TSol Compiler (tsolc)

Stdlibs at: https://github.com/stefand-0/solstd

Sol — Embrace modularity, ease of use, and speed.

Sol is a lightweight scripting language that compiles to C. It gives you the raw performance of C with a cleaner, more modern syntax — and a module system that actually makes sense.

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Why Sol?

C is fast. C is everywhere. But C is also verbose, error-prone, and lacks a sane way to organize code across files.

Sol fixes that.

• Modular by design — get("path/to/module.sol") imports just work, including nested subdirectories
• Familiar syntax — C-style types and control flow, minus the footguns
• Zero-cost abstraction — transpiles to clean C, then compiles with clang or gcc
• No build system headaches — one command compiles and runs

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Install

pip install tsolc

Requires Python 3.10+ and a C compiler (clang, gcc, or cc).

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Also see:

showcase/showcase.sol

Quick Start

hello.sol

main() out int
    out("Hello, World!\n")
    return 0

tsolc hello.sol --run

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Language Features

Types

Sol	C
int, float, double, char,	Same
string	char*
int8–int64, uint8–uint64	int8_t–int64_t, uint8_t–uint64_t
int[], float[], ...	Pointer + compound literal

Variables & Assignment

int count -> 42
float pi -> 3.14
string name -> "Sol"
int[] nums -> [1, 2, 3, 4, 5]

Assignment uses -> to avoid confusion with ==:

count -> count + 1

Functions

pub square(int n) out int
    return n * n

• pub marks the function as public (importable from other files)
• out type specifies the return type; omit for void

Imports

get("std/math.sol")
get("utils/helpers.sol")

Paths are relative to the importing file. Subdirectories work naturally:

get("std/io/file.sol")
get("../shared/types.sol")

Imports are deduplicated automatically — no header guards needed.

Control Flow

Indentation-based blocks — no braces, no end keyword:

if (x > 0)
    out("positive\n")
elseif (x < 0)
    out("negative\n")
else
    out("zero\n")
int i 
for i -> 0; i < 10; i++
    out("%d\n", i)

while (running)
    running -> false

Ternary / Guard Operator

string sign -> x > 0 ? "positive" : "negative"
int abs -> x < 0 ? -x : x

Console I/O

// Output
out("Hello, %s!\n", name)

// Input can be done with inline C

Raw C Injection

Drop straight into C when you need it:

C -> "double result = 2.0;"

Structs

struct Point
    float x
    float y

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Project Structure Example

myproject/
├── main.sol
├── std/
│   └── math.sol
└── utils/
    └── string.sol

main.sol

get("std/math.sol")

main() out int
    int result -> pow(2, 10)
    out("2^10 = %d\n", result)
    return 0

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CLI Usage

tsolc file.sol           # Compile only
tsolc file.sol --run     # Compile and run
tsolc file.sol --keep-c  # Keep the generated .c file

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How It Works

1. Parse — Sol source is tokenized and parsed into an AST (indentation-aware)
2. Resolve — get() imports are recursively resolved and merged
3. Generate — Clean C11 code is emitted (structs first, then forward declarations, then definitions)
4. Compile — clang/gcc compiles the C to a native executable
5. Run — The binary is executed (with ./ prefix and proper permissions on Unix)

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License

MIT — see LICENSE for details.