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Factor convenience functions out of main printer implementation
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use crate::pp::{BeginToken, BreakToken, Breaks, IndentStyle, Printer, Token, SIZE_INFINITY}; | ||
use std::borrow::Cow; | ||
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impl Printer { | ||
/// "raw box" | ||
pub fn rbox(&mut self, indent: usize, breaks: Breaks) { | ||
self.scan_begin(BeginToken { | ||
indent: IndentStyle::Block { offset: indent as isize }, | ||
breaks, | ||
}) | ||
} | ||
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/// Inconsistent breaking box | ||
pub fn ibox(&mut self, indent: usize) { | ||
self.rbox(indent, Breaks::Inconsistent) | ||
} | ||
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/// Consistent breaking box | ||
pub fn cbox(&mut self, indent: usize) { | ||
self.rbox(indent, Breaks::Consistent) | ||
} | ||
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pub fn visual_align(&mut self) { | ||
self.scan_begin(BeginToken { indent: IndentStyle::Visual, breaks: Breaks::Consistent }); | ||
} | ||
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pub fn break_offset(&mut self, n: usize, off: isize) { | ||
self.scan_break(BreakToken { offset: off, blank_space: n as isize }) | ||
} | ||
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pub fn end(&mut self) { | ||
self.scan_end() | ||
} | ||
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pub fn eof(mut self) -> String { | ||
self.scan_eof(); | ||
self.out | ||
} | ||
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pub fn word<S: Into<Cow<'static, str>>>(&mut self, wrd: S) { | ||
let string = wrd.into(); | ||
self.scan_string(string) | ||
} | ||
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fn spaces(&mut self, n: usize) { | ||
self.break_offset(n, 0) | ||
} | ||
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pub fn zerobreak(&mut self) { | ||
self.spaces(0) | ||
} | ||
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pub fn space(&mut self) { | ||
self.spaces(1) | ||
} | ||
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pub fn hardbreak(&mut self) { | ||
self.spaces(SIZE_INFINITY as usize) | ||
} | ||
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pub fn is_beginning_of_line(&self) -> bool { | ||
match self.last_token() { | ||
Some(last_token) => last_token.is_hardbreak_tok(), | ||
None => true, | ||
} | ||
} | ||
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pub fn hardbreak_tok_offset(off: isize) -> Token { | ||
Token::Break(BreakToken { offset: off, blank_space: SIZE_INFINITY }) | ||
} | ||
} | ||
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impl Token { | ||
pub fn is_hardbreak_tok(&self) -> bool { | ||
matches!(self, Token::Break(BreakToken { offset: 0, blank_space: SIZE_INFINITY })) | ||
} | ||
} |