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AST Parser API

Web API to parse an expression into an Abstract Syntax Tree.

Easy, lightweight parsing solution to turn any expression and operators into an AST.

No external parsing tool needed.

Prerequisite

  • Maven
  • Java 8+

Starting the app

make build to build the app

make run to run it

Sample API Input

POST /api/parser/parse

Request

{
	"expression": "(x+y)*z",
	"operators": [
		{
			"symbol": "+",
			"precedence": 1,
			"type": "binary"
		},
		{
			"symbol": "-",
			"precedence": 1,
			"type": "binary"
		},
		{
			"symbol": "*",
			"precedence": 2,
			"type": "binary"
		},
		{
			"symbol": "/",
			"precedence": 2,
			"type": "binary"
		}
	]
}

Response

{
    "status": "success",
    "root": {
        "value": "*",
        "left": {
            "value": "+",
            "left": {
                "value": "x",
                "left": null,
                "right": null
            },
            "right": {
                "value": "y",
                "left": null,
                "right": null
            }
        },
        "right": {
            "value": "z",
            "left": null,
            "right": null
        }
    }
}

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