| # Copyright 2019 The BoringSSL Authors |
| # |
| # Licensed 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 |
| # |
| # https://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. |
| |
| package main |
| |
| type Statement Peg {} |
| |
| Statement <- WS? (Assignment / Action / Expression) WS? !. |
| Assignment <- Variable WS? '=' WS? Expression |
| Variable <- [a-zA-Z_][a-zA-Z0-9_]* |
| Expression <- (StringLiteral / Indexing / Search / Variable) |
| StringLiteral <- '"' QuotedText '"' |
| QuotedText <- (EscapedChar / [^\\"])* |
| EscapedChar <- '\\' [\\n"] |
| Indexing <- Variable ('[' Index ']')+ |
| Index <- [0-9a-z]+ |
| Search <- Variable '[' WS? 'where' WS Query ']' |
| Action <- Expression '.' Command |
| Command <- Function '(' Args? ')' |
| Function <- [a-zA-Z]+ |
| Args <- StringLiteral (WS? ',' WS? Args) |
| Query <- Conjunctions (WS? '||' WS? Conjunctions)? |
| Conjunctions <- Conjunction (WS? '&&' WS? Conjunctions)? |
| Conjunction <- Field WS? Relation WS? StringLiteral |
| Field <- [a-z][a-zA-Z0-9]* |
| Relation <- ('==' / '!=' / 'contains' / 'startsWith' / 'endsWith') |
| |
| WS <- [ \t]+ |
