Better error message when debugging JSONParser (#15)

fabianfett · web-flow · commit 9f3d99429b6d · 2020-03-17T09:22:25.000+01:00
diff --git a/Sources/PureSwiftJSONParsing/JSONParser.swift b/Sources/PureSwiftJSONParsing/JSONParser.swift
@@ -29,7 +29,7 @@ public struct JSONParser {
     #if DEBUG
     defer {
       guard self.depth == 0 else {
-        preconditionFailure()
+        preconditionFailure("Expected to end parsing with a depth of 0")
       }
     }
     #endif

Original file line number	Diff line number	Diff line change
`@@ -29,7 +29,7 @@ public struct JSONParser {`
`29`	`29`	`#if DEBUG`
`30`	`30`	`defer {`
`31`	`31`	`guard self.depth == 0 else {`
`32`		`- preconditionFailure()`
	`32`	`+ preconditionFailure("Expected to end parsing with a depth of 0")`
`33`	`33`	`}`
`34`	`34`	`}`
`35`	`35`	`#endif`