move C code out of parser.y to parser.c

src/parser/parser.c

@@ -0,0 +1,30 @@
+#include "parser.h"
+#include <stdio.h>
+
+extern FILE * yyin;
+
+static const char * input_fname;
+
+void parse(const char * filename)
+{
+    input_fname = filename;
+    yyin = fopen(filename, "r");
+    if (yyin == NULL)
+    {
+        fprintf(stderr, "Error opening \"%s\"\n", filename);
+        return;
+    }
+    if (yyparse() != 0)
+    {
+        fprintf(stderr, "Parsing error\n");
+        return;
+    }
+}
+
+void handle_parse_error(const char * str, const YYLTYPE * yylloc)
+{
+    fprintf(stderr, "error: %s (line %d, column %d)\n",
+            str,
+            yylloc->first_line,
+            yylloc->first_column);
+}

src/parser/parser.h

@@ -2,9 +2,11 @@
 #define PARSER_H
 
 #include "Node.h"
+#include "parser.tab.h"
 
 #define YYSTYPE Node *
 
 void parse(const char * filename);
+void handle_parse_error(const char * str, const YYLTYPE * yylloc);
 
 #endif

src/parser/parser.l

@@ -4,7 +4,6 @@
 %{
 
 #include "parser.h"
-#include "parser.tab.h"
 #include "String.h"
 #include <stdlib.h>
 #include "Node.h"

src/parser/parser.y

@@ -2,13 +2,10 @@
 
 #include <stdio.h>
 #include "parser.h"
-#include "parser.tab.h"
 
-#define yyerror(msg) handle_error(msg, &yyloc)
+#define yyerror(msg) handle_parse_error(msg, &yyloc)
 
-extern FILE * yyin;
 int yylex(YYSTYPE *, YYLTYPE *);
-static void handle_error(const char * str, const YYLTYPE * yylloc);
 
 %}
 
@@ -452,26 +449,3 @@ function_definition: declarator declaration_list compound_statement
                    | declaration_specifiers declarator compound_statement
                    ;
 %%
-
-static void handle_error(const char * str, const YYLTYPE * yylloc)
-{
-    fprintf(stderr, "error: %s (line %d, column %d)\n",
-            str,
-            yylloc->first_line,
-            yylloc->first_column);
-}
-
-void parse(const char * filename)
-{
-    yyin = fopen(filename, "r");
-    if (yyin == NULL)
-    {
-        fprintf(stderr, "Error opening \"%s\"\n", filename);
-        return;
-    }
-    if (yyparse() != 0)
-    {
-        fprintf(stderr, "Parsing error\n");
-        return;
-    }
-}