diff options
Diffstat (limited to 'core/trygvis')
-rw-r--r-- | core/trygvis/antlr.h | 67 | ||||
-rw-r--r-- | core/trygvis/string_utils.h | 25 |
2 files changed, 92 insertions, 0 deletions
diff --git a/core/trygvis/antlr.h b/core/trygvis/antlr.h new file mode 100644 index 0000000..f5656ea --- /dev/null +++ b/core/trygvis/antlr.h @@ -0,0 +1,67 @@ +#pragma once + +#include "antlr4-runtime.h" + +namespace trygvis { +namespace antlr { + +// This namespace is shared copied code + +using ParseTree = antlr4::tree::ParseTree; + +class MissingParseTreeProperty : public std::out_of_range { +public: + explicit MissingParseTreeProperty(const std::string &what) : out_of_range(what) { } +}; + +template<typename V, bool debug = false> +class ParseTreeProperty { +public: + virtual V get(Ref<ParseTree> node) { + return get(node.get()); + } + + virtual V get(ParseTree *const node) { + if (!debug) { + return _annotations.at(node); + } + + try { +// cerr << "node = " << node->getText() << endl; + return _annotations.at(node); + } catch (std::out_of_range &e) { + std::cerr << "get(" << node << "), text=" << node->getText() << std::endl; + std::stringstream buf; + buf << "out of range: " << node << ", text=" << node->getText(); + auto msg = buf.str(); + std::cerr << msg << std::endl; + throw MissingParseTreeProperty(msg); + } + } + + virtual void put(ParseTree *const node, V value) { + if (debug) { + std::cerr << "put(" << node << ", " << value << "), text: " << node->getText() << std::endl; + } + _annotations[node] = value; + } + + virtual V removeFrom(ParseTree *const node) { + auto it = _annotations.find(node); + + if (it == _annotations.end()) { + throw MissingParseTreeProperty(node->getText()); + } + + return it->second; + } + +protected: + std::map<ParseTree *, V> _annotations; + +private: +}; + +} // namespace antlr + +} diff --git a/core/trygvis/string_utils.h b/core/trygvis/string_utils.h new file mode 100644 index 0000000..2f2a7a5 --- /dev/null +++ b/core/trygvis/string_utils.h @@ -0,0 +1,25 @@ +#pragma once + +#include <string> + +namespace trygvis { +namespace string_utils { + +/** + * Check if a starts with b. + */ +__attribute__((unused)) +static bool startsWith(const std::string &a, const std::string &b) { + return b.length() <= a.length() && a.compare(0, b.length(), b) == 0; +} + +/** + * Check if a ends with b. + */ +__attribute__((unused)) +static bool endsWith(const std::string &a, const std::string &b) { + return b.length() <= a.length() && a.compare(a.length() - b.length(), b.length(), b) == 0; +} + +} // namespace string_utils +} // namespace trygvis |