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edi/src/bin/language/edi_language_provider_c.c

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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#if HAVE_LIBCLANG
#include <clang-c/Index.h>
#include <clang-c/CXCompilationDatabase.h>
#endif
#include <Eina.h>
#include <Elementary.h>
#include "edi_language_provider.h"
#include "edi_config.h"
#include "edi_private.h"
#if HAVE_LIBCLANG
static void
_clang_commands_fallback_get(const char ***args, unsigned int *argc)
{
const char *argstr;
argstr = "-I/usr/include/ " EFL_CFLAGS " " CLANG_INCLUDES " -Wall -Wextra";
*args = (const char **) eina_str_split_full(argstr, " ", 0, argc);
}
static void
_clang_commands_get(const char *path, const char ***args, unsigned int *argc)
{
CXCompilationDatabase_Error error;
CXCompilationDatabase database = NULL;
CXCompileCommands commands;
CXCompileCommand command;
const char** arguments;
unsigned int i, numargs, ignored = 0;
if (edi_project_file_exists("compile_commands.json"))
{
database = clang_CompilationDatabase_fromDirectory(edi_project_get(), &error);
}
else if (edi_project_file_exists("build/compile_commands.json"))
{
char *build = edi_project_file_path_get("build");
database = clang_CompilationDatabase_fromDirectory(build, &error);
free(build);
}
if (database == NULL || error == CXCompilationDatabase_CanNotLoadDatabase)
{
INF("Could not load compile_commands.json in %s", edi_project_get());
_clang_commands_fallback_get(args, argc);
return;
}
commands = clang_CompilationDatabase_getCompileCommands(database, path);
command = clang_CompileCommands_getCommand(commands, 0);
numargs = clang_CompileCommand_getNumArgs(command);
if (numargs == 0)
{
INF("File %s not found in compile_commands.json", path);
_clang_commands_fallback_get(args, argc);
return;
}
arguments = malloc(sizeof(char*) * (numargs + 1));
INF("Loading clang parameters for %s", path);
arguments[0] = CLANG_INCLUDES;
for(i = 1; i <= numargs; i++ )
{
const char *argstr;
CXString argument = clang_CompileCommand_getArg(command, i + 1);
argstr = clang_getCString(argument);
if (argstr && strlen(argstr) > 2 && argstr[0] == '-' &&
(argstr[1] == 'I' || argstr[1] == 'D'))
arguments[i - ignored] = strdup(argstr);
else
ignored++;
clang_disposeString(argument);
}
*args = arguments;
*argc = numargs + 1 - ignored;
clang_CompilationDatabase_dispose(database);
}
static void
_clang_autosuggest_setup(Edi_Editor *editor)
{
Elm_Code *code;
const char *path;
const char **args;
unsigned int argc;
code = elm_code_widget_code_get(editor->entry);
path = elm_code_file_path_get(code->file);
//Initialize Clang
_clang_commands_get(path, &args, &argc);
editor->clang_idx = clang_createIndex(0, 0);
editor->clang_unit = clang_parseTranslationUnit(editor->clang_idx, path,
args, argc, NULL, 0,
clang_defaultEditingTranslationUnitOptions() | CXTranslationUnit_DetailedPreprocessingRecord);
}
static void
_clang_autosuggest_dispose(Edi_Editor *editor)
{
clang_disposeTranslationUnit(editor->clang_unit);
clang_disposeIndex(editor->clang_idx);
}
#endif
void
_edi_language_c_add(Edi_Editor *editor)
{
#if HAVE_LIBCLANG
_clang_autosuggest_setup(editor);
#else
(void) editor;
#endif
}
void
_edi_language_c_refresh(Edi_Editor *editor)
{
#if HAVE_LIBCLANG
_clang_autosuggest_dispose(editor);
_clang_autosuggest_setup(editor);
#else
(void) editor;
#endif
}
void
_edi_language_c_del(Edi_Editor *editor)
{
#if HAVE_LIBCLANG
_clang_autosuggest_dispose(editor);
#else
(void) editor;
#endif
}
const char *
_edi_language_c_mime_name(const char *mime)
{
if (!strcasecmp(mime, "text/x-chdr"))
return _("C header");
if (!strcasecmp(mime, "text/x-csrc"))
return _("C source");
return NULL;
}
const char *
_edi_language_c_snippet_get(const char *key)
{
if (!strcmp(key, "ret"))
return "return";
if (!strcmp(key, "if"))
return
"if ()\n" \
" {\n" \
" }";
if (!strcmp(key, "ifel"))
return
"if ()\n" \
" {\n" \
" }\n" \
"else\n" \
" {\n" \
" }";
return NULL;
}
#if HAVE_LIBCLANG
char *
_edi_suggest_c_detail_get(Edi_Editor *editor, const char *term_str,
const char *ret_str, const char *param_str)
{
char *format, *display;
const char *font;
int font_size, displen;
unsigned int row, col;
Evas_Coord w;
elm_code_widget_font_get(editor->entry, &font, &font_size);
elm_code_widget_cursor_position_get(editor->entry, &row, &col);
elm_code_widget_geometry_for_position_get(editor->entry, row, col,
NULL, NULL, &w, NULL);
format = "<left_margin=%d><align=left><font='%s'><font_size=%d>%s<br><b>%s</b><br>%s</font_size></font></align></left_margin>";
displen = strlen(ret_str) + strlen(param_str) + strlen(term_str)
+ strlen(format) + strlen(font);
display = malloc(sizeof(char) * displen);
snprintf(display, displen, format, w, font, font_size, ret_str, term_str, param_str);
return display;
}
#endif
Eina_List *
_edi_language_c_lookup(Edi_Editor *editor, unsigned int row, unsigned int col)
{
Eina_List *list = NULL;
#if HAVE_LIBCLANG
CXCodeCompleteResults *res;
struct CXUnsavedFile unsaved_file;
Elm_Code *code;
const char *path = NULL;
if (!editor->clang_unit)
return list;
code = elm_code_widget_code_get(editor->entry);
if (code->file->file)
path = elm_code_file_path_get(code->file);
unsaved_file.Filename = path;
unsaved_file.Contents = elm_code_widget_text_between_positions_get(
editor->entry, 1, 1, row, col);
unsaved_file.Length = strlen(unsaved_file.Contents);
res = clang_codeCompleteAt(editor->clang_unit, path, row, col,
&unsaved_file, 1,
CXCodeComplete_IncludeMacros |
CXCodeComplete_IncludeCodePatterns);
clang_sortCodeCompletionResults(res->Results, res->NumResults);
for (unsigned int i = 0; i < res->NumResults; i++)
{
const CXCompletionString str = res->Results[i].CompletionString;
const char *name = NULL, *ret = NULL;
char *param = NULL;
Edi_Language_Suggest_Item *suggest_it;
Eina_Strbuf *buf = NULL;
suggest_it = calloc(1, sizeof(Edi_Language_Suggest_Item));
for (unsigned int j = 0; j < clang_getNumCompletionChunks(str); j++)
{
enum CXCompletionChunkKind ch_kind;
const CXString str_out = clang_getCompletionChunkText(str, j);
ch_kind = clang_getCompletionChunkKind(str, j);
switch (ch_kind)
{
case CXCompletionChunk_ResultType:
ret = clang_getCString(str_out);
break;
case CXCompletionChunk_TypedText:
case CXCompletionChunk_Text:
name = clang_getCString(str_out);
break;
case CXCompletionChunk_LeftParen:
// todo buf == eina_strbuf_new();
case CXCompletionChunk_Placeholder:
case CXCompletionChunk_Comma:
case CXCompletionChunk_CurrentParameter:
if (!buf)
buf = eina_strbuf_new();
eina_strbuf_append(buf, clang_getCString(str_out));
break;
case CXCompletionChunk_RightParen:
eina_strbuf_append(buf, clang_getCString(str_out));
param = eina_strbuf_string_steal(buf);
eina_strbuf_free(buf);
buf = NULL;
break;
default:
break;
}
}
if (name)
suggest_it->summary = strdup(name);
suggest_it->detail = _edi_suggest_c_detail_get(editor, name, ret?ret:"", param?param:"");
if (param)
free(param);
list = eina_list_append(list, suggest_it);
}
clang_disposeCodeCompleteResults(res);
#else
(void) editor; (void) row; (void) col;
#endif
return list;
}
#if HAVE_LIBCLANG
static void
_edi_doc_init(Edi_Language_Document *doc)
{
doc->title = eina_strbuf_new();
doc->detail = eina_strbuf_new();
doc->param = eina_strbuf_new();
doc->ret = eina_strbuf_new();
doc->see = eina_strbuf_new();
}
static Eina_Bool
_edi_doc_newline_check(Eina_Strbuf *strbuf)
{
const char *str;
str = eina_strbuf_string_get(strbuf);
if (strlen(str) < 4)
return EINA_TRUE;
str = str + strlen(str) - 4;
if (!strcmp(str, "<br>"))
return EINA_FALSE;
else
return EINA_TRUE;
}
static void
_edi_doc_trim(Eina_Strbuf *strbuf)
{
const char *str;
int cmp_strlen, ori_strlen;
str = eina_strbuf_string_get(strbuf);
ori_strlen = strlen(str);
if (strlen(str) < 8)
return;
cmp_strlen = strlen(str) - 8;
str += cmp_strlen;
if (!strcmp(str, "<br><br>"))
{
eina_strbuf_remove(strbuf, cmp_strlen, ori_strlen);
_edi_doc_trim(strbuf);
}
else
return;
}
static void
_edi_doc_title_get(CXCursor cursor, Eina_Strbuf *strbuf)
{
CXCompletionString str;
int chunk_num;
str = clang_getCursorCompletionString(cursor);
chunk_num = clang_getNumCompletionChunks(str);
for (int i = 0; i < chunk_num; i++)
{
enum CXCompletionChunkKind kind = clang_getCompletionChunkKind(str, i);
switch (kind)
{
case CXCompletionChunk_ResultType:
eina_strbuf_append_printf(strbuf, "<color=#31d12f><b>%s</b></color><br>",
clang_getCString(clang_getCompletionChunkText(str, i)));
break;
case CXCompletionChunk_Placeholder:
eina_strbuf_append_printf(strbuf, "<color=#edd400><b>%s</b></color>",
clang_getCString(clang_getCompletionChunkText(str, i)));
break;
default:
eina_strbuf_append(strbuf,
clang_getCString(clang_getCompletionChunkText(str, i)));
break;
}
}
}
static void
_edi_doc_dump(Edi_Language_Document *doc, CXComment comment, Eina_Strbuf *strbuf)
{
const char *str ,*tag;
enum CXCommentKind kind = clang_Comment_getKind(comment);
if (kind == CXComment_Null) return;
switch (kind)
{
case CXComment_Text:
str = clang_getCString(clang_TextComment_getText(comment));
if (doc->see == strbuf)
{
eina_strbuf_append_printf(strbuf, " %s", str);
break;
}
if (clang_Comment_isWhitespace(comment))
{
if (_edi_doc_newline_check(strbuf))
{
if (strbuf == doc->detail)
eina_strbuf_append(strbuf, "<br><br>");
else
eina_strbuf_append(strbuf, "<br>");
}
break;
}
eina_strbuf_append(strbuf, str);
break;
case CXComment_InlineCommand:
str = clang_getCString(clang_InlineCommandComment_getCommandName(comment));
if (str[0] == 'p')
eina_strbuf_append_printf(strbuf, "<font_style=italic>%s</font_style>",
clang_getCString(clang_InlineCommandComment_getArgText(comment, 0)));
else if (str[0] == 'c')
eina_strbuf_append_printf(strbuf, "<b>%s</b>",
clang_getCString(clang_InlineCommandComment_getArgText(comment, 0)));
else
eina_strbuf_append_printf(strbuf, "@%s", str);
break;
case CXComment_BlockCommand:
tag = clang_getCString(clang_BlockCommandComment_getCommandName(comment));
if (!strcmp(tag, "return"))
strbuf = doc->ret;
else if (!strcmp(tag, "see"))
strbuf = doc->see;
break;
case CXComment_ParamCommand:
str = clang_getCString(clang_ParamCommandComment_getParamName(comment));
strbuf = doc->param;
eina_strbuf_append_printf(strbuf, "<color=#edd400><b> %s</b></color>",
str);
break;
case CXComment_VerbatimBlockLine:
str = clang_getCString(clang_VerbatimBlockLineComment_getText(comment));
if (str[0] == 10)
{
eina_strbuf_append(strbuf, "<br>");
break;
}
eina_strbuf_append_printf(strbuf, "%s<br>", str);
break;
case CXComment_VerbatimLine:
str = clang_getCString(clang_VerbatimLineComment_getText(comment));
if (doc->see == strbuf)
eina_strbuf_append(strbuf, str);
break;
default:
break;
}
for (unsigned i = 0; i < clang_Comment_getNumChildren(comment); i++)
_edi_doc_dump(doc, clang_Comment_getChild(comment, i), strbuf);
}
static CXCursor
_edi_doc_cursor_get(Edi_Editor *editor, unsigned int row, unsigned int col)
{
CXFile cxfile;
CXSourceLocation location;
CXCursor cursor;
Elm_Code *code;
const char *path;
code = elm_code_widget_code_get(editor->entry);
path = elm_code_file_path_get(code->file);
cxfile = clang_getFile(editor->clang_unit, path);
location = clang_getLocation(editor->clang_unit, cxfile, row, col);
cursor = clang_getCursor(editor->clang_unit, location);
return clang_getCursorReferenced(cursor);
}
#endif
static Edi_Language_Document *
_edi_language_c_lookup_doc(Edi_Editor *editor, unsigned int row, unsigned int col)
{
Edi_Language_Document *doc = NULL;
#if HAVE_LIBCLANG
CXCursor cursor;
CXComment comment;
cursor = _edi_doc_cursor_get(editor, row, col);
comment = clang_Cursor_getParsedComment(cursor);
if (clang_Comment_getKind(comment) == CXComment_Null)
{
return NULL;
}
doc = malloc(sizeof(Edi_Language_Document));
_edi_doc_init(doc);
_edi_doc_dump(doc, comment, doc->detail);
_edi_doc_title_get(cursor, doc->title);
_edi_doc_trim(doc->detail);
#else
(void) editor; (void) row; (void) col;
#endif
return doc;
}
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