Kill old trait

src/language.rs

@@ -18,86 +18,6 @@ pub struct ParseError {
 
 pub struct LLVMCodeString(pub String);
 
-pub trait ProgrammingLanguage {
-    type Token: Debug;
-    type AST: Debug;
-    type Evaluator: EvaluationMachine;
-
-    fn name() -> String;
-    fn tokenize(input: &str) -> Result<Vec<Self::Token>, TokenError>;
-    fn parse(input: Vec<Self::Token>) -> Result<Self::AST, ParseError>;
-    fn evaluate(ast: Self::AST, evaluator: &mut Self::Evaluator) -> Vec<String>;
-    fn compile(ast: Self::AST) -> LLVMCodeString;
-}
-
-pub trait EvaluationMachine {
-    fn set_option(&mut self, option: &str, value: bool) -> bool;
-    fn new() -> Self;
-}
-
-#[derive(Default)]
-pub struct LanguageInterfaceOptions {
-    pub show_parse: bool,
-    pub show_tokens: bool,
-    pub show_llvm_ir: bool,
-}
-
-pub trait LanguageInterface {
-    fn evaluate_in_repl(&mut self, input: &str, options: LanguageInterfaceOptions) -> String;
-    fn get_language_name(&self) -> String;
-    fn set_option(&mut self, option: &str, value: bool) -> bool;
-}
-
-impl<PL, T, A, E> LanguageInterface for (PL, PL::Evaluator) where PL: ProgrammingLanguage<Token=T, AST=A, Evaluator=E>, T: Debug, A: Debug, E: EvaluationMachine {
-    fn set_option(&mut self, option: &str, value: bool) -> bool {
-        self.1.set_option(option, value)
-    }
-    fn get_language_name(&self) -> String {
-        PL::name()
-    }
-    fn evaluate_in_repl(&mut self, input: &str, options: LanguageInterfaceOptions) -> String {
-        let mut output = String::new();
-
-        let tokens = match PL::tokenize(input) {
-            Ok(tokens) => tokens,
-            Err(err) => {
-                output.push_str(&format!("Tokenization error: {}\n", err.msg));
-                return output;
-            }
-        };
-
-        if options.show_tokens {
-            output.push_str(&format!("Tokens: {:?}\n", tokens));
-        }
-
-        let ast = match PL::parse(tokens) {
-            Ok(ast) => ast,
-            Err(err) => {
-                output.push_str(&format!("Parse error: {:?}\n", err.msg));
-                return output;
-            }
-        };
-
-        if options.show_parse {
-            output.push_str(&format!("AST: {:?}\n", ast));
-        }
-
-        if options.show_llvm_ir {
-            let LLVMCodeString(s) = PL::compile(ast);
-            output.push_str(&s);
-        } else {
-            // for now only handle last output
-            let ref mut evaluator = self.1;
-            let mut full_output: Vec<String> = PL::evaluate(ast, evaluator);
-            output.push_str(&full_output.pop().unwrap_or("".to_string()));
-        }
-        output
-    }
-}
-
-/* below here is new versions of everything */
-
-
 #[derive(Debug, Default)]
 pub struct EvalOptions {
   pub debug_tokens: bool,
@@ -109,9 +29,6 @@ pub struct EvalOptions {
 pub trait ProgrammingLanguageInterface {
   fn evaluate_in_repl(&mut self, input: &str, eval_options: EvalOptions) -> Vec<String>;
   fn get_language_name(&self) -> String;
-  fn set_option(&mut self, option: &str, value: bool) -> bool {
-    false
-  }
 }
 
 pub trait CompileableLanguage : ProgrammingLanguageInterface {

src/main.rs

@@ -33,10 +33,6 @@ fn main() {
         Box::new(schala_lang::Schala::new()),
         Box::new(maaru_lang::Maaru::new()),
         Box::new(robo_lang::Robo::new()),
-            /*
-            Box::new((schala_lang::Schala::new(), schala_lang::SchalaEvaluator::new())),
-            Box::new((maaru_lang::Maaru::new(), maaru_lang::MaaruEvaluator::new(None))),
-            */
       ];
 
     let option_matches =
@@ -126,7 +122,7 @@ fn program_options() -> getopts::Options {
     options
 }
 
-fn run_noninteractive<T: ProgrammingLanguageInterface>(filename: &str, language: &mut T, options: EvalOptions, compile: bool) {
+fn run_noninteractive<T: ProgrammingLanguageInterface>(filename: &str, language: &mut T, _options: EvalOptions, compile: bool) {
   let mut source_file = File::open(&Path::new(filename)).unwrap();
   let mut buffer = String::new();
   source_file.read_to_string(&mut buffer).unwrap();
@@ -306,8 +302,8 @@ impl Repl {
                     Some(&"tokens") => self.show_tokens = show,
                     Some(&"parse") => self.show_parse = show,
                     Some(&"eval") => {
-                        let ref mut language = self.languages[self.current_language_index];
+                        //let ref mut language = self.languages[self.current_language_index];
-                        language.set_option("trace_evaluation", show);
+                        //language.set_option("trace_evaluation", show);
                     },
                     Some(&"llvm") => self.show_llvm_ir = show,
                     Some(e) => {

src/robo_lang/mod.rs

@@ -1,7 +1,7 @@
 extern crate itertools;
 use self::itertools::Itertools;
 
-use language::{ProgrammingLanguageInterface, EvalOptions, ProgrammingLanguage, ParseError, TokenError, LLVMCodeString};
+use language::{ProgrammingLanguageInterface, EvalOptions, ParseError, TokenError, LLVMCodeString};
 
 pub struct Robo {
 }
@@ -137,7 +137,7 @@ impl ProgrammingLanguageInterface for Robo {
     "Robo".to_string()
   }
 
-  fn evaluate_in_repl(&mut self, input: &str, eval_options: EvalOptions) -> Vec<String> {
+  fn evaluate_in_repl(&mut self, input: &str, _eval_options: EvalOptions) -> Vec<String> {
     let mut output = vec!();
     let tokens = match tokenize(input) {
       Ok(tokens) => tokens,