From 392fb37ed0ff986d2c6440a3e759bb9360e1b902 Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Sat, 6 Aug 2016 17:39:06 +0200
Subject: Make debug prints conditional

---
 parser.c | 36 ++++++++++++++++++++++++------------
 1 file changed, 24 insertions(+), 12 deletions(-)

diff --git a/parser.c b/parser.c
index 2827211..857b11d 100644
--- a/parser.c
+++ b/parser.c
@@ -11,6 +11,16 @@
 #include "parser.h"
 
 
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(...) __VA_ARGS__
+#else
+#define DBG(...)
+#endif
+#define DBGF(...) DBG(fprintf(stderr,__VA_ARGS__))
+
+
 #define NOT_IMPLEMENTED false
 
 
@@ -151,6 +161,7 @@ static Token nexttoken(const char **sourcep,bool expectop){
 }
 
 
+#ifdef DEBUG
 static void printtoken(FILE *stream,Token tok,const char *msg){
 	const char *type;
 	switch(tok.type){
@@ -173,6 +184,7 @@ static void printtoken(FILE *stream,Token tok,const char *msg){
 		fprintf(stream,"(%s) Token: %s (null)\n",msg,type);
 	}
 }
+#endif
 
 
 static AST* parseexpr(const char *source,int *reslen,int minprec,int maxprec);
@@ -180,7 +192,7 @@ static AST* parseexpr(const char *source,int *reslen,int minprec,int maxprec);
 static AST* parseterm(const char *source,int *reslen){
 	const char *origsource=source;
 	const Token tok=nexttoken(&source,false);
-	printtoken(stderr,tok,"parseterm");
+	DBG(printtoken(stderr,tok,"parseterm"));
 	AST *node;
 	switch(tok.type){
 		case TT_NUM:{
@@ -246,7 +258,7 @@ static AST* parseterm(const char *source,int *reslen){
 			const char *tempsource=source;
 			Token next=nexttoken(&source,false);
 			if(next.len==1&&next.str[0]=='('){
-				printtoken(stderr,next,"function ");
+				DBG(printtoken(stderr,next,"function "));
 				AST **args=malloc(sizeof(AST*));
 				int nargs=0;
 				int len;
@@ -262,14 +274,14 @@ static AST* parseterm(const char *source,int *reslen){
 						source+=len;
 						args[nargs++]=arg;
 						next=nexttoken(&source,false);
-						printtoken(stderr,next,"func-sep ");
+						DBG(printtoken(stderr,next,"func-sep "));
 						if(next.type!=TT_SYM||next.len!=1||(next.str[0]!=','&&next.str[0]!=')')){
 							FREEARGSRETNULL;
 						}
 						if(next.str[0]==')')break;
 					}
 				} else {
-					printtoken(stderr,next,"func-end ");
+					DBG(printtoken(stderr,next,"func-end "));
 					source=src;
 				}
 				node=malloc(sizeof(AST));
@@ -304,7 +316,7 @@ static AST* parseterm(const char *source,int *reslen){
 				if(!node)return NULL;
 				source+=len;
 				Token aftertok=nexttoken(&source,false);
-				printtoken(stderr,aftertok,"braceclose");
+				DBG(printtoken(stderr,aftertok,"braceclose"));
 				if(aftertok.type!=TT_SYM||aftertok.len!=1||aftertok.str[0]!=')'){
 					ast_free(node);
 					return NULL;
@@ -357,14 +369,14 @@ static AST* parseexpr_(const char *source,int *reslen,int minprec,int maxprec){
 	while(true){
 		const char *beforeop=source;
 		Token tok=nexttoken(&source,true);
-		printtoken(stderr,tok,"parseEXPR");
+		DBG(printtoken(stderr,tok,"parseEXPR"));
 		if(tok.type==TT_ENDSTMT){
-			fprintf(stderr,"  (token undo)\n");
+			DBGF("  (token undo)\n");
 			source=beforeop;
 			break;
 		}
 		if(tok.type==TT_SYM&&tok.len==1&&(tok.str[0]==')'||tok.str[0]==',')){
-			fprintf(stderr,"  (token undo)\n");
+			DBGF("  (token undo)\n");
 			source=beforeop;
 			break;
 		}
@@ -374,7 +386,7 @@ static AST* parseexpr_(const char *source,int *reslen,int minprec,int maxprec){
 		}
 		int prec=precedence_len(tok.str,tok.len);
 		if(prec<minprec){
-			fprintf(stderr,"  (token undo)\n");
+			DBGF("  (token undo)\n");
 			source=beforeop;
 			break;
 		}
@@ -416,11 +428,11 @@ static AST* parseexpr_(const char *source,int *reslen,int minprec,int maxprec){
 
 static AST* parseexpr(const char *source,int *reslen,int minprec,int maxprec){
 	static int depth=0;
-	fprintf(stderr,"\x1B[32mEXPR ENTER >>> (%d)\x1B[0m\n",depth);
+	DBGF("\x1B[32mEXPR ENTER >>> (%d)\x1B[0m\n",depth);
 	depth++;
 	AST *r=parseexpr_(source,reslen,minprec,maxprec);
 	depth--;
-	fprintf(stderr,"\x1B[32mEXPR LEAVE <<< (%d)\x1B[0m\n",depth);
+	DBGF("\x1B[32mEXPR LEAVE <<< (%d)\x1B[0m\n",depth);
 	return r;
 }
 
@@ -488,7 +500,7 @@ AST* parse(const char *source,char **errmsg){
 		cursor+=reslen;
 		const char *src=source+cursor;
 		Token tok=nexttoken(&src,false);
-		printtoken(stderr,tok,"parse    ");
+		DBG(printtoken(stderr,tok,"parse    "));
 		if(tok.type!=TT_ENDSTMT){
 			ast_free(bl);
 			*errmsg=reportparseerror(source);
-- 
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