114 lines
2.9 KiB
Plaintext
114 lines
2.9 KiB
Plaintext
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start = token*
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token
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= argument / select / plural / function
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/ '#' { return { type: 'octothorpe' }; }
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/ str:char+ { return str.join(''); }
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argument = '{' _ arg:id _ '}' {
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return {
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type: 'argument',
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arg: arg
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};
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}
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select = '{' _ arg:id _ ',' _ 'select' _ ',' _ cases:selectCase+ _ '}' {
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return {
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type: 'select',
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arg: arg,
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cases: cases
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};
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}
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plural = '{' _ arg:id _ ',' _ type:('plural'/'selectordinal') _ ',' _ offset:offset? cases:pluralCase+ _ '}' {
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var ls = ((type === 'selectordinal') ? options.ordinal : options.cardinal)
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|| ['zero', 'one', 'two', 'few', 'many', 'other'];
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if (ls && ls.length) cases.forEach(function(c) {
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if (isNaN(c.key) && ls.indexOf(c.key) < 0) throw new Error(
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'Invalid key `' + c.key + '` for argument `' + arg + '`.' +
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' Valid ' + type + ' keys for this locale are `' + ls.join('`, `') +
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'`, and explicit keys like `=0`.');
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});
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return {
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type: type,
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arg: arg,
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offset: offset || 0,
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cases: cases
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};
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}
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function = '{' _ arg:id _ ',' _ key:id _ params:functionParams '}' {
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return {
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type: 'function',
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arg: arg,
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key: key,
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params: params
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};
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}
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id = $([0-9a-zA-Z$_][^ \t\n\r,.+={}]*)
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paramDefault = str:paramcharsDefault+ { return str.join(''); }
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paramStrict = str:paramcharsStrict+ { return str.join(''); }
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selectCase = _ key:id _ tokens:caseTokens { return { key: key, tokens: tokens }; }
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pluralCase = _ key:pluralKey _ tokens:caseTokens { return { key: key, tokens: tokens }; }
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caseTokens = '{' (_ & '{')? tokens:token* _ '}' { return tokens; }
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offset = _ 'offset' _ ':' _ d:digits _ { return d; }
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pluralKey
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= id
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/ '=' d:digits { return d; }
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functionParams
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= p:functionParamsDefault* ! { return options.strictFunctionParams; } { return p; }
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/ p:functionParamsStrict* & { return options.strictFunctionParams; } { return p; }
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functionParamsStrict = _ ',' p:paramStrict { return p; }
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functionParamsDefault = _ ',' _ p:paramDefault _ { return p.replace(/^[ \t\n\r]*|[ \t\n\r]*$/g, ''); }
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doubleapos = "''" { return "'"; }
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inapos = doubleapos / str:[^']+ { return str.join(''); }
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quotedCurly
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= "'{"str:inapos*"'" { return '\u007B'+str.join(''); }
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/ "'}"str:inapos*"'" { return '\u007D'+str.join(''); }
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quotedFunctionParams
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= quotedCurly
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/ "'"
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char
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= [^{}#\\\0-\x08\x0e-\x1f\x7f]
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/ '\\\\' { return '\\'; }
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/ '\\#' { return '#'; }
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/ '\\{' { return '\u007B'; }
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/ '\\}' { return '\u007D'; }
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/ '\\u' h1:hexDigit h2:hexDigit h3:hexDigit h4:hexDigit {
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return String.fromCharCode(parseInt('0x' + h1 + h2 + h3 + h4));
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}
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paramcharsCommon
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= doubleapos
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/ quotedFunctionParams
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paramcharsDefault
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= paramcharsCommon
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/ str:[^',}]+ { return str.join(''); }
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paramcharsStrict
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= paramcharsCommon
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/ str:[^'}]+ { return str.join(''); }
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digits = $([0-9]+)
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hexDigit = [0-9a-fA-F]
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_ = $([ \t\n\r]*)
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