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Diffstat (limited to '')
| -rw-r--r-- | third_party/rust/xml-rs/src/common.rs | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/third_party/rust/xml-rs/src/common.rs b/third_party/rust/xml-rs/src/common.rs new file mode 100644 index 0000000000..029e8515af --- /dev/null +++ b/third_party/rust/xml-rs/src/common.rs @@ -0,0 +1,142 @@ +//! Contains common types and functions used throughout the library. + +use std::fmt; + +/// Represents a position inside some textual document. +#[derive(Copy, Clone, PartialEq, Eq)] +pub struct TextPosition { + /// Row, counting from 0 + pub row: u64, + /// Column, counting from 0 + pub column: u64, +} + +impl TextPosition { + /// Creates a new position initialized to the beginning of the document + #[inline] + pub fn new() -> TextPosition { + TextPosition { row: 0, column: 0 } + } + + /// Advances the position in a line + #[inline] + pub fn advance(&mut self, count: u8) { + self.column += count as u64; + } + + /// Advances the position in a line to the next tab position + #[inline] + pub fn advance_to_tab(&mut self, width: u8) { + let width = width as u64; + self.column += width - self.column % width + } + + /// Advances the position to the beginning of the next line + #[inline] + pub fn new_line(&mut self) { + self.column = 0; + self.row += 1; + } +} + +impl fmt::Debug for TextPosition { + #[inline] + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "{}:{}", self.row + 1, self.column + 1) + } +} + +impl fmt::Display for TextPosition { + #[inline] + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "{}:{}", self.row + 1, self.column + 1) + } +} + +/// Get the position in the document corresponding to the object +/// +/// This trait is implemented by parsers, lexers and errors. +pub trait Position { + /// Returns the current position or a position corresponding to the object. + fn position(&self) -> TextPosition; +} + +impl Position for TextPosition { + #[inline] + fn position(&self) -> TextPosition { + *self + } +} + +/// XML version enumeration. +#[derive(Copy, Clone, PartialEq, Eq)] +pub enum XmlVersion { + /// XML version 1.0. + Version10, + + /// XML version 1.1. + Version11 +} + +impl fmt::Display for XmlVersion { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { + XmlVersion::Version10 => write!(f, "1.0"), + XmlVersion::Version11 => write!(f, "1.1") + } + } +} + +impl fmt::Debug for XmlVersion { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + fmt::Display::fmt(self, f) + } +} + +/// Checks whether the given character is a white space character (`S`) +/// as is defined by XML 1.1 specification, [section 2.3][1]. +/// +/// [1]: http://www.w3.org/TR/2006/REC-xml11-20060816/#sec-common-syn +pub fn is_whitespace_char(c: char) -> bool { + match c { + '\x20' | '\x09' | '\x0d' | '\x0a' => true, + _ => false + } +} + +/// Checks whether the given string is compound only by white space +/// characters (`S`) using the previous is_whitespace_char to check +/// all characters of this string +pub fn is_whitespace_str(s: &str) -> bool { + s.chars().all(is_whitespace_char) +} + +/// Checks whether the given character is a name start character (`NameStartChar`) +/// as is defined by XML 1.1 specification, [section 2.3][1]. +/// +/// [1]: http://www.w3.org/TR/2006/REC-xml11-20060816/#sec-common-syn +pub fn is_name_start_char(c: char) -> bool { + match c { + ':' | 'A'...'Z' | '_' | 'a'...'z' | + '\u{C0}'...'\u{D6}' | '\u{D8}'...'\u{F6}' | '\u{F8}'...'\u{2FF}' | + '\u{370}'...'\u{37D}' | '\u{37F}'...'\u{1FFF}' | + '\u{200C}'...'\u{200D}' | '\u{2070}'...'\u{218F}' | + '\u{2C00}'...'\u{2FEF}' | '\u{3001}'...'\u{D7FF}' | + '\u{F900}'...'\u{FDCF}' | '\u{FDF0}'...'\u{FFFD}' | + '\u{10000}'...'\u{EFFFF}' => true, + _ => false + } +} + +/// Checks whether the given character is a name character (`NameChar`) +/// as is defined by XML 1.1 specification, [section 2.3][1]. +/// +/// [1]: http://www.w3.org/TR/2006/REC-xml11-20060816/#sec-common-syn +pub fn is_name_char(c: char) -> bool { + match c { + _ if is_name_start_char(c) => true, + '-' | '.' | '0'...'9' | '\u{B7}' | + '\u{300}'...'\u{36F}' | '\u{203F}'...'\u{2040}' => true, + _ => false + } +} |