| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #pragma once |
| |
| #include "Grammar.h" |
| |
| /** |
| * The GrammarNewBuiltin() function creates the grammar shown below, which is based on the one from |
| * Ford's original PEG paper. |
| * |
| * Grammar : Spacing Definition+ EndOfFile; |
| * Definition : Identifier COLON Expression SEMI; |
| * Expression : Sequence (BAR Sequence)*; |
| * Sequence : Prefix*; |
| * Prefix : (AND | NOT)? Suffix; |
| * Suffix : Primary (QUESTION | STAR | PLUS)?; |
| * Primary : Identifier !COLON |
| * | DOLLAR OPEN Expression CLOSE |
| * | DOLLAR Identifier OPEN Expression CLOSE |
| * | OPEN Expression CLOSE |
| * | Literal |
| * | Class |
| * | DOT; |
| * Identifier : $(IdentStart IdentCont*) Spacing; |
| * IdentStart : [a-zA-Z_]; |
| * IdentCont : IdentStart |
| * | [0-9]; |
| * Literal : ['] (!['] Char)* ['] Spacing |
| * | ["] (!["] Char)* ["] Spacing; |
| * Class : "[" (!"]" Range)* "]" Spacing; |
| * Range : Char "-" Char |
| * | Char; |
| * Char : "\\" [nrt'"\[\]\\] |
| * | "\\" [0-2] [0-7] [0-7] |
| * | "\\" [0-7] [0-7]? |
| * | !"\\" .; |
| * COLON : ":" Spacing; |
| * SEMI : ";" Spacing; |
| * BAR : "|" Spacing; |
| * AND : "&" Spacing; |
| * NOT : "!" Spacing; |
| * QUESTION : "?" Spacing; |
| * STAR : "*" Spacing; |
| * PLUS : "+" Spacing; |
| * OPEN : "(" Spacing; |
| * CLOSE : ")" Spacing; |
| * DOT : "." Spacing; |
| * DOLLAR : "$" Spacing; |
| * Spacing : $((Space | Comment)*); |
| * Comment : "#" (!EndOfLine .)* EndOfLine; |
| * Space : " " |
| * | "\t" |
| * | EndOfLine; |
| * EndOfLine : "\r\n" |
| * | "\n" |
| * | "\r"; |
| * EndOfFile : !.; |
| */ |
| Grammar *GrammarNewBuiltin(void); |
