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use std::io::Write;
use std::fs::File;
use std::path;
use std::fs;
use bindgen::config::{Config, Language};
use bindgen::ir::{Constant, Function, ItemContainer, Static};
use bindgen::writer::{Source, SourceWriter};
pub struct Bindings {
config: Config,
globals: Vec<Static>,
constants: Vec<Constant>,
items: Vec<ItemContainer>,
functions: Vec<Function>,
}
impl Bindings {
pub(crate) fn new(
config: Config,
constants: Vec<Constant>,
globals: Vec<Static>,
items: Vec<ItemContainer>,
functions: Vec<Function>,
) -> Bindings {
Bindings {
config: config,
globals: globals,
constants: constants,
items: items,
functions: functions,
}
}
pub fn write_to_file<P: AsRef<path::Path>>(&self, path: P) {
if let Some(parent) = path::Path::new(path.as_ref()).parent() {
fs::create_dir_all(parent).unwrap();
}
self.write(File::create(path).unwrap());
}
pub fn write<F: Write>(&self, file: F) {
let mut out = SourceWriter::new(file, &self.config);
if let Some(ref f) = self.config.header {
out.new_line_if_not_start();
write!(out, "{}", f);
out.new_line();
}
if let Some(ref f) = self.config.include_guard {
out.new_line_if_not_start();
write!(out, "#ifndef {}", f);
out.new_line();
write!(out, "#define {}", f);
out.new_line();
}
if self.config.include_version {
out.new_line_if_not_start();
write!(
out,
"/* Generated with cbindgen:{} */",
::bindgen::config::VERSION
);
out.new_line();
}
if let Some(ref f) = self.config.autogen_warning {
out.new_line_if_not_start();
write!(out, "{}", f);
out.new_line();
}
out.new_line_if_not_start();
if self.config.language == Language::C {
out.write("#include <stdint.h>");
out.new_line();
out.write("#include <stdlib.h>");
out.new_line();
out.write("#include <stdbool.h>");
} else {
out.write("#include <cstdint>");
out.new_line();
out.write("#include <cstdlib>");
}
out.new_line();
if self.config.language == Language::Cxx {
self.open_namespaces(&mut out);
}
for constant in &self.constants {
out.new_line_if_not_start();
constant.write(&self.config, &mut out);
out.new_line();
}
for item in &self.items {
if item.deref()
.annotations()
.bool("no-export")
.unwrap_or(false)
{
continue;
}
out.new_line_if_not_start();
match item {
&ItemContainer::Constant(..) => unreachable!(),
&ItemContainer::Static(..) => unreachable!(),
&ItemContainer::Enum(ref x) => x.write(&self.config, &mut out),
&ItemContainer::Struct(ref x) => x.write(&self.config, &mut out),
&ItemContainer::Union(ref x) => x.write(&self.config, &mut out),
&ItemContainer::OpaqueItem(ref x) => x.write(&self.config, &mut out),
&ItemContainer::Typedef(ref x) => x.write(&self.config, &mut out),
}
out.new_line();
}
if self.config.language == Language::Cxx {
out.new_line_if_not_start();
out.write("extern \"C\" {");
out.new_line();
}
for global in &self.globals {
out.new_line_if_not_start();
global.write(&self.config, &mut out);
out.new_line();
}
if let Some(ref f) = self.config.autogen_warning {
out.new_line_if_not_start();
write!(out, "{}", f);
out.new_line();
}
for function in &self.functions {
out.new_line_if_not_start();
function.write(&self.config, &mut out);
out.new_line();
}
if self.config.language == Language::Cxx {
out.new_line_if_not_start();
out.write("} // extern \"C\"");
out.new_line();
self.close_namespaces(&mut out);
}
if let Some(ref f) = self.config.autogen_warning {
out.new_line_if_not_start();
write!(out, "{}", f);
out.new_line();
}
if let Some(ref f) = self.config.include_guard {
out.new_line_if_not_start();
if self.config.language == Language::C {
write!(out, "#endif /* {} */", f);
} else {
write!(out, "#endif // {}", f);
}
out.new_line();
}
if let Some(ref f) = self.config.trailer {
out.new_line_if_not_start();
write!(out, "{}", f);
out.new_line();
}
}
pub(crate) fn open_namespaces<F: Write>(&self, out: &mut SourceWriter<F>) {
let mut wrote_namespace: bool = false;
if let Some(ref namespace) = self.config.namespace {
wrote_namespace = true;
out.new_line();
write!(out, "namespace {} {{", namespace);
}
if let Some(ref namespaces) = self.config.namespaces {
wrote_namespace = true;
for namespace in namespaces {
out.new_line();
write!(out, "namespace {} {{", namespace);
}
}
if wrote_namespace {
out.new_line();
}
}
pub(crate) fn close_namespaces<F: Write>(&self, out: &mut SourceWriter<F>) {
let mut wrote_namespace: bool = false;
if let Some(ref namespaces) = self.config.namespaces {
wrote_namespace = true;
for namespace in namespaces.iter().rev() {
out.new_line_if_not_start();
write!(out, "}} // namespace {}", namespace);
}
}
if let Some(ref namespace) = self.config.namespace {
wrote_namespace = true;
out.new_line_if_not_start();
write!(out, "}} // namespace {}", namespace);
}
if wrote_namespace {
out.new_line();
}
}
}