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[meta] Use AsRef<str> to allow passing String or &str to Formatter functions;

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This commit is contained in:
Benjamin Bouvier
2019-02-08 18:28:58 +01:00
parent 90028a6d0d
commit c8e09cb37f
4 changed files with 86 additions and 94 deletions
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100
cranelift/codegen/meta/src/gen_settings.rs
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@@ -23,34 +23,31 @@ fn gen_constructor(group: &SettingGroup, parent: ParentGroup, fmt: &mut Formatte
};
fmt.line("impl Flags {");
fmt.indent(|fmt| {
fmt.doc_comment(&format!("Create flags {} settings group.", group.name));
fmt.doc_comment(format!("Create flags {} settings group.", group.name));
fmt.line("#[allow(unused_variables)]");
fmt.line(&format!("pub fn new({}) -> Self {{", args));
fmt.line(format!("pub fn new({}) -> Self {{", args));
fmt.indent(|fmt| {
fmt.line(&format!(
"let bvec = builder.state_for(\"{}\");",
group.name
));
fmt.line(&format!(
fmt.line(format!("let bvec = builder.state_for(\"{}\");", group.name));
fmt.line(format!(
"let mut {} = Self {{ bytes: [0; {}] }};",
group.name,
group.byte_size()
));
fmt.line(&format!(
fmt.line(format!(
"debug_assert_eq!(bvec.len(), {});",
group.settings_size
));
fmt.line(&format!(
fmt.line(format!(
"{}.bytes[0..{}].copy_from_slice(&bvec);",
group.name, group.settings_size
));
// Now compute the predicates.
for p in &group.predicates {
fmt.comment(&format!("Precompute #{}.", p.number));
fmt.line(&format!("if {} {{", p.render(group)));
fmt.comment(format!("Precompute #{}.", p.number));
fmt.line(format!("if {} {{", p.render(group)));
fmt.indent(|fmt| {
fmt.line(&format!(
fmt.line(format!(
"{}.bytes[{}] |= 1 << {};",
group.name,
group.bool_start_byte_offset + p.number / 8,
@@ -69,14 +66,14 @@ fn gen_constructor(group: &SettingGroup, parent: ParentGroup, fmt: &mut Formatte
/// Emit Display and FromStr implementations for enum settings.
fn gen_to_and_from_str(name: &str, values: &[&'static str], fmt: &mut Formatter) {
fmt.line(&format!("impl fmt::Display for {} {{", name));
fmt.line(format!("impl fmt::Display for {} {{", name));
fmt.indent(|fmt| {
fmt.line("fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {");
fmt.indent(|fmt| {
fmt.line("f.write_str(match *self {");
fmt.indent(|fmt| {
for v in values.iter() {
fmt.line(&format!("{}::{} => \"{}\",", name, camel_case(v), v));
fmt.line(format!("{}::{} => \"{}\",", name, camel_case(v), v));
}
});
fmt.line("})");
@@ -85,7 +82,7 @@ fn gen_to_and_from_str(name: &str, values: &[&'static str], fmt: &mut Formatter)
});
fmt.line("}");
fmt.line(&format!("impl str::FromStr for {} {{", name));
fmt.line(format!("impl str::FromStr for {} {{", name));
fmt.indent(|fmt| {
fmt.line("type Err = ();");
fmt.line("fn from_str(s: &str) -> Result<Self, Self::Err> {");
@@ -93,7 +90,7 @@ fn gen_to_and_from_str(name: &str, values: &[&'static str], fmt: &mut Formatter)
fmt.line("match s {");
fmt.indent(|fmt| {
for v in values.iter() {
fmt.line(&format!("\"{}\" => Ok({}::{}),", v, name, camel_case(v)));
fmt.line(format!("\"{}\" => Ok({}::{}),", v, name, camel_case(v)));
}
fmt.line("_ => Err(()),");
});
@@ -113,13 +110,13 @@ fn gen_enum_types(group: &SettingGroup, fmt: &mut Formatter) {
};
let name = camel_case(setting.name);
fmt.doc_comment(&format!("Values for `{}.{}`.", group.name, setting.name));
fmt.doc_comment(format!("Values for `{}.{}`.", group.name, setting.name));
fmt.line("#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]");
fmt.line(&format!("pub enum {} {{", name));
fmt.line(format!("pub enum {} {{", name));
fmt.indent(|fmt| {
for v in values.iter() {
fmt.doc_comment(&format!("`{}`.", v));
fmt.line(&format!("{},", camel_case(v)));
fmt.doc_comment(format!("`{}`.", v));
fmt.line(format!("{},", camel_case(v)));
}
});
fmt.line("}");
@@ -135,15 +132,15 @@ fn gen_getter(setting: &Setting, fmt: &mut Formatter) {
SpecificSetting::Bool(BoolSetting {
predicate_number, ..
}) => {
fmt.line(&format!("pub fn {}(&self) -> bool {{", setting.name));
fmt.line(format!("pub fn {}(&self) -> bool {{", setting.name));
fmt.indent(|fmt| {
fmt.line(&format!("self.numbered_predicate({})", predicate_number));
fmt.line(format!("self.numbered_predicate({})", predicate_number));
});
fmt.line("}");
}
SpecificSetting::Enum(ref values) => {
let ty = camel_case(setting.name);
fmt.line(&format!("pub fn {}(&self) -> {} {{", setting.name, ty));
fmt.line(format!("pub fn {}(&self) -> {} {{", setting.name, ty));
fmt.indent(|fmt| {
let mut m = Match::new(format!("self.bytes[{}]", setting.byte_offset));
for (i, v) in values.iter().enumerate() {
@@ -159,9 +156,9 @@ fn gen_getter(setting: &Setting, fmt: &mut Formatter) {
fmt.line("}");
}
SpecificSetting::Num(_) => {
fmt.line(&format!("pub fn {}(&self) -> u8 {{", setting.name));
fmt.line(format!("pub fn {}(&self) -> u8 {{", setting.name));
fmt.indent(|fmt| {
fmt.line(&format!("self.bytes[{}]", setting.byte_offset));
fmt.line(format!("self.bytes[{}]", setting.byte_offset));
});
fmt.line("}");
}
@@ -169,13 +166,10 @@ fn gen_getter(setting: &Setting, fmt: &mut Formatter) {
}
fn gen_pred_getter(predicate: &Predicate, group: &SettingGroup, fmt: &mut Formatter) {
fmt.doc_comment(&format!(
"Computed predicate `{}`.",
predicate.render(group)
));
fmt.line(&format!("pub fn {}(&self) -> bool {{", predicate.name));
fmt.doc_comment(format!("Computed predicate `{}`.", predicate.render(group)));
fmt.line(format!("pub fn {}(&self) -> bool {{", predicate.name));
fmt.indent(|fmt| {
fmt.line(&format!("self.numbered_predicate({})", predicate.number));
fmt.line(format!("self.numbered_predicate({})", predicate.number));
});
fmt.line("}");
}
@@ -189,7 +183,7 @@ fn gen_getters(group: &SettingGroup, fmt: &mut Formatter) {
fmt.doc_comment("Get a view of the boolean predicates.");
fmt.line("pub fn predicate_view(&self) -> ::settings::PredicateView {");
fmt.indent(|fmt| {
fmt.line(&format!(
fmt.line(format!(
"::settings::PredicateView::new(&self.bytes[{}..])",
group.bool_start_byte_offset
));
@@ -200,7 +194,7 @@ fn gen_getters(group: &SettingGroup, fmt: &mut Formatter) {
fmt.doc_comment("Dynamic numbered predicate getter.");
fmt.line("fn numbered_predicate(&self, p: usize) -> bool {");
fmt.indent(|fmt| {
fmt.line(&format!(
fmt.line(format!(
"self.bytes[{} + p / 8] & (1 << (p % 8)) != 0",
group.bool_start_byte_offset
));
@@ -240,7 +234,7 @@ fn gen_descriptors(group: &SettingGroup, fmt: &mut Formatter) {
let mut descriptor_index_map: HashMap<SettingOrPreset, usize> = HashMap::new();
// Generate descriptors.
fmt.line(&format!(
fmt.line(format!(
"static DESCRIPTORS: [detail::Descriptor; {}] = [",
group.settings.len() + group.presets.len()
));
@@ -248,18 +242,18 @@ fn gen_descriptors(group: &SettingGroup, fmt: &mut Formatter) {
for (idx, setting) in group.settings.iter().enumerate() {
fmt.line("detail::Descriptor {");
fmt.indent(|fmt| {
fmt.line(&format!("name: \"{}\",", setting.name));
fmt.line(&format!("offset: {},", setting.byte_offset));
fmt.line(format!("name: \"{}\",", setting.name));
fmt.line(format!("offset: {},", setting.byte_offset));
match setting.specific {
SpecificSetting::Bool(BoolSetting { bit_offset, .. }) => {
fmt.line(&format!(
fmt.line(format!(
"detail: detail::Detail::Bool {{ bit: {} }},",
bit_offset
));
}
SpecificSetting::Enum(ref values) => {
let offset = enum_table.add(values);
fmt.line(&format!(
fmt.line(format!(
"detail: detail::Detail::Enum {{ last: {}, enumerators: {} }},",
values.len() - 1,
offset
@@ -278,8 +272,8 @@ fn gen_descriptors(group: &SettingGroup, fmt: &mut Formatter) {
for (idx, preset) in group.presets.iter().enumerate() {
fmt.line("detail::Descriptor {");
fmt.indent(|fmt| {
fmt.line(&format!("name: \"{}\",", preset.name));
fmt.line(&format!("offset: {},", (idx as u8) * group.settings_size));
fmt.line(format!("name: \"{}\",", preset.name));
fmt.line(format!("offset: {},", (idx as u8) * group.settings_size));
fmt.line("detail: detail::Detail::Preset,");
});
fmt.line("},");
@@ -290,13 +284,13 @@ fn gen_descriptors(group: &SettingGroup, fmt: &mut Formatter) {
fmt.line("];");
// Generate enumerators.
fmt.line(&format!(
fmt.line(format!(
"static ENUMERATORS: [&str; {}] = [",
enum_table.len()
));
fmt.indent(|fmt| {
for enum_val in enum_table.iter() {
fmt.line(&format!("\"{}\",", enum_val));
fmt.line(format!("\"{}\",", enum_val));
}
});
fmt.line("];");
@@ -318,14 +312,14 @@ fn gen_descriptors(group: &SettingGroup, fmt: &mut Formatter) {
.collect::<Vec<SettingOrPreset>>(),
);
let hash_table = generate_table(&hash_entries, |entry| simple_hash(entry.name()));
fmt.line(&format!(
fmt.line(format!(
"static HASH_TABLE: [u16; {}] = [",
hash_table.len()
));
fmt.indent(|fmt| {
for h in &hash_table {
match *h {
Some(setting_or_preset) => fmt.line(&format!(
Some(setting_or_preset) => fmt.line(format!(
"{},",
&descriptor_index_map
.get(setting_or_preset)
@@ -339,7 +333,7 @@ fn gen_descriptors(group: &SettingGroup, fmt: &mut Formatter) {
fmt.line("];");
// Generate presets.
fmt.line(&format!(
fmt.line(format!(
"static PRESETS: [(u8, u8); {}] = [",
group.presets.len()
));
@@ -347,7 +341,7 @@ fn gen_descriptors(group: &SettingGroup, fmt: &mut Formatter) {
for preset in &group.presets {
fmt.comment(preset.name);
for (mask, value) in preset.layout(&group) {
fmt.line(&format!("(0b{:08b}, 0b{:08b}),", mask, value));
fmt.line(format!("(0b{:08b}, 0b{:08b}),", mask, value));
}
}
});
@@ -368,16 +362,16 @@ fn gen_template(group: &SettingGroup, fmt: &mut Formatter) {
fmt.line("static TEMPLATE: detail::Template = detail::Template {");
fmt.indent(|fmt| {
fmt.line(&format!("name: \"{}\",", group.name));
fmt.line(format!("name: \"{}\",", group.name));
fmt.line("descriptors: &DESCRIPTORS,");
fmt.line("enumerators: &ENUMERATORS,");
fmt.line("hash_table: &HASH_TABLE,");
fmt.line(&format!("defaults: &[{}],", default_bytes_str));
fmt.line(format!("defaults: &[{}],", default_bytes_str));
fmt.line("presets: &PRESETS,");
});
fmt.line("};");
fmt.doc_comment(&format!(
fmt.doc_comment(format!(
"Create a `settings::Builder` for the {} settings group.",
group.name
));
@@ -393,7 +387,7 @@ fn gen_display(group: &SettingGroup, fmt: &mut Formatter) {
fmt.indent(|fmt| {
fmt.line("fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {");
fmt.indent(|fmt| {
fmt.line(&format!("writeln!(f, \"[{}]\")?;", group.name));
fmt.line(format!("writeln!(f, \"[{}]\")?;", group.name));
fmt.line("for d in &DESCRIPTORS {");
fmt.indent(|fmt| {
fmt.line("if !d.detail.is_preset() {");
@@ -417,10 +411,10 @@ fn gen_display(group: &SettingGroup, fmt: &mut Formatter) {
fn gen_group(group: &SettingGroup, parent: ParentGroup, fmt: &mut Formatter) {
// Generate struct.
fmt.line("#[derive(Clone)]");
fmt.doc_comment(&format!("Flags group `{}`.", group.name));
fmt.doc_comment(format!("Flags group `{}`.", group.name));
fmt.line("pub struct Flags {");
fmt.indent(|fmt| {
fmt.line(&format!("bytes: [u8; {}],", group.byte_size()));
fmt.line(format!("bytes: [u8; {}],", group.byte_size()));
});
fmt.line("}");
@@ -443,6 +437,6 @@ pub fn generate_common(filename: &str, out_dir: &str) -> Result<SettingGroup, er
pub fn generate(isa: &TargetIsa, prefix: &str, out_dir: &str) -> Result<(), error::Error> {
let mut fmt = Formatter::new();
gen_group(&isa.settings, ParentGroup::Shared, &mut fmt);
fmt.update_file(&format!("{}-{}.rs", prefix, isa.name), out_dir)?;
fmt.update_file(format!("{}-{}.rs", prefix, isa.name), out_dir)?;
Ok(())
}