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use entity::SecondaryMap;
use ir;
use ir::entities::{AnyEntity, Inst, Value};
use ir::function::Function;
use isa::TargetIsa;
use result::CodegenError;
use std::boxed::Box;
use std::fmt;
use std::fmt::Write;
use std::string::{String, ToString};
use std::vec::Vec;
use verifier::{VerifierError, VerifierErrors};
use write::{decorate_function, FuncWriter, PlainWriter};
pub fn pretty_verifier_error<'a>(
func: &ir::Function,
isa: Option<&TargetIsa>,
func_w: Option<Box<FuncWriter + 'a>>,
errors: VerifierErrors,
) -> String {
let mut errors = errors.0;
let mut w = String::new();
decorate_function(
&mut PrettyVerifierError(func_w.unwrap_or_else(|| Box::new(PlainWriter)), &mut errors),
&mut w,
func,
isa,
).unwrap();
w
}
struct PrettyVerifierError<'a>(Box<FuncWriter + 'a>, &'a mut Vec<VerifierError>);
impl<'a> FuncWriter for PrettyVerifierError<'a> {
fn write_instruction(
&mut self,
w: &mut Write,
func: &Function,
aliases: &SecondaryMap<Value, Vec<Value>>,
isa: Option<&TargetIsa>,
inst: Inst,
indent: usize,
) -> fmt::Result {
pretty_instruction_error(w, func, aliases, isa, inst, indent, &mut *self.0, self.1)
}
fn write_entity_definition(
&mut self,
w: &mut Write,
func: &Function,
entity: AnyEntity,
value: &fmt::Display,
) -> fmt::Result {
pretty_preamble_error(w, func, entity, value, &mut *self.0, self.1)
}
}
fn pretty_instruction_error(
w: &mut Write,
func: &Function,
aliases: &SecondaryMap<Value, Vec<Value>>,
isa: Option<&TargetIsa>,
cur_inst: Inst,
indent: usize,
func_w: &mut FuncWriter,
errors: &mut Vec<VerifierError>,
) -> fmt::Result {
let mut i = 0;
let mut printed_instr = false;
while i != errors.len() {
match errors[i].location {
ir::entities::AnyEntity::Inst(inst) if inst == cur_inst => {
let err = errors.remove(i);
if !printed_instr {
func_w.write_instruction(w, func, aliases, isa, cur_inst, indent)?;
printed_instr = true;
}
print_error(w, indent, cur_inst.to_string(), err)?;
}
ir::entities::AnyEntity::Inst(_) => i += 1,
_ => unreachable!(),
}
}
if printed_instr {
w.write_char('\n')?;
} else {
writeln!(
w,
"{1:0$}{2}",
indent,
"",
func.dfg.display_inst(cur_inst, isa)
)?;
}
Ok(())
}
fn pretty_preamble_error(
w: &mut Write,
func: &Function,
entity: AnyEntity,
value: &fmt::Display,
func_w: &mut FuncWriter,
errors: &mut Vec<VerifierError>,
) -> fmt::Result {
let indent = 4;
let mut i = 0;
let mut printed_entity = false;
while i != errors.len() {
if entity == errors[i].location {
let err = errors.remove(i);
if !printed_entity {
func_w.write_entity_definition(w, func, entity, value)?;
printed_entity = true;
}
print_error(w, indent, entity.to_string(), err)?;
} else {
i += 1
}
}
if printed_entity {
w.write_char('\n')?;
} else {
func_w.write_entity_definition(w, func, entity, value)?;
}
Ok(())
}
fn print_error(w: &mut Write, indent: usize, s: String, err: VerifierError) -> fmt::Result {
let indent = if indent < 1 { 0 } else { indent - 1 };
write!(w, ";{1:0$}^", indent, "")?;
for _c in s.chars() {
write!(w, "~")?;
}
writeln!(w, " verifier {}", err.to_string())?;
Ok(())
}
pub fn pretty_error(func: &ir::Function, isa: Option<&TargetIsa>, err: CodegenError) -> String {
if let CodegenError::Verifier(e) = err {
pretty_verifier_error(func, isa, None, e)
} else {
err.to_string()
}
}