DeforaOS/C99
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Working some more on the parser

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This commit is contained in:
Pierre Pronchery 2008-03-06 18:13:12 +00:00
parent c197d78957
commit 9f8f3fe02b
1 changed files with 51 additions and 3 deletions
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54
src/parser.c
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@ -66,6 +66,7 @@ static int _block_item_list(C99 * c99);
static int _block_item(C99 * c99);
static int _statement(C99 * c99);
static int _labeled_statement(C99 * c99);
static int _constant_expr(C99 * c99);
static int _expression_statement(C99 * c99);
static int _expression(C99 * c99);
static int _selection_statement(C99 * c99);
@ -501,6 +502,8 @@ static int _parameter_declaration(C99 * c99)
/* abstract-declarator */
static int _abstract_declarator(C99 * c99)
/* pointer
* [ pointer ] direct-abstract-declarator */
{
/* FIXME implement */
#ifdef DEBUG
@ -549,12 +552,14 @@ static int _unary_expr(C99 * c99)
/* assignment-operator */
static int _assignment_operator(C99 * c99)
/* "=" | "*=" | "/=" | "%=" | "+=" | "-=" | "<<=" | ">>=" | "&=" | "^="
* | "|=" */
{
/* FIXME implement */
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return 0;
return c99_scan(c99);
}
@ -647,6 +652,33 @@ static int _statement(C99 * c99)
/* labeled-statement */
static int _labeled_statement(C99 * c99)
/* identifier ":" statement
* case constant-expr ":" statement
* default ":" statement */
{
int ret;
int code;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if((code = token_get_code(c99->token)) == C99_CODE_IDENTIFIER)
ret = _identifier(c99);
else if(code == C99_CODE_KEYWORD_CASE)
{
ret = c99_scan(c99);
ret |= _constant_expr(c99);
}
else /* default */
ret = c99_scan(c99);
ret |= _parse_check(c99, C99_CODE_OPERATOR_COLON);
ret |= _statement(c99);
return ret;
}
/* constant_expr */
static int _constant_expr(C99 * c99)
{
/* FIXME implement */
#ifdef DEBUG
@ -693,12 +725,28 @@ static int _expression(C99 * c99)
/* selection-statement */
static int _selection_statement(C99 * c99)
/* if "(" expression ")" statement [ else statement ]
* switch "(" expression ")" statement */
{
/* FIXME implement */
int ret;
int code;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return 0;
code = token_get_code(c99->token);
ret = c99_scan(c99);
_parse_check(c99, C99_CODE_OPERATOR_LPAREN);
ret |= _expression(c99);
_parse_check(c99, C99_CODE_OPERATOR_RPAREN);
ret |= _statement(c99);
if(code == C99_CODE_KEYWORD_IF
&& token_get_code(c99->token) == C99_CODE_KEYWORD_ELSE)
{
ret |= c99_scan(c99);
ret |= _statement(c99);
}
return ret;
}