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parse.c
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parse.c
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//**************************************************************************
//**
//** parse.c
//**
//**************************************************************************
// HEADER FILES ------------------------------------------------------------
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <assert.h>
#include "common.h"
#include "parse.h"
#include "symbol.h"
#include "pcode.h"
#include "token.h"
#include "error.h"
#include "misc.h"
#include "strlist.h"
// MACROS ------------------------------------------------------------------
#define MAX_STATEMENT_DEPTH 128
#define MAX_BREAK 128
#define MAX_CONTINUE 128
#define MAX_CASE 128
#define EXPR_STACK_DEPTH 64
// TYPES -------------------------------------------------------------------
typedef enum
{
STMT_SCRIPT,
STMT_IF,
STMT_ELSE,
STMT_DO,
STMT_WHILEUNTIL,
STMT_SWITCH,
STMT_FOR
} statement_t;
typedef struct
{
int level;
int addressPtr;
} breakInfo_t;
typedef struct
{
int level;
int addressPtr;
} continueInfo_t;
typedef struct
{
int level;
int value;
boolean isDefault;
int address;
} caseInfo_t;
typedef struct prefunc_s
{
struct prefunc_s *next;
symbolNode_t *sym;
int address;
int argcount;
int line;
char *source;
} prefunc_t;
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
static void CountScript(int type);
static void Outside(void);
static void OuterScript(void);
static void OuterFunction(void);
static void OuterMapVar(boolean local);
static void OuterWorldVar(boolean isGlobal);
static void OuterSpecialDef(void);
static void OuterDefine(boolean force);
static void OuterInclude(void);
static void OuterImport(void);
static boolean ProcessStatement(statement_t owner);
static void LeadingCompoundStatement(statement_t owner);
static void LeadingVarDeclare(void);
static void LeadingLineSpecial(boolean executewait);
static void LeadingFunction(boolean executewait);
static void LeadingIdentifier(void);
static void BuildPrintString(void);
static void ActionOnCharRange(boolean write);
static void LeadingStrcpy(void);
static void LeadingPrint(void);
static void LeadingHudMessage(void);
static void LeadingVarAssign(symbolNode_t *sym);
static pcd_t GetAssignPCD(tokenType_t token, symbolType_t symbol);
static void LeadingInternFunc(symbolNode_t *sym);
static void LeadingScriptFunc(symbolNode_t *sym);
static void LeadingSuspend(void);
static void LeadingTerminate(void);
static void LeadingRestart(void);
static void LeadingReturn(void);
static void LeadingIf(void);
static void LeadingFor(void);
static void LeadingWhileUntil(void);
static void LeadingDo(void);
static void LeadingSwitch(void);
static void LeadingCase(void);
static void LeadingDefault(void);
static void LeadingBreak(void);
static void LeadingContinue(void);
static void LeadingCreateTranslation(void);
static void LeadingIncDec(int token);
static void PushCase(int value, boolean isDefault);
static caseInfo_t *GetCaseInfo(void);
static int CaseInfoCmp(const void *a, const void *b);
static boolean DefaultInCurrent(void);
static void PushBreak(void);
static void WriteBreaks(void);
static boolean BreakAncestor(void);
static void PushContinue(void);
static void WriteContinues(int address);
static boolean ContinueAncestor(void);
static void ProcessInternFunc(symbolNode_t *sym);
static void ProcessScriptFunc(symbolNode_t *sym, boolean discardReturn);
static void EvalExpression(void);
static void ExprLevX(int level);
static void ExprLevA(void);
static void ExprFactor(void);
static void ConstExprFactor(void);
static void SendExprCommand(pcd_t pcd);
static void PushExStk(int value);
static int PopExStk(void);
static pcd_t TokenToPCD(tokenType_t token);
static pcd_t GetPushVarPCD(symbolType_t symType);
static pcd_t GetIncDecPCD(tokenType_t token, symbolType_t symbol);
static int EvalConstExpression(void);
static void ParseArrayDims(int *size, int *ndim, int dims[MAX_ARRAY_DIMS]);
static void SymToArray(int symtype, symbolNode_t *sym, int index, int ndim, int size, int dims[MAX_ARRAY_DIMS]);
static void ParseArrayIndices(symbolNode_t *sym, int requiredIndices);
static void InitializeArray(symbolNode_t *sym, int dims[MAX_ARRAY_DIMS], int size);
static void InitializeScriptArray(symbolNode_t *sym, int dims[MAX_ARRAY_DIMS]);
static symbolNode_t *DemandSymbol(char *name);
static symbolNode_t *SpeculateSymbol(char *name, boolean hasReturn);
static symbolNode_t *SpeculateFunction(const char *name, boolean hasReturn);
static void UnspeculateFunction(symbolNode_t *sym);
static void AddScriptFuncRef(symbolNode_t *sym, int address, int argcount);
static void CheckForUndefinedFunctions(void);
static void SkipBraceBlock(int depth);
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
// PUBLIC DATA DEFINITIONS -------------------------------------------------
int pa_ScriptCount;
struct ScriptTypes *pa_TypedScriptCounts;
int pa_MapVarCount;
int pa_WorldVarCount;
int pa_GlobalVarCount;
int pa_WorldArrayCount;
int pa_GlobalArrayCount;
enum ImportModes ImportMode = IMPORT_None;
boolean ExporterFlagged;
boolean pa_ConstExprIsString;
// PRIVATE DATA DEFINITIONS ------------------------------------------------
static int ScriptVarCount;
static int ScriptArrayCount;
static int ScriptArraySize[MAX_SCRIPT_ARRAYS];
static statement_t StatementHistory[MAX_STATEMENT_DEPTH];
static int StatementIndex;
static breakInfo_t BreakInfo[MAX_BREAK];
static int BreakIndex;
static continueInfo_t ContinueInfo[MAX_CONTINUE];
static int ContinueIndex;
static caseInfo_t CaseInfo[MAX_CASE];
static int CaseIndex;
static int StatementLevel;
static int ExprStack[EXPR_STACK_DEPTH];
static int ExprStackIndex;
static boolean ConstantExpression;
static symbolNode_t *InsideFunction;
static prefunc_t *FillinFunctions;
static prefunc_t **FillinFunctionsLatest = &FillinFunctions;
static boolean ArrayHasStrings;
static int AdjustStmtLevel[] =
{
0, // STMT_SCRIPT
0, // STMT_IF
0, // STMT_ELSE
1, // STMT_DO
1, // STMT_WHILEUNTIL
1, // STMT_SWITCH
1 // STMT_FOR
};
static boolean IsBreakRoot[] =
{
NO, // STMT_SCRIPT
NO, // STMT_IF
NO, // STMT_ELSE
YES, // STMT_DO
YES, // STMT_WHILEUNTIL
YES, // STMT_SWITCH
YES // STMT_FOR
};
static boolean IsContinueRoot[] =
{
NO, // STMT_SCRIPT
NO, // STMT_IF
NO, // STMT_ELSE
YES, // STMT_DO
YES, // STMT_WHILEUNTIL
NO, // STMT_SWITCH
YES // STMT_FOR
};
static tokenType_t LevAOps[] =
{
TK_ORLOGICAL,
TK_NONE
};
static tokenType_t LevBOps[] =
{
TK_ANDLOGICAL,
TK_NONE
};
static tokenType_t LevCOps[] =
{
TK_ORBITWISE,
TK_NONE
};
static tokenType_t LevDOps[] =
{
TK_EORBITWISE,
TK_NONE
};
static tokenType_t LevEOps[] =
{
TK_ANDBITWISE,
TK_NONE
};
static tokenType_t LevFOps[] =
{
TK_EQ,
TK_NE,
TK_NONE
};
static tokenType_t LevGOps[] =
{
TK_LT,
TK_LE,
TK_GT,
TK_GE,
TK_NONE
};
static tokenType_t LevHOps[] =
{
TK_LSHIFT,
TK_RSHIFT,
TK_NONE
};
static tokenType_t LevIOps[] =
{
TK_PLUS,
TK_MINUS,
TK_NONE
};
static tokenType_t LevJOps[] =
{
TK_ASTERISK,
TK_SLASH,
TK_PERCENT,
TK_NONE
};
static tokenType_t *OpsList[] =
{
LevAOps,
LevBOps,
LevCOps,
LevDOps,
LevEOps,
LevFOps,
LevGOps,
LevHOps,
LevIOps,
LevJOps,
NULL
};
static tokenType_t AssignOps[] =
{
TK_ASSIGN,
TK_ADDASSIGN,
TK_SUBASSIGN,
TK_MULASSIGN,
TK_DIVASSIGN,
TK_MODASSIGN,
TK_ANDASSIGN,
TK_EORASSIGN,
TK_ORASSIGN,
TK_LSASSIGN,
TK_RSASSIGN,
TK_NONE
};
static struct ScriptTypes ScriptCounts[] =
{
{ "closed", 0, 0 },
{ "open", OPEN_SCRIPTS_BASE, 0 },
{ "respawn", RESPAWN_SCRIPTS_BASE, 0 },
{ "death", DEATH_SCRIPTS_BASE, 0 },
{ "enter", ENTER_SCRIPTS_BASE, 0 },
{ "pickup", PICKUP_SCRIPTS_BASE, 0 },
{ "bluereturn", BLUE_RETURN_SCRIPTS_BASE, 0 },
{ "redreturn", RED_RETURN_SCRIPTS_BASE, 0 },
{ "whitereturn", WHITE_RETURN_SCRIPTS_BASE, 0 },
{ "lightning", LIGHTNING_SCRIPTS_BASE, 0 },
{ "disconnect", DISCONNECT_SCRIPTS_BASE, 0 },
{ "unloading", UNLOADING_SCRIPTS_BASE, 0 },
{ "return", RETURN_SCRIPTS_BASE, 0 },
{ "event", EVENT_SCRIPTS_BASE, 0 },
{ NULL, -1, 0 }
};
// CODE --------------------------------------------------------------------
//==========================================================================
//
// PA_Parse
//
//==========================================================================
void PA_Parse(void)
{
int i;
pa_ScriptCount = 0;
pa_TypedScriptCounts = ScriptCounts;
for (i = 0; ScriptCounts[i].TypeName != NULL; i++)
{
ScriptCounts[i].TypeCount = 0;
}
pa_MapVarCount = 0;
pa_WorldVarCount = 0;
pa_GlobalVarCount = 0;
pa_WorldArrayCount = 0;
pa_GlobalArrayCount = 0;
TK_NextToken();
Outside();
CheckForUndefinedFunctions();
ERR_Finish();
}
//==========================================================================
//
// CountScript
//
//==========================================================================
static void CountScript(int type)
{
int i;
for (i = 0; ScriptCounts[i].TypeName != NULL; i++)
{
if (ScriptCounts[i].TypeBase == type)
{
if (type != 0)
{
MS_Message(MSG_DEBUG, "Script type: %s\n",
ScriptCounts[i].TypeName);
}
ScriptCounts[i].TypeCount++;
return;
}
}
return;
}
//==========================================================================
//
// Outside
//
//==========================================================================
static void Outside(void)
{
boolean done;
int outertokencount;
done = NO;
outertokencount = 0;
while(done == NO)
{
outertokencount++;
switch(tk_Token)
{
case TK_EOF:
done = YES;
break;
case TK_SCRIPT:
OuterScript();
break;
case TK_FUNCTION:
OuterFunction();
break;
case TK_INT:
case TK_STR:
case TK_BOOL:
OuterMapVar(NO);
break;
case TK_WORLD:
OuterWorldVar(NO);
break;
case TK_GLOBAL:
OuterWorldVar(YES);
break;
case TK_SPECIAL:
OuterSpecialDef();
break;
case TK_NUMBERSIGN:
TK_NextToken();
switch(tk_Token)
{
case TK_DEFINE:
OuterDefine(NO);
break;
case TK_LIBDEFINE:
OuterDefine(YES);
break;
case TK_INCLUDE:
OuterInclude();
break;
case TK_NOCOMPACT:
if(ImportMode != IMPORT_Importing)
{
if(pc_Address != 8)
{
ERR_Error(ERR_NOCOMPACT_NOT_HERE, YES);
}
MS_Message(MSG_DEBUG, "Forcing NoShrink\n");
pc_NoShrink = TRUE;
}
TK_NextToken();
break;
case TK_WADAUTHOR:
if(ImportMode != IMPORT_Importing)
{
MS_Message(MSG_DEBUG, "Will write WadAuthor-compatible object\n");
MS_Message(MSG_NORMAL, "You don't need to use #wadauthor anymore.\n");
pc_WadAuthor = TRUE;
}
TK_NextToken();
break;
case TK_NOWADAUTHOR:
if(ImportMode != IMPORT_Importing)
{
MS_Message(MSG_DEBUG, "Will write WadAuthor-incompatible object\n");
pc_WadAuthor = FALSE;
}
TK_NextToken();
break;
case TK_ENCRYPTSTRINGS:
if(ImportMode != IMPORT_Importing)
{
MS_Message(MSG_DEBUG, "Strings will be encrypted\n");
pc_EncryptStrings = TRUE;
if(pc_EnforceHexen)
{
ERR_Error(ERR_HEXEN_COMPAT, YES);
}
}
TK_NextToken();
break;
case TK_IMPORT:
OuterImport();
outertokencount = 0;
break;
case TK_LIBRARY:
if (outertokencount != 1)
{
ERR_Error(ERR_LIBRARY_NOT_FIRST, YES);
}
TK_NextTokenMustBe(TK_STRING, ERR_STRING_LIT_NOT_FOUND);
if(ImportMode == IMPORT_None)
{
MS_Message(MSG_DEBUG, "Allocations modified for exporting\n");
ImportMode = IMPORT_Exporting;
if(pc_EnforceHexen)
{
ERR_Error(ERR_HEXEN_COMPAT, YES);
}
}
else if(ImportMode == IMPORT_Importing)
{
PC_AddImport(tk_String);
ExporterFlagged = YES;
}
TK_NextToken();
break;
case TK_REGION: // [mxd]
case TK_ENDREGION:
TK_SkipLine();
break;
default:
ERR_Error(ERR_INVALID_DIRECTIVE, YES);
TK_SkipLine();
break;
}
break;
default:
ERR_Exit(ERR_INVALID_DECLARATOR, YES, NULL);
break;
}
}
}
//==========================================================================
//
// OuterScript
//
//==========================================================================
static void OuterScript(void)
{
int scriptNumber;
symbolNode_t *sym;
int scriptType, scriptFlags;
MS_Message(MSG_DEBUG, "---- OuterScript ----\n");
BreakIndex = 0;
CaseIndex = 0;
StatementLevel = 0;
ScriptVarCount = 0;
ScriptArrayCount = 0;
SY_FreeLocals();
TK_NextToken();
if(ImportMode == IMPORT_Importing)
{
// When importing, the script number is not recorded, because
// it might be a #define that is not included by the main .acs
// file, so processing it would generate a syntax error.
SkipBraceBlock(0);
TK_NextToken();
return;
}
// [RH] If you want to use script 0, it must be written as <<0>>.
// This is to avoid using it accidentally, since ZDoom uses script
// 0 to implement many of the Strife-specific line specials.
if(tk_Token == TK_LSHIFT)
{
TK_NextTokenMustBe(TK_NUMBER, ERR_SCRIPT_OUT_OF_RANGE);
if(tk_Number != 0)
{
ERR_Exit(ERR_SCRIPT_OUT_OF_RANGE, YES, NULL);
}
TK_NextTokenMustBe(TK_RSHIFT, ERR_SCRIPT_OUT_OF_RANGE);
TK_NextToken();
scriptNumber = 0;
}
else if(tk_Token == TK_STRING)
{ // Named scripts start counting at -1 and go down from there.
if(strcasecmp("None", tk_String) == 0)
{
ERR_Error(ERR_SCRIPT_NAMED_NONE, YES, NULL);
}
scriptNumber = -1 - STR_FindInListInsensitive(STRLIST_NAMEDSCRIPTS, tk_String);
TK_NextToken();
}
else
{
scriptNumber = EvalConstExpression();
if(scriptNumber < 1 || scriptNumber > 32767)
{
TK_Undo();
ERR_Error(ERR_SCRIPT_OUT_OF_RANGE, YES, NULL);
SkipBraceBlock(0);
TK_NextToken();
return;
}
}
if (scriptNumber >= 0)
{
MS_Message(MSG_DEBUG, "Script number: %d\n", scriptNumber);
}
else
{
MS_Message(MSG_DEBUG, "Script name: %s (%d)\n",
STR_GetString(STRLIST_NAMEDSCRIPTS, -scriptNumber - 1),
scriptNumber);
}
scriptType = 0;
scriptFlags = 0;
if(tk_Token == TK_LPAREN)
{
if(TK_NextToken() == TK_VOID)
{
TK_NextTokenMustBe(TK_RPAREN, ERR_MISSING_RPAREN);
}
else
{
TK_Undo();
do
{
TK_NextTokenMustBe(TK_INT, ERR_BAD_VAR_TYPE);
TK_NextTokenMustBe(TK_IDENTIFIER, ERR_INVALID_IDENTIFIER);
if(ScriptVarCount == 4)
{
ERR_Error(ERR_TOO_MANY_SCRIPT_ARGS, YES);
}
if(SY_FindLocal(tk_String) != NULL)
{ // Redefined
ERR_Error(ERR_REDEFINED_IDENTIFIER, YES, tk_String);
}
else if(ScriptVarCount < 4)
{
sym = SY_InsertLocal(tk_String, SY_SCRIPTVAR);
sym->info.var.index = ScriptVarCount;
ScriptVarCount++;
}
TK_NextToken();
} while(tk_Token == TK_COMMA);
TK_TokenMustBe(TK_RPAREN, ERR_MISSING_RPAREN);
}
TK_NextToken();
switch(tk_Token)
{
case TK_DISCONNECT:
scriptType = DISCONNECT_SCRIPTS_BASE;
if(ScriptVarCount != 1)
{
ERR_Error(ERR_DISCONNECT_NEEDS_1_ARG, YES);
}
break;
case TK_OPEN:
case TK_RESPAWN:
case TK_DEATH:
case TK_ENTER:
case TK_PICKUP:
case TK_BLUERETURN:
case TK_REDRETURN:
case TK_WHITERETURN:
case TK_LIGHTNING:
case TK_UNLOADING:
case TK_RETURN:
ERR_Error(ERR_UNCLOSED_WITH_ARGS, YES);
break;
case TK_EVENT:
scriptType = EVENT_SCRIPTS_BASE;
if(ScriptVarCount != 3)
{
ERR_Error(ERR_EVENT_NEEDS_3_ARG, YES);
}
break;
default:
TK_Undo();
}
MS_Message(MSG_DEBUG, "Script type: %s (%d %s)\n",
scriptType == 0 ? "closed" : "disconnect",
ScriptVarCount, ScriptVarCount == 1 ? "arg" : "args");
}
else switch (tk_Token)
{
case TK_OPEN:
scriptType = OPEN_SCRIPTS_BASE;
break;
case TK_RESPAWN: // [BC]
scriptType = RESPAWN_SCRIPTS_BASE;
break;
case TK_DEATH: // [BC]
scriptType = DEATH_SCRIPTS_BASE;
break;
case TK_ENTER: // [BC]
scriptType = ENTER_SCRIPTS_BASE;
break;
case TK_RETURN:
scriptType = RETURN_SCRIPTS_BASE;
break;
case TK_PICKUP: // [BC]
scriptType = PICKUP_SCRIPTS_BASE;
break;
case TK_BLUERETURN: // [BC]
scriptType = BLUE_RETURN_SCRIPTS_BASE;
break;
case TK_REDRETURN: // [BC]
scriptType = RED_RETURN_SCRIPTS_BASE;
break;
case TK_WHITERETURN: // [BC]
scriptType = WHITE_RETURN_SCRIPTS_BASE;
break;
case TK_LIGHTNING:
scriptType = LIGHTNING_SCRIPTS_BASE;
break;
case TK_UNLOADING:
scriptType = UNLOADING_SCRIPTS_BASE;
break;
case TK_DISCONNECT:
scriptType = DISCONNECT_SCRIPTS_BASE;
ERR_Error (ERR_DISCONNECT_NEEDS_1_ARG, YES);
break;
case TK_EVENT: // [BB]
scriptType = EVENT_SCRIPTS_BASE;
ERR_Error (ERR_EVENT_NEEDS_3_ARG, YES);
break;
default:
ERR_Error(ERR_BAD_SCRIPT_DECL, YES);
SkipBraceBlock(0);
TK_NextToken();
return;
}
TK_NextToken();
if(tk_Token == TK_NET)
{
scriptFlags |= NET_SCRIPT_FLAG;
TK_NextToken();
}
// [BB] If NET and CLIENTSIDE are specified, this construction can only parse
// "NET CLIENTSIDE" but not "CLIENTSIDE NET".
if(tk_Token == TK_CLIENTSIDE)
{
scriptFlags |= CLIENTSIDE_SCRIPT_FLAG;
TK_NextToken();
}
CountScript(scriptType);
PC_AddScript(scriptNumber, scriptType, scriptFlags, ScriptVarCount);
pc_LastAppendedCommand = PCD_NOP;
if(ProcessStatement(STMT_SCRIPT) == NO)
{
ERR_Error(ERR_INVALID_STATEMENT, YES);
}
if(pc_LastAppendedCommand != PCD_TERMINATE)
{
PC_AppendCmd(PCD_TERMINATE);
}
PC_SetScriptVarCount(scriptNumber, scriptType, ScriptVarCount, ScriptArrayCount, ScriptArraySize);
pa_ScriptCount++;
}
//==========================================================================
//
// OuterFunction
//
//==========================================================================
static void OuterFunction(void)
{
enum ImportModes importing;
boolean hasReturn;
symbolNode_t *sym;
int defLine;
MS_Message(MSG_DEBUG, "---- OuterFunction ----\n");
importing = ImportMode;
BreakIndex = 0;
CaseIndex = 0;
StatementLevel = 0;
ScriptVarCount = 0;
ScriptArrayCount = 0;
SY_FreeLocals();
TK_NextToken();
if(tk_Token != TK_STR && tk_Token != TK_INT &&
tk_Token != TK_VOID && tk_Token != TK_BOOL)
{
ERR_Error(ERR_BAD_RETURN_TYPE, YES);
tk_Token = TK_VOID;
}
hasReturn = tk_Token != TK_VOID;
TK_NextTokenMustBe(TK_IDENTIFIER, ERR_INVALID_IDENTIFIER);
sym = SY_FindGlobal(tk_String);
if(sym != NULL)
{
if(sym->type != SY_SCRIPTFUNC)
{ // Redefined
ERR_Error(ERR_REDEFINED_IDENTIFIER, YES, tk_String);
SkipBraceBlock(0);
TK_NextToken();
return;
}
if(!sym->info.scriptFunc.predefined)
{
ERR_Error(ERR_FUNCTION_ALREADY_DEFINED, YES);
ERR_ErrorAt(sym->info.scriptFunc.sourceName, sym->info.scriptFunc.sourceLine);
ERR_Error(ERR_NONE, YES, "Previous definition was here.");
SkipBraceBlock(0);
TK_NextToken();
return;
}
if(sym->info.scriptFunc.hasReturnValue && !hasReturn)
{
ERR_Error(ERR_PREVIOUS_NOT_VOID, YES);
ERR_ErrorAt(sym->info.scriptFunc.sourceName, sym->info.scriptFunc.sourceLine);
ERR_Error(ERR_NONE, YES, "Previous use was here.");
}
}
else
{
sym = SY_InsertGlobal(tk_String, SY_SCRIPTFUNC);
if (importing == IMPORT_Importing)
{
sym->info.scriptFunc.address = 0;
sym->info.scriptFunc.predefined = NO;
}
else
{
sym->info.scriptFunc.address = pc_Address;
sym->info.scriptFunc.predefined = YES;
// only for consistency with other speculated functions and pretty logs
sym->info.scriptFunc.funcNumber = 0;
}
}
defLine = tk_Line;
TK_NextTokenMustBe(TK_LPAREN, ERR_MISSING_LPAREN);
if(TK_NextToken() == TK_VOID)
{
TK_NextTokenMustBe(TK_RPAREN, ERR_MISSING_RPAREN);
}
else
{
TK_Undo();
do
{
symbolType_t type;
symbolNode_t *local;
TK_NextToken();
/* if(tk_Token != TK_INT && tk_Token != TK_STR && tk_Token != TK_BOOL)
{
ERR_Error(ERR_BAD_VAR_TYPE, YES);
tk_Token = TK_INT;
}
*/ if(tk_Token == TK_INT || tk_Token == TK_BOOL)
{
if(TK_NextToken() == TK_LBRACKET)
{
TK_NextTokenMustBe(TK_RBRACKET, ERR_BAD_VAR_TYPE);
type = SY_SCRIPTALIAS;
}
else
{
TK_Undo();
type = SY_SCRIPTVAR;
}
}
else if(tk_Token == TK_STR)
{
type = SY_SCRIPTVAR;
}
else
{
type = SY_SCRIPTVAR;
ERR_Error(ERR_BAD_VAR_TYPE, YES);
tk_Token = TK_INT;
}
TK_NextTokenMustBe(TK_IDENTIFIER, ERR_INVALID_IDENTIFIER);
if(SY_FindLocal(tk_String) != NULL)
{ // Redefined
ERR_Error(ERR_REDEFINED_IDENTIFIER, YES, tk_String);
}
else
{
local = SY_InsertLocal(tk_String, type);
local->info.var.index = ScriptVarCount;
ScriptVarCount++;
}
TK_NextToken();
} while(tk_Token == TK_COMMA);
TK_TokenMustBe(TK_RPAREN, ERR_MISSING_RPAREN);
}
if(pc_EnforceHexen)
{
ERR_Error(ERR_HEXEN_COMPAT, YES);
}
sym->info.scriptFunc.sourceLine = defLine;
sym->info.scriptFunc.sourceName = tk_SourceName;
sym->info.scriptFunc.argCount = ScriptVarCount;
sym->info.scriptFunc.address = (importing == IMPORT_Importing) ? 0 : pc_Address;
sym->info.scriptFunc.hasReturnValue = hasReturn;
if(importing == IMPORT_Importing)
{
SkipBraceBlock(0);
TK_NextToken();
sym->info.scriptFunc.predefined = NO;
sym->info.scriptFunc.varCount = ScriptVarCount;
return;
}
TK_NextToken();
InsideFunction = sym;
pc_LastAppendedCommand = PCD_NOP;
// If we just call ProcessStatement(STMT_SCRIPT), and this function
// needs to return a value but the last pcode output was not a return,
// then the line number given in the error can be confusing because it
// is beyond the end of the function. To avoid this, we process the
// compound statement ourself and check if it returned something
// before checking for the '}'. If a return is required, then the error
// line will be shown as the one that contains the '}' (if present).
TK_TokenMustBe(TK_LBRACE, ERR_MISSING_LBRACE);
TK_NextToken();
do {} while(ProcessStatement(STMT_SCRIPT) == YES);
if(pc_LastAppendedCommand != PCD_RETURNVOID &&
pc_LastAppendedCommand != PCD_RETURNVAL)
{
if(hasReturn)
{
TK_Undo();
ERR_Error(ERR_MUST_RETURN_A_VALUE, YES, NULL);
}
PC_AppendCmd(PCD_RETURNVOID);
}
TK_TokenMustBe(TK_RBRACE, ERR_INVALID_STATEMENT);
TK_NextToken();
sym->info.scriptFunc.predefined = NO;
sym->info.scriptFunc.varCount = ScriptVarCount -
sym->info.scriptFunc.argCount;
PC_AddFunction(sym, ScriptArrayCount, ScriptArraySize);
UnspeculateFunction(sym);
InsideFunction = NULL;
}
//==========================================================================
//
// OuterMapVar
//
//==========================================================================
static void OuterMapVar(boolean local)
{
symbolNode_t *sym = NULL;
int index;
MS_Message(MSG_DEBUG, "---- %s ----\n", local ? "LeadingStaticVarDeclare" : "OuterMapVar");
do
{
if(pa_MapVarCount >= MAX_MAP_VARIABLES)
{
ERR_Error(ERR_TOO_MANY_MAP_VARS, YES);
index = MAX_MAP_VARIABLES;
}
TK_NextTokenMustBe(TK_IDENTIFIER, ERR_INVALID_IDENTIFIER);
sym = local ? SY_FindLocal(tk_String)
: SY_FindGlobal(tk_String);
if(sym != NULL)
{ // Redefined
ERR_Error(ERR_REDEFINED_IDENTIFIER, YES, tk_String);
index = MAX_MAP_VARIABLES;
}
else
{
sym = local ? SY_InsertLocal(tk_String, SY_MAPVAR)
: SY_InsertGlobal(tk_String, SY_MAPVAR);
if(ImportMode == IMPORT_Importing)