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'use strict';
// NOTE: ADVANCED_OPTIMIZATIONS mode.
//
// This file is compiled with Closure compiler's ADVANCED_OPTIMIZATIONS flag! Be wary of using
// constructs incompatible with that mode.
/* global $interpolateMinErr: false */
/* global indexToLineAndColumn: false */
/* global InterpolationParts: false */
/* global PluralMessage: false */
/* global SelectMessage: false */
/* global subtractOffset: false */
// The params src and dst are exactly one of two types: NestedParserState or MessageFormatParser.
// This function is fully optimized by V8. (inspect via IRHydra or --trace-deopt.)
// The idea behind writing it this way is to avoid repeating oneself. This is the ONE place where
// the parser state that is saved/restored when parsing nested mustaches is specified.
function copyNestedParserState(src, dst) {
dst.expressionFn = src.expressionFn;
dst.expressionMinusOffsetFn = src.expressionMinusOffsetFn;
dst.pluralOffset = src.pluralOffset;
dst.choices = src.choices;
dst.choiceKey = src.choiceKey;
dst.interpolationParts = src.interpolationParts;
dst.ruleChoiceKeyword = src.ruleChoiceKeyword;
dst.msgStartIndex = src.msgStartIndex;
dst.expressionStartIndex = src.expressionStartIndex;
}
function NestedParserState(parser) {
copyNestedParserState(parser, this);
}
/**
* @constructor
* @private
*/
function MessageFormatParser(text, startIndex, $parse, pluralCat, stringifier,
mustHaveExpression, trustedContext, allOrNothing) {
this.text = text;
this.index = startIndex || 0;
this.$parse = $parse;
this.pluralCat = pluralCat;
this.stringifier = stringifier;
this.mustHaveExpression = !!mustHaveExpression;
this.trustedContext = trustedContext;
this.allOrNothing = !!allOrNothing;
this.expressionFn = null;
this.expressionMinusOffsetFn = null;
this.pluralOffset = null;
this.choices = null;
this.choiceKey = null;
this.interpolationParts = null;
this.msgStartIndex = null;
this.nestedStateStack = [];
this.parsedFn = null;
this.rule = null;
this.ruleStack = null;
this.ruleChoiceKeyword = null;
this.interpNestLevel = null;
this.expressionStartIndex = null;
this.stringStartIndex = null;
this.stringQuote = null;
this.stringInterestsRe = null;
this.angularOperatorStack = null;
this.textPart = null;
}
// preserve v8 optimization.
var EMPTY_STATE = new NestedParserState(new MessageFormatParser(
/* text= */ '', /* startIndex= */ 0, /* $parse= */ null, /* pluralCat= */ null, /* stringifier= */ null,
/* mustHaveExpression= */ false, /* trustedContext= */ null, /* allOrNothing */ false));
MessageFormatParser.prototype.pushState = function pushState() {
this.nestedStateStack.push(new NestedParserState(this));
copyNestedParserState(EMPTY_STATE, this);
};
MessageFormatParser.prototype.popState = function popState() {
if (this.nestedStateStack.length === 0) {
this.errorInParseLogic();
}
var previousState = this.nestedStateStack.pop();
copyNestedParserState(previousState, this);
};
// Oh my JavaScript! Who knew you couldn't match a regex at a specific
// location in a string but will always search forward?!
// Apparently you'll be growing this ability via the sticky flag (y) in
// ES6. I'll just to work around you for now.
MessageFormatParser.prototype.matchRe = function matchRe(re, search) {
re.lastIndex = this.index;
var match = re.exec(this.text);
if (match != null && (search === true || (match.index === this.index))) {
this.index = re.lastIndex;
return match;
}
return null;
};
MessageFormatParser.prototype.searchRe = function searchRe(re) {
return this.matchRe(re, true);
};
MessageFormatParser.prototype.consumeRe = function consumeRe(re) {
// Without the sticky flag, we can't use the .test() method to consume a
// match at the current index. Instead, we'll use the slower .exec() method
// and verify match.index.
return !!this.matchRe(re);
};
// Run through our grammar avoiding deeply nested function call chains.
MessageFormatParser.prototype.run = function run(initialRule) {
this.ruleStack = [initialRule];
do {
this.rule = this.ruleStack.pop();
while (this.rule) {
this.rule();
}
this.assertRuleOrNull(this.rule);
} while (this.ruleStack.length > 0);
};
MessageFormatParser.prototype.errorInParseLogic = function errorInParseLogic() {
throw $interpolateMinErr('logicbug',
'The messageformat parser has encountered an internal error. Please file a github issue against the AngularJS project and provide this message text that triggers the bug. Text: “{0}”',
this.text);
};
MessageFormatParser.prototype.assertRuleOrNull = function assertRuleOrNull(rule) {
if (rule === undefined) {
this.errorInParseLogic();
}
};
var NEXT_WORD_RE = /\s*(\w+)\s*/g;
MessageFormatParser.prototype.errorExpecting = function errorExpecting() {
// What was wrong with the syntax? Unsupported type, missing comma, or something else?
var match = this.matchRe(NEXT_WORD_RE), position;
if (match == null) {
position = indexToLineAndColumn(this.text, this.index);
throw $interpolateMinErr('reqarg',
'Expected one of “plural” or “select” at line {0}, column {1} of text “{2}”',
position.line, position.column, this.text);
}
var word = match[1];
if (word === 'select' || word === 'plural') {
position = indexToLineAndColumn(this.text, this.index);
throw $interpolateMinErr('reqcomma',
'Expected a comma after the keyword “{0}” at line {1}, column {2} of text “{3}”',
word, position.line, position.column, this.text);
} else {
position = indexToLineAndColumn(this.text, this.index);
throw $interpolateMinErr('unknarg',
'Unsupported keyword “{0}” at line {0}, column {1}. Only “plural” and “select” are currently supported. Text: “{3}”',
word, position.line, position.column, this.text);
}
};
var STRING_START_RE = /['"]/g;
MessageFormatParser.prototype.ruleString = function ruleString() {
var match = this.matchRe(STRING_START_RE);
if (match == null) {
var position = indexToLineAndColumn(this.text, this.index);
throw $interpolateMinErr('wantstring',
'Expected the beginning of a string at line {0}, column {1} in text “{2}”',
position.line, position.column, this.text);
}
this.startStringAtMatch(match);
};
MessageFormatParser.prototype.startStringAtMatch = function startStringAtMatch(match) {
this.stringStartIndex = match.index;
this.stringQuote = match[0];
this.stringInterestsRe = this.stringQuote === '\'' ? SQUOTED_STRING_INTEREST_RE : DQUOTED_STRING_INTEREST_RE;
this.rule = this.ruleInsideString;
};
var SQUOTED_STRING_INTEREST_RE = /\\(?:\\|'|u[0-9A-Fa-f]{4}|x[0-9A-Fa-f]{2}|[0-7]{3}|\r\n|\n|[\s\S])|'/g;
var DQUOTED_STRING_INTEREST_RE = /\\(?:\\|"|u[0-9A-Fa-f]{4}|x[0-9A-Fa-f]{2}|[0-7]{3}|\r\n|\n|[\s\S])|"/g;
MessageFormatParser.prototype.ruleInsideString = function ruleInsideString() {
var match = this.searchRe(this.stringInterestsRe);
if (match == null) {
var position = indexToLineAndColumn(this.text, this.stringStartIndex);
throw $interpolateMinErr('untermstr',
'The string beginning at line {0}, column {1} is unterminated in text “{2}”',
position.line, position.column, this.text);
}
if (match[0] === this.stringQuote) {
this.rule = null;
}
};
var PLURAL_OR_SELECT_ARG_TYPE_RE = /\s*(plural|select)\s*,\s*/g;
MessageFormatParser.prototype.rulePluralOrSelect = function rulePluralOrSelect() {
var match = this.searchRe(PLURAL_OR_SELECT_ARG_TYPE_RE);
if (match == null) {
this.errorExpecting();
}
var argType = match[1];
switch (argType) {
case 'plural': this.rule = this.rulePluralStyle; break;
case 'select': this.rule = this.ruleSelectStyle; break;
default: this.errorInParseLogic();
}
};
MessageFormatParser.prototype.rulePluralStyle = function rulePluralStyle() {
this.choices = Object.create(null);
this.ruleChoiceKeyword = this.rulePluralValueOrKeyword;
this.rule = this.rulePluralOffset;
};
MessageFormatParser.prototype.ruleSelectStyle = function ruleSelectStyle() {
this.choices = Object.create(null);
this.ruleChoiceKeyword = this.ruleSelectKeyword;
this.rule = this.ruleSelectKeyword;
};
var NUMBER_RE = /[0]|(?:[1-9][0-9]*)/g;
var PLURAL_OFFSET_RE = new RegExp('\\s*offset\\s*:\\s*(' + NUMBER_RE.source + ')', 'g');
MessageFormatParser.prototype.rulePluralOffset = function rulePluralOffset() {
var match = this.matchRe(PLURAL_OFFSET_RE);
this.pluralOffset = (match == null) ? 0 : parseInt(match[1], 10);
this.expressionMinusOffsetFn = subtractOffset(this.expressionFn, this.pluralOffset);
this.rule = this.rulePluralValueOrKeyword;
};
MessageFormatParser.prototype.assertChoiceKeyIsNew = function assertChoiceKeyIsNew(choiceKey, index) {
if (this.choices[choiceKey] !== undefined) {
var position = indexToLineAndColumn(this.text, index);
throw $interpolateMinErr('dupvalue',
'The choice “{0}” is specified more than once. Duplicate key is at line {1}, column {2} in text “{3}”',
choiceKey, position.line, position.column, this.text);
}
};
var SELECT_KEYWORD = /\s*(\w+)/g;
MessageFormatParser.prototype.ruleSelectKeyword = function ruleSelectKeyword() {
var match = this.matchRe(SELECT_KEYWORD);
if (match == null) {
this.parsedFn = new SelectMessage(this.expressionFn, this.choices).parsedFn;
this.rule = null;
return;
}
this.choiceKey = match[1];
this.assertChoiceKeyIsNew(this.choiceKey, match.index);
this.rule = this.ruleMessageText;
};
var EXPLICIT_VALUE_OR_KEYWORD_RE = new RegExp('\\s*(?:(?:=(' + NUMBER_RE.source + '))|(\\w+))', 'g');
MessageFormatParser.prototype.rulePluralValueOrKeyword = function rulePluralValueOrKeyword() {
var match = this.matchRe(EXPLICIT_VALUE_OR_KEYWORD_RE);
if (match == null) {
this.parsedFn = new PluralMessage(this.expressionFn, this.choices, this.pluralOffset, this.pluralCat).parsedFn;
this.rule = null;
return;
}
if (match[1] != null) {
this.choiceKey = parseInt(match[1], 10);
} else {
this.choiceKey = match[2];
}
this.assertChoiceKeyIsNew(this.choiceKey, match.index);
this.rule = this.ruleMessageText;
};
var BRACE_OPEN_RE = /\s*\{/g;
var BRACE_CLOSE_RE = /}/g;
MessageFormatParser.prototype.ruleMessageText = function ruleMessageText() {
if (!this.consumeRe(BRACE_OPEN_RE)) {
var position = indexToLineAndColumn(this.text, this.index);
throw $interpolateMinErr('reqopenbrace',
'The plural choice “{0}” must be followed by a message in braces at line {1}, column {2} in text “{3}”',
this.choiceKey, position.line, position.column, this.text);
}
this.msgStartIndex = this.index;
this.interpolationParts = new InterpolationParts(this.trustedContext, this.allOrNothing);
this.rule = this.ruleInInterpolationOrMessageText;
};
// Note: Since "\" is used as an escape character, don't allow it to be part of the
// startSymbol/endSymbol when I add the feature to allow them to be redefined.
var INTERP_OR_END_MESSAGE_RE = /\\.|{{|}/g;
var INTERP_OR_PLURALVALUE_OR_END_MESSAGE_RE = /\\.|{{|#|}/g;
var ESCAPE_OR_MUSTACHE_BEGIN_RE = /\\.|{{/g;
MessageFormatParser.prototype.advanceInInterpolationOrMessageText = function advanceInInterpolationOrMessageText() {
var currentIndex = this.index, match;
if (this.ruleChoiceKeyword == null) { // interpolation
match = this.searchRe(ESCAPE_OR_MUSTACHE_BEGIN_RE);
if (match == null) { // End of interpolation text. Nothing more to process.
this.textPart = this.text.substring(currentIndex);
this.index = this.text.length;
return null;
}
} else {
match = this.searchRe(this.ruleChoiceKeyword === this.rulePluralValueOrKeyword ?
INTERP_OR_PLURALVALUE_OR_END_MESSAGE_RE : INTERP_OR_END_MESSAGE_RE);
if (match == null) {
var position = indexToLineAndColumn(this.text, this.msgStartIndex);
throw $interpolateMinErr('reqendbrace',
'The plural/select choice “{0}” message starting at line {1}, column {2} does not have an ending closing brace. Text “{3}”',
this.choiceKey, position.line, position.column, this.text);
}
}
// match is non-null.
var token = match[0];
this.textPart = this.text.substring(currentIndex, match.index);
return token;
};
MessageFormatParser.prototype.ruleInInterpolationOrMessageText = function ruleInInterpolationOrMessageText() {
var currentIndex = this.index;
var token = this.advanceInInterpolationOrMessageText();
if (token == null) {
// End of interpolation text. Nothing more to process.
this.index = this.text.length;
this.interpolationParts.addText(this.text.substring(currentIndex));
this.rule = null;
return;
}
if (token[0] === '\\') {
// unescape next character and continue
this.interpolationParts.addText(this.textPart + token[1]);
return;
}
this.interpolationParts.addText(this.textPart);
if (token === '{{') {
this.pushState();
this.ruleStack.push(this.ruleEndMustacheInInterpolationOrMessage);
this.rule = this.ruleEnteredMustache;
} else if (token === '}') {
this.choices[this.choiceKey] = this.interpolationParts.toParsedFn(/*mustHaveExpression=*/false, this.text);
this.rule = this.ruleChoiceKeyword;
} else if (token === '#') {
this.interpolationParts.addExpressionFn(this.expressionMinusOffsetFn);
} else {
this.errorInParseLogic();
}
};
MessageFormatParser.prototype.ruleInterpolate = function ruleInterpolate() {
this.interpolationParts = new InterpolationParts(this.trustedContext, this.allOrNothing);
this.rule = this.ruleInInterpolation;
};
MessageFormatParser.prototype.ruleInInterpolation = function ruleInInterpolation() {
var currentIndex = this.index;
var match = this.searchRe(ESCAPE_OR_MUSTACHE_BEGIN_RE);
if (match == null) {
// End of interpolation text. Nothing more to process.
this.index = this.text.length;
this.interpolationParts.addText(this.text.substring(currentIndex));
this.parsedFn = this.interpolationParts.toParsedFn(this.mustHaveExpression, this.text);
this.rule = null;
return;
}
var token = match[0];
if (token[0] === '\\') {
// unescape next character and continue
this.interpolationParts.addText(this.text.substring(currentIndex, match.index) + token[1]);
return;
}
this.interpolationParts.addText(this.text.substring(currentIndex, match.index));
this.pushState();
this.ruleStack.push(this.ruleInterpolationEndMustache);
this.rule = this.ruleEnteredMustache;
};
MessageFormatParser.prototype.ruleInterpolationEndMustache = function ruleInterpolationEndMustache() {
var expressionFn = this.parsedFn;
this.popState();
this.interpolationParts.addExpressionFn(expressionFn);
this.rule = this.ruleInInterpolation;
};
MessageFormatParser.prototype.ruleEnteredMustache = function ruleEnteredMustache() {
this.parsedFn = null;
this.ruleStack.push(this.ruleEndMustache);
this.rule = this.ruleAngularExpression;
};
MessageFormatParser.prototype.ruleEndMustacheInInterpolationOrMessage = function ruleEndMustacheInInterpolationOrMessage() {
var expressionFn = this.parsedFn;
this.popState();
this.interpolationParts.addExpressionFn(expressionFn);
this.rule = this.ruleInInterpolationOrMessageText;
};
var INTERP_END_RE = /\s*}}/g;
MessageFormatParser.prototype.ruleEndMustache = function ruleEndMustache() {
var match = this.matchRe(INTERP_END_RE);
if (match == null) {
var position = indexToLineAndColumn(this.text, this.index);
throw $interpolateMinErr('reqendinterp',
'Expecting end of interpolation symbol, “{0}”, at line {1}, column {2} in text “{3}”',
'}}', position.line, position.column, this.text);
}
if (this.parsedFn == null) {
// If we parsed a MessageFormat extension, (e.g. select/plural today, maybe more some other
// day), then the result *has* to be a string and those rules would have already set
// this.parsedFn. If there was no MessageFormat extension, then there is no requirement to
// stringify the result and parsedFn isn't set. We set it here. While we could have set it
// unconditionally when exiting the Angular expression, I intend for us to not just replace
// $interpolate, but also to replace $parse in a future version (so ng-bind can work), and in
// such a case we do not want to unnecessarily stringify something if it's not going to be used
// in a string context.
this.parsedFn = this.$parse(this.expressionFn, this.stringifier);
this.parsedFn['exp'] = this.expressionFn['exp']; // Needed to pretend to be $interpolate for tests copied from interpolateSpec.js
this.parsedFn['expressions'] = this.expressionFn['expressions']; // Require this to call $compile.$$addBindingInfo() which allows Protractor to find elements by binding.
}
this.rule = null;
};
MessageFormatParser.prototype.ruleAngularExpression = function ruleAngularExpression() {
this.angularOperatorStack = [];
this.expressionStartIndex = this.index;
this.rule = this.ruleInAngularExpression;
};
function getEndOperator(opBegin) {
switch (opBegin) {
case '{': return '}';
case '[': return ']';
case '(': return ')';
default: return null;
}
}
function getBeginOperator(opEnd) {
switch (opEnd) {
case '}': return '{';
case ']': return '[';
case ')': return '(';
default: return null;
}
}
// TODO(chirayu): The interpolation endSymbol must also be accounted for. It
// just so happens that "}" is an operator so it's in the list below. But we
// should support any other type of start/end interpolation symbol.
var INTERESTING_OPERATORS_RE = /[[\]{}()'",]/g;
MessageFormatParser.prototype.ruleInAngularExpression = function ruleInAngularExpression() {
var match = this.searchRe(INTERESTING_OPERATORS_RE);
var position;
if (match == null) {
if (this.angularOperatorStack.length === 0) {
// This is the end of the Angular expression so this is actually a
// success. Note that when inside an interpolation, this means we even
// consumed the closing interpolation symbols if they were curlies. This
// is NOT an error at this point but will become an error further up the
// stack when the part that saw the opening curlies is unable to find the
// closing ones.
this.index = this.text.length;
this.expressionFn = this.$parse(this.text.substring(this.expressionStartIndex, this.index));
// Needed to pretend to be $interpolate for tests copied from interpolateSpec.js
this.expressionFn['exp'] = this.text.substring(this.expressionStartIndex, this.index);
this.expressionFn['expressions'] = this.expressionFn['expressions'];
this.rule = null;
return;
}
var innermostOperator = this.angularOperatorStack[0];
throw $interpolateMinErr('badexpr',
'Unexpected end of Angular expression. Expecting operator “{0}” at the end of the text “{1}”',
this.getEndOperator(innermostOperator), this.text);
}
var operator = match[0];
if (operator === '\'' || operator === '"') {
this.ruleStack.push(this.ruleInAngularExpression);
this.startStringAtMatch(match);
return;
}
if (operator === ',') {
if (this.trustedContext) {
position = indexToLineAndColumn(this.text, this.index);
throw $interpolateMinErr('unsafe',
'Use of select/plural MessageFormat syntax is currently disallowed in a secure context ({0}). At line {1}, column {2} of text “{3}”',
this.trustedContext, position.line, position.column, this.text);
}
// only the top level comma has relevance.
if (this.angularOperatorStack.length === 0) {
// todo: does this need to be trimmed?
this.expressionFn = this.$parse(this.text.substring(this.expressionStartIndex, match.index));
// Needed to pretend to be $interpolate for tests copied from interpolateSpec.js
this.expressionFn['exp'] = this.text.substring(this.expressionStartIndex, match.index);
this.expressionFn['expressions'] = this.expressionFn['expressions'];
this.rule = null;
this.rule = this.rulePluralOrSelect;
}
return;
}
if (getEndOperator(operator) != null) {
this.angularOperatorStack.unshift(operator);
return;
}
var beginOperator = getBeginOperator(operator);
if (beginOperator == null) {
this.errorInParseLogic();
}
if (this.angularOperatorStack.length > 0) {
if (beginOperator === this.angularOperatorStack[0]) {
this.angularOperatorStack.shift();
return;
}
position = indexToLineAndColumn(this.text, this.index);
throw $interpolateMinErr('badexpr',
'Unexpected operator “{0}” at line {1}, column {2} in text. Was expecting “{3}”. Text: “{4}”',
operator, position.line, position.column, getEndOperator(this.angularOperatorStack[0]), this.text);
}
// We are trying to pop off the operator stack but there really isn't anything to pop off.
this.index = match.index;
this.expressionFn = this.$parse(this.text.substring(this.expressionStartIndex, this.index));
// Needed to pretend to be $interpolate for tests copied from interpolateSpec.js
this.expressionFn['exp'] = this.text.substring(this.expressionStartIndex, this.index);
this.expressionFn['expressions'] = this.expressionFn['expressions'];
this.rule = null;
};