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Test parsing and recovery of all sorts of range patterns.
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‎src/test/ui/parser/recover-range-pats.rs

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// Here we test all kinds of range patterns in terms of parsing / recovery.
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// We want to ensure that:
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// 1. Things parse as they should.
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// 2. Or at least we have parser recovery if they don't.
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#![feature(exclusive_range_pattern)]
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#![deny(ellipsis_inclusive_range_patterns)]
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fn main() {}
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const X: u8 = 0;
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const Y: u8 = 3;
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fn exclusive_from_to() {
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if let 0..3 = 0 {} // OK.
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if let 0..Y = 0 {} // OK.
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if let X..3 = 0 {} // OK.
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if let X..Y = 0 {} // OK.
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if let true..Y = 0 {} //~ ERROR only char and numeric types
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if let X..true = 0 {} //~ ERROR only char and numeric types
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if let .0..Y = 0 {} //~ ERROR mismatched types
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//~^ ERROR float literals must have an integer part
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if let X.. .0 = 0 {} //~ ERROR mismatched types
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//~^ ERROR float literals must have an integer part
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}
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fn inclusive_from_to() {
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if let 0..=3 = 0 {} // OK.
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if let 0..=Y = 0 {} // OK.
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if let X..=3 = 0 {} // OK.
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if let X..=Y = 0 {} // OK.
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if let true..=Y = 0 {} //~ ERROR only char and numeric types
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if let X..=true = 0 {} //~ ERROR only char and numeric types
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if let .0..=Y = 0 {} //~ ERROR mismatched types
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//~^ ERROR float literals must have an integer part
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if let X..=.0 = 0 {} //~ ERROR mismatched types
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//~^ ERROR float literals must have an integer part
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}
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fn inclusive2_from_to() {
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if let 0...3 = 0 {} //~ ERROR `...` range patterns are deprecated
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if let 0...Y = 0 {} //~ ERROR `...` range patterns are deprecated
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if let X...3 = 0 {} //~ ERROR `...` range patterns are deprecated
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if let X...Y = 0 {} //~ ERROR `...` range patterns are deprecated
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if let true...Y = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR `...` range patterns are deprecated
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if let X...true = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR `...` range patterns are deprecated
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if let .0...Y = 0 {} //~ ERROR mismatched types
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//~^ ERROR float literals must have an integer part
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//~| ERROR `...` range patterns are deprecated
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if let X... .0 = 0 {} //~ ERROR mismatched types
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//~^ ERROR float literals must have an integer part
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//~| ERROR `...` range patterns are deprecated
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}
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fn exclusive_from() {
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if let 0.. = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X..` range patterns are not supported
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if let X.. = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X..` range patterns are not supported
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if let true.. = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X..` range patterns are not supported
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if let .0.. = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X..` range patterns are not supported
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//~| ERROR float literals must have an integer part
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}
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fn inclusive_from() {
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if let 0..= = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X..=` range patterns are not supported
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if let X..= = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X..=` range patterns are not supported
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if let true..= = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X..=` range patterns are not supported
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if let .0..= = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X..=` range patterns are not supported
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//~| ERROR float literals must have an integer part
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}
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fn inclusive2_from() {
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if let 0... = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X...` range patterns are not supported
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//~| ERROR `...` range patterns are deprecated
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if let X... = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X...` range patterns are not supported
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//~| ERROR `...` range patterns are deprecated
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if let true... = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X...` range patterns are not supported
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//~| ERROR `...` range patterns are deprecated
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if let .0... = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `X...` range patterns are not supported
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//~| ERROR float literals must have an integer part
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//~| ERROR `...` range patterns are deprecated
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}
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fn exclusive_to() {
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if let ..0 = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `..X` range patterns are not supported
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if let ..Y = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `..X` range patterns are not supported
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if let ..true = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `..X` range patterns are not supported
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if let .. .0 = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `..X` range patterns are not supported
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//~| ERROR float literals must have an integer part
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}
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fn inclusive_to() {
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if let ..=3 = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `..=X` range patterns are not supported
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if let ..=Y = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `..=X` range patterns are not supported
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if let ..=true = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `..=X` range patterns are not supported
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if let ..=.0 = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `..=X` range patterns are not supported
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//~| ERROR float literals must have an integer part
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}
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fn inclusive2_to() {
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if let ...3 = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `...X` range patterns are not supported
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//~| ERROR `...` range patterns are deprecated
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if let ...Y = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `...X` range patterns are not supported
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//~| ERROR `...` range patterns are deprecated
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if let ...true = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `...X` range patterns are not supported
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//~| ERROR `...` range patterns are deprecated
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if let ....3 = 0 {} //~ ERROR only char and numeric types
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//~^ ERROR arbitrary expressions aren't allowed in patterns
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//~| ERROR `...X` range patterns are not supported
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//~| ERROR float literals must have an integer part
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//~| ERROR `...` range patterns are deprecated
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}

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