55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/////////////////////////////////////////////////////////
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//
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// Pretty-print routine.
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//
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// The pretty-printer can be called from C++ or Lua.
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//
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/////////////////////////////////////////////////////////
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#ifndef PRINT_HPP
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#define PRINT_HPP
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#include "luastack.hpp"
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// This file provides these functions for lua.
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//
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// They direct all output to std::cout
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//
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extern "C" {
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void luai_writestring(const char *s, size_t len);
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void luai_writeline();
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}
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// Output a simple value to a stream.
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//
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// If the value is a string, number, boolean, or nil, it is
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// quoted and output to the stream, and this function returns
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// true. Otherwise, this function returns false and nothing
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// is sent to the stream.
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//
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bool string_quote(LuaStack &LS, LuaSlot val, std::ostream *os);
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// Pretty print to a stream.
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//
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// If indent is >=0, the output is indented. If indent<0, then
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// the output is emitted without newlines or indentation.
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//
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// Maxlen specifies the maximum number of characters output. If
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// this is exceeded, then the printout is truncated.
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//
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void pprint(LuaStack &LS, LuaSlot val, bool indent, std::ostream *os);
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// The following lua interfaces to this code are included:
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//
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// pprint(expr, expr, expr...)
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//
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// - pretty print the specified expression to stdout.
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//
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// string.pprint(expr, indent)
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//
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// - pretty print the specified expression, return the result as a string.
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//
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int lfn_pprint_pprint(lua_State *L);
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int lfn_string_pprint(lua_State *L);
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#endif // PRINT_HPP
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