tiny C backend for a much faster REPL

lib/wrappers/tinyc.nim

@@ -0,0 +1,118 @@
+#
+#
+#            Nimrod's Runtime Library
+#        (c) Copyright 2010 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+type
+  TccState {.pure, final.} = object
+  PccState* = ptr TccState
+  
+  TErrorFunc* = proc (opaque: pointer, msg: cstring) {.cdecl.}
+
+proc openCCState*(): PccState {.importc: "tcc_new", cdecl.}
+  ## create a new TCC compilation context
+
+proc closeCCState*(s: PccState) {.importc: "tcc_delete", cdecl.}
+  ## free a TCC compilation context
+
+proc enableDebug*(s: PccState) {.importc: "tcc_enable_debug", cdecl.}
+  ## add debug information in the generated code
+
+proc setErrorFunc*(s: PccState, errorOpaque: pointer, errorFun: TErrorFunc) {.
+  cdecl, importc: "tcc_set_error_func".}
+  ## set error/warning display callback
+
+proc setWarning*(s: PccState, warningName: cstring, value: int) {.cdecl,
+  importc: "tcc_set_warning".}
+  ## set/reset a warning
+
+# preprocessor 
+
+proc addIncludePath*(s: PccState, pathname: cstring) {.cdecl, 
+  importc: "tcc_add_include_path".}
+  ## add include path
+
+proc addSysincludePath*(s: PccState, pathname: cstring) {.cdecl, 
+  importc: "tcc_add_sysinclude_path".}
+  ## add in system include path
+
+
+proc defineSymbol*(s: PccState, sym, value: cstring) {.cdecl, 
+  importc: "tcc_define_symbol".}
+  ## define preprocessor symbol 'sym'. Can put optional value
+
+proc undefineSymbol*(s: PccState, sym: cstring) {.cdecl, 
+  importc: "tcc_undefine_symbol".}
+  ## undefine preprocess symbol 'sym'
+
+# compiling 
+
+proc addFile*(s: PccState, filename: cstring): cint {.cdecl, 
+  importc: "tcc_add_file".}
+  ## add a file (either a C file, dll, an object, a library or an ld
+  ## script). Return -1 if error.
+
+proc compileString*(s: PccState, buf: cstring): cint {.cdecl, 
+  importc: "tcc_compile_string".}
+  ## compile a string containing a C source. Return non zero if error.
+
+# linking commands
+
+
+const
+  OutputMemory*: cint = 0 ## output will be ran in memory (no
+                          ## output file) (default)
+  OutputExe*: cint = 1 ## executable file
+  OutputDll*: cint = 2 ## dynamic library
+  OutputObj*: cint = 3 ## object file
+  OutputPreprocess*: cint = 4 ## preprocessed file (used internally)
+  
+  OutputFormatElf*: cint = 0 ## default output format: ELF
+  OutputFormatBinary*: cint = 1 ## binary image output
+  OutputFormatCoff*: cint = 2 ## COFF
+
+proc setOutputType*(s: PCCState, outputType: cint): cint {.cdecl, 
+  importc: "tcc_set_output_type".}
+  ## set output type. MUST BE CALLED before any compilation
+
+proc addLibraryPath*(s: PccState, pathname: cstring): cint {.cdecl,
+  importc: "tcc_add_library_path".}
+  ## equivalent to -Lpath option
+
+proc addLibrary*(s: PCCState, libraryname: cstring): cint {.cdecl,
+  importc: "tcc_add_library".}
+  ## the library name is the same as the argument of the '-l' option
+
+proc addSymbol*(s: PccState, name: cstring, val: pointer): cint {.cdecl,
+  importc: "tcc_add_symbol".}
+  ## add a symbol to the compiled program
+
+proc outputFile*(s: PccState, filename: cstring): cint {.cdecl,
+  importc: "tcc_output_file".}
+  ## output an executable, library or object file. DO NOT call
+  ## tcc_relocate() before.
+
+proc run*(s: PccState, argc: cint, argv: cstringArray): cint {.cdecl,
+  importc: "tcc_run".}
+  ## link and run main() function and return its value. DO NOT call
+  ## tcc_relocate() before.
+
+proc relocate*(s: PccState, p: pointer): cint {.cdecl,
+  importc: "tcc_relocate".}
+  ## copy code into memory passed in by the caller and do all relocations
+  ## (needed before using tcc_get_symbol()).
+  ## returns -1 on error and required size if ptr is NULL
+
+proc getSymbol*(s: PccState, name: cstring): pointer {.cdecl,
+  importc: "tcc_get_symbol".}
+  ## return symbol value or NULL if not found
+
+proc setLibPath*(s: PccState, path: cstring) {.cdecl,
+  importc: "tcc_set_lib_path".}
+  ## set CONFIG_TCCDIR at runtime
+  
+