flowcode-core 0.4.3-alpha

Core execution engine for FlowCode data scripting language
Documentation 
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// Prediction command implementation
use crate::ast::ArgValue;
use crate::FCError;

/// Linear extrapolation using the last two numeric values inside provided
/// arguments. Non-numeric items cause a higher-level error, so this function
/// assumes inputs are numeric.
pub fn predict(args: &[ArgValue]) -> Result<String, FCError> {
    let input_data = match args.get(0) {
        Some(ArgValue::String(s)) => s.clone(),
        Some(other) => return Err(FCError::InvalidArgument(format!("Expected string for input, got {:?}", other))),
        None => return Err(FCError::InsufficientData("Missing input data".to_string())),
    };

    let model = match args.get(1) {
        Some(ArgValue::String(s)) => s.clone(),
        Some(other) => return Err(FCError::InvalidArgument(format!("Expected string for model, got {:?}", other))),
        None => return Err(FCError::InsufficientData("Missing model specification".to_string())),
    };

    // Placeholder for actual prediction logic
    let result = format!("Predicted outcome for input '{}' using model '{}': [Placeholder result]", input_data, model);
    Ok(result)
}