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< title > fddl Programming Language< / title >
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< h1 > fddl Programming Language< / h1 >
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< section class = "images" >
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< img src = "01.png" alt = "Lexer Screenshot" >
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< img src = "02.png" alt = "Lexer Tests Screenshot" >
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< img src = "03.png" alt = "REPL Screenshot" >
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< img src = "04.png" alt = "Parsing 'hello, world'" >
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< / section >
< h2 > Overview< / h2 >
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< p > fddl is a small programming language inspired by various languages, designed to help learn language implementation concepts in < a href = "https://rust-lang.org" > Rust< / a > .< / p >
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< p > For years, I’ < / p >
< p > fddl was born out of this journey. fddl is my attempt to combine the aspects I appreciate from many languages into something uniquely my own.< / p >
< p > I started learning Rust and have really liked it. I've been following tutorials and the < a href = "http://craftinginterpreters.com/" > Crafting Interpreters< / a > site as guides for this very problematic programming language.< / p >
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< p > I like aspects of so many programming languages, but I don't really like any of them, so I always found it hard to pick one and stick with it. But I had the same problem playing World of Warcraft, too.< / p >
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< p > So I, like many of you, decided to make a hobby programming language to see what may be able to be done with it. This is a brand new project as of September 2024 and I am one person.< / p >
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< p > The fact that I have a REPL working in this language is nothing short of amazing to me. It's fucking magic.< / p >
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< h2 > Features< / h2 >
< ul >
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< li > < strong > Custom syntax< / strong > fddl introduces unique operators and keywords to make programming more intuitive and fun (at least for me)< / li >
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< li > < strong > Lexer< / strong > currently is the only thing working. It tokenizes fddl scripts into understandable pieces of the language.< / li >
< li > < strong > Tilde Operator< / strong > (< code > ~< / code > and < code > ~=< / code > ) when something almost equals something else. I had the idea from watching a video on < a href = "https://www.youtube.com/watch?v=_ZSFRWJCUY4" > Non-Euclidean Doom< / a > .< / li >
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< / ul >
< h2 > Getting Started< / h2 >
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< p > Keep in mind, this is only at the lexer stage currently. It'll read your inputs and that's it.< / p >
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< p > To clone the repo:< / p >
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< pre > < code class = "language-bash" > git clone https://git.fddl.dev/fddl/fddl.git< / code > < / pre >
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< p > To run the REPL:< / p >
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< pre > < code class = "language-bash" > cargo run< / code > < / pre >
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< p > To parse a fddl script:< / p >
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< pre > < code class = "language-bash" > cargo run path/to/script.fddl< / code > < / pre >
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< h2 > Examples:< / h2 >
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< pre > < code class = "language-rust" > func main() {
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// print statement
print("hello, world in fddl");
// variable declaration
let y = 5;
// if statement
if (x > 10) {
print("x is greater than 10");
}
// while loop
while (x < 100 ) {
print(x);
let x = x + 1;
}
}< / code > < / pre >
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< p > At least for right now. I still want to do something odd.< / p >
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< h2 > Running the Project< / h2 >
< p > Make sure your project compiles and the tests pass:< / p >
< pre > < code class = "language-bash" > cargo build
cargo test
cargo run< / code > < / pre >
< p > Again, < code > cargo run< / code > only starts the REPL for testing.< / p >
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< p > running < code > fddl examples.fddl< / code > (from the git repo) produces < a href = "examples-output.txt" > the following< / a > .< / p >
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< div class = "notes" >
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< h2 > Goals and Projections:< / h2 >
< p > < strong > Note:< / strong > This is not a final list; it's words on paper (metaphorically) at the time of writing.< / p >
< p > < strong > < code > Lexer< / code > :< / strong > < / p >
< ul >
< li class = "task-list-item" > < input type = "checkbox" checked disabled > Built and tested for basic syntax and operators.< / li >
< li class = "task-list-item" > < input type = "checkbox" checked disabled > Supports single-line and documentation comments.< / li >
< li class = "task-list-item" > < input type = "checkbox" disabled > Add support for more complex syntax and features.< / li >
< / ul >
< p > < strong > < code > Parser< / code > :< / strong > < / p >
< ul >
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< li class = "task-list-item" > < input type = "checkbox" disabled > Working on building out functions to parse simple functionality in the language (if, while, for), and to read their expressions and values< / li >
< li class = "task-list-item" > < input type = "checkbox" disabled > Implement parsing for function calls, expressions, checks, literally everything.< / li >
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< / ul >
< p > < strong > < code > Compiler< / code > :< / strong > < / p >
< ul >
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< li class = "task-list-item" > < input type = "checkbox" disabled > Currently a placeholder. We're a long way from here. If I see this step I'll be lucky.< / li >
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< / ul >
< p > < strong > Comments:< / strong > < / p >
< ul >
< li class = "task-list-item" > < input type = "checkbox" checked disabled > Added support for single-line and documentation comments.< / li >
< li class = "task-list-item" > < input type = "checkbox" disabled > Implement multi-line comments.< / li >
< li class = "task-list-item" > < input type = "checkbox" disabled > Implement document building comments.< / li >
< / ul >
< p > < strong > Error Handling:< / strong > < / p >
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< ul >
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< li class = "task-list-item" > < input type = "checkbox" disabled > Replace < code > stderr< / code > with a more robust error handling mechanism..< / li >
< / ul >
< p > < strong > Testing:< / strong > < / p >
< ul >
< li class = "task-list-item" > < input type = "checkbox" checked disabled > Added initial < code > lexer< / code > tests.< / li >
< li class = "task-list-item" > < input type = "checkbox" disabled > Expand tests to cover more syntax and edge cases.< / li >
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< / ul >
< / div >
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< h2 > License< / h2 >
< p > This project is licensed under the MIT License.< / p >
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< p > < a href = "/cdn-cgi/l/email-protection#cabeb8a3b9beaba48aacaeaea6e4aeafbc" > Contact< / a > < / p >
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< p > < a href = "https://git.fddl.dev/fddl/fddl" > Git repo< / a > < / p >
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© 2024 fddl Programming Language
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