok(())
 }
+
+#[test]
+fn test_load_from_slot() -> anyhow::Result<()> {
+    let compiled = compile! {
+        debug
+        r#"
+        device airCon = "d0";
+
+        let setting = ls(airCon, 0, "Occupied");
+        "#
+    };
+
+    assert_eq!(
+        compiled,
+        indoc! {
+            "
+            j main
+            main:
+            ls r15 d0 0 Occupied
+            move r8 r15 #setting
+            "
+        }
+    );
+
+    Ok(())
+}
+
+#[test]
+fn test_set_slot() -> anyhow::Result<()> {
+    let compiled = compile! {
+        debug
+        r#"
+        device airCon = "d0";
+
+        ss(airCon, 0, "Occupied", true);
+        "#
+    };
+
+    assert_eq!(
+        compiled,
+        indoc! {
+            "
+            j main
+            main:
+            ss d0 0 Occupied 1
+            "
+        }
+    );
+
+    Ok(())
+}
--- a/rust_compiler/libs/compiler/src/v1.rs
+++ b/rust_compiler/libs/compiler/src/v1.rs
--- a/rust_compiler/libs/compiler/src/variable_manager.rs
+++ b/rust_compiler/libs/compiler/src/variable_manager.rs
@@ -5,28 +5,28 @@

 use lsp_types::{Diagnostic, DiagnosticSeverity};
 use parser::tree_node::{Literal, Span};
-use quick_error::quick_error;
-use std::collections::{HashMap, VecDeque};
+use std::{
+    borrow::Cow,
+    collections::{HashMap, VecDeque},
+};
+use thiserror::Error;

 const TEMP: [u8; 7] = [1, 2, 3, 4, 5, 6, 7];
 const PERSIST: [u8; 7] = [8, 9, 10, 11, 12, 13, 14];

-quick_error! {
-    #[derive(Debug)]
-    pub enum Error {
-        DuplicateVariable(var: String, span: Option<Span>) {
-            display("{var} already exists.")
-        }
-        UnknownVariable(var: String, span: Option<Span>) {
-            display("{var} does not exist.")
-        }
-        Unknown(reason: String, span: Option<Span>) {
-            display("{reason}")
-        }
-    }
+#[derive(Error, Debug)]
+pub enum Error<'a> {
+    #[error("{0} already exists.")]
+    DuplicateVariable(Cow<'a, str>, Option<Span>),
+
+    #[error("{0} does not exist.")]
+    UnknownVariable(Cow<'a, str>, Option<Span>),
+
+    #[error("{0}")]
+    Unknown(Cow<'a, str>, Option<Span>),
 }

-impl From<Error> for lsp_types::Diagnostic {
+impl<'a> From<Error<'a>> for lsp_types::Diagnostic {
    fn from(value: Error) -> Self {
        match value {
            Error::DuplicateVariable(_, span)
@@ -52,8 +52,8 @@ pub enum LocationRequest {
    Stack,
 }

-#[derive(Clone)]
-pub enum VariableLocation {
+#[derive(Clone, Debug)]
+pub enum VariableLocation<'a> {
    /// Represents a temporary register (r1 - r7)
    Temporary(u8),
    /// Represents a persistant register (r8 - r14)
@@ -61,20 +61,20 @@ pub enum VariableLocation {
    /// Represents a a stack offset (current stack - offset = variable loc)
    Stack(u16),
    /// Represents a constant value and should be directly substituted as such.
-    Constant(Literal),
+    Constant(Literal<'a>),
    /// Represents a device pin. This will contain the exact `d0-d5` string
-    Device(String),
+    Device(Cow<'a, str>),
 }

-pub struct VariableScope<'a> {
+pub struct VariableScope<'a, 'b> {
    temporary_vars: VecDeque<u8>,
    persistant_vars: VecDeque<u8>,
-    var_lookup_table: HashMap<String, VariableLocation>,
+    var_lookup_table: HashMap<Cow<'a, str>, VariableLocation<'a>>,
    stack_offset: u16,
-    parent: Option<&'a VariableScope<'a>>,
+    parent: Option<&'b VariableScope<'a, 'b>>,
 }

-impl<'a> Default for VariableScope<'a> {
+impl<'a, 'b> Default for VariableScope<'a, 'b> {
    fn default() -> Self {
        Self {
            parent: None,
@@ -86,7 +86,7 @@ impl<'a> Default for VariableScope<'a> {
    }
 }

-impl<'a> VariableScope<'a> {
+impl<'a, 'b> VariableScope<'a, 'b> {
    #[allow(dead_code)]
    pub const TEMP_REGISTER_COUNT: u8 = 7;
    pub const PERSIST_REGISTER_COUNT: u8 = 7;
@@ -94,22 +94,24 @@ impl<'a> VariableScope<'a> {
    pub const RETURN_REGISTER: u8 = 15;
    pub const TEMP_STACK_REGISTER: u8 = 0;

-    pub fn registers(&self) -> impl Iterator<Item = &u8> {
-        self.var_lookup_table
-            .values()
-            .filter(|val| {
-                matches!(
-                    val,
-                    VariableLocation::Temporary(_) | VariableLocation::Persistant(_)
-                )
-            })
-            .map(|loc| match loc {
-                VariableLocation::Persistant(reg) | VariableLocation::Temporary(reg) => reg,
-                _ => unreachable!(),
-            })
+    pub fn registers(&self) -> Vec<u8> {
+        let mut used = Vec::new();
+
+        for r in TEMP {
+            if !self.temporary_vars.contains(&r) {
+                used.push(r);
+            }
+        }
+
+        for r in PERSIST {
+            if !self.persistant_vars.contains(&r) {
+                used.push(r);
+            }
+        }
+        used
    }

-    pub fn scoped(parent: &'a VariableScope<'a>) -> Self {
+    pub fn scoped(parent: &'b VariableScope<'a, 'b>) -> Self {
        Self {
            parent: Option::Some(parent),
            temporary_vars: parent.temporary_vars.clone(),
@@ -126,12 +128,11 @@ impl<'a> VariableScope<'a> {
    /// to the stack.
    pub fn add_variable(
        &mut self,
-        var_name: impl Into<String>,
+        var_name: Cow<'a, str>,
        location: LocationRequest,
        span: Option<Span>,
-    ) -> Result<VariableLocation, Error> {
-        let var_name = var_name.into();
-        if self.var_lookup_table.contains_key(var_name.as_str()) {
+    ) -> Result<VariableLocation<'a>, Error<'a>> {
+        if self.var_lookup_table.contains_key(&var_name) {
            return Err(Error::DuplicateVariable(var_name, span));
        }
        let var_location = match location {
@@ -166,11 +167,10 @@ impl<'a> VariableScope<'a> {

    pub fn define_const(
        &mut self,
-        var_name: impl Into<String>,
-        value: Literal,
+        var_name: Cow<'a, str>,
+        value: Literal<'a>,
        span: Option<Span>,
-    ) -> Result<VariableLocation, Error> {
-        let var_name = var_name.into();
+    ) -> Result<VariableLocation<'a>, Error<'a>> {
        if self.var_lookup_table.contains_key(&var_name) {
            return Err(Error::DuplicateVariable(var_name, span));
        }
@@ -183,13 +183,11 @@ impl<'a> VariableScope<'a> {

    pub fn get_location_of(
        &self,
-        var_name: impl Into<String>,
+        var_name: &Cow<'a, str>,
        span: Option<Span>,
-    ) -> Result<VariableLocation, Error> {
-        let var_name = var_name.into();
-
+    ) -> Result<VariableLocation<'a>, Error<'a>> {
        // 1. Check this scope
-        if let Some(var) = self.var_lookup_table.get(var_name.as_str()) {
+        if let Some(var) = self.var_lookup_table.get(var_name) {
            if let VariableLocation::Stack(inserted_at_offset) = var {
                // Return offset relative to CURRENT sp
                return Ok(VariableLocation::Stack(
@@ -210,7 +208,7 @@ impl<'a> VariableScope<'a> {
            return Ok(loc);
        }

-        Err(Error::UnknownVariable(var_name, span))
+        Err(Error::UnknownVariable(var_name.clone(), span))
    }

    pub fn has_parent(&self) -> bool {
@@ -220,11 +218,10 @@ impl<'a> VariableScope<'a> {
    #[allow(dead_code)]
    pub fn free_temp(
        &mut self,
-        var_name: impl Into<String>,
+        var_name: Cow<'a, str>,
        span: Option<Span>,
-    ) -> Result<(), Error> {
-        let var_name = var_name.into();
-        let Some(location) = self.var_lookup_table.remove(var_name.as_str()) else {
+    ) -> Result<(), Error<'a>> {
+        let Some(location) = self.var_lookup_table.remove(&var_name) else {
            return Err(Error::UnknownVariable(var_name, span));
        };

@@ -234,7 +231,7 @@ impl<'a> VariableScope<'a> {
            }
            VariableLocation::Persistant(_) => {
                return Err(Error::UnknownVariable(
-                    String::from("Attempted to free a `let` variable."),
+                    Cow::from("Attempted to free a `let` variable."),
                    span,
                ));
            }
--- a/rust_compiler/libs/compiler/test_files/script.slang
+++ b/rust_compiler/libs/compiler/test_files/script.slang
@@ -0,0 +1,41 @@
+// Pressure numbers are in KPa
+
+device self = "db";
+device emergencyRelief = "d0";
+device greenhouseSensor = "d1";
+device recycleValve = "d2";
+
+const MAX_INTERIOR_PRESSURE = 80;
+const MAX_INTERIOR_TEMP = 28c;
+const MIN_INTERIOR_PRESSURE = 75;
+const MIN_INTERIOR_TEMP = 25c;
+const daylightSensor = 1076425094;
+const growLight = hash("StructureGrowLight");
+const wallLight = hash("StructureLightLong");
+const lightRound = hash("StructureLightRound");
+
+let shouldPurge = false;
+
+loop {
+  let interiorPress = greenhouseSensor.Pressure;
+  let interiorTemp = greenhouseSensor.Temperature;
+  
+  shouldPurge = (
+    interiorPress > MAX_INTERIOR_PRESSURE ||
+    interiorTemp > MAX_INTERIOR_TEMP
+    ) || shouldPurge;
+
+  emergencyRelief.On = shouldPurge;
+  recycleValve.On = !shouldPurge;
+
+  if (shouldPurge && (interiorPress < MIN_INTERIOR_PRESSURE && interiorTemp < MIN_INTERIOR_TEMP)) {
+    shouldPurge = false;
+  }
+
+  let solarAngle = lb(daylightSensor, "SolarAngle", "Average");
+  let isDaylight = solarAngle < 90;
+
+  sb(growLight, "On", isDaylight);
+  sb(wallLight, "On", !isDaylight);
+  sb(lightRound, "On", !isDaylight);
+}
--- a/rust_compiler/libs/helpers/src/macros.rs
+++ b/rust_compiler/libs/helpers/src/macros.rs
@@ -3,15 +3,10 @@ macro_rules! documented {
    // -------------------------------------------------------------------------
    // Internal Helper: Filter doc comments
    // -------------------------------------------------------------------------
-
-    // Case 1: Doc comment. Return Some("string").
-    // We match the specific structure of a doc attribute.
    (@doc_filter #[doc = $doc:expr]) => {
        Some($doc)
    };

-    // Case 2: Other attributes (derives, etc.). Return None.
-    // We catch any other token sequence inside the brackets.
    (@doc_filter #[$($attr:tt)*]) => {
        None
    };
@@ -30,23 +25,59 @@ macro_rules! documented {
    };

    // -------------------------------------------------------------------------
-    // Main Macro Entry Point
+    // Entry Point 1: Enum with a single Lifetime (e.g. enum Foo<'a>)
+    // -------------------------------------------------------------------------
+    (
+        $(#[$enum_attr:meta])* $vis:vis enum $name:ident < $lt:lifetime > {
+            $($body:tt)*
+        }
+    ) => {
+        documented!(@generate
+            meta: [$(#[$enum_attr])*],
+            vis: [$vis],
+            name: [$name],
+            generics: [<$lt>],
+            body: [$($body)*]
+        );
+    };
+
+    // -------------------------------------------------------------------------
+    // Entry Point 2: Regular Enum (No Generics)
    // -------------------------------------------------------------------------
    (
        $(#[$enum_attr:meta])* $vis:vis enum $name:ident {
+            $($body:tt)*
+        }
+    ) => {
+        documented!(@generate
+            meta: [$(#[$enum_attr])*],
+            vis: [$vis],
+            name: [$name],
+            generics: [],
+            body: [$($body)*]
+        );
+    };
+
+    // -------------------------------------------------------------------------
+    // Code Generator (Shared Logic)
+    // -------------------------------------------------------------------------
+    (@generate
+        meta: [$(#[$enum_attr:meta])*],
+        vis: [$vis:vis],
+        name: [$name:ident],
+        generics: [$($generics:tt)*],
+        body: [
            $(
-                // Capture attributes as a sequence of token trees inside brackets
-                // to avoid "local ambiguity" and handle multi-token attributes (like doc="...").
                $(#[ $($variant_attr:tt)* ])*
                $variant:ident
                $( ($($tuple:tt)*) )?
                $( {$($structure:tt)*} )?
            ),* $(,)?
-        }
+        ]
    ) => {
-        // 1. Generate the actual Enum definition
+        // 1. Generate the Enum Definition
        $(#[$enum_attr])*
-        $vis enum $name {
+        $vis enum $name $($generics)* {
            $(
                $(#[ $($variant_attr)* ])*
                $variant
@@ -55,20 +86,19 @@ macro_rules! documented {
            )*
        }

-        // 2. Implement the Documentation Trait
-        impl Documentation for $name {
+        // 2. Implement Documentation Trait
+        // We apply the captured generics (e.g., <'a>) to both the impl and the type
+        impl $($generics)* Documentation for $name $($generics)* {
            fn docs(&self) -> String {
                match self {
                    $(
                        documented!(@arm $name $variant $( ($($tuple)*) )? $( {$($structure)*} )? ) => {
-                            // Create a temporary array of Option<&str> for all attributes
                            let doc_lines: &[Option<&str>] = &[
                                $(
                                    documented!(@doc_filter #[ $($variant_attr)* ])
                                ),*
                            ];

-                            // Filter out the Nones (non-doc attributes), join, and return
                            doc_lines.iter()
                                .filter_map(|&d| d)
                                .collect::<Vec<_>>()
@@ -80,7 +110,6 @@ macro_rules! documented {
                }
            }

-            // 3. Implement Static Documentation Provider
            #[allow(dead_code)]
            fn get_all_documentation() -> Vec<(&'static str, String)> {
                vec![
@@ -88,7 +117,6 @@ macro_rules! documented {
                        (
                            stringify!($variant),
                            {
-                                // Re-use the same extraction logic
                                let doc_lines: &[Option<&str>] = &[
                                    $(
                                        documented!(@doc_filter #[ $($variant_attr)* ])
--- a/rust_compiler/libs/helpers/src/syscall.rs
+++ b/rust_compiler/libs/helpers/src/syscall.rs
@@ -9,9 +9,11 @@ macro_rules! with_syscalls {
            "load",
            "loadBatched",
            "loadBatchedNamed",
+            "loadSlot",
            "set",
            "setBatched",
            "setBatchedNamed",
+            "setSlot",
            "acos",
            "asin",
            "atan",
@@ -32,9 +34,11 @@ macro_rules! with_syscalls {
            "l",
            "lb",
            "lbn",
+            "ls",
            "s",
            "sb",
-            "sbn"
+            "sbn",
+            "ss"
        );
    };
 }
--- a/rust_compiler/libs/parser/Cargo.toml
+++ b/rust_compiler/libs/parser/Cargo.toml
@@ -4,10 +4,10 @@ version = "0.1.0"
 edition = "2024"

 [dependencies]
-quick-error = { workspace = true }
 tokenizer = { path = "../tokenizer" }
 helpers = { path = "../helpers" }
 lsp-types = { workspace = true }
+thiserror = { workspace = true }


 [dev-dependencies]
--- a/rust_compiler/libs/parser/src/lib.rs
+++ b/rust_compiler/libs/parser/src/lib.rs
--- a/rust_compiler/libs/parser/src/sys_call.rs
+++ b/rust_compiler/libs/parser/src/sys_call.rs
@@ -4,73 +4,73 @@ use helpers::prelude::*;

 documented! {
    #[derive(Debug, PartialEq, Eq)]
-    pub enum Math {
+    pub enum Math<'a> {
        /// Returns the angle in radians whose cosine is the specified number.
        /// ## IC10
        /// `acos r? a(r?|num)`
        /// ## Slang
        /// `let item = acos(number|var|expression);`
-        Acos(Box<Spanned<Expression>>),
+        Acos(Box<Spanned<Expression<'a>>>),
        /// Returns the angle in radians whose sine is the specified number.
        /// ## IC10
        /// `asin r? a(r?|num)`
        /// ## Slang
        /// `let item = asin(number|var|expression);`
-        Asin(Box<Spanned<Expression>>),
+        Asin(Box<Spanned<Expression<'a>>>),
        /// Returns the angle in radians whose tangent is the specified number.
        /// ## IC10
        /// `atan r? a(r?|num)`
        /// ## Slang
        /// `let item = atan(number|var|expression);`
-        Atan(Box<Spanned<Expression>>),
+        Atan(Box<Spanned<Expression<'a>>>),
        /// Returns the angle in radians whose tangent is the quotient of the specified numbers.
        /// ## IC10
        /// `atan2 r? a(r?|num) b(r?|num)`
        /// ## Slang
        /// `let item = atan2((number|var|expression), (number|var|expression));`
-        Atan2(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
+        Atan2(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
        /// Gets the absolute value of a number.
        /// ## IC10
        /// `abs r? a(r?|num)`
        /// ## Slang
        /// `let item = abs((number|var|expression));`
-        Abs(Box<Spanned<Expression>>),
+        Abs(Box<Spanned<Expression<'a>>>),
        /// Rounds a number up to the nearest whole number.
        /// ## IC10
        /// `ceil r? a(r?|num)`
        /// ## Slang
        /// `let item = ceil((number|var|expression));`
-        Ceil(Box<Spanned<Expression>>),
+        Ceil(Box<Spanned<Expression<'a>>>),
        /// Returns the cosine of the specified angle in radians.
        /// ## IC10
        /// `cos r? a(r?|num)`
        /// ## Slang
        /// `let item = cos((number|var|expression));`
-        Cos(Box<Spanned<Expression>>),
+        Cos(Box<Spanned<Expression<'a>>>),
        /// Rounds a number down to the nearest whole number.
        /// ## IC10
        /// `floor r? a(r?|num)`
        /// ## Slang
        /// `let item = floor((number|var|expression));`
-        Floor(Box<Spanned<Expression>>),
+        Floor(Box<Spanned<Expression<'a>>>),
        /// Computes the natural logarithm of a number.
        /// ## IC10
        /// `log r? a(r?|num)`
        /// ## Slang
        /// `let item = log((number|var|expression));`
-        Log(Box<Spanned<Expression>>),
+        Log(Box<Spanned<Expression<'a>>>),
        /// Computes the maximum of two numbers.
        /// ## IC10
        /// `max r? a(r?|num) b(r?|num)`
        /// ## Slang
        /// `let item = max((number|var|expression), (number|var|expression));`
-        Max(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
+        Max(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
        /// Computes the minimum of two numbers.
        /// ## IC10
        /// `min r? a(r?|num) b(r?|num)`
        /// ## Slang
        /// `let item = min((number|var|expression), (number|var|expression));`
-        Min(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
+        Min(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
        /// Gets a random number between 0 and 1.
        /// ## IC10
        /// `rand r?`
@@ -82,29 +82,29 @@ documented! {
        /// `sin r? a(r?|num)`
        /// ## Slang
        /// `let item = sin((number|var|expression));`
-        Sin(Box<Spanned<Expression>>),
+        Sin(Box<Spanned<Expression<'a>>>),
        /// Computes the square root of a number.
        /// ## IC10
        /// `sqrt r? a(r?|num)`
        /// ## Slang
        /// `let item = sqrt((number|var|expression));`
-        Sqrt(Box<Spanned<Expression>>),
+        Sqrt(Box<Spanned<Expression<'a>>>),
        /// Returns the tangent of the specified angle in radians.
        /// ## IC10
        /// `tan r? a(r?|num)`
        /// ## Slang
        /// `let item = tan((number|var|expression));`
-        Tan(Box<Spanned<Expression>>),
+        Tan(Box<Spanned<Expression<'a>>>),
        /// Truncates a number by removing the decimal portion.
        /// ## IC10
        /// `trunc r? a(r?|num)`
        /// ## Slang
        /// `let item = trunc((number|var|expression));`
-        Trunc(Box<Spanned<Expression>>),
+        Trunc(Box<Spanned<Expression<'a>>>),
    }
 }

-impl std::fmt::Display for Math {
+impl<'a> std::fmt::Display for Math<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Math::Acos(a) => write!(f, "acos({})", a),
@@ -129,7 +129,7 @@ impl std::fmt::Display for Math {

 documented! {
    #[derive(Debug, PartialEq, Eq)]
-    pub enum System {
+    pub enum System<'a> {
        /// Pauses execution for exactly 1 tick and then resumes.
        /// ## IC10
        /// `yield`
@@ -141,7 +141,7 @@ documented! {
        /// `sleep a(r?|num)`
        /// ## Slang
        /// `sleep(number|var);`
-        Sleep(Box<Spanned<Expression>>),
+        Sleep(Box<Spanned<Expression<'a>>>),
        /// Gets the in-game hash for a specific prefab name. NOTE! This call is COMPLETELY
        /// optimized away unless you bind it to a `let` variable. If you use a `const` variable
        /// however, the hash is correctly computed at compile time and substitued automatically.
@@ -155,7 +155,7 @@ documented! {
        /// const compDoor = hash("StructureCompositeDoor");
        /// setOnDeviceBatched(compDoor, "Lock", true);
        /// ```
-        Hash(Spanned<Literal>),
+        Hash(Spanned<Literal<'a>>),
        /// Represents a function which loads a device variable into a register.
        /// ## IC10
        /// `l r? d? var`
@@ -163,7 +163,7 @@ documented! {
        /// `let item = load(deviceHash, "LogicType");`
        /// `let item = l(deviceHash, "LogicType");`
        /// `let item = deviceAlias.LogicType;`
-        LoadFromDevice(Spanned<LiteralOrVariable>, Spanned<Literal>),
+        LoadFromDevice(Spanned<LiteralOrVariable<'a>>, Spanned<Literal<'a>>),
        /// Function which gets a LogicType from all connected network devices that match
        /// the provided device hash and name, aggregating them via a batchMode
        /// ## IC10
@@ -172,10 +172,10 @@ documented! {
        /// `loadBatchedNamed(deviceHash, deviceName, "LogicType", "BatchMode");`
        /// `lbn(deviceHash, deviceName, "LogicType", "BatchMode");`
        LoadBatchNamed(
-            Spanned<LiteralOrVariable>,
-            Spanned<LiteralOrVariable>,
-            Spanned<Literal>,
-            Spanned<Literal>,
+            Spanned<LiteralOrVariable<'a>>,
+            Spanned<LiteralOrVariable<'a>>,
+            Spanned<Literal<'a>>,
+            Spanned<Literal<'a>>,
        ),
        /// Loads a LogicType from all connected network devices, aggregating them via a
        /// BatchMode
@@ -184,7 +184,7 @@ documented! {
        /// ## Slang
        /// `loadBatched(deviceHash, "Variable", "LogicType");`
        /// `lb(deviceHash, "Variable", "LogicType");`
-        LoadBatch(Spanned<LiteralOrVariable>, Spanned<Literal>, Spanned<Literal>),
+        LoadBatch(Spanned<LiteralOrVariable<'a>>, Spanned<Literal<'a>>, Spanned<Literal<'a>>),
        /// Represents a function which stores a setting into a specific device.
        /// ## IC10
        /// `s d? logicType r?`
@@ -192,7 +192,7 @@ documented! {
        /// `set(deviceHash, "LogicType", (number|var));`
        /// `s(deviceHash, "LogicType", (number|var));`
        /// `deviceAlias.LogicType = (number|var);`
-        SetOnDevice(Spanned<LiteralOrVariable>, Spanned<Literal>, Box<Spanned<Expression>>),
+        SetOnDevice(Spanned<LiteralOrVariable<'a>>, Spanned<Literal<'a>>, Box<Spanned<Expression<'a>>>),
        /// Represents a function which stores a setting to all devices that match
        /// the given deviceHash
        /// ## IC10
@@ -200,7 +200,7 @@ documented! {
        /// ## Slang
        /// `setBatched(deviceHash, "LogicType", (number|var));`
        /// `sb(deviceHash, "LogicType", (number|var));`
-        SetOnDeviceBatched(Spanned<LiteralOrVariable>, Spanned<Literal>, Box<Spanned<Expression>>),
+        SetOnDeviceBatched(Spanned<LiteralOrVariable<'a>>, Spanned<Literal<'a>>, Box<Spanned<Expression<'a>>>),
        /// Represents a function which stores a setting to all devices that match
        /// both the given deviceHash AND the given nameHash
        /// ## IC10
@@ -209,15 +209,39 @@ documented! {
        /// `setBatchedNamed(deviceHash, nameHash, "LogicType", (number|var));`
        /// `sbn(deviceHash, nameHash, "LogicType", (number|var));`
        SetOnDeviceBatchedNamed(
-            Spanned<LiteralOrVariable>,
-            Spanned<LiteralOrVariable>,
-            Spanned<Literal>,
-            Box<Spanned<Expression>>,
+            Spanned<LiteralOrVariable<'a>>,
+            Spanned<LiteralOrVariable<'a>>,
+            Spanned<Literal<'a>>,
+            Box<Spanned<Expression<'a>>>,
        ),
+        /// Loads slot LogicSlotType from device into a variable
+        ///
+        /// ## IC10
+        /// `ls r0 d0 2 Occupied`
+        /// ## Slang
+        /// `let isOccupied = loadSlot(deviceHash, 2, "Occupied");`
+        /// `let isOccupied = ls(deviceHash, 2, "Occupied");`
+        LoadSlot(
+            Spanned<LiteralOrVariable<'a>>,
+            Spanned<Literal<'a>>,
+            Spanned<Literal<'a>>
+        ),
+        /// Stores a value of LogicType on a device by the index value
+        /// ## IC10
+        /// `ss d0 0 "Open" 1`
+        /// ## Slang
+        /// `setSlot(deviceHash, 0, "Open", true);`
+        /// `ss(deviceHash, 0, "Open", true);`
+        SetSlot(
+            Spanned<LiteralOrVariable<'a>>,
+            Spanned<Literal<'a>>,
+            Spanned<Literal<'a>>,
+            Box<Spanned<Expression<'a>>>
+        )
    }
 }

-impl std::fmt::Display for System {
+impl<'a> std::fmt::Display for System<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            System::Yield => write!(f, "yield()"),
@@ -235,6 +259,8 @@ impl std::fmt::Display for System {
            System::SetOnDeviceBatchedNamed(a, b, c, d) => {
                write!(f, "setOnDeviceBatchedNamed({}, {}, {}, {})", a, b, c, d)
            }
+            System::LoadSlot(a, b, c) => write!(f, "loadSlot({}, {}, {})", a, b, c),
+            System::SetSlot(a, b, c, d) => write!(f, "setSlot({}, {}, {}, {})", a, b, c, d),
        }
    }
 }
@@ -242,13 +268,13 @@ impl std::fmt::Display for System {
 #[allow(clippy::large_enum_variant)]
 #[derive(Debug, PartialEq, Eq)]
 /// This represents built in functions that cannot be overwritten, but can be invoked by the user as functions.
-pub enum SysCall {
-    System(System),
+pub enum SysCall<'a> {
+    System(System<'a>),
    /// Represents any mathmatical function that can be called.
-    Math(Math),
+    Math(Math<'a>),
 }

-impl Documentation for SysCall {
+impl<'a> Documentation for SysCall<'a> {
    fn docs(&self) -> String {
        match self {
            Self::System(s) => s.docs(),
@@ -264,7 +290,7 @@ impl Documentation for SysCall {
    }
 }

-impl std::fmt::Display for SysCall {
+impl<'a> std::fmt::Display for SysCall<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            SysCall::System(s) => write!(f, "{}", s),
@@ -273,7 +299,7 @@ impl std::fmt::Display for SysCall {
    }
 }

-impl SysCall {
+impl<'a> SysCall<'a> {
    pub fn is_syscall(identifier: &str) -> bool {
        tokenizer::token::is_syscall(identifier)
    }
--- a/rust_compiler/libs/parser/src/test/mod.rs
+++ b/rust_compiler/libs/parser/src/test/mod.rs
@@ -160,3 +160,37 @@ fn test_negative_literal_const() -> Result<()> {

    Ok(())
 }
+
+#[test]
+fn test_ternary_expression() -> Result<()> {
+    let expr = parser!(r#"let i = x ? 1 : 2;"#).parse()?.unwrap();
+
+    assert_eq!("(let i = (x ? 1 : 2))", expr.to_string());
+    Ok(())
+}
+
+#[test]
+fn test_complex_binary_with_ternary() -> Result<()> {
+    let expr = parser!("let i = (x ? 1 : 3) * 2;").parse()?.unwrap();
+
+    assert_eq!("(let i = ((x ? 1 : 3) * 2))", expr.to_string());
+
+    Ok(())
+}
+
+#[test]
+fn test_operator_prescedence_with_ternary() -> Result<()> {
+    let expr = parser!("let x = x ? 1 : 3 * 2;").parse()?.unwrap();
+
+    assert_eq!("(let x = (x ? 1 : (3 * 2)))", expr.to_string());
+
+    Ok(())
+}
+
+#[test]
+fn test_nested_ternary_right_associativity() -> Result<()> {
+    let expr = parser!("let i = a ? b : c ? d : e;").parse()?.unwrap();
+
+    assert_eq!("(let i = (a ? b : (c ? d : e)))", expr.to_string());
+    Ok(())
+}
--- a/rust_compiler/libs/parser/src/tree_node.rs
+++ b/rust_compiler/libs/parser/src/tree_node.rs
@@ -1,24 +1,22 @@
-use std::ops::Deref;
-
-use crate::sys_call;
-
 use super::sys_call::SysCall;
+use crate::sys_call;
+use std::{borrow::Cow, ops::Deref};
 use tokenizer::token::Number;

 #[derive(Debug, Eq, PartialEq, Clone)]
-pub enum Literal {
+pub enum Literal<'a> {
    Number(Number),
-    String(String),
+    String(Cow<'a, str>),
    Boolean(bool),
 }

 #[derive(Debug, Eq, PartialEq, Clone)]
-pub enum LiteralOr<T> {
-    Literal(Spanned<Literal>),
+pub enum LiteralOr<'a, T> {
+    Literal(Spanned<Literal<'a>>),
    Or(Spanned<T>),
 }

-impl<T: std::fmt::Display> std::fmt::Display for LiteralOr<T> {
+impl<'a, T: std::fmt::Display> std::fmt::Display for LiteralOr<'a, T> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Self::Literal(l) => write!(f, "{l}"),
@@ -27,7 +25,7 @@ impl<T: std::fmt::Display> std::fmt::Display for LiteralOr<T> {
    }
 }

-impl std::fmt::Display for Literal {
+impl<'a> std::fmt::Display for Literal<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Literal::Number(n) => write!(f, "{}", n),
@@ -38,16 +36,16 @@ impl std::fmt::Display for Literal {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub enum BinaryExpression {
-    Add(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    Multiply(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    Divide(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    Subtract(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    Exponent(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    Modulo(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
+pub enum BinaryExpression<'a> {
+    Add(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    Multiply(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    Divide(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    Subtract(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    Exponent(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    Modulo(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
 }

-impl std::fmt::Display for BinaryExpression {
+impl<'a> std::fmt::Display for BinaryExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            BinaryExpression::Add(l, r) => write!(f, "({} + {})", l, r),
@@ -61,19 +59,19 @@ impl std::fmt::Display for BinaryExpression {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub enum LogicalExpression {
-    And(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    Or(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    Not(Box<Spanned<Expression>>),
-    Equal(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    NotEqual(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    GreaterThan(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    GreaterThanOrEqual(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    LessThan(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
-    LessThanOrEqual(Box<Spanned<Expression>>, Box<Spanned<Expression>>),
+pub enum LogicalExpression<'a> {
+    And(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    Or(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    Not(Box<Spanned<Expression<'a>>>),
+    Equal(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    NotEqual(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    GreaterThan(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    GreaterThanOrEqual(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    LessThan(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
+    LessThanOrEqual(Box<Spanned<Expression<'a>>>, Box<Spanned<Expression<'a>>>),
 }

-impl std::fmt::Display for LogicalExpression {
+impl<'a> std::fmt::Display for LogicalExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            LogicalExpression::And(l, r) => write!(f, "({} && {})", l, r),
@@ -90,25 +88,25 @@ impl std::fmt::Display for LogicalExpression {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct AssignmentExpression {
-    pub assignee: Box<Spanned<Expression>>,
-    pub expression: Box<Spanned<Expression>>,
+pub struct AssignmentExpression<'a> {
+    pub assignee: Box<Spanned<Expression<'a>>>,
+    pub expression: Box<Spanned<Expression<'a>>>,
 }

-impl std::fmt::Display for AssignmentExpression {
+impl<'a> std::fmt::Display for AssignmentExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "({} = {})", self.assignee, self.expression)
    }
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct FunctionExpression {
-    pub name: Spanned<String>,
-    pub arguments: Vec<Spanned<String>>,
-    pub body: BlockExpression,
+pub struct FunctionExpression<'a> {
+    pub name: Spanned<Cow<'a, str>>,
+    pub arguments: Vec<Spanned<Cow<'a, str>>>,
+    pub body: BlockExpression<'a>,
 }

-impl std::fmt::Display for FunctionExpression {
+impl<'a> std::fmt::Display for FunctionExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
@@ -125,9 +123,9 @@ impl std::fmt::Display for FunctionExpression {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct BlockExpression(pub Vec<Spanned<Expression>>);
+pub struct BlockExpression<'a>(pub Vec<Spanned<Expression<'a>>>);

-impl std::fmt::Display for BlockExpression {
+impl<'a> std::fmt::Display for BlockExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
@@ -142,12 +140,12 @@ impl std::fmt::Display for BlockExpression {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct InvocationExpression {
-    pub name: Spanned<String>,
-    pub arguments: Vec<Spanned<Expression>>,
+pub struct InvocationExpression<'a> {
+    pub name: Spanned<Cow<'a, str>>,
+    pub arguments: Vec<Spanned<Expression<'a>>>,
 }

-impl std::fmt::Display for InvocationExpression {
+impl<'a> std::fmt::Display for InvocationExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
@@ -163,25 +161,25 @@ impl std::fmt::Display for InvocationExpression {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct MemberAccessExpression {
-    pub object: Box<Spanned<Expression>>,
-    pub member: Spanned<String>,
+pub struct MemberAccessExpression<'a> {
+    pub object: Box<Spanned<Expression<'a>>>,
+    pub member: Spanned<Cow<'a, str>>,
 }

-impl std::fmt::Display for MemberAccessExpression {
+impl<'a> std::fmt::Display for MemberAccessExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}.{}", self.object, self.member)
    }
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct MethodCallExpression {
-    pub object: Box<Spanned<Expression>>,
-    pub method: Spanned<String>,
-    pub arguments: Vec<Spanned<Expression>>,
+pub struct MethodCallExpression<'a> {
+    pub object: Box<Spanned<Expression<'a>>>,
+    pub method: Spanned<Cow<'a, str>>,
+    pub arguments: Vec<Spanned<Expression<'a>>>,
 }

-impl std::fmt::Display for MethodCallExpression {
+impl<'a> std::fmt::Display for MethodCallExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
@@ -198,12 +196,12 @@ impl std::fmt::Display for MethodCallExpression {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub enum LiteralOrVariable {
-    Literal(Literal),
-    Variable(Spanned<String>),
+pub enum LiteralOrVariable<'a> {
+    Literal(Literal<'a>),
+    Variable(Spanned<Cow<'a, str>>),
 }

-impl std::fmt::Display for LiteralOrVariable {
+impl<'a> std::fmt::Display for LiteralOrVariable<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            LiteralOrVariable::Literal(l) => write!(f, "{}", l),
@@ -213,46 +211,46 @@ impl std::fmt::Display for LiteralOrVariable {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct ConstDeclarationExpression {
-    pub name: Spanned<String>,
-    pub value: LiteralOr<SysCall>,
+pub struct ConstDeclarationExpression<'a> {
+    pub name: Spanned<Cow<'a, str>>,
+    pub value: LiteralOr<'a, SysCall<'a>>,
 }

-impl ConstDeclarationExpression {
+impl<'a> ConstDeclarationExpression<'a> {
    pub fn is_syscall_supported(call: &SysCall) -> bool {
        use sys_call::System;
        matches!(call, SysCall::System(sys) if matches!(sys, System::Hash(_)))
    }
 }

-impl std::fmt::Display for ConstDeclarationExpression {
+impl<'a> std::fmt::Display for ConstDeclarationExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "(const {} = {})", self.name, self.value)
    }
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct DeviceDeclarationExpression {
+pub struct DeviceDeclarationExpression<'a> {
    /// any variable-like name
-    pub name: Spanned<String>,
+    pub name: Spanned<Cow<'a, str>>,
    /// The device port, ex. (db, d0, d1, d2, d3, d4, d5)
-    pub device: String,
+    pub device: Cow<'a, str>,
 }

-impl std::fmt::Display for DeviceDeclarationExpression {
+impl<'a> std::fmt::Display for DeviceDeclarationExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "(device {} = {})", self.name, self.device)
    }
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct IfExpression {
-    pub condition: Box<Spanned<Expression>>,
-    pub body: Spanned<BlockExpression>,
-    pub else_branch: Option<Box<Spanned<Expression>>>,
+pub struct IfExpression<'a> {
+    pub condition: Box<Spanned<Expression<'a>>>,
+    pub body: Spanned<BlockExpression<'a>>,
+    pub else_branch: Option<Box<Spanned<Expression<'a>>>>,
 }

-impl std::fmt::Display for IfExpression {
+impl<'a> std::fmt::Display for IfExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "(if ({}) {}", self.condition, self.body)?;
        if let Some(else_branch) = &self.else_branch {
@@ -263,23 +261,40 @@ impl std::fmt::Display for IfExpression {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct LoopExpression {
-    pub body: Spanned<BlockExpression>,
+pub struct LoopExpression<'a> {
+    pub body: Spanned<BlockExpression<'a>>,
 }

-impl std::fmt::Display for LoopExpression {
+impl<'a> std::fmt::Display for LoopExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "(loop {})", self.body)
    }
 }

 #[derive(Debug, PartialEq, Eq)]
-pub struct WhileExpression {
-    pub condition: Box<Spanned<Expression>>,
-    pub body: BlockExpression,
+pub struct WhileExpression<'a> {
+    pub condition: Box<Spanned<Expression<'a>>>,
+    pub body: BlockExpression<'a>,
 }

-impl std::fmt::Display for WhileExpression {
+#[derive(Debug, PartialEq, Eq)]
+pub struct TernaryExpression<'a> {
+    pub condition: Box<Spanned<Expression<'a>>>,
+    pub true_value: Box<Spanned<Expression<'a>>>,
+    pub false_value: Box<Spanned<Expression<'a>>>,
+}
+
+impl<'a> std::fmt::Display for TernaryExpression<'a> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "({} ? {} : {})",
+            self.condition, self.true_value, self.false_value
+        )
+    }
+}
+
+impl<'a> std::fmt::Display for WhileExpression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "(while {} {})", self.condition, self.body)
    }
@@ -347,32 +362,33 @@ impl<T> Deref for Spanned<T> {
 }

 #[derive(Debug, PartialEq, Eq)]
-pub enum Expression {
-    Assignment(Spanned<AssignmentExpression>),
-    Binary(Spanned<BinaryExpression>),
-    Block(Spanned<BlockExpression>),
+pub enum Expression<'a> {
+    Assignment(Spanned<AssignmentExpression<'a>>),
+    Binary(Spanned<BinaryExpression<'a>>),
+    Block(Spanned<BlockExpression<'a>>),
    Break(Span),
-    ConstDeclaration(Spanned<ConstDeclarationExpression>),
+    ConstDeclaration(Spanned<ConstDeclarationExpression<'a>>),
    Continue(Span),
-    Declaration(Spanned<String>, Box<Spanned<Expression>>),
-    DeviceDeclaration(Spanned<DeviceDeclarationExpression>),
-    Function(Spanned<FunctionExpression>),
-    If(Spanned<IfExpression>),
-    Invocation(Spanned<InvocationExpression>),
-    Literal(Spanned<Literal>),
-    Logical(Spanned<LogicalExpression>),
-    Loop(Spanned<LoopExpression>),
-    MemberAccess(Spanned<MemberAccessExpression>),
-    MethodCall(Spanned<MethodCallExpression>),
-    Negation(Box<Spanned<Expression>>),
-    Priority(Box<Spanned<Expression>>),
-    Return(Box<Spanned<Expression>>),
-    Syscall(Spanned<SysCall>),
-    Variable(Spanned<String>),
-    While(Spanned<WhileExpression>),
+    Declaration(Spanned<Cow<'a, str>>, Box<Spanned<Expression<'a>>>),
+    DeviceDeclaration(Spanned<DeviceDeclarationExpression<'a>>),
+    Function(Spanned<FunctionExpression<'a>>),
+    If(Spanned<IfExpression<'a>>),
+    Invocation(Spanned<InvocationExpression<'a>>),
+    Literal(Spanned<Literal<'a>>),
+    Logical(Spanned<LogicalExpression<'a>>),
+    Loop(Spanned<LoopExpression<'a>>),
+    MemberAccess(Spanned<MemberAccessExpression<'a>>),
+    MethodCall(Spanned<MethodCallExpression<'a>>),
+    Negation(Box<Spanned<Expression<'a>>>),
+    Priority(Box<Spanned<Expression<'a>>>),
+    Return(Option<Box<Spanned<Expression<'a>>>>),
+    Syscall(Spanned<SysCall<'a>>),
+    Ternary(Spanned<TernaryExpression<'a>>),
+    Variable(Spanned<Cow<'a, str>>),
+    While(Spanned<WhileExpression<'a>>),
 }

-impl std::fmt::Display for Expression {
+impl<'a> std::fmt::Display for Expression<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Expression::Assignment(e) => write!(f, "{}", e),
@@ -393,8 +409,17 @@ impl std::fmt::Display for Expression {
            Expression::MethodCall(e) => write!(f, "{}", e),
            Expression::Negation(e) => write!(f, "(-{})", e),
            Expression::Priority(e) => write!(f, "({})", e),
-            Expression::Return(e) => write!(f, "(return {})", e),
+            Expression::Return(e) => write!(
+                f,
+                "(return {})",
+                if let Some(e) = e {
+                    e.to_string()
+                } else {
+                    "".to_string()
+                }
+            ),
            Expression::Syscall(e) => write!(f, "{}", e),
+            Expression::Ternary(e) => write!(f, "{}", e),
            Expression::Variable(id) => write!(f, "{}", id),
            Expression::While(e) => write!(f, "{}", e),
        }
--- a/rust_compiler/libs/tokenizer/Cargo.toml
+++ b/rust_compiler/libs/tokenizer/Cargo.toml
@@ -5,9 +5,10 @@ edition = "2024"

 [dependencies]
 rust_decimal = { workspace = true }
-quick-error = { workspace = true }
 lsp-types = { workspace = true }
+thiserror = { workspace = true }
 helpers = { path = "../helpers" }
+logos = "0.16"

 [dev-dependencies]
 anyhow = { version = "^1" }
--- a/rust_compiler/libs/tokenizer/src/lib.rs
+++ b/rust_compiler/libs/tokenizer/src/lib.rs
--- a/rust_compiler/libs/tokenizer/src/token.rs
+++ b/rust_compiler/libs/tokenizer/src/token.rs
@@ -1,5 +1,59 @@
+use std::borrow::Cow;
+
 use helpers::prelude::*;
+use logos::{Lexer, Logos, Skip, Span};
+use lsp_types::{Diagnostic, DiagnosticSeverity, Position, Range};
 use rust_decimal::Decimal;
+use thiserror::Error;
+
+#[derive(Debug, Error, Default, Clone, PartialEq)]
+pub enum LexError {
+    #[error("Attempted to parse an invalid number: {2}")]
+    NumberParse(usize, Span, String),
+
+    #[error("An invalid character was found in token stream: {2}")]
+    InvalidInput(usize, Span, String),
+
+    #[default]
+    #[error("An unknown error occurred")]
+    Other,
+}
+
+impl From<LexError> for Diagnostic {
+    fn from(value: LexError) -> Self {
+        match value {
+            LexError::NumberParse(line, col, str) | LexError::InvalidInput(line, col, str) => {
+                Diagnostic {
+                    range: Range {
+                        start: Position {
+                            character: col.start as u32,
+                            line: line as u32,
+                        },
+                        end: Position {
+                            line: line as u32,
+                            character: col.end as u32,
+                        },
+                    },
+                    severity: Some(DiagnosticSeverity::ERROR),
+                    message: str,
+                    ..Default::default()
+                }
+            }
+            _ => Diagnostic::default(),
+        }
+    }
+}
+
+impl LexError {
+    pub fn from_lexer<'a>(lex: &mut Lexer<'a, TokenType<'a>>) -> Self {
+        let mut span = lex.span();
+        let line = lex.extras.line_count;
+        span.start -= lex.extras.line_start_index;
+        span.end -= lex.extras.line_start_index;
+
+        Self::InvalidInput(line, span, lex.slice().chars().as_str().to_string())
+    }
+}

 // Define a local macro to consume the list
 macro_rules! generate_check {
@@ -10,29 +64,40 @@ macro_rules! generate_check {
    }
 }

-#[derive(Debug, PartialEq, Eq, Clone)]
-pub struct Token {
-    /// The type of the token
-    pub token_type: TokenType,
-    /// The line where the token was found
-    pub line: usize,
-    /// The column where the token was found
-    pub column: usize,
-    pub original_string: Option<String>,
+#[derive(Default)]
+pub struct Extras {
+    pub line_count: usize,
+    pub line_start_index: usize,
 }

-impl Token {
-    pub fn new(
-        token_type: TokenType,
-        line: usize,
-        column: usize,
-        original: Option<String>,
-    ) -> Self {
+fn update_line_index<'a>(lex: &mut Lexer<'a, TokenType<'a>>) -> Skip {
+    lex.extras.line_count += 1;
+    lex.extras.line_start_index = lex.span().end;
+    Skip
+}
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+pub struct Token<'a> {
+    /// The type of the token
+    pub token_type: TokenType<'a>,
+    /// The line where the token was found
+    pub line: usize,
+    /// The span where the token starts and ends
+    pub span: Span,
+}
+
+impl<'a> std::fmt::Display for Token<'a> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.token_type)
+    }
+}
+
+impl<'a> Token<'a> {
+    pub fn new(token_type: TokenType<'a>, line: usize, span: Span) -> Self {
        Self {
            token_type,
            line,
-            column,
-            original_string: original,
+            span,
        }
    }
 }
@@ -79,25 +144,187 @@ impl Temperature {
    }
 }

-#[derive(Debug, PartialEq, Hash, Eq, Clone)]
-pub enum TokenType {
+macro_rules! symbol {
+    ($var:ident) => {
+        |_| Symbol::$var
+    };
+}
+
+macro_rules! keyword {
+    ($var:ident) => {
+        |_| Keyword::$var
+    };
+}
+
+#[derive(Debug, PartialEq, Hash, Eq, Clone, Logos)]
+#[logos(skip r"[ \t\f]+")]
+#[logos(extras = Extras)]
+#[logos(error(LexError, LexError::from_lexer))]
+pub enum TokenType<'a> {
+    #[regex(r"\n", update_line_index)]
+    Newline,
+
+    // matches strings with double quotes
+    #[regex(r#""(?:[^"\\]|\\.)*""#, |v| {
+        let str = v.slice();
+        Cow::from(&str[1..str.len() - 1])
+    })]
+    // matches strings with single quotes
+    #[regex(r#"'(?:[^'\\]|\\.)*'"#, |v| {
+        let str = v.slice();
+        Cow::from(&str[1..str.len() - 1])
+    })]
    /// Represents a string token
-    String(String),
+    String(Cow<'a, str>),
+
+    #[regex(r"[0-9][0-9_]*(\.[0-9][0-9_]*)?([cfk])?", parse_number)]
    /// Represents a number token
    Number(Number),
+
+    #[token("true", |_| true)]
+    #[token("false", |_| false)]
    /// Represents a boolean token
    Boolean(bool),
+
+    #[token("continue", keyword!(Continue))]
+    #[token("const", keyword!(Const))]
+    #[token("let", keyword!(Let))]
+    #[token("fn", keyword!(Fn))]
+    #[token("if", keyword!(If))]
+    #[token("device", keyword!(Device))]
+    #[token("else", keyword!(Else))]
+    #[token("return", keyword!(Return))]
+    #[token("enum", keyword!(Enum))]
+    #[token("loop", keyword!(Loop))]
+    #[token("break", keyword!(Break))]
+    #[token("while", keyword!(While))]
    /// Represents a keyword token
    Keyword(Keyword),
+
+    #[regex(r"[a-zA-Z_][a-zA-Z0-9_]*", |v| Cow::from(v.slice()))]
    /// Represents an identifier token
-    Identifier(String),
+    Identifier(Cow<'a, str>),
+
+    #[token("(", symbol!(LParen))]
+    #[token(")", symbol!(RParen))]
+    #[token("{", symbol!(LBrace))]
+    #[token("}", symbol!(RBrace))]
+    #[token("[", symbol!(LBracket))]
+    #[token("]", symbol!(RBracket))]
+    #[token(";", symbol!(Semicolon))]
+    #[token(":", symbol!(Colon))]
+    #[token(",", symbol!(Comma))]
+    #[token("+", symbol!(Plus))]
+    #[token("-", symbol!(Minus))]
+    #[token("*", symbol!(Asterisk))]
+    #[token("/", symbol!(Slash))]
+    #[token("<", symbol!(LessThan))]
+    #[token(">", symbol!(GreaterThan))]
+    #[token("=", symbol!(Assign))]
+    #[token("!", symbol!(LogicalNot))]
+    #[token(".", symbol!(Dot))]
+    #[token("^", symbol!(Caret))]
+    #[token("%", symbol!(Percent))]
+    #[token("?", symbol!(Question))]
+    #[token("==", symbol!(Equal))]
+    #[token("!=", symbol!(NotEqual))]
+    #[token("&&", symbol!(LogicalAnd))]
+    #[token("||", symbol!(LogicalOr))]
+    #[token("<=", symbol!(LessThanOrEqual))]
+    #[token(">=", symbol!(GreaterThanOrEqual))]
+    #[token("**", symbol!(Exp))]
    /// Represents a symbol token
    Symbol(Symbol),
+
+    #[token("//", |lex| Comment::Line(read_line(lex)))]
+    #[token("///", |lex| Comment::Doc(read_line(lex)))]
+    /// Represents a comment, both a line comment and a doc comment
+    Comment(Comment<'a>),
+
+    #[end]
    /// Represents an end of file token
    EOF,
 }

-impl Documentation for TokenType {
+fn read_line<'a>(lexer: &mut Lexer<'a, TokenType<'a>>) -> Cow<'a, str> {
+    let rem = lexer.remainder();
+    let len = rem.find('\n').unwrap_or(rem.len());
+    let content = rem[..len].trim().to_string();
+
+    lexer.bump(len);
+    Cow::from(content)
+}
+
+#[derive(Hash, Debug, Eq, PartialEq, Clone)]
+pub enum Comment<'a> {
+    Line(Cow<'a, str>),
+    Doc(Cow<'a, str>),
+}
+
+fn parse_number<'a>(lexer: &mut Lexer<'a, TokenType<'a>>) -> Result<Number, LexError> {
+    let slice = lexer.slice();
+    let last_char = slice.chars().last().unwrap_or_default();
+    let (num_str, suffix) = match last_char {
+        'c' | 'k' | 'f' => (&slice[..slice.len() - 1], Some(last_char)),
+        _ => (slice, None),
+    };
+
+    let clean_str = if num_str.contains('_') {
+        num_str.replace('_', "")
+    } else {
+        num_str.to_string()
+    };
+
+    let line = lexer.extras.line_count;
+    let mut span = lexer.span();
+    span.end -= lexer.extras.line_start_index;
+    span.start -= lexer.extras.line_start_index;
+
+    let num = if clean_str.contains('.') {
+        Number::Decimal(
+            clean_str
+                .parse::<Decimal>()
+                .map_err(|_| LexError::NumberParse(line, span, slice.to_string()))?,
+        )
+    } else {
+        Number::Integer(
+            clean_str
+                .parse::<i128>()
+                .map_err(|_| LexError::NumberParse(line, span, slice.to_string()))?,
+        )
+    };
+
+    if let Some(suffix) = suffix {
+        Ok(match suffix {
+            'c' => Temperature::Celsius(num),
+            'f' => Temperature::Fahrenheit(num),
+            'k' => Temperature::Kelvin(num),
+            _ => unreachable!(),
+        }
+        .to_kelvin())
+    } else {
+        Ok(num)
+    }
+}
+
+impl<'a> std::fmt::Display for Comment<'a> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Line(c) => write!(f, "// {}", c),
+            Self::Doc(d) => {
+                let lines = d
+                    .split('\n')
+                    .map(|s| format!("/// {s}"))
+                    .collect::<Vec<_>>()
+                    .join("\n");
+
+                write!(f, "{}", lines)
+            }
+        }
+    }
+}
+
+impl<'a> Documentation for TokenType<'a> {
    fn docs(&self) -> String {
        match self {
            Self::Keyword(k) => k.docs(),
@@ -112,7 +339,7 @@ impl Documentation for TokenType {

 helpers::with_syscalls!(generate_check);

-impl From<TokenType> for u32 {
+impl<'a> From<TokenType<'a>> for u32 {
    fn from(value: TokenType) -> Self {
        match value {
            TokenType::String(_) => 1,
@@ -128,6 +355,7 @@ impl From<TokenType> for u32 {
                | Keyword::Return => 4,
                _ => 5,
            },
+            TokenType::Comment(_) => 8,
            TokenType::Identifier(s) => {
                if is_syscall(&s) {
                    10
@@ -146,12 +374,12 @@ impl From<TokenType> for u32 {
                    7
                }
            }
-            TokenType::EOF => 0,
+            _ => 0,
        }
    }
 }

-impl std::fmt::Display for TokenType {
+impl<'a> std::fmt::Display for TokenType<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            TokenType::String(s) => write!(f, "{}", s),
@@ -160,7 +388,9 @@ impl std::fmt::Display for TokenType {
            TokenType::Keyword(k) => write!(f, "{:?}", k),
            TokenType::Identifier(i) => write!(f, "{}", i),
            TokenType::Symbol(s) => write!(f, "{}", s),
+            TokenType::Comment(c) => write!(f, "{}", c),
            TokenType::EOF => write!(f, "EOF"),
+            _ => write!(f, ""),
        }
    }
 }
@@ -306,6 +536,8 @@ pub enum Symbol {
    Caret,
    /// Represents the `%` symbol
    Percent,
+    /// Represents the `?` symbol
+    Question,

    // Double Character Symbols
    /// Represents the `==` symbol
@@ -372,6 +604,7 @@ impl std::fmt::Display for Symbol {
            Self::Asterisk => write!(f, "*"),
            Self::Slash => write!(f, "/"),
            Self::LessThan => write!(f, "<"),
+            Self::Question => write!(f, "?"),
            Self::LessThanOrEqual => write!(f, "<="),
            Self::GreaterThan => write!(f, ">"),
            Self::GreaterThanOrEqual => write!(f, ">="),
--- a/rust_compiler/src/ffi/mod.rs
+++ b/rust_compiler/src/ffi/mod.rs
@@ -96,9 +96,10 @@ pub fn free_docs_vec(v: safer_ffi::Vec<FfiDocumentedItem>) {
 #[ffi_export]
 pub fn compile_from_string(input: safer_ffi::slice::Ref<'_, u16>) -> safer_ffi::String {
    let res = std::panic::catch_unwind(|| {
+        let input = String::from_utf16_lossy(input.as_slice());
        let mut writer = BufWriter::new(Vec::new());

-        let tokenizer = Tokenizer::from(String::from_utf16_lossy(input.as_slice()));
+        let tokenizer = Tokenizer::from(input.as_str());
        let parser = Parser::new(tokenizer);
        let compiler = Compiler::new(parser, &mut writer, None);

@@ -120,7 +121,8 @@ pub fn compile_from_string(input: safer_ffi::slice::Ref<'_, u16>) -> safer_ffi::
 #[ffi_export]
 pub fn tokenize_line(input: safer_ffi::slice::Ref<'_, u16>) -> safer_ffi::Vec<FfiToken> {
    let res = std::panic::catch_unwind(|| {
-        let tokenizer = Tokenizer::from(String::from_utf16_lossy(input.as_slice()));
+        let input = String::from_utf16_lossy(input.as_slice());
+        let tokenizer = Tokenizer::from(input.as_str());

        let mut tokens = Vec::new();

@@ -136,34 +138,31 @@ pub fn tokenize_line(input: safer_ffi::slice::Ref<'_, u16>) -> safer_ffi::Vec<Ff
            }
            match token {
                Err(ref e) => {
+                    use tokenizer::token::LexError;
                    use tokenizer::Error::*;
-                    let (err_str, col, og) = match e {
-                        NumberParseError(_, _, col, og)
-                        | DecimalParseError(_, _, col, og)
-                        | UnknownSymbolError(_, _, col, og)
-                        | UnknownKeywordOrIdentifierError(_, _, col, og) => {
-                            (e.to_string(), col, og)
+                    let (err_str, _, span) = match e {
+                        LexError(LexError::NumberParse(line, span, err))
+                        | LexError(LexError::InvalidInput(line, span, err)) => {
+                            (err.to_string(), line, span)
                        }
+
                        _ => continue,
                    };

                    tokens.push(FfiToken {
-                        column: *col as i32,
+                        column: span.start as i32,
                        error: err_str.into(),
                        tooltip: "".into(),
-                        length: og.len() as i32,
+                        length: (span.end - span.start) as i32,
                        token_kind: 0,
                    })
                }
                Ok(Token {
-                    column,
-                    original_string,
-                    token_type,
-                    ..
+                    span, token_type, ..
                }) => tokens.push(FfiToken {
-                    column: column as i32,
+                    column: span.start as i32,
                    error: "".into(),
-                    length: (original_string.unwrap_or_default().len()) as i32,
+                    length: (span.end - span.start) as i32,
                    tooltip: token_type.docs().into(),
                    token_kind: token_type.into(),
                }),
@@ -179,8 +178,10 @@ pub fn tokenize_line(input: safer_ffi::slice::Ref<'_, u16>) -> safer_ffi::Vec<Ff
 #[ffi_export]
 pub fn diagnose_source(input: safer_ffi::slice::Ref<'_, u16>) -> safer_ffi::Vec<FfiDiagnostic> {
    let res = std::panic::catch_unwind(|| {
+        let input = String::from_utf16_lossy(input.as_slice());
+
        let mut writer = BufWriter::new(Vec::new());
-        let tokenizer = Tokenizer::from(String::from_utf16_lossy(input.as_slice()));
+        let tokenizer = Tokenizer::from(input.as_str());
        let compiler = Compiler::new(Parser::new(tokenizer), &mut writer, None);

        let diagnosis = compiler.compile();
--- a/rust_compiler/src/main.rs
+++ b/rust_compiler/src/main.rs
@@ -1,8 +1,5 @@
 #![allow(clippy::result_large_err)]

-#[macro_use]
-extern crate quick_error;
-
 use clap::Parser;
 use compiler::Compiler;
 use parser::Parser as ASTParser;
@@ -11,27 +8,39 @@ use std::{
    io::{stderr, BufWriter, Read, Write},
    path::PathBuf,
 };
+use thiserror::Error;
 use tokenizer::{self, Tokenizer};

-quick_error! {
-    #[derive(Debug)]
-    enum StationlangError {
-        TokenizerError(err: tokenizer::Error) {
-            from()
-            display("Tokenizer error: {}", err)
-        }
-        ParserError(err: parser::Error) {
-            from()
-            display("Parser error: {}", err)
-        }
-        CompileError(err: compiler::Error) {
-            from()
-            display("Compile error: {}", err)
-        }
-        IoError(err: std::io::Error) {
-            from()
-            display("IO error: {}", err)
-        }
+#[derive(Error, Debug)]
+enum Error<'a> {
+    #[error(transparent)]
+    Tokenizer(tokenizer::Error),
+
+    #[error(transparent)]
+    Parser(parser::Error<'a>),
+
+    #[error(transparent)]
+    Compile(compiler::Error<'a>),
+
+    #[error(transparent)]
+    IO(#[from] std::io::Error),
+}
+
+impl<'a> From<parser::Error<'a>> for Error<'a> {
+    fn from(value: parser::Error<'a>) -> Self {
+        Self::Parser(value)
+    }
+}
+
+impl<'a> From<compiler::Error<'a>> for Error<'a> {
+    fn from(value: compiler::Error<'a>) -> Self {
+        Self::Compile(value)
+    }
+}
+
+impl<'a> From<tokenizer::Error> for Error<'a> {
+    fn from(value: tokenizer::Error) -> Self {
+        Self::Tokenizer(value)
    }
 }

@@ -46,12 +55,17 @@ struct Args {
    output_file: Option<PathBuf>,
 }

-fn run_logic() -> Result<(), StationlangError> {
+fn run_logic<'a>() -> Result<(), Error<'a>> {
    let args = Args::parse();
    let input_file = args.input_file;

-    let tokenizer: Tokenizer = match input_file {
-        Some(input_file) => Tokenizer::from_path(&input_file)?,
+    let input_string = match input_file {
+        Some(input_path) => {
+            let mut buf = String::new();
+            let mut file = std::fs::File::open(input_path).unwrap();
+            file.read_to_string(&mut buf).unwrap();
+            buf
+        }
        None => {
            let mut buf = String::new();
            let stdin = std::io::stdin();
@@ -62,10 +76,11 @@ fn run_logic() -> Result<(), StationlangError> {
                return Ok(());
            }

-            Tokenizer::from(buf)
+            buf
        }
    };

+    let tokenizer = Tokenizer::from(input_string.as_str());
    let parser = ASTParser::new(tokenizer);

    let mut writer: BufWriter<Box<dyn Write>> = match args.output_file {
@@ -75,20 +90,17 @@ fn run_logic() -> Result<(), StationlangError> {

    let compiler = Compiler::new(parser, &mut writer, None);

-    let mut errors = compiler.compile();
+    let errors = compiler.compile();

    if !errors.is_empty() {
        let mut std_error = stderr();
-        let last = errors.pop();
-        let errors = errors.into_iter().map(StationlangError::from);
+        let errors = errors.into_iter().map(Error::from);

        std_error.write_all(b"Compilation error:\n")?;

        for err in errors {
            std_error.write_all(format!("{}\n", err).as_bytes())?;
        }
-
-        return Err(StationlangError::from(last.unwrap()));
    }

    writer.flush()?;
@@ -96,7 +108,7 @@ fn run_logic() -> Result<(), StationlangError> {
    Ok(())
 }

-fn main() -> Result<(), StationlangError> {
+fn main() -> anyhow::Result<()> {
    run_logic()?;

    Ok(())
Author	SHA1	Message	Date
Devin Bidwell	2b26d0d278	Update changelog	2025-12-11 02:26:20 -07:00
Devin Bidwell	236b50c813	Allow syscalls in infix operations	2025-12-11 02:24:01 -07:00
Devin Bidwell	342b1ab107	Fix function invocation stack underflow	2025-12-11 01:03:43 -07:00
Devin Bidwell	0732f68bcf	Merge pull request #24 from dbidwell94/documentation QOL	2025-12-10 18:01:21 -07:00
Devin Bidwell	0ac010ef8f	Fixed documentation rendering and added ternary expressions	2025-12-10 18:00:20 -07:00
Devin Bidwell	c2208fbb15	Fixed some formatting issues with header markdowns for Stationpedia	2025-12-10 13:39:58 -07:00
Devin Bidwell	295f062797	Merge pull request #23 from dbidwell94/slot-logic Slot logic	2025-12-10 00:11:45 -07:00
Devin Bidwell	9c260ef2d5	Fixed bug where infix wouldn't rewind when encountering a comma, causing the rest of a syscall parse in an assignment expression to fail	2025-12-10 00:09:16 -07:00
Devin Bidwell	0fde11a2bf	Added support for syscalls with assignment expressions	2025-12-09 23:57:19 -07:00
Devin Bidwell	b21d6cc73e	Found bug, unable to do an assignment expression with a syscall	2025-12-09 23:45:10 -07:00
Devin Bidwell	f19801d4e6	Merge pull request #22 from dbidwell94/logos Tech Debt Cleanup	2025-12-09 17:41:02 -07:00
Devin Bidwell	46500a456a	Add support for colorized comments	2025-12-09 17:38:35 -07:00
Devin Bidwell	f60c9b32a8	minor version bump	2025-12-09 16:50:23 -07:00
Devin Bidwell	0cddb3e8c8	The Cows are all working. Moo.	2025-12-09 16:31:24 -07:00
Devin Bidwell	c3986ab4d9	VariableManager lifetime errors	2025-12-09 16:05:40 -07:00
Devin Bidwell	f54214acb9	Most of all the errors are gone	2025-12-09 13:59:54 -07:00
Devin Bidwell	d9a7a31306	Lifetimes are declared, now I gotta fix the lifetime issues	2025-12-09 13:51:54 -07:00
Devin Bidwell	d40b759442	TEST -- use Cow instead of String for tokens	2025-12-09 13:17:35 -07:00
Devin Bidwell	080b5320f7	Removed off-by-one calculations in the C# mod	2025-12-09 12:24:29 -07:00
Devin Bidwell	a50a45f0b4	More cleanup	2025-12-09 12:12:28 -07:00
Devin Bidwell	c531f673a5	Remove quickerror in favor of thiserror	2025-12-09 11:32:14 -07:00
Devin Bidwell	23c2ba4134	Fix visual bugs with new span logic	2025-12-09 02:21:56 -07:00
Devin Bidwell	7b7c1f7d29	Logos plugged into Parser	2025-12-09 02:15:43 -07:00
Devin Bidwell	72cf9ea042	wip	2025-12-09 01:43:12 -07:00
Devin Bidwell	fac36c756b	Lexer impl done	2025-12-08 23:19:23 -07:00
Devin Bidwell	115a57128c	Before error type refactor	2025-12-08 22:50:20 -07:00
Devin Bidwell	6afeec6da2	First pass getting a logos tokenizer up and running	2025-12-08 21:06:42 -07:00
Devin Bidwell	b6123219f8	Merge pull request #21 from dbidwell94/cysharp-removal Updates for Stationeers Beta branch	2025-12-08 15:26:22 -07:00