diff options
Diffstat (limited to 'MoonParser/ast.cpp')
-rw-r--r-- | MoonParser/ast.cpp | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/MoonParser/ast.cpp b/MoonParser/ast.cpp deleted file mode 100644 index 6c86854..0000000 --- a/MoonParser/ast.cpp +++ /dev/null | |||
@@ -1,122 +0,0 @@ | |||
1 | #include <cassert> | ||
2 | #include "ast.hpp" | ||
3 | |||
4 | |||
5 | namespace parserlib { | ||
6 | |||
7 | int ast_type_id = 0; | ||
8 | |||
9 | traversal ast_node::traverse(const std::function<traversal (ast_node*)>& func) { | ||
10 | return func(this); | ||
11 | } | ||
12 | |||
13 | ast_node* ast_node::getByTypeIds(int* begin, int* end) { | ||
14 | ast_node* current = this; | ||
15 | auto it = begin; | ||
16 | while (it != end) { | ||
17 | ast_node* findNode = nullptr; | ||
18 | int type = *it; | ||
19 | current->visitChild([&](ast_node* node) { | ||
20 | if (node->get_type() == type) { | ||
21 | findNode = node; | ||
22 | return true; | ||
23 | } | ||
24 | return false; | ||
25 | }); | ||
26 | if (findNode) { | ||
27 | current = findNode; | ||
28 | } else { | ||
29 | current = nullptr; | ||
30 | break; | ||
31 | } | ||
32 | ++it; | ||
33 | } | ||
34 | return current; | ||
35 | } | ||
36 | |||
37 | bool ast_node::visitChild(const std::function<bool (ast_node*)>&) { | ||
38 | return false; | ||
39 | } | ||
40 | |||
41 | |||
42 | /** Asks all members to construct themselves from the stack. | ||
43 | The members are asked to construct themselves in reverse order. | ||
44 | from a node stack. | ||
45 | @param st stack. | ||
46 | */ | ||
47 | void ast_container::construct(ast_stack &st) { | ||
48 | for(ast_member_vector::reverse_iterator it = m_members.rbegin(); | ||
49 | it != m_members.rend(); | ||
50 | ++it) | ||
51 | { | ||
52 | ast_member* member = *it; | ||
53 | member->construct(st); | ||
54 | } | ||
55 | } | ||
56 | |||
57 | traversal ast_container::traverse(const std::function<traversal (ast_node*)>& func) { | ||
58 | traversal action = func(this); | ||
59 | switch (action) { | ||
60 | case traversal::Stop: return traversal::Stop; | ||
61 | case traversal::Return: return traversal::Continue; | ||
62 | default: break; | ||
63 | } | ||
64 | const auto& members = this->members(); | ||
65 | for (auto member : members) { | ||
66 | if (_ast_ptr* ptr = ast_cast<_ast_ptr>(member)) { | ||
67 | if (ptr->get() && ptr->get()->traverse(func) == traversal::Stop) { | ||
68 | return traversal::Stop; | ||
69 | } | ||
70 | } else if (_ast_list* list = ast_cast<_ast_list>(member)) { | ||
71 | for (auto obj : list->objects()) { | ||
72 | if (obj->traverse(func) == traversal::Stop) { | ||
73 | return traversal::Stop; | ||
74 | } | ||
75 | } | ||
76 | } | ||
77 | } | ||
78 | return traversal::Continue; | ||
79 | } | ||
80 | |||
81 | bool ast_container::visitChild(const std::function<bool (ast_node*)>& func) { | ||
82 | const auto& members = this->members(); | ||
83 | for (auto member : members) { | ||
84 | if (_ast_ptr* ptr = ast_cast<_ast_ptr>(member)) { | ||
85 | if (ptr->get()) { | ||
86 | if (func(ptr->get())) return true; | ||
87 | } | ||
88 | } else if (_ast_list* list = ast_cast<_ast_list>(member)) { | ||
89 | for (auto obj : list->objects()) { | ||
90 | if (obj) { | ||
91 | if (func(obj)) return true; | ||
92 | } | ||
93 | } | ||
94 | } | ||
95 | } | ||
96 | return false; | ||
97 | } | ||
98 | |||
99 | |||
100 | /** parses the given input. | ||
101 | @param i input. | ||
102 | @param g root rule of grammar. | ||
103 | @param el list of errors. | ||
104 | @param ud user data, passed to the parse procedures. | ||
105 | @return pointer to ast node created, or null if there was an error. | ||
106 | The return object must be deleted by the caller. | ||
107 | */ | ||
108 | ast_node* _parse(input &i, rule &g, error_list &el, void* ud) { | ||
109 | ast_stack st; | ||
110 | if (!parse(i, g, el, &st, ud)) { | ||
111 | for (auto node : st) { | ||
112 | delete node; | ||
113 | } | ||
114 | st.clear(); | ||
115 | return nullptr; | ||
116 | } | ||
117 | assert(st.size() == 1); | ||
118 | return st.front(); | ||
119 | } | ||
120 | |||
121 | |||
122 | } //namespace parserlib | ||