#compdef rustc
  
  local -a _rustc_opts_switches _rustc_opts_lint _rustc_opts_debug
  
  typeset -A opt_args
  
  _rustc_debuginfo_levels=(
      "0[no debug info]"
      "1[line-tables only (for stacktraces and breakpoints)]"
      "2[full debug info with variable and type information (same as -g)]"
  )
  
  _rustc_crate_types=(
      'bin'
      'lib'
      'rlib'
      'dylib'
      'staticlib'
  )
  
  _rustc_emit_types=(
      'asm'
      'bc'
      'ir'
      'obj'
      'link'
  )
  _rustc_pretty_types=(
      'normal[un-annotated source]'
      'expanded[crates expanded]'
      'typed[crates  expanded,  with  type  annotations]'
      'identified[fully parenthesized, AST nodes and blocks with IDs]'
      'flowgraph=[graphviz formatted flowgraph for node]:NODEID:'
  )
  _rustc_color_types=(
      'auto[colorize, if output goes to a tty (default)]'
      'always[always colorize output]'
      'never[never colorize output]'
  )
  
  _rustc_opts_vals=(
      --crate-name='[Specify the name of the crate being built]'
      --crate-type='[Comma separated list of types of crates for the compiler to emit]:TYPES:_values -s "," "Crate types"  "$_rustc_crate_types[@]"'
      --emit='[Comma separated list of types of output for the compiler to emit]:TYPES:_values -s "," "Emit Targets" "$_rustc_emit_types[@]"'
      --debuginfo='[Emit DWARF debug info to the objects created]:LEVEL:_values "Debug Levels" "$_rustc_debuginfo_levels[@]"'
      --dep-info='[Output dependency info to <filename> after compiling]::FILE:_files -/'
      --sysroot='[Override the system root]:PATH:_files -/'
      --cfg='[Configure the compilation environment]:SPEC:'
      --out-dir='[Write output to compiler-chosen filename in <dir>.  Ignored  if  -o  is  specified. (default the current directory)]:DIR:_files -/'
      -o'[Write output to <filename>. Ignored if more than one --emit is specified.]:FILENAME:_files'
      --opt-level='[Optimize with possible levels 0-3]:LEVEL:(0 1 2 3)'
      --pretty='[Pretty-print the input instead of compiling]::TYPE:_values "TYPES" "$_rustc_pretty_types[@]"'
      -L'[Add a directory to the library search path]:DIR:_files -/'
      --target='[Target triple cpu-manufacturer-kernel\[-os\] to compile]:TRIPLE:'
      --color='[Configure coloring of output]:CONF:_values "COLORS" "$_rustc_color_types[@]"'
      {-v,--version}'[Print version info and exit]::VERBOSE:(verbose)'
      --explain='[Provide a detailed explanation of an error message]:OPT:'
      --extern'[Specify where an external rust library is located]:ARG:'
  )
  
  _rustc_opts_switches=(
      -g'[Equivalent to --debuginfo=2]'
      {-h,--help}'[Display this message]'
      --no-analysis'[Parse and expand the output, but run no analysis or produce output]'
      --no-trans'[Run all passes except translation; no output]'
      -O'[Equivalent to --opt-level=2]'
      --parse-only'[Parse only; do not compile, assemble, or link]'
      --print-crate-name'[Output the crate name and exit]'
      --print-file-name'[Output the file(s) that would be written if compilation continued and exit]'
      --test'[Build a test harness]'
  )
  _rustc_opts_codegen=(
      'ar=[Path to the archive utility to use when assembling archives.]:BIN:_path_files'
      'linker=[Path to the linker utility to use when linking libraries, executables, and objects.]:BIN:_path_files'
      'link-args=[A space-separated list of extra arguments to pass to the linker when the linker is invoked.]:ARGS:'
      'target-cpu=[Selects a target processor. If the value is "help", then a list of  available  CPUs is printed.]:CPU:'
      'target-feature=[A space-separated list of features to enable or disable for the target. A preceding "+" enables a feature while a preceding "-" disables it. Available features can be discovered through target-cpu=help.]:FEATURE:'
      'passes=[A space-separated list of extra LLVM passes to run. A value of "list" will cause rustc to print all known passes and exit. The passes specified are appended at the end of the normal pass manager.]:LIST:'
      'llvm-args=[A space-separated list of arguments to pass through to LLVM.]:ARGS:'
      'save-temps[If specified, the compiler will save more files (.bc, .o, .no-opt.bc) generated throughout compilation in the output directory.]'
      'rpath[If specified, then the rpath value for dynamic libraries will be set in either dynamic library or executable outputs.]'
      'no-prepopulate-passes[Suppresses pre-population of the LLVM pass manager that is run over the module.]'
      'no-vectorize-loops[Suppresses running the loop vectorization LLVM pass, regardless of optimization level.]'
      'no-vectorize-slp[Suppresses running the LLVM SLP vectorization pass, regardless of optimization level.]'
      'soft-float[Generates software floating point library calls instead of hardware instructions.]'
      'prefer-dynamic[Prefers dynamic linking to static linking.]'
      "no-integrated-as[Force usage of an external assembler rather than LLVM's integrated one.]"
      'no-redzone[disable the use of the redzone]'
      'relocation-model=[The relocation model to use. (default: pic)]:MODEL:(pic static dynamic-no-pic)'
      'code-model=[choose the code model to use (llc -code-model for details)]:MODEL:'
      'metadata=[metadata to mangle symbol names with]:VAL:'
      'extra-filenames=[extra data to put in each output filename]:VAL:'
      'codegen-units=[divide crate into N units to optimize in parallel]:N:'
      'help[Show all codegen options]'
  )
  
  _rustc_opts_lint=(
      'help[Show a list of all lints]'
      'experimental[detects use of #\[experimental\] items]'
      'heap-memory[use of any (Box type or @ type) heap memory]'
      'managed-heap-memory[use of managed (@ type) heap memory]'
      'missing-doc[detects missing documentation for public members]'
      'non-uppercase-statics[static constants should have uppercase identifiers]'
      'owned-heap-memory[use of owned (~ type) heap memory]'
      'unnecessary-qualification[detects unnecessarily qualified names]'
      'unsafe-block[usage of an `unsafe` block]'
      'unstable[detects use of #\[unstable\] items (incl. items with no stability attribute)]'
      'unused-result[unused result of an expression in a statement]'
      'variant-size-difference[detects enums with widely varying variant sizes]'
      'ctypes[proper use of libc types in foreign modules]'
      'dead-assignment[detect assignments that will never be read]'
      'dead-code[detect piece of code that will never be used]'
      'deprecated[detects use of #\[deprecated\] items]'
      'non-camel-case-types[types, variants and traits should have camel case names]'
      'non-snake-case[methods, functions, lifetime parameters and modules should have snake case names]'
      'path-statement[path statements with no effect]'
      'raw-pointer-deriving[uses of #\[deriving\] with raw pointers are rarely correct]'
      'type-limits[comparisons made useless by limits of the types involved]'
      'type-overflow[literal out of range for its type]'
      'unnecessary-allocation[detects unnecessary allocations that can be eliminated]'
      'unnecessary-parens[`if`, `match`, `while` and `return` do not need parentheses]'
      'unreachable-code[detects unreachable code]'
      'unrecognized-lint[unrecognized lint attribute]'
      'unsigned-negate[using an unary minus operator on unsigned type]'
      'unused-attribute[detects attributes that were not used by the compiler]'
      'unused-imports[imports that are never used]'
      'unused-must-use[unused result of a type flagged as #\[must_use\]]'
      "unused-mut[detect mut variables which don't need to be mutable]"
      'unused-unsafe[unnecessary use of an `unsafe` block]'
      'unused-variable[detect variables which are not used in any way]'
      'visible-private-types[detect use of private types in exported type signatures]'
      'warnings[mass-change the level for lints which produce warnings]'
      'while-true[suggest using `loop { }` instead of `while true { }`]'
      'unknown-crate-type[unknown crate type found in #\[crate_type\] directive]'
      'unknown-features[unknown features found in crate-level #\[feature\] directives]'
      'bad-style[group of non_camel_case_types, non_snake_case, non_uppercase_statics]'
      'unused[group of unused_imports, unused_variable, dead_assignment, dead_code, unused_mut, unreachable_code]'
  )
  
  _rustc_opts_debug=(
      'verbose[in general, enable more debug printouts]'
      'time-passes[measure time of each rustc pass]'
      'count-llvm-insns[count where LLVM instrs originate]'
      'time-llvm-passes[measure time of each LLVM pass]'
      'trans-stats[gather trans statistics]'
      'asm-comments[generate comments into the assembly (may change behavior)]'
      'no-verify[skip LLVM verification]'
      'borrowck-stats[gather borrowck statistics]'
      'no-landing-pads[omit landing pads for unwinding]'
      'debug-llvm[enable debug output from LLVM]'
      'show-span[show spans for compiler debugging]'
      'count-type-sizes[count the sizes of aggregate types]'
      'meta-stats[gather metadata statistics]'
      'no-opt[do not optimize, even if -O is passed]'
      'print-link-args[Print the arguments passed to the linker]'
      'gc[Garbage collect shared data (experimental)]'
      'print-llvm-passes[Prints the llvm optimization passes being run]'
      'lto[Perform LLVM link-time optimizations]'
      'ast-json[Print the AST as JSON and halt]'
      'ast-json-noexpand[Print the pre-expansion AST as JSON and halt]'
      'ls[List the symbols defined by a library crate]'
      'save-analysis[Write syntax and type analysis information in addition to normal output]'
      'flowgraph-print-loans[Include loan analysis data in --pretty flowgraph output]'
      'flowgraph-print-moves[Include move analysis data in --pretty flowgraph output]'
      'flowgraph-print-assigns[Include assignment analysis data in --pretty flowgraph output]'
      'flowgraph-print-all[Include all dataflow analysis data in --pretty flowgraph output]'
  )
  
  _rustc_opts_fun_lint(){
      _values -s , 'options' \
          "$_rustc_opts_lint[@]"
  }
  
  _rustc_opts_fun_debug(){
      _values 'options' "$_rustc_opts_debug[@]"
  }
  
  _rustc_opts_fun_codegen(){
      _values 'options' "$_rustc_opts_codegen[@]"
  }
  
  _arguments -s :  \
      '(-W --warn)'{-W,--warn=}'[Set lint warnings]:lint options:_rustc_opts_fun_lint' \
      '(-A --allow)'{-A,--allow=}'[Set lint allowed]:lint options:_rustc_opts_fun_lint' \
      '(-D --deny)'{-D,--deny=}'[Set lint denied]:lint options:_rustc_opts_fun_lint' \
      '(-F --forbid)'{-F,--forbid=}'[Set lint forbidden]:lint options:_rustc_opts_fun_lint' \
      '*-Z[Set internal debugging options]:debug options:_rustc_opts_fun_debug' \
      '*-C[Set internal Codegen options]:codegen options:_rustc_opts_fun_codegen' \
      "$_rustc_opts_switches[@]" \
      "$_rustc_opts_vals[@]" \
      '::files:_files -g "*.rs"'