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/* $Id$ */

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#include "../stdafx.h"

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#include "../openttd.h"

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#include "../direction_type.h"

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#include "../rail.h"

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#include "../rail_map.h"

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#include "dbg_helpers.h"

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/** Trackdir & TrackdirBits short names. */

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static const char* trackdir_names[] = {

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	"NE", "SE", "UE", "LE", "LS", "RS", "rne", "rse",

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	"SW", "NW", "UW", "LW", "LN", "RN", "rsw", "rnw",

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};

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/** Return name of given Trackdir. */

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CStrA ValueStr(Trackdir td)

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{

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	CStrA out;

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	out.Format("%d (%s)", td, ItemAtT(td, trackdir_names, "UNK", INVALID_TRACKDIR, "INV"));

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	return out.Transfer();

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}

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/** Return composed name of given TrackdirBits. */

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CStrA ValueStr(TrackdirBits td_bits)

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{

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	CStrA out;

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	out.Format("%d (%s)", td_bits, ComposeNameT(td_bits, trackdir_names, "UNK", INVALID_TRACKDIR_BIT, "INV").Data());

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	return out.Transfer();

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}

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/** DiagDirection short names. */

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static const char* diagdir_names[] = {

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	"NE", "SE", "SW", "NW",

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};

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/** Return name of given DiagDirection. */

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CStrA ValueStr(DiagDirection dd)

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{

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	CStrA out;

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	out.Format("%d (%s)", dd, ItemAtT(dd, diagdir_names, "UNK", INVALID_DIAGDIR, "INV"));

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	return out.Transfer();

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}

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/** SignalType short names. */

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static const char* signal_type_names[] = {

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	"NORMAL", "ENTRY", "EXIT", "COMBO",

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};

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/** Return name of given SignalType. */

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CStrA ValueStr(SignalType t)

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{

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	CStrA out;

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	out.Format("%d (%s)", t, ItemAtT(t, signal_type_names, "UNK"));

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	return out.Transfer();

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}

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/** Translate TileIndex into string. */

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CStrA TileStr(TileIndex tile)

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{

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	CStrA out;

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	out.Format("0x%04X (%d, %d)", tile, TileX(tile), TileY(tile));

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	return out.Transfer();

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}

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/** Keep track of the last assigned type_id. Used for anti-recursion. */

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/*static*/ size_t& DumpTarget::LastTypeId()

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{

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	static size_t last_type_id = 0;

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	return last_type_id;

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}

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/** Return structured name of the current class/structure. */

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CStrA DumpTarget::GetCurrentStructName()

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{

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	CStrA out;

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	if (!m_cur_struct.empty()) {

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		// we are inside some named struct, return its name

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		out = m_cur_struct.top();

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	}

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	return out.Transfer();

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}

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/**

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 * Find the given instance in our anti-recursion repository.

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 * Return true and set name when object was found.

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 */

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bool DumpTarget::FindKnownName(size_t type_id, const void *ptr, CStrA &name)

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{

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	KNOWN_NAMES::const_iterator it = m_known_names.find(KnownStructKey(type_id, ptr));

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	if (it != m_known_names.end()) {

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		/* we have found it */

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		name = (*it).second;

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		return true;

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	}

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	return false;

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}

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/** Write some leading spaces into the output. */

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void DumpTarget::WriteIndent()

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{

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	int num_spaces = 2 * m_indent;

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	memset(m_out.GrowSizeNC(num_spaces), ' ', num_spaces);

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}

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/** Write a line with indent at the beginning and <LF> at the end. */

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void DumpTarget::WriteLine(const char *format, ...)

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{

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	WriteIndent();

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	va_list args;

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	va_start(args, format);

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	m_out.AddFormatL(format, args);

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	va_end(args);

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	m_out.AppendStr("\n");

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}

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/** Write 'name = value' with indent and new-line. */

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void DumpTarget::WriteValue(const char *name, const char *value_str)

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{

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	WriteIndent();

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	m_out.AddFormat("%s = %s\n", name, value_str);

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}

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/** Write name & TileIndex to the output. */

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void DumpTarget::WriteTile(const char *name, TileIndex tile)

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{

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	WriteIndent();

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	m_out.AddFormat("%s = %s\n", name, TileStr(tile).Data());

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}

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/**

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 * Open new structure (one level deeper than the current one) 'name = {<LF>'.

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 */

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void DumpTarget::BeginStruct(size_t type_id, const char *name, const void *ptr)

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{

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	/* make composite name */

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	CStrA cur_name = GetCurrentStructName().Transfer();

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	if (cur_name.Size() > 0) {

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		/* add name delimiter (we use structured names) */

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		cur_name.AppendStr(".");

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	}

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	cur_name.AppendStr(name);

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	/* put the name onto stack (as current struct name) */

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	m_cur_struct.push(cur_name);

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	/* put it also to the map of known structures */

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	m_known_names.insert(KNOWN_NAMES::value_type(KnownStructKey(type_id, ptr), cur_name));

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	WriteIndent();

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	m_out.AddFormat("%s = {\n", name);

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	m_indent++;

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}

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/**

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 * Close structure '}<LF>'.

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 */

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void DumpTarget::EndStruct()

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{

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	m_indent--;

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	WriteIndent();

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	m_out.AddFormat("}\n");

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	/* remove current struct name from the stack */

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	m_cur_struct.pop();

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}

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