diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/lexer.js | 1 | ||||
| -rw-r--r-- | src/parser.js | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/lexer.js b/src/lexer.js index 5e29e42..85579fb 100644 --- a/src/lexer.js +++ b/src/lexer.js @@ -24,6 +24,7 @@ newLexemeType('+', '\\+') newLexemeType('-', '-') newLexemeType('(', '\\(') newLexemeType(')', '\\)') +newLexemeType('E', 'E') newSkippableLexeme('whitespace', '\\s+') const lex = (expressionString) => { diff --git a/src/parser.js b/src/parser.js index 3437f1a..9479abc 100644 --- a/src/parser.js +++ b/src/parser.js @@ -47,6 +47,14 @@ newSymbol('d', (parser) => { } }) +newSymbol('E', null, 30, (left, parser) => { + return { + type: 'E', + left: left, + right: parser.expression(29) + } +}) + newSymbol('+', null, 20, (left, parser) => { return { type: 'add', |