| <html><head><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>5.8.3. Actual Parameters</title><link href="style.css" rel="stylesheet" type="text/css"><meta content="DocBook XSL Stylesheets V1.72.0" name="generator"><link rel="start" href="index.html" title="The VIATRA2 Model Transformation Framework"><link rel="up" href="sec_Parameters.html" title="5.8. Parameters and Variable Lists"><link rel="prev" href="def_DirectedFormalParameter.html" title="5.8.2. Directed Formal Parameters"><link rel="next" href="def_ConstrainedVariableList.html" title="5.8.4. Constrained Variable List"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">5.8.3. Actual Parameters</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="def_DirectedFormalParameter.html">Prev</a> </td><th align="center" width="60%">5.8. Parameters and Variable Lists</th><td align="right" width="20%"> <a accesskey="n" href="def_ConstrainedVariableList.html">Next</a></td></tr></table><hr></div><div class="sect3" lang="en"><div class="titlepage"><div><div><h4 class="title"><a name="def_ActualParameter"></a>5.8.3. Actual Parameters</h4></div></div></div><div class="tip" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Tip: Description"><tr><td valign="top" align="center" rowspan="2" width="25"><img alt="[Tip]" src="images/tip.png"></td><th align="left"><a name="def_ActualParameter_Description"></a>Description</th></tr><tr><td valign="top" align="left"><p> | |
| <span class="strong"><strong>Actual parameters</strong></span> | |
| <a name="N13068" class="indexterm"></a> | |
| <a name="N1306D" class="indexterm"></a> | |
| describe the values passes as parameter when invoking | |
| ASM rules, ASM functions, graph patterns and graph transformation rules. | |
| These values are substituted with the formal parameters of these constructs | |
| during execution. | |
| </p></td></tr></table></div><div class="important" style="margin-left: 0.5in; margin-right: 0.5in;"><table border="0" summary="Important: Syntax"><tr><td valign="top" align="center" rowspan="2" width="25"><img alt="[Important]" src="images/important.png"></td><th align="left"><a name="def_ActualParameter_Syntax"></a>Syntax</th></tr><tr><td valign="top" align="left"><pre class="programlisting"> | |
| ActualParamsAST ::= <a href="def_ArithmeticTerm.html" title="5.3.1. Arithmetic Term">ArithmeticTermAST</a> | |
| | ActualParamsAST COMMA <a href="def_ArithmeticTerm.html" title="5.3.1. Arithmetic Term">ArithmeticTermAST</a> | |
| ActualParamsPatternVariablesAST ::= <a href="def_PatternVariable.html" title="2.1.6. Pattern Variable">PatternVariableRefAST</a> | |
| | ActualParamsPatternVariablesAST COMMA <a href="def_PatternVariable.html" title="2.1.6. Pattern Variable">PatternVariableRefAST</a> | |
| </pre><p> | |
| <span class="strong"><strong>Actual parameters</strong></span> are defined as a comma separated list | |
| of ASM terms that are associated with the formal parameters of a pattern or rules. | |
| </p><p> | |
| <span class="strong"><strong>Actual parameters used in <a href="def_PatternComposition.html" title="2.1.5. Pattern Composition">pattern composition</a></strong></span> | |
| are defined as a comma separated list of <a href="def_PatternVariable.html" title="2.1.6. Pattern Variable">pattern variables</a>. | |
| </p><p> | |
| In case of GT or ASM rules, the formal parameters have a direction (see | |
| <a href="def_DirectedFormalParameter.html" title="5.8.2. Directed Formal Parameters">directed formal parameter</a>). | |
| This implies that actual parameters which are passed for output formal | |
| parameters can be only variables. Actual parameters that are associated | |
| with input-only formal parameters can be arbitrary ASM | |
| <a href="def_ArithmeticTerm.html" title="5.3.1. Arithmetic Term">arithmetic terms</a>. | |
| </p></td></tr></table></div><div class="highlights"><a name="def_ActualParameter_UsedBy"></a><p><b>Used By: </b> | |
| <a href="def_GTRuleCall.html" title="3.4.1. GTRule Call">GT rule call</a>, | |
| <a href="def_PatternComposition.html" title="2.1.5. Pattern Composition">pattern composition</a>, | |
| <a href="def_GraphPatternCall.html" title="2.1.4. Graph Pattern Call">graph pattern call</a>, | |
| <a href="def_CallRule.html" title="4.2.2. Call Rule">call rule</a> | |
| <a href="def_AsmFunctionLocation.html" title="5.5.3. ASM Function Location">ASM function location</a>, | |
| <a href="def_PredefinedFunctionCall.html" title="5.6.1. Predefined Function Call">predefined function call</a>, | |
| </p></div></div><div class="navfooter"><hr><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="def_DirectedFormalParameter.html">Prev</a> </td><td align="center" width="20%"><a accesskey="u" href="sec_Parameters.html">Up</a></td><td align="right" width="40%"> <a accesskey="n" href="def_ConstrainedVariableList.html">Next</a></td></tr><tr><td valign="top" align="left" width="40%">5.8.2. Directed Formal Parameters </td><td align="center" width="20%"><a accesskey="h" href="index.html">Home</a></td><td valign="top" align="right" width="40%"> 5.8.4. Constrained Variable List</td></tr></table></div></body></html> |