; If name isn't yet defined, defines it with value
.macro SET_DEFAULT name,value
    .ifndef name
	name=value
    .endif
.endmacro

; Sets name to 1 if value is non-zero, 0 otherwise
.macro SET_FLAG name,value
    .if value
    	name=1
    .else
	name=0
    .endif
.endmacro


.macro PRINT_FLAG flag
	.if flag
		.error "true"
	.else
		.error "false"
	.endif
	.end
.endmacro

; jxx equivalents to bxx
.macpack longbranch


; blt, bge equivalents to bcc, bcs
.macro blt Target
	bcc Target
.endmacro

.macro bge Target
	bcs Target
.endmacro

.macro jge Target
	jcs Target
.endmacro

.macro jlt Target
	jcc Target
.endmacro


; Generates string in RODATA and inserts address in code
.macro str_addr text
	.local Addr
.rodata
Addr:	
    .ifnblank text
	.byte text
    .endif
	.byte 0
.code
	.word Addr
.endmacro


; Simplified declaration of variable in RAM

; Reserves size bytes in zeropage for name
.macro zp_res name,size
.zeropage
name:	.res size
.code
.endmacro

; Reserves size bytes in bss for name
.macro bss_res name,size
.bss
name:	.res size
.code
.endmacro

; Reserves size bytes in zeropage or bss
.macro ram_res name,size
.zeropage
name:	.res size
.code
.endmacro

; Reserves byte in zeropage for name
.macro zp_byte name
	zp_res name,1
.endmacro