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//! Error types
/// A list of all error variants used by this module.
#[derive(Debug)]
pub enum ErrorType {
/// Empty JSON document.
E100,
/// Raw use of control characters in JSON string.
E101,
/// Illegal character "t" after structural token. Expected comma or colon.
E103,
/// No more graphemes to parse.
E104,
/// Invalid character in literal name.
E105,
/// Invalid literal.
E106,
/// Illegal character "f" after structural token. Expected comma or colon.
E107,
/// Illegal character "n" after structural token. Expected comma or colon.
E108,
/// Illegal number after structural token. Expected comma or colon.
E109,
/// Illegal non ASCII decimal digit character in number.
E110,
/// Numbers cannot contain leading zeros.
E111,
/// Could not parse out of range JSON number.
E112,
/// Could not parse JSON number.
E113,
/// Illegal string after structural token. Expected comma or colon.
E114,
// Invalid escape character in JSON string.
E116,
// Invalid character found in Unicode escape sequence.
E117,
/// Invalid Unicode grapheme in JSON string.
E118,
/// Invalid Unicode escape sequence in second surrogate pair.
E119,
/// Unexpected comma at the start of JSON document.
E122,
/// Unexpected comma after structural token.
E123,
/// Invalid use of comma after document root value.
E124,
/// Illegal begin-array after JSON value.
E125,
/// Illegal end-array. No begin-array match.
E126,
/// Unterminated array.
E127,
/// Unterminated object.
E128,
/// Illegal end-array after comma.
E129,
/// Illegal begin-object after JSON value.
E130,
/// Illegal end-object. No begin-object match.
E131,
/// Illegal end-object after comma.
E132,
/// Illegal end-array after colon.
E133,
/// Illegal end-object after colon.
E134,
/// Invalid object member. Member value does not exist.
E135,
/// Invalid use of colon.
E136,
/// Invalid use of number as object name.
E137,
// Invalid use of true as object name.
E138,
/// Invalid use of false as object name.
E139,
// Invalid use of null as object name.
E140,
/// Invalid object member
E141,
/// Invalid use of array as object name.
E142,
/// Invalid use of object as object name.
E143,
/// Duplicate object name.
E144,
}
/// Used to represent the various error variants in this module.
impl ErrorType {
/// Return the error description.
///
/// **Examples**
///
/// ```rust
/// assert_eq!(jsonprima::ErrorType::E104.description(), "No more graphemes to parse.");
/// ```
///
/// ```rust
/// // Invalid `true` root value in JSON document.
/// let text: &str = "trua";
/// let errors = jsonprima::validate(&text);
/// let description = errors.get(0).unwrap().err.description();
/// assert_eq!(description, "Invalid character in literal name.");
/// ```
pub fn description(&self) -> &str {
match self {
ErrorType::E100 => "Empty JSON document.",
ErrorType::E101 => "Raw use of control characters in JSON string.",
ErrorType::E103 => {
"Illegal character \"t\" after structural token. Expected comma or colon."
}
ErrorType::E104 => "No more graphemes to parse.",
ErrorType::E105 => "Invalid character in literal name.",
ErrorType::E106 => "Invalid literal.",
ErrorType::E107 => {
"Illegal character \"f\" after structural token. Expected comma or colon."
}
ErrorType::E108 => {
"Illegal character \"n\" after structural token. Expected comma or colon."
}
ErrorType::E109 => {
"Illegal number after structural token. Expected comma or colon."
}
ErrorType::E110 => "Illegal non ASCII decimal digit character in number.",
ErrorType::E111 => "Numbers cannot contain leading zeros.",
ErrorType::E112 => "Could not parse out of range JSON number.",
ErrorType::E113 => "Could not parse JSON number.",
ErrorType::E114 => {
"Illegal string after structural token. Expected comma or colon."
}
ErrorType::E116 => "Invalid escape character in JSON string.",
ErrorType::E117 => "Invalid character found in Unicode escape sequence.",
ErrorType::E118 => "Invalid Unicode grapheme in JSON string.",
ErrorType::E119 => "Invalid Unicode escape sequence in second surrogate pair.",
ErrorType::E122 => "Unexpected comma at the start of JSON document.",
ErrorType::E123 => "Unexpected comma after structural token.",
ErrorType::E124 => "Invalid use of comma after document root value.",
ErrorType::E125 => "Illegal begin-array after JSON value.",
ErrorType::E126 => "Illegal end-array. No begin-array match.",
ErrorType::E127 => "Unterminated array.",
ErrorType::E128 => "Unterminated object.",
ErrorType::E129 => "Illegal end-array after comma.",
ErrorType::E130 => "Illegal begin-object after JSON value.",
ErrorType::E131 => "Illegal end-object. No begin-object match.",
ErrorType::E132 => "Illegal end-object after comma.",
ErrorType::E133 => "Illegal end-array after colon.",
ErrorType::E134 => "Illegal end-object after colon.",
ErrorType::E135 => "Invalid object member. Member value does not exist.",
ErrorType::E136 => "Invalid use of colon.",
ErrorType::E137 => "Invalid use of number as object name.",
ErrorType::E138 => "Invalid use of true as object name.",
ErrorType::E139 => "Invalid use of false as object name.",
ErrorType::E140 => "Invalid use of null as object name.",
ErrorType::E141 => "Invalid object member.",
ErrorType::E142 => "Invalid use of array as object name.",
ErrorType::E143 => "Invalid use of object as object name.",
ErrorType::E144 => "Duplicate object name.",
}
}
/// Return the error code.
///
/// **Examples**
///
/// ```rust
/// assert_eq!(jsonprima::ErrorType::E104.code(), "E104");
/// ```
///
/// ```rust
/// // Invalid `true` root value in JSON document.
/// let text: &str = "trua";
/// let errors = jsonprima::validate(&text);
/// let code = errors.get(0).unwrap().err.code();
/// assert_eq!(code, "E105");
/// ```
pub fn code(&self) -> &str {
match self {
ErrorType::E100 => "E100",
ErrorType::E101 => "E101",
ErrorType::E103 => "E103",
ErrorType::E104 => "E104",
ErrorType::E105 => "E105",
ErrorType::E106 => "E106",
ErrorType::E107 => "E107",
ErrorType::E108 => "E108",
ErrorType::E109 => "E109",
ErrorType::E110 => "E110",
ErrorType::E111 => "E111",
ErrorType::E112 => "E112",
ErrorType::E113 => "E113",
ErrorType::E114 => "E114",
ErrorType::E116 => "E116",
ErrorType::E117 => "E117",
ErrorType::E118 => "E118",
ErrorType::E119 => "E119",
ErrorType::E122 => "E122",
ErrorType::E123 => "E123",
ErrorType::E124 => "E124",
ErrorType::E125 => "E125",
ErrorType::E126 => "E126",
ErrorType::E127 => "E127",
ErrorType::E128 => "E128",
ErrorType::E129 => "E129",
ErrorType::E130 => "E130",
ErrorType::E131 => "E131",
ErrorType::E132 => "E132",
ErrorType::E133 => "E133",
ErrorType::E134 => "E134",
ErrorType::E135 => "E135",
ErrorType::E136 => "E136",
ErrorType::E137 => "E137",
ErrorType::E138 => "E138",
ErrorType::E139 => "E139",
ErrorType::E140 => "E140",
ErrorType::E141 => "E141",
ErrorType::E142 => "E142",
ErrorType::E143 => "E143",
ErrorType::E144 => "E144",
}
}
}
/// Error type of validation functions.
#[derive(Debug)]
pub struct Error {
/// The ErrorType variant that describes the current error.
pub err: ErrorType,
/// The zero-based index before which the error ends.
/// The character at this index will not be included.
pub index_end: usize,
/// The zero-based index at which the error begins.
pub index_start: usize,
}
impl Error {
/// Construct a new error in the specified range.
pub fn new(err: ErrorType, index_start: usize, index_end: usize) -> Error {
Error {
err,
index_start,
index_end,
}
}
/// Serialize the error into a JSON value.
///
/// **Examples**
///
/// ```rust
/// // Invalid `true` root value in JSON document.
/// let text: &str = "trua";
/// let errors = jsonprima::validate(&text);
/// let serialized: String = errors.get(0).unwrap().serialize();
/// assert_eq!(serialized, "{\"code\": \"E105\", \"description\": \"Invalid character in literal name.\", \"index_end\": 4, \"index_start\": 0}");
/// ```
pub fn serialize(&self) -> String {
let mut serialized = "{\"code\": \"".to_string();
serialized.push_str(self.err.code());
serialized.push_str("\", \"description\": \"");
serialized.push_str(self.err.description());
serialized.push_str("\", \"index_end\": ");
serialized.push_str(&self.index_end.to_string());
serialized.push_str(", \"index_start\": ");
serialized.push_str(&self.index_start.to_string());
serialized.push_str("}");
serialized
}
}