211 lines
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HTML
211 lines
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HTML
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<article data-uid="Hi.NcParsers.ParsingSyntaxs.Fanuc">
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<h1 id="Hi_NcParsers_ParsingSyntaxs_Fanuc" data-uid="Hi.NcParsers.ParsingSyntaxs.Fanuc" class="text-break">Namespace Hi.NcParsers.ParsingSyntaxs.Fanuc</h1>
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<div class="markdown level0 summary"></div>
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<div class="markdown level0 conceptual"></div>
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<div class="markdown level0 remarks"></div>
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<h3 id="classes">
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Classes
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</h3>
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<dl class="jumplist">
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<dt><a class="xref" href="Hi.NcParsers.ParsingSyntaxs.Fanuc.FanucGotoParsingSyntax.html">FanucGotoParsingSyntax</a></dt>
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<dd><p>Parses Fanuc Custom Macro B GOTO phrases out of the remaining
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<a class="xref" href="Hi.NcParsers.Keywords.IUnparsedTextDef.html#Hi_NcParsers_Keywords_IUnparsedTextDef_UnparsedText">UnparsedText</a> into a <code>Parsing.FanucGoto</code>
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sub-object. Two forms are recognised:</p>
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<ul><li><code>GOTO <n></code> — unconditional jump.</li><li><code>IF [<bool-expr>] GOTO <n></code> — conditional jump.</li></ul>
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<p>
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<code>IF [...] GOTO</code> is matched as a single phrase, not as an <code>IF</code>
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syntax composed with a <code>GOTO</code> syntax — Fanuc only permits the two
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fixed forms (the other being <code>IF [...] THEN <assignment></code>,
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out of scope here), so a phrase-level parser is more faithful and
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avoids parsing-ambiguity rabbit holes.
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</p>
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<p>
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<code><n></code> is captured as a raw token (literal like <code>"100"</code>,
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variable like <code>"#1"</code>, or bracketed expression like
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<code>"#[#2+5]"</code>). <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.VariableEvaluatorSyntax.html">VariableEvaluatorSyntax</a>
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substitutes the resolved literal back into the same field downstream;
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<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Fanuc.FanucGotoSyntax.html">FanucGotoSyntax</a> then parses the final
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string as an int. Storing as a string at parsing time mirrors how axis
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tags and canned-cycle params accept <code>#N</code> references and the
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evaluator rewrites them in place.
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</p>
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<p>
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Pipeline placement: after <a class="xref" href="Hi.NcParsers.ParsingSyntaxs.HeadIndexSyntax.html">HeadIndexSyntax</a> (so the leading
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<code>N{seq}</code> on a block like <code>N50 GOTO 100</code> has already been
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consumed) and after <a class="xref" href="Hi.NcParsers.ParsingSyntaxs.CommentSyntaxs.QuoteCommentSyntax.html">QuoteCommentSyntax</a>
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(so a parenthesised <code>(GOTO 100)</code> inside a comment never matches).
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The phrase consumes the entire remaining text on the block — Fanuc
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allows only the GOTO / IF-GOTO phrase after any preceding head index,
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no other instructions on the same block.
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</p>
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</dd>
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</dl>
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<dl class="jumplist">
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<dt><a class="xref" href="Hi.NcParsers.ParsingSyntaxs.Fanuc.FanucIfThenParsingSyntax.html">FanucIfThenParsingSyntax</a></dt>
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<dd><p>Parses the Fanuc Custom Macro B
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<code>IF [<bool-expr>] THEN <body></code> single-block conditional
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phrase out of <a class="xref" href="Hi.NcParsers.Keywords.IUnparsedTextDef.html#Hi_NcParsers_Keywords_IUnparsedTextDef_UnparsedText">UnparsedText</a> into a
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<code>Parsing.FanucIfThen</code> sub-object. Sibling to
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<a class="xref" href="Hi.NcParsers.ParsingSyntaxs.Fanuc.FanucGotoParsingSyntax.html">FanucGotoParsingSyntax</a> — Fanuc spec only permits two
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IF-led control phrases (<code>IF [...] GOTO <n></code> handled there,
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<code>IF [...] THEN <stmt></code> handled here) so each form is matched
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phrase-level rather than composed from a generic IF combinator.</p>
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<p>
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<b>Body shape.</b> The body after <code>THEN</code> is conceptually a single
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statement that affects the current block only — no jump, no label scan.
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Almost always a Custom Macro B assignment (<code>#nnn = <expr></code>);
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multiple assignments in the same body
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(<code>#100 = 5. #101 = #100 + 1</code>) are also accepted. The parsing
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syntax pre-extracts these via
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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__">GrabTagAssignment(ref string, IEnumerable<string>, string, IEnumerable<string>)</a> into
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<code>Parsing.FanucIfThen.PendingAssignments</code> as <code>{tag: rhs-string}</code>
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entries — that shape lets <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.VariableEvaluatorSyntax.html">VariableEvaluatorSyntax</a>'s
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pass-2 tree walk substitute each RHS to a numeric in place, and lets
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<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Fanuc.FanucIfThenSyntax.html">FanucIfThenSyntax</a> lift the
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resolved entries into <code>Parsing.Assignments</code> only when the gate
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condition fires (so unfired bodies leave no trace in the readers).
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</p>
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<p>
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<b>Pipeline placement.</b> This syntax must run before
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<a class="xref" href="Hi.NcParsers.ParsingSyntaxs.Fanuc.FanucGotoParsingSyntax.html">FanucGotoParsingSyntax</a> — the bare IF-GOTO regex over there
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(<code>^IF[..]GOTO n$</code>) is anchored, but consuming IF-THEN here first
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keeps the two phrases textually disjoint and avoids any future
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regression if either regex is loosened. Also placed before
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<a class="xref" href="Hi.NcParsers.ParsingSyntaxs.TagAssignmentSyntax.html">TagAssignmentSyntax</a> so a bare
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<code>IF [...] THEN #100 = 5.</code> is not first half-eaten as a plain
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assignment.
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</p>
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<p>
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Raw <a class="xref" href="Hi.NcParsers.Keywords.FanucIfThen.html#Hi_NcParsers_Keywords_FanucIfThen_BodyText">BodyText</a> is retained verbatim on the
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parsing section regardless of whether the body parsed as assignments —
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it carries the round-trip view and lets the evaluation syntax warn
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(<code>FanucIfThen--UnsupportedBody</code>) if no PendingAssignments were
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produced on a truthy condition.
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</p>
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</dd>
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</dl>
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<dl class="jumplist">
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<dt><a class="xref" href="Hi.NcParsers.ParsingSyntaxs.Fanuc.FanucProgramNumberSyntax.html">FanucProgramNumberSyntax</a></dt>
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<dd><p>Detects a Fanuc-family program identifier header — <code>O1234</code> or
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<code><O1234></code> — that follows a <a class="xref" href="Hi.NcParsers.Keywords.TapeBoundary.html">TapeBoundary</a>
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line, and records it under <a class="xref" href="Hi.NcParsers.Keywords.FanucProgramNumber.html">FanucProgramNumber</a> on the
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block JSON. The wrapping form (bare vs angle-bracketed) is preserved
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in <a class="xref" href="Hi.NcParsers.Keywords.FanucProgramNumber.html#Hi_NcParsers_Keywords_FanucProgramNumber_Wrapper">Wrapper</a> so the block can be emitted
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back to its original notation.</p>
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</dd>
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</dl>
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</article>
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