9 // convert value from C++ side to C-API
10 union Sass_Value* ast_node_to_sass_value (const Expression_Ptr val)
12 if (val->concrete_type() == Expression::NUMBER)
14 Number_Ptr_Const res = Cast<Number>(val);
15 return sass_make_number(res->value(), res->unit().c_str());
17 else if (val->concrete_type() == Expression::COLOR)
19 Color_Ptr_Const col = Cast<Color>(val);
20 return sass_make_color(col->r(), col->g(), col->b(), col->a());
22 else if (val->concrete_type() == Expression::LIST)
24 List_Ptr_Const l = Cast<List>(val);
25 union Sass_Value* list = sass_make_list(l->size(), l->separator(), l->is_bracketed());
26 for (size_t i = 0, L = l->length(); i < L; ++i) {
27 Expression_Obj obj = l->at(i);
28 auto val = ast_node_to_sass_value(obj);
29 sass_list_set_value(list, i, val);
33 else if (val->concrete_type() == Expression::MAP)
35 Map_Ptr_Const m = Cast<Map>(val);
36 union Sass_Value* map = sass_make_map(m->length());
37 size_t i = 0; for (Expression_Obj key : m->keys()) {
38 sass_map_set_key(map, i, ast_node_to_sass_value(key));
39 sass_map_set_value(map, i, ast_node_to_sass_value(m->at(key)));
44 else if (val->concrete_type() == Expression::NULL_VAL)
46 return sass_make_null();
48 else if (val->concrete_type() == Expression::BOOLEAN)
50 Boolean_Ptr_Const res = Cast<Boolean>(val);
51 return sass_make_boolean(res->value());
53 else if (val->concrete_type() == Expression::STRING)
55 if (String_Quoted_Ptr_Const qstr = Cast<String_Quoted>(val))
57 return sass_make_qstring(qstr->value().c_str());
59 else if (String_Constant_Ptr_Const cstr = Cast<String_Constant>(val))
61 return sass_make_string(cstr->value().c_str());
64 return sass_make_error("unknown sass value type");
67 // convert value from C-API to C++ side
68 Value_Ptr sass_value_to_ast_node (const union Sass_Value* val)
70 switch (sass_value_get_tag(val)) {
72 return SASS_MEMORY_NEW(Number,
73 ParserState("[C-VALUE]"),
74 sass_number_get_value(val),
75 sass_number_get_unit(val));
78 return SASS_MEMORY_NEW(Boolean,
79 ParserState("[C-VALUE]"),
80 sass_boolean_get_value(val));
83 return SASS_MEMORY_NEW(Color,
84 ParserState("[C-VALUE]"),
85 sass_color_get_r(val),
86 sass_color_get_g(val),
87 sass_color_get_b(val),
88 sass_color_get_a(val));
91 if (sass_string_is_quoted(val)) {
92 return SASS_MEMORY_NEW(String_Quoted,
93 ParserState("[C-VALUE]"),
94 sass_string_get_value(val));
96 return SASS_MEMORY_NEW(String_Constant,
97 ParserState("[C-VALUE]"),
98 sass_string_get_value(val));
102 List_Ptr l = SASS_MEMORY_NEW(List,
103 ParserState("[C-VALUE]"),
104 sass_list_get_length(val),
105 sass_list_get_separator(val));
106 for (size_t i = 0, L = sass_list_get_length(val); i < L; ++i) {
107 l->append(sass_value_to_ast_node(sass_list_get_value(val, i)));
109 l->is_bracketed(sass_list_get_is_bracketed(val));
114 Map_Ptr m = SASS_MEMORY_NEW(Map, ParserState("[C-VALUE]"));
115 for (size_t i = 0, L = sass_map_get_length(val); i < L; ++i) {
116 *m << std::make_pair(
117 sass_value_to_ast_node(sass_map_get_key(val, i)),
118 sass_value_to_ast_node(sass_map_get_value(val, i)));
124 return SASS_MEMORY_NEW(Null, ParserState("[C-VALUE]"));
127 return SASS_MEMORY_NEW(Custom_Error,
128 ParserState("[C-VALUE]"),
129 sass_error_get_message(val));
132 return SASS_MEMORY_NEW(Custom_Warning,
133 ParserState("[C-VALUE]"),
134 sass_warning_get_message(val));