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eolian: initial lexing of documentation

This commit is contained in:
Daniel Kolesa 2015-06-02 18:12:09 +01:00
parent 732d67c155
commit 0703cc0f5e
3 changed files with 155 additions and 12 deletions
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140
src/lib/eolian/eo_lexer.c
View File

@ -49,7 +49,7 @@ static const char * const tokens[] =
{
"==", "!=", ">=", "<=", "&&", "||", "<<", ">>",
"<comment>", "<string>", "<char>", "<number>", "<value>",
"<comment>", "<doc>", "<string>", "<char>", "<number>", "<value>",
KEYWORDS
};
@ -114,7 +114,7 @@ init_hash(void)
unsigned int i, u;
if (keyword_map) return;
keyword_map = eina_hash_string_superfast_new(NULL);
for (i = u = 13; i < (sizeof(tokens) / sizeof(const char*)); ++i)
for (i = u = 14; i < (sizeof(tokens) / sizeof(const char*)); ++i)
{
eina_hash_add(keyword_map, tokens[i], (void*)(size_t)(i - u + 1));
}
@ -252,6 +252,107 @@ cend:
if (tok) tok->value.s = eina_stringshare_add(eina_strbuf_string_get(ls->buff));
}
static void
read_doc(Eo_Lexer *ls, Eo_Token *tok)
{
Eo_Doc *doc = calloc(1, sizeof(Eo_Doc));
eina_strbuf_reset(ls->buff);
skip_ws(ls);
while (is_newline(ls->current))
next_line_ws(ls);
for (;;)
{
if (!ls->current)
{
free(doc);
eo_lexer_lex_error(ls, "unfinished documentation", -1);
}
if (is_newline(ls->current))
{
while (is_newline(ls->current))
next_line_ws(ls);
break;
}
else
{
if (ls->current == ']')
{
next_char(ls);
if (ls->current != ']')
eina_strbuf_append_char(ls->buff, ']');
else
{
next_char(ls);
eina_strbuf_trim(ls->buff);
doc->summary = eina_stringshare_add(
eina_strbuf_string_get(ls->buff));
tok->value.doc = doc;
return;
}
}
eina_strbuf_append_char(ls->buff, ls->current);
next_char(ls);
}
}
eina_strbuf_trim(ls->buff);
doc->summary = eina_stringshare_add(eina_strbuf_string_get(ls->buff));
Eina_Strbuf *rbuf = eina_strbuf_new();
for (;;)
{
if (!ls->current)
{
eina_stringshare_del(doc->summary);
free(doc);
eina_strbuf_free(rbuf);
eo_lexer_lex_error(ls, "unfinished documentation", -1);
}
eina_strbuf_reset(ls->buff);
while (ls->current && !is_newline(ls->current))
{
if (ls->current == ']')
{
next_char(ls);
if (ls->current != ']')
eina_strbuf_append_char(ls->buff, ']');
else
{
next_char(ls);
eina_strbuf_trim(ls->buff);
eina_strbuf_append(rbuf, eina_strbuf_string_get(ls->buff));
eina_strbuf_trim(rbuf);
if (eina_strbuf_string_get(rbuf)[0])
doc->description = eina_stringshare_add(
eina_strbuf_string_get(rbuf));
eina_strbuf_free(rbuf);
tok->value.doc = doc;
return;
}
}
eina_strbuf_append_char(ls->buff, ls->current);
next_char(ls);
}
eina_strbuf_trim(ls->buff);
eina_strbuf_append(rbuf, eina_strbuf_string_get(ls->buff));
if (is_newline(ls->current))
{
next_line_ws(ls);
/* new paragraph */
if (is_newline(ls->current))
eina_strbuf_append(rbuf, "\n\n");
else
eina_strbuf_append_char(rbuf, ' ');
while (is_newline(ls->current))
next_line_ws(ls);
}
}
}
static void
esc_error(Eo_Lexer *ls, int *c, int n, const char *msg)
{
@ -549,6 +650,12 @@ lex(Eo_Lexer *ls, Eo_Token *tok)
}
continue;
}
case '[':
next_char(ls);
if (ls->current != '[') return '[';
next_char(ls);
read_doc(ls, tok);
return TOK_DOC;
case '\0':
return -1;
case '=':
@ -748,6 +855,25 @@ _temps_free(Eo_Lexer_Temps *tmp)
if (s) eina_stringshare_del(s);
}
static void
_free_tok(Eo_Token *tok)
{
if (tok->token < START_CUSTOM || tok->token == TOK_NUMBER ||
tok->token == TOK_CHAR)
return;
if (tok->token == TOK_DOC)
{
/* free doc */
eina_stringshare_del(tok->value.doc->summary);
eina_stringshare_del(tok->value.doc->description);
free(tok->value.doc);
tok->value.doc = NULL;
return;
}
eina_stringshare_del(tok->value.s);
tok->value.s = NULL;
}
void
eo_lexer_free(Eo_Lexer *ls)
{
@ -757,6 +883,7 @@ eo_lexer_free(Eo_Lexer *ls)
if (ls->buff ) eina_strbuf_free (ls->buff);
if (ls->handle ) eina_file_close (ls->handle);
_free_tok(&ls->t);
eo_lexer_context_clear(ls);
_temps_free(&ls->tmp);
free(ls);
@ -778,12 +905,7 @@ eo_lexer_new(const char *source)
int
eo_lexer_get(Eo_Lexer *ls)
{
if (ls->t.token >= START_CUSTOM && ls->t.token != TOK_NUMBER
&& ls->t.token != TOK_CHAR)
{
eina_stringshare_del(ls->t.value.s);
ls->t.value.s = NULL;
}
_free_tok(&ls->t);
if (ls->lookahead.token >= 0)
{
ls->t = ls->lookahead;
@ -850,7 +972,7 @@ eo_lexer_token_to_str(int token, char *buf)
const char *
eo_lexer_keyword_str_get(int kw)
{
return tokens[kw + 12];
return tokens[kw + 13];
}
Eina_Bool

25
src/lib/eolian/eo_lexer.h
View File

@ -17,7 +17,7 @@ enum Tokens
TOK_EQ = START_CUSTOM, TOK_NQ, TOK_GE, TOK_LE,
TOK_AND, TOK_OR, TOK_LSH, TOK_RSH,
TOK_COMMENT, TOK_STRING, TOK_CHAR, TOK_NUMBER, TOK_VALUE
TOK_COMMENT, TOK_DOC, TOK_STRING, TOK_CHAR, TOK_NUMBER, TOK_VALUE
};
/* all keywords in eolian, they can still be used as names (they're TOK_VALUE)
@ -81,13 +81,34 @@ enum Numbers
NUM_DOUBLE
};
typedef struct _Eo_Doc
{
Eina_Stringshare *summary;
Eina_Stringshare *description;
} Eo_Doc;
typedef union
{
char c;
const char *s;
signed int i;
unsigned int u;
signed long l;
unsigned long ul;
signed long long ll;
unsigned long long ull;
float f;
double d;
Eo_Doc *doc;
} Eo_Token_Union;
/* a token - "token" is the actual token id, "value" is the value of a token
* if needed - NULL otherwise - for example the value of a TOK_VALUE, "kw"
* is the keyword id if this is a keyword, it's 0 when not a keyword */
typedef struct _Eo_Token
{
int token, kw;
Eolian_Value_Union value;
Eo_Token_Union value;
} Eo_Token;
typedef struct _Lexer_Ctx

2
src/lib/eolian/eo_parser.c
View File

@ -326,7 +326,7 @@ parse_expr_simple(Eo_Lexer *ls)
expr = push_expr(ls);
FILL_BASE(expr->base, ls, line, col);
expr->type = ls->t.kw + 1; /* map Numbers from lexer to expr type */
expr->value = ls->t.value;
memcpy(&expr->value, &ls->t.value, sizeof(expr->value));
eo_lexer_get(ls);
break;
}