Z3 sources

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

lib/scanner.h

@@ -0,0 +1,92 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    scanner.h
+
+Abstract:
+
+    <abstract>
+
+Author:
+
+    Leonardo de Moura (leonardo) 2008-03-31.
+
+Revision History:
+
+--*/
+#ifndef _SCANNER_H_
+#define _SCANNER_H_
+
+#include"ast.h"
+
+class scanner {
+public:
+
+    enum token {
+        LEFT_PAREN = 1,
+        RIGHT_PAREN,
+        COLON,
+        ID_TOKEN,        
+        STRING_TOKEN,
+        COMMENT_TOKEN,
+        INT_TOKEN,
+        BV_TOKEN,
+        FLOAT_TOKEN,
+        EOF_TOKEN,
+        ERROR_TOKEN
+    };    
+
+    scanner(std::istream& stream, std::ostream& err, bool smt2, bool bv_token=false);
+
+    ~scanner() {}    
+    
+    int get_line() const { return m_line; }
+
+    int get_pos() const { return m_pos; }
+
+    symbol const & get_id() const { return m_id; }
+
+    rational get_number() const { return m_number; }
+
+    unsigned get_bv_size() const { return m_bv_size; }
+
+    vector<parameter> const & get_params() const { return m_params; }
+    
+    token scan();
+    
+private:
+    int                m_line;
+    int                m_pos;
+    symbol             m_id;
+    rational           m_number;
+    unsigned           m_bv_size;
+    token              m_state;
+    char               m_normalized[256];
+    vector<char>       m_string;
+    std::istream&      m_stream;
+    std::ostream&      m_err;
+    vector<parameter>  m_params;
+    buffer<char>       m_buffer;
+    unsigned           m_bpos;
+    unsigned           m_bend;
+    char               m_last_char;
+    bool               m_is_interactive;
+    bool               m_smt2;
+    bool               m_bv_token;
+
+    char read_char();
+    token read_symbol(char ch);
+    void unread_char();
+    void comment(char delimiter);
+    token read_id(char first_char);
+    bool read_params();
+    token read_number(char first_char, bool is_pos);
+    token read_string(char delimiter, token result);
+    token read_bv_literal();
+    bool state_ok();
+};
+
+#endif /* _SCANNER_H_ */
+