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Added % suffix operator, as in "$1.00 * 10%"

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This commit is contained in:
John Wiegley 2009-05-26 23:45:44 -05:00
parent d2062bb54c
commit 0e9f782a05
4 changed files with 22 additions and 4 deletions
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4
src/commodity.cc
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@ -499,14 +499,14 @@ void commodity_t::parse_symbol(std::istream& in, string& symbol)
{
// Invalid commodity characters:
// SPACE, TAB, NEWLINE, RETURN
// 0-9 . , ; - + * / ^ ? : & | ! =
// 0-9 . , ; - + * / ^ ? : & | ! = %
// < > { } [ ] ( ) @
static int invalid_chars[256] = {
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
/* 00 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0,
/* 10 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 20 */ 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1,
/* 20 */ 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1,
/* 30 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* 40 */ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 50 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0,

15
src/parser.cc
View file

@ -44,10 +44,23 @@ expr_t::parser_t::parse_value_term(std::istream& in,
token_t& tok = next_token(in, tflags);
switch (tok.kind) {
case token_t::VALUE:
case token_t::VALUE: {
node = new op_t(op_t::VALUE);
node->set_value(tok.value);
token_t& postfix_tok = next_token(in, tflags.plus_flags(PARSE_OP_CONTEXT));
if (postfix_tok.kind == token_t::PERCENT) {
ptr_op_t prev(node);
node = new op_t(op_t::O_DIV);
node->set_left(prev);
ptr_op_t hundred = new op_t(op_t::VALUE);
hundred->set_value(100L);
node->set_right(hundred);
} else {
push_token(postfix_tok);
}
break;
}
case token_t::IDENT: {
string ident = tok.value.as_string();

5
src/token.cc
View file

@ -278,6 +278,11 @@ void expr_t::token_t::next(std::istream& in, const uint_least8_t pflags)
kind = STAR;
break;
case '%':
in.get(c);
kind = PERCENT;
break;
case '?':
in.get(c);
kind = QUERY;

2
src/token.h
View file

@ -84,9 +84,9 @@ struct expr_t::token_t : public noncopyable
KW_DIV, // div
EXCLAM, // !, not
PERCENT, // %
KW_AND, // &, &&, and
KW_OR, // |, ||, or
KW_MOD, // %
KW_IF, // if
KW_ELSE, // else