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use common::{
is_name_start_char, is_name_char,
};
use reader::events::XmlEvent;
use reader::lexer::Token;
use super::{Result, PullParser, State, ProcessingInstructionSubstate, DeclarationSubstate};
impl PullParser {
pub fn inside_processing_instruction(&mut self, t: Token, s: ProcessingInstructionSubstate) -> Option<Result> {
match s {
ProcessingInstructionSubstate::PIInsideName => match t {
Token::Character(c) if !self.buf_has_data() && is_name_start_char(c) ||
self.buf_has_data() && is_name_char(c) => self.append_char_continue(c),
Token::ProcessingInstructionEnd => {
// self.buf contains PI name
let name = self.take_buf();
// Don't need to check for declaration because it has mandatory attributes
// but there is none
match &name[..] {
// Name is empty, it is an error
"" => Some(self_error!(self; "Encountered processing instruction without name")),
// Found <?xml-like PI not at the beginning of a document,
// it is an error - see section 2.6 of XML 1.1 spec
"xml"|"xmL"|"xMl"|"xML"|"Xml"|"XmL"|"XMl"|"XML" =>
Some(self_error!(self; "Invalid processing instruction: <?{}", name)),
// All is ok, emitting event
_ => {
self.into_state_emit(
State::OutsideTag,
Ok(XmlEvent::ProcessingInstruction {
name: name,
data: None
})
)
}
}
}
Token::Whitespace(_) => {
// self.buf contains PI name
let name = self.take_buf();
match &name[..] {
// We have not ever encountered an element and have not parsed XML declaration
"xml" if !self.encountered_element && !self.parsed_declaration =>
self.into_state_continue(State::InsideDeclaration(DeclarationSubstate::BeforeVersion)),
// Found <?xml-like PI after the beginning of a document,
// it is an error - see section 2.6 of XML 1.1 spec
"xml"|"xmL"|"xMl"|"xML"|"Xml"|"XmL"|"XMl"|"XML"
if self.encountered_element || self.parsed_declaration =>
Some(self_error!(self; "Invalid processing instruction: <?{}", name)),
// All is ok, starting parsing PI data
_ => {
self.lexer.disable_errors(); // data is arbitrary, so disable errors
self.data.name = name;
self.into_state_continue(State::InsideProcessingInstruction(ProcessingInstructionSubstate::PIInsideData))
}
}
}
_ => Some(self_error!(self; "Unexpected token: <?{}{}", self.buf, t))
},
ProcessingInstructionSubstate::PIInsideData => match t {
Token::ProcessingInstructionEnd => {
self.lexer.enable_errors();
let name = self.data.take_name();
let data = self.take_buf();
self.into_state_emit(
State::OutsideTag,
Ok(XmlEvent::ProcessingInstruction {
name: name,
data: Some(data)
})
)
},
// Any other token should be treated as plain characters
_ => {
t.push_to_string(&mut self.buf);
None
}
},
}
}
}