C bindings (#256)

Cargo.toml

@@ -1,7 +1,8 @@
 [workspace]
 members = [
   "node",
-  "selectors"
+  "selectors",
+  "c"
 ]
 
 [package]
@@ -55,6 +56,7 @@ serde_json = "1"
 
 [features]
 default = ["grid"]
+browserslist = ["browserslist-rs"]
 cli = ["clap", "serde_json", "pathdiff", "browserslist-rs", "jemallocator"]
 grid = []
 serde = ["smallvec/serde", "cssparser/serde"]

c/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+authors = ["Devon Govett <devongovett@gmail.com>"]
+name = "parcel_css_c_bindings"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+parcel_css = { path = "../", features = ["browserslist"] }
+parcel_sourcemap = { version = "2.1.0", features = ["json"] }
+browserslist-rs = { version = "0.7.0" }
+
+[build-dependencies]
+cbindgen = "0.24.3"

c/build.rs

@@ -0,0 +1,11 @@
+extern crate cbindgen;
+
+use std::env;
+
+fn main() {
+  let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
+
+  cbindgen::generate(crate_dir)
+    .expect("Unable to generate bindings")
+    .write_to_file("parcel_css.h");
+}

c/cbindgen.toml

@@ -0,0 +1,11 @@
+language = "C"
+
+[parse]
+parse_deps = true
+include = ["parcel_css"]
+
+[export.rename]
+StyleSheetWrapper = "StyleSheet"
+
+[enum]
+prefix_with_name = true

c/parcel_css.h

@@ -0,0 +1,159 @@
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef struct CssError CssError;
+
+typedef struct StyleSheet StyleSheet;
+
+typedef struct Targets {
+  uint32_t android;
+  uint32_t chrome;
+  uint32_t edge;
+  uint32_t firefox;
+  uint32_t ie;
+  uint32_t ios_saf;
+  uint32_t opera;
+  uint32_t safari;
+  uint32_t samsung;
+} Targets;
+
+typedef struct ParseOptions {
+  const char *filename;
+  bool nesting;
+  bool custom_media;
+  bool css_modules;
+  const char *css_modules_pattern;
+  bool css_modules_dashed_idents;
+  bool error_recovery;
+} ParseOptions;
+
+typedef struct TransformOptions {
+  struct Targets targets;
+  char **unused_symbols;
+  uintptr_t unused_symbols_len;
+} TransformOptions;
+
+typedef struct RawString {
+  char *text;
+  uintptr_t len;
+} RawString;
+
+typedef enum CssModuleReference_Tag {
+  /**
+   * A local reference.
+   */
+  CssModuleReference_Local,
+  /**
+   * A global reference.
+   */
+  CssModuleReference_Global,
+  /**
+   * A reference to an export in a different file.
+   */
+  CssModuleReference_Dependency,
+} CssModuleReference_Tag;
+
+typedef struct CssModuleReference_Local_Body {
+  /**
+   * The local (compiled) name for the reference.
+   */
+  struct RawString name;
+} CssModuleReference_Local_Body;
+
+typedef struct CssModuleReference_Global_Body {
+  /**
+   * The referenced global name.
+   */
+  struct RawString name;
+} CssModuleReference_Global_Body;
+
+typedef struct CssModuleReference_Dependency_Body {
+  /**
+   * The name to reference within the dependency.
+   */
+  struct RawString name;
+  /**
+   * The dependency specifier for the referenced file.
+   */
+  struct RawString specifier;
+} CssModuleReference_Dependency_Body;
+
+typedef struct CssModuleReference {
+  CssModuleReference_Tag tag;
+  union {
+    CssModuleReference_Local_Body local;
+    CssModuleReference_Global_Body global;
+    CssModuleReference_Dependency_Body dependency;
+  };
+} CssModuleReference;
+
+typedef struct CssModuleExport {
+  struct RawString exported;
+  struct RawString local;
+  bool is_referenced;
+  struct CssModuleReference *composes;
+  uintptr_t composes_len;
+} CssModuleExport;
+
+typedef struct CssModulePlaceholder {
+  struct RawString placeholder;
+  struct CssModuleReference reference;
+} CssModulePlaceholder;
+
+typedef struct ToCssResult {
+  struct RawString code;
+  struct RawString map;
+  struct CssModuleExport *exports;
+  uintptr_t exports_len;
+  struct CssModulePlaceholder *references;
+  uintptr_t references_len;
+} ToCssResult;
+
+typedef struct PseudoClasses {
+  const char *hover;
+  const char *active;
+  const char *focus;
+  const char *focus_visible;
+  const char *focus_within;
+} PseudoClasses;
+
+typedef struct ToCssOptions {
+  bool minify;
+  bool source_map;
+  const char *input_source_map;
+  uintptr_t input_source_map_len;
+  struct Targets targets;
+  bool analyze_dependencies;
+  struct PseudoClasses pseudo_classes;
+} ToCssOptions;
+
+bool parcel_css_browserslist_to_targets(const char *query,
+                                        struct Targets *targets,
+                                        struct CssError **error);
+
+struct StyleSheet *parcel_css_stylesheet_parse(const char *source,
+                                               uintptr_t len,
+                                               struct ParseOptions options,
+                                               struct CssError **error);
+
+bool parcel_css_stylesheet_transform(struct StyleSheet *stylesheet,
+                                     struct TransformOptions options,
+                                     struct CssError **error);
+
+struct ToCssResult parcel_css_stylesheet_to_css(struct StyleSheet *stylesheet,
+                                                struct ToCssOptions options,
+                                                struct CssError **error);
+
+void parcel_css_stylesheet_free(struct StyleSheet *stylesheet);
+
+void parcel_css_to_css_result_free(struct ToCssResult result);
+
+const char *parcel_css_error_message(struct CssError *error);
+
+void parcel_css_error_free(struct CssError *error);
+
+uintptr_t parcel_css_stylesheet_get_warning_count(struct StyleSheet *stylesheet);
+
+const char *parcel_css_stylesheet_get_warning(struct StyleSheet *stylesheet, uintptr_t index);