Parse the source in SCRIPT_LINES__ as array

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65653 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ast.c

@@ -54,6 +54,7 @@ ast_new_internal(rb_ast_t *ast, NODE *node)
 
 VALUE rb_ast_parse_str(VALUE str);
 VALUE rb_ast_parse_file(VALUE path);
+VALUE rb_ast_parse_array(VALUE array);
 
 static VALUE
 ast_parse_new(void)
@@ -134,6 +135,29 @@ rb_ast_parse_file(VALUE path)
     return ast_parse_done(ast);
 }
 
+VALUE
+lex_array(VALUE array, int index)
+{
+    VALUE str = rb_ary_entry(array, index);
+    if (!NIL_P(str)) {
+        StringValue(str);
+        if (!rb_enc_asciicompat(rb_enc_get(str))) {
+            rb_raise(rb_eArgError, "invalid source encoding");
+        }
+    }
+    return str;
+}
+
+VALUE
+rb_ast_parse_array(VALUE array)
+{
+    rb_ast_t *ast = 0;
+
+    array = rb_check_array_type(array);
+    ast = rb_parser_compile_generic(ast_parse_new(), lex_array, Qnil, array, 1);
+    return ast_parse_done(ast);
+}
+
 static VALUE node_children(rb_ast_t*, NODE*);
 
 static VALUE
@@ -197,7 +221,7 @@ rb_ast_s_of(VALUE module, VALUE body)
     path = rb_iseq_path(iseq);
     node_id = iseq->body->location.node_id;
     if (!NIL_P(lines = script_lines(path))) {
-        node = rb_ast_parse_str(rb_ary_join(lines, Qnil));
+        node = rb_ast_parse_array(lines);
     }
     else {
         node = rb_ast_parse_file(path);

node.h

@@ -402,6 +402,7 @@ rb_ast_t *rb_parser_compile_string(VALUE, const char*, VALUE, int);
 rb_ast_t *rb_parser_compile_file(VALUE, const char*, VALUE, int);
 rb_ast_t *rb_parser_compile_string_path(VALUE vparser, VALUE fname, VALUE src, int line);
 rb_ast_t *rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE input, int line);
+rb_ast_t *rb_parser_compile_generic(VALUE vparser, VALUE (*lex_gets)(VALUE, int), VALUE fname, VALUE input, int line);
 
 rb_ast_t *rb_compile_cstr(const char*, const char*, int, int);
 rb_ast_t *rb_compile_string(const char*, VALUE, int);

parse.y

@@ -201,7 +201,10 @@ struct parser_params {
 	const char *pcur;
 	const char *pend;
 	const char *ptok;
-	long gets_ptr;
+	union {
+	    long ptr;
+	    VALUE (*call)(VALUE, int);
+	} gets_;
 	enum lex_state_e state;
 	/* track the nest level of any parens "()[]{}" */
 	int paren_nest;
@@ -4971,14 +4974,14 @@ lex_get_str(struct parser_params *p, VALUE s)
     beg = RSTRING_PTR(s);
     len = RSTRING_LEN(s);
     start = beg;
-    if (p->lex.gets_ptr) {
-	if (len == p->lex.gets_ptr) return Qnil;
-	beg += p->lex.gets_ptr;
-	len -= p->lex.gets_ptr;
+    if (p->lex.gets_.ptr) {
+	if (len == p->lex.gets_.ptr) return Qnil;
+	beg += p->lex.gets_.ptr;
+	len -= p->lex.gets_.ptr;
     }
     end = memchr(beg, '\n', len);
     if (end) len = ++end - beg;
-    p->lex.gets_ptr += len;
+    p->lex.gets_.ptr += len;
     return rb_str_subseq(s, beg - start, len);
 }
 
@@ -5009,7 +5012,7 @@ parser_compile_string(VALUE vparser, VALUE fname, VALUE s, int line)
     TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
 
     p->lex.gets = lex_get_str;
-    p->lex.gets_ptr = 0;
+    p->lex.gets_.ptr = 0;
     p->lex.input = rb_str_new_frozen(s);
     p->lex.pbeg = p->lex.pcur = p->lex.pend = 0;
 
@@ -5085,6 +5088,27 @@ rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE file, int start)
 
     return yycompile(vparser, p, fname, start);
 }
+
+static VALUE
+lex_generic_gets(struct parser_params *p, VALUE input)
+{
+    return (*p->lex.gets_.call)(input, p->line_count);
+}
+
+rb_ast_t*
+rb_parser_compile_generic(VALUE vparser, VALUE (*lex_gets)(VALUE, int), VALUE fname, VALUE input, int start)
+{
+    struct parser_params *p;
+
+    TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
+
+    p->lex.gets = lex_generic_gets;
+    p->lex.gets_.call = lex_gets;
+    p->lex.input = input;
+    p->lex.pbeg = p->lex.pcur = p->lex.pend = 0;
+
+    return yycompile(vparser, p, fname, start);
+}
 #endif  /* !RIPPER */
 
 #define STR_FUNC_ESCAPE 0x01