56 lines
2.5 KiB
Rust
56 lines
2.5 KiB
Rust
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use super::super::NyashRunner;
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use crate::{parser::NyashParser, mir::MirCompiler, backend::MirInterpreter};
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use std::{fs, process};
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impl NyashRunner {
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/// Lightweight VM fallback using the in-crate MIR interpreter.
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/// - Respects using preprocessing done earlier in the pipeline
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/// - Relies on global plugin host initialized by runner
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pub(crate) fn execute_vm_fallback_interpreter(&self, filename: &str) {
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// Read source
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let code = match fs::read_to_string(filename) {
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Ok(s) => s,
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Err(e) => { eprintln!("❌ Error reading file {}: {}", filename, e); process::exit(1); }
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};
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// Using preprocessing (strip + autoload)
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let mut code2 = code;
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if crate::config::env::enable_using() {
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match crate::runner::modes::common_util::resolve::strip_using_and_register(self, &code2, filename) {
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Ok(s) => { code2 = s; }
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Err(e) => { eprintln!("❌ {}", e); process::exit(1); }
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}
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}
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// Dev sugar pre-expand: @name = expr → local name = expr
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code2 = crate::runner::modes::common_util::resolve::preexpand_at_local(&code2);
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// Parse -> expand macros -> compile MIR
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let ast = match NyashParser::parse_from_string(&code2) {
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Ok(ast) => ast,
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Err(e) => { eprintln!("❌ Parse error: {}", e); process::exit(1); }
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};
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let ast = crate::r#macro::maybe_expand_and_dump(&ast, false);
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let mut compiler = MirCompiler::with_options(!self.config.no_optimize);
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let compile = match compiler.compile(ast) {
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Ok(c) => c,
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Err(e) => { eprintln!("❌ MIR compilation error: {}", e); process::exit(1); }
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};
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// Optional barrier-elision for parity with VM path
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let mut module_vm = compile.module.clone();
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if std::env::var("NYASH_VM_ESCAPE_ANALYSIS").ok().as_deref() == Some("1") {
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let removed = crate::mir::passes::escape::escape_elide_barriers_vm(&mut module_vm);
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if removed > 0 { crate::cli_v!("[VM-fallback] escape_elide_barriers: removed {} barriers", removed); }
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}
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// Execute via MIR interpreter
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let mut vm = MirInterpreter::new();
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match vm.execute_module(&module_vm) {
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Ok(_ret) => { /* interpreter already prints via println/console in program */ }
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Err(e) => {
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eprintln!("❌ VM fallback error: {}", e);
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process::exit(1);
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}
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}
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}
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}
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