74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
// This file is distributed under the BSD License.
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// See LICENSE.TXT for details.
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#include <utility>
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#include "langkit_lexer.hpp"
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#include "langkit_parser.hpp"
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std::pair<Token_Iterator, bool> String_Rule(Token_Iterator iter, Token_Iterator end, TokenPtr parent, const std::string &val, bool keep) {
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if (*iter != *end) {
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if ((*iter)->text == val) {
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if (keep) {
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parent->children.push_back(*iter);
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}
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return std::pair<Token_Iterator, bool>(++iter, true);
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}
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}
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return std::pair<Token_Iterator, bool>(iter, false);
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}
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std::pair<Token_Iterator, bool> Type_Rule(Token_Iterator iter, Token_Iterator end, TokenPtr parent, const int val, bool keep) {
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if (*iter != *end) {
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if ((*iter)->identifier == val) {
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if (keep) {
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parent->children.push_back(*iter);
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}
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return std::pair<Token_Iterator, bool>(++iter, true);
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}
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}
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return std::pair<Token_Iterator, bool>(iter, false);
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}
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std::pair<Token_Iterator, bool> Or_Rule(Token_Iterator iter, Token_Iterator end, TokenPtr parent, const Rule &lhs, const Rule &rhs, bool keep, int new_id) {
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Token_Iterator new_iter;
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if (*iter != *end) {
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new_iter = lhs.rule(iter, end, parent).first;
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if (new_iter != iter) {
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return std::pair<Token_Iterator, bool>(new_iter, true);
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}
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else {
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new_iter = rhs.rule(iter, end, parent).first;
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if (new_iter != iter) {
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return std::pair<Token_Iterator, bool>(new_iter, true);
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}
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}
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}
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return std::pair<Token_Iterator, bool>(iter, false);
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}
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std::pair<Token_Iterator, bool> And_Rule(Token_Iterator iter, Token_Iterator end, TokenPtr parent, const Rule &lhs, const Rule &rhs, bool keep, int new_id) {
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Token_Iterator lhs_iter, rhs_iter;
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if (*iter != *end) {
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lhs_iter = lhs.rule(iter, end, parent).first;
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if (lhs_iter != iter) {
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rhs_iter = rhs.rule(iter, end, parent).first;
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if (rhs_iter != iter) {
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return std::pair<Token_Iterator, bool>(rhs_iter, true);
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}
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}
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}
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return std::pair<Token_Iterator, bool>(iter, false);
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}
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std::pair<Token_Iterator, bool> Rule::operator()(Token_Iterator iter, Token_Iterator end, TokenPtr parent) {
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return this->rule(iter, end, parent);
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}
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