From e5d9aee00b0c775df1d8e2d8819aeb80dffa73c2 Mon Sep 17 00:00:00 2001
From: Nadrieril
Date: Fri, 1 Mar 2019 17:28:19 +0100
Subject: Split abnf_to_pest and dhall into their own crates

---
 build.rs | 148 ---------------------------------------------------------------
 1 file changed, 148 deletions(-)
 delete mode 100644 build.rs

(limited to 'build.rs')

diff --git a/build.rs b/build.rs
deleted file mode 100644
index a418c67..0000000
--- a/build.rs
+++ /dev/null
@@ -1,148 +0,0 @@
-use std::fs::File;
-use std::io::{Read,Write,BufReader,BufRead};
-use std::collections::HashMap;
-use itertools::Itertools;
-
-use lalrpop;
-
-struct PestRuleSettings {
-    visible: bool,
-    replace: Option<String>,
-}
-
-impl Default for PestRuleSettings {
-    fn default() -> Self { PestRuleSettings { visible: true, replace: None } }
-}
-
-fn abnf_to_pest(data: &Vec<u8>, rule_settings: &HashMap<String, PestRuleSettings>) -> std::io::Result<String> {
-    use abnf::abnf::*;
-    use pretty::{Doc, BoxDoc};
-    fn format_rule(x: Rule, rule_settings: &HashMap<String, PestRuleSettings>) -> Doc<BoxDoc<()>> {
-        let rulename = format_rulename(x.name);
-        let default = Default::default();
-        let setting = rule_settings.get(&rulename).unwrap_or(&default);
-        let visible = if setting.visible { "" } else { "_" };
-        let contents = match setting.replace {
-            None => format_alternation(x.elements),
-            Some(ref x) => Doc::text(x.clone()),
-        };
-        Doc::nil()
-            .append(Doc::text(rulename))
-            .append(Doc::text(" = "))
-            .append(Doc::text(visible))
-            .append(Doc::text("{"))
-            .append(Doc::space().append(contents).nest(2))
-            .append(Doc::space())
-            .append(Doc::text("}"))
-            .group()
-    }
-    fn format_rulename(x: String) -> String {
-        let x = x.replace("-", "_");
-        if x == "if" || x == "else" || x == "as" || x == "let" || x == "in" || x == "fn" {
-            x + "_"
-        } else {
-            x
-        }
-    }
-    fn format_alternation(x: Alternation) -> Doc<'static, BoxDoc<'static, ()>> {
-        Doc::intersperse(
-            x.concatenations.into_iter().map(format_concatenation),
-            Doc::space().append(Doc::text("| "))
-        )
-    }
-    fn format_concatenation(x: Concatenation) -> Doc<'static, BoxDoc<'static, ()>> {
-        Doc::intersperse(
-            x.repetitions.into_iter().map(format_repetition),
-            Doc::text(" ~ ")
-        )
-    }
-    fn format_repetition(x: Repetition) -> Doc<'static, BoxDoc<'static, ()>> {
-        format_element(x.element)
-            .append(x.repeat.map(format_repeat).map(Doc::text).unwrap_or(Doc::nil()))
-    }
-    fn format_repeat(x: Repeat) -> String {
-        match (x.min.unwrap_or(0), x.max) {
-            (0, None) => "*".into(),
-            (1, None) => "+".into(),
-            (0, Some(1)) => "?".into(),
-            (min, None) => format!("{{{},}}", min),
-            (min, Some(max)) if min == max => format!("{{{}}}", min),
-            (min, Some(max)) => format!("{{{},{}}}", min, max),
-        }
-    }
-    fn format_element(x: Element) -> Doc<'static, BoxDoc<'static, ()>> {
-        use abnf::abnf::Element::*;
-        match x {
-            Rulename(s) => Doc::text(format_rulename(s)),
-            Group(g) =>
-                Doc::text("(")
-                    .append(format_alternation(g.alternation).nest(4).group())
-                    .append(Doc::text(")")),
-            Option(o) =>
-                Doc::text("(")
-                    .append(format_alternation(o.alternation).nest(4).group())
-                    .append(Doc::text(")?")),
-            CharVal(s) => Doc::text(format!("^\"{}\"", s.replace("\"", "\\\"").replace("\\", "\\\\"))),
-            NumVal(r) => Doc::text(format_range(r)),
-            ProseVal(_) => unimplemented!(),
-        }
-    }
-    fn format_range(x: Range) -> String {
-        use abnf::abnf::Range::*;
-        match x {
-            Range(x, y) => format!("'{}'..'{}'", format_char(x), format_char(y)),
-            OneOf(v) => format!("\"{}\"", v.into_iter().map(format_char).join("")),
-        }
-    }
-    fn format_char(x: u64) -> String {
-        if x <= (u8::max_value() as u64) {
-            let x: u8 = x as u8;
-            if x.is_ascii_graphic() {
-                let x: char = x as char;
-                if x != '"' && x != '\'' && x != '\\' {
-                    return x.to_string();
-                }
-            }
-        }
-        format!("\\u{{{:02X}}}", x)
-    }
-    let make_err = |e| std::io::Error::new(std::io::ErrorKind::Other, format!("{}", e));
-
-    let rules = rulelist_comp(&data).map_err(make_err)?.1;
-    let formatted_rules = rules.into_iter().map(|x| format_rule(x, rule_settings));
-    let doc: Doc<_> = Doc::intersperse(formatted_rules, Doc::newline());
-    Ok(format!("{}", doc.pretty(80)))
-}
-
-fn main() -> std::io::Result<()> {
-    lalrpop::process_root().unwrap();
-    println!("cargo:rerun-if-changed=src/grammar.lalrpop");
-
-
-    let abnf_path = "dhall-lang/standard/dhall.abnf";
-    let visibility_path = "src/dhall.pest.visibility";
-    let pest_path = "src/dhall.pest";
-    println!("cargo:rerun-if-changed={}", abnf_path);
-    println!("cargo:rerun-if-changed={}", visibility_path);
-
-    let mut file = File::open(abnf_path)?;
-    let mut data = Vec::new();
-    file.read_to_end(&mut data)?;
-    data.push('\n' as u8);
-
-    let mut rule_settings: HashMap<String, PestRuleSettings> = HashMap::new();
-    for line in BufReader::new(File::open(visibility_path)?).lines() {
-        let line = line?;
-        if line.len() >= 2 && &line[0..2] == "# " {
-            rule_settings.insert(line[2..].into(), PestRuleSettings { visible: false, ..Default::default() });
-        } else {
-            rule_settings.insert(line, PestRuleSettings { visible: true, ..Default::default() });
-        }
-    }
-
-    let mut file = File::create(pest_path)?;
-    writeln!(&mut file, "{}", abnf_to_pest(&data, &rule_settings)?)?;
-    writeln!(&mut file, "final_expression = _{{ SOI ~ complete_expression ~ EOI }}")?;
-
-    Ok(())
-}
-- 
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