70 lines
2.5 KiB
JavaScript
70 lines
2.5 KiB
JavaScript
module.exports = grammar({
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name: "cmake",
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rules: {
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source_file: ($) => repeat($._command_invocation),
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escape_sequence: ($) => choice($._escape_identity, $._escape_encoded, $._escape_semicolon),
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_escape_identity: ($) => /\\[^A-Za-z0-9;]/,
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_escape_encoded: ($) => choice("\\t", "\\r", "\\n"),
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_escape_semicolon: ($) => ";",
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variable: ($) => prec.left(repeat1(choice(/[a-zA-Z0-9/_.+-]/, $.escape_sequence))),
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variable_ref: ($) => choice($.normal_var, $.env_var, $.cache_var),
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normal_var: ($) => seq("${", $.variable, "}"),
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env_var: ($) => seq("$ENV", "{", $.variable, "}"),
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cache_var: ($) => seq("$CACHE", "{", $.variable, "}"),
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argument: ($) => choice($.bracket_argument, $.quoted_argument, $.unquoted_argument),
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bracket_argument: ($) => seq($._bracket_open, optional($.bracket_content), $._bracket_close),
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_bracket_open: (_) => seq("[", repeat("="), "["),
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bracket_content: (_) => repeat1(/[^\]]/),
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_bracket_close: (_) => seq("]", repeat("="), "]"),
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quoted_argument: ($) => seq('"', optional($.quoted_element), '"'),
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quoted_element: ($) => repeat1(choice($.variable_ref, /[^\\"]/, $.escape_sequence, seq("\\", newline()))),
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unquoted_argument: ($) => repeat1(choice($.variable_ref, /[^ ()#\"\\]/, $.escape_sequence)),
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foreach_command: ($) => command($.foreach, args(choice($.argument, "IN", "RANGE", "ZIP_LISTS", "LISTS", "ITEMS"))),
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endforeach_command: ($) => command($.endforeach, optional($.argument)),
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foreach_loop: ($) => seq($.foreach_command, repeat($._command_invocation), $.endforeach_command),
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normal_command: ($) => command($.identifier, optional(args($.argument))),
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_command_invocation: ($) => choice($.normal_command, $.foreach_loop),
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...commandNames("foreach", "endforeach"),
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identifier: ($) => /[A-Za-z_][A-Za-z0-9_]*/,
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integer: ($) => /[+-]*\d+/,
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},
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});
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function iregex(s) {
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return new RegExp(Array.from(s).reduce((acc, value) => acc + `[${value.toLowerCase()}${value.toUpperCase()}]`, ""));
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}
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function commandName(name) {
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return { [name]: (_) => iregex(name) };
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}
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function commandNames(...names) {
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return Object.assign({}, ...names.map(commandName));
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}
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function args(rule) {
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return seq(rule, repeat(prec.left(seq(repeat1(seperation()), optional(rule)))));
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}
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function command(name_rule, arg_rule) {
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return seq(name_rule, "(", repeat(seperation()), arg_rule, ")");
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}
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function seperation() {
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return choice(space(), newline());
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}
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function space() {
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return /[ \t]+/;
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}
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function newline() {
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return /\n+/;
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}
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