pub fn load(source: &str, module: &mut Module) -> Result<(), String>
Expand description
Loads source from file.
Examples found in repository?
examples/functions.rs (line 41)
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fn load_module() -> Option<dyon::Module> {
use dyon::Type::*;
use dyon::{error, load, Dfn, Module};
let mut module = Module::new();
module.add_str("say_hello", say_hello, Dfn::nl(vec![], Void));
module.add_str("homer", homer, Dfn::nl(vec![], Any));
module.add_str("age", age, Dfn::nl(vec![Any], Any));
module.add_str("mr", mr, Dfn::nl(vec![Str; 2], Str));
module.add_str("origo", origo, Dfn::nl(vec![], Object));
module.add_str("id", id, Dfn::nl(vec![], Mat4));
// Register custom Rust object with an ad-hoc type.
let ty_custom_object = AdHoc(Arc::new("CustomObject".into()), Box::new(Any));
module.add_str(
"custom_object",
custom_object,
Dfn::nl(vec![], ty_custom_object.clone()),
);
module.add_str(
"print_custom_object",
print_custom_object,
Dfn::nl(vec![ty_custom_object.clone()], Void),
);
if error(load("source/functions/loader.dyon", &mut module)) {
None
} else {
Some(module)
}
}
More examples
examples/dyon.rs (line 120)
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fn main() {
let mut file: Option<String> = None;
let mut imports: Vec<Module> = vec![];
let mut module = Module::new();
let mut ctx = String::new();
println!("=== Dyon 0.49 ===");
println!("Type `help` for more information.");
loop {
if let Some(x) = file.as_ref() {
print!("({}) ", x);
}
print!("> ");
let _ = std::io::stdout().flush();
let mut input = String::new();
std::io::stdin().read_line(&mut input).expect("Expected input");
let command = input.trim().to_string();
if command == "\\" {
input = String::new();
let mut empty_lines = 0;
loop {
let mut line = String::new();
std::io::stdin().read_line(&mut line).expect("Expected input");
if line.trim() == "" {
empty_lines += 1;
if empty_lines >= 2 {break}
} else {
if empty_lines > 0 {input.push_str("\n")}
empty_lines = 0;
input.push_str(&line);
}
}
}
match &*command {
"bye" => break,
"ctx" => {
println!("{}", ctx);
continue;
}
"clear" => {
ctx = String::new();
module = Module::new();
file = None;
continue;
}
"help" => {
println!("{}", include_str!("../assets/repl/help.txt"));
continue;
}
"save" => {
if let Some(x) = file.as_ref() {
if std::fs::write(x, &ctx).is_err() {
println!("Saving failed.");
}
} else {
println!("Could not save.\nUse `save \"<file>\"`.");
}
continue;
}
_ if command.starts_with("save ") => {
let new_file = if let Some(x) = json_str(&command[5..]) {x}
else {
println!("Saving failed.");
continue;
};
if std::fs::write(&new_file, &ctx).is_err() {
println!("Saving failed.");
continue;
}
file = Some(new_file);
continue;
}
_ if command.starts_with("load ") => {
println!("Loading...");
let new_file = if let Some(x) = json_str(&command[5..]) {x}
else {
println!("Loading failed.");
continue;
};
println!(" {}", new_file);
ctx = match std::fs::read_to_string(&new_file) {
Ok(x) => x,
Err(_) => {
println!("Could not load {}", new_file);
continue;
}
};
file = Some(new_file);
if reload(&ctx, &mut module, &imports) {
continue;
}
println!("Done!");
continue;
}
_ if command.starts_with("import ") => {
println!("Importing...");
let file = if let Some(x) = json_str(&command[7..]) {x}
else {
println!("Import failed.");
continue;
};
println!(" {}", file);
let mut m = Module::new();
if error(load(&file, &mut m)) {
continue;
}
imports.push(m);
if reload(&ctx, &mut module, &imports) {
continue;
}
println!("Done!");
continue;
}
_ if command.starts_with("call ") => {
let f = if let Some(x) = json_str(&command[5..]) {x}
else {
println!("Could not call function.");
continue;
};
input = format!("{{\n{}()\nreturn\n}}\n", f);
}
"" => {
// Print separator for readability.
print!("\n------------------------------------<o=o");
println!("o=o>------------------------------------\n");
continue;
}
_ => {}
}
let mut sub_module = Module::new();
sub_module.import(&module);
let res = load_str("dyonrepl", Arc::new(input.clone()), &mut sub_module);
if res.is_err() {
// Try evaluation expression.
let code = format!("fn main() {{println({})}}", input);
if error(run_str_with_module("dyonrepl", Arc::new(code), &module)) {
error(res);
}
} else {
println!("{}", input);
ctx.push_str(&input);
if reload(&ctx, &mut module, &imports) {
continue;
}
}
}
}