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Interval expressions for match statements

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Ginger Bill
2017-04-21 00:13:20 +01:00
parent a713e33007
commit 9a1566d665
4 changed files with 149 additions and 54 deletions
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src/parser.c
+19 -1
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@@ -3088,7 +3088,25 @@ AstNode *parse_case_clause(AstFile *f) {
Token token = f->curr_token;
AstNodeArray list = make_ast_node_array(f);
if (allow_token(f, Token_case)) {
list = parse_rhs_expr_list(f);
list = make_ast_node_array(f);
for (;;) {
AstNode *e = parse_expr(f, false);
if (f->curr_token.kind == Token_Ellipsis ||
f->curr_token.kind == Token_HalfClosed) {
Token op = f->curr_token;
next_token(f);
AstNode *lhs = e;
AstNode *rhs = parse_expr(f, false);
e = ast_interval_expr(f, op, lhs, rhs);
}
array_add(&list, e);
if (f->curr_token.kind != Token_Comma ||
f->curr_token.kind == Token_EOF) {
break;
}
next_token(f);
}
} else {
expect_token(f, Token_default);
}