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use super::Target; use std::{ fs::{remove_file, write}, io::{Error, ErrorKind, Result}, process::Command, }; pub struct Go; impl Target for Go { fn get_name(&self) -> char { 'g' } fn std(&self) -> String { String::from(include_str!("std/std.go")) } fn core_prelude(&self) -> String { String::from(include_str!("core/core.go")) } fn core_postlude(&self) -> String { String::new() } fn begin_entry_point(&self, global_scope_size: i32, memory_size: i32) -> String { format!( "func main() {{\nvm := machine_new({}, {})\n", global_scope_size, global_scope_size + memory_size, ) } fn end_entry_point(&self) -> String { String::from("\nvm.drop()\n}") } fn establish_stack_frame(&self, arg_size: i32, local_scope_size: i32) -> String { format!( "vm.establish_stack_frame({}, {})\n", arg_size, local_scope_size ) } fn end_stack_frame(&self, return_size: i32, local_scope_size: i32) -> String { format!( "vm.end_stack_frame({}, {})\n", return_size, local_scope_size ) } fn load_base_ptr(&self) -> String { String::from("vm.load_base_ptr()\n") } fn push(&self, n: f64) -> String { format!("vm.push({})\n", n) } fn add(&self) -> String { String::from("vm.add()\n") } fn subtract(&self) -> String { String::from("vm.subtract()\n") } fn multiply(&self) -> String { String::from("vm.multiply()\n") } fn divide(&self) -> String { String::from("vm.divide()\n") } fn sign(&self) -> String { String::from("vm.sign()\n") } fn allocate(&self) -> String { String::from("vm.allocate()\n") } fn free(&self) -> String { String::from("vm.free()\n") } fn store(&self, size: i32) -> String { format!("vm.store({})\n", size) } fn load(&self, size: i32) -> String { format!("vm.load({})\n", size) } fn fn_header(&self, name: String) -> String { String::new() } fn fn_definition(&self, name: String, body: String) -> String { format!("\n\nfunc {}(vm *machine) {{\n{}\n}}\n", name, body) } fn call_fn(&self, name: String) -> String { format!("{}(vm);\n", name) } fn call_foreign_fn(&self, name: String) -> String { format!("{}(vm);\n", name) } fn begin_while(&self) -> String { String::from("for vm.pop() != 0.0 {\n") } fn end_while(&self) -> String { String::from("}\n") } fn compile(&self, code: String) -> Result<()> { if let Ok(_) = write("main.go", code) { if let Ok(_) = Command::new("go").arg("build").arg("main.go").output() { if let Ok(_) = remove_file("main.go") { return Result::Ok(()); } } } Result::Err(Error::new( ErrorKind::Other, "could not compile output golang code. is golang installed?", )) } }