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parser.js
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parser.js
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module.exports = parse
function parse(input, opts) {
// Wrap parser.parse to allow specifying the start rule
// as a shorthand option
if (!opts) {
opts = {}
}
else if (typeof opts == 'string') {
opts = { startRule: opts }
}
return parser.parse(input, opts)
}
var parser=(function() {
"use strict";
/*
* Generated by PEG.js 0.9.0.
*
* http://pegjs.org/
*/
function peg$subclass(child, parent) {
function ctor() { this.constructor = child; }
ctor.prototype = parent.prototype;
child.prototype = new ctor();
}
function peg$SyntaxError(message, expected, found, location) {
this.message = message;
this.expected = expected;
this.found = found;
this.location = location;
this.name = "SyntaxError";
if (typeof Error.captureStackTrace === "function") {
Error.captureStackTrace(this, peg$SyntaxError);
}
}
peg$subclass(peg$SyntaxError, Error);
function peg$parse(input) {
var options = arguments.length > 1 ? arguments[1] : {},
parser = this,
peg$FAILED = {},
peg$startRuleFunctions = { script: peg$parsescript, command: peg$parsecommand, argument: peg$parseargument, continuationStart: peg$parsecontinuationStart },
peg$startRuleFunction = peg$parsescript,
peg$c0 = function(statements) {
return statements || []
},
peg$c1 = function(head, tail, last) {
var statements = [head]
var prev = head
map(tail, function (spaceOpSpaceCmd, i, cmds) {
setOperator(spaceOpSpaceCmd[0], prev)
statements.push(prev = spaceOpSpaceCmd[2])
})
if (last) {
if (!prev) { debugger }
setOperator(last, prev)
}
return statements
function setOperator(operator, command) {
while (command.next) {
command = command.next
}
command.control = operator
}
},
peg$c2 = function(statement, next) {
if (typeof next !== 'undefined' && next) {
next = next[1]
statement.control = next[0]
statement.next = next[1]
} else {
statement.control = ';'
statement.next = null
}
return statement
},
peg$c3 = "&&",
peg$c4 = { type: "literal", value: "&&", description: "\"&&\"" },
peg$c5 = "||",
peg$c6 = { type: "literal", value: "||", description: "\"||\"" },
peg$c7 = function(operator, statement) {
return [operator, statement]
},
peg$c8 = { type: "other", description: "a subshell" },
peg$c9 = "(",
peg$c10 = { type: "literal", value: "(", description: "\"(\"" },
peg$c11 = ")",
peg$c12 = { type: "literal", value: ")", description: "\")\"" },
peg$c13 = function(statements) {
return {
type: 'subshell',
statements: statements,
}
},
peg$c14 = { type: "other", description: "a single command" },
peg$c15 = function(pre, name, post, pipe) {
var command = {
type: 'command',
command: name,
args: [],
redirects: [],
env: {},
control: ';',
next: null,
}
map(pre, first).concat(map(post, second)).forEach(function (token) {
if (!token || !token.type) return
switch (token.type) {
case 'moveFd':
case 'duplicateFd':
case 'redirectFd':
return command.redirects.push(token)
case 'variableAssignment':
return command.env[token.name] = token.value
default:
command.args.push(token)
}
})
if (pipe) {
command.redirects.push(pipe[1])
}
return command
},
peg$c16 = function(test) {
return test
},
peg$c17 = { type: "other", description: "an if/elif/else statement" },
peg$c18 = "if",
peg$c19 = { type: "literal", value: "if", description: "\"if\"" },
peg$c20 = "then",
peg$c21 = { type: "literal", value: "then", description: "\"then\"" },
peg$c22 = "else",
peg$c23 = { type: "literal", value: "else", description: "\"else\"" },
peg$c24 = "fi",
peg$c25 = { type: "literal", value: "fi", description: "\"fi\"" },
peg$c26 = function(test, body, elifBlocks, elseBody) {
return {
type: 'ifElse',
test: test,
body: body,
elifBlocks: elifBlocks.length ? elifBlocks : null,
elseBody: elseBody ? elseBody[1] : null,
}
},
peg$c27 = "elif",
peg$c28 = { type: "literal", value: "elif", description: "\"elif\"" },
peg$c29 = function(test, body) {
return {
type: 'ifElse',
test: test,
body: body
}
},
peg$c30 = { type: "other", description: "a while/until loop" },
peg$c31 = "while",
peg$c32 = { type: "literal", value: "while", description: "\"while\"" },
peg$c33 = "until",
peg$c34 = { type: "literal", value: "until", description: "\"until\"" },
peg$c35 = "do",
peg$c36 = { type: "literal", value: "do", description: "\"do\"" },
peg$c37 = "done",
peg$c38 = { type: "literal", value: "done", description: "\"done\"" },
peg$c39 = function(kind, test, body) {
return {
type: kind + 'Loop',
test: test,
body: body
}
},
peg$c40 = { type: "other", description: "a for loop" },
peg$c41 = "for",
peg$c42 = { type: "literal", value: "for", description: "\"for\"" },
peg$c43 = "in",
peg$c44 = { type: "literal", value: "in", description: "\"in\"" },
peg$c45 = ";",
peg$c46 = { type: "literal", value: ";", description: "\";\"" },
peg$c47 = "\n",
peg$c48 = { type: "literal", value: "\n", description: "\"\\n\"" },
peg$c49 = function(loopVar, subjects, body) {
return {
type: 'forLoop',
loopVariable: loopVar,
subjects: subjects[1].map(second),
body: body
}
},
peg$c50 = { type: "other", description: "time builtin" },
peg$c51 = "time",
peg$c52 = { type: "literal", value: "time", description: "\"time\"" },
peg$c53 = "-",
peg$c54 = { type: "literal", value: "-", description: "\"-\"" },
peg$c55 = /^[a-z]/,
peg$c56 = { type: "class", value: "[a-z]", description: "[a-z]" },
peg$c57 = function(flags, statements) {
return {
type: 'time',
flags: flags,
command: statements
}
},
peg$c58 = { type: "other", description: "declare builtin" },
peg$c59 = "declare",
peg$c60 = { type: "literal", value: "declare", description: "\"declare\"" },
peg$c61 = "typeset",
peg$c62 = { type: "literal", value: "typeset", description: "\"typeset\"" },
peg$c63 = /^[^\n]/,
peg$c64 = { type: "class", value: "[^\\n]", description: "[^\\n]" },
peg$c65 = { type: "other", description: "a variable assignment" },
peg$c66 = "=",
peg$c67 = { type: "literal", value: "=", description: "\"=\"" },
peg$c68 = function(name, value) {
return {type: 'variableAssignment', name: name, value: value}
},
peg$c69 = { type: "other", description: "command name" },
peg$c70 = function(name) {
return name
},
peg$c71 = "[[",
peg$c72 = { type: "literal", value: "[[", description: "\"[[\"" },
peg$c73 = "[",
peg$c74 = { type: "literal", value: "[", description: "\"[\"" },
peg$c75 = { type: "other", description: "command argument" },
peg$c76 = { type: "other", description: "concatenation of strings and/or variables" },
peg$c77 = function(pieces) {
return flattenConcatenation(pieces)
},
peg$c78 = { type: "other", description: "bareword" },
peg$c79 = "#",
peg$c80 = { type: "literal", value: "#", description: "\"#\"" },
peg$c81 = function(cs) { return literal(cs) },
peg$c82 = "\\",
peg$c83 = { type: "literal", value: "\\", description: "\"\\\\\"" },
peg$c84 = function(chr) { return chr },
peg$c85 = { type: "any", description: "any character" },
peg$c86 = /^[$"';&<>\n()[*?|` ]/,
peg$c87 = { type: "class", value: "[$\"';&<>\\n()\\[*?|` ]", description: "[$\"';&<>\\n()\\[*?|` ]" },
peg$c88 = "*",
peg$c89 = { type: "literal", value: "*", description: "\"*\"" },
peg$c90 = "?",
peg$c91 = { type: "literal", value: "?", description: "\"?\"" },
peg$c92 = function() {
return {
type: 'glob',
value: text()
}
},
peg$c93 = "]",
peg$c94 = { type: "literal", value: "]", description: "\"]\"" },
peg$c95 = "$",
peg$c96 = { type: "literal", value: "$", description: "\"$\"" },
peg$c97 = "{",
peg$c98 = { type: "literal", value: "{", description: "\"{\"" },
peg$c99 = "}",
peg$c100 = { type: "literal", value: "}", description: "\"}\"" },
peg$c101 = "'",
peg$c102 = { type: "literal", value: "'", description: "\"'\"" },
peg$c103 = /^[^']/,
peg$c104 = { type: "class", value: "[^']", description: "[^']" },
peg$c105 = function(inner) { return literal(inner) },
peg$c106 = "\"",
peg$c107 = { type: "literal", value: "\"", description: "\"\\\"\"" },
peg$c108 = function(contents) {
var pieces = contents.map(function (it) {
return isArray(it) ? literal(it) : it
})
return flattenConcatenation(pieces)
},
peg$c109 = "\\\\",
peg$c110 = { type: "literal", value: "\\\\", description: "\"\\\\\\\\\"" },
peg$c111 = function() { return '\\' },
peg$c112 = "`",
peg$c113 = { type: "literal", value: "`", description: "\"`\"" },
peg$c114 = function(name) {
return {type: 'variable', name: name}
},
peg$c115 = /^[a-zA-Z0-9_]/,
peg$c116 = { type: "class", value: "[a-zA-Z0-9_]", description: "[a-zA-Z0-9_]" },
peg$c117 = function() { return text() },
peg$c118 = "${",
peg$c119 = { type: "literal", value: "${", description: "\"${\"" },
peg$c120 = /^[^}]/,
peg$c121 = { type: "class", value: "[^}]", description: "[^}]" },
peg$c122 = function(expr) {
return {
type: 'variableSubstitution',
expression: join(expr), // TODO subParser
}
},
peg$c123 = "$(",
peg$c124 = { type: "literal", value: "$(", description: "\"$(\"" },
peg$c125 = function(commands) {
return {
type: 'commandSubstitution',
commands: commands
}
},
peg$c126 = function(input) {
return { type: 'commandSubstitution', commands: parse(input.join('')) }
},
peg$c127 = "\\`",
peg$c128 = { type: "literal", value: "\\`", description: "\"\\\\`\"" },
peg$c129 = function() { return '`' },
peg$c130 = /^[<>]/,
peg$c131 = { type: "class", value: "[<>]", description: "[<>]" },
peg$c132 = function(rw, commands) {
return {
type: 'processSubstitution',
readWrite: rw,
commands: commands,
}
},
peg$c133 = "<&",
peg$c134 = { type: "literal", value: "<&", description: "\"<&\"" },
peg$c135 = ">&",
peg$c136 = { type: "literal", value: ">&", description: "\">&\"" },
peg$c137 = function(fd, op, dest) {
if (fd == null) fd = op[0] == '<' ? 0 : 1;
return {
type: 'moveFd',
fd: fd,
op: op,
dest: dest
}
},
peg$c138 = function(src, op, dest) {
if (src == null) src = op[0] == '<' ? 0 : 1;
return {
type: 'duplicateFd',
srcFd: src,
op: op,
destFd: dest,
}
},
peg$c139 = function(fd, op, filename) {
if (fd == null) fd = op[0] == '<' ? 0 : 1;
return {
type: 'redirectFd',
fd: fd,
op: op,
filename: filename
}
},
peg$c140 = ">|",
peg$c141 = { type: "literal", value: ">|", description: "\">|\"" },
peg$c142 = ">>",
peg$c143 = { type: "literal", value: ">>", description: "\">>\"" },
peg$c144 = "&>>",
peg$c145 = { type: "literal", value: "&>>", description: "\"&>>\"" },
peg$c146 = "&>",
peg$c147 = { type: "literal", value: "&>", description: "\"&>\"" },
peg$c148 = "<",
peg$c149 = { type: "literal", value: "<", description: "\"<\"" },
peg$c150 = ">",
peg$c151 = { type: "literal", value: ">", description: "\">\"" },
peg$c152 = /^[0-9]/,
peg$c153 = { type: "class", value: "[0-9]", description: "[0-9]" },
peg$c154 = function(digits) { return parseInt(join(digits), 10) },
peg$c155 = "&",
peg$c156 = { type: "literal", value: "&", description: "\"&\"" },
peg$c157 = function(op) {
return op == '\n' ? ';' : op
},
peg$c158 = "|",
peg$c159 = { type: "literal", value: "|", description: "\"|\"" },
peg$c160 = function(command) {
return {type: 'pipe', command: command}
},
peg$c161 = { type: "other", description: "whitespace" },
peg$c162 = " ",
peg$c163 = { type: "literal", value: " ", description: "\" \"" },
peg$c164 = "\t",
peg$c165 = { type: "literal", value: "\t", description: "\"\\t\"" },
peg$c166 = { type: "other", description: "a comment" },
peg$c167 = "case",
peg$c168 = { type: "literal", value: "case", description: "\"case\"" },
peg$c169 = "esac",
peg$c170 = { type: "literal", value: "esac", description: "\"esac\"" },
peg$currPos = 0,
peg$savedPos = 0,
peg$posDetailsCache = [{ line: 1, column: 1, seenCR: false }],
peg$maxFailPos = 0,
peg$maxFailExpected = [],
peg$silentFails = 0,
peg$result;
if ("startRule" in options) {
if (!(options.startRule in peg$startRuleFunctions)) {
throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
}
peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
}
function text() {
return input.substring(peg$savedPos, peg$currPos);
}
function location() {
return peg$computeLocation(peg$savedPos, peg$currPos);
}
function expected(description) {
throw peg$buildException(
null,
[{ type: "other", description: description }],
input.substring(peg$savedPos, peg$currPos),
peg$computeLocation(peg$savedPos, peg$currPos)
);
}
function error(message) {
throw peg$buildException(
message,
null,
input.substring(peg$savedPos, peg$currPos),
peg$computeLocation(peg$savedPos, peg$currPos)
);
}
function peg$computePosDetails(pos) {
var details = peg$posDetailsCache[pos],
p, ch;
if (details) {
return details;
} else {
p = pos - 1;
while (!peg$posDetailsCache[p]) {
p--;
}
details = peg$posDetailsCache[p];
details = {
line: details.line,
column: details.column,
seenCR: details.seenCR
};
while (p < pos) {
ch = input.charAt(p);
if (ch === "\n") {
if (!details.seenCR) { details.line++; }
details.column = 1;
details.seenCR = false;
} else if (ch === "\r" || ch === "\u2028" || ch === "\u2029") {
details.line++;
details.column = 1;
details.seenCR = true;
} else {
details.column++;
details.seenCR = false;
}
p++;
}
peg$posDetailsCache[pos] = details;
return details;
}
}
function peg$computeLocation(startPos, endPos) {
var startPosDetails = peg$computePosDetails(startPos),
endPosDetails = peg$computePosDetails(endPos);
return {
start: {
offset: startPos,
line: startPosDetails.line,
column: startPosDetails.column
},
end: {
offset: endPos,
line: endPosDetails.line,
column: endPosDetails.column
}
};
}
function peg$fail(expected) {
if (peg$currPos < peg$maxFailPos) { return; }
if (peg$currPos > peg$maxFailPos) {
peg$maxFailPos = peg$currPos;
peg$maxFailExpected = [];
}
peg$maxFailExpected.push(expected);
}
function peg$buildException(message, expected, found, location) {
function cleanupExpected(expected) {
var i = 1;
expected.sort(function(a, b) {
if (a.description < b.description) {
return -1;
} else if (a.description > b.description) {
return 1;
} else {
return 0;
}
});
while (i < expected.length) {
if (expected[i - 1] === expected[i]) {
expected.splice(i, 1);
} else {
i++;
}
}
}
function buildMessage(expected, found) {
function stringEscape(s) {
function hex(ch) { return ch.charCodeAt(0).toString(16).toUpperCase(); }
return s
.replace(/\\/g, '\\\\')
.replace(/"/g, '\\"')
.replace(/\x08/g, '\\b')
.replace(/\t/g, '\\t')
.replace(/\n/g, '\\n')
.replace(/\f/g, '\\f')
.replace(/\r/g, '\\r')
.replace(/[\x00-\x07\x0B\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
.replace(/[\x10-\x1F\x80-\xFF]/g, function(ch) { return '\\x' + hex(ch); })
.replace(/[\u0100-\u0FFF]/g, function(ch) { return '\\u0' + hex(ch); })
.replace(/[\u1000-\uFFFF]/g, function(ch) { return '\\u' + hex(ch); });
}
var expectedDescs = new Array(expected.length),
expectedDesc, foundDesc, i;
for (i = 0; i < expected.length; i++) {
expectedDescs[i] = expected[i].description;
}
expectedDesc = expected.length > 1
? expectedDescs.slice(0, -1).join(", ")
+ " or "
+ expectedDescs[expected.length - 1]
: expectedDescs[0];
foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";
return "Expected " + expectedDesc + " but " + foundDesc + " found.";
}
if (expected !== null) {
cleanupExpected(expected);
}
return new peg$SyntaxError(
message !== null ? message : buildMessage(expected, found),
expected,
found,
location
);
}
function peg$parsescript() {
var s0, s1, s2;
s0 = peg$currPos;
s1 = [];
s2 = peg$parsespaceNL();
while (s2 !== peg$FAILED) {
s1.push(s2);
s2 = peg$parsespaceNL();
}
if (s1 !== peg$FAILED) {
s2 = peg$parsestatementList();
if (s2 === peg$FAILED) {
s2 = null;
}
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c0(s2);
s0 = s1;
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parsestatementList() {
var s0, s1, s2, s3, s4, s5, s6;
s0 = peg$currPos;
s1 = peg$parsestatement();
if (s1 !== peg$FAILED) {
s2 = [];
s3 = peg$currPos;
s4 = peg$parsecontrolOperator();
if (s4 !== peg$FAILED) {
s5 = [];
s6 = peg$parsespaceNL();
while (s6 !== peg$FAILED) {
s5.push(s6);
s6 = peg$parsespaceNL();
}
if (s5 !== peg$FAILED) {
s6 = peg$parsestatement();
if (s6 !== peg$FAILED) {
s4 = [s4, s5, s6];
s3 = s4;
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
while (s3 !== peg$FAILED) {
s2.push(s3);
s3 = peg$currPos;
s4 = peg$parsecontrolOperator();
if (s4 !== peg$FAILED) {
s5 = [];
s6 = peg$parsespaceNL();
while (s6 !== peg$FAILED) {
s5.push(s6);
s6 = peg$parsespaceNL();
}
if (s5 !== peg$FAILED) {
s6 = peg$parsestatement();
if (s6 !== peg$FAILED) {
s4 = [s4, s5, s6];
s3 = s4;
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
}
if (s2 !== peg$FAILED) {
s3 = [];
s4 = peg$parsespace();
while (s4 !== peg$FAILED) {
s3.push(s4);
s4 = peg$parsespace();
}
if (s3 !== peg$FAILED) {
s4 = peg$parsecontrolOperator();
if (s4 === peg$FAILED) {
s4 = null;
}
if (s4 !== peg$FAILED) {
s5 = [];
s6 = peg$parsespaceNL();
while (s6 !== peg$FAILED) {
s5.push(s6);
s6 = peg$parsespaceNL();
}
if (s5 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c1(s1, s2, s4);
s0 = s1;
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parsestatement() {
var s0, s1, s2, s3, s4;
s0 = peg$currPos;
s1 = peg$parsesubshell();
if (s1 === peg$FAILED) {
s1 = peg$parsebashExtensions();
if (s1 === peg$FAILED) {
s1 = peg$parsecommand();
if (s1 === peg$FAILED) {
s1 = peg$parsevariableAssignment();
if (s1 === peg$FAILED) {
s1 = peg$parseifBlock();
if (s1 === peg$FAILED) {
s1 = peg$parseconditionalLoop();
if (s1 === peg$FAILED) {
s1 = peg$parseforLoop();
}
}
}
}
}
}
if (s1 !== peg$FAILED) {
s2 = peg$currPos;
s3 = [];
s4 = peg$parsespace();
while (s4 !== peg$FAILED) {
s3.push(s4);
s4 = peg$parsespace();
}
if (s3 !== peg$FAILED) {
s4 = peg$parsechainedStatement();
if (s4 !== peg$FAILED) {
s3 = [s3, s4];
s2 = s3;
} else {
peg$currPos = s2;
s2 = peg$FAILED;
}
} else {
peg$currPos = s2;
s2 = peg$FAILED;
}
if (s2 === peg$FAILED) {
s2 = null;
}
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c2(s1, s2);
s0 = s1;
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parsechainedStatement() {
var s0, s1, s2, s3;
s0 = peg$currPos;
if (input.substr(peg$currPos, 2) === peg$c3) {
s1 = peg$c3;
peg$currPos += 2;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c4); }
}
if (s1 === peg$FAILED) {
if (input.substr(peg$currPos, 2) === peg$c5) {
s1 = peg$c5;
peg$currPos += 2;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c6); }
}
}
if (s1 !== peg$FAILED) {
s2 = [];
s3 = peg$parsespaceNL();
while (s3 !== peg$FAILED) {
s2.push(s3);
s3 = peg$parsespaceNL();
}
if (s2 !== peg$FAILED) {
s3 = peg$parsestatement();
if (s3 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c7(s1, s3);
s0 = s1;
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parsesubshell() {
var s0, s1, s2, s3, s4, s5;
peg$silentFails++;
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 40) {
s1 = peg$c9;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c10); }
}
if (s1 !== peg$FAILED) {
s2 = [];
s3 = peg$parsespace();
while (s3 !== peg$FAILED) {
s2.push(s3);
s3 = peg$parsespace();
}
if (s2 !== peg$FAILED) {
s3 = peg$parsestatementList();
if (s3 !== peg$FAILED) {
s4 = [];
s5 = peg$parsespace();
while (s5 !== peg$FAILED) {
s4.push(s5);
s5 = peg$parsespace();
}
if (s4 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 41) {
s5 = peg$c11;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c12); }
}
if (s5 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c13(s3);
s0 = s1;
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
peg$silentFails--;
if (s0 === peg$FAILED) {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c8); }
}
return s0;
}
function peg$parsecommand() {
var s0, s1, s2, s3, s4, s5, s6;
peg$silentFails++;
s0 = peg$currPos;
s1 = [];
s2 = peg$currPos;
s3 = peg$parsevariableAssignment();
if (s3 === peg$FAILED) {
s3 = peg$parseredirect();
}
if (s3 !== peg$FAILED) {
s4 = [];
s5 = peg$parsespace();
if (s5 !== peg$FAILED) {
while (s5 !== peg$FAILED) {
s4.push(s5);
s5 = peg$parsespace();
}
} else {
s4 = peg$FAILED;
}
if (s4 !== peg$FAILED) {
s3 = [s3, s4];
s2 = s3;
} else {
peg$currPos = s2;
s2 = peg$FAILED;
}
} else {
peg$currPos = s2;
s2 = peg$FAILED;
}
while (s2 !== peg$FAILED) {
s1.push(s2);
s2 = peg$currPos;
s3 = peg$parsevariableAssignment();
if (s3 === peg$FAILED) {
s3 = peg$parseredirect();
}
if (s3 !== peg$FAILED) {
s4 = [];
s5 = peg$parsespace();
if (s5 !== peg$FAILED) {
while (s5 !== peg$FAILED) {
s4.push(s5);
s5 = peg$parsespace();
}
} else {
s4 = peg$FAILED;
}
if (s4 !== peg$FAILED) {
s3 = [s3, s4];
s2 = s3;
} else {
peg$currPos = s2;
s2 = peg$FAILED;
}
} else {
peg$currPos = s2;
s2 = peg$FAILED;
}
}
if (s1 !== peg$FAILED) {
s2 = peg$parsecommandName();
if (s2 === peg$FAILED) {
s2 = peg$parsebuiltinCommandName();
}
if (s2 !== peg$FAILED) {
s3 = [];
s4 = peg$currPos;
s5 = [];
s6 = peg$parsespace();
if (s6 !== peg$FAILED) {
while (s6 !== peg$FAILED) {
s5.push(s6);
s6 = peg$parsespace();
}
} else {
s5 = peg$FAILED;
}
if (s5 !== peg$FAILED) {
s6 = peg$parseredirect();
if (s6 === peg$FAILED) {
s6 = peg$parseargument();
}
if (s6 !== peg$FAILED) {
s5 = [s5, s6];
s4 = s5;
} else {
peg$currPos = s4;
s4 = peg$FAILED;
}
} else {
peg$currPos = s4;
s4 = peg$FAILED;
}
while (s4 !== peg$FAILED) {
s3.push(s4);
s4 = peg$currPos;
s5 = [];
s6 = peg$parsespace();