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Railroad / syntax diagram templates

Railroad — Arithmetic Expressions

Classic expr / term / factor precedence-climbing grammar for calculators and compilers.

Railroad / syntax diagramUML & SoftwareRailroad / syntax diagram syntax docs
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expr ::=term+-termterm ::=factor*/factorfactor ::=numberidentifier(expr)-factor

Make it your own.

# Operator precedence via layered rules
expr   ::= term { ( "+" | "-" ) term }
term   ::= factor { ( "*" | "/" ) factor }
factor ::= number | identifier | "(" expr ")" | "-" factor