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pub use self::EntryFnType::*;
pub use self::CrateType::*;
pub use self::Passes::*;
pub use self::OptLevel::*;
pub use self::OutputType::*;
pub use self::DebugInfoLevel::*;
use session::{early_error, early_warn, Session};
use session::search_paths::SearchPaths;
use rustc_back::target::Target;
use lint;
use metadata::cstore;
use syntax::ast;
use syntax::ast::{IntTy, UintTy};
use syntax::attr;
use syntax::attr::AttrMetaMethods;
use syntax::diagnostic::{ColorConfig, Auto, Always, Never, SpanHandler};
use syntax::parse;
use syntax::parse::token::InternedString;
use getopts;
use std::collections::HashMap;
use std::env;
use std::fmt;
use std::path::PathBuf;
use llvm;
pub struct Config {
pub target: Target,
pub int_type: IntTy,
pub uint_type: UintTy,
}
#[derive(Clone, Copy, PartialEq)]
pub enum OptLevel {
No,
Less,
Default,
Aggressive
}
#[derive(Clone, Copy, PartialEq)]
pub enum DebugInfoLevel {
NoDebugInfo,
LimitedDebugInfo,
FullDebugInfo,
}
#[derive(Clone, Copy, PartialEq, PartialOrd, Ord, Eq)]
pub enum OutputType {
OutputTypeBitcode,
OutputTypeAssembly,
OutputTypeLlvmAssembly,
OutputTypeObject,
OutputTypeExe,
OutputTypeDepInfo,
}
#[derive(Clone)]
pub struct Options {
pub crate_types: Vec<CrateType>,
pub gc: bool,
pub optimize: OptLevel,
pub debug_assertions: bool,
pub debuginfo: DebugInfoLevel,
pub lint_opts: Vec<(String, lint::Level)>,
pub describe_lints: bool,
pub output_types: Vec<OutputType>,
pub search_paths: SearchPaths,
pub libs: Vec<(String, cstore::NativeLibraryKind)>,
pub maybe_sysroot: Option<PathBuf>,
pub target_triple: String,
pub cfg: ast::CrateConfig,
pub test: bool,
pub parse_only: bool,
pub no_trans: bool,
pub treat_err_as_bug: bool,
pub no_analysis: bool,
pub debugging_opts: DebuggingOptions,
pub write_dependency_info: (bool, Option<PathBuf>),
pub prints: Vec<PrintRequest>,
pub cg: CodegenOptions,
pub color: ColorConfig,
pub show_span: Option<String>,
pub externs: HashMap<String, Vec<String>>,
pub crate_name: Option<String>,
pub alt_std_name: Option<String>,
pub unstable_features: UnstableFeatures
}
#[derive(Clone, Copy)]
pub enum UnstableFeatures {
Disallow,
Default,
Cheat
}
#[derive(Clone, PartialEq, Eq)]
pub enum PrintRequest {
FileNames,
Sysroot,
CrateName,
}
pub enum Input {
File(PathBuf),
Str(String)
}
impl Input {
pub fn filestem(&self) -> String {
match *self {
Input::File(ref ifile) => ifile.file_stem().unwrap()
.to_str().unwrap().to_string(),
Input::Str(_) => "rust_out".to_string(),
}
}
}
#[derive(Clone)]
pub struct OutputFilenames {
pub out_directory: PathBuf,
pub out_filestem: String,
pub single_output_file: Option<PathBuf>,
pub extra: String,
}
impl OutputFilenames {
pub fn path(&self, flavor: OutputType) -> PathBuf {
match self.single_output_file {
Some(ref path) => return path.clone(),
None => {}
}
self.temp_path(flavor)
}
pub fn temp_path(&self, flavor: OutputType) -> PathBuf {
let base = self.out_directory.join(&self.filestem());
match flavor {
OutputTypeBitcode => base.with_extension("bc"),
OutputTypeAssembly => base.with_extension("s"),
OutputTypeLlvmAssembly => base.with_extension("ll"),
OutputTypeObject => base.with_extension("o"),
OutputTypeDepInfo => base.with_extension("d"),
OutputTypeExe => base,
}
}
pub fn with_extension(&self, extension: &str) -> PathBuf {
self.out_directory.join(&self.filestem()).with_extension(extension)
}
pub fn filestem(&self) -> String {
format!("{}{}", self.out_filestem, self.extra)
}
}
pub fn host_triple() -> &'static str {
(option_env!("CFG_COMPILER_HOST_TRIPLE")).
expect("CFG_COMPILER_HOST_TRIPLE")
}
pub fn basic_options() -> Options {
Options {
crate_types: Vec::new(),
gc: false,
optimize: No,
debuginfo: NoDebugInfo,
lint_opts: Vec::new(),
describe_lints: false,
output_types: Vec::new(),
search_paths: SearchPaths::new(),
maybe_sysroot: None,
target_triple: host_triple().to_string(),
cfg: Vec::new(),
test: false,
parse_only: false,
no_trans: false,
treat_err_as_bug: false,
no_analysis: false,
debugging_opts: basic_debugging_options(),
write_dependency_info: (false, None),
prints: Vec::new(),
cg: basic_codegen_options(),
color: Auto,
show_span: None,
externs: HashMap::new(),
crate_name: None,
alt_std_name: None,
libs: Vec::new(),
unstable_features: UnstableFeatures::Disallow,
debug_assertions: true,
}
}
#[derive(Copy, Clone, PartialEq)]
pub enum EntryFnType {
EntryMain,
EntryStart,
EntryNone,
}
#[derive(Copy, PartialEq, PartialOrd, Clone, Ord, Eq, Hash, Debug)]
pub enum CrateType {
CrateTypeExecutable,
CrateTypeDylib,
CrateTypeRlib,
CrateTypeStaticlib,
}
#[derive(Clone)]
pub enum Passes {
SomePasses(Vec<String>),
AllPasses,
}
impl Passes {
pub fn is_empty(&self) -> bool {
match *self {
SomePasses(ref v) => v.is_empty(),
AllPasses => false,
}
}
}
macro_rules! options {
($struct_name:ident, $setter_name:ident, $defaultfn:ident,
$buildfn:ident, $prefix:expr, $outputname:expr,
$stat:ident, $mod_desc:ident, $mod_set:ident,
$($opt:ident : $t:ty = ($init:expr, $parse:ident, $desc:expr)),* ,) =>
(
#[derive(Clone)]
pub struct $struct_name { $(pub $opt: $t),* }
pub fn $defaultfn() -> $struct_name {
$struct_name { $($opt: $init),* }
}
pub fn $buildfn(matches: &getopts::Matches) -> $struct_name
{
let mut op = $defaultfn();
for option in matches.opt_strs($prefix) {
let mut iter = option.splitn(2, '=');
let key = iter.next().unwrap();
let value = iter.next();
let option_to_lookup = key.replace("-", "_");
let mut found = false;
for &(candidate, setter, opt_type_desc, _) in $stat {
if option_to_lookup != candidate { continue }
if !setter(&mut op, value) {
match (value, opt_type_desc) {
(Some(..), None) => {
early_error(&format!("{} option `{}` takes no \
value", $outputname, key))
}
(None, Some(type_desc)) => {
early_error(&format!("{0} option `{1}` requires \
{2} ({3} {1}=<value>)",
$outputname, key,
type_desc, $prefix))
}
(Some(value), Some(type_desc)) => {
early_error(&format!("incorrect value `{}` for {} \
option `{}` - {} was expected",
value, $outputname,
key, type_desc))
}
(None, None) => unreachable!()
}
}
found = true;
break;
}
if !found {
early_error(&format!("unknown {} option: `{}`",
$outputname, key));
}
}
return op;
}
pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool;
pub const $stat: &'static [(&'static str, $setter_name,
Option<&'static str>, &'static str)] =
&[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ];
#[allow(non_upper_case_globals, dead_code)]
mod $mod_desc {
pub const parse_bool: Option<&'static str> = None;
pub const parse_opt_bool: Option<&'static str> =
Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`");
pub const parse_string: Option<&'static str> = Some("a string");
pub const parse_opt_string: Option<&'static str> = Some("a string");
pub const parse_list: Option<&'static str> = Some("a space-separated list of strings");
pub const parse_opt_list: Option<&'static str> = Some("a space-separated list of strings");
pub const parse_uint: Option<&'static str> = Some("a number");
pub const parse_passes: Option<&'static str> =
Some("a space-separated list of passes, or `all`");
pub const parse_opt_uint: Option<&'static str> =
Some("a number");
}
#[allow(dead_code)]
mod $mod_set {
use super::{$struct_name, Passes, SomePasses, AllPasses};
$(
pub fn $opt(cg: &mut $struct_name, v: Option<&str>) -> bool {
$parse(&mut cg.$opt, v)
}
)*
fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
match v {
Some(..) => false,
None => { *slot = true; true }
}
}
fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
match v {
Some(s) => {
match s {
"n" | "no" | "off" => {
*slot = Some(false);
}
"y" | "yes" | "on" => {
*slot = Some(true);
}
_ => { return false; }
}
true
},
None => { *slot = Some(true); true }
}
}
fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = Some(s.to_string()); true },
None => false,
}
}
fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = s.to_string(); true },
None => false,
}
}
fn parse_list(slot: &mut Vec<String>, v: Option<&str>)
-> bool {
match v {
Some(s) => {
for s in s.words() {
slot.push(s.to_string());
}
true
},
None => false,
}
}
fn parse_opt_list(slot: &mut Option<Vec<String>>, v: Option<&str>)
-> bool {
match v {
Some(s) => {
let v = s.words().map(|s| s.to_string()).collect();
*slot = Some(v);
true
},
None => false,
}
}
fn parse_uint(slot: &mut usize, v: Option<&str>) -> bool {
match v.and_then(|s| s.parse().ok()) {
Some(i) => { *slot = i; true },
None => false
}
}
fn parse_opt_uint(slot: &mut Option<usize>, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = s.parse().ok(); slot.is_some() }
None => { *slot = None; true }
}
}
fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
match v {
Some("all") => {
*slot = AllPasses;
true
}
v => {
let mut passes = vec!();
if parse_list(&mut passes, v) {
*slot = SomePasses(passes);
true
} else {
false
}
}
}
}
}
) }
options! {CodegenOptions, CodegenSetter, basic_codegen_options,
build_codegen_options, "C", "codegen",
CG_OPTIONS, cg_type_desc, cgsetters,
ar: Option<String> = (None, parse_opt_string,
"tool to assemble archives with"),
linker: Option<String> = (None, parse_opt_string,
"system linker to link outputs with"),
link_args: Option<Vec<String>> = (None, parse_opt_list,
"extra arguments to pass to the linker (space separated)"),
lto: bool = (false, parse_bool,
"perform LLVM link-time optimizations"),
target_cpu: Option<String> = (None, parse_opt_string,
"select target processor (llc -mcpu=help for details)"),
target_feature: String = ("".to_string(), parse_string,
"target specific attributes (llc -mattr=help for details)"),
passes: Vec<String> = (Vec::new(), parse_list,
"a list of extra LLVM passes to run (space separated)"),
llvm_args: Vec<String> = (Vec::new(), parse_list,
"a list of arguments to pass to llvm (space separated)"),
save_temps: bool = (false, parse_bool,
"save all temporary output files during compilation"),
rpath: bool = (false, parse_bool,
"set rpath values in libs/exes"),
no_prepopulate_passes: bool = (false, parse_bool,
"don't pre-populate the pass manager with a list of passes"),
no_vectorize_loops: bool = (false, parse_bool,
"don't run the loop vectorization optimization passes"),
no_vectorize_slp: bool = (false, parse_bool,
"don't run LLVM's SLP vectorization pass"),
soft_float: bool = (false, parse_bool,
"generate software floating point library calls"),
prefer_dynamic: bool = (false, parse_bool,
"prefer dynamic linking to static linking"),
no_integrated_as: bool = (false, parse_bool,
"use an external assembler rather than LLVM's integrated one"),
no_redzone: Option<bool> = (None, parse_opt_bool,
"disable the use of the redzone"),
relocation_model: Option<String> = (None, parse_opt_string,
"choose the relocation model to use (llc -relocation-model for details)"),
code_model: Option<String> = (None, parse_opt_string,
"choose the code model to use (llc -code-model for details)"),
metadata: Vec<String> = (Vec::new(), parse_list,
"metadata to mangle symbol names with"),
extra_filename: String = ("".to_string(), parse_string,
"extra data to put in each output filename"),
codegen_units: usize = (1, parse_uint,
"divide crate into N units to optimize in parallel"),
remark: Passes = (SomePasses(Vec::new()), parse_passes,
"print remarks for these optimization passes (space separated, or \"all\")"),
no_stack_check: bool = (false, parse_bool,
"disable checks for stack exhaustion (a memory-safety hazard!)"),
debuginfo: Option<usize> = (None, parse_opt_uint,
"debug info emission level, 0 = no debug info, 1 = line tables only, \
2 = full debug info with variable and type information"),
opt_level: Option<usize> = (None, parse_opt_uint,
"Optimize with possible levels 0-3"),
debug_assertions: Option<bool> = (None, parse_opt_bool,
"explicitly enable the cfg(debug_assertions) directive"),
}
options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
build_debugging_options, "Z", "debugging",
DB_OPTIONS, db_type_desc, dbsetters,
verbose: bool = (false, parse_bool,
"in general, enable more debug printouts"),
time_passes: bool = (false, parse_bool,
"measure time of each rustc pass"),
count_llvm_insns: bool = (false, parse_bool,
"count where LLVM instrs originate"),
time_llvm_passes: bool = (false, parse_bool,
"measure time of each LLVM pass"),
trans_stats: bool = (false, parse_bool,
"gather trans statistics"),
asm_comments: bool = (false, parse_bool,
"generate comments into the assembly (may change behavior)"),
no_verify: bool = (false, parse_bool,
"skip LLVM verification"),
borrowck_stats: bool = (false, parse_bool,
"gather borrowck statistics"),
no_landing_pads: bool = (false, parse_bool,
"omit landing pads for unwinding"),
debug_llvm: bool = (false, parse_bool,
"enable debug output from LLVM"),
count_type_sizes: bool = (false, parse_bool,
"count the sizes of aggregate types"),
meta_stats: bool = (false, parse_bool,
"gather metadata statistics"),
print_link_args: bool = (false, parse_bool,
"Print the arguments passed to the linker"),
gc: bool = (false, parse_bool,
"Garbage collect shared data (experimental)"),
print_llvm_passes: bool = (false, parse_bool,
"Prints the llvm optimization passes being run"),
ast_json: bool = (false, parse_bool,
"Print the AST as JSON and halt"),
ast_json_noexpand: bool = (false, parse_bool,
"Print the pre-expansion AST as JSON and halt"),
ls: bool = (false, parse_bool,
"List the symbols defined by a library crate"),
save_analysis: bool = (false, parse_bool,
"Write syntax and type analysis information in addition to normal output"),
print_move_fragments: bool = (false, parse_bool,
"Print out move-fragment data for every fn"),
flowgraph_print_loans: bool = (false, parse_bool,
"Include loan analysis data in --pretty flowgraph output"),
flowgraph_print_moves: bool = (false, parse_bool,
"Include move analysis data in --pretty flowgraph output"),
flowgraph_print_assigns: bool = (false, parse_bool,
"Include assignment analysis data in --pretty flowgraph output"),
flowgraph_print_all: bool = (false, parse_bool,
"Include all dataflow analysis data in --pretty flowgraph output"),
print_region_graph: bool = (false, parse_bool,
"Prints region inference graph. \
Use with RUST_REGION_GRAPH=help for more info"),
parse_only: bool = (false, parse_bool,
"Parse only; do not compile, assemble, or link"),
no_trans: bool = (false, parse_bool,
"Run all passes except translation; no output"),
treat_err_as_bug: bool = (false, parse_bool,
"Treat all errors that occur as bugs"),
no_analysis: bool = (false, parse_bool,
"Parse and expand the source, but run no analysis"),
extra_plugins: Vec<String> = (Vec::new(), parse_list,
"load extra plugins"),
unstable_options: bool = (false, parse_bool,
"Adds unstable command line options to rustc interface"),
print_enum_sizes: bool = (false, parse_bool,
"Print the size of enums and their variants"),
force_overflow_checks: Option<bool> = (None, parse_opt_bool,
"Force overflow checks on or off"),
force_dropflag_checks: Option<bool> = (None, parse_opt_bool,
"Force drop flag checks on or off"),
}
pub fn default_lib_output() -> CrateType {
CrateTypeRlib
}
pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
use syntax::parse::token::intern_and_get_ident as intern;
let end = &sess.target.target.target_endian;
let arch = &sess.target.target.arch;
let wordsz = &sess.target.target.target_pointer_width;
let os = &sess.target.target.target_os;
let fam = match sess.target.target.options.is_like_windows {
true => InternedString::new("windows"),
false => InternedString::new("unix")
};
let mk = attr::mk_name_value_item_str;
let mut ret = vec![
attr::mk_word_item(fam.clone()),
mk(InternedString::new("target_os"), intern(os)),
mk(InternedString::new("target_family"), fam),
mk(InternedString::new("target_arch"), intern(arch)),
mk(InternedString::new("target_endian"), intern(end)),
mk(InternedString::new("target_pointer_width"),
intern(wordsz))
];
if sess.opts.debug_assertions {
ret.push(attr::mk_word_item(InternedString::new("debug_assertions")));
}
return ret;
}
pub fn append_configuration(cfg: &mut ast::CrateConfig,
name: InternedString) {
if !cfg.iter().any(|mi| mi.name() == name) {
cfg.push(attr::mk_word_item(name))
}
}
pub fn build_configuration(sess: &Session) -> ast::CrateConfig {
let default_cfg = default_configuration(sess);
let mut user_cfg = sess.opts.cfg.clone();
if sess.opts.test {
append_configuration(&mut user_cfg, InternedString::new("test"))
}
let mut v = user_cfg.into_iter().collect::<Vec<_>>();
v.push_all(&default_cfg[..]);
v
}
pub fn build_target_config(opts: &Options, sp: &SpanHandler) -> Config {
let target = match Target::search(&opts.target_triple) {
Ok(t) => t,
Err(e) => {
sp.handler().fatal(&format!("Error loading target specification: {}", e));
}
};
let (int_type, uint_type) = match &target.target_pointer_width[..] {
"32" => (ast::TyI32, ast::TyU32),
"64" => (ast::TyI64, ast::TyU64),
w => sp.handler().fatal(&format!("target specification was invalid: unrecognized \
target-pointer-width {}", w))
};
Config {
target: target,
int_type: int_type,
uint_type: uint_type,
}
}
pub fn short_optgroups() -> Vec<getopts::OptGroup> {
rustc_short_optgroups().into_iter()
.filter(|g|g.is_stable())
.map(|g|g.opt_group)
.collect()
}
pub fn optgroups() -> Vec<getopts::OptGroup> {
rustc_optgroups().into_iter()
.filter(|g|g.is_stable())
.map(|g|g.opt_group)
.collect()
}
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
pub enum OptionStability { Stable, Unstable }
#[derive(Clone, PartialEq, Eq)]
pub struct RustcOptGroup {
pub opt_group: getopts::OptGroup,
pub stability: OptionStability,
}
impl RustcOptGroup {
pub fn is_stable(&self) -> bool {
self.stability == OptionStability::Stable
}
fn stable(g: getopts::OptGroup) -> RustcOptGroup {
RustcOptGroup { opt_group: g, stability: OptionStability::Stable }
}
fn unstable(g: getopts::OptGroup) -> RustcOptGroup {
RustcOptGroup { opt_group: g, stability: OptionStability::Unstable }
}
}
mod opt {
#![allow(dead_code)]
use getopts;
use super::RustcOptGroup;
pub type R = RustcOptGroup;
pub type S<'a> = &'a str;
fn stable(g: getopts::OptGroup) -> R { RustcOptGroup::stable(g) }
fn unstable(g: getopts::OptGroup) -> R { RustcOptGroup::unstable(g) }
pub fn opt(a: S, b: S, c: S, d: S) -> R { stable(getopts::optopt(a, b, c, d)) }
pub fn multi(a: S, b: S, c: S, d: S) -> R { stable(getopts::optmulti(a, b, c, d)) }
pub fn flag(a: S, b: S, c: S) -> R { stable(getopts::optflag(a, b, c)) }
pub fn flagopt(a: S, b: S, c: S, d: S) -> R { stable(getopts::optflagopt(a, b, c, d)) }
pub fn opt_u(a: S, b: S, c: S, d: S) -> R { unstable(getopts::optopt(a, b, c, d)) }
pub fn multi_u(a: S, b: S, c: S, d: S) -> R { unstable(getopts::optmulti(a, b, c, d)) }
pub fn flag_u(a: S, b: S, c: S) -> R { unstable(getopts::optflag(a, b, c)) }
pub fn flagopt_u(a: S, b: S, c: S, d: S) -> R { unstable(getopts::optflagopt(a, b, c, d)) }
}
pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
vec![
opt::flag("h", "help", "Display this message"),
opt::multi("", "cfg", "Configure the compilation environment", "SPEC"),
opt::multi("L", "", "Add a directory to the library search path",
"[KIND=]PATH"),
opt::multi("l", "", "Link the generated crate(s) to the specified native
library NAME. The optional KIND can be one of,
static, dylib, or framework. If omitted, dylib is
assumed.", "[KIND=]NAME"),
opt::multi("", "crate-type", "Comma separated list of types of crates
for the compiler to emit",
"[bin|lib|rlib|dylib|staticlib]"),
opt::opt("", "crate-name", "Specify the name of the crate being built",
"NAME"),
opt::multi("", "emit", "Comma separated list of types of output for \
the compiler to emit",
"[asm|llvm-bc|llvm-ir|obj|link|dep-info]"),
opt::multi("", "print", "Comma separated list of compiler information to \
print on stdout",
"[crate-name|file-names|sysroot]"),
opt::flag("g", "", "Equivalent to -C debuginfo=2"),
opt::flag("O", "", "Equivalent to -C opt-level=2"),
opt::opt("o", "", "Write output to <filename>", "FILENAME"),
opt::opt("", "out-dir", "Write output to compiler-chosen filename \
in <dir>", "DIR"),
opt::opt("", "explain", "Provide a detailed explanation of an error \
message", "OPT"),
opt::flag("", "test", "Build a test harness"),
opt::opt("", "target", "Target triple cpu-manufacturer-kernel[-os] \
to compile for (see chapter 3.4 of \
http://www.sourceware.org/autobook/
for details)",
"TRIPLE"),
opt::multi("W", "warn", "Set lint warnings", "OPT"),
opt::multi("A", "allow", "Set lint allowed", "OPT"),
opt::multi("D", "deny", "Set lint denied", "OPT"),
opt::multi("F", "forbid", "Set lint forbidden", "OPT"),
opt::multi("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
opt::flag("V", "version", "Print version info and exit"),
opt::flag("v", "verbose", "Use verbose output"),
]
}
pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
let mut opts = rustc_short_optgroups();
opts.push_all(&[
opt::multi("", "extern", "Specify where an external rust library is \
located",
"NAME=PATH"),
opt::opt("", "sysroot", "Override the system root", "PATH"),
opt::multi("Z", "", "Set internal debugging options", "FLAG"),
opt::opt("", "color", "Configure coloring of output:
auto = colorize, if output goes to a tty (default);
always = always colorize output;
never = never colorize output", "auto|always|never"),
opt::flagopt_u("", "pretty",
"Pretty-print the input instead of compiling;
valid types are: `normal` (un-annotated source),
`expanded` (crates expanded),
`typed` (crates expanded, with type annotations), or
`expanded,identified` (fully parenthesized, AST nodes with IDs).",
"TYPE"),
opt::flagopt_u("", "xpretty",
"Pretty-print the input instead of compiling, unstable variants;
valid types are any of the types for `--pretty`, as well as:
`flowgraph=<nodeid>` (graphviz formatted flowgraph for node), or
`everybody_loops` (all function bodies replaced with `loop {}`).",
"TYPE"),
opt::opt_u("", "show-span", "Show spans for compiler debugging", "expr|pat|ty"),
]);
opts
}
pub fn parse_cfgspecs(cfgspecs: Vec<String> ) -> ast::CrateConfig {
cfgspecs.into_iter().map(|s| {
parse::parse_meta_from_source_str("cfgspec".to_string(),
s.to_string(),
Vec::new(),
&parse::new_parse_sess())
}).collect::<ast::CrateConfig>()
}
pub fn build_session_options(matches: &getopts::Matches) -> Options {
let unparsed_crate_types = matches.opt_strs("crate-type");
let crate_types = parse_crate_types_from_list(unparsed_crate_types)
.unwrap_or_else(|e| early_error(&e[..]));
let mut lint_opts = vec!();
let mut describe_lints = false;
for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
for lint_name in matches.opt_strs(level.as_str()) {
if lint_name == "help" {
describe_lints = true;
} else {
lint_opts.push((lint_name.replace("-", "_"), level));
}
}
}
let debugging_opts = build_debugging_options(matches);
let parse_only = debugging_opts.parse_only;
let no_trans = debugging_opts.no_trans;
let treat_err_as_bug = debugging_opts.treat_err_as_bug;
let no_analysis = debugging_opts.no_analysis;
if debugging_opts.debug_llvm {
unsafe { llvm::LLVMSetDebug(1); }
}
let mut output_types = Vec::new();
if !debugging_opts.parse_only && !no_trans {
let unparsed_output_types = matches.opt_strs("emit");
for unparsed_output_type in &unparsed_output_types {
for part in unparsed_output_type.split(',') {
let output_type = match part {
"asm" => OutputTypeAssembly,
"llvm-ir" => OutputTypeLlvmAssembly,
"llvm-bc" => OutputTypeBitcode,
"obj" => OutputTypeObject,
"link" => OutputTypeExe,
"dep-info" => OutputTypeDepInfo,
_ => {
early_error(&format!("unknown emission type: `{}`",
part))
}
};
output_types.push(output_type)
}
}
};
output_types.sort();
output_types.dedup();
if output_types.is_empty() {
output_types.push(OutputTypeExe);
}
let cg = build_codegen_options(matches);
let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
let target = matches.opt_str("target").unwrap_or(
host_triple().to_string());
let opt_level = {
if matches.opt_present("O") {
if cg.opt_level.is_some() {
early_error("-O and -C opt-level both provided");
}
Default
} else {
match cg.opt_level {
None => No,
Some(0) => No,
Some(1) => Less,
Some(2) => Default,
Some(3) => Aggressive,
Some(arg) => {
early_error(&format!("optimization level needs to be \
between 0-3 (instead was `{}`)",
arg));
}
}
}
};
let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == No);
let gc = debugging_opts.gc;
let debuginfo = if matches.opt_present("g") {
if cg.debuginfo.is_some() {
early_error("-g and -C debuginfo both provided");
}
FullDebugInfo
} else {
match cg.debuginfo {
None | Some(0) => NoDebugInfo,
Some(1) => LimitedDebugInfo,
Some(2) => FullDebugInfo,
Some(arg) => {
early_error(&format!("debug info level needs to be between \
0-2 (instead was `{}`)",
arg));
}
}
};
let mut search_paths = SearchPaths::new();
for s in &matches.opt_strs("L") {
search_paths.add_path(&s[..]);
}
let libs = matches.opt_strs("l").into_iter().map(|s| {
let mut parts = s.splitn(2, '=');
let kind = parts.next().unwrap();
let (name, kind) = match (parts.next(), kind) {
(None, name) |
(Some(name), "dylib") => (name, cstore::NativeUnknown),
(Some(name), "framework") => (name, cstore::NativeFramework),
(Some(name), "static") => (name, cstore::NativeStatic),
(_, s) => {
early_error(&format!("unknown library kind `{}`, expected \
one of dylib, framework, or static",
s));
}
};
(name.to_string(), kind)
}).collect();
let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
let test = matches.opt_present("test");
let write_dependency_info = (output_types.contains(&OutputTypeDepInfo), None);
let prints = matches.opt_strs("print").into_iter().map(|s| {
match &*s {
"crate-name" => PrintRequest::CrateName,
"file-names" => PrintRequest::FileNames,
"sysroot" => PrintRequest::Sysroot,
req => {
early_error(&format!("unknown print request `{}`", req))
}
}
}).collect::<Vec<_>>();
if !cg.remark.is_empty() && debuginfo == NoDebugInfo {
early_warn("-C remark will not show source locations without \
--debuginfo");
}
let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
Some("auto") => Auto,
Some("always") => Always,
Some("never") => Never,
None => Auto,
Some(arg) => {
early_error(&format!("argument for --color must be auto, always \
or never (instead was `{}`)",
arg))
}
};
let mut externs = HashMap::new();
for arg in &matches.opt_strs("extern") {
let mut parts = arg.splitn(2, '=');
let name = match parts.next() {
Some(s) => s,
None => early_error("--extern value must not be empty"),
};
let location = match parts.next() {
Some(s) => s,
None => early_error("--extern value must be of the format `foo=bar`"),
};
externs.entry(name.to_string()).or_insert(vec![]).push(location.to_string());
}
let crate_name = matches.opt_str("crate-name");
Options {
crate_types: crate_types,
gc: gc,
optimize: opt_level,
debuginfo: debuginfo,
lint_opts: lint_opts,
describe_lints: describe_lints,
output_types: output_types,
search_paths: search_paths,
maybe_sysroot: sysroot_opt,
target_triple: target,
cfg: cfg,
test: test,
parse_only: parse_only,
no_trans: no_trans,
treat_err_as_bug: treat_err_as_bug,
no_analysis: no_analysis,
debugging_opts: debugging_opts,
write_dependency_info: write_dependency_info,
prints: prints,
cg: cg,
color: color,
show_span: None,
externs: externs,
crate_name: crate_name,
alt_std_name: None,
libs: libs,
unstable_features: get_unstable_features_setting(),
debug_assertions: debug_assertions,
}
}
pub fn get_unstable_features_setting() -> UnstableFeatures {
let disable_unstable_features = option_env!("CFG_DISABLE_UNSTABLE_FEATURES").is_some();
let bootstrap_secret_key = option_env!("CFG_BOOTSTRAP_KEY");
let bootstrap_provided_key = env::var("RUSTC_BOOTSTRAP_KEY").ok();
match (disable_unstable_features, bootstrap_secret_key, bootstrap_provided_key) {
(_, Some(ref s), Some(ref p)) if s == p => UnstableFeatures::Cheat,
(true, _, _) => UnstableFeatures::Disallow,
(false, _, _) => UnstableFeatures::Default
}
}
pub fn parse_crate_types_from_list(list_list: Vec<String>) -> Result<Vec<CrateType>, String> {
let mut crate_types: Vec<CrateType> = Vec::new();
for unparsed_crate_type in &list_list {
for part in unparsed_crate_type.split(',') {
let new_part = match part {
"lib" => default_lib_output(),
"rlib" => CrateTypeRlib,
"staticlib" => CrateTypeStaticlib,
"dylib" => CrateTypeDylib,
"bin" => CrateTypeExecutable,
_ => {
return Err(format!("unknown crate type: `{}`",
part));
}
};
if !crate_types.contains(&new_part) {
crate_types.push(new_part)
}
}
}
return Ok(crate_types);
}
impl fmt::Display for CrateType {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
CrateTypeExecutable => "bin".fmt(f),
CrateTypeDylib => "dylib".fmt(f),
CrateTypeRlib => "rlib".fmt(f),
CrateTypeStaticlib => "staticlib".fmt(f)
}
}
}
#[cfg(test)]
mod test {
use session::config::{build_configuration, optgroups, build_session_options};
use session::build_session;
use getopts::getopts;
use syntax::attr;
use syntax::attr::AttrMetaMethods;
use syntax::diagnostics;
#[test]
fn test_switch_implies_cfg_test() {
let matches =
&match getopts(&["--test".to_string()], &optgroups()) {
Ok(m) => m,
Err(f) => panic!("test_switch_implies_cfg_test: {}", f)
};
let registry = diagnostics::registry::Registry::new(&[]);
let sessopts = build_session_options(matches);
let sess = build_session(sessopts, None, registry);
let cfg = build_configuration(&sess);
assert!((attr::contains_name(&cfg[..], "test")));
}
#[test]
fn test_switch_implies_cfg_test_unless_cfg_test() {
let matches =
&match getopts(&["--test".to_string(), "--cfg=test".to_string()],
&optgroups()) {
Ok(m) => m,
Err(f) => {
panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f)
}
};
let registry = diagnostics::registry::Registry::new(&[]);
let sessopts = build_session_options(matches);
let sess = build_session(sessopts, None, registry);
let cfg = build_configuration(&sess);
let mut test_items = cfg.iter().filter(|m| m.name() == "test");
assert!(test_items.next().is_some());
assert!(test_items.next().is_none());
}
#[test]
fn test_can_print_warnings() {
{
let matches = getopts(&[
"-Awarnings".to_string()
], &optgroups()).unwrap();
let registry = diagnostics::registry::Registry::new(&[]);
let sessopts = build_session_options(&matches);
let sess = build_session(sessopts, None, registry);
assert!(!sess.can_print_warnings);
}
{
let matches = getopts(&[
"-Awarnings".to_string(),
"-Dwarnings".to_string()
], &optgroups()).unwrap();
let registry = diagnostics::registry::Registry::new(&[]);
let sessopts = build_session_options(&matches);
let sess = build_session(sessopts, None, registry);
assert!(sess.can_print_warnings);
}
{
let matches = getopts(&[
"-Adead_code".to_string()
], &optgroups()).unwrap();
let registry = diagnostics::registry::Registry::new(&[]);
let sessopts = build_session_options(&matches);
let sess = build_session(sessopts, None, registry);
assert!(sess.can_print_warnings);
}
}
}