I am trying to combine two Pine Script indicators (LuxAlgo Reversal Signals and VuManChu B Divergences) into a single script. I have recently migrated the script to Pine Script v6.
I am consistently encountering a "Syntax error at input "(" " error when defining functions. This specific error appears on lines where functions like f_top_fractal are declared.
Problem Summary: Despite various attempts to correctly declare functions in Pine Script v6, I keep getting a "Syntax error at input "(" " error. I suspect there might be a subtle rule regarding function declaration syntax in v6 that I'm missing, especially with array indexing in arguments or the exact structure required by the parser.
Error Message:
네, 알겠습니다. Stack Overflow 질문의 "Body" (본문) 섹션에 들어갈 내용을 깔끔하게 정리해서 한 번에 드릴게요.
아래 내용을 그대로 복사해서 Stack Overflow 질문 페이지의 "Body" (본문) 섹션에 붙여넣으시면 됩니다. <> Code 버튼을 눌러서 코드 블록 안에 넣는 것을 잊지 마세요.
I am trying to combine two Pine Script indicators (LuxAlgo Reversal Signals and VuManChu B Divergences) into a single script. I have recently migrated the script to Pine Script v6.
I am consistently encountering a "Syntax error at input "(" " error when defining functions. This specific error appears on lines where functions like f_top_fractal are declared.
Problem Summary: Despite various attempts to correctly declare functions in Pine Script v6, I keep getting a "Syntax error at input "(" " error. I suspect there might be a subtle rule regarding function declaration syntax in v6 that I'm missing, especially with array indexing in arguments or the exact structure required by the parser.
Error Message: Syntax error at input "("
(Please note: The exact line number in the error message changes as I try different fixes, but the error type remains the same and points to function declaration lines, such as function f_top_fractal(src).)
What I have tried so far (Troubleshooting Steps):
//@version=6.function keyword for all function declarations.return statements for function output.(.var func_name = (args) => expression syntax (both with and without parentheses around single arguments).if bar_index >= 50 blocks).Despite these efforts, the syntax error persists. Could someone please review my full script and provide guidance on the correct way to declare functions in Pine Script v6 to resolve this "Syntax error at input "(" " error?
My Goal: My objective is to compile this script successfully and add it to my TradingView chart.
Full Script:
//@version=6
// This work is licensed under a Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) [https://creativecommons.org/licenses/by-nc-sa/4.0/](https://creativecommons.org/licenses/by-nc-sa/4.0/)
// © LuxAlgo
indicator("Integrated Long Buy Signal", "Intg. Long", true, max_labels_count = 500)
//-----------------------------------------------------------------------------}
// User Defined Types (FROM LUXALGO)
//-----------------------------------------------------------------------------{
type bar
float o
float h
float l
float c
int i
type trb
int bSC
float bSH
float bSL
int sSC
float sSH
float sSL
type tre
int bCC
float bC8 = 0.0
float bCHt
float bCH
float bCL
float bCLt
float bCD
int sCC
float sC8 = 0.0
float sCHt
float sCH
float sCL
float sCLt
float sCT
//-----------------------------------------------------------------------------}
// **원래의 LuxAlgo/VuManChu 설정들 (여기서 모든 input 변수들을 선언)**
// WaveTrend Settings (from VuManChu)
wtChannelLen = input.int(9, title = 'WT Channel Length', group = 'WaveTrend Settings')
wtAverageLen = input.int(12, title = 'WT Average Length', group = 'WaveTrend Settings')
wtMALen = input.int(3, title = 'WT MA Length', group = 'WaveTrend Settings')
wtMASource = input.source(hlc3, title = 'WT MA Source', group = 'WaveTrend Settings')
osLevel = input.int(-53, title = 'WT Oversold Level 1', group = 'WaveTrend Settings')
obLevel = input.int(53, title = 'WT Overbought Level 1', group = 'WaveTrend Settings')
osLevel3 = input.int(-75, title = 'WT Oversold Level 3', group = 'WaveTrend Settings')
wtDivOBLevel = input.int(45, 'WT Bearish Divergence min', group = 'WaveTrend Settings')
wtDivOSLevel = input.int(-65, 'WT Bullish Divergence min', group = 'WaveTrend Settings')
wtDivOBLevel_add = input.int(15, 'WT 2nd Bearish Divergence', group = 'WaveTrend Settings')
wtDivOSLevel_add = input.int(-40, 'WT 2nd Bullish Divergence 15 min', group = 'WaveTrend Settings')
showHiddenDiv_nl = input.bool(true, 'Not apply OB/OS Limits on Hidden Divergences', group = 'WaveTrend Settings')
// RSI MFI Settings (from VuManChu)
rsiMFIperiod = input.int(60, 'MFI Period', group = 'MFI Settings')
rsiMFIMultiplier = input.float(150, 'MFI Area multiplier', group = 'MFI Settings')
rsiMFIPosY = input.float(2.5, 'MFI Area Y Pos', group = 'MFI Settings')
// RSI Settings (from VuManChu)
rsiSRC = input.source(close, 'RSI Source', group = 'RSI Settings')
rsiLen = input.int(14, 'RSI Length', group = 'RSI Settings')
rsiDivOBLevel = input.int(60, 'RSI Bearish Divergence min', group = 'RSI Settings')
rsiDivOSLevel = input.int(30, 'RSI Bullish Divergence min', group = 'RSI Settings')
// Stoch Settings (from VuManChu)
stochUseLog = input.bool(true, 'Use Log?', group = 'Stoch Settings')
stochAvg = input.bool(false, 'Use Average of both K & D', group = 'Stoch Settings')
stochSRC = input.source(close, 'Stochastic RSI Source', group = 'Stoch Settings')
stochLen = input.int(14, 'Stochastic RSI Length', group = 'Stoch Settings')
stochRsiLen = input.int(14, 'RSI Length ', group = 'Stoch Settings')
stochKSmooth = input.int(3, 'Stochastic RSI K Smooth', group = 'Stoch Settings')
stochDSmooth = input.int(3, 'Stochastic RSI D Smooth', group = 'Stoch Settings')
// Sommi Settings (from VuManChu)
sommiVwapTF = input.string('720', 'Sommi F. Wave timeframe', group = 'Sommi Settings')
sommiVwapBullLevel = input.int(0, 'F. Wave Bull Level (more than)', group = 'Sommi Settings')
soomiFlagWTBullLevel = input.int(0, 'WT Bull Level (less than)', group = 'Sommi Settings')
soomiRSIMFIBullLevel = input.int(0, 'Money flow Bull Level (more than)', group = 'Sommi Settings')
sommiDiamondShow = input.bool(false, title = 'Show Sommi diamond', group = 'Sommi Settings')
sommiHTCRes = input.string('60', 'HTF Candle Res. 1', group = 'Sommi Settings')
sommiHTCRes2 = input.string('240', 'HTF Candle Res. 2', group = 'Sommi Settings')
soomiDiamondWTBullLevel = input.int(0, 'WT Bull Level (Less than)', group = 'Sommi Settings')
// LuxAlgo Trade Setups (tso)
tso = input.string('Exhaustion', 'Phase Specific Trade Setup Options', options = ['Momentum', 'Exhaustion', 'Qualified', 'None'], group = "LuxAlgo Trade Setups")
// ==============================================================================
// VuManChu B Divergences - FUNCTIONS (if bar_index >= 50 블록 밖으로 이동)
// ==============================================================================
// **수정: 모든 함수 정의를 전역 스코프(if bar_index >= 50 블록 밖)로 이동**
// **수정: 함수 이름과 괄호 사이 공백 제거, 들여쓰기 및 return 명시 재확인**
function f_top_fractal(src)
return src[4] < src[2] and src[3] < src[2] and src[2] > src[1] and src[2] > src[0]
function f_bot_fractal(src)
return src[4] > src[2] and src[3] > src[2] and src[2] < src[1] and src[2] < src[0]
function f_fractalize(src)
return f_top_fractal(src) ? 1 : f_bot_fractal(src) ? -1 : 0
function f_findDivs(src, topLimit, botLimit, useLimits)
fractalTop_cond = f_fractalize(src) > 0 and (useLimits ? src[2] >= topLimit : true)
fractalBot_cond = f_fractalize(src) < 0 and (useLimits ? src[2] <= botLimit : true)
fractalTop_val = fractalTop_cond ? src[2] : na
fractalBot_val = fractalBot_cond ? src[2] : na
highPrev = ta.valuewhen(fractalTop_cond, fractalTop_val, 0)[2]
highPrice = ta.valuewhen(fractalTop_cond, high[2], 0)[2]
lowPrev = ta.valuewhen(fractalBot_cond, fractalBot_val, 0)[2]
lowPrice = ta.valuewhen(fractalBot_cond, low[2], 0)[2]
bearSignal = fractalTop_cond and high[2] > highPrice and src[2] < highPrev
bullSignal = fractalBot_cond and low[2] < lowPrice and src[2] > lowPrev
bearDivHidden = fractalTop_cond and high[2] < highPrice and src[2] > highPrev
bullDivHidden = fractalBot_cond and low[2] > lowPrice and src[2] < lowPrev
return [fractalTop_cond, fractalBot_cond, lowPrev, bearSignal, bullSignal, bearDivHidden, bullDivHidden]
function f_rsimfi(_period, _multiplier, _tf)
return request.security(syminfo.tickerid, _tf, ta.sma(((close - open) / (high - low)) * _multiplier, _period) - rsiMFIPosY)
function f_wavetrend(src, chlen, avg, malen, tf)
tfsrc = request.security(syminfo.tickerid, tf, src)
esa = ta.ema(tfsrc, chlen)
de = ta.ema(math.abs(tfsrc - esa), chlen)
ci = (tfsrc - esa) / (0.015 * de)
wt1 = request.security(syminfo.tickerid, tf, ta.ema(ci, avg))
wt2 = request.security(syminfo.tickerid, tf, ta.sma(wt1, malen))
wtVwap = wt1 - wt2
wtOversold = wt2 <= osLevel
wtOverbought = wt2 >= obLevel
wtCross = ta.cross(wt1, wt2)
wtCrossUp = wt2 - wt1 <= 0
wtCrossDown = wt2 - wt1 >= 0
return [wt1, wt2, wtOversold, wtOverbought, wtCross, wtCrossUp, wtCrossDown, wtVwap]
function f_stochrsi(_src, _stochlen, _rsilen, _smoothk, _smoothd, _log, _avg)
src = _log ? math.log(_src) : _src
rsi = ta.rsi(src, _rsilen)
kk = ta.sma(ta.stoch(rsi, rsi, rsi, _stochlen), _smoothk)
d1 = ta.sma(kk, _smoothd)
avg_1 = (kk + d1) / 2
k = _avg ? avg_1 : kk
return [k, d1]
function f_getTFCandle(_tf)
[htf_open, htf_high, htf_low, htf_close] = request.security(syminfo.tickerid, _tf, [open, high, low, close], barmerge.gaps_off, barmerge.lookahead_on)
var float _open_ha = na
var float _close_ha = na
var float _high_ha = na
var float _low_ha = na
if bar_index == 0
_open_ha := htf_open
_close_ha := htf_close
_high_ha := htf_high
_low_ha := htf_low
else
_open_ha := math.avg(_open_ha[1], _close_ha[1])
_close_ha := math.avg(htf_open, htf_high, htf_low, htf_close)
_high_ha := math.max(htf_high, math.max(_open_ha, _close_ha))
_low_ha := math.min(htf_low, math.min(_open_ha, _close_ha))
newBar = ta.change(htf_open)
candleBodyDir = _close_ha > _open_ha
return [ _open_ha, _close_ha, _high_ha, _low_ha, candleBodyDir, newBar]
function f_findSommiFlag(tf, wt1, wt2, rsiMFI_arg, wtCross, wtCrossUp)
[hwt1, hwt2, hwtOversold, hwtOverbought, hwtCross, hwtCrossUp, hwtCrossDown, hwtVwap] = f_wavetrend(wtMASource, wtChannelLen, wtAverageLen, wtMALen, tf)
bullPattern = rsiMFI_arg > soomiRSIMFIBullLevel and
wt2 < soomiFlagWTBullLevel and
wtCross and
wtCrossUp and
hwtVwap > sommiVwapBullLevel
return [bullPattern, hwtVwap]
function f_findSommiDiamond(tf, tf2, wt2, wtCross, wtCrossUp)
[_open, _close, _high, _low, candleBodyDir, newBar] = f_getTFCandle(tf)
[_open2, _close2, _high2, _low2, candleBodyDir2, newBar2] = f_getTFCandle(tf2)
bullPattern = wt2 <= soomiDiamondWTBullLevel and
wtCross and
wtCrossUp and
candleBodyDir and
candleBodyDir2
return [bullPattern]
// ==============================================================================
// LuxAlgo - Reversal Signals - Adapted for integration (다시 메인 블록으로)
// ==============================================================================
// LuxAlgo General Calculations (minimal required)
var b = bar.new(o=open, h=high, l=low, c=close, i=bar_index)
var S = trb.new()
var C = tre.new()
// **수정: 런타임 오류 방지 - 충분한 바가 로드되었는지 확인**
if bar_index >= 50
con = b.c < (b[4]).c
if con
S.bSC := (S[0]).bSC == 9 ? 1 : (S[0]).bSC + 1
S.sSC := 0
else
S.sSC := (S[0]).sSC == 9 ? 1 : (S[0]).sSC + 1
S.bSC := 0
pbS = (b.l <= (b[3]).l and b.l <= (b[2]).l) or ((b[1]).l <= (b[3]).l and (b[1]).l <= (b[2]).l)
bC8 = (S[1]).bSC == 8 and (S[0]).sSC == 1
sR = ta.highest(high, 9)
bSR = 0.0
bSR := (S[0]).bSC == 9 or bC8 ? sR : b.c > bSR[1] ? 0 : bSR[1]
if (S[0]).bSC == 1
S.bSL := b.l
if (S[0]).bSC > 0
S.bSL := math.min(b.l, (S[0]).bSL)
if b.l == (S[0]).bSL
S.bSH := b.h
psS = (b.h >= (b[3]).h and b.h >= (b[2]).h) or ((b[1]).h >= (b[3]).h and (b[1]).h >= (b[2]).h)
sC8 = (S[1]).sSC == 8 and (S[0]).bSC == 1
sS = ta.lowest(low, 9)
sSS = 0.0
sSS := (S[0]).sSC == 9 or sC8 ? sS : b.c < sSS[1] ? 0 : sSS[1]
if (S[0]).sSC == 1
S.sSH := b.h
if (S[0]).sSC > 0
S.sSH := math.max(b.h, (S[0]).sSH)
if b.h == (S[0]).sSH
S.sSL := b.l
// LuxAlgo Trend Exhaustion Phase (minimal required for bPFc)
bCC = b.c <= (b[2]).l
b13 = b.c <= (b[2]).l and b.l >= (C[0]).bC8
var sbC = false
sbC := if (S[0]).bSC == 9 and (C[0]).bCC == 0 and (pbS or (pbS[1]))
true
else
if (S[0]).sSC == 9 or (C[0]).bCC == 13 or b.c > bSR
false
else
sbC[1]
C.bCC := sbC ? (S[0]).bSC == 9 ? bCC ? 1 : 0 : bCC ? (C[0]).bCC + 1 : (C[0]).bCC : 0
C.bCC := (C[0]).bCC == 13 and b13 ? (C[0]).bCC - 1 : (C[0]).bCC
if (C[0]).bCC == 8 and (C[0]).bCC != (C[1]).bCC
C.bC8 := b.c
if (C[0]).bCC == 1
C.bCLt := b.l
C.bCHt := b.h
if sbC
C.bCHt := math.max(b.h, (C[0]).bCHt)
C.bCLt := math.min(b.l, (C[0]).bCLt)
if b.h == (C[0]).bCHt
C.bCL := b.l
if b.l == (C[0]).bCLt
C.bCH := b.h
sCD = 2 * (C[0]).sCHt - (C[0]).sCL
sCD := (C[0]).sCC == 13 ? 2 * (C[0]).sCHt - (C[0]).sCL : b.c > sCD[1] or ((C[0]).sCT == 0 and (C[0]).bCC == 13) ? 0. : sCD[1]
sCT = 2 * (C[0]).sCLt - (C[0]).sCH
sCT := (C[0]).sCC == 13 ? sCT : b.c < sCT[1] or ((sCD[0]) == 0 and (C[0]).bCC == 13) ? 0. : sCT[1]
C.sCT := sCT
// LuxAlgo Trade Setups (tso)
bBl9 = ta.valuewhen((S[0]).bSC == 9 , (b[0]).i, 0)
bBp9 = ta.valuewhen((S[0]).bSC == 9 , (b[0]).i, 1)
bB13 = ta.valuewhen((C[0]).bCC == 13, (b[0]).i, 0)
sBl9 = ta.valuewhen((S[0]).sSC == 9 , (b[0]).i, 0)
sBp9 = ta.valuewhen((S[0]).sSC == 9 , (b[0]).i, 1)
sB13 = ta.valuewhen((C[0]).sCC == 13, (b[0]).i, 0)
trdS = tso != 'None'
bQC = (bBl9 > bB13) and (bB13 > bBp9) and (bBp9 > sBl9)
bPFO = tso == 'Momentum' ? (S[0]).bSC == 9 or bC8 : tso == 'Exhaustion' ? (C[5]).bCC == 13 : (S[0]).bSC == 9 and bQC
var sbPF = false
var bPFc_val = false
sbPF := if bPFO
true
else
if bPFc_val
false
else
sbPF[1]
bPFc_val := sbPF and b.c > (b[4]).c and (b[1]).c < (b[5]).c
// ==============================================================================
// CALCULATE INDICATORS (if bar_index >= 50 블록 안으로 이동)
// ==============================================================================
rsiMFI = f_rsimfi(rsiMFIperiod, rsiMFIMultiplier, timeframe.period)
// Calculates WaveTrend
[wt1, wt2, wtOversold, wtOverbought, wtCross, wtCrossUp, wtCrossDown, wtVwap] = f_wavetrend(wtMASource, wtChannelLen, wtAverageLen, wtMALen, timeframe.period)
// Stochastic RSI
[stochK, stochD] = f_stochrsi(stochSRC, stochLen, stochRsiLen, stochKSmooth, stochDSmooth, stochUseLog, stochAvg)
// Sommi flag
[sommiBullish, hvwap] = f_findSommiFlag(sommiVwapTF, wt1, wt2, rsiMFI, wtCross, wtCrossUp)
//Sommi diamond
[sommiBullishDiamond] = f_findSommiDiamond(sommiHTCRes, sommiHTCRes2, wt2, wtCross, wtCrossUp)
// WT Divergences
wtDivOBLevel = input.int(45, 'WT Bearish Divergence min', group = 'WaveTrend Settings')
wtDivOSLevel = input.int(-65, 'WT Bullish Divergence min', group = 'WaveTrend Settings')
wtDivOBLevel_add = input.int(15, 'WT 2nd Bearish Divergence', group = 'WaveTrend Settings')
wtDivOSLevel_add = input.int(-40, 'WT 2nd Bullish Divergence 15 min', group = 'WaveTrend Settings')
showHiddenDiv_nl = input.bool(true, 'Not apply OB/OS Limits on Hidden Divergences', group = 'WaveTrend Settings')
[wtFractalTop, wtFractalBot, wtLow_prev, wtBearDiv, wtBullDiv, wtBearDivHidden, wtBullDivHidden] = f_findDivs(wt2, wtDivOBLevel, wtDivOSLevel, true)
[wtFractalTop_add, wtFractalBot_add, wtLow_prev_add, wtBearDiv_add, wtBullDiv_add, wtBearDivHidden_add, wtBullDivHidden_add] = f_findDivs(wt2, wtDivOBLevel_add, wtDivOSLevel_add, true)
[wtFractalTop_nl, wtFractalBot_nl, wtLow_prev_nl, wtBearDiv_nl, wtBullDiv_nl, wtBearDivHidden_nl, wtBullDivHidden_nl] = f_findDivs(wt2, 0, 0, false)
wtBullDivHidden_ = showHiddenDiv_nl ? wtBullDivHidden_nl : wtBullDivHidden
// RSI Divergences
rsiSRC = input.source(close, 'RSI Source', group = 'RSI Settings')
rsiLen = input.int(14, 'RSI Length', group = 'RSI Settings')
rsi = ta.rsi(rsiSRC, rsiLen)
rsiDivOBLevel = input.int(60, 'RSI Bearish Divergence min', group = 'RSI Settings')
rsiDivOSLevel = input.int(30, 'RSI Bullish Divergence min', group = 'RSI Settings')
[rsiFractalTop, rsiFractalBot, rsiLow_prev, rsiBearDiv, rsiBullDiv, rsiBearDivHidden, rsiBullDivHidden] = f_findDivs(rsi, rsiDivOBLevel, rsiDivOSLevel, true)
[rsiFractalTop_nl, rsiFractalBot_nl, rsiLow_prev_nl, rsiBearDiv_nl, rsiBullDiv_nl, rsiBearDivHidden_nl, rsiBullDivHidden_nl] = f_findDivs(rsi, 0, 0, false)
rsiBullDivHidden_ = showHiddenDiv_nl ? rsiBullDivHidden_nl : rsiBullDivHidden
// Stoch Divergences
[stochFractalTop, stochFractalBot, stochLow_prev, stochBearDiv, stochBullDiv, stochBearDivHidden, stochBullDivHidden] = f_findDivs(stochK, 0, 0, false)
// Small Circles WT Cross
buySignal = wtCross and wtCrossUp and wtOversold
buySignalDiv = (wtBullDiv) or
(wtBullDiv_add) or
(stochBullDiv) or
(rsiBullDiv)
// Gold Buy
lastRsi = ta.valuewhen(wtFractalBot, rsi[2], 0)[2]
wtGoldBuy = ((wtBullDiv) or (rsiBullDiv)) and (wtLow_prev <= osLevel3) and (wt2 > osLevel3) and (wtLow_prev - wt2 <= -5) and (lastRsi < 30)
// } CALCULATE INDICATORS
// ==============================================================================
// INTEGRATED LONG BUY SIGNAL
// ==============================================================================
// Combined Long Signal Logic
bool combinedLongSignal = bPFc_val and (buySignal or buySignalDiv or wtGoldBuy or sommiBullish or sommiBullishDiamond)
// Plotting the combined signal
plotshape(combinedLongSignal,
title='Integrated Long Buy Signal',
location=location.belowbar,
color=color.new(color.blue, 0),
style=shape.triangleup,
size=size.normal)
// Alert for the combined signal
alertcondition(combinedLongSignal,
'Integrated Long Buy Signal!',
'LuxAlgo Price Flip + VuManChu Bullish Signals')
Your first attempt should be to read the documentation.
Syntax is:
<identifier>(<list of arguments>) =>
<variable declaration>
...
<variable declaration or expression>
There should be no function keyword and you are missing the => at the end.