35 lines
816 B
JavaScript
35 lines
816 B
JavaScript
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/**
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* @see {@link Core Schema|https://yaml.org/spec/1.2/spec.html#schema/core}
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*/
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/// <reference types="tree-sitter-cli/dsl" />
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module.exports = grammar({
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name: "core_schema",
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extras: _ => [],
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rules: {
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scalar: $ => choice($.null, $.bool, $.int, $.float),
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null: _ => token(choice("~", "null", "Null", "NULL")),
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bool: _ => token(choice("true", "True", "TRUE", "false", "False", "FALSE")),
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int: _ => token(choice(
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/[-+]?[0-9]+/, // base 10
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/0o[0-7]+/, // base 8
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/0x[0-9a-fA-F]+/, // base 12
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)),
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float: _ => token(choice(
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/[-+]?(\.\d+|\d+(\.\d*)?)([eE][-+]?\d+)?/, // number
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seq(
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optional(choice("-", "+")),
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choice(".inf", ".Inf", ".INF")
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), // infinity
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choice(".nan", ".NaN", ".NAN"), // not a number
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)),
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},
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});
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