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Diffstat (limited to 'src/librustc/session/mod.rs')
| -rw-r--r-- | src/librustc/session/mod.rs | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/src/librustc/session/mod.rs b/src/librustc/session/mod.rs new file mode 100644 index 00000000000..d723db7706f --- /dev/null +++ b/src/librustc/session/mod.rs @@ -0,0 +1,277 @@ +// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + + +use metadata::cstore::CStore; +use metadata::filesearch; +use lint; +use util::nodemap::NodeMap; + +use syntax::ast::NodeId; +use syntax::codemap::Span; +use syntax::diagnostic::{mod, Emitter}; +use syntax::diagnostics; +use syntax::feature_gate; +use syntax::parse; +use syntax::parse::token; +use syntax::parse::ParseSess; +use syntax::{ast, codemap}; + +use std::os; +use std::cell::{Cell, RefCell}; + +pub mod config; + +// Represents the data associated with a compilation +// session for a single crate. +pub struct Session { + pub target: config::Config, + pub opts: config::Options, + pub cstore: CStore, + pub parse_sess: ParseSess, + // For a library crate, this is always none + pub entry_fn: RefCell<Option<(NodeId, codemap::Span)>>, + pub entry_type: Cell<Option<config::EntryFnType>>, + pub plugin_registrar_fn: Cell<Option<ast::NodeId>>, + pub default_sysroot: Option<Path>, + // The name of the root source file of the crate, in the local file system. The path is always + // expected to be absolute. `None` means that there is no source file. + pub local_crate_source_file: Option<Path>, + pub working_dir: Path, + pub lint_store: RefCell<lint::LintStore>, + pub lints: RefCell<NodeMap<Vec<(lint::LintId, codemap::Span, String)>>>, + pub crate_types: RefCell<Vec<config::CrateType>>, + pub crate_metadata: RefCell<Vec<String>>, + pub features: RefCell<feature_gate::Features>, + + /// The maximum recursion limit for potentially infinitely recursive + /// operations such as auto-dereference and monomorphization. + pub recursion_limit: Cell<uint>, +} + +impl Session { + pub fn span_fatal(&self, sp: Span, msg: &str) -> ! { + self.diagnostic().span_fatal(sp, msg) + } + pub fn fatal(&self, msg: &str) -> ! { + self.diagnostic().handler().fatal(msg) + } + pub fn span_err(&self, sp: Span, msg: &str) { + self.diagnostic().span_err(sp, msg) + } + pub fn span_err_with_code(&self, sp: Span, msg: &str, code: &str) { + self.diagnostic().span_err_with_code(sp, msg, code) + } + pub fn err(&self, msg: &str) { + self.diagnostic().handler().err(msg) + } + pub fn err_count(&self) -> uint { + self.diagnostic().handler().err_count() + } + pub fn has_errors(&self) -> bool { + self.diagnostic().handler().has_errors() + } + pub fn abort_if_errors(&self) { + self.diagnostic().handler().abort_if_errors() + } + pub fn span_warn(&self, sp: Span, msg: &str) { + self.diagnostic().span_warn(sp, msg) + } + pub fn span_warn_with_code(&self, sp: Span, msg: &str, code: &str) { + self.diagnostic().span_warn_with_code(sp, msg, code) + } + pub fn warn(&self, msg: &str) { + self.diagnostic().handler().warn(msg) + } + pub fn span_note(&self, sp: Span, msg: &str) { + self.diagnostic().span_note(sp, msg) + } + pub fn span_end_note(&self, sp: Span, msg: &str) { + self.diagnostic().span_end_note(sp, msg) + } + pub fn span_help(&self, sp: Span, msg: &str) { + self.diagnostic().span_help(sp, msg) + } + pub fn fileline_note(&self, sp: Span, msg: &str) { + self.diagnostic().fileline_note(sp, msg) + } + pub fn note(&self, msg: &str) { + self.diagnostic().handler().note(msg) + } + pub fn help(&self, msg: &str) { + self.diagnostic().handler().note(msg) + } + pub fn span_bug(&self, sp: Span, msg: &str) -> ! { + self.diagnostic().span_bug(sp, msg) + } + pub fn bug(&self, msg: &str) -> ! { + self.diagnostic().handler().bug(msg) + } + pub fn span_unimpl(&self, sp: Span, msg: &str) -> ! { + self.diagnostic().span_unimpl(sp, msg) + } + pub fn unimpl(&self, msg: &str) -> ! { + self.diagnostic().handler().unimpl(msg) + } + pub fn add_lint(&self, + lint: &'static lint::Lint, + id: ast::NodeId, + sp: Span, + msg: String) { + let lint_id = lint::LintId::of(lint); + let mut lints = self.lints.borrow_mut(); + match lints.get_mut(&id) { + Some(arr) => { arr.push((lint_id, sp, msg)); return; } + None => {} + } + lints.insert(id, vec!((lint_id, sp, msg))); + } + pub fn next_node_id(&self) -> ast::NodeId { + self.parse_sess.next_node_id() + } + pub fn reserve_node_ids(&self, count: ast::NodeId) -> ast::NodeId { + self.parse_sess.reserve_node_ids(count) + } + pub fn diagnostic<'a>(&'a self) -> &'a diagnostic::SpanHandler { + &self.parse_sess.span_diagnostic + } + pub fn debugging_opt(&self, opt: u64) -> bool { + (self.opts.debugging_opts & opt) != 0 + } + pub fn codemap<'a>(&'a self) -> &'a codemap::CodeMap { + &self.parse_sess.span_diagnostic.cm + } + // This exists to help with refactoring to eliminate impossible + // cases later on + pub fn impossible_case(&self, sp: Span, msg: &str) -> ! { + self.span_bug(sp, + format!("impossible case reached: {}", msg).as_slice()); + } + pub fn verbose(&self) -> bool { self.debugging_opt(config::VERBOSE) } + pub fn time_passes(&self) -> bool { self.debugging_opt(config::TIME_PASSES) } + pub fn count_llvm_insns(&self) -> bool { + self.debugging_opt(config::COUNT_LLVM_INSNS) + } + pub fn count_type_sizes(&self) -> bool { + self.debugging_opt(config::COUNT_TYPE_SIZES) + } + pub fn time_llvm_passes(&self) -> bool { + self.debugging_opt(config::TIME_LLVM_PASSES) + } + pub fn trans_stats(&self) -> bool { self.debugging_opt(config::TRANS_STATS) } + pub fn meta_stats(&self) -> bool { self.debugging_opt(config::META_STATS) } + pub fn asm_comments(&self) -> bool { self.debugging_opt(config::ASM_COMMENTS) } + pub fn no_verify(&self) -> bool { self.debugging_opt(config::NO_VERIFY) } + pub fn borrowck_stats(&self) -> bool { self.debugging_opt(config::BORROWCK_STATS) } + pub fn print_llvm_passes(&self) -> bool { + self.debugging_opt(config::PRINT_LLVM_PASSES) + } + pub fn lto(&self) -> bool { + self.opts.cg.lto + } + pub fn no_landing_pads(&self) -> bool { + self.debugging_opt(config::NO_LANDING_PADS) + } + pub fn show_span(&self) -> bool { + self.debugging_opt(config::SHOW_SPAN) + } + pub fn sysroot<'a>(&'a self) -> &'a Path { + match self.opts.maybe_sysroot { + Some (ref sysroot) => sysroot, + None => self.default_sysroot.as_ref() + .expect("missing sysroot and default_sysroot in Session") + } + } + pub fn target_filesearch<'a>(&'a self) -> filesearch::FileSearch<'a> { + filesearch::FileSearch::new(self.sysroot(), + self.opts.target_triple.as_slice(), + &self.opts.addl_lib_search_paths) + } + pub fn host_filesearch<'a>(&'a self) -> filesearch::FileSearch<'a> { + filesearch::FileSearch::new( + self.sysroot(), + config::host_triple(), + &self.opts.addl_lib_search_paths) + } +} + +pub fn build_session(sopts: config::Options, + local_crate_source_file: Option<Path>, + registry: diagnostics::registry::Registry) + -> Session { + let codemap = codemap::CodeMap::new(); + let diagnostic_handler = + diagnostic::default_handler(sopts.color, Some(registry)); + let span_diagnostic_handler = + diagnostic::mk_span_handler(diagnostic_handler, codemap); + + build_session_(sopts, local_crate_source_file, span_diagnostic_handler) +} + +pub fn build_session_(sopts: config::Options, + local_crate_source_file: Option<Path>, + span_diagnostic: diagnostic::SpanHandler) + -> Session { + let target_cfg = config::build_target_config(&sopts, &span_diagnostic); + let p_s = parse::new_parse_sess_special_handler(span_diagnostic); + let default_sysroot = match sopts.maybe_sysroot { + Some(_) => None, + None => Some(filesearch::get_or_default_sysroot()) + }; + + // Make the path absolute, if necessary + let local_crate_source_file = local_crate_source_file.map(|path| + if path.is_absolute() { + path.clone() + } else { + os::getcwd().join(&path) + } + ); + + let sess = Session { + target: target_cfg, + opts: sopts, + cstore: CStore::new(token::get_ident_interner()), + parse_sess: p_s, + // For a library crate, this is always none + entry_fn: RefCell::new(None), + entry_type: Cell::new(None), + plugin_registrar_fn: Cell::new(None), + default_sysroot: default_sysroot, + local_crate_source_file: local_crate_source_file, + working_dir: os::getcwd(), + lint_store: RefCell::new(lint::LintStore::new()), + lints: RefCell::new(NodeMap::new()), + crate_types: RefCell::new(Vec::new()), + crate_metadata: RefCell::new(Vec::new()), + features: RefCell::new(feature_gate::Features::new()), + recursion_limit: Cell::new(64), + }; + + sess.lint_store.borrow_mut().register_builtin(Some(&sess)); + sess +} + +// Seems out of place, but it uses session, so I'm putting it here +pub fn expect<T>(sess: &Session, opt: Option<T>, msg: || -> String) -> T { + diagnostic::expect(sess.diagnostic(), opt, msg) +} + +pub fn early_error(msg: &str) -> ! { + let mut emitter = diagnostic::EmitterWriter::stderr(diagnostic::Auto, None); + emitter.emit(None, msg, None, diagnostic::Fatal); + panic!(diagnostic::FatalError); +} + +pub fn early_warn(msg: &str) { + let mut emitter = diagnostic::EmitterWriter::stderr(diagnostic::Auto, None); + emitter.emit(None, msg, None, diagnostic::Warning); +} + |