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399 lines
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<article data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil">
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<h1 id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil" class="text-break">
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Class NcExpressionDialectUtil
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</h1>
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<div class="facts text-secondary">
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<dl><dt>Namespace</dt><dd><a class="xref" href="Hi.html">Hi</a>.<a class="xref" href="Hi.NcParsers.html">NcParsers</a>.<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.html">EvaluationSyntaxs</a>.<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.html">Evaluation</a></dd></dl>
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<dl><dt>Assembly</dt><dd>HiMech.dll</dd></dl>
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</div>
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<div class="markdown summary"><p>Dispatch helpers over <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect.html">NcExpressionDialect</a> so shared
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syntaxes (<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.VariableEvaluatorSyntax.html">VariableEvaluatorSyntax</a>, the assignment/tag
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capture syntaxes) stay brand-agnostic: they hold a dialect value and
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route through here instead of hard-coding a parser type.</p>
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</div>
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<div class="markdown conceptual"></div>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public static class NcExpressionDialectUtil</code></pre>
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</div>
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<dl class="typelist inheritance">
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<dt>Inheritance</dt>
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<dd>
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<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
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<div><span class="xref">NcExpressionDialectUtil</span></div>
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</dd>
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</dl>
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<dl class="typelist inheritedMembers">
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<dt>Inherited Members</dt>
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<dd>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object)">object.Equals(object)</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object-system-object)">object.Equals(object, object)</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gethashcode">object.GetHashCode()</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gettype">object.GetType()</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.memberwiseclone">object.MemberwiseClone()</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.referenceequals">object.ReferenceEquals(object, object)</a>
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</div>
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<div>
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.tostring">object.ToString()</a>
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</div>
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</dd></dl>
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<h2 class="section" id="methods">Methods
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</h2>
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<a id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_IsVariableKey_" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.IsVariableKey*"></a>
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<h3 id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_IsVariableKey_Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialect_System_String_" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.IsVariableKey(Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect,System.String)">
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IsVariableKey(NcExpressionDialect, string)
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</h3>
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<div class="markdown level1 summary"><p>Cheap validity gate for variable keys entering the evaluator's lookup
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chain — rejects obviously-non-variable keys before the chain walk.
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Keys are produced by the dialect's own parser, so this is defensive.</p>
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</div>
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<div class="markdown level1 conceptual"></div>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public static bool IsVariableKey(NcExpressionDialect dialect, string key)</code></pre>
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</div>
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<h4 class="section">Parameters</h4>
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<dl class="parameters">
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<dt><code>dialect</code> <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect.html">NcExpressionDialect</a></dt>
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<dd></dd>
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<dt><code>key</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></dt>
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<dd></dd>
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</dl>
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<h4 class="section">Returns</h4>
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<dl class="parameters">
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<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.boolean">bool</a></dt>
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<dd></dd>
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</dl>
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<a id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_MakePrefixParser_" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.MakePrefixParser*"></a>
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<h3 id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_MakePrefixParser_Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialect_" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.MakePrefixParser(Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect)">
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MakePrefixParser(NcExpressionDialect)
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</h3>
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<div class="markdown level1 summary"><p>Materializes a dialect into the optional longest-valid-prefix hook
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the capture helpers take
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(<a class="xref" href="Hi.NcParsers.Syntaxs.NcSyntaxUtil.html#Hi_NcParsers_Syntaxs_NcSyntaxUtil_GrabTagEqualsValue_System_String__System_Collections_Generic_IEnumerable_System_String__Hi_NcParsers_Syntaxs_ExpressionPrefixParser_">GrabTagEqualsValue(ref string, IEnumerable<string>, ExpressionPrefixParser)</a> /
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<a class="xref" href="Hi.NcParsers.Syntaxs.NcSyntaxUtil.html#Hi_NcParsers_Syntaxs_NcSyntaxUtil_GrabTagAssignment_System_String__System_Collections_Generic_IEnumerable_System_String__System_String_System_Collections_Generic_IEnumerable_System_String__Hi_NcParsers_Syntaxs_ExpressionPrefixParser_">GrabTagAssignment(ref string, IEnumerable<string>, string, IEnumerable<string>, ExpressionPrefixParser)</a>); <code>null</code>
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for <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialect_None">None</a> and for dialects without
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prefix support (legacy lexical capture).</p>
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</div>
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<div class="markdown level1 conceptual"></div>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public static ExpressionPrefixParser MakePrefixParser(NcExpressionDialect dialect)</code></pre>
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</div>
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<h4 class="section">Parameters</h4>
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<dl class="parameters">
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<dt><code>dialect</code> <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect.html">NcExpressionDialect</a></dt>
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<dd></dd>
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</dl>
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<h4 class="section">Returns</h4>
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<dl class="parameters">
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<dt><a class="xref" href="Hi.NcParsers.Syntaxs.ExpressionPrefixParser.html">ExpressionPrefixParser</a></dt>
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<dd></dd>
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</dl>
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<a id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_TryParse_" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.TryParse*"></a>
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<h3 id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_TryParse_Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialect_System_String_Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpr__System_String__" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.TryParse(Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect,System.String,Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpr@,System.String@)">
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TryParse(NcExpressionDialect, string, out NcExpr, out string)
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</h3>
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<div class="markdown level1 summary"><p>Full-string parse in the given dialect (the whole source must be one
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expression). <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialect_None">None</a> always fails —
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callers on the None path never parse.</p>
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</div>
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<div class="markdown level1 conceptual"></div>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public static bool TryParse(NcExpressionDialect dialect, string source, out NcExpr expr, out string error)</code></pre>
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</div>
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<h4 class="section">Parameters</h4>
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<dl class="parameters">
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<dt><code>dialect</code> <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect.html">NcExpressionDialect</a></dt>
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<dd></dd>
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<dt><code>source</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></dt>
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<dd></dd>
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<dt><code>expr</code> <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpr.html">NcExpr</a></dt>
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<dd></dd>
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<dt><code>error</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></dt>
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<dd></dd>
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</dl>
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<h4 class="section">Returns</h4>
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<dl class="parameters">
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<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.boolean">bool</a></dt>
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<dd></dd>
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</dl>
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<a id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_TryParsePrefix_" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.TryParsePrefix*"></a>
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<h3 id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_TryParsePrefix_Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialect_System_String_System_Int32__" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.TryParsePrefix(Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect,System.String,System.Int32@)">
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TryParsePrefix(NcExpressionDialect, string, out int)
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</h3>
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<div class="markdown level1 summary"><p>Longest-valid-prefix parse for parser-delimited RHS capture. Only
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dialects that support prefix parsing return <code>true</code>; the Fanuc
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dialect keeps its lexical capture (no known ambiguity to fix) and
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reports <code>false</code> so callers use their legacy boundary.</p>
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</div>
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<div class="markdown level1 conceptual"></div>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public static bool TryParsePrefix(NcExpressionDialect dialect, string source, out int consumedLength)</code></pre>
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</div>
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<h4 class="section">Parameters</h4>
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<dl class="parameters">
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<dt><code>dialect</code> <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect.html">NcExpressionDialect</a></dt>
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<dd></dd>
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<dt><code>source</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></dt>
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<dd></dd>
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<dt><code>consumedLength</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></dt>
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<dd></dd>
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</dl>
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<h4 class="section">Returns</h4>
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<dl class="parameters">
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<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.boolean">bool</a></dt>
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<dd></dd>
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</dl>
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<a id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_VariableRefRegex_" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.VariableRefRegex*"></a>
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<h3 id="Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialectUtil_VariableRefRegex_Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionDialect_" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialectUtil.VariableRefRegex(Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect)">
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VariableRefRegex(NcExpressionDialect)
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</h3>
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<div class="markdown level1 summary"><p>Regex matching this dialect's variable-reference tokens inside a raw
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RHS string. Used only for best-effort same-block forward-reference
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detection (<code>VariableEvaluator–SameBlockForwardReference</code>);
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expression evaluation itself goes through the dialect parser. The
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Siemens pattern covers R-parameters only — named/<code>$</code> same-block
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forward references are vanishingly rare in CAM output and go
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unwarned.</p>
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</div>
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<div class="markdown level1 conceptual"></div>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public static Regex VariableRefRegex(NcExpressionDialect dialect)</code></pre>
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</div>
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<h4 class="section">Parameters</h4>
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<dl class="parameters">
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<dt><code>dialect</code> <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionDialect.html">NcExpressionDialect</a></dt>
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<dd></dd>
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</dl>
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<h4 class="section">Returns</h4>
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<dl class="parameters">
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<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.text.regularexpressions.regex">Regex</a></dt>
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<dd></dd>
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</dl>
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</article>
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