[tests] Add test dir for regression testing of generation of cxref db

tests/generate_cxrefs/Makefile

@@ -0,0 +1,19 @@
+include ../Makefile.boilerplate
+
+COMMAND = ../../src/c-xref
+ARGUMENTS = -xrefactory-II -create -errors -xrefrc .c-xrefrc -p $(CURDIR) -o output.tmp src
+
+$(TEST): c_xrefrc_for_single_cxref_file
+	rm CXrefs
+	$(COMMAND) $(ARGUMENTS) | grep -v progress > output
+	cat CXrefs >> output
+	echo "<sync>" > expected
+	cat expected.cxrefs >> expected
+	$(VERIFY)
+
+c_xrefrc_for_single_cxref_file: .c-xrefrc
+ifeq ($(shell uname), Darwin)
+	sed -i '' 's/refnum=10/refnum=1/' .c-xrefrc
+else
+	sed -i 's/refnum=10/refnum=1/' .c-xrefrc
+endif

tests/generate_cxrefs/src/ast.h

@@ -0,0 +1,92 @@
+#ifndef AST_INCLUDED
+#define AST_INCLUDED
+
+#include "symbol.h"
+#include "id.h"
+#include "proto.h"              /* Because some AST nodes need types */
+
+
+/* **************     parse tree with positions    *********** */
+
+// The following structures are used in the parsers, they always
+// contain fields for begin and end position of parse tree
+// node and additional 'data' for semantic actions.
+
+typedef struct {
+    struct position begin, end;
+    int             data;
+} Ast_int;
+typedef struct {
+    struct position begin, end;
+    unsigned        data;
+} Ast_unsigned;
+typedef struct {
+    struct position begin, end;
+    struct symbol  *data;
+} Ast_symbol;
+typedef struct {
+    struct position begin, end;
+    struct symbolList *data;
+} Ast_symbolList;
+typedef struct {
+    struct position begin, end;
+    struct typeModifier *data;
+} Ast_typeModifiers;
+typedef struct {
+    struct position begin, end;
+    struct typeModifierList *data;
+} Ast_typeModifiersList;
+typedef struct {
+    struct position begin, end;
+    struct stackFrame *data;
+} Ast_frameAllocation;
+typedef struct {
+    struct position begin, end;
+    Id             *data;
+} Ast_id;
+typedef struct {
+    struct position begin, end;
+    struct idList  *data;
+} Ast_idList;
+typedef struct {
+    struct position begin, end;
+    struct expressionTokenType data;
+} Ast_expressionTokenType;
+typedef struct {
+    struct position begin, end;
+    struct nestedConstrTokenType data;
+} Ast_nestedConstrTokenType;
+typedef struct {
+    struct position begin, end;
+    struct intPair  data;
+} Ast_intPair;
+typedef struct {
+    struct position begin, end;
+    struct whileExtractData *data;
+} Ast_whileExtractData;
+typedef struct {
+    struct position begin, end;
+    struct position data;
+} Ast_position;
+typedef struct {
+    struct position begin, end;
+    struct unsignedPositionPair data;
+} Ast_unsignedPositionPair;
+typedef struct {
+    struct position begin, end;
+    struct symbolPositionPair data;
+} Ast_symbolPositionPair;
+typedef struct {
+    struct position begin, end;
+    struct symbolPositionListPair data;
+} Ast_symbolPositionListPair;
+typedef struct {
+    struct position begin, end;
+    struct positionList *data;
+} Ast_positionList;
+typedef struct {
+    struct position begin, end;
+    struct typeModifiersListPositionListPair data;
+} Ast_typeModifiersListPositionListPair;
+
+#endif

tests/generate_cxrefs/src/c_parser.h

@@ -0,0 +1,15 @@
+/*
+
+  External declarations from c_parser-"module".
+
+*/
+
+#ifndef C_PARSER_H_INCLUDED
+#define C_PARSER_H_INCLUDED
+
+#include "proto.h"
+
+extern int c_yyparse();
+extern void makeCCompletions(char *s, int len, Position *pos);
+
+#endif