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Merged
alecthomas merged 1 commit into from
Jul 11, 2024
Merged

Add JSONata Lexer #983

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83 changes: 83 additions & 0 deletions lexers/embedded/jsonata.xml
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<lexer>
<config>
<name>JSONata</name>
<alias>jsonata</alias>
<filename>*.jsonata</filename>
<dot_all>true</dot_all>
</config>
<rules>
<state name="root">
<rule pattern="/\*.*?\*/">
<token type="CommentMultiline"/>
</rule>
<rule pattern="[{}()\[\]:;,\.=]">
<token type="Punctuation"/>
</rule>
<rule pattern="\.\."> // Spread operator
<token type="Operator"/>
</rule>
<rule pattern="\^(?=\()"> // Sort operator
<token type="Operator"/>
</rule>
<rule pattern="\*\*|\*(?=\.)|\*"> // Descendant | Wildcard | Multiplication
<token type="Operator"/>
</rule>
<rule pattern="\/(?!\*)"> // Division
<token type="Operator"/>
</rule>
<rule pattern="[&lt;&gt;!]=?"> // Comparison operators
<token type="Operator"/>
</rule>
<rule pattern="~>">
<token type="Operator"/>
</rule>
<rule pattern="\b(and|or|in)\b">
<token type="Operator"/>
</rule>
<rule pattern="[%@#&amp;?]|\+(?!\d)|\-(?!\d)">
<token type="Operator"/>
</rule>
<rule pattern="\$[a-zA-Z0-9_]*(?![\w\(])">
<token type="NameVariable"/>
</rule>
<rule pattern="\$\w*(?=\()">
<token type="NameFunction"/>
</rule>
<rule pattern="\s+">
<token type="Text"/>
</rule>
<rule pattern="(true|false)\b">
<token type="KeywordConstant"/>
</rule>
<rule pattern="\b(function)\b">
<token type="Keyword"/>
</rule>
<rule pattern="(\+|-)?(0|[1-9]\d*)(\.\d+[eE](\+|-)?\d+|[eE](\+|-)?\d+|\.\d+)">
<token type="LiteralNumberFloat"/>
</rule>
<rule pattern="(\+|-)?(0|[1-9]\d*)">
<token type="LiteralNumberInteger"/>
</rule>
<!-- NOTE: This expression matches all object keys (NameTags), which are essentially strings with double quotes
that should only be captured on the left side of a colon (:) within a JSON-like object.
Therefore, this expression must preceed the one for all LiteralStringDouble -->
<rule pattern="&#34;(\\.|[^\\&#34;\r\n])*&#34;(?=\s*:)">
<token type="NameTag"/>
</rule>
<rule pattern="&#34;(\\\\|\\&#34;|[^&#34;])*&#34;">
<token type="LiteralStringDouble"/>
</rule>
<rule pattern="&#39;(\\|\\&#39;|[^&#39;])*&#39;">
<token type="LiteralStringSingle"/>
</rule>
<rule pattern="`.*`">
<token type="LiteralStringBacktick"/>
</rule>
<!-- NOTE: This expression matches everything remaining, which should be only JSONata names.
Therefore, it has been left as last intentionally -->
<rule pattern="[a-zA-Z0-9_]*">
<token type="Name"/>
</rule>
</state>
</rules>
</lexer>
38 changes: 38 additions & 0 deletions lexers/testdata/jsonata.actual
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(
$.a.b.c;

/* Example json input */
$jsonInput := {
"firstName": "JSONata",
"lastName": "User",
"age": 25,
"skills": ["programming", "cooking"],
"over 18": true,
"coordinates": { "latitude": 51.509865, "longitude": -0.118092 }
};

/* Example function definition */
$getGreeting := function($firstName, $lastName) {
"Hello, " & $firstName & " " & $lastName
};

$isAdult := $jsonInput.`over 18`;

/* Example json transformation */
$jsonInput.{
"fullName": $join([firstName, lastName], " "),
"greeting": $getGreeting(firstName, lastName),
"skills": $append(skills, "jsonata"),
"isAdult": $isAdult
}

$spreadOp = [1..5];
$sortOperator := Account.Order^(>Price, <Quantity);
$descendants := **.Postcode;
$math:= 10 / 5 * 2 + 4 - 2 % 2;
$conditions := 20 > 10 and 10 > 20 ? 20 = 20 or 20 != 10 : 10 in [1,10,20];
$chainOperator := " trim " ~> $trim();
$sum := +10 + -5 - +3 + $x / $y;
$multiplyVars := $a*$b * $c;
$wildcard := $.wild.*.card;
)
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