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// Function template for the following functions:
// * RegExpGlobalReplaceOpt
// * RegExpGlobalReplaceOptFunc
// * RegExpGlobalReplaceOptSubst
// * RegExpGlobalReplaceOptElemBase
// Define the following macro and include this file to declare function:
// * FUNC_NAME -- function name (required)
// e.g.
// #define FUNC_NAME RegExpGlobalReplaceOpt
// Define the following macro (without value) to switch the code:
// * SUBSTITUTION -- replaceValue is a string with "$"
// * FUNCTIONAL -- replaceValue is a function
// * ELEMBASE -- replaceValue is a function that returns an element
// of an object
// * none of above -- replaceValue is a string without "$"
// ES 2017 draft 03bfda119d060aca4099d2b77cf43f6d4f11cfa2 21.2.5.8
// steps 8.b-16.
// Optimized path for @@replace with the following conditions:
// * global flag is true
function FUNC_NAME(rx, S, lengthS, replaceValue, fullUnicode
#ifdef SUBSTITUTION
, firstDollarIndex
#endif
#ifdef ELEMBASE
, elemBase
#endif
)
{
// Step 8.b.
var lastIndex = 0;
rx.lastIndex = 0;
#if defined(FUNCTIONAL) || defined(SUBSTITUTION)
// Clone RegExp object here to avoid the effect of RegExp#compile,
// that may be called in replaceValue function.
rx = regexp_clone(rx);
#endif
// Step 12 (reordered).
var accumulatedResult = "";
// Step 13 (reordered).
var nextSourcePosition = 0;
// Step 11.
while (true) {
// Step 11.a.
var result = RegExpMatcher(rx, S, lastIndex);
// Step 11.b.
if (result === null)
break;
var nCaptures;
#if defined(FUNCTIONAL) || defined(SUBSTITUTION)
// Steps 14.a-b.
nCaptures = std_Math_max(result.length - 1, 0);
#endif
// Step 14.c (reordered).
var matched = result[0];
// Step 14.d.
var matchLength = matched.length;
// Steps 14.e-f.
var position = result.index;
lastIndex = position + matchLength;
// Steps g-j.
var replacement;
#if defined(FUNCTIONAL)
replacement = RegExpGetComplexReplacement(result, matched, S, position,
nCaptures, replaceValue,
true, -1);
#elif defined(SUBSTITUTION)
replacement = RegExpGetComplexReplacement(result, matched, S, position,
nCaptures, replaceValue,
false, firstDollarIndex);
#elif defined(ELEMBASE)
if (IsObject(elemBase)) {
var prop = GetStringDataProperty(elemBase, matched);
if (prop !== undefined) {
assert(typeof prop === "string", "GetStringDataProperty should return either string or undefined");
replacement = prop;
} else {
elemBase = undefined;
}
}
if (!IsObject(elemBase)) {
// Steps 14.a-b (reordered).
nCaptures = std_Math_max(result.length - 1, 0);
replacement = RegExpGetComplexReplacement(result, matched, S, position,
nCaptures, replaceValue,
true, -1);
}
#else
replacement = replaceValue;
#endif
// Step 14.l.ii.
accumulatedResult += Substring(S, nextSourcePosition,
position - nextSourcePosition) + replacement;
// Step 14.l.iii.
nextSourcePosition = lastIndex;
// Step 11.c.iii.2.
if (matchLength === 0) {
lastIndex = fullUnicode ? AdvanceStringIndex(S, lastIndex) : lastIndex + 1;
if (lastIndex > lengthS)
break;
}
}
// Step 15.
if (nextSourcePosition >= lengthS)
return accumulatedResult;
// Step 16.
return accumulatedResult + Substring(S, nextSourcePosition, lengthS - nextSourcePosition);
}
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