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refactor(generators): Introduce JavascriptGenerator class, Order enum (#7153)

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* refactor(generators): Introduce class JavascriptGenerator

  Also fix an import ordering error.

* refactor(generators): Use Order.* instead of .ORDER_*

* refactor(generators): Don't rename javascriptGenerator
This commit is contained in:
Christopher Allen
2023-06-13 21:30:37 +01:00
committed by GitHub
parent 3e9d892934
commit 306eb80216
10 changed files with 770 additions and 713 deletions
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44
generators/javascript/colour.js
View File

@@ -11,36 +11,36 @@
import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.JavaScript.colour');
import {javascriptGenerator as JavaScript} from '../javascript.js';
import {Order, javascriptGenerator} from '../javascript.js';
JavaScript.forBlock['colour_picker'] = function(block) {
javascriptGenerator.forBlock['colour_picker'] = function(block) {
// Colour picker.
const code = JavaScript.quote_(block.getFieldValue('COLOUR'));
return [code, JavaScript.ORDER_ATOMIC];
const code = javascriptGenerator.quote_(block.getFieldValue('COLOUR'));
return [code, Order.ATOMIC];
};
JavaScript.forBlock['colour_random'] = function(block) {
javascriptGenerator.forBlock['colour_random'] = function(block) {
// Generate a random colour.
const functionName = JavaScript.provideFunction_('colourRandom', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}() {
const functionName = javascriptGenerator.provideFunction_('colourRandom', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}() {
var num = Math.floor(Math.random() * Math.pow(2, 24));
return '#' + ('00000' + num.toString(16)).substr(-6);
}
`);
const code = functionName + '()';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['colour_rgb'] = function(block) {
javascriptGenerator.forBlock['colour_rgb'] = function(block) {
// Compose a colour from RGB components expressed as percentages.
const red = JavaScript.valueToCode(block, 'RED', JavaScript.ORDER_NONE) || 0;
const red = javascriptGenerator.valueToCode(block, 'RED', Order.NONE) || 0;
const green =
JavaScript.valueToCode(block, 'GREEN', JavaScript.ORDER_NONE) || 0;
javascriptGenerator.valueToCode(block, 'GREEN', Order.NONE) || 0;
const blue =
JavaScript.valueToCode(block, 'BLUE', JavaScript.ORDER_NONE) || 0;
const functionName = JavaScript.provideFunction_('colourRgb', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(r, g, b) {
javascriptGenerator.valueToCode(block, 'BLUE', Order.NONE) || 0;
const functionName = javascriptGenerator.provideFunction_('colourRgb', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(r, g, b) {
r = Math.max(Math.min(Number(r), 100), 0) * 2.55;
g = Math.max(Math.min(Number(g), 100), 0) * 2.55;
b = Math.max(Math.min(Number(b), 100), 0) * 2.55;
@@ -51,19 +51,19 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(r, g, b) {
}
`);
const code = functionName + '(' + red + ', ' + green + ', ' + blue + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['colour_blend'] = function(block) {
javascriptGenerator.forBlock['colour_blend'] = function(block) {
// Blend two colours together.
const c1 = JavaScript.valueToCode(block, 'COLOUR1', JavaScript.ORDER_NONE) ||
const c1 = javascriptGenerator.valueToCode(block, 'COLOUR1', Order.NONE) ||
"'#000000'";
const c2 = JavaScript.valueToCode(block, 'COLOUR2', JavaScript.ORDER_NONE) ||
const c2 = javascriptGenerator.valueToCode(block, 'COLOUR2', Order.NONE) ||
"'#000000'";
const ratio =
JavaScript.valueToCode(block, 'RATIO', JavaScript.ORDER_NONE) || 0.5;
const functionName = JavaScript.provideFunction_('colourBlend', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(c1, c2, ratio) {
javascriptGenerator.valueToCode(block, 'RATIO', Order.NONE) || 0.5;
const functionName = javascriptGenerator.provideFunction_('colourBlend', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(c1, c2, ratio) {
ratio = Math.max(Math.min(Number(ratio), 1), 0);
var r1 = parseInt(c1.substring(1, 3), 16);
var g1 = parseInt(c1.substring(3, 5), 16);
@@ -81,5 +81,5 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(c1, c2, ratio) {
}
`);
const code = functionName + '(' + c1 + ', ' + c2 + ', ' + ratio + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};

148
generators/javascript/lists.js
View File

@@ -13,30 +13,30 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.JavaScript.lists');
import {NameType} from '../../core/names.js';
import {javascriptGenerator as JavaScript} from '../javascript.js';
import {Order, javascriptGenerator} from '../javascript.js';
JavaScript.forBlock['lists_create_empty'] = function(block) {
javascriptGenerator.forBlock['lists_create_empty'] = function(block) {
// Create an empty list.
return ['[]', JavaScript.ORDER_ATOMIC];
return ['[]', Order.ATOMIC];
};
JavaScript.forBlock['lists_create_with'] = function(block) {
javascriptGenerator.forBlock['lists_create_with'] = function(block) {
// Create a list with any number of elements of any type.
const elements = new Array(block.itemCount_);
for (let i = 0; i < block.itemCount_; i++) {
elements[i] =
JavaScript.valueToCode(block, 'ADD' + i, JavaScript.ORDER_NONE) ||
javascriptGenerator.valueToCode(block, 'ADD' + i, Order.NONE) ||
'null';
}
const code = '[' + elements.join(', ') + ']';
return [code, JavaScript.ORDER_ATOMIC];
return [code, Order.ATOMIC];
};
JavaScript.forBlock['lists_repeat'] = function(block) {
javascriptGenerator.forBlock['lists_repeat'] = function(block) {
// Create a list with one element repeated.
const functionName = JavaScript.provideFunction_('listsRepeat', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(value, n) {
const functionName = javascriptGenerator.provideFunction_('listsRepeat', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(value, n) {
var array = [];
for (var i = 0; i < n; i++) {
array[i] = value;
@@ -45,59 +45,60 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(value, n) {
}
`);
const element =
JavaScript.valueToCode(block, 'ITEM', JavaScript.ORDER_NONE) || 'null';
javascriptGenerator.valueToCode(block, 'ITEM', Order.NONE) || 'null';
const repeatCount =
JavaScript.valueToCode(block, 'NUM', JavaScript.ORDER_NONE) || '0';
javascriptGenerator.valueToCode(block, 'NUM', Order.NONE) || '0';
const code = functionName + '(' + element + ', ' + repeatCount + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['lists_length'] = function(block) {
javascriptGenerator.forBlock['lists_length'] = function(block) {
// String or array length.
const list =
JavaScript.valueToCode(block, 'VALUE', JavaScript.ORDER_MEMBER) || '[]';
return [list + '.length', JavaScript.ORDER_MEMBER];
javascriptGenerator.valueToCode(block, 'VALUE', Order.MEMBER) || '[]';
return [list + '.length', Order.MEMBER];
};
JavaScript.forBlock['lists_isEmpty'] = function(block) {
javascriptGenerator.forBlock['lists_isEmpty'] = function(block) {
// Is the string null or array empty?
const list =
JavaScript.valueToCode(block, 'VALUE', JavaScript.ORDER_MEMBER) || '[]';
return ['!' + list + '.length', JavaScript.ORDER_LOGICAL_NOT];
javascriptGenerator.valueToCode(block, 'VALUE', Order.MEMBER) || '[]';
return ['!' + list + '.length', Order.LOGICAL_NOT];
};
JavaScript.forBlock['lists_indexOf'] = function(block) {
javascriptGenerator.forBlock['lists_indexOf'] = function(block) {
// Find an item in the list.
const operator =
block.getFieldValue('END') === 'FIRST' ? 'indexOf' : 'lastIndexOf';
const item =
JavaScript.valueToCode(block, 'FIND', JavaScript.ORDER_NONE) || "''";
javascriptGenerator.valueToCode(block, 'FIND', Order.NONE) || "''";
const list =
JavaScript.valueToCode(block, 'VALUE', JavaScript.ORDER_MEMBER) || '[]';
javascriptGenerator.valueToCode(block, 'VALUE', Order.MEMBER) || '[]';
const code = list + '.' + operator + '(' + item + ')';
if (block.workspace.options.oneBasedIndex) {
return [code + ' + 1', JavaScript.ORDER_ADDITION];
return [code + ' + 1', Order.ADDITION];
}
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['lists_getIndex'] = function(block) {
javascriptGenerator.forBlock['lists_getIndex'] = function(block) {
// Get element at index.
// Note: Until January 2013 this block did not have MODE or WHERE inputs.
const mode = block.getFieldValue('MODE') || 'GET';
const where = block.getFieldValue('WHERE') || 'FROM_START';
const listOrder =
(where === 'RANDOM') ? JavaScript.ORDER_NONE : JavaScript.ORDER_MEMBER;
const list = JavaScript.valueToCode(block, 'VALUE', listOrder) || '[]';
(where === 'RANDOM') ? Order.NONE : Order.MEMBER;
const list =
javascriptGenerator.valueToCode(block, 'VALUE', listOrder) || '[]';
switch (where) {
case ('FIRST'):
if (mode === 'GET') {
const code = list + '[0]';
return [code, JavaScript.ORDER_MEMBER];
return [code, Order.MEMBER];
} else if (mode === 'GET_REMOVE') {
const code = list + '.shift()';
return [code, JavaScript.ORDER_MEMBER];
return [code, Order.MEMBER];
} else if (mode === 'REMOVE') {
return list + '.shift();\n';
}
@@ -105,43 +106,44 @@ JavaScript.forBlock['lists_getIndex'] = function(block) {
case ('LAST'):
if (mode === 'GET') {
const code = list + '.slice(-1)[0]';
return [code, JavaScript.ORDER_MEMBER];
return [code, Order.MEMBER];
} else if (mode === 'GET_REMOVE') {
const code = list + '.pop()';
return [code, JavaScript.ORDER_MEMBER];
return [code, Order.MEMBER];
} else if (mode === 'REMOVE') {
return list + '.pop();\n';
}
break;
case ('FROM_START'): {
const at = JavaScript.getAdjusted(block, 'AT');
const at = javascriptGenerator.getAdjusted(block, 'AT');
if (mode === 'GET') {
const code = list + '[' + at + ']';
return [code, JavaScript.ORDER_MEMBER];
return [code, Order.MEMBER];
} else if (mode === 'GET_REMOVE') {
const code = list + '.splice(' + at + ', 1)[0]';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
} else if (mode === 'REMOVE') {
return list + '.splice(' + at + ', 1);\n';
}
break;
}
case ('FROM_END'): {
const at = JavaScript.getAdjusted(block, 'AT', 1, true);
const at = javascriptGenerator.getAdjusted(block, 'AT', 1, true);
if (mode === 'GET') {
const code = list + '.slice(' + at + ')[0]';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
} else if (mode === 'GET_REMOVE') {
const code = list + '.splice(' + at + ', 1)[0]';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
} else if (mode === 'REMOVE') {
return list + '.splice(' + at + ', 1);';
}
break;
}
case ('RANDOM'): {
const functionName = JavaScript.provideFunction_('listsGetRandomItem', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(list, remove) {
const functionName =
javascriptGenerator.provideFunction_('listsGetRandomItem', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(list, remove) {
var x = Math.floor(Math.random() * list.length);
if (remove) {
return list.splice(x, 1)[0];
@@ -152,7 +154,7 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(list, remove) {
`);
const code = functionName + '(' + list + ', ' + (mode !== 'GET') + ')';
if (mode === 'GET' || mode === 'GET_REMOVE') {
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
} else if (mode === 'REMOVE') {
return code + ';\n';
}
@@ -162,15 +164,15 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(list, remove) {
throw Error('Unhandled combination (lists_getIndex).');
};
JavaScript.forBlock['lists_setIndex'] = function(block) {
javascriptGenerator.forBlock['lists_setIndex'] = function(block) {
// Set element at index.
// Note: Until February 2013 this block did not have MODE or WHERE inputs.
let list =
JavaScript.valueToCode(block, 'LIST', JavaScript.ORDER_MEMBER) || '[]';
javascriptGenerator.valueToCode(block, 'LIST', Order.MEMBER) || '[]';
const mode = block.getFieldValue('MODE') || 'GET';
const where = block.getFieldValue('WHERE') || 'FROM_START';
const value =
JavaScript.valueToCode(block, 'TO', JavaScript.ORDER_ASSIGNMENT) ||
javascriptGenerator.valueToCode(block, 'TO', Order.ASSIGNMENT) ||
'null';
// Cache non-trivial values to variables to prevent repeated look-ups.
// Closure, which accesses and modifies 'list'.
@@ -179,7 +181,8 @@ JavaScript.forBlock['lists_setIndex'] = function(block) {
return '';
}
const listVar =
JavaScript.nameDB_.getDistinctName('tmpList', NameType.VARIABLE);
javascriptGenerator.nameDB_.getDistinctName(
'tmpList', NameType.VARIABLE);
const code = 'var ' + listVar + ' = ' + list + ';\n';
list = listVar;
return code;
@@ -202,7 +205,7 @@ JavaScript.forBlock['lists_setIndex'] = function(block) {
}
break;
case ('FROM_START'): {
const at = JavaScript.getAdjusted(block, 'AT');
const at = javascriptGenerator.getAdjusted(block, 'AT');
if (mode === 'SET') {
return list + '[' + at + '] = ' + value + ';\n';
} else if (mode === 'INSERT') {
@@ -211,8 +214,8 @@ JavaScript.forBlock['lists_setIndex'] = function(block) {
break;
}
case ('FROM_END'): {
const at = JavaScript.getAdjusted(
block, 'AT', 1, false, JavaScript.ORDER_SUBTRACTION);
const at = javascriptGenerator.getAdjusted(
block, 'AT', 1, false, Order.SUBTRACTION);
let code = cacheList();
if (mode === 'SET') {
code += list + '[' + list + '.length - ' + at + '] = ' + value + ';\n';
@@ -227,7 +230,8 @@ JavaScript.forBlock['lists_setIndex'] = function(block) {
case ('RANDOM'): {
let code = cacheList();
const xVar =
JavaScript.nameDB_.getDistinctName('tmpX', NameType.VARIABLE);
javascriptGenerator.nameDB_.getDistinctName(
'tmpX', NameType.VARIABLE);
code += 'var ' + xVar + ' = Math.floor(Math.random() * ' + list +
'.length);\n';
if (mode === 'SET') {
@@ -262,10 +266,10 @@ const getSubstringIndex = function(listName, where, opt_at) {
}
};
JavaScript.forBlock['lists_getSublist'] = function(block) {
javascriptGenerator.forBlock['lists_getSublist'] = function(block) {
// Get sublist.
const list =
JavaScript.valueToCode(block, 'LIST', JavaScript.ORDER_MEMBER) || '[]';
javascriptGenerator.valueToCode(block, 'LIST', Order.MEMBER) || '[]';
const where1 = block.getFieldValue('WHERE1');
const where2 = block.getFieldValue('WHERE2');
let code;
@@ -279,11 +283,11 @@ JavaScript.forBlock['lists_getSublist'] = function(block) {
let at1;
switch (where1) {
case 'FROM_START':
at1 = JavaScript.getAdjusted(block, 'AT1');
at1 = javascriptGenerator.getAdjusted(block, 'AT1');
break;
case 'FROM_END':
at1 = JavaScript.getAdjusted(
block, 'AT1', 1, false, JavaScript.ORDER_SUBTRACTION);
at1 = javascriptGenerator.getAdjusted(
block, 'AT1', 1, false, Order.SUBTRACTION);
at1 = list + '.length - ' + at1;
break;
case 'FIRST':
@@ -295,11 +299,11 @@ JavaScript.forBlock['lists_getSublist'] = function(block) {
let at2;
switch (where2) {
case 'FROM_START':
at2 = JavaScript.getAdjusted(block, 'AT2', 1);
at2 = javascriptGenerator.getAdjusted(block, 'AT2', 1);
break;
case 'FROM_END':
at2 = JavaScript.getAdjusted(
block, 'AT2', 0, false, JavaScript.ORDER_SUBTRACTION);
at2 = javascriptGenerator.getAdjusted(
block, 'AT2', 0, false, Order.SUBTRACTION);
at2 = list + '.length - ' + at2;
break;
case 'LAST':
@@ -310,8 +314,8 @@ JavaScript.forBlock['lists_getSublist'] = function(block) {
}
code = list + '.slice(' + at1 + ', ' + at2 + ')';
} else {
const at1 = JavaScript.getAdjusted(block, 'AT1');
const at2 = JavaScript.getAdjusted(block, 'AT2');
const at1 = javascriptGenerator.getAdjusted(block, 'AT1');
const at2 = javascriptGenerator.getAdjusted(block, 'AT2');
const wherePascalCase = {
'FIRST': 'First',
'LAST': 'Last',
@@ -324,9 +328,9 @@ JavaScript.forBlock['lists_getSublist'] = function(block) {
(where1 === 'FROM_END' || where1 === 'FROM_START') ? ', at1' : '';
const at2Param =
(where2 === 'FROM_END' || where2 === 'FROM_START') ? ', at2' : '';
const functionName = JavaScript.provideFunction_(
const functionName = javascriptGenerator.provideFunction_(
'subsequence' + wherePascalCase[where1] + wherePascalCase[where2], `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(sequence${at1Param}${at2Param}) {
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(sequence${at1Param}${at2Param}) {
var start = ${getSubstringIndex('sequence', where1, 'at1')};
var end = ${getSubstringIndex('sequence', where2, 'at2')} + 1;
return sequence.slice(start, end);
@@ -339,19 +343,19 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(sequence${at1Param}${at2Param}
((where2 === 'FROM_END' || where2 === 'FROM_START') ? ', ' + at2 : '') +
')';
}
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['lists_sort'] = function(block) {
javascriptGenerator.forBlock['lists_sort'] = function(block) {
// Block for sorting a list.
const list =
JavaScript.valueToCode(block, 'LIST', JavaScript.ORDER_FUNCTION_CALL) ||
javascriptGenerator.valueToCode(block, 'LIST', Order.FUNCTION_CALL) ||
'[]';
const direction = block.getFieldValue('DIRECTION') === '1' ? 1 : -1;
const type = block.getFieldValue('TYPE');
const getCompareFunctionName =
JavaScript.provideFunction_('listsGetSortCompare', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(type, direction) {
javascriptGenerator.provideFunction_('listsGetSortCompare', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(type, direction) {
var compareFuncs = {
'NUMERIC': function(a, b) {
return Number(a) - Number(b); },
@@ -367,15 +371,15 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(type, direction) {
return [
list + '.slice().sort(' + getCompareFunctionName + '("' + type + '", ' +
direction + '))',
JavaScript.ORDER_FUNCTION_CALL
Order.FUNCTION_CALL
];
};
JavaScript.forBlock['lists_split'] = function(block) {
javascriptGenerator.forBlock['lists_split'] = function(block) {
// Block for splitting text into a list, or joining a list into text.
let input = JavaScript.valueToCode(block, 'INPUT', JavaScript.ORDER_MEMBER);
let input = javascriptGenerator.valueToCode(block, 'INPUT', Order.MEMBER);
const delimiter =
JavaScript.valueToCode(block, 'DELIM', JavaScript.ORDER_NONE) || "''";
javascriptGenerator.valueToCode(block, 'DELIM', Order.NONE) || "''";
const mode = block.getFieldValue('MODE');
let functionName;
if (mode === 'SPLIT') {
@@ -392,14 +396,14 @@ JavaScript.forBlock['lists_split'] = function(block) {
throw Error('Unknown mode: ' + mode);
}
const code = input + '.' + functionName + '(' + delimiter + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['lists_reverse'] = function(block) {
javascriptGenerator.forBlock['lists_reverse'] = function(block) {
// Block for reversing a list.
const list =
JavaScript.valueToCode(block, 'LIST', JavaScript.ORDER_FUNCTION_CALL) ||
javascriptGenerator.valueToCode(block, 'LIST', Order.FUNCTION_CALL) ||
'[]';
const code = list + '.slice().reverse()';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};

83
generators/javascript/logic.js
View File

@@ -11,26 +11,28 @@
import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.JavaScript.logic');
import {javascriptGenerator as JavaScript} from '../javascript.js';
import {Order, javascriptGenerator} from '../javascript.js';
JavaScript.forBlock['controls_if'] = function(block) {
javascriptGenerator.forBlock['controls_if'] = function(block) {
// If/elseif/else condition.
let n = 0;
let code = '';
if (JavaScript.STATEMENT_PREFIX) {
if (javascriptGenerator.STATEMENT_PREFIX) {
// Automatic prefix insertion is switched off for this block. Add manually.
code += JavaScript.injectId(JavaScript.STATEMENT_PREFIX, block);
code += javascriptGenerator.injectId(
javascriptGenerator.STATEMENT_PREFIX, block);
}
do {
const conditionCode =
JavaScript.valueToCode(block, 'IF' + n, JavaScript.ORDER_NONE) ||
javascriptGenerator.valueToCode(block, 'IF' + n, Order.NONE) ||
'false';
let branchCode = JavaScript.statementToCode(block, 'DO' + n);
if (JavaScript.STATEMENT_SUFFIX) {
branchCode = JavaScript.prefixLines(
JavaScript.injectId(JavaScript.STATEMENT_SUFFIX, block),
JavaScript.INDENT) +
let branchCode = javascriptGenerator.statementToCode(block, 'DO' + n);
if (javascriptGenerator.STATEMENT_SUFFIX) {
branchCode = javascriptGenerator.prefixLines(
javascriptGenerator.injectId(
javascriptGenerator.STATEMENT_SUFFIX, block),
javascriptGenerator.INDENT) +
branchCode;
}
code += (n > 0 ? ' else ' : '') + 'if (' + conditionCode + ') {\n' +
@@ -38,12 +40,13 @@ JavaScript.forBlock['controls_if'] = function(block) {
n++;
} while (block.getInput('IF' + n));
if (block.getInput('ELSE') || JavaScript.STATEMENT_SUFFIX) {
let branchCode = JavaScript.statementToCode(block, 'ELSE');
if (JavaScript.STATEMENT_SUFFIX) {
branchCode = JavaScript.prefixLines(
JavaScript.injectId(JavaScript.STATEMENT_SUFFIX, block),
JavaScript.INDENT) +
if (block.getInput('ELSE') || javascriptGenerator.STATEMENT_SUFFIX) {
let branchCode = javascriptGenerator.statementToCode(block, 'ELSE');
if (javascriptGenerator.STATEMENT_SUFFIX) {
branchCode = javascriptGenerator.prefixLines(
javascriptGenerator.injectId(
javascriptGenerator.STATEMENT_SUFFIX, block),
javascriptGenerator.INDENT) +
branchCode;
}
code += ' else {\n' + branchCode + '}';
@@ -51,29 +54,30 @@ JavaScript.forBlock['controls_if'] = function(block) {
return code + '\n';
};
JavaScript.forBlock['controls_ifelse'] = JavaScript.forBlock['controls_if'];
javascriptGenerator.forBlock['controls_ifelse'] =
javascriptGenerator.forBlock['controls_if'];
JavaScript.forBlock['logic_compare'] = function(block) {
javascriptGenerator.forBlock['logic_compare'] = function(block) {
// Comparison operator.
const OPERATORS =
{'EQ': '==', 'NEQ': '!=', 'LT': '<', 'LTE': '<=', 'GT': '>', 'GTE': '>='};
const operator = OPERATORS[block.getFieldValue('OP')];
const order = (operator === '==' || operator === '!=') ?
JavaScript.ORDER_EQUALITY :
JavaScript.ORDER_RELATIONAL;
const argument0 = JavaScript.valueToCode(block, 'A', order) || '0';
const argument1 = JavaScript.valueToCode(block, 'B', order) || '0';
Order.EQUALITY :
Order.RELATIONAL;
const argument0 = javascriptGenerator.valueToCode(block, 'A', order) || '0';
const argument1 = javascriptGenerator.valueToCode(block, 'B', order) || '0';
const code = argument0 + ' ' + operator + ' ' + argument1;
return [code, order];
};
JavaScript.forBlock['logic_operation'] = function(block) {
javascriptGenerator.forBlock['logic_operation'] = function(block) {
// Operations 'and', 'or'.
const operator = (block.getFieldValue('OP') === 'AND') ? '&&' : '||';
const order = (operator === '&&') ? JavaScript.ORDER_LOGICAL_AND :
JavaScript.ORDER_LOGICAL_OR;
let argument0 = JavaScript.valueToCode(block, 'A', order);
let argument1 = JavaScript.valueToCode(block, 'B', order);
const order = (operator === '&&') ? Order.LOGICAL_AND :
Order.LOGICAL_OR;
let argument0 = javascriptGenerator.valueToCode(block, 'A', order);
let argument1 = javascriptGenerator.valueToCode(block, 'B', order);
if (!argument0 && !argument1) {
// If there are no arguments, then the return value is false.
argument0 = 'false';
@@ -92,36 +96,37 @@ JavaScript.forBlock['logic_operation'] = function(block) {
return [code, order];
};
JavaScript.forBlock['logic_negate'] = function(block) {
javascriptGenerator.forBlock['logic_negate'] = function(block) {
// Negation.
const order = JavaScript.ORDER_LOGICAL_NOT;
const argument0 = JavaScript.valueToCode(block, 'BOOL', order) || 'true';
const order = Order.LOGICAL_NOT;
const argument0 =
javascriptGenerator.valueToCode(block, 'BOOL', order) || 'true';
const code = '!' + argument0;
return [code, order];
};
JavaScript.forBlock['logic_boolean'] = function(block) {
javascriptGenerator.forBlock['logic_boolean'] = function(block) {
// Boolean values true and false.
const code = (block.getFieldValue('BOOL') === 'TRUE') ? 'true' : 'false';
return [code, JavaScript.ORDER_ATOMIC];
return [code, Order.ATOMIC];
};
JavaScript.forBlock['logic_null'] = function(block) {
javascriptGenerator.forBlock['logic_null'] = function(block) {
// Null data type.
return ['null', JavaScript.ORDER_ATOMIC];
return ['null', Order.ATOMIC];
};
JavaScript.forBlock['logic_ternary'] = function(block) {
javascriptGenerator.forBlock['logic_ternary'] = function(block) {
// Ternary operator.
const value_if =
JavaScript.valueToCode(block, 'IF', JavaScript.ORDER_CONDITIONAL) ||
javascriptGenerator.valueToCode(block, 'IF', Order.CONDITIONAL) ||
'false';
const value_then =
JavaScript.valueToCode(block, 'THEN', JavaScript.ORDER_CONDITIONAL) ||
javascriptGenerator.valueToCode(block, 'THEN', Order.CONDITIONAL) ||
'null';
const value_else =
JavaScript.valueToCode(block, 'ELSE', JavaScript.ORDER_CONDITIONAL) ||
javascriptGenerator.valueToCode(block, 'ELSE', Order.CONDITIONAL) ||
'null';
const code = value_if + ' ? ' + value_then + ' : ' + value_else;
return [code, JavaScript.ORDER_CONDITIONAL];
return [code, Order.CONDITIONAL];
};

87
generators/javascript/loops.js
View File

@@ -13,10 +13,10 @@ goog.declareModuleId('Blockly.JavaScript.loops');
import * as stringUtils from '../../core/utils/string.js';
import {NameType} from '../../core/names.js';
import {javascriptGenerator as JavaScript} from '../javascript.js';
import {Order, javascriptGenerator} from '../javascript.js';
JavaScript.forBlock['controls_repeat_ext'] = function(block) {
javascriptGenerator.forBlock['controls_repeat_ext'] = function(block) {
// Repeat n times.
let repeats;
if (block.getField('TIMES')) {
@@ -25,18 +25,19 @@ JavaScript.forBlock['controls_repeat_ext'] = function(block) {
} else {
// External number.
repeats =
JavaScript.valueToCode(block, 'TIMES', JavaScript.ORDER_ASSIGNMENT) ||
javascriptGenerator.valueToCode(block, 'TIMES', Order.ASSIGNMENT) ||
'0';
}
let branch = JavaScript.statementToCode(block, 'DO');
branch = JavaScript.addLoopTrap(branch, block);
let branch = javascriptGenerator.statementToCode(block, 'DO');
branch = javascriptGenerator.addLoopTrap(branch, block);
let code = '';
const loopVar =
JavaScript.nameDB_.getDistinctName('count', NameType.VARIABLE);
javascriptGenerator.nameDB_.getDistinctName('count', NameType.VARIABLE);
let endVar = repeats;
if (!repeats.match(/^\w+$/) && !stringUtils.isNumber(repeats)) {
endVar =
JavaScript.nameDB_.getDistinctName('repeat_end', NameType.VARIABLE);
javascriptGenerator.nameDB_.getDistinctName(
'repeat_end', NameType.VARIABLE);
code += 'var ' + endVar + ' = ' + repeats + ';\n';
}
code += 'for (var ' + loopVar + ' = 0; ' + loopVar + ' < ' + endVar + '; ' +
@@ -44,36 +45,38 @@ JavaScript.forBlock['controls_repeat_ext'] = function(block) {
return code;
};
JavaScript.forBlock['controls_repeat'] = JavaScript.forBlock['controls_repeat_ext'];
javascriptGenerator.forBlock['controls_repeat'] =
javascriptGenerator.forBlock['controls_repeat_ext'];
JavaScript.forBlock['controls_whileUntil'] = function(block) {
javascriptGenerator.forBlock['controls_whileUntil'] = function(block) {
// Do while/until loop.
const until = block.getFieldValue('MODE') === 'UNTIL';
let argument0 =
JavaScript.valueToCode(
javascriptGenerator.valueToCode(
block, 'BOOL',
until ? JavaScript.ORDER_LOGICAL_NOT : JavaScript.ORDER_NONE) ||
until ? Order.LOGICAL_NOT : Order.NONE) ||
'false';
let branch = JavaScript.statementToCode(block, 'DO');
branch = JavaScript.addLoopTrap(branch, block);
let branch = javascriptGenerator.statementToCode(block, 'DO');
branch = javascriptGenerator.addLoopTrap(branch, block);
if (until) {
argument0 = '!' + argument0;
}
return 'while (' + argument0 + ') {\n' + branch + '}\n';
};
JavaScript.forBlock['controls_for'] = function(block) {
javascriptGenerator.forBlock['controls_for'] = function(block) {
// For loop.
const variable0 =
JavaScript.nameDB_.getName(block.getFieldValue('VAR'), NameType.VARIABLE);
javascriptGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
const argument0 =
JavaScript.valueToCode(block, 'FROM', JavaScript.ORDER_ASSIGNMENT) || '0';
javascriptGenerator.valueToCode(block, 'FROM', Order.ASSIGNMENT) || '0';
const argument1 =
JavaScript.valueToCode(block, 'TO', JavaScript.ORDER_ASSIGNMENT) || '0';
javascriptGenerator.valueToCode(block, 'TO', Order.ASSIGNMENT) || '0';
const increment =
JavaScript.valueToCode(block, 'BY', JavaScript.ORDER_ASSIGNMENT) || '1';
let branch = JavaScript.statementToCode(block, 'DO');
branch = JavaScript.addLoopTrap(branch, block);
javascriptGenerator.valueToCode(block, 'BY', Order.ASSIGNMENT) || '1';
let branch = javascriptGenerator.statementToCode(block, 'DO');
branch = javascriptGenerator.addLoopTrap(branch, block);
let code;
if (stringUtils.isNumber(argument0) && stringUtils.isNumber(argument1) &&
stringUtils.isNumber(increment)) {
@@ -93,19 +96,19 @@ JavaScript.forBlock['controls_for'] = function(block) {
// Cache non-trivial values to variables to prevent repeated look-ups.
let startVar = argument0;
if (!argument0.match(/^\w+$/) && !stringUtils.isNumber(argument0)) {
startVar = JavaScript.nameDB_.getDistinctName(
startVar = javascriptGenerator.nameDB_.getDistinctName(
variable0 + '_start', NameType.VARIABLE);
code += 'var ' + startVar + ' = ' + argument0 + ';\n';
}
let endVar = argument1;
if (!argument1.match(/^\w+$/) && !stringUtils.isNumber(argument1)) {
endVar = JavaScript.nameDB_.getDistinctName(
endVar = javascriptGenerator.nameDB_.getDistinctName(
variable0 + '_end', NameType.VARIABLE);
code += 'var ' + endVar + ' = ' + argument1 + ';\n';
}
// Determine loop direction at start, in case one of the bounds
// changes during loop execution.
const incVar = JavaScript.nameDB_.getDistinctName(
const incVar = javascriptGenerator.nameDB_.getDistinctName(
variable0 + '_inc', NameType.VARIABLE);
code += 'var ' + incVar + ' = ';
if (stringUtils.isNumber(increment)) {
@@ -114,7 +117,7 @@ JavaScript.forBlock['controls_for'] = function(block) {
code += 'Math.abs(' + increment + ');\n';
}
code += 'if (' + startVar + ' > ' + endVar + ') {\n';
code += JavaScript.INDENT + incVar + ' = -' + incVar + ';\n';
code += javascriptGenerator.INDENT + incVar + ' = -' + incVar + ';\n';
code += '}\n';
code += 'for (' + variable0 + ' = ' + startVar + '; ' + incVar +
' >= 0 ? ' + variable0 + ' <= ' + endVar + ' : ' + variable0 +
@@ -124,50 +127,54 @@ JavaScript.forBlock['controls_for'] = function(block) {
return code;
};
JavaScript.forBlock['controls_forEach'] = function(block) {
javascriptGenerator.forBlock['controls_forEach'] = function(block) {
// For each loop.
const variable0 =
JavaScript.nameDB_.getName(block.getFieldValue('VAR'), NameType.VARIABLE);
javascriptGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
const argument0 =
JavaScript.valueToCode(block, 'LIST', JavaScript.ORDER_ASSIGNMENT) ||
javascriptGenerator.valueToCode(block, 'LIST', Order.ASSIGNMENT) ||
'[]';
let branch = JavaScript.statementToCode(block, 'DO');
branch = JavaScript.addLoopTrap(branch, block);
let branch = javascriptGenerator.statementToCode(block, 'DO');
branch = javascriptGenerator.addLoopTrap(branch, block);
let code = '';
// Cache non-trivial values to variables to prevent repeated look-ups.
let listVar = argument0;
if (!argument0.match(/^\w+$/)) {
listVar = JavaScript.nameDB_.getDistinctName(
listVar = javascriptGenerator.nameDB_.getDistinctName(
variable0 + '_list', NameType.VARIABLE);
code += 'var ' + listVar + ' = ' + argument0 + ';\n';
}
const indexVar = JavaScript.nameDB_.getDistinctName(
const indexVar = javascriptGenerator.nameDB_.getDistinctName(
variable0 + '_index', NameType.VARIABLE);
branch = JavaScript.INDENT + variable0 + ' = ' + listVar + '[' + indexVar +
'];\n' + branch;
branch = javascriptGenerator.INDENT + variable0 + ' = ' + listVar +
'[' + indexVar + '];\n' + branch;
code += 'for (var ' + indexVar + ' in ' + listVar + ') {\n' + branch + '}\n';
return code;
};
JavaScript.forBlock['controls_flow_statements'] = function(block) {
javascriptGenerator.forBlock['controls_flow_statements'] = function(block) {
// Flow statements: continue, break.
let xfix = '';
if (JavaScript.STATEMENT_PREFIX) {
if (javascriptGenerator.STATEMENT_PREFIX) {
// Automatic prefix insertion is switched off for this block. Add manually.
xfix += JavaScript.injectId(JavaScript.STATEMENT_PREFIX, block);
xfix += javascriptGenerator.injectId(
javascriptGenerator.STATEMENT_PREFIX, block);
}
if (JavaScript.STATEMENT_SUFFIX) {
if (javascriptGenerator.STATEMENT_SUFFIX) {
// Inject any statement suffix here since the regular one at the end
// will not get executed if the break/continue is triggered.
xfix += JavaScript.injectId(JavaScript.STATEMENT_SUFFIX, block);
xfix += javascriptGenerator.injectId(
javascriptGenerator.STATEMENT_SUFFIX, block);
}
if (JavaScript.STATEMENT_PREFIX) {
if (javascriptGenerator.STATEMENT_PREFIX) {
const loop = block.getSurroundLoop();
if (loop && !loop.suppressPrefixSuffix) {
// Inject loop's statement prefix here since the regular one at the end
// of the loop will not get executed if 'continue' is triggered.
// In the case of 'break', a prefix is needed due to the loop's suffix.
xfix += JavaScript.injectId(JavaScript.STATEMENT_PREFIX, loop);
xfix += javascriptGenerator.injectId(
javascriptGenerator.STATEMENT_PREFIX, loop);
}
}
switch (block.getFieldValue('FLOW')) {

227
generators/javascript/math.js
View File

@@ -13,63 +13,63 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.JavaScript.math');
import {NameType} from '../../core/names.js';
import {javascriptGenerator as JavaScript} from '../javascript.js';
import {Order, javascriptGenerator} from '../javascript.js';
JavaScript.forBlock['math_number'] = function(block) {
javascriptGenerator.forBlock['math_number'] = function(block) {
// Numeric value.
const code = Number(block.getFieldValue('NUM'));
const order = code >= 0 ? JavaScript.ORDER_ATOMIC :
JavaScript.ORDER_UNARY_NEGATION;
const order = code >= 0 ? Order.ATOMIC :
Order.UNARY_NEGATION;
return [code, order];
};
JavaScript.forBlock['math_arithmetic'] = function(block) {
javascriptGenerator.forBlock['math_arithmetic'] = function(block) {
// Basic arithmetic operators, and power.
const OPERATORS = {
'ADD': [' + ', JavaScript.ORDER_ADDITION],
'MINUS': [' - ', JavaScript.ORDER_SUBTRACTION],
'MULTIPLY': [' * ', JavaScript.ORDER_MULTIPLICATION],
'DIVIDE': [' / ', JavaScript.ORDER_DIVISION],
'POWER': [null, JavaScript.ORDER_NONE], // Handle power separately.
'ADD': [' + ', Order.ADDITION],
'MINUS': [' - ', Order.SUBTRACTION],
'MULTIPLY': [' * ', Order.MULTIPLICATION],
'DIVIDE': [' / ', Order.DIVISION],
'POWER': [null, Order.NONE], // Handle power separately.
};
const tuple = OPERATORS[block.getFieldValue('OP')];
const operator = tuple[0];
const order = tuple[1];
const argument0 = JavaScript.valueToCode(block, 'A', order) || '0';
const argument1 = JavaScript.valueToCode(block, 'B', order) || '0';
const argument0 = javascriptGenerator.valueToCode(block, 'A', order) || '0';
const argument1 = javascriptGenerator.valueToCode(block, 'B', order) || '0';
let code;
// Power in JavaScript requires a special case since it has no operator.
if (!operator) {
code = 'Math.pow(' + argument0 + ', ' + argument1 + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
}
code = argument0 + operator + argument1;
return [code, order];
};
JavaScript.forBlock['math_single'] = function(block) {
javascriptGenerator.forBlock['math_single'] = function(block) {
// Math operators with single operand.
const operator = block.getFieldValue('OP');
let code;
let arg;
if (operator === 'NEG') {
// Negation is a special case given its different operator precedence.
arg = JavaScript.valueToCode(block, 'NUM',
JavaScript.ORDER_UNARY_NEGATION) || '0';
arg = javascriptGenerator.valueToCode(block, 'NUM',
Order.UNARY_NEGATION) || '0';
if (arg[0] === '-') {
// --3 is not legal in JS.
arg = ' ' + arg;
}
code = '-' + arg;
return [code, JavaScript.ORDER_UNARY_NEGATION];
return [code, Order.UNARY_NEGATION];
}
if (operator === 'SIN' || operator === 'COS' || operator === 'TAN') {
arg = JavaScript.valueToCode(block, 'NUM',
JavaScript.ORDER_DIVISION) || '0';
arg = javascriptGenerator.valueToCode(block, 'NUM',
Order.DIVISION) || '0';
} else {
arg = JavaScript.valueToCode(block, 'NUM',
JavaScript.ORDER_NONE) || '0';
arg = javascriptGenerator.valueToCode(block, 'NUM',
Order.NONE) || '0';
}
// First, handle cases which generate values that don't need parentheses
// wrapping the code.
@@ -109,7 +109,7 @@ JavaScript.forBlock['math_single'] = function(block) {
break;
}
if (code) {
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
}
// Second, handle cases which generate values that may need parentheses
// wrapping the code.
@@ -129,46 +129,47 @@ JavaScript.forBlock['math_single'] = function(block) {
default:
throw Error('Unknown math operator: ' + operator);
}
return [code, JavaScript.ORDER_DIVISION];
return [code, Order.DIVISION];
};
JavaScript.forBlock['math_constant'] = function(block) {
javascriptGenerator.forBlock['math_constant'] = function(block) {
// Constants: PI, E, the Golden Ratio, sqrt(2), 1/sqrt(2), INFINITY.
const CONSTANTS = {
'PI': ['Math.PI', JavaScript.ORDER_MEMBER],
'E': ['Math.E', JavaScript.ORDER_MEMBER],
'GOLDEN_RATIO': ['(1 + Math.sqrt(5)) / 2', JavaScript.ORDER_DIVISION],
'SQRT2': ['Math.SQRT2', JavaScript.ORDER_MEMBER],
'SQRT1_2': ['Math.SQRT1_2', JavaScript.ORDER_MEMBER],
'INFINITY': ['Infinity', JavaScript.ORDER_ATOMIC],
'PI': ['Math.PI', Order.MEMBER],
'E': ['Math.E', Order.MEMBER],
'GOLDEN_RATIO': ['(1 + Math.sqrt(5)) / 2', Order.DIVISION],
'SQRT2': ['Math.SQRT2', Order.MEMBER],
'SQRT1_2': ['Math.SQRT1_2', Order.MEMBER],
'INFINITY': ['Infinity', Order.ATOMIC],
};
return CONSTANTS[block.getFieldValue('CONSTANT')];
};
JavaScript.forBlock['math_number_property'] = function(block) {
javascriptGenerator.forBlock['math_number_property'] = function(block) {
// Check if a number is even, odd, prime, whole, positive, or negative
// or if it is divisible by certain number. Returns true or false.
const PROPERTIES = {
'EVEN': [' % 2 === 0', JavaScript.ORDER_MODULUS, JavaScript.ORDER_EQUALITY],
'ODD': [' % 2 === 1', JavaScript.ORDER_MODULUS, JavaScript.ORDER_EQUALITY],
'WHOLE': [' % 1 === 0', JavaScript.ORDER_MODULUS,
JavaScript.ORDER_EQUALITY],
'POSITIVE': [' > 0', JavaScript.ORDER_RELATIONAL,
JavaScript.ORDER_RELATIONAL],
'NEGATIVE': [' < 0', JavaScript.ORDER_RELATIONAL,
JavaScript.ORDER_RELATIONAL],
'DIVISIBLE_BY': [null, JavaScript.ORDER_MODULUS, JavaScript.ORDER_EQUALITY],
'PRIME': [null, JavaScript.ORDER_NONE, JavaScript.ORDER_FUNCTION_CALL],
'EVEN': [' % 2 === 0', Order.MODULUS, Order.EQUALITY],
'ODD': [' % 2 === 1', Order.MODULUS, Order.EQUALITY],
'WHOLE': [' % 1 === 0', Order.MODULUS,
Order.EQUALITY],
'POSITIVE': [' > 0', Order.RELATIONAL,
Order.RELATIONAL],
'NEGATIVE': [' < 0', Order.RELATIONAL,
Order.RELATIONAL],
'DIVISIBLE_BY': [null, Order.MODULUS, Order.EQUALITY],
'PRIME': [null, Order.NONE, Order.FUNCTION_CALL],
};
const dropdownProperty = block.getFieldValue('PROPERTY');
const [suffix, inputOrder, outputOrder] = PROPERTIES[dropdownProperty];
const numberToCheck = JavaScript.valueToCode(block, 'NUMBER_TO_CHECK',
inputOrder) || '0';
const numberToCheck =
javascriptGenerator.valueToCode(block, 'NUMBER_TO_CHECK', inputOrder) ||
'0';
let code;
if (dropdownProperty === 'PRIME') {
// Prime is a special case as it is not a one-liner test.
const functionName = JavaScript.provideFunction_('mathIsPrime', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(n) {
const functionName = javascriptGenerator.provideFunction_('mathIsPrime', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(n) {
// https://en.wikipedia.org/wiki/Primality_test#Naive_methods
if (n == 2 || n == 3) {
return true;
@@ -189,8 +190,8 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(n) {
`);
code = functionName + '(' + numberToCheck + ')';
} else if (dropdownProperty === 'DIVISIBLE_BY') {
const divisor = JavaScript.valueToCode(block, 'DIVISOR',
JavaScript.ORDER_MODULUS) || '0';
const divisor = javascriptGenerator.valueToCode(block, 'DIVISOR',
Order.MODULUS) || '0';
code = numberToCheck + ' % ' + divisor + ' === 0';
} else {
code = numberToCheck + suffix;
@@ -198,58 +199,60 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(n) {
return [code, outputOrder];
};
JavaScript.forBlock['math_change'] = function(block) {
javascriptGenerator.forBlock['math_change'] = function(block) {
// Add to a variable in place.
const argument0 = JavaScript.valueToCode(block, 'DELTA',
JavaScript.ORDER_ADDITION) || '0';
const varName = JavaScript.nameDB_.getName(
const argument0 = javascriptGenerator.valueToCode(block, 'DELTA',
Order.ADDITION) || '0';
const varName = javascriptGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
return varName + ' = (typeof ' + varName + ' === \'number\' ? ' + varName +
' : 0) + ' + argument0 + ';\n';
};
// Rounding functions have a single operand.
JavaScript.forBlock['math_round'] = JavaScript.forBlock['math_single'];
javascriptGenerator.forBlock['math_round'] =
javascriptGenerator.forBlock['math_single'];
// Trigonometry functions have a single operand.
JavaScript.forBlock['math_trig'] = JavaScript.forBlock['math_single'];
javascriptGenerator.forBlock['math_trig'] =
javascriptGenerator.forBlock['math_single'];
JavaScript.forBlock['math_on_list'] = function(block) {
javascriptGenerator.forBlock['math_on_list'] = function(block) {
// Math functions for lists.
const func = block.getFieldValue('OP');
let list;
let code;
switch (func) {
case 'SUM':
list = JavaScript.valueToCode(block, 'LIST',
JavaScript.ORDER_MEMBER) || '[]';
list = javascriptGenerator.valueToCode(block, 'LIST',
Order.MEMBER) || '[]';
code = list + '.reduce(function(x, y) {return x + y;}, 0)';
break;
case 'MIN':
list = JavaScript.valueToCode(block, 'LIST',
JavaScript.ORDER_NONE) || '[]';
list = javascriptGenerator.valueToCode(block, 'LIST',
Order.NONE) || '[]';
code = 'Math.min.apply(null, ' + list + ')';
break;
case 'MAX':
list = JavaScript.valueToCode(block, 'LIST',
JavaScript.ORDER_NONE) || '[]';
list = javascriptGenerator.valueToCode(block, 'LIST',
Order.NONE) || '[]';
code = 'Math.max.apply(null, ' + list + ')';
break;
case 'AVERAGE': {
// mathMean([null,null,1,3]) === 2.0.
const functionName = JavaScript.provideFunction_('mathMean', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(myList) {
const functionName = javascriptGenerator.provideFunction_('mathMean', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(myList) {
return myList.reduce(function(x, y) {return x + y;}, 0) / myList.length;
}
`);
list = JavaScript.valueToCode(block, 'LIST',
JavaScript.ORDER_NONE) || '[]';
list = javascriptGenerator.valueToCode(block, 'LIST',
Order.NONE) || '[]';
code = functionName + '(' + list + ')';
break;
}
case 'MEDIAN': {
// mathMedian([null,null,1,3]) === 2.0.
const functionName = JavaScript.provideFunction_('mathMedian', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(myList) {
const functionName = javascriptGenerator.provideFunction_('mathMedian', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(myList) {
var localList = myList.filter(function (x) {return typeof x === 'number';});
if (!localList.length) return null;
localList.sort(function(a, b) {return b - a;});
@@ -260,8 +263,8 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(myList) {
}
}
`);
list = JavaScript.valueToCode(block, 'LIST',
JavaScript.ORDER_NONE) || '[]';
list = javascriptGenerator.valueToCode(block, 'LIST',
Order.NONE) || '[]';
code = functionName + '(' + list + ')';
break;
}
@@ -269,8 +272,8 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(myList) {
// As a list of numbers can contain more than one mode,
// the returned result is provided as an array.
// Mode of [3, 'x', 'x', 1, 1, 2, '3'] -> ['x', 1].
const functionName = JavaScript.provideFunction_('mathModes', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(values) {
const functionName = javascriptGenerator.provideFunction_('mathModes', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(values) {
var modes = [];
var counts = [];
var maxCount = 0;
@@ -299,14 +302,15 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(values) {
return modes;
}
`);
list = JavaScript.valueToCode(block, 'LIST',
JavaScript.ORDER_NONE) || '[]';
list = javascriptGenerator.valueToCode(block, 'LIST',
Order.NONE) || '[]';
code = functionName + '(' + list + ')';
break;
}
case 'STD_DEV': {
const functionName = JavaScript.provideFunction_('mathStandardDeviation', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(numbers) {
const functionName =
javascriptGenerator.provideFunction_('mathStandardDeviation', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(numbers) {
var n = numbers.length;
if (!n) return null;
var mean = numbers.reduce(function(x, y) {return x + y;}) / n;
@@ -318,60 +322,61 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(numbers) {
return Math.sqrt(variance);
}
`);
list = JavaScript.valueToCode(block, 'LIST',
JavaScript.ORDER_NONE) || '[]';
list = javascriptGenerator.valueToCode(block, 'LIST',
Order.NONE) || '[]';
code = functionName + '(' + list + ')';
break;
}
case 'RANDOM': {
const functionName = JavaScript.provideFunction_('mathRandomList', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(list) {
const functionName =
javascriptGenerator.provideFunction_('mathRandomList', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(list) {
var x = Math.floor(Math.random() * list.length);
return list[x];
}
`);
list = JavaScript.valueToCode(block, 'LIST',
JavaScript.ORDER_NONE) || '[]';
list = javascriptGenerator.valueToCode(block, 'LIST',
Order.NONE) || '[]';
code = functionName + '(' + list + ')';
break;
}
default:
throw Error('Unknown operator: ' + func);
}
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['math_modulo'] = function(block) {
javascriptGenerator.forBlock['math_modulo'] = function(block) {
// Remainder computation.
const argument0 = JavaScript.valueToCode(block, 'DIVIDEND',
JavaScript.ORDER_MODULUS) || '0';
const argument1 = JavaScript.valueToCode(block, 'DIVISOR',
JavaScript.ORDER_MODULUS) || '0';
const argument0 = javascriptGenerator.valueToCode(block, 'DIVIDEND',
Order.MODULUS) || '0';
const argument1 = javascriptGenerator.valueToCode(block, 'DIVISOR',
Order.MODULUS) || '0';
const code = argument0 + ' % ' + argument1;
return [code, JavaScript.ORDER_MODULUS];
return [code, Order.MODULUS];
};
JavaScript.forBlock['math_constrain'] = function(block) {
javascriptGenerator.forBlock['math_constrain'] = function(block) {
// Constrain a number between two limits.
const argument0 = JavaScript.valueToCode(block, 'VALUE',
JavaScript.ORDER_NONE) || '0';
const argument1 = JavaScript.valueToCode(block, 'LOW',
JavaScript.ORDER_NONE) || '0';
const argument2 = JavaScript.valueToCode(block, 'HIGH',
JavaScript.ORDER_NONE) || 'Infinity';
const argument0 = javascriptGenerator.valueToCode(block, 'VALUE',
Order.NONE) || '0';
const argument1 = javascriptGenerator.valueToCode(block, 'LOW',
Order.NONE) || '0';
const argument2 = javascriptGenerator.valueToCode(block, 'HIGH',
Order.NONE) || 'Infinity';
const code = 'Math.min(Math.max(' + argument0 + ', ' + argument1 + '), ' +
argument2 + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['math_random_int'] = function(block) {
javascriptGenerator.forBlock['math_random_int'] = function(block) {
// Random integer between [X] and [Y].
const argument0 = JavaScript.valueToCode(block, 'FROM',
JavaScript.ORDER_NONE) || '0';
const argument1 = JavaScript.valueToCode(block, 'TO',
JavaScript.ORDER_NONE) || '0';
const functionName = JavaScript.provideFunction_('mathRandomInt', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(a, b) {
const argument0 = javascriptGenerator.valueToCode(block, 'FROM',
Order.NONE) || '0';
const argument1 = javascriptGenerator.valueToCode(block, 'TO',
Order.NONE) || '0';
const functionName = javascriptGenerator.provideFunction_('mathRandomInt', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(a, b) {
if (a > b) {
// Swap a and b to ensure a is smaller.
var c = a;
@@ -382,20 +387,20 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(a, b) {
}
`);
const code = functionName + '(' + argument0 + ', ' + argument1 + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['math_random_float'] = function(block) {
javascriptGenerator.forBlock['math_random_float'] = function(block) {
// Random fraction between 0 and 1.
return ['Math.random()', JavaScript.ORDER_FUNCTION_CALL];
return ['Math.random()', Order.FUNCTION_CALL];
};
JavaScript.forBlock['math_atan2'] = function(block) {
javascriptGenerator.forBlock['math_atan2'] = function(block) {
// Arctangent of point (X, Y) in degrees from -180 to 180.
const argument0 = JavaScript.valueToCode(block, 'X',
JavaScript.ORDER_NONE) || '0';
const argument1 = JavaScript.valueToCode(block, 'Y',
JavaScript.ORDER_NONE) || '0';
const argument0 = javascriptGenerator.valueToCode(block, 'X',
Order.NONE) || '0';
const argument1 = javascriptGenerator.valueToCode(block, 'Y',
Order.NONE) || '0';
return ['Math.atan2(' + argument1 + ', ' + argument0 + ') / Math.PI * 180',
JavaScript.ORDER_DIVISION];
Order.DIVISION];
};

82
generators/javascript/procedures.js
View File

@@ -12,98 +12,112 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.JavaScript.procedures');
import {NameType} from '../../core/names.js';
import {javascriptGenerator as JavaScript} from '../javascript.js';
import {Order, javascriptGenerator} from '../javascript.js';
JavaScript.forBlock['procedures_defreturn'] = function(block) {
javascriptGenerator.forBlock['procedures_defreturn'] = function(block) {
// Define a procedure with a return value.
const funcName = JavaScript.nameDB_.getName(
const funcName = javascriptGenerator.nameDB_.getName(
block.getFieldValue('NAME'), NameType.PROCEDURE);
let xfix1 = '';
if (JavaScript.STATEMENT_PREFIX) {
xfix1 += JavaScript.injectId(JavaScript.STATEMENT_PREFIX, block);
if (javascriptGenerator.STATEMENT_PREFIX) {
xfix1 += javascriptGenerator.injectId(
javascriptGenerator.STATEMENT_PREFIX, block);
}
if (JavaScript.STATEMENT_SUFFIX) {
xfix1 += JavaScript.injectId(JavaScript.STATEMENT_SUFFIX, block);
if (javascriptGenerator.STATEMENT_SUFFIX) {
xfix1 += javascriptGenerator.injectId(
javascriptGenerator.STATEMENT_SUFFIX, block);
}
if (xfix1) {
xfix1 = JavaScript.prefixLines(xfix1, JavaScript.INDENT);
xfix1 = javascriptGenerator.prefixLines(xfix1, javascriptGenerator.INDENT);
}
let loopTrap = '';
if (JavaScript.INFINITE_LOOP_TRAP) {
loopTrap = JavaScript.prefixLines(
JavaScript.injectId(JavaScript.INFINITE_LOOP_TRAP, block),
JavaScript.INDENT);
if (javascriptGenerator.INFINITE_LOOP_TRAP) {
loopTrap = javascriptGenerator.prefixLines(
javascriptGenerator.injectId(
javascriptGenerator.INFINITE_LOOP_TRAP, block),
javascriptGenerator.INDENT);
}
const branch = JavaScript.statementToCode(block, 'STACK');
const branch = javascriptGenerator.statementToCode(block, 'STACK');
let returnValue =
JavaScript.valueToCode(block, 'RETURN', JavaScript.ORDER_NONE) || '';
javascriptGenerator.valueToCode(block, 'RETURN', Order.NONE) || '';
let xfix2 = '';
if (branch && returnValue) {
// After executing the function body, revisit this block for the return.
xfix2 = xfix1;
}
if (returnValue) {
returnValue = JavaScript.INDENT + 'return ' + returnValue + ';\n';
returnValue = javascriptGenerator.INDENT + 'return ' + returnValue + ';\n';
}
const args = [];
const variables = block.getVars();
for (let i = 0; i < variables.length; i++) {
args[i] = JavaScript.nameDB_.getName(variables[i], NameType.VARIABLE);
args[i] =
javascriptGenerator.nameDB_.getName(variables[i], NameType.VARIABLE);
}
let code = 'function ' + funcName + '(' + args.join(', ') + ') {\n' + xfix1 +
loopTrap + branch + xfix2 + returnValue + '}';
code = JavaScript.scrub_(block, code);
code = javascriptGenerator.scrub_(block, code);
// Add % so as not to collide with helper functions in definitions list.
JavaScript.definitions_['%' + funcName] = code;
javascriptGenerator.definitions_['%' + funcName] = code;
return null;
};
// Defining a procedure without a return value uses the same generator as
// a procedure with a return value.
JavaScript.forBlock['procedures_defnoreturn'] = JavaScript.forBlock['procedures_defreturn'];
javascriptGenerator.forBlock['procedures_defnoreturn'] =
javascriptGenerator.forBlock['procedures_defreturn'];
JavaScript.forBlock['procedures_callreturn'] = function(block) {
javascriptGenerator.forBlock['procedures_callreturn'] = function(block) {
// Call a procedure with a return value.
const funcName = JavaScript.nameDB_.getName(
const funcName = javascriptGenerator.nameDB_.getName(
block.getFieldValue('NAME'), NameType.PROCEDURE);
const args = [];
const variables = block.getVars();
for (let i = 0; i < variables.length; i++) {
args[i] = JavaScript.valueToCode(block, 'ARG' + i, JavaScript.ORDER_NONE) ||
args[i] = javascriptGenerator.valueToCode(block, 'ARG' + i, Order.NONE) ||
'null';
}
const code = funcName + '(' + args.join(', ') + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['procedures_callnoreturn'] = function(block) {
javascriptGenerator.forBlock['procedures_callnoreturn'] = function(block) {
// Call a procedure with no return value.
// Generated code is for a function call as a statement is the same as a
// function call as a value, with the addition of line ending.
const tuple = JavaScript.forBlock['procedures_callreturn'](block);
const tuple = javascriptGenerator.forBlock['procedures_callreturn'](block);
return tuple[0] + ';\n';
};
JavaScript.forBlock['procedures_ifreturn'] = function(block) {
javascriptGenerator.forBlock['procedures_callnoreturn'] = function(block) {
// Call a procedure with no return value.
// Generated code is for a function call as a statement is the same as a
// function call as a value, with the addition of line ending.
const tuple = javascriptGenerator.forBlock['procedures_callreturn'](block);
return tuple[0] + ';\n';
};
javascriptGenerator.forBlock['procedures_ifreturn'] = function(block) {
// Conditionally return value from a procedure.
const condition =
JavaScript.valueToCode(block, 'CONDITION', JavaScript.ORDER_NONE) ||
javascriptGenerator.valueToCode(block, 'CONDITION', Order.NONE) ||
'false';
let code = 'if (' + condition + ') {\n';
if (JavaScript.STATEMENT_SUFFIX) {
if (javascriptGenerator.STATEMENT_SUFFIX) {
// Inject any statement suffix here since the regular one at the end
// will not get executed if the return is triggered.
code += JavaScript.prefixLines(
JavaScript.injectId(JavaScript.STATEMENT_SUFFIX, block),
JavaScript.INDENT);
code += javascriptGenerator.prefixLines(
javascriptGenerator.injectId(
javascriptGenerator.STATEMENT_SUFFIX, block),
javascriptGenerator.INDENT);
}
if (block.hasReturnValue_) {
const value =
JavaScript.valueToCode(block, 'VALUE', JavaScript.ORDER_NONE) || 'null';
code += JavaScript.INDENT + 'return ' + value + ';\n';
javascriptGenerator.valueToCode(block, 'VALUE', Order.NONE) || 'null';
code += javascriptGenerator.INDENT + 'return ' + value + ';\n';
} else {
code += JavaScript.INDENT + 'return;\n';
code += javascriptGenerator.INDENT + 'return;\n';
}
code += '}\n';
return code;

227
generators/javascript/text.js
View File

@@ -12,7 +12,7 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.JavaScript.texts');
import {NameType} from '../../core/names.js';
import {javascriptGenerator as JavaScript} from '../javascript.js';
import {Order, javascriptGenerator} from '../javascript.js';
/**
@@ -29,9 +29,9 @@ const strRegExp = /^\s*'([^']|\\')*'\s*$/;
*/
const forceString = function(value) {
if (strRegExp.test(value)) {
return [value, JavaScript.ORDER_ATOMIC];
return [value, Order.ATOMIC];
}
return ['String(' + value + ')', JavaScript.ORDER_FUNCTION_CALL];
return ['String(' + value + ')', Order.FUNCTION_CALL];
};
/**
@@ -53,158 +53,162 @@ const getSubstringIndex = function(stringName, where, opt_at) {
}
};
JavaScript.forBlock['text'] = function(block) {
javascriptGenerator.forBlock['text'] = function(block) {
// Text value.
const code = JavaScript.quote_(block.getFieldValue('TEXT'));
return [code, JavaScript.ORDER_ATOMIC];
const code = javascriptGenerator.quote_(block.getFieldValue('TEXT'));
return [code, Order.ATOMIC];
};
JavaScript.forBlock['text_multiline'] = function(block) {
javascriptGenerator.forBlock['text_multiline'] = function(block) {
// Text value.
const code = JavaScript.multiline_quote_(block.getFieldValue('TEXT'));
const order = code.indexOf('+') !== -1 ? JavaScript.ORDER_ADDITION :
JavaScript.ORDER_ATOMIC;
const code =
javascriptGenerator.multiline_quote_(block.getFieldValue('TEXT'));
const order = code.indexOf('+') !== -1 ? Order.ADDITION :
Order.ATOMIC;
return [code, order];
};
JavaScript.forBlock['text_join'] = function(block) {
javascriptGenerator.forBlock['text_join'] = function(block) {
// Create a string made up of any number of elements of any type.
switch (block.itemCount_) {
case 0:
return ["''", JavaScript.ORDER_ATOMIC];
return ["''", Order.ATOMIC];
case 1: {
const element = JavaScript.valueToCode(block, 'ADD0',
JavaScript.ORDER_NONE) || "''";
const element = javascriptGenerator.valueToCode(block, 'ADD0',
Order.NONE) || "''";
const codeAndOrder = forceString(element);
return codeAndOrder;
}
case 2: {
const element0 = JavaScript.valueToCode(block, 'ADD0',
JavaScript.ORDER_NONE) || "''";
const element1 = JavaScript.valueToCode(block, 'ADD1',
JavaScript.ORDER_NONE) || "''";
const element0 = javascriptGenerator.valueToCode(block, 'ADD0',
Order.NONE) || "''";
const element1 = javascriptGenerator.valueToCode(block, 'ADD1',
Order.NONE) || "''";
const code = forceString(element0)[0] +
' + ' + forceString(element1)[0];
return [code, JavaScript.ORDER_ADDITION];
return [code, Order.ADDITION];
}
default: {
const elements = new Array(block.itemCount_);
for (let i = 0; i < block.itemCount_; i++) {
elements[i] = JavaScript.valueToCode(block, 'ADD' + i,
JavaScript.ORDER_NONE) || "''";
elements[i] = javascriptGenerator.valueToCode(block, 'ADD' + i,
Order.NONE) || "''";
}
const code = '[' + elements.join(',') + '].join(\'\')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
}
}
};
JavaScript.forBlock['text_append'] = function(block) {
javascriptGenerator.forBlock['text_append'] = function(block) {
// Append to a variable in place.
const varName = JavaScript.nameDB_.getName(
const varName = javascriptGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
const value = JavaScript.valueToCode(block, 'TEXT',
JavaScript.ORDER_NONE) || "''";
const value = javascriptGenerator.valueToCode(block, 'TEXT',
Order.NONE) || "''";
const code = varName + ' += ' +
forceString(value)[0] + ';\n';
return code;
};
JavaScript.forBlock['text_length'] = function(block) {
javascriptGenerator.forBlock['text_length'] = function(block) {
// String or array length.
const text = JavaScript.valueToCode(block, 'VALUE',
JavaScript.ORDER_MEMBER) || "''";
return [text + '.length', JavaScript.ORDER_MEMBER];
const text = javascriptGenerator.valueToCode(block, 'VALUE',
Order.MEMBER) || "''";
return [text + '.length', Order.MEMBER];
};
JavaScript.forBlock['text_isEmpty'] = function(block) {
javascriptGenerator.forBlock['text_isEmpty'] = function(block) {
// Is the string null or array empty?
const text = JavaScript.valueToCode(block, 'VALUE',
JavaScript.ORDER_MEMBER) || "''";
return ['!' + text + '.length', JavaScript.ORDER_LOGICAL_NOT];
const text = javascriptGenerator.valueToCode(block, 'VALUE',
Order.MEMBER) || "''";
return ['!' + text + '.length', Order.LOGICAL_NOT];
};
JavaScript.forBlock['text_indexOf'] = function(block) {
javascriptGenerator.forBlock['text_indexOf'] = function(block) {
// Search the text for a substring.
const operator = block.getFieldValue('END') === 'FIRST' ?
'indexOf' : 'lastIndexOf';
const substring = JavaScript.valueToCode(block, 'FIND',
JavaScript.ORDER_NONE) || "''";
const text = JavaScript.valueToCode(block, 'VALUE',
JavaScript.ORDER_MEMBER) || "''";
const substring = javascriptGenerator.valueToCode(block, 'FIND',
Order.NONE) || "''";
const text = javascriptGenerator.valueToCode(block, 'VALUE',
Order.MEMBER) || "''";
const code = text + '.' + operator + '(' + substring + ')';
// Adjust index if using one-based indices.
if (block.workspace.options.oneBasedIndex) {
return [code + ' + 1', JavaScript.ORDER_ADDITION];
return [code + ' + 1', Order.ADDITION];
}
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['text_charAt'] = function(block) {
javascriptGenerator.forBlock['text_charAt'] = function(block) {
// Get letter at index.
// Note: Until January 2013 this block did not have the WHERE input.
const where = block.getFieldValue('WHERE') || 'FROM_START';
const textOrder = (where === 'RANDOM') ? JavaScript.ORDER_NONE :
JavaScript.ORDER_MEMBER;
const text = JavaScript.valueToCode(block, 'VALUE', textOrder) || "''";
const textOrder = (where === 'RANDOM') ? Order.NONE :
Order.MEMBER;
const text =
javascriptGenerator.valueToCode(block, 'VALUE', textOrder) || "''";
switch (where) {
case 'FIRST': {
const code = text + '.charAt(0)';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
}
case 'LAST': {
const code = text + '.slice(-1)';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
}
case 'FROM_START': {
const at = JavaScript.getAdjusted(block, 'AT');
const at = javascriptGenerator.getAdjusted(block, 'AT');
// Adjust index if using one-based indices.
const code = text + '.charAt(' + at + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
}
case 'FROM_END': {
const at = JavaScript.getAdjusted(block, 'AT', 1, true);
const at = javascriptGenerator.getAdjusted(block, 'AT', 1, true);
const code = text + '.slice(' + at + ').charAt(0)';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
}
case 'RANDOM': {
const functionName = JavaScript.provideFunction_('textRandomLetter', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(text) {
const functionName =
javascriptGenerator.provideFunction_('textRandomLetter', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(text) {
var x = Math.floor(Math.random() * text.length);
return text[x];
}
`);
const code = functionName + '(' + text + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
}
}
throw Error('Unhandled option (text_charAt).');
};
JavaScript.forBlock['text_getSubstring'] = function(block) {
javascriptGenerator.forBlock['text_getSubstring'] = function(block) {
// Get substring.
const where1 = block.getFieldValue('WHERE1');
const where2 = block.getFieldValue('WHERE2');
const requiresLengthCall = (where1 !== 'FROM_END' && where1 !== 'LAST' &&
where2 !== 'FROM_END' && where2 !== 'LAST');
const textOrder = requiresLengthCall ? JavaScript.ORDER_MEMBER :
JavaScript.ORDER_NONE;
const text = JavaScript.valueToCode(block, 'STRING', textOrder) || "''";
const textOrder = requiresLengthCall ? Order.MEMBER :
Order.NONE;
const text =
javascriptGenerator.valueToCode(block, 'STRING', textOrder) || "''";
let code;
if (where1 === 'FIRST' && where2 === 'LAST') {
code = text;
return [code, JavaScript.ORDER_NONE];
return [code, Order.NONE];
} else if (text.match(/^'?\w+'?$/) || requiresLengthCall) {
// If the text is a variable or literal or doesn't require a call for
// length, don't generate a helper function.
let at1;
switch (where1) {
case 'FROM_START':
at1 = JavaScript.getAdjusted(block, 'AT1');
at1 = javascriptGenerator.getAdjusted(block, 'AT1');
break;
case 'FROM_END':
at1 = JavaScript.getAdjusted(block, 'AT1', 1, false,
JavaScript.ORDER_SUBTRACTION);
at1 = javascriptGenerator.getAdjusted(block, 'AT1', 1, false,
Order.SUBTRACTION);
at1 = text + '.length - ' + at1;
break;
case 'FIRST':
@@ -216,11 +220,11 @@ JavaScript.forBlock['text_getSubstring'] = function(block) {
let at2;
switch (where2) {
case 'FROM_START':
at2 = JavaScript.getAdjusted(block, 'AT2', 1);
at2 = javascriptGenerator.getAdjusted(block, 'AT2', 1);
break;
case 'FROM_END':
at2 = JavaScript.getAdjusted(block, 'AT2', 0, false,
JavaScript.ORDER_SUBTRACTION);
at2 = javascriptGenerator.getAdjusted(block, 'AT2', 0, false,
Order.SUBTRACTION);
at2 = text + '.length - ' + at2;
break;
case 'LAST':
@@ -231,8 +235,8 @@ JavaScript.forBlock['text_getSubstring'] = function(block) {
}
code = text + '.slice(' + at1 + ', ' + at2 + ')';
} else {
const at1 = JavaScript.getAdjusted(block, 'AT1');
const at2 = JavaScript.getAdjusted(block, 'AT2');
const at1 = javascriptGenerator.getAdjusted(block, 'AT1');
const at2 = javascriptGenerator.getAdjusted(block, 'AT2');
const wherePascalCase = {'FIRST': 'First', 'LAST': 'Last',
'FROM_START': 'FromStart', 'FROM_END': 'FromEnd'};
// The value for 'FROM_END' and'FROM_START' depends on `at` so
@@ -241,9 +245,9 @@ JavaScript.forBlock['text_getSubstring'] = function(block) {
(where1 === 'FROM_END' || where1 === 'FROM_START') ? ', at1' : '';
const at2Param =
(where2 === 'FROM_END' || where2 === 'FROM_START') ? ', at2' : '';
const functionName = JavaScript.provideFunction_(
const functionName = javascriptGenerator.provideFunction_(
'subsequence' + wherePascalCase[where1] + wherePascalCase[where2], `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(sequence${at1Param}${at2Param}) {
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(sequence${at1Param}${at2Param}) {
var start = ${getSubstringIndex('sequence', where1, 'at1')};
var end = ${getSubstringIndex('sequence', where2, 'at2')} + 1;
return sequence.slice(start, end);
@@ -256,10 +260,10 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(sequence${at1Param}${at2Param}
((where2 === 'FROM_END' || where2 === 'FROM_START') ? ', ' + at2 : '') +
')';
}
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['text_changeCase'] = function(block) {
javascriptGenerator.forBlock['text_changeCase'] = function(block) {
// Change capitalization.
const OPERATORS = {
'UPPERCASE': '.toUpperCase()',
@@ -267,26 +271,28 @@ JavaScript.forBlock['text_changeCase'] = function(block) {
'TITLECASE': null,
};
const operator = OPERATORS[block.getFieldValue('CASE')];
const textOrder = operator ? JavaScript.ORDER_MEMBER : JavaScript.ORDER_NONE;
const text = JavaScript.valueToCode(block, 'TEXT', textOrder) || "''";
const textOrder = operator ? Order.MEMBER : Order.NONE;
const text =
javascriptGenerator.valueToCode(block, 'TEXT', textOrder) || "''";
let code;
if (operator) {
// Upper and lower case are functions built into JavaScript.
// Upper and lower case are functions built into javascriptGenerator.
code = text + operator;
} else {
// Title case is not a native JavaScript function. Define one.
const functionName = JavaScript.provideFunction_('textToTitleCase', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(str) {
const functionName =
javascriptGenerator.provideFunction_('textToTitleCase', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(str) {
return str.replace(/\\S+/g,
function(txt) {return txt[0].toUpperCase() + txt.substring(1).toLowerCase();});
}
`);
code = functionName + '(' + text + ')';
}
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['text_trim'] = function(block) {
javascriptGenerator.forBlock['text_trim'] = function(block) {
// Trim spaces.
const OPERATORS = {
'LEFT': ".replace(/^[\\s\\xa0]+/, '')",
@@ -294,45 +300,46 @@ JavaScript.forBlock['text_trim'] = function(block) {
'BOTH': '.trim()',
};
const operator = OPERATORS[block.getFieldValue('MODE')];
const text = JavaScript.valueToCode(block, 'TEXT',
JavaScript.ORDER_MEMBER) || "''";
return [text + operator, JavaScript.ORDER_FUNCTION_CALL];
const text = javascriptGenerator.valueToCode(block, 'TEXT',
Order.MEMBER) || "''";
return [text + operator, Order.FUNCTION_CALL];
};
JavaScript.forBlock['text_print'] = function(block) {
javascriptGenerator.forBlock['text_print'] = function(block) {
// Print statement.
const msg = JavaScript.valueToCode(block, 'TEXT',
JavaScript.ORDER_NONE) || "''";
const msg = javascriptGenerator.valueToCode(block, 'TEXT',
Order.NONE) || "''";
return 'window.alert(' + msg + ');\n';
};
JavaScript.forBlock['text_prompt_ext'] = function(block) {
javascriptGenerator.forBlock['text_prompt_ext'] = function(block) {
// Prompt function.
let msg;
if (block.getField('TEXT')) {
// Internal message.
msg = JavaScript.quote_(block.getFieldValue('TEXT'));
msg = javascriptGenerator.quote_(block.getFieldValue('TEXT'));
} else {
// External message.
msg = JavaScript.valueToCode(block, 'TEXT', JavaScript.ORDER_NONE) || "''";
msg = javascriptGenerator.valueToCode(block, 'TEXT', Order.NONE) || "''";
}
let code = 'window.prompt(' + msg + ')';
const toNumber = block.getFieldValue('TYPE') === 'NUMBER';
if (toNumber) {
code = 'Number(' + code + ')';
}
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['text_prompt'] = JavaScript.forBlock['text_prompt_ext'];
javascriptGenerator.forBlock['text_prompt'] =
javascriptGenerator.forBlock['text_prompt_ext'];
JavaScript.forBlock['text_count'] = function(block) {
const text = JavaScript.valueToCode(block, 'TEXT',
JavaScript.ORDER_NONE) || "''";
const sub = JavaScript.valueToCode(block, 'SUB',
JavaScript.ORDER_NONE) || "''";
const functionName = JavaScript.provideFunction_('textCount', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(haystack, needle) {
javascriptGenerator.forBlock['text_count'] = function(block) {
const text = javascriptGenerator.valueToCode(block, 'TEXT',
Order.NONE) || "''";
const sub = javascriptGenerator.valueToCode(block, 'SUB',
Order.NONE) || "''";
const functionName = javascriptGenerator.provideFunction_('textCount', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(haystack, needle) {
if (needle.length === 0) {
return haystack.length + 1;
} else {
@@ -341,31 +348,31 @@ function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(haystack, needle) {
}
`);
const code = functionName + '(' + text + ', ' + sub + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['text_replace'] = function(block) {
const text = JavaScript.valueToCode(block, 'TEXT',
JavaScript.ORDER_NONE) || "''";
const from = JavaScript.valueToCode(block, 'FROM',
JavaScript.ORDER_NONE) || "''";
const to = JavaScript.valueToCode(block, 'TO', JavaScript.ORDER_NONE) || "''";
javascriptGenerator.forBlock['text_replace'] = function(block) {
const text = javascriptGenerator.valueToCode(block, 'TEXT',
Order.NONE) || "''";
const from = javascriptGenerator.valueToCode(block, 'FROM',
Order.NONE) || "''";
const to = javascriptGenerator.valueToCode(block, 'TO', Order.NONE) || "''";
// The regex escaping code below is taken from the implementation of
// goog.string.regExpEscape.
const functionName = JavaScript.provideFunction_('textReplace', `
function ${JavaScript.FUNCTION_NAME_PLACEHOLDER_}(haystack, needle, replacement) {
const functionName = javascriptGenerator.provideFunction_('textReplace', `
function ${javascriptGenerator.FUNCTION_NAME_PLACEHOLDER_}(haystack, needle, replacement) {
needle = needle.replace(/([-()\\[\\]{}+?*.$\\^|,:#<!\\\\])/g, '\\\\$1')
.replace(/\\x08/g, '\\\\x08');
return haystack.replace(new RegExp(needle, 'g'), replacement);
}
`);
const code = functionName + '(' + text + ', ' + from + ', ' + to + ')';
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};
JavaScript.forBlock['text_reverse'] = function(block) {
const text = JavaScript.valueToCode(block, 'TEXT',
JavaScript.ORDER_MEMBER) || "''";
javascriptGenerator.forBlock['text_reverse'] = function(block) {
const text = javascriptGenerator.valueToCode(block, 'TEXT',
Order.MEMBER) || "''";
const code = text + ".split('').reverse().join('')";
return [code, JavaScript.ORDER_FUNCTION_CALL];
return [code, Order.FUNCTION_CALL];
};

16
generators/javascript/variables.js
View File

@@ -12,21 +12,21 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.JavaScript.variables');
import {NameType} from '../../core/names.js';
import {javascriptGenerator as JavaScript} from '../javascript.js';
import {Order, javascriptGenerator} from '../javascript.js';
JavaScript.forBlock['variables_get'] = function(block) {
javascriptGenerator.forBlock['variables_get'] = function(block) {
// Variable getter.
const code = JavaScript.nameDB_.getName(block.getFieldValue('VAR'),
const code = javascriptGenerator.nameDB_.getName(block.getFieldValue('VAR'),
NameType.VARIABLE);
return [code, JavaScript.ORDER_ATOMIC];
return [code, Order.ATOMIC];
};
JavaScript.forBlock['variables_set'] = function(block) {
javascriptGenerator.forBlock['variables_set'] = function(block) {
// Variable setter.
const argument0 = JavaScript.valueToCode(
block, 'VALUE', JavaScript.ORDER_ASSIGNMENT) || '0';
const varName = JavaScript.nameDB_.getName(
const argument0 = javascriptGenerator.valueToCode(
block, 'VALUE', Order.ASSIGNMENT) || '0';
const varName = javascriptGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
return varName + ' = ' + argument0 + ';\n';
};

9
generators/javascript/variables_dynamic.js
View File

@@ -11,10 +11,11 @@
import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.JavaScript.variablesDynamic');
import {javascriptGenerator as JavaScript} from '../javascript.js';
import {javascriptGenerator} from '../javascript.js';
import './variables.js';
// JavaScript is dynamically typed.
JavaScript.forBlock['variables_get_dynamic'] = JavaScript.forBlock['variables_get'];
JavaScript.forBlock['variables_set_dynamic'] = JavaScript.forBlock['variables_set'];
javascriptGenerator.forBlock['variables_get_dynamic'] =
javascriptGenerator.forBlock['variables_get'];
javascriptGenerator.forBlock['variables_set_dynamic'] =
javascriptGenerator.forBlock['variables_set'];