| # 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]+ |