Adding statement prefix to generators.

git-svn-id: http://blockly.googlecode.com/svn/trunk@1722 c400ca83-b69d-9dd7-9705-49c6b8615e23

core/generator.js

@@ -45,6 +45,22 @@ Blockly.Generator = function(name) {
  */
 Blockly.Generator.NAME_TYPE = 'generated_function';
 
+/**
+ * Arbitrary code to inject into locations that risk causing infinite loops.
+ * Any instances of '%1' will be replaced by the block ID that failed.
+ * E.g. '  checkTimeout(%1);\n'
+ * @type ?string
+ */
+Blockly.Generator.prototype.INFINITE_LOOP_TRAP = null;
+
+/**
+ * Arbitrary code to inject before every statement.
+ * Any instances of '%1' will be replaced by the block ID of the statement.
+ * E.g. 'highlight(%1);\n'
+ * @type ?string
+ */
+Blockly.Generator.prototype.STATEMENT_PREFIX = null;
+
 /**
  * Generate code for all blocks in the workspace to the specified language.
  * @return {string} Generated code.
@@ -142,6 +158,10 @@ Blockly.Generator.prototype.blockToCode = function(block) {
     // Value blocks return tuples of code and operator order.
     return [this.scrub_(block, code[0]), code[1]];
   } else {
+    if (this.STATEMENT_PREFIX) {
+      code = this.STATEMENT_PREFIX.replace(/%1/g, '\'' + block.id + '\'') +
+          code;
+    }
     return this.scrub_(block, code);
   }
 };

generators/dart.js

@@ -67,14 +67,6 @@ Blockly.Dart.ORDER_CASCADE = 14;       // ..
 Blockly.Dart.ORDER_ASSIGNMENT = 15;    // = *= /= ~/= %= += -= <<= >>= &= ^= |=
 Blockly.Dart.ORDER_NONE = 99;          // (...)
 
-/**
- * Arbitrary code to inject into locations that risk causing infinite loops.
- * Any instances of '%1' will be replaced by the block ID that failed.
- * E.g. '  checkTimeout(%1);\n'
- * @type ?string
- */
-Blockly.Dart.INFINITE_LOOP_TRAP = null;
-
 /**
  * Initialise the database of variable names.
  */

generators/javascript.js

@@ -99,14 +99,6 @@ Blockly.JavaScript.ORDER_ASSIGNMENT = 16;    // = += -= *= /= %= <<= >>= ...
 Blockly.JavaScript.ORDER_COMMA = 17;         // ,
 Blockly.JavaScript.ORDER_NONE = 99;          // (...)
 
-/**
- * Arbitrary code to inject into locations that risk causing infinite loops.
- * Any instances of '%1' will be replaced by the block ID that failed.
- * E.g. '  checkTimeout(%1);\n'
- * @type ?string
- */
-Blockly.JavaScript.INFINITE_LOOP_TRAP = null;
-
 /**
  * Initialise the database of variable names.
  */

generators/python.js

@@ -75,14 +75,6 @@ Blockly.Python.ORDER_CONDITIONAL = 15;      // if else
 Blockly.Python.ORDER_LAMBDA = 16;           // lambda
 Blockly.Python.ORDER_NONE = 99;             // (...)
 
-/**
- * Arbitrary code to inject into locations that risk causing infinite loops.
- * Any instances of '%1' will be replaced by the block ID that failed.
- * E.g. '  checkTimeout(%1)\n'
- * @type ?string
- */
-Blockly.Python.INFINITE_LOOP_TRAP = null;
-
 /**
  * Initialise the database of variable names.
  */