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500 lines (437 loc) · 9.48 KB
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/**
* Module dependencies.
*/
var Grammar = require('grammarjs-grammar');
var Token = require('grammarjs-token');
var punc = require('grammarjs-punctuation');
var grammar = new Grammar('bash');
var rule = grammar.rule;
var value = Token.value;
var passthrough = Token.passthrough;
/**
* Expose `grammar`.
*/
module.exports = grammar;
/**
* Plugins.
*/
grammar.use(punc());
/**
* Bash 2.0.
*/
rule('bash')
.match(':pipeline', passthrough);
/**
* Pipeline.
*/
rule('pipeline')
.match(
':pipeline',
':punctuation.pipe',
':list.newline',
':pipeline',
passthrough)
.match(
':command',
passthrough);
/**
* Command.
*/
rule('command')
.match(
':command.simple',
passthrough)
.match(
':command.shell',
passthrough)
.match(
':command.shell',
':list.direction',
passthrough);
/**
* Shell command.
*/
rule('command.shell')
.match(':command.for', passthrough)
.match(':command.case', passthrough)
.match(':command.while', passthrough)
.match(':command.until', passthrough)
.match(':command.select', passthrough)
.match(':command.if', passthrough)
.match(':subshell', passthrough)
.match(':command.group', passthrough)
.match(':function', passthrough);
/**
* Group.
*/
rule('command.group')
.match('{', ':list', '}', passthrough);
rule('list.newline')
.match(':list.newline', '\n', passthrough);
/**
* for loop.
*/
rule('command.for')
.match(':keyword.for', ':identifier', ':list.newline', ':keyword.do', ':list.compound', ':keyword.done', passthrough)
.match(':keyword.for', ':identifier', ':list.newline', '{', ':list.compound', '}', passthrough)
.match(':keyword.for', ':identifier', ';', ':list.newline', ':keyword.do', ':list.compound', ':keyword.done', passthrough)
.match(':keyword.for', ':identifier', ';', ':list.newline', '{', ':list.compound', '}', passthrough)
.match(':keyword.for', ':identifier', ':list.newline', ':keyword.in', ':identifier_list', ':list_terminator', passthrough)
.match(':keyword.for', ':list.newline', ':keyword.do', ':list.compound', ':keyword.done', passthrough)
.match(':keyword.for', ':identifier', ':list.newline', ':keyword.in', ':identifier_list', ':list_terminator', ':list.newline', '{', ':list.compound', '}', passthrough);
/**
* `case` command.
*/
rule('command.case')
.match(':keyword.case', ':identifier', ':newline_list', ':keyword.in', ':newline_list', ':keyword.esac', passthrough)
.match(':keyword.case', ':identifier', ':newline_list', ':keyword.in', ':case_clause_sequence', ':newline_list', ':keyword.esac', passthrough)
.match(':keyword.case', ':identifier', ':newline_list', ':keyword.in', ':case_clause', ':esac', passthrough);
/**
* `while` command.
*/
rule('command.while')
.match(
':keyword.while',
':list.compound',
':keyword.do',
':list.compound',
':keyword.done',
passthrough);
/**
* `until` command.
*
* TODO: this is exactly the same as `while`.
*/
rule('command.until')
.match(
':keyword.until',
':list.compound',
':keyword.do',
':list.compound',
':keyword.done',
passthrough);
/**
* `select` command.
*/
rule('command.select')
.match(':keyword.select', ':word', ':newline_list', ':keyword.do', ':list', ':keyword.done', passthrough)
.match(':keyword.select', ':word', ':newline_list', '{', ':list', '}', passthrough)
.match(':keyword.select', ':word', ';', ':newline_list', ':keyword.do', ':list', ':keyword.done', passthrough)
.match(':keyword.select', ':word', ';', ':newline_list', '{', ':list', '}', passthrough)
.match(':keyword.select', ':word', ':newline_list', ':keyword.in', ':word_list', ':list_terminator', ':newline_list', ':keyword.do', ':list', ':keyword.done', passthrough)
.match(':keyword.select', ':word', ':newline_list', ':keyword.in', ':word_list', ':list_terminator', ':newline_list', '{', ':list', '}', passthrough);
/**
* `if` command.
*/
rule('command.if')
.match(':keyword.if', ':list.compound', ':keyword.then', ':list.compound', ':keyword.fi', passthrough)
.match(':keyword.if', ':list.compound', ':keyword.then', ':list.compound', ':keyword.else', ':list.compound', ':keyword.fi', passthrough)
.match(':keyword.if', ':list.compound', ':keyword.then', ':list.compound', ':elif_clause', ':keyword.fi', passthrough);
/**
* Simple command.
*/
rule('command.simple')
.match(':command.simple_element', passthrough)
.match(':command.simple', ':command.simple_element', passthrough);
rule('command.simple_element')
.match(':identifier', passthrough)
.match(':assignment', passthrough)
.match(':redirection', passthrough);
rule('word.list')
.match(
':identifier+',
passthrough);
/**
* Assignment.
*/
rule('assignment')
.match(
':identifier',
':operator.equal',
':identifier',
passthrough);
/**
* Output redirection.
*/
rule('redirection')
.match(
':operator.bracket.angle.begin',
':identifier',
passthrough)
.match(
'<',
':identifier',
passthrough)
.match(
':literal.number',
'>',
':identifier',
passthrough)
.match(
':literal.number',
'<',
':identifier',
passthrough)
.match(
'>>',
':identifier',
passthrough)
.match(
':literal.number',
'>>',
':identifier',
passthrough)
.match(
'<<',
':identifier',
passthrough)
.match(
':literal.number',
'<<',
':identifier',
passthrough)
.match(
'<&',
':literal.number',
passthrough)
.match(
':literal.number',
'<&',
':literal.number',
passthrough)
.match(
'>&',
':literal.number',
passthrough)
.match(
':literal.number',
'>&',
':literal.number',
passthrough)
.match(
'<&',
':identifier',
passthrough)
.match(
':literal.number',
'<&',
':identifier',
passthrough)
.match(
'>&',
':identifier',
passthrough)
.match(
':literal.number',
'>&',
':identifier',
passthrough)
.match(
'<<-',
':identifier',
passthrough)
.match(
':literal.number',
'<<-',
':identifier',
passthrough)
.match(
'>&',
'-',
passthrough)
.match(
':literal.number',
'>&',
'-',
passthrough)
.match(
'<&',
'-',
passthrough)
.match(
':literal.number',
'<&',
'-',
passthrough)
.match(
'&>',
':identifier',
passthrough)
.match(
':literal.number',
'<>',
':identifier', passthrough)
.match(
'<>',
':identifier',
passthrough)
.match(
'>|',
':identifier',
passthrough)
.match(
':literal.number',
'>|',
':identifier',
passthrough);
rule('redirection_list')
.match(':redirection', passthrough)
.match(':redirection_list', ':redirection', passthrough);
rule('list.compound')
.match(':list.newline', ':list1')
.match(':list');
rule('list0')
.match(
':list1',
'\n',
':list.newline',
passthrough)
.match(
':list1',
'&',
':list.newline',
passthrough)
.match(
':list1',
';',
':list.newline',
passthrough);
rule('list1')
.match(
':list1',
'&&',
':list.newline',
':list1',
passthrough)
.match(
':list1',
'||',
':list.newline',
':list1',
passthrough)
.match(
':list1',
'&',
':list.newline',
':list1',
passthrough)
.match(
':list1',
';',
':list.newline',
':list1',
passthrough)
.match(
':list1',
'\n',
':list.newline',
':list1',
passthrough)
.match(
':pipeline_command',
passthrough);
rule('list.terminator')
.match('\n', value)
.match(':punctuation.semicolon', passthrough);
/**
* Pattern.
*/
rule('pattern')
.match(
':identifier',
passthrough)
.match(
':pattern',
':operator.pipe',
':identifier',
passthrough);
/**
* Subshell.
*/
rule('subshell')
.match(
':punctuation.bracket.parenthesis.begin',
':list.compound',
':punctuation.bracket.parenthesis.end',
passthrough);
/**
* Function.
*/
rule('function')
.match(
':identifier',
':punctuation.bracket.parenthesis.begin',
':punctuation.bracket.parenthesis.end',
':list.newline',
':command.group',
passthrough)
.match(
':keyword.function',
':identifier',
':punctuation.bracket.parenthesis.begin',
':punctuation.bracket.parenthesis.end',
':list.newline',
':command.group',
passthrough)
.match(
':keyword.function',
':identifier',
':list.newline',
':command.group',
passthrough)
/**
* Keywords.
*/
keyword('while');
keyword('until');
keyword('do');
keyword('if');
keyword('fi');
keyword('done');
keyword('for');
keyword('function');
keyword('case');
keyword('esac');
keyword('else');
keyword('elif');
keyword('in');
keyword('then');
keyword('select');
/**
* Number.
*/
rule('literal.number')
.match(/[0-9]+/, passthrough);
/**
* Identifier.
*/
rule('identifier')
.match(/[a-zA-Z_]+/, value);
/**
* Operators.
*/
operator('equal', '=');
operator('bracket.angle.begin', '<');
operator('pipe', '|');
/**
* Punctuation.
*/
punc('pipe', '|');
/**
* Define keyword rule.
*
* @param {String} name
* @api private
*/
function keyword(name) {
return rule('keyword.' + name).match(name, value);
}
function operator(name, symbol) {
return rule('operator.' + name).match(symbol, value);
}
function punc(name, symbol) {
return rule('punctuation.' + name).match(symbol, value);
}
function log() {
console.log(JSON.stringify(arguments));
}