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The `json()` function parses the given string value as JSON.
Throws an exception if the given input value is not a string.
Throws an exception if the given input string cannot be parsed as JSON.
Returns the resulting value.
-- Testcase --
{%
print(join("\n", [
json("null"),
json("true"),
json("false"),
json("123"),
json("456.7890000"),
json("-1.4E10"),
json("1e309"),
json('"A string \u2600"'),
json("[ 1, 2, 3 ]"),
json('{ "test": [ 1, 2, 3 ] }'),
// surrounding white space is ignored
json(' [ 1, 2, 3 ] ')
]), "\n");
%}
-- End --
-- Expect stdout --
null
true
false
123
456.789
-1.4e+10
Infinity
A string ☀
[ 1, 2, 3 ]
{ "test": [ 1, 2, 3 ] }
[ 1, 2, 3 ]
-- End --
Passing a non-string value throws an exception.
-- Testcase --
{%
json(true);
%}
-- End --
-- Expect stderr --
Type error: Passed value is not a string
In line 2, byte 11:
` json(true);`
Near here ---^
-- End --
Unparseable JSON throws exceptions.
-- Testcase --
{%
json('[ "incomplete", "array" ');
%}
-- End --
-- Expect stderr --
Syntax error: Failed to parse JSON string: unexpected end of data
In line 2, byte 33:
` json('[ "incomplete", "array" ');`
Near here -------------------------^
-- End --
-- Testcase --
{%
json('invalid syntax');
%}
-- End --
-- Expect stderr --
Syntax error: Failed to parse JSON string: unexpected character
In line 2, byte 23:
` json('invalid syntax');`
Near here ---------------^
-- End --
-- Testcase --
{%
json('[] trailing garbage');
%}
-- End --
-- Expect stderr --
Syntax error: Trailing garbage after JSON data
In line 2, byte 28:
` json('[] trailing garbage');`
Near here --------------------^
-- End --
|
