From 785f598db1da0406416cd6f184d929112bdd0e80 Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Sun, 17 Apr 2022 15:21:23 -0400
Subject: now multiplicationish things

---
 expr.l | 26 +++++++++++++-------------
 expr.y | 49 ++++++++++++++++++++++++++++++++++++++-----------
 2 files changed, 51 insertions(+), 24 deletions(-)

diff --git a/expr.l b/expr.l
index d6aa239..57b3de2 100644
--- a/expr.l
+++ b/expr.l
@@ -17,22 +17,22 @@ DIGIT [0-9]
 
 %%
 
-"|"	return OR;
-"&"	return AND;
-"="	return COMPARISON;
-">"	return COMPARISON;
-">="	return COMPARISON;
-"<"	return COMPARISON;
-"<="	return COMPARISON;
-"!="	return COMPARISON;
+"|"	return '|';
+"&"	return '&';
+"="	return '=';
+">"	return '>';
+">="	return GE;
+"<"	return '<';
+"<="	return LE;
+"!="	return NE;
 "+"	return '+';
-"-"	return '-';;
-"*"	return MULTIPLICATION;
-"/"	return MULTIPLICATION;
-"%"	return MULTIPLICATION;
+"-"	return '-';
+"*"	return '*';
+"/"	return '/';
+"%"	return '%';
 "("	return '(';
 ")"	return ')';
-":"	return MATCH;
+":"	return ':';
 {DIGIT}+	{ yylval.u.i = atoi(yytext); return yylval.type = INTEGER; }
 -{DIGIT}+	{ yylval.u.i = atoi(yytext); return yylval.type = INTEGER; }
 .+		{ yylval.u.s = strdup(yytext); return yylval.type = STRING; }
diff --git a/expr.y b/expr.y
index 1060e27..785b004 100644
--- a/expr.y
+++ b/expr.y
@@ -12,9 +12,12 @@ static void breakpoint(void) { }
 %token INTEGER
 %token STRING
 %token '(' ')'
-%left MATCH MULTIPLICATION 
+%left ':'
+%left '*' '/' '%'
 %left '+' '-'
-%left COMPARISON AND OR
+%left '=' '<' '>' LE GE NE
+%left '&'
+%left '|'
 
 %start expr
 
@@ -27,15 +30,25 @@ expr	: STRING {
 	}
 
 	| '(' expr ')' {
-		printf("a parenthesized expression\n");
 	}
 
-	| expr MATCH expr {
-		printf("match two\n");
+	| expr ':' expr {
+		printf("match\n");
 	}
 
-	| expr MULTIPLICATION expr {
-		printf("multiplicationish\n");
+	| expr '*' expr {
+		$$.u.i = $1.u.i * $3.u.i;
+		printf("%d\n", $$.u.i);
+	}
+
+	| expr '/' expr {
+		$$.u.i = $1.u.i / $3.u.i;
+		printf("%d\n", $$.u.i);
+	}
+
+	| expr '%' expr {
+		$$.u.i = $1.u.i % $3.u.i;
+		printf("%d\n", $$.u.i);
 	}
 
 	| expr '+' expr {
@@ -48,15 +61,29 @@ expr	: STRING {
 		printf("%d\n", $$.u.i);
 	}
 
-	| expr COMPARISON expr {
-		printf("compare\n");
+	| expr '=' expr {
+	}
+
+	| expr NE expr {
+	}
+
+	| expr '<' expr {
+	}
+
+	| expr LE expr {
+	}
+
+	| expr '>' expr {
+	}
+
+	| expr GE expr {
 	}
 
-	| expr AND expr {
+	| expr '&' expr {
 		printf("and\n");
 	}
 
-	| expr OR expr {
+	| expr '|' expr {
 		printf("or\n");
 	}
 	;
-- 
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