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