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[Swift] improvements to equality functions #3302

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merged 3 commits into from
Mar 28, 2022
Merged

[Swift] improvements to equality functions #3302

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42ef17f
fix default equality
Dante-Broggi Oct 12, 2021
1d24a31
equality cases
Dante-Broggi Oct 12, 2021
dce2778
optional unwrapping
Dante-Broggi Oct 12, 2021
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18 changes: 3 additions & 15 deletions runtime/Swift/Sources/Antlr4/atn/ATNConfig.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -168,8 +168,8 @@ public func ==(lhs: ATNConfig, rhs: ATNConfig) -> Bool {
return true
}

if (lhs is LexerATNConfig) && (rhs is LexerATNConfig) {
return (lhs as! LexerATNConfig) == (rhs as! LexerATNConfig)
if let l = lhs as? LexerATNConfig, let r = rhs as? LexerATNConfig {
return l == r


}
Expand All @@ -185,19 +185,7 @@ public func ==(lhs: ATNConfig, rhs: ATNConfig) -> Bool {
return false
}

var contextCompare = false

if lhs.context == nil && rhs.context == nil {
contextCompare = true
} else if lhs.context == nil && rhs.context != nil {
contextCompare = false
} else if lhs.context != nil && rhs.context == nil {
contextCompare = false
} else {
contextCompare = (lhs.context! == rhs.context!)
}

if !contextCompare {
if lhs.context != rhs.context {
return false
}

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23 changes: 2 additions & 21 deletions runtime/Swift/Sources/Antlr4/atn/LexerATNConfig.swift
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Expand Up @@ -108,30 +108,11 @@ public func ==(lhs: LexerATNConfig, rhs: LexerATNConfig) -> Bool {
return false
}

if lhs.getLexerActionExecutor() == nil && rhs.getLexerActionExecutor() != nil {
if lhs.getLexerActionExecutor() != rhs.getLexerActionExecutor() {
return false
} else if lhs.getLexerActionExecutor() != nil && rhs.getLexerActionExecutor() == nil {
return false
} else if lhs.getLexerActionExecutor() == nil && rhs.getLexerActionExecutor() == nil {

} else if !(lhs.getLexerActionExecutor()! == rhs.getLexerActionExecutor()!) {
return false
}


var contextCompare = false

if lhs.context == nil && rhs.context == nil {
contextCompare = true
} else if lhs.context == nil && rhs.context != nil {
contextCompare = false
} else if lhs.context != nil && rhs.context == nil {
contextCompare = false
} else {
contextCompare = (lhs.context! == rhs.context!)
}

if !contextCompare{
if lhs.context != rhs.context {
return false
}

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10 changes: 1 addition & 9 deletions runtime/Swift/Sources/Antlr4/atn/SingletonPredictionContext.swift
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Expand Up @@ -71,16 +71,8 @@ public func ==(lhs: SingletonPredictionContext, rhs: SingletonPredictionContext)
if lhs.returnState != rhs.returnState {
return false
}
var parentCompare = false
if (lhs.parent == nil) && (rhs.parent == nil) {
parentCompare = true
} else if lhs.parent == nil || rhs.parent == nil {
parentCompare = false
} else {
parentCompare = (lhs.parent! == rhs.parent!)
}

return parentCompare
return lhs.parent == rhs.parent
}


2 changes: 1 addition & 1 deletion runtime/Swift/Sources/Antlr4/tree/pattern/Chunk.swift
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Expand Up @@ -23,6 +23,6 @@ public class Chunk: Equatable {
}

public func isEqual(_ other: Chunk) -> Bool {
return false
return self === other
}
}