[FLEX-35341] Compiler errors for invalid css

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: Apache FalconJX 0.8.0
• Component/s: FalconJX
• Assignee: Unassigned
• Reporter: Harbs
• Created: 11/Jul/17 11:17
• Updated: 11/Jul/17 11:17

Description

The is room for improvement in the errors that the compiler reports when trying to compile invalid CSS.

For example:

.foo{
	8px 24px 0px;
}

This correctly causes a compiler error, but the error message is somewhat cryptic:

/Users/harbs/Documents/ApacheFlex/flex-falcon/compiler/src/main/antlr3/org/apache/flex/compiler/internal/css/CSSTree.g: node from after line 13:3 mismatched tree node: <mismatched token: [@111,219:221='8px',<52>,14:3], resync={
			8px 24px 0px;
		}> expecting I_DECL

distributed under the License is distributed on an "AS IS" BASIS,
   ^

/Users/harbs/Documents/git/PrintUI/printui-flexjs/PortedPrintUI/src/com/printui/view/components/PreviewBox.mxml(15): col: 4 /Users/harbs/Documents/git/PrintUI/printui-flexjs/PortedPrintUI/src/com/printui/view/components/PreviewBox.mxml line 14:3 mismatched input '8px' expecting BLOCK_END

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   ^

It shows the correct offending content, but the message is not very clear. Additionally, the line number where the error occurs is wrong.