700 lines
12 KiB
JavaScript
700 lines
12 KiB
JavaScript
/**
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* @param {string} value
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* @returns {RegExp}
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* */
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/**
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* @param {RegExp | string } re
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* @returns {string}
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*/
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function source(re) {
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if (!re) return null;
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if (typeof re === "string") return re;
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return re.source;
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}
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/**
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* @param {...(RegExp | string) } args
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* @returns {string}
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*/
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function concat(...args) {
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const joined = args.map((x) => source(x)).join("");
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return joined;
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}
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/**
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* Any of the passed expresssions may match
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*
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* Creates a huge this | this | that | that match
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* @param {(RegExp | string)[] } args
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* @returns {string}
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*/
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function either(...args) {
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const joined = '(' + args.map((x) => source(x)).join("|") + ")";
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return joined;
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}
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/*
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Language: SQL
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Website: https://en.wikipedia.org/wiki/SQL
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Category: common, database
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*/
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function sql(hljs) {
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const COMMENT_MODE = hljs.COMMENT('--', '$');
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const STRING = {
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className: 'string',
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variants: [
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{
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begin: /'/,
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end: /'/,
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contains: [
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{begin: /''/ }
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]
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}
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]
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};
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const QUOTED_IDENTIFIER = {
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begin: /"/,
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end: /"/,
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contains: [ { begin: /""/ } ]
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};
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const LITERALS = [
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"true",
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"false",
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// Not sure it's correct to call NULL literal, and clauses like IS [NOT] NULL look strange that way.
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// "null",
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"unknown"
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];
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const MULTI_WORD_TYPES = [
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"double precision",
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"large object",
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"with timezone",
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"without timezone"
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];
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const TYPES = [
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'bigint',
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'binary',
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'blob',
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'boolean',
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'char',
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'character',
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'clob',
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'date',
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'dec',
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'decfloat',
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'decimal',
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'float',
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'int',
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'integer',
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'interval',
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'nchar',
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'nclob',
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'national',
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'numeric',
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'real',
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'row',
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'smallint',
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'time',
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'timestamp',
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'varchar',
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'varying', // modifier (character varying)
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'varbinary'
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];
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const NON_RESERVED_WORDS = [
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"add",
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"asc",
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"collation",
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"desc",
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"final",
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"first",
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"last",
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"view"
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];
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// https://jakewheat.github.io/sql-overview/sql-2016-foundation-grammar.html#reserved-word
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const RESERVED_WORDS = [
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"abs",
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"acos",
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"all",
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"allocate",
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"alter",
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"and",
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"any",
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"are",
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"array",
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"array_agg",
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"array_max_cardinality",
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"as",
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"asensitive",
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"asin",
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"asymmetric",
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"at",
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"atan",
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"atomic",
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"authorization",
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"avg",
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"begin",
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"begin_frame",
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"begin_partition",
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"between",
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"bigint",
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"binary",
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"blob",
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"boolean",
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"both",
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"by",
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"call",
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"called",
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"cardinality",
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"cascaded",
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"case",
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"cast",
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"ceil",
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"ceiling",
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"char",
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"char_length",
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"character",
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"character_length",
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"check",
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"classifier",
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"clob",
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"close",
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"coalesce",
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"collate",
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"collect",
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"column",
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"commit",
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"condition",
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"connect",
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"constraint",
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"contains",
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"convert",
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"copy",
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"corr",
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"corresponding",
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"cos",
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"cosh",
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"count",
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"covar_pop",
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"covar_samp",
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"create",
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"cross",
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"cube",
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"cume_dist",
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"current",
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"current_catalog",
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"current_date",
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"current_default_transform_group",
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"current_path",
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"current_role",
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"current_row",
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"current_schema",
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"current_time",
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"current_timestamp",
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"current_path",
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"current_role",
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"current_transform_group_for_type",
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"current_user",
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"cursor",
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"cycle",
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"date",
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"day",
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"deallocate",
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"dec",
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"decimal",
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"decfloat",
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"declare",
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"default",
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"define",
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"delete",
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"dense_rank",
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"deref",
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"describe",
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"deterministic",
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"disconnect",
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"distinct",
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"double",
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"drop",
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"dynamic",
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"each",
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"element",
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"else",
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"empty",
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"end",
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"end_frame",
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"end_partition",
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"end-exec",
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"equals",
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"escape",
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"every",
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"except",
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"exec",
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"execute",
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"exists",
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"exp",
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"external",
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"extract",
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"false",
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"fetch",
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"filter",
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"first_value",
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"float",
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"floor",
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"for",
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"foreign",
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"frame_row",
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"free",
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"from",
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"full",
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"function",
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"fusion",
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"get",
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"global",
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"grant",
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"group",
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"grouping",
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"groups",
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"having",
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"hold",
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"hour",
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"identity",
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"in",
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"indicator",
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"initial",
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"inner",
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"inout",
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"insensitive",
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"insert",
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"int",
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"integer",
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"intersect",
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"intersection",
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"interval",
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"into",
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"is",
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"join",
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"json_array",
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"json_arrayagg",
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"json_exists",
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"json_object",
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"json_objectagg",
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"json_query",
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"json_table",
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"json_table_primitive",
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"json_value",
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"lag",
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"language",
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"large",
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"last_value",
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"lateral",
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"lead",
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"leading",
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"left",
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"like",
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"like_regex",
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"listagg",
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"ln",
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"local",
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"localtime",
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"localtimestamp",
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"log",
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"log10",
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"lower",
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"match",
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"match_number",
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"match_recognize",
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"matches",
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"max",
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"member",
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"merge",
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"method",
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"min",
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"minute",
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"mod",
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"modifies",
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"module",
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"month",
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"multiset",
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"national",
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"natural",
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"nchar",
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"nclob",
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"new",
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"no",
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"none",
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"normalize",
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"not",
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"nth_value",
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"ntile",
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"null",
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"nullif",
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"numeric",
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"octet_length",
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"occurrences_regex",
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"of",
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"offset",
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"old",
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"omit",
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"on",
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"one",
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"only",
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"open",
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"or",
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"order",
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"out",
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"outer",
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"over",
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"overlaps",
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"overlay",
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"parameter",
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"partition",
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"pattern",
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"per",
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"percent",
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"percent_rank",
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"percentile_cont",
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"percentile_disc",
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"period",
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"portion",
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"position",
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"position_regex",
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"power",
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"precedes",
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"precision",
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"prepare",
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"primary",
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"procedure",
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"ptf",
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"range",
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"rank",
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"reads",
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"real",
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"recursive",
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"ref",
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"references",
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"referencing",
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"regr_avgx",
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"regr_avgy",
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"regr_count",
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"regr_intercept",
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"regr_r2",
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"regr_slope",
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"regr_sxx",
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"regr_sxy",
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"regr_syy",
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"release",
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"result",
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"return",
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"returns",
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"revoke",
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"right",
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"rollback",
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"rollup",
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"row",
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"row_number",
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"rows",
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"running",
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"savepoint",
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"scope",
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"scroll",
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"search",
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"second",
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"seek",
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"select",
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"sensitive",
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"session_user",
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"set",
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"show",
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"similar",
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"sin",
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"sinh",
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"skip",
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"smallint",
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"some",
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"specific",
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"specifictype",
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"sql",
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"sqlexception",
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"sqlstate",
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"sqlwarning",
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"sqrt",
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"start",
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"static",
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"stddev_pop",
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"stddev_samp",
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"submultiset",
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"subset",
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"substring",
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"substring_regex",
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"succeeds",
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"sum",
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"symmetric",
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"system",
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"system_time",
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"system_user",
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"table",
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"tablesample",
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"tan",
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"tanh",
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"then",
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"time",
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"timestamp",
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"timezone_hour",
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"timezone_minute",
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"to",
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"trailing",
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"translate",
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"translate_regex",
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"translation",
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"treat",
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"trigger",
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"trim",
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"trim_array",
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"true",
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"truncate",
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"uescape",
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"union",
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"unique",
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"unknown",
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"unnest",
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"update ",
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"upper",
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"user",
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"using",
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"value",
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"values",
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"value_of",
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"var_pop",
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"var_samp",
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"varbinary",
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"varchar",
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"varying",
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"versioning",
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"when",
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"whenever",
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"where",
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"width_bucket",
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"window",
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"with",
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"within",
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"without",
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"year",
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];
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// these are reserved words we have identified to be functions
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// and should only be highlighted in a dispatch-like context
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// ie, array_agg(...), etc.
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const RESERVED_FUNCTIONS = [
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"abs",
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"acos",
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"array_agg",
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"asin",
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"atan",
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"avg",
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"cast",
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"ceil",
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"ceiling",
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"coalesce",
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"corr",
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"cos",
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"cosh",
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"count",
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"covar_pop",
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"covar_samp",
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"cume_dist",
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"dense_rank",
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"deref",
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"element",
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"exp",
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"extract",
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"first_value",
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"floor",
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"json_array",
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"json_arrayagg",
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"json_exists",
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"json_object",
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"json_objectagg",
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"json_query",
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"json_table",
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"json_table_primitive",
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"json_value",
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"lag",
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"last_value",
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"lead",
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"listagg",
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"ln",
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"log",
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"log10",
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"lower",
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"max",
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"min",
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"mod",
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"nth_value",
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"ntile",
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"nullif",
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"percent_rank",
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"percentile_cont",
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"percentile_disc",
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"position",
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"position_regex",
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"power",
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"rank",
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"regr_avgx",
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"regr_avgy",
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"regr_count",
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"regr_intercept",
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"regr_r2",
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"regr_slope",
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"regr_sxx",
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"regr_sxy",
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"regr_syy",
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"row_number",
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"sin",
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"sinh",
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"sqrt",
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"stddev_pop",
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"stddev_samp",
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"substring",
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"substring_regex",
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"sum",
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"tan",
|
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"tanh",
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"translate",
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"translate_regex",
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"treat",
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"trim",
|
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"trim_array",
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"unnest",
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"upper",
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"value_of",
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"var_pop",
|
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"var_samp",
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"width_bucket",
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];
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|
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// these functions can
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const POSSIBLE_WITHOUT_PARENS = [
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"current_catalog",
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"current_date",
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"current_default_transform_group",
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"current_path",
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"current_role",
|
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"current_schema",
|
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"current_transform_group_for_type",
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"current_user",
|
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"session_user",
|
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"system_time",
|
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"system_user",
|
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"current_time",
|
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"localtime",
|
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"current_timestamp",
|
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"localtimestamp"
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];
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|
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// those exist to boost relevance making these very
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// "SQL like" keyword combos worth +1 extra relevance
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const COMBOS = [
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"create table",
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"insert into",
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"primary key",
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"foreign key",
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"not null",
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"alter table",
|
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"add constraint",
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"grouping sets",
|
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"on overflow",
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"character set",
|
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"respect nulls",
|
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"ignore nulls",
|
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"nulls first",
|
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"nulls last",
|
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"depth first",
|
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"breadth first"
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];
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|
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const FUNCTIONS = RESERVED_FUNCTIONS;
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|
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const KEYWORDS = [...RESERVED_WORDS, ...NON_RESERVED_WORDS].filter((keyword) => {
|
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return !RESERVED_FUNCTIONS.includes(keyword);
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});
|
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|
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const VARIABLE = {
|
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className: "variable",
|
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begin: /@[a-z0-9]+/,
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};
|
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|
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const OPERATOR = {
|
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className: "operator",
|
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begin: /[-+*/=%^~]|&&?|\|\|?|!=?|<(?:=>?|<|>)?|>[>=]?/,
|
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relevance: 0,
|
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};
|
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|
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const FUNCTION_CALL = {
|
|
begin: concat(/\b/, either(...FUNCTIONS), /\s*\(/),
|
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keywords: {
|
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built_in: FUNCTIONS
|
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}
|
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};
|
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|
|
// keywords with less than 3 letters are reduced in relevancy
|
|
function reduceRelevancy(list, {exceptions, when} = {}) {
|
|
const qualifyFn = when;
|
|
exceptions = exceptions || [];
|
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return list.map((item) => {
|
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if (item.match(/\|\d+$/) || exceptions.includes(item)) {
|
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return item;
|
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} else if (qualifyFn(item)) {
|
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return `${item}|0`;
|
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} else {
|
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return item;
|
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}
|
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});
|
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}
|
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|
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return {
|
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name: 'SQL',
|
|
case_insensitive: true,
|
|
// does not include {} or HTML tags `</`
|
|
illegal: /[{}]|<\//,
|
|
keywords: {
|
|
$pattern: /\b[\w\.]+/,
|
|
keyword:
|
|
reduceRelevancy(KEYWORDS, { when: (x) => x.length < 3 }),
|
|
literal: LITERALS,
|
|
type: TYPES,
|
|
built_in: POSSIBLE_WITHOUT_PARENS
|
|
},
|
|
contains: [
|
|
{
|
|
begin: either(...COMBOS),
|
|
keywords: {
|
|
$pattern: /[\w\.]+/,
|
|
keyword: KEYWORDS.concat(COMBOS),
|
|
literal: LITERALS,
|
|
type: TYPES
|
|
},
|
|
},
|
|
{
|
|
className: "type",
|
|
begin: either(...MULTI_WORD_TYPES)
|
|
},
|
|
FUNCTION_CALL,
|
|
VARIABLE,
|
|
STRING,
|
|
QUOTED_IDENTIFIER,
|
|
hljs.C_NUMBER_MODE,
|
|
hljs.C_BLOCK_COMMENT_MODE,
|
|
COMMENT_MODE,
|
|
OPERATOR
|
|
]
|
|
};
|
|
}
|
|
|
|
module.exports = sql;
|