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{
var nodes = [];
function genError(err, line, col) {
var ex = new Error(err);
ex.line = line;
ex.column = col;
throw ex;
}
function addNode(node) {
nodes.push(node);
}
function node(type, value, line, column, key) {
var obj = { type: type, value: value, line: line(), column: column() };
if (key) obj.key = key;
return obj;
}
function convertCodePoint(str, line, col) {
var num = parseInt("0x" + str);
if (
!isFinite(num) ||
Math.floor(num) != num ||
num < 0 ||
num > 0x10FFFF ||
(num > 0xD7FF && num < 0xE000)
) {
genError("Invalid Unicode escape code: " + str, line, col);
} else {
return fromCodePoint(num);
}
}
function fromCodePoint() {
var MAX_SIZE = 0x4000;
var codeUnits = [];
var highSurrogate;
var lowSurrogate;
var index = -1;
var length = arguments.length;
if (!length) {
return '';
}
var result = '';
while (++index < length) {
var codePoint = Number(arguments[index]);
if (codePoint <= 0xFFFF) { // BMP code point
codeUnits.push(codePoint);
} else { // Astral code point; split in surrogate halves
// http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
codePoint -= 0x10000;
highSurrogate = (codePoint >> 10) + 0xD800;
lowSurrogate = (codePoint % 0x400) + 0xDC00;
codeUnits.push(highSurrogate, lowSurrogate);
}
if (index + 1 == length || codeUnits.length > MAX_SIZE) {
result += String.fromCharCode.apply(null, codeUnits);
codeUnits.length = 0;
}
}
return result;
}
}
start
= line* { return nodes }
line
= S* expr:expression S* comment* (NL+ / EOF)
/ S+ (NL+ / EOF)
/ NL
expression
= comment / path / tablearray / assignment
comment
= '#' (!(NL / EOF) .)*
path
= '[' S* name:table_key S* ']' { addNode(node('ObjectPath', name, line, column)) }
tablearray
= '[' '[' S* name:table_key S* ']' ']' { addNode(node('ArrayPath', name, line, column)) }
table_key
= parts:dot_ended_table_key_part+ name:table_key_part { return parts.concat(name) }
/ name:table_key_part { return [name] }
table_key_part
= S* name:key S* { return name }
/ S* name:quoted_key S* { return name }
dot_ended_table_key_part
= S* name:key S* '.' S* { return name }
/ S* name:quoted_key S* '.' S* { return name }
assignment
= key:key S* '=' S* value:value { addNode(node('Assign', value, line, column, key)) }
/ key:quoted_key S* '=' S* value:value { addNode(node('Assign', value, line, column, key)) }
key
= chars:ASCII_BASIC+ { return chars.join('') }
quoted_key
= node:double_quoted_single_line_string { return node.value }
/ node:single_quoted_single_line_string { return node.value }
value
= string / datetime / float / integer / boolean / array / inline_table
string
= double_quoted_multiline_string
/ double_quoted_single_line_string
/ single_quoted_multiline_string
/ single_quoted_single_line_string
double_quoted_multiline_string
= '"""' NL? chars:multiline_string_char* '"""' { return node('String', chars.join(''), line, column) }
double_quoted_single_line_string
= '"' chars:string_char* '"' { return node('String', chars.join(''), line, column) }
single_quoted_multiline_string
= "'''" NL? chars:multiline_literal_char* "'''" { return node('String', chars.join(''), line, column) }
single_quoted_single_line_string
= "'" chars:literal_char* "'" { return node('String', chars.join(''), line, column) }
string_char
= ESCAPED / (!'"' char:. { return char })
literal_char
= (!"'" char:. { return char })
multiline_string_char
= ESCAPED / multiline_string_delim / (!'"""' char:. { return char})
multiline_string_delim
= '\\' NL NLS* { return '' }
multiline_literal_char
= (!"'''" char:. { return char })
float
= left:(float_text / integer_text) ('e' / 'E') right:integer_text { return node('Float', parseFloat(left + 'e' + right), line, column) }
/ text:float_text { return node('Float', parseFloat(text), line, column) }
float_text
= '+'? digits:(DIGITS '.' DIGITS) { return digits.join('') }
/ '-' digits:(DIGITS '.' DIGITS) { return '-' + digits.join('') }
integer
= text:integer_text { return node('Integer', parseInt(text, 10), line, column) }
integer_text
= '+'? digits:DIGIT+ !'.' { return digits.join('') }
/ '-' digits:DIGIT+ !'.' { return '-' + digits.join('') }
boolean
= 'true' { return node('Boolean', true, line, column) }
/ 'false' { return node('Boolean', false, line, column) }
array
= '[' array_sep* ']' { return node('Array', [], line, column) }
/ '[' value:array_value? ']' { return node('Array', value ? [value] : [], line, column) }
/ '[' values:array_value_list+ ']' { return node('Array', values, line, column) }
/ '[' values:array_value_list+ value:array_value ']' { return node('Array', values.concat(value), line, column) }
array_value
= array_sep* value:value array_sep* { return value }
array_value_list
= array_sep* value:value array_sep* ',' array_sep* { return value }
array_sep
= S / NL / comment
inline_table
= '{' S* values:inline_table_assignment* S* '}' { return node('InlineTable', values, line, column) }
inline_table_assignment
= S* key:key S* '=' S* value:value S* ',' S* { return node('InlineTableValue', value, line, column, key) }
/ S* key:key S* '=' S* value:value { return node('InlineTableValue', value, line, column, key) }
secfragment
= '.' digits:DIGITS { return "." + digits }
date
= date:(
DIGIT DIGIT DIGIT DIGIT
'-'
DIGIT DIGIT
'-'
DIGIT DIGIT
) { return date.join('') }
time
= time:(DIGIT DIGIT ':' DIGIT DIGIT ':' DIGIT DIGIT secfragment?) { return time.join('') }
time_with_offset
= time:(
DIGIT DIGIT ':' DIGIT DIGIT ':' DIGIT DIGIT secfragment?
('-' / '+')
DIGIT DIGIT ':' DIGIT DIGIT
) { return time.join('') }
datetime
= date:date 'T' time:time 'Z' { return node('Date', new Date(date + "T" + time + "Z"), line, column) }
/ date:date 'T' time:time_with_offset { return node('Date', new Date(date + "T" + time), line, column) }
S = [ \t]
NL = "\n" / "\r" "\n"
NLS = NL / S
EOF = !.
HEX = [0-9a-f]i
DIGIT = DIGIT_OR_UNDER
DIGIT_OR_UNDER = [0-9]
/ '_' { return "" }
ASCII_BASIC = [A-Za-z0-9_\-]
DIGITS = d:DIGIT_OR_UNDER+ { return d.join('') }
ESCAPED = '\\"' { return '"' }
/ '\\\\' { return '\\' }
/ '\\b' { return '\b' }
/ '\\t' { return '\t' }
/ '\\n' { return '\n' }
/ '\\f' { return '\f' }
/ '\\r' { return '\r' }
/ ESCAPED_UNICODE
ESCAPED_UNICODE = "\\U" digits:(HEX HEX HEX HEX HEX HEX HEX HEX) { return convertCodePoint(digits.join('')) }
/ "\\u" digits:(HEX HEX HEX HEX) { return convertCodePoint(digits.join('')) }
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