From 77a928e36430995ad60cfd1d52a3bf47fb608472 Mon Sep 17 00:00:00 2001
From: AnCoder <5988554+colorfulldays@users.noreply.github.com>
Date: Wed, 27 Sep 2023 20:36:18 +0800
Subject: [PATCH] =?UTF-8?q?fix:double.infinity=20=E7=94=9F=E6=88=90?=
 =?UTF-8?q?=E5=BC=82=E5=B8=B8?=
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---
 dart2dsl/lib/fairdsl/fair_ast_gen.dart |  3 +++
 dart2dsl/lib/fairdsl/fair_dsl_gen.dart | 17 ++++++++++++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/dart2dsl/lib/fairdsl/fair_ast_gen.dart b/dart2dsl/lib/fairdsl/fair_ast_gen.dart
index f41a9f4c..a7faf11c 100644
--- a/dart2dsl/lib/fairdsl/fair_ast_gen.dart
+++ b/dart2dsl/lib/fairdsl/fair_ast_gen.dart
@@ -413,6 +413,9 @@ class CustomAstVisitor extends SimpleAstVisitor<Map> {
 
   @override
   Map? visitPrefixExpression(PrefixExpression node){
+    if(node.operator.type == TokenType.MINUS && (node.operand is DoubleLiteral || node.operand is IntegerLiteral)){
+      return _buildNumericLiteral(num.parse(node.operand.toSource()) * -1);
+    }
     return _buildPrefixExpression(_visitNode(node.operand), node.operator.toString(), true);
   }
 
diff --git a/dart2dsl/lib/fairdsl/fair_dsl_gen.dart b/dart2dsl/lib/fairdsl/fair_dsl_gen.dart
index ce91dac6..d6044a11 100644
--- a/dart2dsl/lib/fairdsl/fair_dsl_gen.dart
+++ b/dart2dsl/lib/fairdsl/fair_dsl_gen.dart
@@ -5,6 +5,7 @@
  */
 
 import 'dart:convert';
+import 'dart:io';
 
 import 'package:fair_dart2dsl/fairdsl/fair_ast_logic_unit.dart';
 
@@ -320,6 +321,20 @@ dynamic _buildWidgetDsl(
   return dslMap;
 }
 
+bool isDoubleProperty(PrefixedIdentifier? node) {
+  if (!(node is PrefixedIdentifier) || node.prefix != 'double') {
+    return false;
+  }
+
+  switch (node.identifier) {
+    case 'infinity':
+      return true;
+    default:
+      stdout.writeln('Fair 不支持该 常量 double ${node.identifier}');
+      return false;
+  }
+}
+
 dynamic _buildValueExpression(
     Expression? valueExpression, FairDslContex? fairDslContex) {
   var naPaValue;
@@ -349,7 +364,7 @@ dynamic _buildValueExpression(
     naPaValue = valueExpression?.asBooleanLiteral.value;
   } else if (valueExpression?.isPrefixedIdentifier==true) {
     if (RegExp(r'^[a-z_]') // widget.** 参数类的特殊处理成#(),兼容1期
-        .hasMatch(valueExpression?.asPrefixedIdentifier.prefix??'') && ('widget' != valueExpression?.asPrefixedIdentifier.prefix)) {
+        .hasMatch(valueExpression?.asPrefixedIdentifier.prefix??'') && ('widget' != valueExpression?.asPrefixedIdentifier.prefix) && !isDoubleProperty(valueExpression?.asPrefixedIdentifier)) {
       naPaValue = '\$(' +
           (valueExpression?.asPrefixedIdentifier.prefix??'') +
           '.' +