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Module std.json

JavaScript Object Notation

References

http://json.org/, http://seriot.ch/parsing_json.html

Example

import std.conv : to;

// parse a file or string of json into a usable structure
string s = `{ "language": "D", "rating": 3.5, "code": "42" }`;
JSONValue j = parseJSON(s);
// j and j["language"] return JSONValue,
// j["language"].str returns a string
writeln(j["language"].str); // "D"
writeln(j["rating"].floating); // 3.5

// check a type
long x;
if (const(JSONValue)* code = "code" in j)
{
    if (code.type() == JSONType.integer)
        x = code.integer;
    else
        x = to!int(code.str);
}

// create a json struct
JSONValue jj = [ "language": "D" ];
// rating doesnt exist yet, so use .object to assign
jj.object["rating"] = JSONValue(3.5);
// create an array to assign to list
jj.object["list"] = JSONValue( ["a", "b", "c"] );
// list already exists, so .object optional
jj["list"].array ~= JSONValue("D");

string jjStr = `{"language":"D","list":["a","b","c","D"],"rating":3.5}`;
writeln(jj.toString); // jjStr

Functions

NameDescription
parseJSON(json, maxDepth, options) Parses a serialized string and returns a tree of JSON values.
parseJSON(json, options) Parses a serialized string and returns a tree of JSON values.
toJSON() Takes a tree of JSON values and returns the serialized string.
toJSON(json, root, pretty, options)

Classes

NameDescription
JSONException Exception thrown on JSON errors

Structs

NameDescription
JSONValue JSON value node

Enums

NameDescription
JSONFloatLiteral String literals used to represent special float values within JSON strings.
JSONOptions Flags that control how json is encoded and parsed.
JSONType JSON type enumeration

Authors

Jeremie Pelletier, David Herberth

License

Boost License 1.0.