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Basic lexer for Microsoft Power Query M (#462)
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package p | ||
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import ( | ||
. "github.com/alecthomas/chroma" // nolint | ||
"github.com/alecthomas/chroma/lexers/internal" | ||
) | ||
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// PowerQuery lexer. | ||
var PowerQuery = internal.Register(MustNewLazyLexer( | ||
&Config{ | ||
Name: "PowerQuery", | ||
Aliases: []string{"powerquery", "pq"}, | ||
Filenames: []string{"*.pq"}, | ||
MimeTypes: []string{"text/x-powerquery"}, | ||
DotAll: true, | ||
CaseInsensitive: true, | ||
}, | ||
powerqueryRules, | ||
)) | ||
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func powerqueryRules() Rules { | ||
return Rules{ | ||
"root": { | ||
{`\s+`, Text, nil}, | ||
{`//.*?\n`, CommentSingle, nil}, | ||
{`/\*.*?\*/`, CommentMultiline, nil}, | ||
{`"(\\\\|\\"|[^"])*"`, LiteralString, nil}, | ||
{`(and|as|each|else|error|false|if|in|is|let|meta|not|null|or|otherwise|section|shared|then|true|try|type)\b`, Keyword, nil}, | ||
{`(#binary|#date|#datetime|#datetimezone|#duration|#infinity|#nan|#sections|#shared|#table|#time)\b`, KeywordType, nil}, | ||
{`(([a-zA-Z]|_)[\w|._]*|#"[^"]+")`, Name, nil}, | ||
{`0[xX][0-9a-fA-F][0-9a-fA-F_]*[lL]?`, LiteralNumberHex, nil}, | ||
{`([0-9]+\.[0-9]+|\.[0-9]+)([eE][0-9]+)?`, LiteralNumberFloat, nil}, | ||
{`[0-9]+`, LiteralNumberInteger, nil}, | ||
{`[\(\)\[\]\{\}]`, Punctuation, nil}, | ||
{`\.\.|\.\.\.|=>|<=|>=|<>|[@!?,;=<>\+\-\*\/&]`, Operator, nil}, | ||
}, | ||
} | ||
} |
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let | ||
GetLabel = (subject as text) as nullable table => | ||
let | ||
// Request Ntriples from the LDF Service | ||
Options = [Headers = [#"Accept"="text/csv"]], | ||
FixedSubject = if Text.At(subject,0) <> "<" then Text.Combine({"<",subject,">"}) else subject, | ||
Query = Text.Combine({"SELECT ?label WHERE { | ||
SERVICE wikibase:label { | ||
bd:serviceParam wikibase:language ""en"" . | ||
",FixedSubject," <http://www.w3.org/2000/01/rdf-schema#label> ?label | ||
} | ||
}"}), | ||
/* this is a multiline comment, see https://docs.microsoft.com/en-us/powerquery-m/comments | ||
*/ | ||
url = Text.Combine({"https://query.wikidata.org/sparql?",Uri.BuildQueryString([query=Query])}), | ||
data = Csv.Document(Web.Contents(url,Options)), | ||
promoted = Table.PromoteHeaders(data, [PromoteAllScalars=true]) | ||
in | ||
promoted | ||
in | ||
GetLabel |
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[ | ||
{"type":"Keyword","value":"let"}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"Name","value":"GetLabel"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Punctuation","value":"("}, | ||
{"type":"Name","value":"subject"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Keyword","value":"as"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"text"}, | ||
{"type":"Punctuation","value":")"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Keyword","value":"as"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"nullable"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"table"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"=\u003e"}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"Keyword","value":"let"}, | ||
{"type":"Text","value":" \n "}, | ||
{"type":"CommentSingle","value":"// Request Ntriples from the LDF Service\n"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"Options"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Punctuation","value":"["}, | ||
{"type":"Name","value":"Headers"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Punctuation","value":"["}, | ||
{"type":"Name","value":"#\"Accept\""}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"LiteralString","value":"\"text/csv\""}, | ||
{"type":"Punctuation","value":"]]"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"Name","value":"FixedSubject"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Keyword","value":"if"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"Text.At"}, | ||
{"type":"Punctuation","value":"("}, | ||
{"type":"Name","value":"subject"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"LiteralNumberInteger","value":"0"}, | ||
{"type":"Punctuation","value":")"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"\u003c\u003e"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"LiteralString","value":"\"\u003c\""}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Keyword","value":"then"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"Text.Combine"}, | ||
{"type":"Punctuation","value":"({"}, | ||
{"type":"LiteralString","value":"\"\u003c\""}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Name","value":"subject"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"LiteralString","value":"\"\u003e\""}, | ||
{"type":"Punctuation","value":"})"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Keyword","value":"else"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"subject"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"Name","value":"Query"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"Text.Combine"}, | ||
{"type":"Punctuation","value":"({"}, | ||
{"type":"LiteralString","value":"\"SELECT ?label WHERE {\n SERVICE wikibase:label {\n bd:serviceParam wikibase:language \"\"en\"\" .\n \""}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Name","value":"FixedSubject"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"LiteralString","value":"\" \u003chttp://www.w3.org/2000/01/rdf-schema#label\u003e ?label\n }\n }\""}, | ||
{"type":"Punctuation","value":"})"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"CommentMultiline","value":"/* this is a multiline comment, see https://docs.microsoft.com/en-us/powerquery-m/comments\n */"}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"Name","value":"url"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"Text.Combine"}, | ||
{"type":"Punctuation","value":"({"}, | ||
{"type":"LiteralString","value":"\"https://query.wikidata.org/sparql?\""}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Name","value":"Uri.BuildQueryString"}, | ||
{"type":"Punctuation","value":"(["}, | ||
{"type":"Name","value":"query"}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Name","value":"Query"}, | ||
{"type":"Punctuation","value":"])})"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"Name","value":"data"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"Csv.Document"}, | ||
{"type":"Punctuation","value":"("}, | ||
{"type":"Name","value":"Web.Contents"}, | ||
{"type":"Punctuation","value":"("}, | ||
{"type":"Name","value":"url"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Name","value":"Options"}, | ||
{"type":"Punctuation","value":"))"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"Name","value":"promoted"}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Name","value":"Table.PromoteHeaders"}, | ||
{"type":"Punctuation","value":"("}, | ||
{"type":"Name","value":"data"}, | ||
{"type":"Operator","value":","}, | ||
{"type":"Text","value":" "}, | ||
{"type":"Punctuation","value":"["}, | ||
{"type":"Name","value":"PromoteAllScalars"}, | ||
{"type":"Operator","value":"="}, | ||
{"type":"Keyword","value":"true"}, | ||
{"type":"Punctuation","value":"])"}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"Keyword","value":"in"}, | ||
{"type":"Text","value":" \n "}, | ||
{"type":"Name","value":"promoted"}, | ||
{"type":"Text","value":" \n"}, | ||
{"type":"Keyword","value":"in"}, | ||
{"type":"Text","value":"\n "}, | ||
{"type":"Name","value":"GetLabel"}, | ||
{"type":"Text","value":" "} | ||
] |