From 5e731c349b63a557b2e705ce3cd741f90c62c694 Mon Sep 17 00:00:00 2001
From: Florian Jung <flo@thinkpad.(none)>
Date: Sat, 1 Jan 2011 17:02:53 +0100
Subject: Replace class Parser with function parse()

---
 synth/main.cpp   |   4 +-
 synth/parser.cpp | 673 ++++++++++++++++++++++++++++---------------------------
 synth/parser.h   |  32 +--
 3 files changed, 350 insertions(+), 359 deletions(-)

(limited to 'synth')

diff --git a/synth/main.cpp b/synth/main.cpp
index deebf06..ae2e0d8 100644
--- a/synth/main.cpp
+++ b/synth/main.cpp
@@ -95,7 +95,6 @@ int main(int argc, char** argv)
 					lfo[i][j][k]= (1.0 + temp*(float(LFO_MAX)*k/N_LFO_LEVELS)) * ONE;
 			}
 		
-		Parser parser;
 		program_settings=new program_t[128];
 
 		for (i=0;i<128;i++)
@@ -104,8 +103,7 @@ int main(int argc, char** argv)
 			{
 				try
 				{
-					parser.parse(programfile[i]);
-					program_settings[i]=parser.get_results();
+					program_settings[i]=parse(programfile[i]);
 				}
 				catch (string err)
 				{
diff --git a/synth/parser.cpp b/synth/parser.cpp
index 52717a5..96648d6 100644
--- a/synth/parser.cpp
+++ b/synth/parser.cpp
@@ -1,3 +1,5 @@
+//uniniten
+
 #include <cstdlib>
 #include <fstream>
 
@@ -9,21 +11,32 @@
 #include "readwave.h"
 
 
-Parser::Parser()
+string extract_array_name(string s)
 {
-	n_osc=0;
-	osc=NULL;
-	env=NULL;
-	for (int i=0;i<128;i++)
-		controller_default[i]=0;
+	size_t p;
+	p=s.find('[');
+	if (p!=string::npos)
+		return s.substr(0,p);
+	else
+		return s;	
 }
 
-Parser::~Parser()
+int extract_array_index(string s, int dim)
 {
-	uninit_stuff();
+	size_t p=-1,p2;
+	for (int i=0;i<dim;i++)
+	{
+		p=s.find('[',p+1);
+		if (p==string::npos) return -1;
+	}
+	
+	p2=s.find(']',p+1);
+	if (p2==string::npos) return -1;
+	
+	return atoi(s.substr(p+1,p2-p-1).c_str());
 }
 
-list<string> Parser::extract_terms(string s)
+list<string> extract_terms(string s)
 {
 	list<string> result;
 	
@@ -43,7 +56,7 @@ list<string> Parser::extract_terms(string s)
 	return result;
 }
 
-list<string> Parser::extract_factors(string s)
+list<string> extract_factors(string s)
 {
 	list<string> result;
 	
@@ -63,7 +76,7 @@ list<string> Parser::extract_factors(string s)
 	return result;
 }
 
-list<term_t> Parser::extract_formula(string s)
+list<term_t> extract_formula(string s)
 {
 	list<term_t> result;
 	term_t tmp;
@@ -116,7 +129,7 @@ list<term_t> Parser::extract_formula(string s)
 	return result;
 }
 
-param_factor_t Parser::parse_pfactor(string s) //TODO fast dasselbe wie oben. mergen?
+param_factor_t parse_pfactor(string s) //TODO fast dasselbe wie oben. mergen?
 { //TODO cont müsste vel heißen       FINDMICH --->  ^ ^ ^
 	param_factor_t result;
 	result.offset=0;
@@ -169,10 +182,8 @@ param_factor_t Parser::parse_pfactor(string s) //TODO fast dasselbe wie oben. me
 	return result;
 }
 
-void Parser::init_stuff()
+void init_oscs(int n_osc, oscillator_t *osc)
 {
-	env=new env_settings_t[n_osc];
-	osc=new oscillator_t[n_osc];
 	for (int i=0;i<n_osc;i++)
 	{
 		osc[i].n_osc=n_osc;
@@ -189,15 +200,23 @@ void Parser::init_stuff()
 		osc[i].vibrato_depth=0;
 		osc[i].vibrato_lfo=0;
 		osc[i].custom_wave=NULL;
-		
-		
+	}
+}
+
+void init_envs(int n_osc, env_settings_t *env)
+{
+	for (int i=0;i<n_osc;i++)
+	{
 		env[i].attack=0;
 		env[i].decay=0;
 		env[i].sustain=ONE;
 		env[i].release=0;
 		env[i].hold=true;
 	}
+}
 
+void init_filter(filter_params_t &filter)
+{
 	filter.enabled=false;
 	filter.env_amount=0;
 	filter.env_settings.attack=filter.env_settings.decay=
@@ -209,9 +228,10 @@ void Parser::init_stuff()
 	filter.resonance=0;
 	filter.trem_strength=0;
 	filter.trem_lfo=0;
-	
-	
-	
+}
+
+void init_pfactors(int n_osc, pfactor_formula_t &pfactor)
+{
 	pfactor.out=new param_factor_t [n_osc];
 	pfactor.fm=new param_factor_t* [n_osc];
 	
@@ -236,46 +256,12 @@ void Parser::init_stuff()
 			pfactor.fm[i][j].vel_amount=0;			
 		}
 	}
-
-}
-void Parser::uninit_stuff()
-{
-	if (osc)
-	{
-		for (int i=0;i<n_osc;i++)
-			delete [] osc[i].fm_strength;
-		
-		delete [] osc;
-		osc=NULL;
-	}
-	if (env)
-		delete [] env;
 }
 
-string Parser::extract_array_name(string s)
-{
-	size_t p;
-	p=s.find('[');
-	if (p!=string::npos)
-		return s.substr(0,p);
-	else
-		return s;	
-}
 
-int Parser::extract_array_index(string s, int dim)
-{
-	size_t p=-1,p2;
-	for (int i=0;i<dim;i++)
-	{
-		p=s.find('[',p+1);
-		if (p==string::npos) return -1;
-	}
-	
-	p2=s.find(']',p+1);
-	if (p2==string::npos) return -1;
-	
-	return atoi(s.substr(p+1,p2-p-1).c_str());
-}
+
+
+
 
 //if this function fails, this WILL BE fatal if unhandled in the
 //caller function. so this function throws errors
@@ -283,8 +269,28 @@ int Parser::extract_array_index(string s, int dim)
 //state. if these settings are given to some oscillator_t by
 //operator=, it will probably die while trying to create an array
 //with size 0 or so.
-void Parser::parse(string fn)
+program_t parse(string fn)
 {
+	int n_osc=0;
+	oscillator_t *osc=NULL;
+	env_settings_t *env=NULL;
+
+	set<parameter_t> affect[128];
+	map< parameter_t, list<term_t> > formula;
+	int controller_default[128];
+
+	for (int i=0;i<128;i++)
+		controller_default[i]=0;
+
+	filter_params_t filter;
+	
+	pfactor_formula_t pfactor;
+	
+	fixed_t sync_factor;
+
+
+	
+	
 	char buf[2000];
 	list<term_t> terms;
 	string line;
@@ -299,298 +305,299 @@ void Parser::parse(string fn)
 	
 	int state;
 	
-	uninit_stuff();
-	
 	ifstream f;
 	f.open(fn.c_str());
-	if (f.good())
+	if (!f.good())
+		throw string ("could not open '"+fn+"'");
+	//else
+		
+	state=0;
+	while (!f.eof())
 	{
-		state=0;
-		while (!f.eof())
+		f.getline(buf,sizeof(buf)/sizeof(*buf)-1);
+		line=buf;
+		line=remove_all_spaces(buf);
+		if ((line!="") && (line[0]!='#')) //ignore comments and empty lines
 		{
-			f.getline(buf,sizeof(buf)/sizeof(*buf)-1);
-			line=buf;
-			line=remove_all_spaces(buf);
-			if ((line!="") && (line[0]!='#')) //ignore comments and empty lines
+			if (line=="controllers:")
 			{
-				if (line=="controllers:")
-				{
-					state=2;
-					continue;
-				}
-				else if (line=="defaults:")
-				{
-					state=3;
-					continue;
-				}
-				else if (line=="velocity:")
-				{
-					state=4;
-					continue;
-				}
+				state=2;
+				continue;
+			}
+			else if (line=="defaults:")
+			{
+				state=3;
+				continue;
+			}
+			else if (line=="velocity:")
+			{
+				state=4;
+				continue;
+			}
 
-				var=extract_var(line);
-				array=extract_array_name(var);
-				strval=extract_val(line);
-				val=atof(strval.c_str());
+			var=extract_var(line);
+			array=extract_array_name(var);
+			strval=extract_val(line);
+			val=atof(strval.c_str());
+			
+			switch (state)
+			{
+				case 0: //expect and read number of oscillators
+					if (var!="oscillators")
+						throw string("need to know number of oscillators");
+					else
+						n_osc=val;
+					
+					if (n_osc<=0) throw string("invalid number of oscillators");
+					
+					//init stuff
+					env=new env_settings_t[n_osc];
+					osc=new oscillator_t[n_osc];
+					init_oscs(n_osc,osc);
+					init_envs(n_osc,env);
+					init_filter(filter);
+					init_pfactors(n_osc,pfactor);
+					
+					state=1;
+					break;
 				
-				switch (state)
-				{
-					case 0: //expect and read number of oscillators
-						if (var!="oscillators")
-							throw string("need to know number of oscillators");
-						else
-							n_osc=val;
-						
-						if (n_osc<=0) throw string("invalid number of oscillators");
-						
-						init_stuff();
-						
-						state=1;
-						break;
+				case 1: //read and set information about oscillator settings
+					p=param_to_enum(array);
+					
+					ind=extract_array_index(var,1);
+					if ( param_needs_index(p) &&  (!((ind>=0) && (ind<n_osc))) )
+						throw string("out of array bounds");
+					
 					
-					case 1: //read and set information about oscillator settings
-						p=param_to_enum(array);
+					switch (p)
+					{
+						case MODULATION:						
+							ind2=extract_array_index(var,2);
+							if (!((ind2>=0) && (ind2<n_osc)))
+								throw string("out of array bounds");
 						
-						ind=extract_array_index(var,1);
-						if ( param_needs_index(p) &&  (!((ind>=0) && (ind<n_osc))) )
+							osc[ind].fm_strength[ind2]=val*ONE;
+							break;
+						case OUTPUT:
+							osc[ind].output=val*ONE;
+							break;
+						case WAVEFORM:
+							if (isfloat(strval))
+							{
+								osc[ind].waveform=int(val);
+							}
+							else
+							{
+								size_t pos=strval.find(':');
+								if (pos==string::npos)
+									throw string("expected 'freq:file.wav', found no ':'");
+								
+								float given_freq=atof(strval.substr(0,pos).c_str());									
+								string wavefile=strval.substr(pos+1);
+
+								if (given_freq<=0)
+									throw string("illegal freq specified for custom wave '"+wavefile+"'");
+								
+								osc[ind].custom_wave=new custom_wave_t;
+								read_wave(wavefile.c_str(), osc[ind].custom_wave);
+								osc[ind].custom_wave->samp_rate/=given_freq;
+							}
+							break;
+						case FACTOR:
+							osc[ind].factor=val*ONE;
+							break;
+						case TREMOLO:
+							osc[ind].tremolo_depth=int(val);
+							break;
+						case TREM_LFO:
+							if (strval=="snh")
+								osc[ind].tremolo_lfo=SNH_LFO;
+							else
+							{
+								osc[ind].tremolo_lfo= int(val);
+								if ((val<0) || (val>=N_LFOS))
+									throw string("invalid value for tremolo_lfo");
+							}
+							break;
+						case VIBRATO:
+							osc[ind].vibrato_depth=val;
+							break;
+						case VIB_LFO:
+							if (strval=="snh")
+								osc[ind].vibrato_lfo= SNH_LFO;
+							else
+							{
+								osc[ind].vibrato_lfo= int(val);
+								if ((val<0) || (val>=N_LFOS))
+									throw string("invalid value for vibrato_lfo");
+							}
+							break;
+						case ATTACK:
+							env[ind].attack=val*samp_rate;
+							break;
+						case DECAY:
+							env[ind].decay=val*samp_rate;
+							break;
+						case SUSTAIN:
+							env[ind].sustain=val*ONE;
+							break;
+						case RELEASE:
+							env[ind].release=val*samp_rate;
+							break;
+						case HOLD:
+							env[ind].hold=(val!=0);
+							break;
+						case KSR:
+							osc[ind].ksr=val;
+							break;
+						case KSL:
+							osc[ind].ksl=val;
+							break;
+						case SYNC:
+							osc[ind].sync=(val!=0);
+							break;
+						case FILTER_ENABLED:
+							filter.enabled=(val!=0);
+							break;
+						case FILTER_ENV_AMOUNT:
+							filter.env_amount=val;
+							break;
+						case FILTER_ATTACK:
+							filter.env_settings.attack=val*samp_rate/filter_update_frames;
+							break;
+						case FILTER_DECAY:
+							filter.env_settings.decay=val*samp_rate/filter_update_frames;
+							break;
+						case FILTER_SUSTAIN:
+							filter.env_settings.sustain=val*ONE;
+							break;
+						case FILTER_RELEASE:
+							filter.env_settings.release=val*samp_rate/filter_update_frames;
+							break;
+						case FILTER_HOLD:
+							filter.env_settings.hold=(val!=0);
+							break;
+						case FILTER_OFFSET:
+							filter.freqfactor_offset=val;
+							break;
+						case FILTER_RESONANCE:
+							filter.resonance=val;
+							break;
+						case FILTER_TREMOLO:
+							filter.trem_strength=int(val);
+							break;
+						case FILTER_TREM_LFO:
+							if (strval=="snh")
+								filter.trem_lfo=SNH_LFO;
+							else
+							{
+								filter.trem_lfo=int(val);
+								if ((val<0) || (val>=N_LFOS))
+									throw string("invalid value for filter_trem_lfo");
+							}
+							break;
+						case SYNC_FACTOR:
+							sync_factor=val*ONE;
+							break;
+						default:
+							throw string("unknown variable ('"+array+"')");
+					}
+					break;
+
+				case 2: //read how controllers influence parameters
+					p=param_to_enum(array);
+					
+					ind=extract_array_index(var,1);
+					if ( param_needs_index(p) &&  (!((ind>=0) && (ind<n_osc))) )
+						throw string("out of array bounds");
+											
+					parameter_t par;
+					par.par=p;
+
+					if (par.par==UNKNOWN)
+						throw string("unknown variable ('"+array+"')");
+
+					if (par.par==MODULATION)
+					{
+						ind2=extract_array_index(var,2);
+						if (!((ind2>=0) && (ind2<n_osc)))
 							throw string("out of array bounds");
+					}
+
+					par.osc=ind;
+					par.index=ind2;
+
+					terms=extract_formula(strval);
+					for (list<term_t>::iterator it=terms.begin(); it!=terms.end(); it++)
+						if (it->c!=NO_CONT)
+							affect[it->c].insert(par);
+					
+					
+					formula[par]=terms;
+					break;
+				
+				case 3: //read controller default values
+					if (array=="cont")
+					{
+						ind=extract_array_index(var,1);
 						
+						if ((ind<0) || (ind>127))
+							throw string("out of array bounds");
 						
-						switch (p)
-						{
-							case MODULATION:						
-								ind2=extract_array_index(var,2);
-								if (!((ind2>=0) && (ind2<n_osc)))
-									throw string("out of array bounds");
+						if ((val<0) || (val>127))
+							throw string("value out of range");
 							
-								osc[ind].fm_strength[ind2]=val*ONE;
-								break;
-							case OUTPUT:
-								osc[ind].output=val*ONE;
-								break;
-							case WAVEFORM:
-								if (isfloat(strval))
-								{
-									osc[ind].waveform=int(val);
-								}
-								else
-								{
-									size_t pos=strval.find(':');
-									if (pos==string::npos)
-										throw string("expected 'freq:file.wav', found no ':'");
-									
-									float given_freq=atof(strval.substr(0,pos).c_str());									
-									string wavefile=strval.substr(pos+1);
-
-									if (given_freq<=0)
-										throw string("illegal freq specified for custom wave '"+wavefile+"'");
-									
-									osc[ind].custom_wave=new custom_wave_t;
-									read_wave(wavefile.c_str(), osc[ind].custom_wave);
-									osc[ind].custom_wave->samp_rate/=given_freq;
-								}
-								break;
-							case FACTOR:
-								osc[ind].factor=val*ONE;
-								break;
-							case TREMOLO:
-								osc[ind].tremolo_depth=int(val);
-								break;
-							case TREM_LFO:
-								if (strval=="snh")
-									osc[ind].tremolo_lfo=SNH_LFO;
-								else
-								{
-									osc[ind].tremolo_lfo= int(val);
-									if ((val<0) || (val>=N_LFOS))
-										throw string("invalid value for tremolo_lfo");
-								}
-								break;
-							case VIBRATO:
-								osc[ind].vibrato_depth=val;
-								break;
-							case VIB_LFO:
-								if (strval=="snh")
-									osc[ind].vibrato_lfo= SNH_LFO;
-								else
-								{
-									osc[ind].vibrato_lfo= int(val);
-									if ((val<0) || (val>=N_LFOS))
-										throw string("invalid value for vibrato_lfo");
-								}
-								break;
-							case ATTACK:
-								env[ind].attack=val*samp_rate;
-								break;
-							case DECAY:
-								env[ind].decay=val*samp_rate;
-								break;
-							case SUSTAIN:
-								env[ind].sustain=val*ONE;
-								break;
-							case RELEASE:
-								env[ind].release=val*samp_rate;
-								break;
-							case HOLD:
-								env[ind].hold=(val!=0);
-								break;
-							case KSR:
-								osc[ind].ksr=val;
-								break;
-							case KSL:
-								osc[ind].ksl=val;
-								break;
-							case SYNC:
-								osc[ind].sync=(val!=0);
-								break;
-							case FILTER_ENABLED:
-								filter.enabled=(val!=0);
-								break;
-							case FILTER_ENV_AMOUNT:
-								filter.env_amount=val;
-								break;
-							case FILTER_ATTACK:
-								filter.env_settings.attack=val*samp_rate/filter_update_frames;
-								break;
-							case FILTER_DECAY:
-								filter.env_settings.decay=val*samp_rate/filter_update_frames;
-								break;
-							case FILTER_SUSTAIN:
-								filter.env_settings.sustain=val*ONE;
-								break;
-							case FILTER_RELEASE:
-								filter.env_settings.release=val*samp_rate/filter_update_frames;
-								break;
-							case FILTER_HOLD:
-								filter.env_settings.hold=(val!=0);
-								break;
-							case FILTER_OFFSET:
-								filter.freqfactor_offset=val;
-								break;
-							case FILTER_RESONANCE:
-								filter.resonance=val;
-								break;
-							case FILTER_TREMOLO:
-								filter.trem_strength=int(val);
-								break;
-							case FILTER_TREM_LFO:
-								if (strval=="snh")
-									filter.trem_lfo=SNH_LFO;
-								else
-								{
-									filter.trem_lfo=int(val);
-									if ((val<0) || (val>=N_LFOS))
-										throw string("invalid value for filter_trem_lfo");
-								}
-								break;
-							case SYNC_FACTOR:
-								sync_factor=val*ONE;
-								break;
-							default:
-								throw string("unknown variable ('"+array+"')");
-						}
-						break;
-
-					case 2: //read how controllers influence parameters
-						p=param_to_enum(array);
-						
-						ind=extract_array_index(var,1);
-						if ( param_needs_index(p) &&  (!((ind>=0) && (ind<n_osc))) )
-							throw string("out of array bounds");
-												
-						parameter_t par;
-						par.par=p;
-
-						if (par.par==UNKNOWN)
-							throw string("unknown variable ('"+array+"')");
+						controller_default[ind]=val;
+					}
+					else
+						throw string("expected cont, found '"+array+"'");
+					
+					break;
+					
+				case 4: //read velocity-influence over certain params
+					p=param_to_enum(array);
 
-						if (par.par==MODULATION)
-						{
+					ind=extract_array_index(var,1);
+					if ( param_needs_index(p) &&  (!((ind>=0) && (ind<n_osc))) )
+						throw string("out of array bounds");
+					
+					switch(p)
+					{
+						case MODULATION:
 							ind2=extract_array_index(var,2);
 							if (!((ind2>=0) && (ind2<n_osc)))
 								throw string("out of array bounds");
-						}
-
-						par.osc=ind;
-						par.index=ind2;
 
-						terms=extract_formula(strval);
-						for (list<term_t>::iterator it=terms.begin(); it!=terms.end(); it++)
-							if (it->c!=NO_CONT)
-								affect[it->c].insert(par);
-						
-						
-						formula[par]=terms;
-						break;
-					
-					case 3: //read controller default values
-						if (array=="cont")
-						{
-							ind=extract_array_index(var,1);
+							pfactor.fm[ind][ind2]=parse_pfactor(strval);
+							break;
 							
-							if ((ind<0) || (ind>127))
-								throw string("out of array bounds");
+						case OUTPUT:
+							pfactor.out[ind]=parse_pfactor(strval);
+							break;
 							
-							if ((val<0) || (val>127))
-								throw string("value out of range");
-								
-							controller_default[ind]=val;
-						}
-						else
-							throw string("expected cont, found '"+array+"'");
-						
-						break;
-						
-					case 4: //read velocity-influence over certain params
-						p=param_to_enum(array);
-
-						ind=extract_array_index(var,1);
-						if ( param_needs_index(p) &&  (!((ind>=0) && (ind<n_osc))) )
-							throw string("out of array bounds");
-						
-						switch(p)
-						{
-							case MODULATION:
-								ind2=extract_array_index(var,2);
-								if (!((ind2>=0) && (ind2<n_osc)))
-									throw string("out of array bounds");
-
-								pfactor.fm[ind][ind2]=parse_pfactor(strval);
-								break;
-								
-							case OUTPUT:
-								pfactor.out[ind]=parse_pfactor(strval);
-								break;
-								
-							case FILTER_ENV_AMOUNT:
-								pfactor.filter_env=parse_pfactor(strval);
-								break;
-								
-							case FILTER_RESONANCE:
-								pfactor.filter_res=parse_pfactor(strval);
-								break;
-								
-							case FILTER_OFFSET:
-								pfactor.filter_offset=parse_pfactor(strval);
-								break;
-								
-							default:
-								throw string("velocity cannot influence parameter '"+array+"'");
-						
+						case FILTER_ENV_AMOUNT:
+							pfactor.filter_env=parse_pfactor(strval);
+							break;
+							
+						case FILTER_RESONANCE:
+							pfactor.filter_res=parse_pfactor(strval);
+							break;
+							
+						case FILTER_OFFSET:
+							pfactor.filter_offset=parse_pfactor(strval);
+							break;
+							
+						default:
+							throw string("velocity cannot influence parameter '"+array+"'");
+					
 
-				}
-				}
+					}
 			}
 		}
 	}
-	else
-		throw string ("could not open '"+fn+"'");
-}
-
 
-program_t Parser::get_results() const
-{
+		
+		
 	program_t result;
 
 	result.n_osc=n_osc;
@@ -613,6 +620,22 @@ program_t Parser::get_results() const
 	result.sync_factor=sync_factor;
 	
 	result.pfactor=pfactor;
+
+
+
+	//clean up a bit
+	
+	for (int i=0;i<n_osc;i++)
+		delete [] osc[i].fm_strength;
+		
+	delete [] osc;
+	delete [] env;
+
+
+
+
 	
 	return result;
 }
+
+
diff --git a/synth/parser.h b/synth/parser.h
index 192226e..0af3c6a 100644
--- a/synth/parser.h
+++ b/synth/parser.h
@@ -12,36 +12,6 @@
 
 using namespace std;
 
-class Parser
-{
-	public:
-		Parser();
-		~Parser();
-		void parse(string fn);
-		program_t get_results() const;
-		
-	private:
-		void init_stuff();
-		void uninit_stuff();
-		static string extract_array_name(string s);
-		static list<string> extract_terms(string s);
-		static list<string> extract_factors(string s); 
-		static list<term_t> extract_formula(string s);
-		static param_factor_t parse_pfactor(string s);
-		static int extract_array_index(string s, int dim);
-		
-		int n_osc;
-		oscillator_t *osc;
-		env_settings_t *env;
-		set<parameter_t> affect[128];
-		map< parameter_t, list<term_t> > formula;
-		int controller_default[128];
-		filter_params_t filter;
-		
-		pfactor_formula_t pfactor;
-		
-		fixed_t sync_factor;
-};
-
+program_t parse(string fn);
 
 #endif
-- 
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