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New blocks text_count, text_replace, and text_reverse (#830)

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Includes generators for all languages and units tests on those generators.
This commit is contained in:
Tim Dawborn
2017-01-21 11:08:27 +11:00
committed by Andrew n marshall
parent fb0f1b05dd
commit 34750bccd8
12 changed files with 935 additions and 9 deletions
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67
generators/lua/text.js
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@@ -292,3 +292,70 @@ Blockly.Lua['text_prompt_ext'] = function(block) {
};
Blockly.Lua['text_prompt'] = Blockly.Lua['text_prompt_ext'];
Blockly.Lua['text_count'] = function(block) {
var text = Blockly.Lua.valueToCode(block, 'TEXT',
Blockly.Lua.ORDER_NONE) || '\'\'';
var sub = Blockly.Lua.valueToCode(block, 'SUB',
Blockly.Lua.ORDER_NONE) || '\'\'';
var functionName = Blockly.Lua.provideFunction_(
'text_count',
['function ' + Blockly.Lua.FUNCTION_NAME_PLACEHOLDER_
+ '(haystack, needle)',
' if #needle == 0 then',
' return #haystack + 1',
' end',
' local i = 1',
' local count = 0',
' while true do',
' i = string.find(haystack, needle, i, true)',
' if i == nil then',
' break',
' end',
' count = count + 1',
' i = i + #needle',
' end',
' return count',
'end',
]);
var code = functionName + '(' + text + ', ' + sub + ')';
return [code, Blockly.Lua.ORDER_HIGH];
};
Blockly.Lua['text_replace'] = function(block) {
var text = Blockly.Lua.valueToCode(block, 'TEXT',
Blockly.Lua.ORDER_NONE) || '\'\'';
var from = Blockly.Lua.valueToCode(block, 'FROM',
Blockly.Lua.ORDER_NONE) || '\'\'';
var to = Blockly.Lua.valueToCode(block, 'TO',
Blockly.Lua.ORDER_NONE) || '\'\'';
var functionName = Blockly.Lua.provideFunction_(
'text_replace',
['function ' + Blockly.Lua.FUNCTION_NAME_PLACEHOLDER_
+ '(haystack, needle, replacement)',
' local buf = {}',
' local i = 1',
' while i <= #haystack do',
' if string.sub(haystack, i, i + #needle - 1) == needle then',
' for j = 1, #replacement do',
' table.insert(buf, string.sub(replacement, j, j))',
' end',
' i = i + #needle',
' else',
' table.insert(buf, string.sub(haystack, i, i))',
' i = i + 1',
' end',
' end',
' return table.concat(buf)',
'end',
]);
var code = functionName + '(' + text + ', ' + from + ', ' + to + ')';
return [code, Blockly.Lua.ORDER_HIGH];
};
Blockly.Lua['text_reverse'] = function(block) {
var text = Blockly.Lua.valueToCode(block, 'TEXT',
Blockly.Lua.ORDER_HIGH) || '\'\'';
var code = 'string.reverse(' + text + ')';
return [code, Blockly.Lua.ORDER_HIGH];
};