mirror of
https://github.com/pnx/tree-sitter-dotenv
synced 2026-10-15 00:06:46 +02:00
136 lines
2.9 KiB
JavaScript
136 lines
2.9 KiB
JavaScript
/// <reference types="tree-sitter-cli/dsl" />
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// @ts-check
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//
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const integer_decimal = /(\-)?[1-9]\d*/
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const integer_hexadecimal = /0[xX][0-9a-fA-F]+/
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const float_fractional_part = /\.\d+/
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module.exports = grammar({
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name: "dotenv",
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word: $ => $.identifier,
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externals: $ => [
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$._end_of_assignment,
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],
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rules: {
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document: $ => repeat(choice(
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$.comment,
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$.assignment,
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)),
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assignment: $ => choice(
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seq(
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field("key", choice(
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$.identifier,
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alias("export", $.identifier),
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)),
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"=",
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optional(field("value", $._value)),
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$._end_of_assignment,
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),
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prec(1, seq(
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"export",
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field("key", choice(
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$.identifier,
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alias("export", $.identifier),
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)),
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"=",
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optional(field("value", $._value)),
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$._end_of_assignment,
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)),
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),
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comment: _ => /\#[^\n]*/,
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identifier: _ => /[A-Za-z_][A-Za-z0-9_]*/,
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variable: $ => choice(
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seq('$', $.identifier),
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$._braced_variable,
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),
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_braced_variable: $ => seq('$', '{', $.identifier, '}'),
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_value: $ => choice(
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$.string,
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$.number,
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$.boolean,
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$.variable,
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$.value,
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),
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// Strings
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string: $ => choice(
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$._string,
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$._literal_string,
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$._unquoted_string,
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),
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_unquoted_string: $ => choice(
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alias($._unquoted_content, $.string_content),
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seq(
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choice(
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alias($.value, $.string_content),
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alias($.boolean, $.string_content),
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alias($.decimal, $.string_content),
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alias($.hexadecimal, $.string_content),
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alias($.float, $.string_content),
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alias($._unquoted_content, $.string_content),
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),
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alias($._braced_variable, $.variable),
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optional(choice(
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alias($.value, $.string_content),
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alias($._unquoted_content, $.string_content),
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)),
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),
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),
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_unquoted_content: _ => token(choice(
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/[^\#\s\"\'\$]+(?:[ \t]+[^\#\s\"\'\$]+)+/,
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seq(
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/[^\#\s\"\'\$]+(?:[ \t]+[^\#\s\"\'\$]+)*/,
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repeat1(seq(
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/\$[A-Za-z_][A-Za-z0-9_]*/,
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optional(/(?:[ \t]*[^\#\s\"\'\$]+)+/),
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)),
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),
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)),
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_literal_string: $ => seq(
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"'",
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optional(alias(/[^']+/, $.string_content)),
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"'",
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),
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_string: $ => seq(
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'"',
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optional(repeat(choice(
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alias(/[^"\$]+/, $.string_content),
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$.variable
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))),
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'"',
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),
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// Numbers
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number: $ => choice(
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$.integer,
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$.float,
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),
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integer: $ => choice(
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$.decimal,
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$.hexadecimal
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),
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decimal: _ => integer_decimal,
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hexadecimal: _ => integer_hexadecimal,
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float: _ => token(seq(integer_decimal, float_fractional_part)),
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boolean: _ => token(choice('true', 'false')),
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value: _ => /[^\#\s\"\'\$]+/,
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},
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});
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