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<title>If Block - ARM Machine Readable Schema - 2.7.1</title>
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<div class="col-md-6 pull-left"><h1>AARCHMRS Schema <small>2.7.1</small></h1></div>
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<h2>
<span class="title-namespace">AST.</span><span class=" title-type">If</span>
<!-- if oneOf is set, then type is ignored -->
<span class="type">object</span>
</h2>
<div class="static-markdown"><p>A model representing an ASL conditional statement. Models the following structures:</p>
<ul>
<li>Simple If statements</li>
</ul>
<pre><code>if a == '00' then
return '00';
end
</code></pre>
<ul>
<li>Nested If blocks</li>
</ul>
<pre><code>if a == '00' then
return '00';
elsif a == '01' then
return '01';
else
return '11';
end
</code></pre></div>
</div>
<div class="row">
<div>
<!-- A simple object -->
<h3 class="type">object</h3>
<table class="table table-hover properties">
<thead>
<tr>
<th class="col-md-4">Properties</th>
<th class="col-md-4">Type</th>
<th class="col-md-4">Description</th>
</tr>
</thead>
<tbody>
<!-- properties -->
<tr id="/properties/_meta" class="property">
<th class="col-md-4">
<a href="#/properties/_meta">_meta</a>
</th>
<td class="col-md-4">
<a href="../Meta_schema.html" class="schema_link">Meta</a>
</td>
<td class="col-md-4">
<div>
See
<a href="../Meta_schema.html" class="schema_link">Meta</a>
for more information.
</div>
</td>
</tr>
<tr id="/properties/_type" class="property">
<th class="col-md-4">
<a href="#/properties/_type">_type</a>
</th>
<td class="col-md-4">
</td>
<td class="col-md-4">
<dl>
<dt>Enum</dt>
<dd>
<code>AST.If</code>
</dd>
</dl>
</td>
</tr>
<tr id="/properties/condition" class="property">
<th class="col-md-4">
<a href="#/properties/condition">condition<sup>&loz;</sup></a>
</th>
<td class="col-md-4">
<a href="../Traits/HasCondition_schema.html#/definitions/condition" class="schema_link">Traits.HasCondition</a>
</td>
<td class="col-md-4">
<div><p>The condition determining the branch to take.</p></div>
<div>
See
<a href="../Traits/HasCondition_schema.html#/definitions/condition" class="schema_link">definitions.condition</a> in
<a href="../Traits/HasCondition_schema.html#/definitions/condition" class="schema_link">Traits.HasCondition</a>
for more information.
</div>
</td>
</tr>
<tr id="/properties/else_clause" class="property">
<th class="col-md-4">
<a href="#/properties/else_clause">else_clause</a>
</th>
<td class="col-md-4">
<div><span class="type Xof">oneOf</span> [</div>
<div class="items-oneOf">
<a href="StatementBlock_schema.html" class="schema_link">StatementBlock</a>
</div>
<div class="items-oneOf">
null
</div>
<div>]</div>
</td>
<td class="col-md-4">
<div><p>The clause to execute if the condition is not satisfied.</p></div>
<div>
<!-- Can be one of following objects -->
<div class="item-type">
<span><span class="type Xof">oneOf</span> <a class="title-type" href="StatementBlock_schema.html">StatementBlock</a></span>
</div>
<div class="item-type">
<!-- type is a null -->
<span class="type"><span class="Xof">oneOf</span> null</span>
</div>
</div>
<div>
<b>Default</b>
<pre class="schema-json"><code class="language-json">null</code></pre>
</div>
</td>
</tr>
<tr id="/properties/if_clause" class="property">
<th class="col-md-4">
<a href="#/properties/if_clause">if_clause<sup>&loz;</sup></a>
</th>
<td class="col-md-4">
<a href="StatementBlock_schema.html" class="schema_link">StatementBlock</a>
</td>
<td class="col-md-4">
<div><p>The clause to execute if the condition is satisfied.</p></div>
<div>
See
<a href="StatementBlock_schema.html" class="schema_link">StatementBlock</a>
for more information.
</div>
</td>
</tr>
<!-- patternProperties -->
<!-- object property attributes -->
<tr>
<td colspan="3">
<dl>
<dt>Additional Properties</dt>
<dd>Not Allowed</dd>
</dl>
</td>
</tr>
<tr>
<td colspan="3">
<dl>
<dt>&loz; Required</dt>
<dd>Properties marked with &loz; are required properties.</dd>
</dl>
</td>
</tr>
</tbody>
</table>
<!-- array, and it has described items -->
</div>
<h5>Examples</h5>
<div>
<pre class="schema-json"><code class="language-json">{
&#34;_type&#34;: &#34;AST.If&#34;,
&#34;condition&#34;: {
&#34;_type&#34;: &#34;AST.BinaryOp&#34;,
&#34;left&#34;: {
&#34;_type&#34;: &#34;AST.Identifier&#34;,
&#34;value&#34;: &#34;a&#34;
},
&#34;op&#34;: &#34;==&#34;,
&#34;right&#34;: {
&#34;_type&#34;: &#34;Values.Value&#34;,
&#34;value&#34;: &#34;&#39;00&#39;&#34;
}
},
&#34;if_clause&#34;: {
&#34;_type&#34;: &#34;AST.StatementBlock&#34;,
&#34;statements&#34;: [
{
&#34;_type&#34;: &#34;AST.Return&#34;,
&#34;val&#34;: {
&#34;_type&#34;: &#34;Values.Value&#34;,
&#34;value&#34;: &#34;&#39;00&#39;&#34;
}
}
]
}
}</code></pre>
<pre class="schema-json"><code class="language-json">{
&#34;_type&#34;: &#34;AST.If&#34;,
&#34;condition&#34;: {
&#34;_type&#34;: &#34;AST.BinaryOp&#34;,
&#34;left&#34;: {
&#34;_type&#34;: &#34;AST.Identifier&#34;,
&#34;value&#34;: &#34;a&#34;
},
&#34;op&#34;: &#34;==&#34;,
&#34;right&#34;: {
&#34;_type&#34;: &#34;Values.Value&#34;,
&#34;value&#34;: &#34;&#39;00&#39;&#34;
}
},
&#34;if_clause&#34;: {
&#34;_type&#34;: &#34;AST.StatementBlock&#34;,
&#34;statements&#34;: [
{
&#34;_type&#34;: &#34;AST.Return&#34;,
&#34;val&#34;: {
&#34;_type&#34;: &#34;Values.Value&#34;,
&#34;value&#34;: &#34;&#39;00&#39;&#34;
}
}
]
},
&#34;else_clause&#34;: {
&#34;_type&#34;: &#34;AST.StatementBlock&#34;,
&#34;statements&#34;: [
{
&#34;_type&#34;: &#34;AST.If&#34;,
&#34;condition&#34;: {
&#34;_type&#34;: &#34;AST.BinaryOp&#34;,
&#34;left&#34;: {
&#34;_type&#34;: &#34;AST.Identifier&#34;,
&#34;value&#34;: &#34;a&#34;
},
&#34;op&#34;: &#34;==&#34;,
&#34;right&#34;: {
&#34;_type&#34;: &#34;Values.Value&#34;,
&#34;value&#34;: &#34;&#39;01&#39;&#34;
}
},
&#34;if_clause&#34;: {
&#34;_type&#34;: &#34;AST.StatementBlock&#34;,
&#34;statements&#34;: [
{
&#34;_type&#34;: &#34;AST.Return&#34;,
&#34;val&#34;: {
&#34;_type&#34;: &#34;Values.Value&#34;,
&#34;value&#34;: &#34;&#39;01&#39;&#34;
}
}
]
},
&#34;else_clause&#34;: {
&#34;_type&#34;: &#34;AST.StatementBlock&#34;,
&#34;statements&#34;: [
{
&#34;_type&#34;: &#34;AST.Return&#34;,
&#34;val&#34;: {
&#34;_type&#34;: &#34;Values.Value&#34;,
&#34;value&#34;: &#34;&#39;11&#39;&#34;
}
}
]
}
}
]
}
}</code></pre>
</div>
</div>
<div class="row schema">
<h3>Schema <small><a href="http://json-schema.org/draft-04/schema#">http://json-schema.org/draft-04/schema#</a></small></h3>
<pre class="schema-json"><code class="language-json">{
"title": "If Block",
"info": [
"A model representing an ASL conditional statement. Models the following structures:",
[
"* Simple If statements",
"```",
"if a == '00' then",
" return '00';",
"end",
"```",
"* Nested If blocks",
"```",
"if a == '00' then",
" return '00';",
"elsif a == '01' then",
" return '01';",
"else",
" return '11';",
"end",
"```"
]
],
"examples": [
{
"_type": "AST.If",
"condition": {
"_type": "AST.BinaryOp",
"left": {
"_type": "AST.Identifier",
"value": "a"
},
"op": "==",
"right": {
"_type": "Values.Value",
"value": "'00'"
}
},
"if_clause": {
"_type": "AST.StatementBlock",
"statements": [
{
"_type": "AST.Return",
"val": {
"_type": "Values.Value",
"value": "'00'"
}
}
]
}
},
{
"_type": "AST.If",
"condition": {
"_type": "AST.BinaryOp",
"left": {
"_type": "AST.Identifier",
"value": "a"
},
"op": "==",
"right": {
"_type": "Values.Value",
"value": "'00'"
}
},
"if_clause": {
"_type": "AST.StatementBlock",
"statements": [
{
"_type": "AST.Return",
"val": {
"_type": "Values.Value",
"value": "'00'"
}
}
]
},
"else_clause": {
"_type": "AST.StatementBlock",
"statements": [
{
"_type": "AST.If",
"condition": {
"_type": "AST.BinaryOp",
"left": {
"_type": "AST.Identifier",
"value": "a"
},
"op": "==",
"right": {
"_type": "Values.Value",
"value": "'01'"
}
},
"if_clause": {
"_type": "AST.StatementBlock",
"statements": [
{
"_type": "AST.Return",
"val": {
"_type": "Values.Value",
"value": "'01'"
}
}
]
},
"else_clause": {
"_type": "AST.StatementBlock",
"statements": [
{
"_type": "AST.Return",
"val": {
"_type": "Values.Value",
"value": "'11'"
}
}
]
}
}
]
}
}
],
"properties": {
"_meta": {
"$ref": "../Meta.json"
},
"_type": {
"enum": [
"AST.If"
]
},
"condition": {
"info": [
"The condition determining the branch to take."
],
"$ref": "../Traits/HasCondition.json#/definitions/condition"
},
"if_clause": {
"info": [
"The clause to execute if the condition is satisfied."
],
"$ref": "StatementBlock.json"
},
"else_clause": {
"info": [
"The clause to execute if the condition is not satisfied."
],
"default": null,
"oneOf": [
{
"$ref": "StatementBlock.json"
},
{
"type": "null"
}
]
}
},
"required": [
"condition",
"if_clause"
],
"type": "object",
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-04/schema#"
}</code></pre>
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