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🧹 [Extract environment variable accessors] #258

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Merged
github-actions merged 1 commit into from
Oct 7, 2026
Merged

🧹 [Extract environment variable accessors] #258

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263 changes: 141 additions & 122 deletions stdlib/src/env.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,142 @@ use techscript_runtime::{
value::RuntimeValue,
};

pub fn env_get(
ctx: &mut techscript_runtime::context::RuntimeContext,
args: Vec<RuntimeValue>,
) -> Result<RuntimeValue, RuntimeError> {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied".to_string(),
),
None,
None,
));
}
let key = match &args[0] {
RuntimeValue::Str(s) => s.clone(),
_ => {
return Err(RuntimeError::new(
RuntimeErrorKind::TypeMismatch {
expected: "string".to_string(),
found: "other".to_string(),
},
None,
None,
))
}
};
let val = std::env::var(&key).unwrap_or_default();
Ok(RuntimeValue::Str(val))
}

pub fn env_set(
ctx: &mut techscript_runtime::context::RuntimeContext,
args: Vec<RuntimeValue>,
) -> Result<RuntimeValue, RuntimeError> {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied".to_string(),
),
None,
None,
));
}
let key = match &args[0] {
RuntimeValue::Str(s) => s.clone(),
_ => {
return Err(RuntimeError::new(
RuntimeErrorKind::TypeMismatch {
expected: "string".to_string(),
found: "other".to_string(),
},
None,
None,
))
}
};
let val = match &args[1] {
RuntimeValue::Str(s) => s.clone(),
_ => {
return Err(RuntimeError::new(
RuntimeErrorKind::TypeMismatch {
expected: "string".to_string(),
found: "other".to_string(),
},
None,
None,
))
}
};
std::env::set_var(&key, &val);
Ok(RuntimeValue::Null)
}

pub fn env_all(
ctx: &mut techscript_runtime::context::RuntimeContext,
_args: Vec<RuntimeValue>,
) -> Result<RuntimeValue, RuntimeError> {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied".to_string(),
),
None,
None,
));
}
let mut entries = indexmap::IndexMap::new();
for (k, v) in std::env::vars() {
entries.insert(k, RuntimeValue::Str(v));
}
Ok(RuntimeValue::Map {
entries: Rc::new(RefCell::new(entries)),
is_const: true,
})
}

pub fn env_args(
ctx: &mut techscript_runtime::context::RuntimeContext,
_args: Vec<RuntimeValue>,
) -> Result<RuntimeValue, RuntimeError> {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied".to_string(),
),
None,
None,
));
}
let r_args: Vec<RuntimeValue> = std::env::args().map(RuntimeValue::Str).collect();
Ok(RuntimeValue::List {
items: Rc::new(RefCell::new(r_args)),
is_const: false,
})
}

pub fn env_current_dir(
ctx: &mut techscript_runtime::context::RuntimeContext,
_args: Vec<RuntimeValue>,
) -> Result<RuntimeValue, RuntimeError> {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied".to_string(),
),
None,
None,
));
}
let p = std::env::current_dir()
.unwrap_or_default()
.to_string_lossy()
.to_string();
Ok(RuntimeValue::Str(p))
}

impl StdlibRegistry {
pub fn register_env(&mut self) {
let mut exports: HashMap<String, Rc<dyn techscript_runtime::function::Callable>> =
Expand All @@ -18,33 +154,7 @@ impl StdlibRegistry {
Rc::new(StdFunction {
name: "get".to_string(),
arity: 1,
callback: |ctx, args| {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied"
.to_string(),
),
None,
None,
));
}
let key = match &args[0] {
RuntimeValue::Str(s) => s.clone(),
_ => {
return Err(RuntimeError::new(
RuntimeErrorKind::TypeMismatch {
expected: "string".to_string(),
found: "other".to_string(),
},
None,
None,
))
}
};
let val = std::env::var(&key).unwrap_or_default();
Ok(RuntimeValue::Str(val))
},
callback: env_get,
}),
);

Expand All @@ -53,46 +163,7 @@ impl StdlibRegistry {
Rc::new(StdFunction {
name: "set".to_string(),
arity: 2,
callback: |ctx, args| {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied"
.to_string(),
),
None,
None,
));
}
let key = match &args[0] {
RuntimeValue::Str(s) => s.clone(),
_ => {
return Err(RuntimeError::new(
RuntimeErrorKind::TypeMismatch {
expected: "string".to_string(),
found: "other".to_string(),
},
None,
None,
))
}
};
let val = match &args[1] {
RuntimeValue::Str(s) => s.clone(),
_ => {
return Err(RuntimeError::new(
RuntimeErrorKind::TypeMismatch {
expected: "string".to_string(),
found: "other".to_string(),
},
None,
None,
))
}
};
std::env::set_var(&key, &val);
Ok(RuntimeValue::Null)
},
callback: env_set,
}),
);

Expand All @@ -101,26 +172,7 @@ impl StdlibRegistry {
Rc::new(StdFunction {
name: "all".to_string(),
arity: 0,
callback: |ctx, _args| {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied"
.to_string(),
),
None,
None,
));
}
let mut entries = indexmap::IndexMap::new();
for (k, v) in std::env::vars() {
entries.insert(k, RuntimeValue::Str(v));
}
Ok(RuntimeValue::Map {
entries: Rc::new(RefCell::new(entries)),
is_const: true,
})
},
callback: env_all,
}),
);

Expand All @@ -129,24 +181,7 @@ impl StdlibRegistry {
Rc::new(StdFunction {
name: "args".to_string(),
arity: 0,
callback: |ctx, _args| {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied"
.to_string(),
),
None,
None,
));
}
let r_args: Vec<RuntimeValue> =
std::env::args().map(RuntimeValue::Str).collect();
Ok(RuntimeValue::List {
items: Rc::new(RefCell::new(r_args)),
is_const: false,
})
},
callback: env_args,
}),
);

Expand All @@ -155,23 +190,7 @@ impl StdlibRegistry {
Rc::new(StdFunction {
name: "current_dir".to_string(),
arity: 0,
callback: |ctx, _args| {
if !ctx.config.capabilities.contains(&Capability::Environment) {
return Err(RuntimeError::new(
RuntimeErrorKind::InvalidOperation(
"Security policy violation: Environment capability is denied"
.to_string(),
),
None,
None,
));
}
let p = std::env::current_dir()
.unwrap_or_default()
.to_string_lossy()
.to_string();
Ok(RuntimeValue::Str(p))
},
callback: env_current_dir,
}),
);

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