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101 lines
4.4 KiB
C
101 lines
4.4 KiB
C
/*************************************
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* C02 Variable Management Routines *
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*************************************/
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/* Variable Record */
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struct varrec {
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char name[VARLEN+1]; //Variable Name Table (string)
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char modifr; //Variable Modifier (MTxxx)
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char type; //Variable Type (VTxxx)
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char size[4]; //Variable Array Size (string)
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char stcidx; //Variable Struct Index
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};
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struct varrec vartbl[MAXVAR+1]; //Variable Table
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struct varrec varble; //Variable Table Entry
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int varcnt; //Number of Variables in Table
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int varidx; //Index into Variable Tables
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char vrname[MAXVAR+1]; //Variable Name
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int vartyp; //Variable/Member Type
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int vrwrtn; //Variables Written Flag
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struct strctd { //Struct Definition
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char name[STCLEN+1]; //Struct Name
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int size; //Total Length of Struct
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};
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struct strctd strcts[MAXSTC+1]; //Table of Defined Structs
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struct strctd strct; //Defined Struct
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int stccnt; //Number of Structs Defined
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int stcidx; //Index into Struct Tables
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struct membrd { //Struct Membetr Definition
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char name[STMLEN+1]; //Member Name
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int strcti; //Parent Struct Index
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int vartyp; //Member Symbol Type
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int symidx; //Member Symbol Index
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int offset; //Offset into Struct
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int size; //Member Size
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};
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struct membrd membrs[MAXSTM+1]; //Table of Defined Members
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struct membrd membr; //Defined Member
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int mbrcnt; //Number of Struct Members Defined
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int mbridx; //Index into Struct Member Tables
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int mbrofs; //Member Offset
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int mbrsiz; //Member Size
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enum vtypes {VTVOID, VTREG, VTCHAR, VTINT, VTARRAY, VTSTRUCT}; //Variable Types
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unsigned char datvar[DATASPC+1]; //Variable Data Storage
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int datlen[MAXVAR+1]; //Variable Data Length
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char dattyp[MAXVAR+1]; //Variable Data Type
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char dattmp[DATASPC+1]; //Variable Temporary Data
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int dtype; //Data Type
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int dlen; //Length of Variable Data
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int dsize; //Total Data Length
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enum dtypes {DTBYTE, DTINT, DTSTR, DTARRY}; //Variable Data Types
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/* Variable Modifier Types (Bit Mask) */
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#define MTNONE 0 //No Modifier
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#define MTALS 1 //Alias
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#define MTCONST 2 //Constant
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#define MTZP 4 //Zero Page
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#define MTALGN 128 //Aligned
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/*Value Parsing Flags (BitMask) */
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#define ALWDEF 0 //Allow Default
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#define ALWREG 1 //Allow Register
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#define ALWCON 2 //Allow CONST Variable
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#define ALWINT 4 //Allow Integer
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int symdef(char *name); //Is Variable defined (TRUE or FALSE)
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int rambas; //RAM Base Address (0=None)
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int wrtbas; //Write Base Address (0=None)
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int zpaddr; //Current Zero-Page Address
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int zpgbgn; //Start of Free Zero-Page
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int zpgend; //End of Free Zero-Page
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char wrtofs[6]; //Write Address Offset
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void addvar(int m, int t); //Parse and Compile Variable Declaration
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void addstc(); //Parse and Compile Structure Declaration
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void defstc(); //Parse Structure Definition
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int fndvar(char *name); //Find Variable in Variable Table
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void chksym(int alwreg, int alwcon, char *name); //Check for Variable
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void prsdts(); //Parse Data String
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void setdat(); //Set Variable Data
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void setvar(int m, int t); //Set Variable Name and Size
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void prsdts(); //Parse Data String
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void prsvar(int alwreg, int alwcon); //Parse Next Word as Variable
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void prsvrw(int alwreg, int alwcon); //Parse word as Variable
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void prsmbr(char* name); //Parse Struct Member
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int psizof(void); //Parse SizeOf Operator
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int pidxof(void); //Parse IndexOf Operator
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void reqvar(int alwary); //Require and Parse Variable Name
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void setdat(); //Store variable data
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void setvar(int m, int t); //Add Variable to Variable table
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void wvrtbl(); //Create Variable Table
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void logstc(void); //Print Struct Tables to Log File
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