diff options
Diffstat (limited to 'src/main/java/pl/edu/mimuw/cloudatlas/interpreter/EnvironmentRow.java')
-rw-r--r-- | src/main/java/pl/edu/mimuw/cloudatlas/interpreter/EnvironmentRow.java | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/EnvironmentRow.java b/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/EnvironmentRow.java new file mode 100644 index 0000000..76a9cf2 --- /dev/null +++ b/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/EnvironmentRow.java @@ -0,0 +1,28 @@ +package pl.edu.mimuw.cloudatlas.interpreter; + +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import pl.edu.mimuw.cloudatlas.model.ValueNull; + +class EnvironmentRow extends Environment { + private final TableRow row; + private final Map<String, Integer> columns = new HashMap<String, Integer>(); + + public EnvironmentRow(TableRow row, List<String> columns) { + this.row = row; + int i = 0; + for(String c : columns) + this.columns.put(c, i++); + } + + public Result getIdent(String ident) { + try { + return new ResultSingle(row.getIth(columns.get(ident))); + } catch(NullPointerException exception) { + return new ResultSingle(ValueNull.getInstance()); + } + } +} + |