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Create a function to build if/else blocks.

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This commit is contained in:
Bill Currie 2011-01-13 14:33:16 +09:00
parent 638f4445cc
commit 258c896e4d
2 changed files with 41 additions and 0 deletions
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1
tools/qfcc/include/expr.h
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@ -601,6 +601,7 @@ expr_t *incop_expr (int op, expr_t *e, int postop);
expr_t *array_expr (expr_t *array, expr_t *index);
expr_t *pointer_expr (expr_t *pointer);
expr_t *address_expr (expr_t *e1, expr_t *e2, struct type_s *t);
expr_t *build_if_statement (expr_t *test, expr_t *s1, expr_t *s2);
expr_t *assign_expr (expr_t *e1, expr_t *e2);
expr_t *cast_expr (struct type_s *t, expr_t *e);

40
tools/qfcc/source/expr.c
View file

@ -2526,6 +2526,46 @@ address_expr (expr_t *e1, expr_t *e2, type_t *t)
return e;
}
expr_t *
build_if_statement (expr_t *test, expr_t *s1, expr_t *s2)
{
int line = pr.source_line;
string_t file = pr.source_file;
expr_t *if_expr;
expr_t *tl = new_label_expr ();
expr_t *fl = new_label_expr ();
pr.source_line = test->line;
pr.source_file = test->file;
if_expr = new_block_expr ();
test = convert_bool (test, 1);
if (test->type != ex_error) {
backpatch (test->e.bool.true_list, tl);
backpatch (test->e.bool.false_list, fl);
append_expr (test->e.bool.e, tl);
append_expr (if_expr, test);
}
append_expr (if_expr, s1);
if (s2) {
expr_t *nl = new_label_expr ();
append_expr (if_expr, new_unary_expr ('g', nl));
append_expr (if_expr, fl);
append_expr (if_expr, s2);
append_expr (if_expr, nl);
} else {
append_expr (if_expr, fl);
}
pr.source_line = line;
pr.source_file = file;
return if_expr;
}
static int
is_indirect (expr_t *e)
{