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use crate::lua_generator::{LuaGenerator, ToLua}; use crate::nodes::Block; #[derive(Clone, Debug, PartialEq, Eq)] pub struct FunctionName { name: String, field_names: Vec<String>, method: Option<String>, } impl FunctionName { pub fn new(name: String, field_names: Vec<String>, method: Option<String>) -> Self { Self { name, field_names, method, } } pub fn from_name<S: Into<String>>(name: S) -> Self { Self { name: name.into(), field_names: Vec::new(), method: None, } } pub fn with_fields(mut self, field_names: Vec<String>) -> Self { self.field_names = field_names; self } pub fn with_method(mut self, method: String) -> Self { self.method.replace(method); self } pub fn push_field(&mut self, field: String) { self.field_names.push(field); } pub fn remove_method(&mut self) -> Option<String> { self.method.take() } pub fn get_method(&mut self) -> &Option<String> { &self.method } pub fn get_name(&self) -> &String { &self.name } pub fn set_name(&mut self, name: String) { self.name = name; } } impl ToLua for FunctionName { fn to_lua(&self, generator: &mut LuaGenerator) { generator.push_str(&self.name); self.field_names.iter() .for_each(|field| { generator.push_char('.'); generator.push_str(field); }); if let Some(method_name) = &self.method { generator.push_char(':'); generator.push_str(method_name); }; } } #[derive(Clone, Debug, PartialEq, Eq)] pub struct FunctionStatement { name: FunctionName, block: Block, parameters: Vec<String>, is_variadic: bool, } impl FunctionStatement { pub fn new(name: FunctionName, block: Block, parameters: Vec<String>, is_variadic: bool) -> Self { Self { name, block, parameters, is_variadic, } } pub fn from_name<S: Into<String>>(name: S, block: Block) -> Self { Self { name: FunctionName::from_name(name), block, parameters: Vec::new(), is_variadic: false, } } pub fn append_parameter(mut self, parameter: String) -> Self { self.parameters.push(parameter); self } pub fn variadic(mut self) -> Self { self.is_variadic = true; self } pub fn get_block(&self) -> &Block { &self.block } pub fn mutate_block(&mut self) -> &mut Block { &mut self.block } pub fn mutate_function_name(&mut self) -> &mut FunctionName { &mut self.name } pub fn remove_method(&mut self) { if let Some(method_name) = self.name.remove_method() { self.name.push_field(method_name); self.parameters.insert(0, "self".to_owned()); } } } impl ToLua for FunctionStatement { fn to_lua(&self, generator: &mut LuaGenerator) { generator.push_str("function"); self.name.to_lua(generator); generator.push_char('('); generator.for_each_and_between( &self.parameters, |generator, parameter| generator.push_str(parameter), |generator| generator.push_char(','), ); if self.is_variadic { if self.parameters.len() > 0 { generator.push_char(','); }; generator.push_str("..."); }; generator.push_char(')'); self.block.to_lua(generator); generator.push_str("end"); } } #[cfg(test)] mod test { use super::*; #[test] fn generate_() { let output = FunctionStatement::from_name("foo", Block::default()) .to_lua_string(); assert_eq!(output, "function foo()end"); } }