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Tweak some error message reports

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This commit is contained in:
Richard Feldman 2020-08-31 17:31:07 -04:00
parent e6cbfb1567
commit c611f1dfe8
2 changed files with 46 additions and 23 deletions
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23
compiler/reporting/src/error/type.rs
View file

@ -498,6 +498,14 @@ fn to_expr_report<'b>(
Reason::ElemInList { index } => {
let ith = index.ordinal();
// Don't say "the previous elements all have the type" if
// there was only 1 previous element!
let prev_elems_msg = if index.to_zero_based() == 1 {
"However, the 1st element has the type:"
} else {
"However, the preceding elements in the list all have the type:"
};
report_mismatch(
alloc,
filename,
@ -506,13 +514,10 @@ fn to_expr_report<'b>(
expected_type,
region,
Some(expr_region),
alloc.string(format!(
"The {} element of this list does not match all the previous elements:",
ith
)),
alloc.string(format!("The {} element is", ith)),
alloc.reflow("But all the previous elements in the list have type:"),
Some(alloc.reflow("I need all elements of a list to have the same type!")),
alloc.reflow("This list contains elements with different types:"),
alloc.string(format!("Its {} element is", ith)),
alloc.reflow(prev_elems_msg),
Some(alloc.reflow("I need every element in a list to have the same type!")),
)
}
Reason::RecordUpdateValue(field) => report_mismatch(
@ -2387,11 +2392,11 @@ fn type_problem_to_pretty<'b>(
}
}
IntFloat => alloc.tip().append(alloc.concat(vec![
alloc.reflow("Convert between "),
alloc.reflow("You can convert between "),
alloc.type_str("Int"),
alloc.reflow(" and "),
alloc.type_str("Float"),
alloc.reflow(" with "),
alloc.reflow(" using functions like "),
alloc.symbol_qualified(Symbol::NUM_TO_FLOAT),
alloc.reflow(" and "),
alloc.symbol_qualified(Symbol::NUM_ROUND),

46
compiler/reporting/src/report.rs
View file

@ -20,7 +20,12 @@ const CYCLE_LN: &str = ["| ", "│ "][!IS_WINDOWS as usize];
const CYCLE_MID: &str = ["| |", "│ ↓"][!IS_WINDOWS as usize];
const CYCLE_END: &str = ["+-<---+", "└─────┘"][!IS_WINDOWS as usize];
const GUTTER_BAR: &str = " ┆";
const GUTTER_BAR: &str = "│";
const UNDERLINE: &str = "▔";
/// The number of monospace spaces the gutter bar takes up.
/// (This is not necessarily the same as GUTTER_BAR.len()!)
const GUTTER_BAR_WIDTH: usize = 1;
pub fn cycle<'b>(
alloc: &'b RocDocAllocator<'b>,
@ -91,12 +96,15 @@ impl<'b> Report<'b> {
self.doc
} else {
let header = format!(
"-- {} {}",
"── {} {}",
self.title,
"-".repeat(80 - (self.title.len() + 4))
"─".repeat(80 - (self.title.len() + 4))
);
alloc.stack(vec![alloc.text(header), self.doc])
alloc.stack(vec![
alloc.text(header).annotate(Annotation::Header),
self.doc,
])
}
}
}
@ -110,6 +118,7 @@ pub struct Palette<'a> {
pub alias: &'a str,
pub error: &'a str,
pub line_number: &'a str,
pub header: &'a str,
pub gutter_bar: &'a str,
pub module_name: &'a str,
pub binop: &'a str,
@ -126,7 +135,8 @@ pub const DEFAULT_PALETTE: Palette = Palette {
alias: YELLOW_CODE,
error: RED_CODE,
line_number: CYAN_CODE,
gutter_bar: MAGENTA_CODE,
header: CYAN_CODE,
gutter_bar: CYAN_CODE,
module_name: GREEN_CODE,
binop: GREEN_CODE,
typo: YELLOW_CODE,
@ -390,13 +400,14 @@ impl<'a> RocDocAllocator<'a> {
let overlapping = sub_region2.start_col < sub_region1.end_col;
let highlight = if overlapping {
self.text("^".repeat((sub_region2.end_col - sub_region1.start_col) as usize))
self.text(UNDERLINE.repeat((sub_region2.end_col - sub_region1.start_col) as usize))
} else {
let highlight1 = "^".repeat((sub_region1.end_col - sub_region1.start_col) as usize);
let highlight1 =
UNDERLINE.repeat((sub_region1.end_col - sub_region1.start_col) as usize);
let highlight2 = if sub_region1 == sub_region2 {
"".repeat(0)
} else {
"^".repeat((sub_region2.end_col - sub_region2.start_col) as usize)
UNDERLINE.repeat((sub_region2.end_col - sub_region2.start_col) as usize)
};
let inbetween = " "
.repeat((sub_region2.start_col.saturating_sub(sub_region1.end_col)) as usize);
@ -408,8 +419,9 @@ impl<'a> RocDocAllocator<'a> {
let highlight_line = self
.line()
.append(self.text(" ".repeat(max_line_number_length)))
.append(self.text(GUTTER_BAR).annotate(Annotation::GutterBar))
// Omit the gutter bar when we know there are no further
// line numbers to be printed after this!
.append(self.text(" ".repeat(max_line_number_length + GUTTER_BAR_WIDTH)))
.append(if sub_region1.is_empty() && sub_region2.is_empty() {
self.nil()
} else {
@ -491,11 +503,13 @@ impl<'a> RocDocAllocator<'a> {
}
if error_highlight_line {
let highlight_text = "^".repeat((sub_region.end_col - sub_region.start_col) as usize);
let highlight_text =
UNDERLINE.repeat((sub_region.end_col - sub_region.start_col) as usize);
let highlight_line = self
.line()
.append(self.text(" ".repeat(max_line_number_length)))
.append(self.text(GUTTER_BAR).annotate(Annotation::GutterBar))
// Omit the gutter bar when we know there are no further
// line numbers to be printed after this!
.append(self.text(" ".repeat(max_line_number_length + GUTTER_BAR_WIDTH)))
.append(if highlight_text.is_empty() {
self.nil()
} else {
@ -577,6 +591,7 @@ pub enum Annotation {
Typo,
TypoSuggestion,
Tip,
Header,
}
/// Render with minimal formatting
@ -746,6 +761,9 @@ where
Error => {
self.write_str(self.palette.error)?;
}
Header => {
self.write_str(self.palette.header)?;
}
LineNumber => {
self.write_str(self.palette.line_number)?;
}
@ -775,7 +793,7 @@ where
Some(annotation) => match annotation {
Emphasized | Url | TypeVariable | Alias | Symbol | BinOp | Error | GutterBar
| Typo | TypoSuggestion | Structure | CodeBlock | PlainText | LineNumber | Tip
| Module => {
| Module | Header => {
self.write_str(RESET_CODE)?;
}