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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use std::collections::{BTreeMap, HashMap};
+use std::default::Default;
+use std::str::FromStr;
+use std::{fmt, fs, path::Path as StdPath, path::PathBuf as StdPathBuf};
+
+use serde::de::value::{MapAccessDeserializer, SeqAccessDeserializer};
+use serde::de::{Deserialize, Deserializer, MapAccess, SeqAccess, Visitor};
+
+use crate::bindgen::ir::annotation::AnnotationSet;
+use crate::bindgen::ir::path::Path;
+use crate::bindgen::ir::repr::ReprAlign;
+pub use crate::bindgen::rename::RenameRule;
+
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");
+
+/// A language type to generate bindings for.
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+pub enum Language {
+ Cxx,
+ C,
+ Cython,
+}
+
+impl FromStr for Language {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<Language, Self::Err> {
+ match s {
+ "cxx" => Ok(Language::Cxx),
+ "Cxx" => Ok(Language::Cxx),
+ "CXX" => Ok(Language::Cxx),
+ "cpp" => Ok(Language::Cxx),
+ "Cpp" => Ok(Language::Cxx),
+ "CPP" => Ok(Language::Cxx),
+ "c++" => Ok(Language::Cxx),
+ "C++" => Ok(Language::Cxx),
+ "c" => Ok(Language::C),
+ "C" => Ok(Language::C),
+ "cython" => Ok(Language::Cython),
+ "Cython" => Ok(Language::Cython),
+ _ => Err(format!("Unrecognized Language: '{}'.", s)),
+ }
+ }
+}
+
+deserialize_enum_str!(Language);
+
+impl Language {
+ pub(crate) fn typedef(self) -> &'static str {
+ match self {
+ Language::Cxx | Language::C => "typedef",
+ Language::Cython => "ctypedef",
+ }
+ }
+}
+
+/// Controls what type of line endings are used in the generated code.
+#[derive(Debug, Clone, Copy)]
+#[allow(clippy::upper_case_acronyms)]
+#[derive(Default)]
+pub enum LineEndingStyle {
+ /// Use Unix-style linefeed characters
+ #[default]
+ LF,
+ /// Use classic Mac-style carriage-return characters
+ CR,
+ /// Use Windows-style carriage-return and linefeed characters
+ CRLF,
+ /// Use the native mode for the platform: CRLF on Windows, LF everywhere else.
+ Native,
+}
+
+impl LineEndingStyle {
+ pub fn as_str(&self) -> &'static str {
+ match self {
+ Self::LF => "\n",
+ Self::CR => "\r",
+ Self::CRLF => "\r\n",
+ Self::Native => {
+ #[cfg(target_os = "windows")]
+ {
+ Self::CRLF.as_str()
+ }
+ #[cfg(not(target_os = "windows"))]
+ {
+ Self::LF.as_str()
+ }
+ }
+ }
+ }
+}
+
+impl FromStr for LineEndingStyle {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<Self, Self::Err> {
+ match s.to_lowercase().as_ref() {
+ "native" => Ok(Self::Native),
+ "lf" => Ok(Self::LF),
+ "crlf" => Ok(Self::CRLF),
+ "cr" => Ok(Self::CR),
+ _ => Err(format!("Unrecognized line ending style: '{}'.", s)),
+ }
+ }
+}
+
+deserialize_enum_str!(LineEndingStyle);
+
+/// A style of braces to use for generating code.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum Braces {
+ SameLine,
+ NextLine,
+}
+
+impl FromStr for Braces {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<Braces, Self::Err> {
+ match s {
+ "SameLine" => Ok(Braces::SameLine),
+ "same_line" => Ok(Braces::SameLine),
+ "NextLine" => Ok(Braces::NextLine),
+ "next_line" => Ok(Braces::NextLine),
+ _ => Err(format!("Unrecognized Braces: '{}'.", s)),
+ }
+ }
+}
+
+deserialize_enum_str!(Braces);
+
+/// A type of layout to use when generating long lines of code.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum Layout {
+ Horizontal,
+ Vertical,
+ Auto,
+}
+
+impl FromStr for Layout {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<Layout, Self::Err> {
+ match s {
+ "Horizontal" => Ok(Layout::Horizontal),
+ "horizontal" => Ok(Layout::Horizontal),
+ "Vertical" => Ok(Layout::Vertical),
+ "vertical" => Ok(Layout::Vertical),
+ "Auto" => Ok(Layout::Auto),
+ "auto" => Ok(Layout::Auto),
+ _ => Err(format!("Unrecognized Layout: '{}'.", s)),
+ }
+ }
+}
+
+deserialize_enum_str!(Layout);
+
+/// How the comments containing documentation should be styled.
+#[derive(Debug, Clone, PartialEq, Eq, Copy)]
+pub enum DocumentationStyle {
+ C,
+ C99,
+ Doxy,
+ Cxx,
+ Auto,
+}
+
+impl FromStr for DocumentationStyle {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<DocumentationStyle, Self::Err> {
+ match s.to_lowercase().as_ref() {
+ "c" => Ok(DocumentationStyle::C),
+ "c99" => Ok(DocumentationStyle::C99),
+ "cxx" => Ok(DocumentationStyle::Cxx),
+ "c++" => Ok(DocumentationStyle::Cxx),
+ "doxy" => Ok(DocumentationStyle::Doxy),
+ "auto" => Ok(DocumentationStyle::Auto),
+ _ => Err(format!("Unrecognized documentation style: '{}'.", s)),
+ }
+ }
+}
+
+deserialize_enum_str!(DocumentationStyle);
+
+/// How much of the documentation to include in the header file.
+#[derive(Debug, Clone, Copy)]
+pub enum DocumentationLength {
+ Short,
+ Full,
+}
+
+impl FromStr for DocumentationLength {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<DocumentationLength, Self::Err> {
+ match s.to_lowercase().as_ref() {
+ "short" => Ok(DocumentationLength::Short),
+ "full" => Ok(DocumentationLength::Full),
+ _ => Err(format!("Unrecognized documentation style: '{}'.", s)),
+ }
+ }
+}
+
+deserialize_enum_str!(DocumentationLength);
+
+/// A style of Style to use when generating structs and enums.
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Default)]
+pub enum Style {
+ #[default]
+ Both,
+ Tag,
+ Type,
+}
+
+impl Style {
+ pub fn generate_tag(self) -> bool {
+ match self {
+ Style::Both | Style::Tag => true,
+ Style::Type => false,
+ }
+ }
+
+ pub fn generate_typedef(self) -> bool {
+ match self {
+ Style::Both | Style::Type => true,
+ Style::Tag => false,
+ }
+ }
+
+ // https://cython.readthedocs.io/en/latest/src/userguide/external_C_code.html#styles-of-struct-union-and-enum-declaration
+ pub fn cython_def(self) -> &'static str {
+ if self.generate_tag() {
+ "cdef "
+ } else {
+ "ctypedef "
+ }
+ }
+}
+
+impl FromStr for Style {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<Style, Self::Err> {
+ match s {
+ "Both" => Ok(Style::Both),
+ "both" => Ok(Style::Both),
+ "Tag" => Ok(Style::Tag),
+ "tag" => Ok(Style::Tag),
+ "Type" => Ok(Style::Type),
+ "type" => Ok(Style::Type),
+ _ => Err(format!("Unrecognized Style: '{}'.", s)),
+ }
+ }
+}
+
+deserialize_enum_str!(Style);
+
+/// Different item types that we can generate and filter.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum ItemType {
+ Constants,
+ Globals,
+ Enums,
+ Structs,
+ Unions,
+ Typedefs,
+ OpaqueItems,
+ Functions,
+}
+
+impl FromStr for ItemType {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<Self, Self::Err> {
+ use self::ItemType::*;
+ Ok(match &*s.to_lowercase() {
+ "constants" => Constants,
+ "globals" => Globals,
+ "enums" => Enums,
+ "structs" => Structs,
+ "unions" => Unions,
+ "typedefs" => Typedefs,
+ "opaque" => OpaqueItems,
+ "functions" => Functions,
+ _ => return Err(format!("Unrecognized Style: '{}'.", s)),
+ })
+ }
+}
+
+deserialize_enum_str!(ItemType);
+
+/// Type which specifies the sort order of functions
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum SortKey {
+ Name,
+ None,
+}
+
+impl FromStr for SortKey {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<Self, Self::Err> {
+ use self::SortKey::*;
+ Ok(match &*s.to_lowercase() {
+ "name" => Name,
+ "none" => None,
+ _ => return Err(format!("Unrecognized sort option: '{}'.", s)),
+ })
+ }
+}
+
+deserialize_enum_str!(SortKey);
+
+/// Settings to apply when exporting items.
+#[derive(Debug, Clone, Deserialize, Default)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct ExportConfig {
+ /// A list of additional items not used by exported functions to include in
+ /// the generated bindings
+ pub include: Vec<String>,
+ /// A list of items to not include in the generated bindings
+ pub exclude: Vec<String>,
+ /// Table of name conversions to apply to item names
+ pub rename: HashMap<String, String>,
+ /// Table of raw strings to prepend to the body of items.
+ pub pre_body: HashMap<String, String>,
+ /// Table of raw strings to append to the body of items.
+ pub body: HashMap<String, String>,
+ /// A prefix to add before the name of every item
+ pub prefix: Option<String>,
+ /// Types of items to generate.
+ pub item_types: Vec<ItemType>,
+ /// Whether renaming overrides or extends prefixing.
+ pub renaming_overrides_prefixing: bool,
+ /// Mangling configuration.
+ pub mangle: MangleConfig,
+}
+
+/// Mangling-specific configuration.
+#[derive(Debug, Clone, Deserialize, Default)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct MangleConfig {
+ /// The rename rule to apply to the type names mangled.
+ pub rename_types: RenameRule,
+ /// Remove the underscores used for name mangling.
+ pub remove_underscores: bool,
+}
+
+impl ExportConfig {
+ pub(crate) fn should_generate(&self, item_type: ItemType) -> bool {
+ self.item_types.is_empty() || self.item_types.contains(&item_type)
+ }
+
+ pub(crate) fn pre_body(&self, path: &Path) -> Option<&str> {
+ self.pre_body.get(path.name()).map(|s| s.trim_matches('\n'))
+ }
+
+ pub(crate) fn post_body(&self, path: &Path) -> Option<&str> {
+ self.body.get(path.name()).map(|s| s.trim_matches('\n'))
+ }
+
+ pub(crate) fn rename(&self, item_name: &mut String) {
+ if let Some(name) = self.rename.get(item_name) {
+ *item_name = name.clone();
+ if self.renaming_overrides_prefixing {
+ return;
+ }
+ }
+ if let Some(ref prefix) = self.prefix {
+ item_name.insert_str(0, prefix);
+ }
+ }
+}
+
+/// Settings to apply to generated types with layout modifiers.
+#[derive(Debug, Default, Clone, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct LayoutConfig {
+ /// The way to annotate C types as #[repr(packed)].
+ pub packed: Option<String>,
+ /// The way to annotate C types as #[repr(align(...))]. This is assumed to be a functional
+ /// macro which takes a single argument (the alignment).
+ pub aligned_n: Option<String>,
+}
+
+impl LayoutConfig {
+ pub(crate) fn ensure_safe_to_represent(&self, align: &ReprAlign) -> Result<(), String> {
+ match (align, &self.packed, &self.aligned_n) {
+ (ReprAlign::Packed, None, _) => Err("Cannot safely represent #[repr(packed)] type without configured 'packed' annotation.".to_string()),
+ (ReprAlign::Align(_), _, None) => Err("Cannot safely represent #[repr(aligned(...))] type without configured 'aligned_n' annotation.".to_string()),
+ _ => Ok(()),
+ }
+ }
+}
+
+/// Settings to apply to generated functions.
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct FunctionConfig {
+ /// Optional text to output before each function declaration
+ pub prefix: Option<String>,
+ /// Optional text to output after each function declaration
+ pub postfix: Option<String>,
+ /// The way to annotation this function as #[must_use]
+ pub must_use: Option<String>,
+ /// The way to annotation this function as #[deprecated] without notes
+ pub deprecated: Option<String>,
+ /// The way to annotation this function as #[deprecated] with notes
+ pub deprecated_with_note: Option<String>,
+ /// The style to layout the args
+ pub args: Layout,
+ /// The rename rule to apply to function args
+ pub rename_args: RenameRule,
+ /// An optional macro to use when generating Swift function name attributes
+ pub swift_name_macro: Option<String>,
+ /// Sort key for functions
+ pub sort_by: Option<SortKey>,
+ /// Optional text to output after functions which return `!`.
+ pub no_return: Option<String>,
+}
+
+impl Default for FunctionConfig {
+ fn default() -> FunctionConfig {
+ FunctionConfig {
+ prefix: None,
+ postfix: None,
+ must_use: None,
+ deprecated: None,
+ deprecated_with_note: None,
+ args: Layout::Auto,
+ rename_args: RenameRule::None,
+ swift_name_macro: None,
+ sort_by: None,
+ no_return: None,
+ }
+ }
+}
+
+impl FunctionConfig {
+ pub(crate) fn prefix(&self, annotations: &AnnotationSet) -> Option<String> {
+ if let Some(x) = annotations.atom("prefix") {
+ return x;
+ }
+ self.prefix.clone()
+ }
+
+ pub(crate) fn postfix(&self, annotations: &AnnotationSet) -> Option<String> {
+ if let Some(x) = annotations.atom("postfix") {
+ return x;
+ }
+ self.postfix.clone()
+ }
+}
+
+/// Settings to apply to generated structs.
+#[derive(Debug, Default, Clone, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct StructConfig {
+ /// The rename rule to apply to the name of struct fields
+ pub rename_fields: RenameRule,
+ /// Whether to generate a constructor for the struct (which takes
+ /// arguments to initialize all the members)
+ pub derive_constructor: bool,
+ /// Whether to generate a piecewise equality operator
+ pub derive_eq: bool,
+ /// Whether to generate a piecewise inequality operator
+ pub derive_neq: bool,
+ /// Whether to generate a less than operator on structs with one field
+ pub derive_lt: bool,
+ /// Whether to generate a less than or equal to operator on structs with one field
+ pub derive_lte: bool,
+ /// Whether to generate a greater than operator on structs with one field
+ pub derive_gt: bool,
+ /// Whether to generate a greater than or equal to operator on structs with one field
+ pub derive_gte: bool,
+ /// Whether to generate a ostream serializer for the struct
+ pub derive_ostream: bool,
+ /// Whether associated constants should be in the body. Only applicable to
+ /// non-transparent structs, and in C++-only.
+ pub associated_constants_in_body: bool,
+ /// The way to annotate this struct as #[must_use].
+ pub must_use: Option<String>,
+ /// The way to annotation this function as #[deprecated] without notes
+ pub deprecated: Option<String>,
+ /// The way to annotation this function as #[deprecated] with notes
+ pub deprecated_with_note: Option<String>,
+}
+
+impl StructConfig {
+ pub(crate) fn derive_constructor(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-constructor") {
+ return x;
+ }
+ self.derive_constructor
+ }
+ pub(crate) fn derive_eq(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-eq") {
+ return x;
+ }
+ self.derive_eq
+ }
+ pub(crate) fn derive_neq(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-neq") {
+ return x;
+ }
+ self.derive_neq
+ }
+ pub(crate) fn derive_lt(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-lt") {
+ return x;
+ }
+ self.derive_lt
+ }
+ pub(crate) fn derive_lte(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-lte") {
+ return x;
+ }
+ self.derive_lte
+ }
+ pub(crate) fn derive_gt(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-gt") {
+ return x;
+ }
+ self.derive_gt
+ }
+ pub(crate) fn derive_gte(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-gte") {
+ return x;
+ }
+ self.derive_gte
+ }
+ pub(crate) fn derive_ostream(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-ostream") {
+ return x;
+ }
+ self.derive_ostream
+ }
+}
+
+/// Settings to apply to generated enums.
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct EnumConfig {
+ /// The rename rule to apply to the name of enum variants
+ pub rename_variants: RenameRule,
+ /// The rename rule to apply to the names of the union fields in C/C++
+ /// generated from the Rust enum. Applied before rename_variants
+ /// rename rule. Defaults to SnakeCase.
+ pub rename_variant_name_fields: RenameRule,
+ /// Whether to add a `Sentinel` value at the end of every enum
+ /// This is useful in Gecko for IPC serialization
+ pub add_sentinel: bool,
+ /// Whether the enum variants should be prefixed with the enum name
+ pub prefix_with_name: bool,
+ /// Whether to generate static `::X(..)` constructors and `IsX()`
+ /// methods for tagged enums.
+ pub derive_helper_methods: bool,
+ /// Whether to generate `AsX() const` methods for tagged enums.
+ pub derive_const_casts: bool,
+ /// Whether to generate `AsX()` methods for tagged enums.
+ pub derive_mut_casts: bool,
+ /// The name of the macro to use for `derive_{const,mut}casts`. If custom, you're
+ /// responsible to provide the necessary header, otherwise `assert` will be
+ /// used, and `<cassert>` will be included.
+ pub cast_assert_name: Option<String>,
+ /// The way to annotation this enum as #[must_use].
+ pub must_use: Option<String>,
+ /// The way to annotation this function as #[deprecated] without notes
+ pub deprecated: Option<String>,
+ /// The way to annotation this function as #[deprecated] with notes
+ pub deprecated_with_note: Option<String>,
+ /// Whether to generate destructors of tagged enums.
+ pub derive_tagged_enum_destructor: bool,
+ /// Whether to generate copy-constructors of tagged enums.
+ pub derive_tagged_enum_copy_constructor: bool,
+ /// Whether to generate copy-assignment operators of tagged enums.
+ ///
+ /// This is only generated if a copy constructor for the same tagged enum is
+ /// generated as well.
+ pub derive_tagged_enum_copy_assignment: bool,
+ /// Whether to generate a ostream serializer for the struct
+ pub derive_ostream: bool,
+ /// Declare the enum as an enum class.
+ /// Only relevant when targeting C++.
+ pub enum_class: bool,
+ /// Whether to generate empty, private default-constructors for tagged
+ /// enums.
+ pub private_default_tagged_enum_constructor: bool,
+}
+
+impl Default for EnumConfig {
+ fn default() -> EnumConfig {
+ EnumConfig {
+ rename_variants: RenameRule::None,
+ rename_variant_name_fields: RenameRule::SnakeCase,
+ add_sentinel: false,
+ prefix_with_name: false,
+ derive_helper_methods: false,
+ derive_const_casts: false,
+ derive_mut_casts: false,
+ cast_assert_name: None,
+ must_use: None,
+ deprecated: None,
+ deprecated_with_note: None,
+ derive_tagged_enum_destructor: false,
+ derive_tagged_enum_copy_constructor: false,
+ derive_tagged_enum_copy_assignment: false,
+ derive_ostream: false,
+ enum_class: true,
+ private_default_tagged_enum_constructor: false,
+ }
+ }
+}
+
+impl EnumConfig {
+ pub(crate) fn add_sentinel(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("add-sentinel") {
+ return x;
+ }
+ self.add_sentinel
+ }
+ pub(crate) fn derive_helper_methods(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-helper-methods") {
+ return x;
+ }
+ self.derive_helper_methods
+ }
+ pub(crate) fn derive_const_casts(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-const-casts") {
+ return x;
+ }
+ self.derive_const_casts
+ }
+ pub(crate) fn derive_mut_casts(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-mut-casts") {
+ return x;
+ }
+ self.derive_mut_casts
+ }
+ pub(crate) fn derive_tagged_enum_destructor(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-tagged-enum-destructor") {
+ return x;
+ }
+ self.derive_tagged_enum_destructor
+ }
+ pub(crate) fn derive_tagged_enum_copy_constructor(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-tagged-enum-copy-constructor") {
+ return x;
+ }
+ self.derive_tagged_enum_copy_constructor
+ }
+ pub(crate) fn derive_tagged_enum_copy_assignment(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-tagged-enum-copy-assignment") {
+ return x;
+ }
+ self.derive_tagged_enum_copy_assignment
+ }
+ pub(crate) fn derive_ostream(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("derive-ostream") {
+ return x;
+ }
+ self.derive_ostream
+ }
+ pub(crate) fn enum_class(&self, annotations: &AnnotationSet) -> bool {
+ if let Some(x) = annotations.bool("enum-class") {
+ return x;
+ }
+ self.enum_class
+ }
+ pub(crate) fn private_default_tagged_enum_constructor(
+ &self,
+ annotations: &AnnotationSet,
+ ) -> bool {
+ if let Some(x) = annotations.bool("private-default-tagged-enum-constructor") {
+ return x;
+ }
+ self.private_default_tagged_enum_constructor
+ }
+}
+
+/// Settings to apply to generated constants.
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct ConstantConfig {
+ /// Whether a generated constant can be a static const in C++ mode.
+ pub allow_static_const: bool,
+ /// Whether a generated constant should be constexpr in C++ mode.
+ pub allow_constexpr: bool,
+ /// Sort key for constants
+ pub sort_by: Option<SortKey>,
+}
+
+impl Default for ConstantConfig {
+ fn default() -> ConstantConfig {
+ ConstantConfig {
+ allow_static_const: true,
+ allow_constexpr: true,
+ sort_by: None,
+ }
+ }
+}
+
+/// Settings for custom macro expansion.
+#[derive(Debug, Clone, Deserialize, Default)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct MacroExpansionConfig {
+ /// Whether the `bitflags` macro should be expanded.
+ pub bitflags: bool,
+}
+
+/// Controls which Cargo profile is used for macro expansion.
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+pub enum Profile {
+ Debug,
+ Release,
+}
+
+impl FromStr for Profile {
+ type Err = String;
+
+ fn from_str(s: &str) -> Result<Profile, Self::Err> {
+ match s {
+ "debug" | "Debug" => Ok(Profile::Debug),
+ "release" | "Release" => Ok(Profile::Release),
+ _ => Err(format!("Unrecognized Profile: '{}'.", s)),
+ }
+ }
+}
+
+deserialize_enum_str!(Profile);
+
+/// Settings to apply when running `rustc -Zunpretty=expanded`
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct ParseExpandConfig {
+ /// The names of crates to parse with `rustc -Zunpretty=expanded`
+ pub crates: Vec<String>,
+ /// Whether to enable all the features when expanding.
+ pub all_features: bool,
+ /// Whether to use the default feature set when expanding.
+ pub default_features: bool,
+ /// List of features to use when expanding. Combines with `default_features` like in
+ /// `Cargo.toml`.
+ pub features: Option<Vec<String>>,
+ /// Controls whether or not to pass `--release` when expanding.
+ pub profile: Profile,
+}
+
+impl Default for ParseExpandConfig {
+ fn default() -> ParseExpandConfig {
+ ParseExpandConfig {
+ crates: Vec::new(),
+ all_features: false,
+ default_features: true,
+ features: None,
+ profile: Profile::Debug,
+ }
+ }
+}
+
+// Backwards-compatibility deserializer for ParseExpandConfig. This allows accepting both the
+// simple `expand = ["crate"]` and the more complex `expand = {"crates": ["crate"],
+// "default_features": false}` format for the `expand` key.
+//
+// Note that one (major) difference between the two forms is that, for backwards-compatibility
+// reasons, the `expand = ["crate"]` form will enable the `--all-features` flag by default while
+// the `expand = {"crates": ["crate"]}` form will use the default feature set by default.
+fn retrocomp_parse_expand_config_deserialize<'de, D: Deserializer<'de>>(
+ deserializer: D,
+) -> Result<ParseExpandConfig, D::Error> {
+ struct ParseExpandVisitor;
+
+ impl<'de> Visitor<'de> for ParseExpandVisitor {
+ type Value = ParseExpandConfig;
+
+ fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+ formatter.write_str("a map or sequence of string")
+ }
+
+ fn visit_seq<A: SeqAccess<'de>>(self, seq: A) -> Result<Self::Value, A::Error> {
+ let crates =
+ <Vec<String> as Deserialize>::deserialize(SeqAccessDeserializer::new(seq))?;
+ Ok(ParseExpandConfig {
+ crates,
+ all_features: true,
+ default_features: true,
+ features: None,
+ profile: Profile::Debug,
+ })
+ }
+
+ fn visit_map<A: MapAccess<'de>>(self, map: A) -> Result<Self::Value, A::Error> {
+ <ParseExpandConfig as Deserialize>::deserialize(MapAccessDeserializer::new(map))
+ }
+ }
+
+ deserializer.deserialize_any(ParseExpandVisitor)
+}
+
+/// Settings to apply when parsing.
+#[derive(Debug, Default, Clone, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct ParseConfig {
+ /// Whether to parse dependencies when generating bindings. When this is true,
+ /// each dependent crate is found using a combination of `cargo metadata` and
+ /// `Cargo.lock`. To further control this behavior, crates can be whitelisted or
+ /// blacklisted using `include` and `exclude` respectively. Additionally in cases
+ /// where crates have types to expose in bindings hidden in macros, a crate can
+ /// be marked in `expand` and `cargo expand` will be used to expand the macros
+ /// before parsing. A crate marked in `expand` doesn't need to be added to any
+ /// whitelist.
+ pub parse_deps: bool,
+ /// An optional whitelist of names of crates to parse
+ pub include: Option<Vec<String>>,
+ /// The names of crates to not parse
+ pub exclude: Vec<String>,
+ /// The configuration options for `rustc -Zunpretty=expanded`
+ #[serde(deserialize_with = "retrocomp_parse_expand_config_deserialize")]
+ pub expand: ParseExpandConfig,
+ /// Whether to use a new temporary target directory when running `rustc -Zunpretty=expanded`.
+ /// This may be required for some build processes.
+ pub clean: bool,
+ /// List of crate names which generate consts, statics, and fns. By default
+ /// no dependent crates generate them.
+ pub extra_bindings: Vec<String>,
+}
+
+impl ParseConfig {
+ pub(crate) fn should_generate_top_level_item(
+ &self,
+ crate_name: &str,
+ binding_crate_name: &str,
+ ) -> bool {
+ if crate_name == binding_crate_name {
+ // Always generate items for the binding crate.
+ return true;
+ }
+
+ self.extra_bindings.iter().any(|dep| dep == crate_name)
+ }
+}
+
+/// Settings to apply to pointers
+#[derive(Debug, Clone, Default, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct PtrConfig {
+ /// Optional attribute to apply to pointers that are required to not be null
+ pub non_null_attribute: Option<String>,
+}
+
+/// Settings specific to Cython bindings.
+#[derive(Debug, Clone, Default, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct CythonConfig {
+ /// Header specified in the top level `cdef extern from header:` declaration.
+ pub header: Option<String>,
+ /// `from module cimport name1, name2, ...` declarations added in the same place
+ /// where you'd get includes in C.
+ pub cimports: BTreeMap<String, Vec<String>>,
+}
+
+/// A collection of settings to customize the generated bindings.
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(deny_unknown_fields)]
+#[serde(default)]
+pub struct Config {
+ /// Optional text to output at the beginning of the file
+ pub header: Option<String>,
+ /// A list of additional includes to put at the beginning of the generated header
+ pub includes: Vec<String>,
+ /// A list of additional system includes to put at the beginning of the generated header
+ pub sys_includes: Vec<String>,
+ /// Optional verbatim code added after the include blocks
+ pub after_includes: Option<String>,
+ /// Optional text to output at the end of the file
+ pub trailer: Option<String>,
+ /// Optional name to use for an include guard
+ pub include_guard: Option<String>,
+ /// Add a `#pragma once` guard
+ pub pragma_once: bool,
+ /// Generates no includes at all. Overrides all other include options
+ ///
+ /// This option is useful when using cbindgen with tools such as python's cffi which
+ /// doesn't understand include directives
+ pub no_includes: bool,
+ /// Optional text to output at major sections to deter manual editing
+ pub autogen_warning: Option<String>,
+ /// Include a comment with the version of cbindgen used to generate the file
+ pub include_version: bool,
+ /// An optional name for the root namespace. Only applicable when language="C++"
+ pub namespace: Option<String>,
+ /// An optional list of namespaces. Only applicable when language="C++"
+ pub namespaces: Option<Vec<String>>,
+ /// An optional list of namespaces to declare as using. Only applicable when language="C++"
+ pub using_namespaces: Option<Vec<String>>,
+ /// The style to use for braces
+ pub braces: Braces,
+ /// The preferred length of a line, used for auto breaking function arguments
+ pub line_length: usize,
+ /// The amount of spaces in a tab
+ pub tab_width: usize,
+ /// The type of line endings to generate
+ pub line_endings: LineEndingStyle,
+ /// The language to output bindings for
+ pub language: Language,
+ /// Include preprocessor defines in C bindings to ensure C++ compatibility
+ pub cpp_compat: bool,
+ /// The style to declare structs, enums and unions in for C
+ pub style: Style,
+ /// Default sort key for functions and constants.
+ pub sort_by: SortKey,
+ /// If this option is true `usize` and `isize` will be converted into `size_t` and `ptrdiff_t`
+ /// instead of `uintptr_t` and `intptr_t` respectively.
+ pub usize_is_size_t: bool,
+ /// The configuration options for parsing
+ pub parse: ParseConfig,
+ /// The configuration options for exporting
+ pub export: ExportConfig,
+ /// The configuration options for macros.
+ pub macro_expansion: MacroExpansionConfig,
+ /// The configuration options for type layouts.
+ pub layout: LayoutConfig,
+ /// The configuration options for functions
+ #[serde(rename = "fn")]
+ pub function: FunctionConfig,
+ /// The configuration options for structs
+ #[serde(rename = "struct")]
+ pub structure: StructConfig,
+ /// The configuration options for enums
+ #[serde(rename = "enum")]
+ pub enumeration: EnumConfig,
+ /// The configuration options for constants
+ #[serde(rename = "const")]
+ pub constant: ConstantConfig,
+ /// Preprocessor defines to use when generating #ifdef's for #[cfg]
+ pub defines: HashMap<String, String>,
+ /// Include doc comments from Rust as documentation
+ pub documentation: bool,
+ /// How documentation comments should be styled.
+ pub documentation_style: DocumentationStyle,
+ /// How much of the documentation should be output for each item.
+ pub documentation_length: DocumentationLength,
+ /// Configuration options for pointers
+ #[serde(rename = "ptr")]
+ pub pointer: PtrConfig,
+ /// Only download sources for dependencies needed for the target platform.
+ ///
+ /// By default, cbindgen will fetch sources for dependencies used on any platform so that if a
+ /// type is defined in terms of a type from a dependency on another target (probably behind a
+ /// `#[cfg]`), cbindgen will be able to generate the appropriate binding as it can see the
+ /// nested type's definition. However, this makes calling cbindgen slower, as it may have to
+ /// download a number of additional dependencies.
+ ///
+ /// As an example, consider this Cargo.toml:
+ ///
+ /// ```toml
+ /// [target.'cfg(windows)'.dependencies]
+ /// windows = "0.7"
+ /// ```
+ ///
+ /// with this declaration in one of the `.rs` files that cbindgen is asked to generate bindings
+ /// for:
+ ///
+ /// ```rust,ignore
+ /// #[cfg(windows)]
+ /// pub struct Error(windows::ErrorCode);
+ /// ```
+ ///
+ /// With the default value (`false`), cbindgen will download the `windows` dependency even when
+ /// not compiling for Windows, and will thus be able to generate the binding for `Error`
+ /// (behind a `#define`).
+ ///
+ /// If this value is instead to `true`, cbindgen will _not_ download the `windows` dependency
+ /// if it's not compiling for Windows, but will also fail to generate a Windows binding for
+ /// `Error` as it does not know the definition for `ErrorCode`.
+ ///
+ /// The target can be chosen via the `TARGET` environment variable (if used
+ /// via the CLI, when ran from a build script cargo sets this variable
+ /// appropriately).
+ pub only_target_dependencies: bool,
+ /// Configuration options specific to Cython.
+ pub cython: CythonConfig,
+ #[serde(skip)]
+ pub(crate) config_path: Option<StdPathBuf>,
+}
+
+impl Default for Config {
+ fn default() -> Config {
+ Config {
+ header: None,
+ includes: Vec::new(),
+ sys_includes: Vec::new(),
+ after_includes: None,
+ trailer: None,
+ include_guard: None,
+ pragma_once: false,
+ autogen_warning: None,
+ include_version: false,
+ no_includes: false,
+ namespace: None,
+ namespaces: None,
+ using_namespaces: None,
+ braces: Braces::SameLine,
+ line_length: 100,
+ tab_width: 2,
+ line_endings: LineEndingStyle::default(),
+ language: Language::Cxx,
+ cpp_compat: false,
+ style: Style::default(),
+ usize_is_size_t: false,
+ sort_by: SortKey::None,
+ macro_expansion: Default::default(),
+ parse: ParseConfig::default(),
+ export: ExportConfig::default(),
+ layout: LayoutConfig::default(),
+ function: FunctionConfig::default(),
+ structure: StructConfig::default(),
+ enumeration: EnumConfig::default(),
+ constant: ConstantConfig::default(),
+ defines: HashMap::new(),
+ documentation: true,
+ documentation_style: DocumentationStyle::Auto,
+ documentation_length: DocumentationLength::Full,
+ pointer: PtrConfig::default(),
+ only_target_dependencies: false,
+ cython: CythonConfig::default(),
+ config_path: None,
+ }
+ }
+}
+
+impl Config {
+ pub(crate) fn cpp_compatible_c(&self) -> bool {
+ self.language == Language::C && self.cpp_compat
+ }
+
+ pub(crate) fn include_guard(&self) -> Option<&str> {
+ if self.language == Language::Cython {
+ None
+ } else {
+ self.include_guard.as_deref()
+ }
+ }
+
+ pub(crate) fn includes(&self) -> &[String] {
+ if self.language == Language::Cython {
+ &[]
+ } else {
+ &self.includes
+ }
+ }
+
+ pub(crate) fn sys_includes(&self) -> &[String] {
+ if self.language == Language::Cython {
+ &[]
+ } else {
+ &self.sys_includes
+ }
+ }
+
+ pub fn from_file<P: AsRef<StdPath>>(file_name: P) -> Result<Config, String> {
+ let config_text = fs::read_to_string(file_name.as_ref()).map_err(|_| {
+ format!(
+ "Couldn't open config file: {}.",
+ file_name.as_ref().display()
+ )
+ })?;
+
+ let mut config = toml::from_str::<Config>(&config_text)
+ .map_err(|e| format!("Couldn't parse config file: {}.", e))?;
+ config.config_path = Some(StdPathBuf::from(file_name.as_ref()));
+ Ok(config)
+ }
+
+ pub fn from_root_or_default<P: AsRef<StdPath>>(root: P) -> Config {
+ let c = root.as_ref().join("cbindgen.toml");
+
+ if c.exists() {
+ Config::from_file(c).unwrap()
+ } else {
+ Config::default()
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-09 20:32:23 +0000