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Diagnostics.pqm
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Diagnostics.pqm
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let
Diagnostics.LogValue = (prefix, value, optional delayed) =>
Diagnostics.Trace(
TraceLevel.Information,
prefix & ": " & (try Diagnostics.ValueToText(value) otherwise "<error getting value>"),
value,
delayed
),
Diagnostics.LogValue2 = (prefix, value, result, optional delayed) =>
Diagnostics.Trace(TraceLevel.Information, prefix & ": " & Diagnostics.ValueToText(value), result, delayed),
Diagnostics.LogFailure = (text, function) =>
let
result = try function()
in
if result[HasError] then
Diagnostics.LogValue2(text, result[Error], () => error result[Error], true)
else
result[Value],
Diagnostics.WrapFunctionResult = (innerFunction as function, outerFunction as function) as function =>
Function.From(Value.Type(innerFunction), (list) => outerFunction(() => Function.Invoke(innerFunction, list))),
Diagnostics.WrapHandlers = (handlers as record) as record =>
Record.FromList(
List.Transform(
Record.FieldNames(handlers),
(h) =>
Diagnostics.WrapFunctionResult(Record.Field(handlers, h), (fn) => Diagnostics.LogFailure(h, fn))
),
Record.FieldNames(handlers)
),
Diagnostics.ValueToText = (value) =>
let
List.TransformAndCombine = (list, transform, separator) =>
Text.Combine(List.Transform(list, transform), separator),
Serialize.Binary = (x) => "#binary(" & Serialize(Binary.ToList(x)) & ") ",
Serialize.Function = (x) =>
_serialize_function_param_type(
Type.FunctionParameters(Value.Type(x)), Type.FunctionRequiredParameters(Value.Type(x))
)
& " as "
& _serialize_function_return_type(Value.Type(x))
& " => (...) ",
Serialize.List = (x) => "{" & List.TransformAndCombine(x, Serialize, ", ") & "} ",
Serialize.Record = (x) =>
"[ "
& List.TransformAndCombine(
Record.FieldNames(x),
(item) => Serialize.Identifier(item) & " = " & Serialize(Record.Field(x, item)),
", "
)
& " ] ",
Serialize.Table = (x) =>
"#table( type " & _serialize_table_type(Value.Type(x)) & ", " & Serialize(Table.ToRows(x)) & ") ",
Serialize.Identifier = Expression.Identifier,
Serialize.Type = (x) => "type " & _serialize_typename(x),
_serialize_typename = (x, optional funtype as logical) =>
// Optional parameter: Is this being used as part of a function signature?
let
isFunctionType = (x as type) =>
try if Type.FunctionReturn(x) is type then true else false otherwise false,
isTableType = (x as type) =>
try if Type.TableSchema(x) is table then true else false otherwise false,
isRecordType = (x as type) =>
try if Type.ClosedRecord(x) is type then true else false otherwise false,
isListType = (x as type) => try if Type.ListItem(x) is type then true else false otherwise false
in
if funtype = null and isTableType(x) then
_serialize_table_type(x)
else if funtype = null and isListType(x) then
"{ " & @_serialize_typename(Type.ListItem(x)) & " }"
else if funtype = null and isFunctionType(x) then
"function " & _serialize_function_type(x)
else if funtype = null and isRecordType(x) then
_serialize_record_type(x)
else if x = type any then
"any"
else
let
base = Type.NonNullable(x)
in
(if Type.IsNullable(x) then "nullable " else "")
& (
if base = type anynonnull then
"anynonnull"
else if base = type binary then
"binary"
else if base = type date then
"date"
else if base = type datetime then
"datetime"
else if base = type datetimezone then
"datetimezone"
else if base = type duration then
"duration"
else if base = type logical then
"logical"
else if base = type none then
"none"
else if base = type null then
"null"
else if base = type number then
"number"
else if base = type text then
"text"
else if base = type time then
"time"
else if base = type type then
"type"
else
// Abstract types
if base = type function then
"function"
else if base = type table then
"table"
else if base = type record then
"record"
else if base = type list then
"list"
else
"any /*Actually unknown type*/"
),
_serialize_table_type = (x) =>
let
schema = Type.TableSchema(x)
in
"table "
& (
if Table.IsEmpty(schema) then
""
else
"["
& List.TransformAndCombine(
Table.ToRecords(Table.Sort(schema, "Position")),
each Serialize.Identifier(_[Name]) & " = " & _[Kind],
", "
)
& "] "
),
_serialize_record_type = (x) =>
let
flds = Type.RecordFields(x)
in
if Record.FieldCount(flds) = 0 then
"record"
else
"["
& List.TransformAndCombine(
Record.FieldNames(flds),
(item) =>
Serialize.Identifier(item)
& "="
& _serialize_typename(Record.Field(flds, item)[Type]),
", "
)
& (if Type.IsOpenRecord(x) then ", ..." else "")
& "]",
_serialize_function_type = (x) =>
_serialize_function_param_type(Type.FunctionParameters(x), Type.FunctionRequiredParameters(x))
& " as "
& _serialize_function_return_type(x),
_serialize_function_param_type = (t, n) =>
let
funsig = Table.ToRecords(
Table.TransformColumns(
Table.AddIndexColumn(Record.ToTable(t), "isOptional", 1), {"isOptional", (x) => x > n}
)
)
in
"("
& List.TransformAndCombine(
funsig,
(item) =>
(if item[isOptional] then "optional " else "")
& Serialize.Identifier(item[Name])
& " as "
& _serialize_typename(item[Value], true),
", "
)
& ")",
_serialize_function_return_type = (x) => _serialize_typename(Type.FunctionReturn(x), true),
Serialize = (x) as text =>
if x is binary then
try Serialize.Binary(x) otherwise "null /*serialize failed*/"
else if x is date then
try Expression.Constant(x) otherwise "null /*serialize failed*/"
else if x is datetime then
try Expression.Constant(x) otherwise "null /*serialize failed*/"
else if x is datetimezone then
try Expression.Constant(x) otherwise "null /*serialize failed*/"
else if x is duration then
try Expression.Constant(x) otherwise "null /*serialize failed*/"
else if x is function then
try Serialize.Function(x) otherwise "null /*serialize failed*/"
else if x is list then
try Serialize.List(x) otherwise "null /*serialize failed*/"
else if x is logical then
try Expression.Constant(x) otherwise "null /*serialize failed*/"
else if x is null then
try Expression.Constant(x) otherwise "null /*serialize failed*/"
else if x is number then
try Expression.Constant(x) otherwise "null /*serialize failed*/"
else if x is record then
try Serialize.Record(x) otherwise "null /*serialize failed*/"
else if x is table then
try Serialize.Table(x) otherwise "null /*serialize failed*/"
else if x is text then
try Expression.Constant(x) otherwise "null /*serialize failed*/"
else if x is time then
try Expression.Constant(x) otherwise "null /*serialize failed*/"
else if x is type then
try Serialize.Type(x) otherwise "null /*serialize failed*/"
else
"[#_unable_to_serialize_#]"
in
try Serialize(value) otherwise "<serialization failed>"
in
[
LogValue = Diagnostics.LogValue,
LogValue2 = Diagnostics.LogValue2,
LogFailure = Diagnostics.LogFailure,
WrapFunctionResult = Diagnostics.WrapFunctionResult,
WrapHandlers = Diagnostics.WrapHandlers,
ValueToText = Diagnostics.ValueToText
]