terminal SC_COMMENT 	: ';' !('\n'|'\r')* ('\r'? '\n')?;

; first comment
; second comment

rdax tempo, 1.5
rda delay+100, 1.3

; third comment

extraneous input '; third comment\r\n' expecting EOF

Model:
	s+=WriteDelay*;
	
WriteDelay: 'wra' arg1 = ID ('+' arg3=INT)? ',' arg2 = SPINREAL;

SPINREAL: INT ("." INT);

grammar com.holycityaudio.spincad.SpinCAD with org.eclipse.xtext.common.Terminals

generate spinCAD "http://www.holycityaudio.com/spincad/SpinCAD"

Program:
	equates += Equate*
	mem += Mem*
	comments += Comment*
	instructions += Instruction*
	;
	
//	{Instruction}
//-----------------------------------------------------------------------------	
Equate:
	EquDouble | EquInt	| EquEyeD;

EquDouble:
	'equ' ename = ID value = SPINREAL
;

EquInt:
	'equ' ename = ID value = INT
;

EquEyeD:
	'equ' ename = ID value = ID
;

Comment:
	cname = SC_COMMENT
;

Mem:
	'mem' buffer = ID length = INT
;

Instruction:
	Inst_B15_S1_9 |
	Inst_B6_S1_14 |
	Inst_S1_14_S1_10 |
	Inst_B6 |
	Inst_B24  |
	Inst | 
	Skip |
	Jam 
	;

Inst_B6_S1_14:
	ReadRegister |
	WriteRegister |
	ReadRegisterFilter |
	Maxx |
	WriteRegisterHighPass |
	WriteRegisterLowPass
;

Inst_B15_S1_9:
	ReadDelay |
	WriteDelay |
	WriteAllPass
;

Inst_B6:
	Mulx |
	Ldax
;

Inst_B24:
	And |
	Or |
	Xor
;

Inst:
	Clr | Not | Absa
;

Inst_S1_14_S1_10:
	Exp | ScaleOffset
;

ReadRegister: 'rdax' arg1 = ID ',' arg2 = SPINREAL;
WriteRegisterLowPass: 'wrlx' arg1 = ID ',' arg2 = SPINREAL;
WriteRegisterHighPass: 'wrhx' arg1 = ID ',' arg2 = SPINREAL;
WriteRegister: 'wrax' arg1 = ID ',' arg2 = SPINREAL;
Maxx: 'maxx' arg1 = ID ',' arg2 = SPINREAL;
ReadRegisterFilter: 'rdfx' arg1 = ID ',' arg2 = SPINREAL;
Mulx: 'mulx' arg1 = ID;
Ldax: 'ldax' arg1 = ID;
Exp: 'exp' arg1 = SPINREAL ',' arg2 = SPINREAL;
ScaleOffset: 'sof' arg1 = SPINREAL ',' arg2 = SPINREAL;
WriteDelay: 'wra' arg1 = ID ('^' | '#' | ('+' arg3 = INT))? ',' arg2 = SPINREAL;
WriteAllPass: 'wrap' arg1 = ID ('^' | '#' | ('+' arg3 = INT))?  ',' arg2 = SPINREAL;
ReadDelay: 'rda' arg1 = ID ('^' | '#' | ('+' arg3 = INT))? ',' arg2 = SPINREAL;
And: 'and' arg1 = INT;
Or: 'or' arg1 = INT;
Xor: 'xor' arg1 = INT;
Clr: 'clr';
Not: 'not';
Absa: 'absa';
Skip: 'skp' arg1 = ID ',' arg2 = ID;
Jam: 'jam' arg1=ID;

//------------------------
terminal SPINREAL : ('0'..'1') '.' ('0'..'9')*;
terminal SC_COMMENT 	: ';' !('\n'|'\r')* ('\r'? '\n')?;
//terminal LABEL : ('a'..'z'|'A'..'Z'|'_')('a'..'z'|'A'..'Z'|'_'|'0'..'9')*;
// terminal MEMADDR : ('a'..'z'|'A'..'Z'|'_')('a'..'z'|'A'..'Z'|'_'|'0'..'9')* ('+' INT)?;