summaryrefslogtreecommitdiff
path: root/src/token.h
diff options
context:
space:
mode:
authorJohn Wiegley <johnw@newartisans.com>2008-08-05 13:17:04 -0400
committerJohn Wiegley <johnw@newartisans.com>2008-08-05 18:05:49 -0400
commitf6f4a46cf5b14f9a2170cd6475958efbf320caec (patch)
tree05bc1defcdebc201de3dd10477483d906a842821 /src/token.h
parentb7970b29855563e4c67f85af8b31233eda80c22a (diff)
downloadfork-ledger-f6f4a46cf5b14f9a2170cd6475958efbf320caec.tar.gz
fork-ledger-f6f4a46cf5b14f9a2170cd6475958efbf320caec.tar.bz2
fork-ledger-f6f4a46cf5b14f9a2170cd6475958efbf320caec.zip
Moved around most of the files so that source code is in src/, documentation
is in doc/, etc.
Diffstat (limited to 'src/token.h')
-rw-r--r--src/token.h116
1 files changed, 116 insertions, 0 deletions
diff --git a/src/token.h b/src/token.h
new file mode 100644
index 00000000..04ca39c1
--- /dev/null
+++ b/src/token.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2003-2008, John Wiegley. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of New Artisans LLC nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _TOKEN_H
+#define _TOKEN_H
+
+#include "expr.h"
+
+namespace ledger {
+
+struct expr_t::token_t : public noncopyable
+{
+ enum kind_t {
+ VALUE, // any kind of literal value
+ IDENT, // [A-Za-z_][-A-Za-z0-9_:]*
+ MASK, // /regexp/
+
+ LPAREN, // (
+ RPAREN, // )
+
+ EQUAL, // ==
+ NEQUAL, // !=
+ LESS, // <
+ LESSEQ, // <=
+ GREATER, // >
+ GREATEREQ, // >=
+
+ ASSIGN, // =
+ MATCH, // =~
+ MINUS, // -
+ PLUS, // +
+ STAR, // *
+ KW_DIV, // /
+
+ EXCLAM, // !
+ KW_AND, // &
+ KW_OR, // |
+ KW_MOD, // %
+
+ QUERY, // ?
+ COLON, // :
+
+ COMMA, // ,
+
+ TOK_EOF,
+ UNKNOWN
+
+ } kind;
+
+ char symbol[3];
+ value_t value;
+ std::size_t length;
+
+ explicit token_t() : kind(UNKNOWN), length(0) {
+ TRACE_CTOR(token_t, "");
+ }
+ ~token_t() throw() {
+ TRACE_DTOR(token_t);
+ }
+
+ token_t& operator=(const token_t& other) {
+ if (&other == this)
+ return *this;
+ assert(false);
+ return *this;
+ }
+
+ void clear() {
+ kind = UNKNOWN;
+ length = 0;
+ value = NULL_VALUE;
+
+ symbol[0] = '\0';
+ symbol[1] = '\0';
+ symbol[2] = '\0';
+ }
+
+ void parse_ident(std::istream& in);
+ void next(std::istream& in, const uint_least8_t flags);
+ void rewind(std::istream& in);
+ void unexpected();
+
+ static void expected(char wanted, char c = '\0');
+};
+
+} // namespace ledger
+
+#endif // _TOKEN_H