add lex/yacc test project

3 files changed, 115 insertions, 0 deletions

diff --git a/tests/projects/lex_yacc/src/calc.l b/tests/projects/lex_yacc/src/calc.l
new file mode 100644
index 000000000..37d44dd27
--- /dev/null
+++ b/tests/projects/lex_yacc/src/calc.l
@@ -0,0 +1,27 @@
+%option noyywrap
+
+%{
+#include <stdio.h>
+
+#define YY_DECL int yylex()
+
+#include "calc.tab.h"
+
+%}
+
+%%
+
+[ \t]	; // ignore all whitespace
+[0-9]+\.[0-9]+ 	{yylval.fval = atof(yytext); return T_FLOAT;}
+[0-9]+		{yylval.ival = atoi(yytext); return T_INT;}
+\n		{return T_NEWLINE;}
+"+"		{return T_PLUS;}
+"-"		{return T_MINUS;}
+"*"		{return T_MULTIPLY;}
+"/"		{return T_DIVIDE;}
+"("		{return T_LEFT;}
+")"		{return T_RIGHT;}
+"exit"		{return T_QUIT;}
+"quit"		{return T_QUIT;}
+
+%%
diff --git a/tests/projects/lex_yacc/src/calc.y b/tests/projects/lex_yacc/src/calc.y
new file mode 100644
index 000000000..d7af910dd
--- /dev/null
+++ b/tests/projects/lex_yacc/src/calc.y
@@ -0,0 +1,81 @@
+%{
+
+#include <stdio.h>
+#include <stdlib.h>
+
+extern int yylex();
+extern int yyparse();
+extern FILE* yyin;
+
+void yyerror(const char* s);
+%}
+
+%union {
+	int ival;
+	float fval;
+}
+
+%token<ival> T_INT
+%token<fval> T_FLOAT
+%token T_PLUS T_MINUS T_MULTIPLY T_DIVIDE T_LEFT T_RIGHT
+%token T_NEWLINE T_QUIT
+%left T_PLUS T_MINUS
+%left T_MULTIPLY T_DIVIDE
+
+%type<ival> expression
+%type<fval> mixed_expression
+
+%start calculation
+
+%%
+
+calculation:
+	   | calculation line
+;
+
+line: T_NEWLINE
+    | mixed_expression T_NEWLINE { printf("\tResult: %f\n", $1);}
+    | expression T_NEWLINE { printf("\tResult: %i\n", $1); }
+    | T_QUIT T_NEWLINE { printf("bye!\n"); exit(0); }
+;
+
+mixed_expression: T_FLOAT                 		 { $$ = $1; }
+	  | mixed_expression T_PLUS mixed_expression	 { $$ = $1 + $3; }
+	  | mixed_expression T_MINUS mixed_expression	 { $$ = $1 - $3; }
+	  | mixed_expression T_MULTIPLY mixed_expression { $$ = $1 * $3; }
+	  | mixed_expression T_DIVIDE mixed_expression	 { $$ = $1 / $3; }
+	  | T_LEFT mixed_expression T_RIGHT		 { $$ = $2; }
+	  | expression T_PLUS mixed_expression	 	 { $$ = $1 + $3; }
+	  | expression T_MINUS mixed_expression	 	 { $$ = $1 - $3; }
+	  | expression T_MULTIPLY mixed_expression 	 { $$ = $1 * $3; }
+	  | expression T_DIVIDE mixed_expression	 { $$ = $1 / $3; }
+	  | mixed_expression T_PLUS expression	 	 { $$ = $1 + $3; }
+	  | mixed_expression T_MINUS expression	 	 { $$ = $1 - $3; }
+	  | mixed_expression T_MULTIPLY expression 	 { $$ = $1 * $3; }
+	  | mixed_expression T_DIVIDE expression	 { $$ = $1 / $3; }
+	  | expression T_DIVIDE expression		 { $$ = $1 / (float)$3; }
+;
+
+expression: T_INT				{ $$ = $1; }
+	  | expression T_PLUS expression	{ $$ = $1 + $3; }
+	  | expression T_MINUS expression	{ $$ = $1 - $3; }
+	  | expression T_MULTIPLY expression	{ $$ = $1 * $3; }
+	  | T_LEFT expression T_RIGHT		{ $$ = $2; }
+;
+
+%%
+
+int main() {
+	yyin = stdin;
+
+	do {
+		yyparse();
+	} while(!feof(yyin));
+
+	return 0;
+}
+
+void yyerror(const char* s) {
+	fprintf(stderr, "Parse error: %s\n", s);
+	exit(1);
+}
diff --git a/tests/projects/lex_yacc/xmake.lua b/tests/projects/lex_yacc/xmake.lua
new file mode 100644
index 000000000..21e1fa611
--- /dev/null
+++ b/tests/projects/lex_yacc/xmake.lua
@@ -0,0 +1,7 @@
+
+add_rules("mode.debug", "mode.release")
+
+target("calc")
+    set_kind("binary")
+    add_rules("lex", "yacc")
+    add_files("src/*.l", "src/*.y")