369 lines
21 KiB
HTML
369 lines
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<article data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation">
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<h1 id="Hi_NcParsers_EvaluationSyntaxs_Evaluation" data-uid="Hi.NcParsers.EvaluationSyntaxs.Evaluation" class="text-break">Namespace Hi.NcParsers.EvaluationSyntaxs.Evaluation</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.EvaluationSyntaxs.Evaluation.LocalVariableLookup.html">LocalVariableLookup</a></dt>
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<dd><p>Reads Fanuc-style local macro variables (<code>#1-#33</code>) from
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<code>Vars.Local</code> on the current <a class="xref" href="Hi.NcParsers.Syntaxs.SyntaxPiece.html">SyntaxPiece</a> JSON,
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falling back to the immediately previous block when they share the
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same <a class="xref" href="Hi.NcParsers.Keywords.MacroFrame.html">MacroFrame</a> id. Self-gates the id range
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so the evaluator's
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<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.VariableEvaluatorSyntax.html#Hi_NcParsers_EvaluationSyntaxs_VariableEvaluatorSyntax_RuntimeVariableLookups">RuntimeVariableLookups</a> chain can
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fall through to the next lookup for out-of-range keys.</p>
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<p>
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Two-step lookup (mirrors <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.VolatileVariableLookup.html">VolatileVariableLookup</a>): the
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current block sees writes that <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Fanuc.FanucMacroCallSyntax.html">FanucMacroCallSyntax</a>
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stamped at inline time (the call-line argument bindings) and writes
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that <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Fanuc.FanucLocalVariableReadingSyntax.html">FanucLocalVariableReadingSyntax</a>
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applied on this block before the lookup runs; the previous block
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(frame-checked) supplies body-internal writes from the prior block in
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the same macro frame. Looking past the previous block is unnecessary
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because the reader carries forward block-by-block within a frame.
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</p>
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<p>
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Frame isolation via <a class="xref" href="Hi.NcParsers.Keywords.MacroFrame.html">MacroFrame</a>: a previous
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block whose frame id differs from the current block's is skipped —
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a macro body's body-internal locals are invisible to the caller after
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return, and the caller's main-frame locals are invisible inside the
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macro. M98/M198 subprogram inlining
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(<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.SubProgramCallSyntax.html">SubProgramCallSyntax</a>) deliberately
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does <i>not</i> stamp <a class="xref" href="Hi.NcParsers.Keywords.MacroFrame.html">MacroFrame</a> on its
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inlined blocks, so the callee inherits the caller's frame and sees
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the caller's locals — matching real Fanuc M98 semantics.
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</p>
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<p>
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Stateless and dependency-free — instances are interchangeable.
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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.EvaluationSyntaxs.Evaluation.NcBinaryExpr.html">NcBinaryExpr</a></dt>
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<dd><p>Binary operation on two operands. Covers arithmetic
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(<code>+ - * /</code> / <code>MOD</code>), comparison
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(<code>EQ NE GT GE LT LE</code>, yielding <code>1.0</code> / <code>0.0</code>), and
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logical bitwise (<code>AND OR XOR</code>, operands truncated to
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int64">long</a>).</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.EvaluationSyntaxs.Evaluation.NcExpr.html">NcExpr</a></dt>
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<dd><p>AST root for a Fanuc Custom Macro B value expression. Concrete leaves
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and combinators sit alongside <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionParser.html">NcExpressionParser</a>; walking
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is the job of <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionEvaluator.html">NcExpressionEvaluator</a>.</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.EvaluationSyntaxs.Evaluation.NcExpressionEvaluator.html">NcExpressionEvaluator</a></dt>
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<dd><p>Walks an <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpr.html">NcExpr</a> AST and produces an <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.EvalResult.html">EvalResult</a>.
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Resolves <code>#nnn</code> via an <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.IVariableLookup.html">IVariableLookup</a>; built-in function
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names are matched case-insensitively against a fixed table.</p>
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<p>
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Phase-1 supports: <code>SIN COS TAN ASIN ACOS ATAN SQRT ABS ROUND FIX FUP LN
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EXP POW</code>. Trigonometric arguments and results are in degrees, matching
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Fanuc Custom Macro B convention. Unknown function names surface as
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<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionEvaluator.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionEvaluator_UnsupportedFunctionCode">UnsupportedFunctionCode</a>; arity mismatches as
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<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionEvaluator.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionEvaluator_ArgumentMismatchCode">ArgumentMismatchCode</a>; division / MOD by zero and domain
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errors (e.g. <code>SQRT[-1]</code>) as <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionEvaluator.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionEvaluator_MathErrorCode">MathErrorCode</a>; vacant
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operands as <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionEvaluator.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionEvaluator_VacantErrorCode">VacantErrorCode</a>.
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</p>
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<p>
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<b>Numeric domain & type conventions.</b> All values are IEEE 754
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.double">double</a> — there is no separate bool / int type at runtime.
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Comparison ops (<code>EQ NE GT GE LT LE</code>) yield <code>1.0</code> (true) or
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<code>0.0</code> (false), using strict double equality / ordering (NaN
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compares as IEEE specifies — <code>NaN EQ NaN</code> is <code>0.0</code>). Logical
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ops (<code>AND OR XOR</code>) truncate each operand to a 64-bit signed
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integer (<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.math.truncate#system-math-truncate(system-double)">Truncate(double)</a> then cast to
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<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int64">long</a>) before applying the bitwise operation; non-finite
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or out-of-range operands surface <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionEvaluator.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcExpressionEvaluator_MathErrorCode">MathErrorCode</a> rather
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than silently wrapping. Truthiness at caller-side <code>IF / WHILE</code>
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gates is <code>value != 0</code> — any non-zero value (bit, float, comparator
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result) is true.
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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.EvaluationSyntaxs.Evaluation.NcExpressionParser.html">NcExpressionParser</a></dt>
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<dd><p>Recursive-descent parser for Fanuc Custom Macro B value expressions.
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Pure: takes a string, produces an <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpr.html">NcExpr</a> AST. Performs no
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variable lookup and no evaluation.</p>
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<p>Grammar (lowest precedence at top):</p>
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<pre><code class="lang-csharp">expr := or-expr
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or-expr := and-expr (('OR' | 'XOR') and-expr)*
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and-expr := cmp-expr ('AND' cmp-expr)*
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cmp-expr := add-expr (('EQ' | 'NE' | 'GT' | 'GE' | 'LT' | 'LE') add-expr)*
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add-expr := term (('+' | '-') term)*
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term := factor (('*' | '/' | 'MOD') factor)*
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factor := ('+' | '-')? primary
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primary := number
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| '#' integer
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| '#' '[' expr ']'
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| '[' expr ']'
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| ident '[' arglist ']' ('/' '[' expr ']')?
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arglist := expr (',' expr)*</code></pre>
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<p>
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Function names and keyword operators (<code>MOD</code>, <code>EQ NE GT GE LT LE</code>,
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<code>AND OR XOR</code>) are case-insensitive (<code>SIN</code> = <code>sin</code>,
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<code>EQ</code> = <code>eq</code>); each keyword requires a non-identifier character
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on its right boundary so <code>EQ1</code> is not the <code>EQ</code> operator
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followed by <code>1</code>. Whitespace is skipped between tokens. The
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<code>'/' '[' expr ']'</code> tail captures the dual-bracket form Fanuc uses
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for <code>ATAN[a]/[b]</code>; non-ATAN callers that happen to use it produce a
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function with an extra arg, which the evaluator rejects with an arity
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error.
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</p>
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<p>
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Operator precedence intentionally puts boolean / logical layers below
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arithmetic so <code>#1 + 1 GT 0</code> parses as <code>(#1 + 1) GT 0</code> and
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<code>#1 GT 0 AND #2 LT 10</code> parses as <code>(#1 GT 0) AND (#2 LT 10)</code>,
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matching the Fanuc Custom Macro B spec for <code>IF [..] GOTO</code> /
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<code>IF [..] THEN</code> / <code>WHILE [..] DO</code> conditions.
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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.EvaluationSyntaxs.Evaluation.NcFunctionExpr.html">NcFunctionExpr</a></dt>
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<dd><p>Built-in function call like <code>SIN[x]</code>, <code>SQRT[x]</code>, <code>ATAN[a]/[b]</code>.</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.EvaluationSyntaxs.Evaluation.NcIndirectVariableExpr.html">NcIndirectVariableExpr</a></dt>
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<dd><p>Indirect variable reference <code>#[expr]</code>. The inner expression is
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evaluated and truncated toward zero to obtain an integer; the lookup key
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is then <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcIndirectVariableExpr.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcIndirectVariableExpr_Prefix">Prefix</a> concatenated with that integer
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(e.g. <code>Prefix="#"</code>, computed <code>124</code> → <code>"#124"</code>).</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.EvaluationSyntaxs.Evaluation.NcLiteralExpr.html">NcLiteralExpr</a></dt>
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<dd><p>Numeric literal (e.g. <code>1.5</code>, <code>15.</code>, <code>.5</code>, <code>1e-3</code>).</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.EvaluationSyntaxs.Evaluation.NcUnaryExpr.html">NcUnaryExpr</a></dt>
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<dd><p>Unary <code>+</code> or <code>-</code> applied to an operand.</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.EvaluationSyntaxs.Evaluation.NcVariableExpr.html">NcVariableExpr</a></dt>
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<dd><p>Direct variable reference; <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcVariableExpr.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_NcVariableExpr_Key">Key</a> is the raw source token
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(e.g. <code>"#124"</code>) passed verbatim to <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.IVariableLookup.html#Hi_NcParsers_EvaluationSyntaxs_Evaluation_IVariableLookup_Get_System_String_">Get(string)</a>.</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.EvaluationSyntaxs.Evaluation.VolatileVariableLookup.html">VolatileVariableLookup</a></dt>
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<dd><p>Reads Fanuc-style non-retained common variables (<code>#100-#499</code>)
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from <code>Vars.Volatile</code>. Self-gates the id range so the evaluator's
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<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.VariableEvaluatorSyntax.html#Hi_NcParsers_EvaluationSyntaxs_VariableEvaluatorSyntax_RuntimeVariableLookups">RuntimeVariableLookups</a> chain can
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fall through to the next lookup for out-of-range keys.</p>
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<p>
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Single-step lookup: <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.VolatileVariableReadingSyntax.html">VolatileVariableReadingSyntax</a> already
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dict-merges every block's <code>Vars.Volatile</code> into the next block, so
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the entry — if it exists — must be on the current block (when this
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lookup runs after the reader) or on the immediately previous block
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(when this lookup runs before the reader on the same block, which is
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the Fanuc preset's order — evaluator first, reader second). No
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arbitrary walk-back: such a walk would be defensive overkill given
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the reader's carry guarantee.
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</p>
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<p>
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Stateless and dependency-free — instances are interchangeable. Reads
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stay decoupled from the reader (read side here; write side in the
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reader).
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</p>
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</dd>
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</dl>
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<h3 id="structs">
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Structs
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</h3>
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<dl class="jumplist">
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<dt><a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.EvalResult.html">EvalResult</a></dt>
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<dd><p>Outcome of evaluating an <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpr.html">NcExpr</a>. Either a successful
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numeric value, or a failure with an error code matching the diagnostic
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catalogue used by reading / evaluator syntaxes.</p>
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</dd>
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</dl>
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<h3 id="interfaces">
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Interfaces
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</h3>
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<dl class="jumplist">
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<dt><a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.IRuntimeVariableLookup.html">IRuntimeVariableLookup</a></dt>
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<dd><p>Stateless variable lookup that needs per-block runtime context — the
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current <a class="xref" href="Hi.NcParsers.Syntaxs.SyntaxPiece.html">SyntaxPiece</a> node (for <a class="xref" href="Hi.Common.Collections.LazyLinkedListNode-1.html#Hi_Common_Collections_LazyLinkedListNode_1_Previous">Previous</a>
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traceback into runtime-state sections like <code>MachineCoordinateState</code>
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/ <code>ProgramXyz</code>) and the dependency list (so the lookup can read
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from sibling dependencies without holding a static reference).</p>
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<p>
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Distinguished from <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.IVariableLookup.html">IVariableLookup</a>: that one is for
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long-lived dependencies that already hold their own data (parameter
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tables, tool-offset wrappers, retained-variable tables) and need no
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block context. <code>IRuntimeVariableLookup</code> is for context-sensitive
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resolutions configured declaratively on
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<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.VariableEvaluatorSyntax.html#Hi_NcParsers_EvaluationSyntaxs_VariableEvaluatorSyntax_RuntimeVariableLookups">RuntimeVariableLookups</a>.
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</p>
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<p>
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Implementations should be brand-specific (e.g. Fanuc <code>#5001-#5043</code>
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position reads) and return <code>null</code> for keys outside their range so
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the evaluator's chain can fall through to the next lookup.
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</p>
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<p>
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Implementations are XML-serialised as part of
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<a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.VariableEvaluatorSyntax.html">VariableEvaluatorSyntax</a>'s round-trip: each impl exposes a
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static <code>XName</code>, registers itself with <a class="xref" href="Hi.Common.XmlUtils.XFactory.html#Hi_Common_XmlUtils_XFactory_Generators">Generators</a>,
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and implements <a class="xref" href="Hi.Common.XmlUtils.IMakeXmlSource.html#Hi_Common_XmlUtils_IMakeXmlSource_MakeXmlSource_System_String_System_String_System_Boolean_">MakeXmlSource(string, string, bool)</a>. Since impls
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are stateless, the typical body is just an empty element carrying the
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type name; brand identity is restored by XFactory dispatch.
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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.EvaluationSyntaxs.Evaluation.IVariableLookup.html">IVariableLookup</a></dt>
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<dd><p>Resolves a Custom Macro B variable reference to its current numeric value,
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or <code>null</code> for vacant (Fanuc <code><vacant></code>) and out-of-scope alike.</p>
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<p>
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The key is the raw source token — Fanuc <code>"#124"</code>, Heidenhain
|
|
<code>"Q1"</code>, Siemens <code>"R1"</code> — so the interface itself is brand-agnostic.
|
|
Implementations are typically narrow (one per id range / per brand prefix)
|
|
and parse the prefix locally; chain them at the call site by trying each
|
|
in priority order until one returns a non-<code>null</code> value.
|
|
</p>
|
|
<p>
|
|
A returned <code>null</code> is treated by <a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcExpressionEvaluator.html">NcExpressionEvaluator</a>
|
|
as vacant and surfaces as a <code>Variable--Vacant</code> failure when the
|
|
value is consumed in arithmetic context.
|
|
</p>
|
|
</dd>
|
|
</dl>
|
|
<h3 id="enums">
|
|
Enums
|
|
</h3>
|
|
<dl class="jumplist">
|
|
<dt><a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcBinaryOp.html">NcBinaryOp</a></dt>
|
|
<dd><p>Binary operators allowed in Fanuc Custom Macro B value expressions.</p>
|
|
</dd>
|
|
</dl>
|
|
<dl class="jumplist">
|
|
<dt><a class="xref" href="Hi.NcParsers.EvaluationSyntaxs.Evaluation.NcUnaryOp.html">NcUnaryOp</a></dt>
|
|
<dd><p>Unary operators allowed in Fanuc Custom Macro B value expressions.</p>
|
|
</dd>
|
|
</dl>
|
|
|
|
|
|
</article>
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