Function generate_constant_name

src/code_actions/extract_constant.rs:205–257

Generate a SCREAMING_SNAKE_CASE constant name from a literal value.

(value: &str)

/// Generate a SCREAMING_SNAKE_CASE constant name from a literal value.
fn generate_constant_name(value: &str) -> String {
    let trimmed = value.trim();
    let lower = trimmed.to_ascii_lowercase();

    // Boolean
    if lower == "true" {
        return "IS_ENABLED".to_string();
    }
    if lower == "false" {
        return "IS_DISABLED".to_string();
    }
    if lower == "null" {
        return "DEFAULT_VALUE".to_string();
    }

    // String literal — strip quotes and convert to SCREAMING_SNAKE_CASE
    if (trimmed.starts_with('\'') && trimmed.ends_with('\''))
        || (trimmed.starts_with('"') && trimmed.ends_with('"'))
    {
        let inner = &trimmed[1..trimmed.len() - 1];
        let name = string_to_screaming_snake(inner);
        if !name.is_empty() && name.chars().next().is_some_and(|c| c.is_ascii_alphabetic()) {
            return name;
        }
        return "CONSTANT".to_string();
    }

    // Negative numeric
    if let Some(stripped) = trimmed.strip_prefix('-') {
        let abs = stripped.trim_start();
        if abs.contains('.') || abs.contains('e') || abs.contains('E') {
            return "VALUE".to_string();
        }
        return format!("VALUE_{}", abs.replace('_', ""));
    }

    // Numeric literal
    if is_numeric_literal(trimmed) {
        // Float
        if trimmed.contains('.') || trimmed.contains('e') || trimmed.contains('E') {
            return "VALUE".to_string();
        }
        // Integer — use VALUE_NNN
        return format!("VALUE_{}", trimmed.replace('_', ""));
    }

    // Concatenated string expression — try to use the first segment
    if is_concat_expression(trimmed) {
        return "CONSTANT".to_string();
    }

    "CONSTANT".to_string()
}

/// Determine the PHP type name for a literal value.
///