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expression

Math expression evaluator using Shunting Yard algorithm.

Package Structure

  • dev.simplified.expression - Expression, ArrayStack, ValidationResult, VariableProvider
  • dev.simplified.expression.exception - ExpressionException, EvaluationException, InvalidExpressionException, UnknownFunctionException, UnknownOperatorException
  • dev.simplified.expression.function - BuiltinFunction, MathFunction, VarargFunction
  • dev.simplified.expression.operator - BuiltinOperator, MathOperator
  • dev.simplified.expression.shuntingyard - ShuntingYard
  • dev.simplified.expression.tokenizer - Token (base), Tokenizer, NumberToken, OperatorToken, FunctionToken, VariableToken, ArgumentSeparatorToken, OpenParenthesesToken, CloseParenthesesToken

Key Classes

  • Expression - main entry point: parse + evaluate string expressions
  • ArrayStack - zero-copy primitive double[] stack
  • ShuntingYard - infix-to-postfix conversion
  • Tokenizer - lexer producing typed Token subtypes

Dependencies

  • com.github.simplified-dev:collections:master-SNAPSHOT
  • com.github.simplified-dev:utils:master-SNAPSHOT
  • JetBrains annotations, Lombok

Build

./gradlew build
./gradlew test

Info

  • Java 21, Gradle (Kotlin DSL)
  • Group: dev.simplified, artifact: expression, version: 1.0.0
  • 24 source files, 7 packages, no tests