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106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
/*++
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Copyright (c) 2006 Microsoft Corporation
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Module Name:
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smt2scanner.h
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Abstract:
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<abstract>
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Author:
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Leonardo de Moura (leonardo) 2011-03-09.
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Revision History:
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--*/
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#ifndef _SMT2SCANNER_H_
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#define _SMT2SCANNER_H_
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#include<iostream>
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#include"symbol.h"
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#include"vector.h"
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#include"rational.h"
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#include"cmd_context.h"
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namespace smt2 {
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typedef cmd_exception scanner_exception;
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class scanner {
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private:
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bool m_interactive;
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int m_spos; // position in the current line of the stream
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char m_curr; // current char;
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int m_line; // line
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int m_pos; // start position of the token
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// data
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symbol m_id;
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rational m_number;
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unsigned m_bv_size;
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// end of data
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char m_normalized[256];
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#define SCANNER_BUFFER_SIZE 1024
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char m_buffer[SCANNER_BUFFER_SIZE];
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unsigned m_bpos;
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unsigned m_bend;
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svector<char> m_string;
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std::istream& m_stream;
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bool m_cache_input;
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svector<char> m_cache;
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svector<char> m_cache_result;
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char curr() const { return m_curr; }
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void new_line() { m_line++; m_spos = 0; }
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void next();
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public:
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enum token {
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NULL_TOKEN = 0,
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LEFT_PAREN = 1,
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RIGHT_PAREN,
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KEYWORD_TOKEN,
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SYMBOL_TOKEN,
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STRING_TOKEN,
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INT_TOKEN,
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BV_TOKEN,
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FLOAT_TOKEN,
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EOF_TOKEN
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};
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scanner(std::istream& stream, bool interactive = false);
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~scanner() {}
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int get_line() const { return m_line; }
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int get_pos() const { return m_pos; }
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symbol const & get_id() const { return m_id; }
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rational get_number() const { return m_number; }
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unsigned get_bv_size() const { return m_bv_size; }
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char const * get_string() const { return m_string.begin(); }
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token scan();
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token read_symbol();
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token read_quoted_symbol();
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void read_comment();
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token read_number();
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token read_string();
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token read_bv_literal();
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void start_caching() { m_cache_input = true; m_cache.reset(); }
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void stop_caching() { m_cache_input = false; }
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unsigned cache_size() const { return m_cache.size(); }
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void reset_cache() { m_cache.reset(); }
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char const * cached_str(unsigned begin, unsigned end);
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};
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};
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#endif /* _SCANNER_H_ */
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