repo_description: A portable programming language with a compact intermediate representation
repo_topics: c compiler compiler-design golang
code: use super::Target;
  use std::{
      env::consts::EXE_SUFFIX,
      fs::{remove_file, write},
      io::{Error, ErrorKind, Result, Write},
      process::{Command, Stdio},
  };
  
  pub struct TS;
  impl Target for TS {
      fn get_name(&self) -> char {
          't'
      }
  
      fn is_standard(&self) -> bool {
          true
      }
  
      fn std(&self) -> String {
          String::from(include_str!("std/std.ts"))
      }
  
      fn core_prelude(&self) -> String {
          String::from(include_str!("core/core.ts"))
      }
  
      fn core_postlude(&self) -> String {
          String::new()
      }
  
      fn begin_entry_point(&self, global_scope_size: i32, memory_size: i32) -> String {
          format!(
              "async function OAKmain():Promise<void> {{\nlet vm = machine_new({}, {});\n",
              global_scope_size,
              global_scope_size + memory_size,
          )
      }
  
      fn end_entry_point(&self) -> String {
          String::from("\nmachine_drop(vm);\n}\nOAKmain();")
      }
  
      fn establish_stack_frame(&self, arg_size: i32, local_scope_size: i32) -> String {
          format!(
              "machine_establish_stack_frame(vm, {}, {});\n",
              arg_size, local_scope_size
          )
      }
  
      fn end_stack_frame(&self, return_size: i32, local_scope_size: i32) -> String {
          format!(
              "machine_end_stack_frame(vm, {}, {});\n",
              return_size, local_scope_size
          )
      }
  
      fn load_base_ptr(&self) -> String {
          String::from("machine_load_base_ptr(vm);\n")
      }
  
      fn push(&self, n: f64) -> String {
          format!("machine_push(vm, {});\n", n)
      }
  
      fn add(&self) -> String {
          String::from("machine_add(vm);\n")
      }
  
      fn subtract(&self) -> String {
          String::from("machine_subtract(vm);\n")
      }
  
      fn multiply(&self) -> String {
          String::from("machine_multiply(vm);\n")
      }
  
      fn divide(&self) -> String {
          String::from("machine_divide(vm);\n")
      }
  
      fn sign(&self) -> String {
          String::from("machine_sign(vm);\n")
      }
  
      fn allocate(&self) -> String {
          String::from("machine_allocate(vm);\n")
      }
  
      fn free(&self) -> String {
          String::from("machine_free(vm);\n")
      }
  
      fn store(&self, size: i32) -> String {
          format!("machine_store(vm, {});\n", size)
      }
  
      fn load(&self, size: i32) -> String {
          format!("machine_load(vm, {});\n", size)
      }
  
      fn fn_header(&self, name: String) -> String {
          String::from("")
      }
  
      fn fn_definition(&self, name: String, body: String) -> String {
          format!("async function {}(vm: machine): void {{ {}}}\n", name, body)
      }
  
      fn call_fn(&self, name: String) -> String {
          format!("await {}(vm);\n", name)
      }
  
      fn call_foreign_fn(&self, name: String) -> String {
          format!("await {}(vm);\n", name)
      }
  
      fn begin_while(&self) -> String {
          String::from("while (machine_pop(vm)) {\n")
      }
  
      fn end_while(&self) -> String {
          String::from("}\n")
      }
  
      fn compile(&self, code: String) -> Result<()> {
          if let Ok(_) = write("OUTPUT.ts", code) {
              if let Ok(_) = Command::new("tsc")
                  .arg("OUTPUT.ts")
                  .arg("--outFile")
                  .arg("main.js")
                  .arg("--target")
                  .arg("ES2017")
                  .output()
              {
                  if let Ok(_) = remove_file("OUTPUT.ts") {
                      return Result::Ok(());
                  }
              }
          }
          Result::Err(Error::new(ErrorKind::Other, "error compiling "))
      }
  }
  