/pine-developer

name: pine-developer
description: Writes production-quality Pine Script v6 code following TradingView guidelines. Use when implementing indicators, strategies, or any Pine Script code.
allowed-tools: Read, Write, Edit, Glob, Grep, Bash

Pine Script Developer

Specialized in writing production-quality Pine Script v6 code for TradingView.

⚠️ CRITICAL: Pine Script v6 2025 Updates

**These updates are essential for writing correct, modern Pine Script code:**

December 2025: Updated Line Wrapping Rules

Expressions in parentheses now support flexible indentation:

// ✅ NOW VALID - Any indentation inside parentheses
plot(series,
    title="My Plot",    // Can use any indentation
    color=color.blue)

// ✅ Also valid
longCondition = (ta.crossover(ema50, ema200) and
    rsi < 30 and
    volume > ta.sma(volume, 20))

// ⚠️ STILL REQUIRED outside parentheses - non-multiple-of-4 indentation
longCondition = ta.crossover(ema50, ema200) and
     rsi < 30   // Must NOT be multiple of 4 spaces

March 2025: BREAKING CHANGE - For Loop Dynamic Boundaries

`for` loops now evaluate `to_num` **before every iteration**, not just once.

**PREFERRED: Use `for...in` loops for collections:**

// ✅ BEST: Use for...in for arrays (safe, clean, preferred)
for element in myArray
    // Process element directly

// ✅ BEST: Use for...in with index when needed
for [index, element] in myArray
    // Have both index and value

// ✅ for...in works with arrays, matrices, and maps
for [key, value] in myMap
    // Iterate key-value pairs

**If you must use traditional `for` loop:**

// ⚠️ BREAKING: This creates infinite loop!
var arr = array.new<int>()
for i = 0 to array.size(arr)  // Re-evaluated each iteration
    array.push(arr, i)  // Array grows, loop never ends!

// ✅ FALLBACK: Cache the boundary if using traditional for
size = array.size(arr)
for i = 0 to size
    array.push(arr, i)

**Note:** `for...in` allows modifying array/matrix sizes during iteration. Maps cannot be resized during `for...in` - use `map.keys()` array instead.

February 2025: Scope Limit Removed

• Previously limited to 550 total scopes
• Now **unlimited** scopes across functions, methods, loops, conditionals, types, and enums

February 2025: Bid/Ask Variables

// Only available on 1T (tick) timeframe
bidPrice = bid  // Highest buyer price (na on other timeframes)
askPrice = ask  // Lowest seller price (na on other timeframes)

Pine Script v6 2025 New Features

July 2025: Input `active` Parameter

All input functions now support conditional activation:

useCustomMA = input.bool(false, "Use Custom MA")
customMALength = input.int(20, "Custom MA Length",
    active=useCustomMA,  // Grayed out when useCustomMA is false
    tooltip="Only available when 'Use Custom MA' is enabled")

July 2025: `syminfo.current_contract`

// For continuous futures - returns underlying contract ticker
currentContract = syminfo.current_contract  // Returns na for non-continuous

November 2025: `syminfo.isin`

// International Securities Identification Number (12 chars)
isinCode = syminfo.isin  // Empty string if unavailable

September 2025: Plot Line Styles

plot(series, linestyle=plot.linestyle_solid)   // Default
plot(series, linestyle=plot.linestyle_dashed)  // Dashed line
plot(series, linestyle=plot.linestyle_dotted)  // Dotted line

October 2025: Enhanced `time()` and `time_close()`

New `timeframe_bars_back` parameter:

// Get time from 5 bars back on the DAILY timeframe (not current chart)
dailyTimeBack = time("D", timeframe_bars_back=5)

// Positive = past bars, Negative = future (expected) timestamps
futureTime = time("D", timeframe_bars_back=-1)  // Expected next bar

August 2025: Increased String Length

• Maximum string length: **40,960 characters** (was 4,096)

June 2025: Library Constant Exports

// In library:
//@version=6
library("MyLib")
export const float PI = 3.14159265359
export const int MAX_BARS = 500
export const string VERSION = "1.0.0"

May 2025: `time_close` on Non-Time-Based Charts

For Renko, Line Break, Kagi, Point & Figure, Range charts:

• `time_close` of open realtime bar now returns `na`
• `time_close[1]` now works immediately after bar closes

April 2025: Percentage-Based Ticker Styles

// New "PercentageLTP" style for percentage box sizing
renkoTicker = ticker.renko(syminfo.tickerid, "PercentageLTP", 1.0)
kagiTicker = ticker.kagi(syminfo.tickerid, "PercentageLTP", 0.5)
pnfTicker = ticker.pointfigure(syminfo.tickerid, "PercentageLTP", 1.0)

March 2025: `box.set_xloc()`

// Modify box x-coordinates after creation
box.set_xloc(myBox, left, right, xloc.bar_index)
box.set_xloc(myBox, leftTime, rightTime, xloc.bar_time)

CRITICAL: Line Wrapping Rules (Updated December 2025)

Inside Parentheses (FLEXIBLE)

// ✅ Any indentation works inside ()
plot(series,
    title="Plot",
        color=color.blue,  // Different indentation OK
    linewidth=2)

indicator("Title",
    overlay=true,
    max_bars_back=500)

Outside Parentheses (STRICT)

// ✅ CORRECT - Non-multiple-of-4 indentation
longCondition = ta.crossover(ema50, ema200) and
     rsi < 30 and
     volume > ta.sma(volume, 20)

// ❌ WRONG - Multiple of 4 (or same level)
longCondition = ta.crossover(ema50, ema200) and
    rsi < 30  // Error: 4 spaces

longCondition = ta.crossover(ema50, ema200) and
rsi < 30  // Error: same indentation

CRITICAL: Ternary Operators - Keep on ONE Line

// ❌ NEVER split ternary across lines
text = condition ?
    "value1" :
    "value2"  // ERROR!

// ✅ ALWAYS keep on one line
text = condition ? "value1" : "value2"

// ✅ For long ternaries, use intermediate variables
trueText = str.format("Long value {0}", param1)
falseText = str.format("Other va