A python module to parse cypher query string and generate AST.
$ git clone https://github.com/Mizzlr/pycypher
$ cd pycypher
$ python3 setup.py installOpen python3 interpreter with command python3 and run the following.
>>> import pycypher
>>> import json
>>> print(json.dumps(pycypher.parse('MATCH (n) RETURN Count(n);'), indent=2))
{
"result": [
{
"node": {
"parent": "Cypher",
"text": "",
"sourceInterval": [
-1,
-2
]
},
"children": {
"result": [],
"errors": []
}
},
{
"node": {
"parent": "Cypher",
"text": "MATCH (n) RETURN Count(n)",
"sourceInterval": [
0,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "Statement",
"text": "MATCH (n) RETURN Count(n)",
"sourceInterval": [
0,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "Query",
"text": "MATCH (n) RETURN Count(n)",
"sourceInterval": [
0,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "RegularQuery",
"text": "MATCH (n) RETURN Count(n)",
"sourceInterval": [
0,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "SingleQuery",
"text": "MATCH (n) RETURN Count(n)",
"sourceInterval": [
0,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "SinglePartQuery",
"text": "MATCH (n)",
"sourceInterval": [
0,
4
]
},
"children": {
"result": [
{
"node": {
"parent": "ReadingClause",
"text": "MATCH (n)",
"sourceInterval": [
0,
4
]
},
"children": {
"result": [
{
"node": {
"parent": "Match",
"text": "MATCH",
"sourceInterval": [
0,
0
]
},
"children": {
"parent": "Match",
"text": "MATCH",
"sourceInterval": [
0,
0
]
}
},
{
"node": {
"parent": "Match",
"text": " ",
"sourceInterval": [
1,
1
]
},
"children": {
"parent": "Match",
"text": " ",
"sourceInterval": [
1,
1
]
}
},
{
"node": {
"parent": "Match",
"text": "(n)",
"sourceInterval": [
2,
4
]
},
"children": {
"result": [
{
"node": {
"parent": "Pattern",
"text": "(n)",
"sourceInterval": [
2,
4
]
},
"children": {
"result": [
{
"node": {
"parent": "PatternPart",
"text": "(n)",
"sourceInterval": [
2,
4
]
},
"children": {
"result": [
{
"node": {
"parent": "AnonymousPatternPart",
"text": "(n)",
"sourceInterval": [
2,
4
]
},
"children": {
"result": [
{
"node": {
"parent": "PatternElement",
"text": "(n)",
"sourceInterval": [
2,
4
]
},
"children": {
"result": [
{
"node": {
"parent": "NodePattern",
"text": "(",
"sourceInterval": [
2,
2
]
},
"children": {
"parent": "NodePattern",
"text": "(",
"sourceInterval": [
2,
2
]
}
},
{
"node": {
"parent": "NodePattern",
"text": "n",
"sourceInterval": [
3,
3
]
},
"children": {
"result": [
{
"node": {
"parent": "Variable",
"text": "n",
"sourceInterval": [
3,
3
]
},
"children": {
"result": [
{
"node": {
"parent": "SymbolicName",
"text": "n",
"sourceInterval": [
3,
3
]
},
"children": {
"parent": "SymbolicName",
"text": "n",
"sourceInterval": [
3,
3
]
}
}
],
"errors": []
}
}
],
"errors": []
}
},
{
"node": {
"parent": "NodePattern",
"text": ")",
"sourceInterval": [
4,
4
]
},
"children": {
"parent": "NodePattern",
"text": ")",
"sourceInterval": [
4,
4
]
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
},
{
"node": {
"parent": "SinglePartQuery",
"text": " ",
"sourceInterval": [
5,
5
]
},
"children": {
"parent": "SinglePartQuery",
"text": " ",
"sourceInterval": [
5,
5
]
}
},
{
"node": {
"parent": "SinglePartQuery",
"text": "RETURN Count(n)",
"sourceInterval": [
6,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "Return",
"text": "RETURN",
"sourceInterval": [
6,
6
]
},
"children": {
"parent": "Return",
"text": "RETURN",
"sourceInterval": [
6,
6
]
}
},
{
"node": {
"parent": "Return",
"text": " ",
"sourceInterval": [
7,
7
]
},
"children": {
"parent": "Return",
"text": " ",
"sourceInterval": [
7,
7
]
}
},
{
"node": {
"parent": "Return",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "ReturnBody",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "ReturnItems",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "ReturnItem",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "Expression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "OrExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "XorExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "AndExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "NotExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "ComparisonExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "AddOrSubtractExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "MultiplyDivideModuloExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "PowerOfExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "UnaryAddOrSubtractExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "StringListNullOperatorExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "PropertyOrLabelsExpression",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "Atom",
"text": "Count(n)",
"sourceInterval": [
8,
11
]
},
"children": {
"result": [
{
"node": {
"parent": "FunctionInvocation",
"text": "Count",
"sourceInterval": [
8,
8
]
},
"children": {
"result": [
{
"node": {
"parent": "FunctionName",
"text": "",
"sourceInterval": [
8,
7
]
},
"children": {
"result": [],
"errors": []
}
},
{
"node": {
"parent": "FunctionName",
"text": "Count",
"sourceInterval": [
8,
8
]
},
"children": {
"result": [
{
"node": {
"parent": "SymbolicName",
"text": "Count",
"sourceInterval": [
8,
8
]
},
"children": {
"parent": "SymbolicName",
"text": "Count",
"sourceInterval": [
8,
8
]
}
}
],
"errors": []
}
}
],
"errors": []
}
},
{
"node": {
"parent": "FunctionInvocation",
"text": "(",
"sourceInterval": [
9,
9
]
},
"children": {
"parent": "FunctionInvocation",
"text": "(",
"sourceInterval": [
9,
9
]
}
},
{
"node": {
"parent": "FunctionInvocation",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "Expression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "OrExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "XorExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "AndExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "NotExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "ComparisonExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "AddOrSubtractExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "MultiplyDivideModuloExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "PowerOfExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "UnaryAddOrSubtractExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "StringListNullOperatorExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "PropertyOrLabelsExpression",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "Atom",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "Variable",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"result": [
{
"node": {
"parent": "SymbolicName",
"text": "n",
"sourceInterval": [
10,
10
]
},
"children": {
"parent": "SymbolicName",
"text": "n",
"sourceInterval": [
10,
10
]
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
},
{
"node": {
"parent": "FunctionInvocation",
"text": ")",
"sourceInterval": [
11,
11
]
},
"children": {
"parent": "FunctionInvocation",
"text": ")",
"sourceInterval": [
11,
11
]
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
}
],
"errors": []
}
},
{
"node": {
"parent": "Cypher",
"text": ";",
"sourceInterval": [
12,
12
]
},
"children": {
"parent": "Cypher",
"text": ";",
"sourceInterval": [
12,
12
]
}
},
{
"node": {
"parent": "Cypher",
"text": "<EOF>",
"sourceInterval": [
13,
13
]
},
"children": {
"parent": "Cypher",
"text": "<EOF>",
"sourceInterval": [
13,
13
]
}
}
],
"errors": []
}
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