#include "match.h"
#include "parse.h"
-/* For matching and debugging purposes. Order matters here! The
- unary operators /must/ precede the binary plus and minus, or
- the expression parser breaks. */
-
-static mstring intrinsic_operators[] = {
- minit ("+", INTRINSIC_UPLUS),
- minit ("-", INTRINSIC_UMINUS),
- minit ("+", INTRINSIC_PLUS),
- minit ("-", INTRINSIC_MINUS),
- minit ("**", INTRINSIC_POWER),
- minit ("//", INTRINSIC_CONCAT),
- minit ("*", INTRINSIC_TIMES),
- minit ("/", INTRINSIC_DIVIDE),
- minit (".and.", INTRINSIC_AND),
- minit (".or.", INTRINSIC_OR),
- minit (".eqv.", INTRINSIC_EQV),
- minit (".neqv.", INTRINSIC_NEQV),
- minit (".eq.", INTRINSIC_EQ_OS),
- minit ("==", INTRINSIC_EQ),
- minit (".ne.", INTRINSIC_NE_OS),
- minit ("/=", INTRINSIC_NE),
- minit (".ge.", INTRINSIC_GE_OS),
- minit (">=", INTRINSIC_GE),
- minit (".le.", INTRINSIC_LE_OS),
- minit ("<=", INTRINSIC_LE),
- minit (".lt.", INTRINSIC_LT_OS),
- minit ("<", INTRINSIC_LT),
- minit (".gt.", INTRINSIC_GT_OS),
- minit (">", INTRINSIC_GT),
- minit (".not.", INTRINSIC_NOT),
- minit ("parens", INTRINSIC_PARENTHESES),
- minit (NULL, INTRINSIC_NONE)
-};
/* For debugging and diagnostic purposes. Return the textual representation
of the intrinsic operator OP. */
match
gfc_match_intrinsic_op (gfc_intrinsic_op *result)
{
- gfc_intrinsic_op op;
+ locus orig_loc = gfc_current_locus;
+ int ch;
- op = (gfc_intrinsic_op) gfc_match_strings (intrinsic_operators);
+ gfc_gobble_whitespace ();
+ ch = gfc_next_char ();
+ switch (ch)
+ {
+ case '+':
+ /* Matched "+". */
+ *result = INTRINSIC_PLUS;
+ return MATCH_YES;
- if (op == INTRINSIC_NONE)
- return MATCH_NO;
+ case '-':
+ /* Matched "-". */
+ *result = INTRINSIC_MINUS;
+ return MATCH_YES;
- *result = op;
- return MATCH_YES;
+ case '=':
+ if (gfc_next_char () == '=')
+ {
+ /* Matched "==". */
+ *result = INTRINSIC_EQ;
+ return MATCH_YES;
+ }
+ break;
+
+ case '<':
+ if (gfc_peek_char () == '=')
+ {
+ /* Matched "<=". */
+ gfc_next_char ();
+ *result = INTRINSIC_LE;
+ return MATCH_YES;
+ }
+ /* Matched "<". */
+ *result = INTRINSIC_LT;
+ return MATCH_YES;
+
+ case '>':
+ if (gfc_peek_char () == '=')
+ {
+ /* Matched ">=". */
+ gfc_next_char ();
+ *result = INTRINSIC_GE;
+ return MATCH_YES;
+ }
+ /* Matched ">". */
+ *result = INTRINSIC_GT;
+ return MATCH_YES;
+
+ case '*':
+ if (gfc_peek_char () == '*')
+ {
+ /* Matched "**". */
+ gfc_next_char ();
+ *result = INTRINSIC_POWER;
+ return MATCH_YES;
+ }
+ /* Matched "*". */
+ *result = INTRINSIC_TIMES;
+ return MATCH_YES;
+
+ case '/':
+ ch = gfc_peek_char ();
+ if (ch == '=')
+ {
+ /* Matched "/=". */
+ gfc_next_char ();
+ *result = INTRINSIC_NE;
+ return MATCH_YES;
+ }
+ else if (ch == '/')
+ {
+ /* Matched "//". */
+ gfc_next_char ();
+ *result = INTRINSIC_CONCAT;
+ return MATCH_YES;
+ }
+ /* Matched "/". */
+ *result = INTRINSIC_DIVIDE;
+ return MATCH_YES;
+
+ case '.':
+ ch = gfc_next_char ();
+ switch (ch)
+ {
+ case 'a':
+ if (gfc_next_char () == 'n'
+ && gfc_next_char () == 'd'
+ && gfc_next_char () == '.')
+ {
+ /* Matched ".and.". */
+ *result = INTRINSIC_AND;
+ return MATCH_YES;
+ }
+ break;
+
+ case 'e':
+ if (gfc_next_char () == 'q')
+ {
+ ch = gfc_next_char ();
+ if (ch == '.')
+ {
+ /* Matched ".eq.". */
+ *result = INTRINSIC_EQ_OS;
+ return MATCH_YES;
+ }
+ else if (ch == 'v')
+ {
+ if (gfc_next_char () == '.')
+ {
+ /* Matched ".eqv.". */
+ *result = INTRINSIC_EQV;
+ return MATCH_YES;
+ }
+ }
+ }
+ break;
+
+ case 'g':
+ ch = gfc_next_char ();
+ if (ch == 'e')
+ {
+ if (gfc_next_char () == '.')
+ {
+ /* Matched ".ge.". */
+ *result = INTRINSIC_GE_OS;
+ return MATCH_YES;
+ }
+ }
+ else if (ch == 't')
+ {
+ if (gfc_next_char () == '.')
+ {
+ /* Matched ".gt.". */
+ *result = INTRINSIC_GT_OS;
+ return MATCH_YES;
+ }
+ }
+ break;
+
+ case 'l':
+ ch = gfc_next_char ();
+ if (ch == 'e')
+ {
+ if (gfc_next_char () == '.')
+ {
+ /* Matched ".le.". */
+ *result = INTRINSIC_LE_OS;
+ return MATCH_YES;
+ }
+ }
+ else if (ch == 't')
+ {
+ if (gfc_next_char () == '.')
+ {
+ /* Matched ".lt.". */
+ *result = INTRINSIC_LT_OS;
+ return MATCH_YES;
+ }
+ }
+ break;
+
+ case 'n':
+ ch = gfc_next_char ();
+ if (ch == 'e')
+ {
+ ch = gfc_next_char ();
+ if (ch == '.')
+ {
+ /* Matched ".ne.". */
+ *result = INTRINSIC_NE_OS;
+ return MATCH_YES;
+ }
+ else if (ch == 'q')
+ {
+ if (gfc_next_char () == 'v'
+ && gfc_next_char () == '.')
+ {
+ /* Matched ".neqv.". */
+ *result = INTRINSIC_NEQV;
+ return MATCH_YES;
+ }
+ }
+ }
+ else if (ch == 'o')
+ {
+ if (gfc_next_char () == 't'
+ && gfc_next_char () == '.')
+ {
+ /* Matched ".not.". */
+ *result = INTRINSIC_NOT;
+ return MATCH_YES;
+ }
+ }
+ break;
+
+ case 'o':
+ if (gfc_next_char () == 'r'
+ && gfc_next_char () == '.')
+ {
+ /* Matched ".or.". */
+ *result = INTRINSIC_OR;
+ return MATCH_YES;
+ }
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ gfc_current_locus = orig_loc;
+ return MATCH_NO;
}