Class FanucConditionReader

Namespace

Hi.NcParsers.EvaluationSyntaxs.Fanuc

Assembly

HiMech.dll

Shared polymorphic reader for Fanuc Custom Macro B conditional gate expressions (IF [...] GOTO, IF [...] THEN, WHILE [...] DO m). The condition node is read post-evaluation — VariableEvaluatorSyntax's pass-2 tree walk has already substituted the original expression string with a numeric JsonValue when evaluation succeeded; this helper maps that node to a tri-state truthy outcome plus a display form for diagnostics.

Three states, mapping directly to the ConditionEvaluated: true | false | null stamp shape used by all three consumers (see FanucGotoSyntax, FanucIfThenSyntax, and the WHILE-loop syntax):

• Truthy = true — node is a finite non-zero numeric; gate fires.
• Truthy = false — node is a finite numeric equal to zero; gate falls through silently.
• Truthy = null — node is null, still a string (evaluator failed), or non-finite double (NaN / ±∞); gate falls through and the caller emits its own <Syntax>--ConditionNotEvaluated warning.

The Display form is the human-readable expression text for diagnostic messages. For resolved numerics it is the value formatted via InvariantCulture; for unresolved strings it is the original expression text. Diagnostics build their own message text — the helper just provides the source string so the caller can compose "IF [<Display>] GOTO ..." etc.

Callers typically DeepClone() the original node before passing in here, then again before stamping back, so removing the parsing section and writing the host-level stamp can happen in any order without dangling references.

public static class FanucConditionReader

Inheritance

object

FanucConditionReader

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Methods

ReadCondition(JsonNode)

Maps a post-evaluation condition JsonNode to a display string + tri-state truthy outcome. See class XmlDoc for the three states' definitions.

public static (string Display, bool? Truthy) ReadCondition(JsonNode node)

Parameters

node JsonNode

Returns

(string Display, bool? Truthy)