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Add simple string functions

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This commit is contained in:
Ava Hahn 2023-03-08 11:39:54 -08:00
parent 8bf4b3c368
commit d4121a734a
Signed by untrusted user who does not match committer: affine
GPG key ID: 3A4645B8CF806069
4 changed files with 366 additions and 190 deletions
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63
src/stl.rs
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@ -24,7 +24,7 @@ pub mod boolean;
pub mod control;
pub mod decl;
pub mod math;
//pub mod str;
pub mod strings;
/// static_stdlib
/// inserts all stdlib functions that can be inserted without
@ -47,8 +47,52 @@ pub fn static_stdlib(syms: &mut SymTable) -> Result<(), String> {
name: String::from("echo"),
args: Args::Infinite,
conditional_branches: false,
docs: ECHO_DOCSTRING.to_string(),
value: ValueType::Internal(Rc::new(_echo_callback)),
docs: strings::ECHO_DOCSTRING.to_string(),
value: ValueType::Internal(Rc::new(strings::echo_callback)),
},
);
syms.insert(
"concat".to_string(),
Symbol {
name: String::from("concat"),
args: Args::Infinite,
conditional_branches: false,
docs: strings::CONCAT_DOCSTRING.to_string(),
value: ValueType::Internal(Rc::new(strings::concat_callback)),
},
);
syms.insert(
"contains".to_string(),
Symbol {
name: String::from("contains"),
args: Args::Strict(vec![Type::String, Type::String]),
conditional_branches: false,
docs: strings::CONTAINS_DOCSTRING.to_string(),
value: ValueType::Internal(Rc::new(strings::contains_callback)),
},
);
syms.insert(
"strlen".to_string(),
Symbol {
name: String::from("strlen"),
args: Args::Lazy(1),
conditional_branches: false,
docs: strings::STRLEN_DOCSTRING.to_string(),
value: ValueType::Internal(Rc::new(strings::strlen_callback)),
},
);
syms.insert(
"string".to_string(),
Symbol {
name: String::from("string"),
args: Args::Lazy(1),
conditional_branches: false,
docs: strings::STRCAST_DOCSTRING.to_string(),
value: ValueType::Internal(Rc::new(strings::strcast_callback)),
},
);
@ -402,16 +446,3 @@ pub fn dynamic_stdlib(syms: &mut SymTable) -> Result<(), String> {
Ok(())
}
pub const ECHO_DOCSTRING: &str =
"traverses any number of arguments. Prints their evaluated values on a new line for each.";
fn _echo_callback(ast: &Seg, _syms: &mut SymTable) -> Result<Ctr, String> {
if ast.len() == 1 {
println!("{}", ast.car);
} else {
ast.circuit(&mut |arg: &Ctr| print!("{}", arg) == ());
}
Ok(Ctr::None)
}