TOKENS {

# First token must be "END"

TOK_END

# Constant and variable loading

TOK_NUM, TOK_BYTE, TOK_CSTRING, TOK_CDATA, TOK_VAR_ADDR, TOK_VAR_LOAD

TOK_SHL8, TOK_0, TOK_1

# Numeric operators

TOK_NEG, TOK_ABS, TOK_SGN, TOK_ADD, TOK_SUB, TOK_MUL, TOK_DIV, TOK_MOD

# Bitwise operators

TOK_BIT_AND, TOK_BIT_OR, TOK_BIT_EXOR

# Functions

TOK_PEEK, TOK_DPEEK

TOK_TIME, TOK_FRE, TOK_RAND

# Boolean operators

TOK_L_NOT, TOK_L_OR, TOK_L_AND

# Comparisons

TOK_LT, TOK_GT, TOK_NEQ, TOK_EQ

# Convert from int to bool

TOK_COMP_0

# Low level statements

TOK_POKE, TOK_DPOKE, TOK_MOVE, TOK_NMOVE, TOK_INC, TOK_DEC

# Graphic support statements

TOK_GRAPHICS, TOK_PLOT, TOK_DRAWTO

# Print statements

TOK_PRINT_STR, TOK_PRINT_TAB, TOK_PRINT_EOL

# I/O

TOK_GETKEY, TOK_INPUT_STR, TOK_XIO, TOK_CLOSE, TOK_GET, TOK_PUT

TOK_BPUT, TOK_BGET

# Optimization - set's IO channel to 0

TOK_IOCHN0

# Jumps

TOK_JUMP, TOK_CJUMP, TOK_CALL, TOK_RET, TOK_CRET

# FOR loop support

TOK_FOR, TOK_FOR_START, TOK_FOR_NEXT, TOK_FOR_EXIT

# Arrays

TOK_DIM, TOK_USHL

# Strings

TOK_COPY_STR, TOK_VAL, TOK_CMP_STR, TOK_INT_STR, TOK_STR_IDX, TOK_CAT_STR, TOK_CHR

# Sound off - could be implemented as simple POKE expressions, but it's shorter this way

TOK_SOUND_OFF

TOK_PAUSE

# USR, calls ML routinr

TOK_USR_ADDR, TOK_USR_PARAM, TOK_USR_CALL

# Floating point computations

TOK_INT_FP, TOK_FP_VAL, TOK_FP_SGN, TOK_FP_ABS, TOK_FP_NEG, TOK_FLOAT

TOK_FP_DIV, TOK_FP_MUL, TOK_FP_SUB, TOK_FP_ADD, TOK_FP_STORE, TOK_FP_LOAD

TOK_FP_EXP, TOK_FP_EXP10, TOK_FP_LOG, TOK_FP_LOG10, TOK_FP_INT, TOK_FP_CMP

TOK_FP_IPOW, TOK_FP_RND, TOK_FP_SQRT, TOK_FP_SIN, TOK_FP_COS, TOK_FP_ATN

TOK_FP_STR

}

EXTERN {

E_REM, E_NUMBER_WORD, E_NUMBER_BYTE, E_EOL

E_PUSH_LT, E_POP_LOOP, E_POP_REPEAT

E_POP_IF, E_ELSE, E_ELIF, E_EXIT_LOOP

E_POP_WHILE, E_POP_FOR, E_POP_PROC_1, E_POP_PROC_2, E_POP_DATA

E_CONST_STRING

E_VAR_CREATE, E_VAR_SET_TYPE

E_VAR_WORD, E_VAR_ARRAY_BYTE, E_VAR_ARRAY_WORD, E_VAR_STRING, E_VAR_ARRAY_STRING

E_LABEL, E_LABEL_DEF

E_VAR_FP, E_NUMBER_FP

}

FP_EXPR: floating point expression

FP_T_EXPR FP_E_EXPR_MORE FP_M_EXPR_MORE FP_EXPR_MORE

FP_EXPR_MORE:

"+" FP_T_EXPR FP_E_EXPR_MORE FP_M_EXPR_MORE emit TOK_FP_ADD FP_EXPR_MORE

"-" FP_T_EXPR FP_E_EXPR_MORE FP_M_EXPR_MORE emit TOK_FP_SUB FP_EXPR_MORE

pass

FP_M_EXPR_MORE:

"*" FP_T_EXPR FP_E_EXPR_MORE emit TOK_FP_MUL FP_M_EXPR_MORE

"/" FP_T_EXPR FP_E_EXPR_MORE emit TOK_FP_DIV FP_M_EXPR_MORE

pass

FP_E_EXPR_MORE:

"^" T_EXPR emit TOK_FP_IPOW FP_E_EXPR_MORE

"^" emit TOK_FP_LOG10 FP_T_EXPR emit TOK_FP_MUL emit TOK_FP_EXP10 FP_E_EXPR_MORE

pass

FP_T_EXPR: floating point constant, variable or function

emit TOK_FLOAT E_NUMBER_FP

"-" FP_T_EXPR emit TOK_FP_NEG

"+" FP_T_EXPR

# FP Functions

"ABS" FP_PAR_EXPR emit TOK_FP_ABS

"ATN" FP_PAR_EXPR emit TOK_FP_ATN

"SGN" FP_PAR_EXPR emit TOK_FP_SGN

"EXP10" FP_PAR_EXPR emit TOK_FP_EXP10

"EXP" FP_PAR_EXPR emit TOK_FP_EXP

"LOG10" FP_PAR_EXPR emit TOK_FP_LOG10

"LOG" FP_PAR_EXPR emit TOK_FP_LOG

"SQR" FP_PAR_EXPR emit TOK_FP_SQRT

"SIN" FP_PAR_EXPR emit TOK_FP_SIN

"COS" FP_PAR_EXPR emit TOK_FP_COS

"VAL" STR_PAR_EXPR emit TOK_FP_VAL

"RND()" emit TOK_FP_RND

FP_PAR_EXPR

emit TOK_VAR_ADDR E_VAR_FP "%" emit TOK_FP_LOAD

INT_EXPR emit TOK_INT_FP

FP_PAR_EXPR: left parenthesis

"(" FP_EXPR ")"

INT_EXPR: integer expression

T_EXPR BIT_EXPR_MORE M_EXPR_MORE INT_EXPR_MORE

INT_EXPR_MORE:

"+" T_EXPR BIT_EXPR_MORE M_EXPR_MORE emit TOK_ADD INT_EXPR_MORE

"-" T_EXPR BIT_EXPR_MORE M_EXPR_MORE emit TOK_SUB INT_EXPR_MORE

pass

M_EXPR_MORE:

"*" T_EXPR BIT_EXPR_MORE emit TOK_MUL M_EXPR_MORE

"/" T_EXPR BIT_EXPR_MORE emit TOK_DIV M_EXPR_MORE

"MOD" T_EXPR BIT_EXPR_MORE emit TOK_MOD M_EXPR_MORE

pass

BIT_EXPR_MORE:

"&" T_EXPR emit TOK_BIT_AND BIT_EXPR_MORE

"!" T_EXPR emit TOK_BIT_OR BIT_EXPR_MORE

"EXOR" T_EXPR emit TOK_BIT_EXOR BIT_EXPR_MORE

pass

NEG_EXPR:

"-" T_EXPR

"+" NEG_EXPR

T_EXPR emit TOK_NEG

ADR_EXPR: string or variable

STR_EXPR

VAR_WORD_LVALUE

VAR_BYTE_LVALUE

emit TOK_VAR_LOAD E_VAR_ARRAY_WORD

emit TOK_VAR_LOAD E_VAR_ARRAY_BYTE

emit TOK_VAR_LOAD E_VAR_ARRAY_STRING

USR_EXPR_MORE:

"," EXPR emit TOK_USR_PARAM USR_EXPR_MORE

pass

T_EXPR: integer constant, variable or function

emit TOK_BYTE E_NUMBER_BYTE

emit TOK_NUM E_NUMBER_WORD

"-" NEG_EXPR

"+" T_EXPR

"NOT" NOT_EXPR emit TOK_L_NOT

# Special (predefined) variables

"TIME" emit TOK_TIME

# Variables as R-Values, push value into stack

ARRAY_WORD_ADDR emit TOK_DPEEK

VAR_BYTE_LVALUE emit TOK_PEEK

emit TOK_VAR_LOAD E_VAR_WORD

# Functions

"ABS" PAR_EXPR emit TOK_ABS

"SGN" PAR_EXPR emit TOK_SGN

"PEEK" PAR_EXPR emit TOK_PEEK

"PADDLE" emit TOK_NUM word PADDL0 emit TOK_BYTE emit 7 RD_PORT

"PTRIG" emit TOK_NUM word PTRIG0 emit TOK_BYTE emit 7 RD_PORT

"STICK" emit TOK_NUM word STICK0 emit TOK_BYTE emit 3 RD_PORT

"STRIG" emit TOK_NUM word STRIG0 emit TOK_BYTE emit 3 RD_PORT

"INT" FP_PAR_EXPR emit TOK_FP_INT

"RAND" PAR_EXPR emit TOK_RAND

"DPEEK" PAR_EXPR emit TOK_DPEEK

"FRE()" emit TOK_FRE

"ERR()" emit TOK_BYTE emit IOERROR emit TOK_PEEK

"USR(" EXPR emit TOK_USR_ADDR USR_EXPR_MORE ")" emit TOK_USR_CALL

"ADR(" ADR_EXPR ")"

"LEN" STR_PAR_EXPR emit TOK_PEEK # First byte of string is the length

"VAL" STR_PAR_EXPR emit TOK_VAL

"ASC" STR_PAR_EXPR emit TOK_1 emit TOK_ADD emit TOK_PEEK # TODO: does not check for empty strings.

"KEY()" emit TOK_NUM word CH emit TOK_PEEK emit TOK_BYTE emit 255 emit TOK_BIT_EXOR

PAR_EXPR

RD_PORT:

PAR_EXPR emit TOK_BIT_AND emit TOK_ADD emit TOK_PEEK

PAR_EXPR: left parenthesis

"(" EXPR ")"

STR_PAR_EXPR: left parenthesis

"(" STR_EXPR ")"

OR_AND_BOOL:

OR_EXPR_RIGHT

AND_EXPR_RIGHT

TEST_BOOL_EXPR:

emit TOK_COMP_0 OR_AND_BOOL

COMP_EXPR_RIGHT OR_EXPR_MORE AND_EXPR_MORE COMP_EXPR_MORE

emit TOK_INT_FP COMP_FP_RIGHT OR_EXPR_MORE AND_EXPR_MORE COMP_EXPR_MORE

pass

EXPR:

INT_EXPR TEST_BOOL_EXPR

STR_EXPR COMP_STR_RIGHT

FP_EXPR COMP_FP_RIGHT

FORCE_BOOL_EXPR:

NOT_EXPR AND_EXPR_MORE OR_EXPR_MORE

OR_EXPR_RIGHT:

"OR" NOT_EXPR AND_EXPR_MORE emit TOK_L_OR OR_EXPR_MORE

OR_EXPR_MORE:

OR_EXPR_RIGHT

pass

AND_EXPR_RIGHT:

"AND" NOT_EXPR emit TOK_L_AND AND_EXPR_MORE

AND_EXPR_MORE:

AND_EXPR_RIGHT

pass

NOT_EXPR:

"NOT" NOT_EXPR emit TOK_L_NOT

INT_EXPR COMP_OR_BOOL

FP_EXPR COMP_FP_RIGHT

STR_EXPR COMP_STR_RIGHT

COMP_OR_BOOL:

COMP_EXPR_RIGHT COMP_EXPR_MORE

emit TOK_INT_FP COMP_FP_RIGHT COMP_EXPR_MORE

emit TOK_COMP_0

COMP_EXPR_RIGHT:

"<=" INT_EXPR emit TOK_GT emit TOK_L_NOT

">=" INT_EXPR emit TOK_LT emit TOK_L_NOT

"<>" INT_EXPR emit TOK_NEQ

"<" INT_EXPR emit TOK_LT

">" INT_EXPR emit TOK_GT

"=" INT_EXPR emit TOK_EQ

COMP_FP_RIGHT: integer expression

"=" FP_EXPR emit TOK_FP_CMP emit TOK_EQ

">" FP_EXPR emit TOK_FP_CMP emit TOK_GT

">=" FP_EXPR emit TOK_FP_CMP emit TOK_LT emit TOK_L_NOT

"<>" FP_EXPR emit TOK_FP_CMP emit TOK_NEQ

"<=" FP_EXPR emit TOK_FP_CMP emit TOK_GT emit TOK_L_NOT

"<" FP_EXPR emit TOK_FP_CMP emit TOK_LT

COMP_STR_RIGHT: integer expression

"=" STR_EXPR emit TOK_CMP_STR emit TOK_EQ

">" STR_EXPR emit TOK_CMP_STR emit TOK_GT

">=" STR_EXPR emit TOK_CMP_STR emit TOK_LT emit TOK_L_NOT

"<>" STR_EXPR emit TOK_CMP_STR emit TOK_NEQ

"<=" STR_EXPR emit TOK_CMP_STR emit TOK_GT emit TOK_L_NOT

"<" STR_EXPR emit TOK_CMP_STR emit TOK_LT

COMP_EXPR_MORE:

COMP_EXPR_RIGHT COMP_EXPR_MORE

pass

STR_EXPR: string expression

STR_EXPR_BASE OPT_STR_INDEX

OPT_STR_INDEX:

"[" EXPR_2 "]" emit TOK_STR_IDX OPT_STR_INDEX

"[" EXPR "]" emit TOK_BYTE emit 255 emit TOK_STR_IDX OPT_STR_INDEX

pass

STR_EXPR_BASE:

# Either, a constant string

"\"" emit TOK_CSTRING E_CONST_STRING

# Or a string function

"CHR$" PAR_EXPR emit TOK_CHR

"STR$" PAR_EXPR emit TOK_INT_STR

"STR$" FP_PAR_EXPR emit TOK_FP_STR

# Or a string array

ARRAY_STRING_ADDR emit TOK_DPEEK

PRINT_SEP:

"," emit TOK_PRINT_TAB

";"

PRINT_SEP_MORE:

PRINT_SEP PRINT_SEP_MORE

pass

PRINT_ONE:

EXPR emit TOK_INT_STR emit TOK_PRINT_STR

STR_EXPR emit TOK_PRINT_STR

PRINT_EXPR:

PRINT_SEP_MORE PRINT_ONE PRINT_NEXT

emit TOK_PRINT_EOL

PRINT_NEXT:

PRINT_SEP PRINT_SEP_MORE PRINT_ONE PRINT_NEXT

PRINT_SEP PRINT_SEP_MORE emit TOK_IOCHN0

emit TOK_PRINT_EOL

PRINT_ONE:

EXPR emit TOK_INT_STR emit TOK_PRINT_STR PRINT_NEXT

FP_EXPR emit TOK_FP_STR emit TOK_PRINT_STR PRINT_NEXT

STR_EXPR emit TOK_PRINT_STR PRINT_NEXT

PRINT_EXPR:

PRINT_SEP_MORE PRINT_ONE

emit TOK_PRINT_EOL

PRINT_NEXT:

PRINT_SEP PRINT_SEP_MORE PRINT_ONE

PRINT_SEP PRINT_SEP_MORE emit TOK_IOCHN0

E_EOL emit TOK_PRINT_EOL

THEN_OR_MULTILINE:

"Then" PARSE_STATEMENT E_POP_IF

pass

VAR_CREATE_TYPE:

"$" emit VT_STRING

"%" emit VT_FLOAT

ARRAY_STRING_ADDR

VAR_FP_LVALUE:

emit TOK_VAR_ADDR E_VAR_FP "%"

EQUAL: variable assignment

"="

STEP_OPTIONAL:

"Step" EXPR

emit TOK_1

NEXT_VARNAME:

E_VAR_WORD

E_VAR_ARRAY_WORD

emit 0 pass

POSITION:

emit TOK_BYTE emit COLCRS EXPR "," emit TOK_DPOKE emit TOK_BYTE emit ROWCRS EXPR emit TOK_POKE

SOUND:

EXPR emit TOK_USHL emit TOK_NUM word AUDF1 emit TOK_ADD "," EXPR "," EXPR_AB emit TOK_SHL8 emit TOK_ADD emit TOK_DPOKE emit TOK_NUM word AUDCTL emit TOK_0 emit TOK_POKE emit TOK_NUM word SKCTL emit TOK_BYTE emit 3 emit TOK_POKE

EXPR emit TOK_USHL emit TOK_NUM word AUDF1 emit TOK_ADD emit TOK_0 emit TOK_DPOKE

emit TOK_SOUND_OFF

ARRAY_WORD_ADDR:

emit TOK_VAR_LOAD E_VAR_ARRAY_WORD PAR_EXPR emit TOK_USHL emit TOK_ADD

ARRAY_STRING_ADDR:

emit TOK_VAR_LOAD E_VAR_ARRAY_STRING "$" PAR_EXPR emit TOK_USHL emit TOK_ADD

# This is the same as "ARRAY_BYTE_ADDR"

"," DIM_VAR DIM_MORE

"\"" emit TOK_CSTRING E_CONST_STRING emit TOK_PRINT_STR PRINT_SEP # Prints a given string

PRINT_SEP # If starts with ',' or ';', don't print anyting

emit TOK_BYTE emit 63 emit TOK_PUT # Prints a '?' by default

INPUT_VAR_LIST:

INPUT_VAR INPUT_VAR_MORE

INPUT_VAR_MORE:

"," INPUT_VAR_LIST

pass

INPUT_VAR:

VAR_WORD_LVALUE emit TOK_INPUT_STR emit TOK_VAL emit TOK_DPOKE

VAR_BYTE_LVALUE emit TOK_INPUT_STR emit TOK_VAL emit TOK_POKE

VAR_STR_LVALUE emit TOK_INPUT_STR emit TOK_COPY_STR

VAR_FP_LVALUE emit TOK_INPUT_STR emit TOK_FP_VAL emit TOK_FP_STORE

DIM_VAR_TYPE_NUM: array type

"Byte" emit VT_ARRAY_BYTE

"Word" emit TOK_USHL emit VT_ARRAY_WORD

emit TOK_USHL emit VT_ARRAY_WORD

DIM_VAR_TYPE:

"$" PAR_EXPR emit TOK_USHL emit VT_ARRAY_STRING

IO_CHAN_COMMA:

IO_CHAN ","

IO_CHAN_OPT:

IO_CHAN_COMMA

pass

GETK_EXPR: variable name

VAR_BYTE_LVALUE emit TOK_GETKEY emit TOK_POKE

VAR_WORD_LVALUE emit TOK_GETKEY emit TOK_DPOKE

GET_EXPR: variable name

VAR_BYTE_LVALUE emit TOK_GET emit TOK_POKE GET_EXPR_MORE

VAR_WORD_LVALUE emit TOK_GET emit TOK_DPOKE GET_EXPR_MORE

GET_EXPR_MORE:

"," GET_EXPR

emit TOK_IOCHN0

EXPR_AB:

EXPR emit TOK_USHL emit TOK_USHL emit TOK_USHL emit TOK_USHL "," EXPR emit TOK_ADD

EXPR_2:

EXPR "," EXPR

XIO_EXPR:

EXPR_2 emit TOK_SHL8 emit TOK_ADD "," STR_EXPR emit TOK_XIO

DATA_WORDS: data word

"," E_NUMBER_WORD DATA_WORDS

pass

DATA_BYTES: data byte

# To store bytes, simply remove upper part

"," E_NUMBER_BYTE DATA_BYTES

pass

DATA_TYPE: data type

"Byte" emit VT_ARRAY_BYTE E_VAR_SET_TYPE EQUAL E_NUMBER_BYTE DATA_BYTES

"Word" emit VT_ARRAY_WORD E_VAR_SET_TYPE EQUAL E_NUMBER_WORD DATA_WORDS

DATA_END:

","

E_POP_DATA emit TOK_DPOKE

DATA_VAR: new array name

emit TOK_VAR_ADDR E_VAR_CREATE "()" emit TOK_CDATA emit LT_DATA E_PUSH_LT

pass

PARSE_LINE_COMMAND:

"." E_REM

"?" IO_CHAN_OPT PRINT_EXPR

"PRint" IO_CHAN_OPT PRINT_EXPR

"INput" INPUT_STR INPUT_VAR_LIST emit TOK_IOCHN0

"GEt" GETK_EXPR

"GEt" IO_CHAN_COMMA GET_EXPR

"PUt" IO_CHAN_OPT EXPR emit TOK_PUT

"CLS" IO_CHAN_OPT emit TOK_BYTE emit CLS emit TOK_PUT

"Poke" EXPR_2 emit TOK_POKE

"Dpoke" EXPR_2 emit TOK_DPOKE

"Move" EXPR_2 "," EXPR emit TOK_MOVE

"-move" EXPR_2 "," EXPR emit TOK_NMOVE

"DO" emit LT_DO_LOOP E_PUSH_LT

"Loop" emit TOK_JUMP E_POP_LOOP

"Repeat" emit LT_REPEAT E_PUSH_LT

"Until" FORCE_BOOL_EXPR emit TOK_CJUMP E_POP_REPEAT

"While" emit LT_WHILE_1 E_PUSH_LT FORCE_BOOL_EXPR emit TOK_CJUMP emit LT_WHILE_2 E_PUSH_LT

"WEnd" emit TOK_JUMP E_POP_WHILE

"If" FORCE_BOOL_EXPR emit TOK_CJUMP emit LT_IF E_PUSH_LT THEN_OR_MULTILINE

"For" VAR_WORD_LVALUE EQUAL EXPR emit TOK_FOR_START "TO" EXPR STEP_OPTIONAL emit TOK_FOR emit TOK_L_NOT emit TOK_CJUMP emit LT_FOR_2 E_PUSH_LT emit LT_FOR_1 E_PUSH_LT

"Next" emit TOK_FOR_NEXT emit TOK_CJUMP NEXT_VARNAME E_POP_FOR emit TOK_FOR_EXIT

"Else" emit TOK_JUMP E_ELSE

"ELIf" emit TOK_JUMP E_ELIF FORCE_BOOL_EXPR emit TOK_CJUMP emit LT_IF E_PUSH_LT

"ENDif" E_POP_IF

"EXit" emit TOK_JUMP E_EXIT_LOOP

"Graphics" emit TOK_BYTE emit IOCHN emit TOK_BYTE emit 96 emit TOK_POKE emit TOK_CLOSE EXPR emit TOK_GRAPHICS

"Color" emit TOK_BYTE emit COLOR EXPR emit TOK_POKE

"FColor" emit TOK_NUM word FILDAT EXPR emit TOK_POKE

"POSition" POSITION

"PLot" POSITION emit TOK_BYTE emit COLOR emit TOK_PEEK emit TOK_PLOT

"DRawto" POSITION emit TOK_BYTE emit DRAWLN emit TOK_DRAWTO

"FIllto" POSITION emit TOK_BYTE emit FILLIN emit TOK_DRAWTO

"SEtcolor" EXPR emit TOK_NUM word COLOR0 emit TOK_ADD "," EXPR_AB emit TOK_POKE

"Sound" SOUND

"DIm" DIM_VAR DIM_MORE

"CLose" IO_CHAN emit TOK_CLOSE

"Open" IO_CHAN_COMMA emit TOK_BYTE emit OPEN XIO_EXPR

"Xio" IO_CHAN_COMMA EXPR "," XIO_EXPR

"BPut" IO_CHAN_COMMA EXPR_2 emit TOK_BPUT

"BGet" IO_CHAN_COMMA EXPR_2 emit TOK_BGET

"PAuse" EXPR emit TOK_PAUSE

"INC" VAR_WORD_LVALUE emit TOK_INC

"DEc" VAR_WORD_LVALUE emit TOK_DEC

"PROc" emit TOK_JUMP emit LT_PROC_1 E_PUSH_LT E_LABEL_DEF emit LT_PROC_2 E_PUSH_LT

"ENDProc" E_POP_PROC_2 emit TOK_RET E_POP_PROC_1

"EXEc" emit TOK_CALL E_LABEL

"DAta" DATA_VAR DATA_TYPE DATA_END

"END" emit TOK_END

"DEG" emit TOK_BYTE emit DEGFLAG emit TOK_1 emit TOK_POKE

"RAd" emit TOK_BYTE emit DEGFLAG emit TOK_0 emit TOK_POKE

PARSE_LINE_ASSIGN: &LOW_ERROR

VAR_WORD_LVALUE EQUAL EXPR emit TOK_DPOKE

VAR_BYTE_LVALUE EQUAL EXPR emit TOK_POKE

VAR_STR_LVALUE EQUAL STR_EXPR emit TOK_COPY_STR

VAR_STR_LVALUE EQUAL "+" STR_EXPR emit TOK_CAT_STR

VAR_FP_LVALUE EQUAL FP_EXPR emit TOK_FP_STORE

SKIP_COMMENT:

"'" E_REM

E_EOL

pass

PARSE_STATEMENT: statement or variable assignment

PARSE_LINE_COMMAND E_EOL

PARSE_LINE_ASSIGN

pass

PARSE_START:

":" PARSE_START

PARSE_STATEMENT SKIP_COMMENT