ScaleValidator🛡️ ScaleValidator Library - Input Validation for PineScript
📢 ABOUT
ScaleValidator is a lightweight utility library that provides robust input validation for PineScript. It ensures your scripts receive valid arguments and throws helpful runtime errors when they don't.
✨ FEATURES
🛡️ Validation Methods
Validate inputs and throw descriptive runtime errors if invalid:
• isValidLocation() — Validate location strings
• isValidPosition() — Validate position strings
• isValidFormat() — Validate format strings
• isValidPOV() — Validate point-of-view (extend) strings
🔍 Helper Methods
Quick boolean checks without throwing errors:
• isLocationAbove() / isLocationBelow() — Check vertical location
• isPositionAbove() / isPositionCenter() / isPositionBelow() — Check position row
• isPositionLeft() / isPositionRight() — Check position column
💡 USAGE EXAMPLE
//@version=6
indicator("Validator Demo", overlay = true)
import cryptolinx/ScaleValidator/1 as v
// Validate inputs before using them
userPosition = input.string(position.top_center, "Position")
if v.isValidPosition(userPosition)
// Safe to use the position
label.new(bar_index, high, "Valid!",
xloc = xloc.bar_index,
style = label.style_label_down,
textcolor = color.white)
// Quick checks without throwing errors
if v.isPositionAbove(userPosition)
// Position is in top row
plotchar(close, char = "▲", location = location.abovebar)
📊 VALID CONSTANTS REFERENCE
Locations
• location.top — Top of pane
• location.bottom — Bottom of pane
• location.abovebar — Above price bar
• location.belowbar — Below price bar
• location.absolute — Absolute position
Positions (3x3 Grid)
• Top Row: top_left, top_center, top_right
• Middle Row: middle_left, middle_center, middle_right
• Bottom Row: bottom_left, bottom_center, bottom_right
Formats
• format.inherit — Inherit from parent
• format.percent — Percentage format
Point of View (Extend)
• extend.both — Extend in both directions
• extend.left — Extend to the left
• extend.right — Extend to the right
🔧 METHOD REFERENCE
Validators (throw runtime error if invalid)
• isValidLocation(string) → bool
• isValidPosition(string) → bool
• isValidFormat(string) → bool
• isValidPOV(string) → bool
Helpers (return bool, no errors)
• isLocationAbove(string) → bool
• isLocationBelow(string) → bool
• isPositionAbove(string) → bool
• isPositionCenter(string) → bool
• isPositionBelow(string) → bool
• isPositionLeft(string) → bool
• isPositionRight(string) → bool
🚀 WHY USE THIS?
• 🛡️ Defensive Programming — Catch invalid inputs early
• 📖 Helpful Errors — Descriptive messages show valid options
• ⚡ Lightweight — No dependencies, minimal overhead
• 🔗 Companion to ScalesDEV — Used internally by the Scale library
📋 CHANGELOG
✅ Added method badges (helper/validator)
✅ Created reference tables for valid constants
✅ Improved parameter descriptions
✅ Formatted return types
🙏 RELATED LIBRARIES
Check out Scales for building beautiful scale visualizations that use this validator!
Battries included! 🔋Happy coding! 🚀 @cryptolinx for the PulseWire community
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