Mercurial Hosting > luan
changeset 1574:f118ead273a1
LuanParser.longString
author | Franklin Schmidt <fschmidt@gmail.com> |
---|---|
date | Sun, 20 Dec 2020 13:17:27 -0700 |
parents | c6b50b7b958c |
children | 0160650180bc |
files | src/luan/modules/parsers/LuanParser.java |
diffstat | 1 files changed, 43 insertions(+), 0 deletions(-) [+] |
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--- a/src/luan/modules/parsers/LuanParser.java Sat Dec 12 21:01:04 2020 -0700 +++ b/src/luan/modules/parsers/LuanParser.java Sun Dec 20 13:17:27 2020 -0700 @@ -62,6 +62,17 @@ } private String string() throws ParseException { + String s; + s = quotedString(); + if( s != null ) + return s; + s = longString(); + if( s != null ) + return s; + return null; + } + + private String quotedString() throws ParseException { parser.begin(); if( !parser.match('"') ) return parser.failure(null); @@ -123,6 +134,38 @@ throw exception("unclosed string"); } + private String longString() throws ParseException { + parser.begin(); + if( !parser.match('[') ) + return parser.failure(null); + int start = parser.currentIndex(); + while( parser.match('=') ); + int nEquals = parser.currentIndex() - start; + if( !parser.match('[') ) + return parser.failure(null); + endOfLine(); + start = parser.currentIndex(); + while( !longBracketsEnd(nEquals) ) { + if( !(endOfLine() || parser.anyChar()) ) + throw exception("Unclosed long string"); + } + String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 ); + return parser.success(s); + } + + private boolean longBracketsEnd(int nEquals) { + parser.begin(); + if( !parser.match(']') ) + return parser.failure(); + while( nEquals-- > 0 ) { + if( !parser.match('=') ) + return parser.failure(); + } + if( !parser.match(']') ) + return parser.failure(); + return parser.success(); + } + private Number number() { parser.begin(); if( parser.match("double") ) {