diff options
Diffstat (limited to 'main/subexast.go')
-rw-r--r-- | main/subexast.go | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/main/subexast.go b/main/subexast.go index 7e2f33c..54cc5fe 100644 --- a/main/subexast.go +++ b/main/subexast.go @@ -115,3 +115,39 @@ func (ast SubexASTOutput) compileWith(next SubexState) SubexState { next: next, } } + +type SubexASTTry struct { + content SubexAST +} +func (ast SubexASTTry) compileWith(next SubexState) SubexState { + return SubexGroupState { + ast.content.compileWith(next), + next, + } +} + +type SubexASTMaybe struct { + content SubexAST +} +func (ast SubexASTMaybe) compileWith(next SubexState) SubexState { + return SubexGroupState { + next, + ast.content.compileWith(next), + } +} + +type SubexASTJoin struct { + content, delimiter SubexAST +} +func (ast SubexASTJoin) compileWith(next SubexState) SubexState { + afterContentState := &SubexGroupState { + nil, + next, + } + manyContentsState := ast.content.compileWith(afterContentState) + afterContentState.first = ast.delimiter.compileWith(manyContentsState) + return SubexGroupState { + manyContentsState, + next, + } +} |