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refactor(generators): Introduce DartGenerator class, Order enum (#7160)

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* refactor(generators): Introduce DartGenerator class, Order enum

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

* refactor(generators): Don't rename dartGenerator
This commit is contained in:
Christopher Allen
2023-06-14 00:39:12 +01:00
committed by GitHub
parent aeee278767
commit 26901654ea
10 changed files with 760 additions and 677 deletions
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512
generators/dart.js
View File

@@ -21,282 +21,296 @@ import {Names, NameType} from '../core/names.js';
import {inputTypes} from '../core/inputs/input_types.js';
/**
* Dart code generator.
* @type {!CodeGenerator}
*/
const Dart = new CodeGenerator('Dart');
/**
* List of illegal variable names.
* This is not intended to be a security feature. Blockly is 100% client-side,
* so bypassing this list is trivial. This is intended to prevent users from
* accidentally clobbering a built-in object or function.
*/
Dart.addReservedWords(
// https://www.dartlang.org/docs/spec/latest/dart-language-specification.pdf
// Section 16.1.1
'assert,break,case,catch,class,const,continue,default,do,else,enum,' +
'extends,false,final,finally,for,if,in,is,new,null,rethrow,return,super,' +
'switch,this,throw,true,try,var,void,while,with,' +
// https://api.dartlang.org/dart_core.html
'print,identityHashCode,identical,BidirectionalIterator,Comparable,' +
'double,Function,int,Invocation,Iterable,Iterator,List,Map,Match,num,' +
'Pattern,RegExp,Set,StackTrace,String,StringSink,Type,bool,DateTime,' +
'Deprecated,Duration,Expando,Null,Object,RuneIterator,Runes,Stopwatch,' +
'StringBuffer,Symbol,Uri,Comparator,AbstractClassInstantiationError,' +
'ArgumentError,AssertionError,CastError,ConcurrentModificationError,' +
'CyclicInitializationError,Error,Exception,FallThroughError,' +
'FormatException,IntegerDivisionByZeroException,NoSuchMethodError,' +
'NullThrownError,OutOfMemoryError,RangeError,StackOverflowError,' +
'StateError,TypeError,UnimplementedError,UnsupportedError'
);
/**
* Order of operation ENUMs.
* https://dart.dev/guides/language/language-tour#operators
*/
Dart.ORDER_ATOMIC = 0; // 0 "" ...
Dart.ORDER_UNARY_POSTFIX = 1; // expr++ expr-- () [] . ?.
Dart.ORDER_UNARY_PREFIX = 2; // -expr !expr ~expr ++expr --expr
Dart.ORDER_MULTIPLICATIVE = 3; // * / % ~/
Dart.ORDER_ADDITIVE = 4; // + -
Dart.ORDER_SHIFT = 5; // << >>
Dart.ORDER_BITWISE_AND = 6; // &
Dart.ORDER_BITWISE_XOR = 7; // ^
Dart.ORDER_BITWISE_OR = 8; // |
Dart.ORDER_RELATIONAL = 9; // >= > <= < as is is!
Dart.ORDER_EQUALITY = 10; // == !=
Dart.ORDER_LOGICAL_AND = 11; // &&
Dart.ORDER_LOGICAL_OR = 12; // ||
Dart.ORDER_IF_NULL = 13; // ??
Dart.ORDER_CONDITIONAL = 14; // expr ? expr : expr
Dart.ORDER_CASCADE = 15; // ..
Dart.ORDER_ASSIGNMENT = 16; // = *= /= ~/= %= += -= <<= >>= &= ^= |=
Dart.ORDER_NONE = 99; // (...)
/**
* Whether the init method has been called.
* @type {?boolean}
*/
Dart.isInitialized = false;
/**
* Initialise the database of variable names.
* @param {!Workspace} workspace Workspace to generate code from.
*/
Dart.init = function(workspace) {
// Call Blockly.CodeGenerator's init.
Object.getPrototypeOf(this).init.call(this);
if (!this.nameDB_) {
this.nameDB_ = new Names(this.RESERVED_WORDS_);
} else {
this.nameDB_.reset();
}
this.nameDB_.setVariableMap(workspace.getVariableMap());
this.nameDB_.populateVariables(workspace);
this.nameDB_.populateProcedures(workspace);
const defvars = [];
// Add developer variables (not created or named by the user).
const devVarList = Variables.allDeveloperVariables(workspace);
for (let i = 0; i < devVarList.length; i++) {
defvars.push(this.nameDB_.getName(devVarList[i],
NameType.DEVELOPER_VARIABLE));
}
// Add user variables, but only ones that are being used.
const variables = Variables.allUsedVarModels(workspace);
for (let i = 0; i < variables.length; i++) {
defvars.push(this.nameDB_.getName(variables[i].getId(),
NameType.VARIABLE));
}
// Declare all of the variables.
if (defvars.length) {
this.definitions_['variables'] =
'var ' + defvars.join(', ') + ';';
}
this.isInitialized = true;
export const Order = {
ATOMIC: 0, // 0 "" ...
UNARY_POSTFIX: 1, // expr++ expr-- () [] . ?.
UNARY_PREFIX: 2, // -expr !expr ~expr ++expr --expr
MULTIPLICATIVE: 3, // * / % ~/
ADDITIVE: 4, // + -
SHIFT: 5, // << >>
BITWISE_AND: 6, // &
BITWISE_XOR: 7, // ^
BITWISE_OR: 8, // |
RELATIONAL: 9, // >= > <= < as is is!
EQUALITY: 10, // == !=
LOGICAL_AND: 11, // &&
LOGICAL_OR: 12, // ||
IF_NULL: 13, // ??
CONDITIONAL: 14, // expr ? expr : expr
CASCADE: 15, // ..
ASSIGNMENT: 16, // = *= /= ~/= %= += -= <<= >>= &= ^= |=
NONE: 99, // (...)
};
/**
* Prepend the generated code with import statements and variable definitions.
* @param {string} code Generated code.
* @return {string} Completed code.
* Dart code generator class.
*/
Dart.finish = function(code) {
// Indent every line.
if (code) {
code = this.prefixLines(code, this.INDENT);
}
code = 'main() {\n' + code + '}';
export class DartGenerator extends CodeGenerator {
constructor(name) {
super(name ?? 'Dart');
this.isInitialized = false;
// Convert the definitions dictionary into a list.
const imports = [];
const definitions = [];
for (let name in this.definitions_) {
const def = this.definitions_[name];
if (def.match(/^import\s/)) {
imports.push(def);
} else {
definitions.push(def);
// Copy Order values onto instance for backwards compatibility
// while ensuring they are not part of the publically-advertised
// API.
//
// TODO(#7085): deprecate these in due course. (Could initially
// replace data properties with get accessors that call
// deprecate.warn().)
for (const key in Order) {
this['ORDER_' + key] = Order[key];
}
// List of illegal variable names. This is not intended to be a
// security feature. Blockly is 100% client-side, so bypassing
// this list is trivial. This is intended to prevent users from
// accidentally clobbering a built-in object or function.
this.addReservedWords(
// https://www.dartlang.org/docs/spec/latest/dart-language-specification.pdf
// Section 16.1.1
'assert,break,case,catch,class,const,continue,default,do,else,enum,' +
'extends,false,final,finally,for,if,in,is,new,null,rethrow,return,' +
'super,switch,this,throw,true,try,var,void,while,with,' +
// https://api.dartlang.org/dart_core.html
'print,identityHashCode,identical,BidirectionalIterator,Comparable,' +
'double,Function,int,Invocation,Iterable,Iterator,List,Map,Match,num,' +
'Pattern,RegExp,Set,StackTrace,String,StringSink,Type,bool,DateTime,' +
'Deprecated,Duration,Expando,Null,Object,RuneIterator,Runes,Stopwatch,' +
'StringBuffer,Symbol,Uri,Comparator,AbstractClassInstantiationError,' +
'ArgumentError,AssertionError,CastError,ConcurrentModificationError,' +
'CyclicInitializationError,Error,Exception,FallThroughError,' +
'FormatException,IntegerDivisionByZeroException,NoSuchMethodError,' +
'NullThrownError,OutOfMemoryError,RangeError,StackOverflowError,' +
'StateError,TypeError,UnimplementedError,UnsupportedError'
);
}
// Call Blockly.CodeGenerator's finish.
code = Object.getPrototypeOf(this).finish.call(this, code);
this.isInitialized = false;
this.nameDB_.reset();
const allDefs = imports.join('\n') + '\n\n' + definitions.join('\n\n');
return allDefs.replace(/\n\n+/g, '\n\n').replace(/\n*$/, '\n\n\n') + code;
};
/**
* Initialise the database of variable names.
* @param {!Workspace} workspace Workspace to generate code from.
*/
init(workspace) {
super.init();
/**
* Naked values are top-level blocks with outputs that aren't plugged into
* anything. A trailing semicolon is needed to make this legal.
* @param {string} line Line of generated code.
* @return {string} Legal line of code.
*/
Dart.scrubNakedValue = function(line) {
return line + ';\n';
};
if (!this.nameDB_) {
this.nameDB_ = new Names(this.RESERVED_WORDS_);
} else {
this.nameDB_.reset();
}
/**
* Encode a string as a properly escaped Dart string, complete with quotes.
* @param {string} string Text to encode.
* @return {string} Dart string.
* @protected
*/
Dart.quote_ = function(string) {
// Can't use goog.string.quote since $ must also be escaped.
string = string.replace(/\\/g, '\\\\')
.replace(/\n/g, '\\\n')
.replace(/\$/g, '\\$')
.replace(/'/g, '\\\'');
return '\'' + string + '\'';
};
this.nameDB_.setVariableMap(workspace.getVariableMap());
this.nameDB_.populateVariables(workspace);
this.nameDB_.populateProcedures(workspace);
/**
* Encode a string as a properly escaped multiline Dart string, complete with
* quotes.
* @param {string} string Text to encode.
* @return {string} Dart string.
* @protected
*/
Dart.multiline_quote_ = function (string) {
const lines = string.split(/\n/g).map(this.quote_);
// Join with the following, plus a newline:
// + '\n' +
return lines.join(' + \'\\n\' + \n');
};
const defvars = [];
// Add developer variables (not created or named by the user).
const devVarList = Variables.allDeveloperVariables(workspace);
for (let i = 0; i < devVarList.length; i++) {
defvars.push(this.nameDB_.getName(devVarList[i],
NameType.DEVELOPER_VARIABLE));
}
/**
* Common tasks for generating Dart from blocks.
* Handles comments for the specified block and any connected value blocks.
* Calls any statements following this block.
* @param {!Block} block The current block.
* @param {string} code The Dart code created for this block.
* @param {boolean=} opt_thisOnly True to generate code for only this statement.
* @return {string} Dart code with comments and subsequent blocks added.
* @protected
*/
Dart.scrub_ = function(block, code, opt_thisOnly) {
let commentCode = '';
// Only collect comments for blocks that aren't inline.
if (!block.outputConnection || !block.outputConnection.targetConnection) {
// Collect comment for this block.
let comment = block.getCommentText();
if (comment) {
comment = stringUtils.wrap(comment, this.COMMENT_WRAP - 3);
if (block.getProcedureDef) {
// Use documentation comment for function comments.
commentCode += this.prefixLines(comment + '\n', '/// ');
// Add user variables, but only ones that are being used.
const variables = Variables.allUsedVarModels(workspace);
for (let i = 0; i < variables.length; i++) {
defvars.push(this.nameDB_.getName(variables[i].getId(),
NameType.VARIABLE));
}
// Declare all of the variables.
if (defvars.length) {
this.definitions_['variables'] =
'var ' + defvars.join(', ') + ';';
}
this.isInitialized = true;
}
/**
* Prepend the generated code with import statements and variable definitions.
* @param {string} code Generated code.
* @return {string} Completed code.
*/
finish(code) {
// Indent every line.
if (code) {
code = this.prefixLines(code, this.INDENT);
}
code = 'main() {\n' + code + '}';
// Convert the definitions dictionary into a list.
const imports = [];
const definitions = [];
for (let name in this.definitions_) {
const def = this.definitions_[name];
if (def.match(/^import\s/)) {
imports.push(def);
} else {
commentCode += this.prefixLines(comment + '\n', '// ');
definitions.push(def);
}
}
// Collect comments for all value arguments.
// Don't collect comments for nested statements.
for (let i = 0; i < block.inputList.length; i++) {
if (block.inputList[i].type === inputTypes.VALUE) {
const childBlock = block.inputList[i].connection.targetBlock();
if (childBlock) {
comment = this.allNestedComments(childBlock);
if (comment) {
commentCode += this.prefixLines(comment, '// ');
// Call Blockly.CodeGenerator's finish.
code = super.finish(code);
this.isInitialized = false;
this.nameDB_.reset();
const allDefs = imports.join('\n') + '\n\n' + definitions.join('\n\n');
return allDefs.replace(/\n\n+/g, '\n\n').replace(/\n*$/, '\n\n\n') + code;
}
/**
* Naked values are top-level blocks with outputs that aren't plugged into
* anything. A trailing semicolon is needed to make this legal.
* @param {string} line Line of generated code.
* @return {string} Legal line of code.
*/
scrubNakedValue(line) {
return line + ';\n';
}
/**
* Encode a string as a properly escaped Dart string, complete with quotes.
* @param {string} string Text to encode.
* @return {string} Dart string.
* @protected
*/
quote_(string) {
// Can't use goog.string.quote since $ must also be escaped.
string = string.replace(/\\/g, '\\\\')
.replace(/\n/g, '\\\n')
.replace(/\$/g, '\\$')
.replace(/'/g, '\\\'');
return '\'' + string + '\'';
}
/**
* Encode a string as a properly escaped multiline Dart string, complete with
* quotes.
* @param {string} string Text to encode.
* @return {string} Dart string.
* @protected
*/
multiline_quote_(string) {
const lines = string.split(/\n/g).map(this.quote_);
// Join with the following, plus a newline:
// + '\n' +
return lines.join(' + \'\\n\' + \n');
}
/**
* Common tasks for generating Dart from blocks.
* Handles comments for the specified block and any connected value blocks.
* Calls any statements following this block.
* @param {!Block} block The current block.
* @param {string} code The Dart code created for this block.
* @param {boolean=} opt_thisOnly True to generate code for only this
* statement.
* @return {string} Dart code with comments and subsequent blocks added.
* @protected
*/
scrub_(block, code, opt_thisOnly) {
let commentCode = '';
// Only collect comments for blocks that aren't inline.
if (!block.outputConnection || !block.outputConnection.targetConnection) {
// Collect comment for this block.
let comment = block.getCommentText();
if (comment) {
comment = stringUtils.wrap(comment, this.COMMENT_WRAP - 3);
if (block.getProcedureDef) {
// Use documentation comment for function comments.
commentCode += this.prefixLines(comment + '\n', '/// ');
} else {
commentCode += this.prefixLines(comment + '\n', '// ');
}
}
// Collect comments for all value arguments.
// Don't collect comments for nested statements.
for (let i = 0; i < block.inputList.length; i++) {
if (block.inputList[i].type === inputTypes.VALUE) {
const childBlock = block.inputList[i].connection.targetBlock();
if (childBlock) {
comment = this.allNestedComments(childBlock);
if (comment) {
commentCode += this.prefixLines(comment, '// ');
}
}
}
}
}
}
const nextBlock = block.nextConnection && block.nextConnection.targetBlock();
const nextCode = opt_thisOnly ? '' : this.blockToCode(nextBlock);
return commentCode + code + nextCode;
};
/**
* Gets a property and adjusts the value while taking into account indexing.
* @param {!Block} block The block.
* @param {string} atId The property ID of the element to get.
* @param {number=} opt_delta Value to add.
* @param {boolean=} opt_negate Whether to negate the value.
* @param {number=} opt_order The highest order acting on this value.
* @return {string|number}
*/
Dart.getAdjusted = function(block, atId, opt_delta, opt_negate,
opt_order) {
let delta = opt_delta || 0;
let order = opt_order || this.ORDER_NONE;
if (block.workspace.options.oneBasedIndex) {
delta--;
}
const defaultAtIndex = block.workspace.options.oneBasedIndex ? '1' : '0';
/** @type {number} */
let outerOrder;
let innerOrder;
if (delta) {
outerOrder = this.ORDER_ADDITIVE;
innerOrder = this.ORDER_ADDITIVE;
} else if (opt_negate) {
outerOrder = this.ORDER_UNARY_PREFIX;
innerOrder = this.ORDER_UNARY_PREFIX;
} else {
outerOrder = order;
const nextBlock =
block.nextConnection && block.nextConnection.targetBlock();
const nextCode = opt_thisOnly ? '' : this.blockToCode(nextBlock);
return commentCode + code + nextCode;
}
/** @type {string|number} */
let at = this.valueToCode(block, atId, outerOrder) || defaultAtIndex;
if (stringUtils.isNumber(at)) {
// If the index is a naked number, adjust it right now.
at = parseInt(at, 10) + delta;
if (opt_negate) {
at = -at;
/**
* Gets a property and adjusts the value while taking into account indexing.
* @param {!Block} block The block.
* @param {string} atId The property ID of the element to get.
* @param {number=} opt_delta Value to add.
* @param {boolean=} opt_negate Whether to negate the value.
* @param {number=} opt_order The highest order acting on this value.
* @return {string|number}
*/
getAdjusted(block, atId, opt_delta, opt_negate, opt_order) {
let delta = opt_delta || 0;
let order = opt_order || this.ORDER_NONE;
if (block.workspace.options.oneBasedIndex) {
delta--;
}
} else {
// If the index is dynamic, adjust it in code.
if (delta > 0) {
at = at + ' + ' + delta;
} else if (delta < 0) {
at = at + ' - ' + -delta;
const defaultAtIndex = block.workspace.options.oneBasedIndex ? '1' : '0';
/** @type {number} */
let outerOrder;
let innerOrder;
if (delta) {
outerOrder = this.ORDER_ADDITIVE;
innerOrder = this.ORDER_ADDITIVE;
} else if (opt_negate) {
outerOrder = this.ORDER_UNARY_PREFIX;
innerOrder = this.ORDER_UNARY_PREFIX;
} else {
outerOrder = order;
}
if (opt_negate) {
if (delta) {
at = '-(' + at + ')';
} else {
at = '-' + at;
/** @type {string|number} */
let at = this.valueToCode(block, atId, outerOrder) || defaultAtIndex;
if (stringUtils.isNumber(at)) {
// If the index is a naked number, adjust it right now.
at = parseInt(at, 10) + delta;
if (opt_negate) {
at = -at;
}
} else {
// If the index is dynamic, adjust it in code.
if (delta > 0) {
at = at + ' + ' + delta;
} else if (delta < 0) {
at = at + ' - ' + -delta;
}
if (opt_negate) {
if (delta) {
at = '-(' + at + ')';
} else {
at = '-' + at;
}
}
innerOrder = Math.floor(innerOrder);
order = Math.floor(order);
if (innerOrder && order >= innerOrder) {
at = '(' + at + ')';
}
}
innerOrder = Math.floor(innerOrder);
order = Math.floor(order);
if (innerOrder && order >= innerOrder) {
at = '(' + at + ')';
}
return at;
}
return at;
};
export {Dart as dartGenerator};
}
/**
* Dart code generator.
* @type {!DartGenerator}
*/
export const dartGenerator = new DartGenerator();

61
generators/dart/colour.js
View File

@@ -11,22 +11,23 @@
import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.Dart.colour');
import {dartGenerator as Dart} from '../dart.js';
import {dartGenerator, Order} from '../dart.js';
Dart.addReservedWords('Math');
dartGenerator.addReservedWords('Math');
Dart.forBlock['colour_picker'] = function(block) {
dartGenerator.forBlock['colour_picker'] = function(block) {
// Colour picker.
const code = Dart.quote_(block.getFieldValue('COLOUR'));
return [code, Dart.ORDER_ATOMIC];
const code = dartGenerator.quote_(block.getFieldValue('COLOUR'));
return [code, Order.ATOMIC];
};
Dart.forBlock['colour_random'] = function(block) {
dartGenerator.forBlock['colour_random'] = function(block) {
// Generate a random colour.
Dart.definitions_['import_dart_math'] = "import 'dart:math' as Math;";
const functionName = Dart.provideFunction_('colour_random', `
String ${Dart.FUNCTION_NAME_PLACEHOLDER_}() {
dartGenerator.definitions_['import_dart_math'] =
"import 'dart:math' as Math;";
const functionName = dartGenerator.provideFunction_('colour_random', `
String ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}() {
String hex = '0123456789abcdef';
var rnd = new Math.Random();
return '#\${hex[rnd.nextInt(16)]}\${hex[rnd.nextInt(16)]}'
@@ -35,21 +36,19 @@ String ${Dart.FUNCTION_NAME_PLACEHOLDER_}() {
}
`);
const code = functionName + '()';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['colour_rgb'] = function(block) {
dartGenerator.forBlock['colour_rgb'] = function(block) {
// Compose a colour from RGB components expressed as percentages.
const red = Dart.valueToCode(block, 'RED',
Dart.ORDER_NONE) || 0;
const green = Dart.valueToCode(block, 'GREEN',
Dart.ORDER_NONE) || 0;
const blue = Dart.valueToCode(block, 'BLUE',
Dart.ORDER_NONE) || 0;
const red = dartGenerator.valueToCode(block, 'RED', Order.NONE) || 0;
const green = dartGenerator.valueToCode(block, 'GREEN', Order.NONE) || 0;
const blue = dartGenerator.valueToCode(block, 'BLUE', Order.NONE) || 0;
Dart.definitions_['import_dart_math'] = "import 'dart:math' as Math;";
const functionName = Dart.provideFunction_('colour_rgb', `
String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(num r, num g, num b) {
dartGenerator.definitions_['import_dart_math'] =
"import 'dart:math' as Math;";
const functionName = dartGenerator.provideFunction_('colour_rgb', `
String ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(num r, num g, num b) {
num rn = (Math.max(Math.min(r, 100), 0) * 2.55).round();
String rs = rn.toInt().toRadixString(16);
rs = '0$rs';
@@ -66,18 +65,22 @@ String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(num r, num g, num b) {
}
`);
const code = functionName + '(' + red + ', ' + green + ', ' + blue + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['colour_blend'] = function(block) {
dartGenerator.forBlock['colour_blend'] = function(block) {
// Blend two colours together.
const c1 = Dart.valueToCode(block, 'COLOUR1', Dart.ORDER_NONE) || "'#000000'";
const c2 = Dart.valueToCode(block, 'COLOUR2', Dart.ORDER_NONE) || "'#000000'";
const ratio = Dart.valueToCode(block, 'RATIO', Dart.ORDER_NONE) || 0.5;
const c1 =
dartGenerator.valueToCode(block, 'COLOUR1', Order.NONE) || "'#000000'";
const c2 =
dartGenerator.valueToCode(block, 'COLOUR2', Order.NONE) || "'#000000'";
const ratio =
dartGenerator.valueToCode(block, 'RATIO', Order.NONE) || 0.5;
Dart.definitions_['import_dart_math'] = "import 'dart:math' as Math;";
const functionName = Dart.provideFunction_('colour_blend', `
String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String c1, String c2, num ratio) {
dartGenerator.definitions_['import_dart_math'] =
"import 'dart:math' as Math;";
const functionName = dartGenerator.provideFunction_('colour_blend', `
String ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(String c1, String c2, num ratio) {
ratio = Math.max(Math.min(ratio, 1), 0);
int r1 = int.parse('0x\${c1.substring(1, 3)}');
int g1 = int.parse('0x\${c1.substring(3, 5)}');
@@ -101,5 +104,5 @@ String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String c1, String c2, num ratio) {
}
`);
const code = functionName + '(' + c1 + ', ' + c2 + ', ' + ratio + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};

193
generators/dart/lists.js
View File

@@ -12,75 +12,79 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.Dart.lists');
import {NameType} from '../../core/names.js';
import {dartGenerator as Dart} from '../dart.js';
import {dartGenerator, Order} from '../dart.js';
Dart.addReservedWords('Math');
dartGenerator.addReservedWords('Math');
Dart.forBlock['lists_create_empty'] = function(block) {
dartGenerator.forBlock['lists_create_empty'] = function(block) {
// Create an empty list.
return ['[]', Dart.ORDER_ATOMIC];
return ['[]', Order.ATOMIC];
};
Dart.forBlock['lists_create_with'] = function(block) {
dartGenerator.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] = Dart.valueToCode(block, 'ADD' + i, Dart.ORDER_NONE) || 'null';
elements[i] =
dartGenerator.valueToCode(block, 'ADD' + i, Order.NONE) || 'null';
}
const code = '[' + elements.join(', ') + ']';
return [code, Dart.ORDER_ATOMIC];
return [code, Order.ATOMIC];
};
Dart.forBlock['lists_repeat'] = function(block) {
dartGenerator.forBlock['lists_repeat'] = function(block) {
// Create a list with one element repeated.
const element = Dart.valueToCode(block, 'ITEM', Dart.ORDER_NONE) || 'null';
const repeatCount = Dart.valueToCode(block, 'NUM', Dart.ORDER_NONE) || '0';
const element =
dartGenerator.valueToCode(block, 'ITEM', Order.NONE) || 'null';
const repeatCount =
dartGenerator.valueToCode(block, 'NUM', Order.NONE) || '0';
const code = 'new List.filled(' + repeatCount + ', ' + element + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['lists_length'] = function(block) {
dartGenerator.forBlock['lists_length'] = function(block) {
// String or array length.
const list =
Dart.valueToCode(block, 'VALUE', Dart.ORDER_UNARY_POSTFIX) || '[]';
return [list + '.length', Dart.ORDER_UNARY_POSTFIX];
dartGenerator.valueToCode(block, 'VALUE', Order.UNARY_POSTFIX) || '[]';
return [list + '.length', Order.UNARY_POSTFIX];
};
Dart.forBlock['lists_isEmpty'] = function(block) {
dartGenerator.forBlock['lists_isEmpty'] = function(block) {
// Is the string null or array empty?
const list =
Dart.valueToCode(block, 'VALUE', Dart.ORDER_UNARY_POSTFIX) || '[]';
return [list + '.isEmpty', Dart.ORDER_UNARY_POSTFIX];
dartGenerator.valueToCode(block, 'VALUE', Order.UNARY_POSTFIX) || '[]';
return [list + '.isEmpty', Order.UNARY_POSTFIX];
};
Dart.forBlock['lists_indexOf'] = function(block) {
dartGenerator.forBlock['lists_indexOf'] = function(block) {
// Find an item in the list.
const operator =
block.getFieldValue('END') === 'FIRST' ? 'indexOf' : 'lastIndexOf';
const item = Dart.valueToCode(block, 'FIND', Dart.ORDER_NONE) || "''";
const item = dartGenerator.valueToCode(block, 'FIND', Order.NONE) || "''";
const list =
Dart.valueToCode(block, 'VALUE', Dart.ORDER_UNARY_POSTFIX) || '[]';
dartGenerator.valueToCode(block, 'VALUE', Order.UNARY_POSTFIX) || '[]';
const code = list + '.' + operator + '(' + item + ')';
if (block.workspace.options.oneBasedIndex) {
return [code + ' + 1', Dart.ORDER_ADDITIVE];
return [code + ' + 1', Order.ADDITIVE];
}
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['lists_getIndex'] = function(block) {
dartGenerator.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' || where === 'FROM_END') ?
Dart.ORDER_NONE :
Dart.ORDER_UNARY_POSTFIX;
let list = Dart.valueToCode(block, 'VALUE', listOrder) || '[]';
Order.NONE :
Order.UNARY_POSTFIX;
let list = dartGenerator.valueToCode(block, 'VALUE', listOrder) || '[]';
// Cache non-trivial values to variables to prevent repeated look-ups.
// Closure, which accesses and modifies 'list'.
function cacheList() {
const listVar = Dart.nameDB_.getDistinctName('tmp_list', NameType.VARIABLE);
const listVar =
dartGenerator.nameDB_.getDistinctName('tmp_list', NameType.VARIABLE);
const code = 'List ' + listVar + ' = ' + list + ';\n';
list = listVar;
return code;
@@ -92,10 +96,12 @@ Dart.forBlock['lists_getIndex'] = function(block) {
!list.match(/^\w+$/)) {
// `list` is an expression, so we may not evaluate it more than once.
if (where === 'RANDOM') {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
// We can use multiple statements.
let code = cacheList();
const xVar = Dart.nameDB_.getDistinctName('tmp_x', NameType.VARIABLE);
const xVar =
dartGenerator.nameDB_.getDistinctName('tmp_x', NameType.VARIABLE);
code += 'int ' + xVar + ' = new Math.Random().nextInt(' + list +
'.length);\n';
code += list + '.removeAt(' + xVar + ');\n';
@@ -103,34 +109,36 @@ Dart.forBlock['lists_getIndex'] = function(block) {
} else { // where === 'FROM_END'
if (mode === 'REMOVE') {
// We can use multiple statements.
const at = Dart.getAdjusted(block, 'AT', 1, false, Dart.ORDER_ADDITIVE);
const at =
dartGenerator.getAdjusted(block, 'AT', 1, false, Order.ADDITIVE);
let code = cacheList();
code += list + '.removeAt(' + list + '.length' +
' - ' + at + ');\n';
return code;
} else if (mode === 'GET') {
const at = Dart.getAdjusted(block, 'AT', 1);
const at = dartGenerator.getAdjusted(block, 'AT', 1);
// We need to create a procedure to avoid reevaluating values.
const functionName = Dart.provideFunction_('lists_get_from_end', `
dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List my_list, num x) {
const functionName = dartGenerator.provideFunction_('lists_get_from_end', `
dynamic ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List my_list, num x) {
x = my_list.length - x;
return my_list[x];
}
`);
const code = functionName + '(' + list + ', ' + at + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'GET_REMOVE') {
const at = Dart.getAdjusted(block, 'AT', 1);
const at = dartGenerator.getAdjusted(block, 'AT', 1);
// We need to create a procedure to avoid reevaluating values.
const functionName = Dart.provideFunction_('lists_remove_from_end', `
dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List my_list, num x) {
const functionName =
dartGenerator.provideFunction_('lists_remove_from_end', `
dynamic ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List my_list, num x) {
x = my_list.length - x;
return my_list.removeAt(x);
}
`);
const code = functionName + '(' + list + ', ' + at + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
}
} else {
@@ -140,10 +148,10 @@ dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List my_list, num x) {
case 'FIRST':
if (mode === 'GET') {
const code = list + '.first';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'GET_REMOVE') {
const code = list + '.removeAt(0)';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'REMOVE') {
return list + '.removeAt(0);\n';
}
@@ -151,36 +159,37 @@ dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List my_list, num x) {
case 'LAST':
if (mode === 'GET') {
const code = list + '.last';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'GET_REMOVE') {
const code = list + '.removeLast()';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'REMOVE') {
return list + '.removeLast();\n';
}
break;
case 'FROM_START': {
const at = Dart.getAdjusted(block, 'AT');
const at = dartGenerator.getAdjusted(block, 'AT');
if (mode === 'GET') {
const code = list + '[' + at + ']';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'GET_REMOVE') {
const code = list + '.removeAt(' + at + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'REMOVE') {
return list + '.removeAt(' + at + ');\n';
}
break;
}
case 'FROM_END': {
const at = Dart.getAdjusted(block, 'AT', 1, false, Dart.ORDER_ADDITIVE);
const at =
dartGenerator.getAdjusted(block, 'AT', 1, false, Order.ADDITIVE);
if (mode === 'GET') {
const code = list + '[' + list + '.length - ' + at + ']';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'GET_REMOVE' || mode === 'REMOVE') {
const code = list + '.removeAt(' + list + '.length - ' + at + ')';
if (mode === 'GET_REMOVE') {
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'REMOVE') {
return code + ';\n';
}
@@ -188,33 +197,36 @@ dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List my_list, num x) {
break;
}
case 'RANDOM':
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
if (mode === 'REMOVE') {
// We can use multiple statements.
const xVar = Dart.nameDB_.getDistinctName('tmp_x', NameType.VARIABLE);
const xVar =
dartGenerator.nameDB_.getDistinctName('tmp_x', NameType.VARIABLE);
let code = 'int ' + xVar + ' = new Math.Random().nextInt(' + list +
'.length);\n';
code += list + '.removeAt(' + xVar + ');\n';
return code;
} else if (mode === 'GET') {
const functionName = Dart.provideFunction_('lists_get_random_item', `
dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List my_list) {
const functionName =
dartGenerator.provideFunction_('lists_get_random_item', `
dynamic ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List my_list) {
int x = new Math.Random().nextInt(my_list.length);
return my_list[x];
}
`);
const code = functionName + '(' + list + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
} else if (mode === 'GET_REMOVE') {
const functionName =
Dart.provideFunction_('lists_remove_random_item', `
dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List my_list) {
dartGenerator.provideFunction_('lists_remove_random_item', `
dynamic ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List my_list) {
int x = new Math.Random().nextInt(my_list.length);
return my_list.removeAt(x);
}
`);
const code = functionName + '(' + list + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
break;
}
@@ -222,20 +234,23 @@ dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List my_list) {
throw Error('Unhandled combination (lists_getIndex).');
};
Dart.forBlock['lists_setIndex'] = function(block) {
dartGenerator.forBlock['lists_setIndex'] = function(block) {
// Set element at index.
// Note: Until February 2013 this block did not have MODE or WHERE inputs.
const mode = block.getFieldValue('MODE') || 'GET';
const where = block.getFieldValue('WHERE') || 'FROM_START';
let list = Dart.valueToCode(block, 'LIST', Dart.ORDER_UNARY_POSTFIX) || '[]';
const value = Dart.valueToCode(block, 'TO', Dart.ORDER_ASSIGNMENT) || 'null';
let list =
dartGenerator.valueToCode(block, 'LIST', Order.UNARY_POSTFIX) || '[]';
const value =
dartGenerator.valueToCode(block, 'TO', Order.ASSIGNMENT) || 'null';
// Cache non-trivial values to variables to prevent repeated look-ups.
// Closure, which accesses and modifies 'list'.
function cacheList() {
if (list.match(/^\w+$/)) {
return '';
}
const listVar = Dart.nameDB_.getDistinctName('tmp_list', NameType.VARIABLE);
const listVar =
dartGenerator.nameDB_.getDistinctName('tmp_list', NameType.VARIABLE);
const code = 'List ' + listVar + ' = ' + list + ';\n';
list = listVar;
return code;
@@ -258,7 +273,7 @@ Dart.forBlock['lists_setIndex'] = function(block) {
}
break;
case 'FROM_START': {
const at = Dart.getAdjusted(block, 'AT');
const at = dartGenerator.getAdjusted(block, 'AT');
if (mode === 'SET') {
return list + '[' + at + '] = ' + value + ';\n';
} else if (mode === 'INSERT') {
@@ -267,7 +282,8 @@ Dart.forBlock['lists_setIndex'] = function(block) {
break;
}
case 'FROM_END': {
const at = Dart.getAdjusted(block, 'AT', 1, false, Dart.ORDER_ADDITIVE);
const at =
dartGenerator.getAdjusted(block, 'AT', 1, false, Order.ADDITIVE);
let code = cacheList();
if (mode === 'SET') {
code += list + '[' + list + '.length - ' + at + '] = ' + value + ';\n';
@@ -280,9 +296,11 @@ Dart.forBlock['lists_setIndex'] = function(block) {
break;
}
case 'RANDOM': {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
let code = cacheList();
const xVar = Dart.nameDB_.getDistinctName('tmp_x', NameType.VARIABLE);
const xVar =
dartGenerator.nameDB_.getDistinctName('tmp_x', NameType.VARIABLE);
code += 'int ' + xVar + ' = new Math.Random().nextInt(' + list +
'.length);\n';
if (mode === 'SET') {
@@ -298,10 +316,10 @@ Dart.forBlock['lists_setIndex'] = function(block) {
throw Error('Unhandled combination (lists_setIndex).');
};
Dart.forBlock['lists_getSublist'] = function(block) {
dartGenerator.forBlock['lists_getSublist'] = function(block) {
// Get sublist.
const list =
Dart.valueToCode(block, 'LIST', Dart.ORDER_UNARY_POSTFIX) || '[]';
dartGenerator.valueToCode(block, 'LIST', Order.UNARY_POSTFIX) || '[]';
const where1 = block.getFieldValue('WHERE1');
const where2 = block.getFieldValue('WHERE2');
let code;
@@ -312,10 +330,10 @@ Dart.forBlock['lists_getSublist'] = function(block) {
let at1;
switch (where1) {
case 'FROM_START':
at1 = Dart.getAdjusted(block, 'AT1');
at1 = dartGenerator.getAdjusted(block, 'AT1');
break;
case 'FROM_END':
at1 = Dart.getAdjusted(block, 'AT1', 1, false, Dart.ORDER_ADDITIVE);
at1 = dartGenerator.getAdjusted(block, 'AT1', 1, false, Order.ADDITIVE);
at1 = list + '.length - ' + at1;
break;
case 'FIRST':
@@ -327,10 +345,10 @@ Dart.forBlock['lists_getSublist'] = function(block) {
let at2;
switch (where2) {
case 'FROM_START':
at2 = Dart.getAdjusted(block, 'AT2', 1);
at2 = dartGenerator.getAdjusted(block, 'AT2', 1);
break;
case 'FROM_END':
at2 = Dart.getAdjusted(block, 'AT2', 0, false, Dart.ORDER_ADDITIVE);
at2 = dartGenerator.getAdjusted(block, 'AT2', 0, false, Order.ADDITIVE);
at2 = list + '.length - ' + at2;
break;
case 'LAST':
@@ -345,10 +363,10 @@ Dart.forBlock['lists_getSublist'] = function(block) {
code = list + '.sublist(' + at1 + ', ' + at2 + ')';
}
} else {
const at1 = Dart.getAdjusted(block, 'AT1');
const at2 = Dart.getAdjusted(block, 'AT2');
const functionName = Dart.provideFunction_('lists_get_sublist', `
List ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List list, String where1, num at1, String where2, num at2) {
const at1 = dartGenerator.getAdjusted(block, 'AT1');
const at2 = dartGenerator.getAdjusted(block, 'AT2');
const functionName = dartGenerator.provideFunction_('lists_get_sublist', `
List ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List list, String where1, num at1, String where2, num at2) {
int getAt(String where, num at) {
if (where == 'FROM_END') {
at = list.length - 1 - at;
@@ -369,16 +387,16 @@ List ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List list, String where1, num at1, Strin
code = functionName + '(' + list + ', \'' + where1 + '\', ' + at1 + ', \'' +
where2 + '\', ' + at2 + ')';
}
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['lists_sort'] = function(block) {
dartGenerator.forBlock['lists_sort'] = function(block) {
// Block for sorting a list.
const list = Dart.valueToCode(block, 'LIST', Dart.ORDER_NONE) || '[]';
const list = dartGenerator.valueToCode(block, 'LIST', Order.NONE) || '[]';
const direction = block.getFieldValue('DIRECTION') === '1' ? 1 : -1;
const type = block.getFieldValue('TYPE');
const sortFunctionName = Dart.provideFunction_('lists_sort', `
List ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List list, String type, int direction) {
const sortFunctionName = dartGenerator.provideFunction_('lists_sort', `
List ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List list, String type, int direction) {
var compareFuncs = {
'NUMERIC': (a, b) => (direction * a.compareTo(b)).toInt(),
'TEXT': (a, b) => direction * a.toString().compareTo(b.toString()),
@@ -395,14 +413,15 @@ List ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List list, String type, int direction) {
return [
sortFunctionName + '(' + list + ', ' +
'"' + type + '", ' + direction + ')',
Dart.ORDER_UNARY_POSTFIX
Order.UNARY_POSTFIX
];
};
Dart.forBlock['lists_split'] = function(block) {
dartGenerator.forBlock['lists_split'] = function(block) {
// Block for splitting text into a list, or joining a list into text.
let input = Dart.valueToCode(block, 'INPUT', Dart.ORDER_UNARY_POSTFIX);
const delimiter = Dart.valueToCode(block, 'DELIM', Dart.ORDER_NONE) || "''";
let input = dartGenerator.valueToCode(block, 'INPUT', Order.UNARY_POSTFIX);
const delimiter =
dartGenerator.valueToCode(block, 'DELIM', Order.NONE) || "''";
const mode = block.getFieldValue('MODE');
let functionName;
if (mode === 'SPLIT') {
@@ -419,13 +438,13 @@ Dart.forBlock['lists_split'] = function(block) {
throw Error('Unknown mode: ' + mode);
}
const code = input + '.' + functionName + '(' + delimiter + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['lists_reverse'] = function(block) {
dartGenerator.forBlock['lists_reverse'] = function(block) {
// Block for reversing a list.
const list = Dart.valueToCode(block, 'LIST', Dart.ORDER_NONE) || '[]';
const list = dartGenerator.valueToCode(block, 'LIST', Order.NONE) || '[]';
// XXX What should the operator precedence be for a `new`?
const code = 'new List.from(' + list + '.reversed)';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};

75
generators/dart/logic.js
View File

@@ -11,25 +11,26 @@
import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.Dart.logic');
import {dartGenerator as Dart} from '../dart.js';
import {dartGenerator, Order} from '../dart.js';
Dart.forBlock['controls_if'] = function(block) {
dartGenerator.forBlock['controls_if'] = function(block) {
// If/elseif/else condition.
let n = 0;
let code = '', branchCode, conditionCode;
if (Dart.STATEMENT_PREFIX) {
if (dartGenerator.STATEMENT_PREFIX) {
// Automatic prefix insertion is switched off for this block. Add manually.
code += Dart.injectId(Dart.STATEMENT_PREFIX, block);
code += dartGenerator.injectId(dartGenerator.STATEMENT_PREFIX, block);
}
do {
conditionCode =
Dart.valueToCode(block, 'IF' + n, Dart.ORDER_NONE) || 'false';
branchCode = Dart.statementToCode(block, 'DO' + n);
if (Dart.STATEMENT_SUFFIX) {
dartGenerator.valueToCode(block, 'IF' + n, Order.NONE) || 'false';
branchCode = dartGenerator.statementToCode(block, 'DO' + n);
if (dartGenerator.STATEMENT_SUFFIX) {
branchCode =
Dart.prefixLines(
Dart.injectId(Dart.STATEMENT_SUFFIX, block), Dart.INDENT) +
dartGenerator.prefixLines(
dartGenerator.injectId(
dartGenerator.STATEMENT_SUFFIX, block), dartGenerator.INDENT) +
branchCode;
}
code += (n > 0 ? 'else ' : '') + 'if (' + conditionCode + ') {\n' +
@@ -37,12 +38,13 @@ Dart.forBlock['controls_if'] = function(block) {
n++;
} while (block.getInput('IF' + n));
if (block.getInput('ELSE') || Dart.STATEMENT_SUFFIX) {
branchCode = Dart.statementToCode(block, 'ELSE');
if (Dart.STATEMENT_SUFFIX) {
if (block.getInput('ELSE') || dartGenerator.STATEMENT_SUFFIX) {
branchCode = dartGenerator.statementToCode(block, 'ELSE');
if (dartGenerator.STATEMENT_SUFFIX) {
branchCode =
Dart.prefixLines(
Dart.injectId(Dart.STATEMENT_SUFFIX, block), Dart.INDENT) +
dartGenerator.prefixLines(
dartGenerator.injectId(
dartGenerator.STATEMENT_SUFFIX, block), dartGenerator.INDENT) +
branchCode;
}
code += ' else {\n' + branchCode + '}';
@@ -50,29 +52,30 @@ Dart.forBlock['controls_if'] = function(block) {
return code + '\n';
};
Dart.forBlock['controls_ifelse'] = Dart.forBlock['controls_if'];
dartGenerator.forBlock['controls_ifelse'] =
dartGenerator.forBlock['controls_if'];
Dart.forBlock['logic_compare'] = function(block) {
dartGenerator.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 === '!=') ?
Dart.ORDER_EQUALITY :
Dart.ORDER_RELATIONAL;
const argument0 = Dart.valueToCode(block, 'A', order) || '0';
const argument1 = Dart.valueToCode(block, 'B', order) || '0';
Order.EQUALITY :
Order.RELATIONAL;
const argument0 = dartGenerator.valueToCode(block, 'A', order) || '0';
const argument1 = dartGenerator.valueToCode(block, 'B', order) || '0';
const code = argument0 + ' ' + operator + ' ' + argument1;
return [code, order];
};
Dart.forBlock['logic_operation'] = function(block) {
dartGenerator.forBlock['logic_operation'] = function(block) {
// Operations 'and', 'or'.
const operator = (block.getFieldValue('OP') === 'AND') ? '&&' : '||';
const order =
(operator === '&&') ? Dart.ORDER_LOGICAL_AND : Dart.ORDER_LOGICAL_OR;
let argument0 = Dart.valueToCode(block, 'A', order);
let argument1 = Dart.valueToCode(block, 'B', order);
(operator === '&&') ? Order.LOGICAL_AND : Order.LOGICAL_OR;
let argument0 = dartGenerator.valueToCode(block, 'A', order);
let argument1 = dartGenerator.valueToCode(block, 'B', order);
if (!argument0 && !argument1) {
// If there are no arguments, then the return value is false.
argument0 = 'false';
@@ -91,33 +94,33 @@ Dart.forBlock['logic_operation'] = function(block) {
return [code, order];
};
Dart.forBlock['logic_negate'] = function(block) {
dartGenerator.forBlock['logic_negate'] = function(block) {
// Negation.
const order = Dart.ORDER_UNARY_PREFIX;
const argument0 = Dart.valueToCode(block, 'BOOL', order) || 'true';
const order = Order.UNARY_PREFIX;
const argument0 = dartGenerator.valueToCode(block, 'BOOL', order) || 'true';
const code = '!' + argument0;
return [code, order];
};
Dart.forBlock['logic_boolean'] = function(block) {
dartGenerator.forBlock['logic_boolean'] = function(block) {
// Boolean values true and false.
const code = (block.getFieldValue('BOOL') === 'TRUE') ? 'true' : 'false';
return [code, Dart.ORDER_ATOMIC];
return [code, Order.ATOMIC];
};
Dart.forBlock['logic_null'] = function(block) {
dartGenerator.forBlock['logic_null'] = function(block) {
// Null data type.
return ['null', Dart.ORDER_ATOMIC];
return ['null', Order.ATOMIC];
};
Dart.forBlock['logic_ternary'] = function(block) {
dartGenerator.forBlock['logic_ternary'] = function(block) {
// Ternary operator.
const value_if =
Dart.valueToCode(block, 'IF', Dart.ORDER_CONDITIONAL) || 'false';
dartGenerator.valueToCode(block, 'IF', Order.CONDITIONAL) || 'false';
const value_then =
Dart.valueToCode(block, 'THEN', Dart.ORDER_CONDITIONAL) || 'null';
dartGenerator.valueToCode(block, 'THEN', Order.CONDITIONAL) || 'null';
const value_else =
Dart.valueToCode(block, 'ELSE', Dart.ORDER_CONDITIONAL) || 'null';
dartGenerator.valueToCode(block, 'ELSE', Order.CONDITIONAL) || 'null';
const code = value_if + ' ? ' + value_then + ' : ' + value_else;
return [code, Dart.ORDER_CONDITIONAL];
return [code, Order.CONDITIONAL];
};

83
generators/dart/loops.js
View File

@@ -11,12 +11,12 @@
import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.Dart.loops');
import {dartGenerator as Dart} from '../dart.js';
import {dartGenerator, Order} from '../dart.js';
import * as stringUtils from '../../core/utils/string.js';
import {NameType} from '../../core/names.js';
Dart.forBlock['controls_repeat_ext'] = function(block) {
dartGenerator.forBlock['controls_repeat_ext'] = function(block) {
let repeats;
// Repeat n times.
if (block.getField('TIMES')) {
@@ -24,15 +24,18 @@ Dart.forBlock['controls_repeat_ext'] = function(block) {
repeats = String(Number(block.getFieldValue('TIMES')));
} else {
// External number.
repeats = Dart.valueToCode(block, 'TIMES', Dart.ORDER_ASSIGNMENT) || '0';
repeats =
dartGenerator.valueToCode(block, 'TIMES', Order.ASSIGNMENT) || '0';
}
let branch = Dart.statementToCode(block, 'DO');
branch = Dart.addLoopTrap(branch, block);
let branch = dartGenerator.statementToCode(block, 'DO');
branch = dartGenerator.addLoopTrap(branch, block);
let code = '';
const loopVar = Dart.nameDB_.getDistinctName('count', NameType.VARIABLE);
const loopVar =
dartGenerator.nameDB_.getDistinctName('count', NameType.VARIABLE);
let endVar = repeats;
if (!repeats.match(/^\w+$/) && !stringUtils.isNumber(repeats)) {
endVar = Dart.nameDB_.getDistinctName('repeat_end', NameType.VARIABLE);
endVar =
dartGenerator.nameDB_.getDistinctName('repeat_end', NameType.VARIABLE);
code += 'var ' + endVar + ' = ' + repeats + ';\n';
}
code += 'for (int ' + loopVar + ' = 0; ' + loopVar + ' < ' + endVar + '; ' +
@@ -40,33 +43,37 @@ Dart.forBlock['controls_repeat_ext'] = function(block) {
return code;
};
Dart.forBlock['controls_repeat'] = Dart.forBlock['controls_repeat_ext'];
dartGenerator.forBlock['controls_repeat'] =
dartGenerator.forBlock['controls_repeat_ext'];
Dart.forBlock['controls_whileUntil'] = function(block) {
dartGenerator.forBlock['controls_whileUntil'] = function(block) {
// Do while/until loop.
const until = block.getFieldValue('MODE') === 'UNTIL';
let argument0 =
Dart.valueToCode(
block, 'BOOL', until ? Dart.ORDER_UNARY_PREFIX : Dart.ORDER_NONE) ||
dartGenerator.valueToCode(
block, 'BOOL', until ? Order.UNARY_PREFIX : Order.NONE) ||
'false';
let branch = Dart.statementToCode(block, 'DO');
branch = Dart.addLoopTrap(branch, block);
let branch = dartGenerator.statementToCode(block, 'DO');
branch = dartGenerator.addLoopTrap(branch, block);
if (until) {
argument0 = '!' + argument0;
}
return 'while (' + argument0 + ') {\n' + branch + '}\n';
};
Dart.forBlock['controls_for'] = function(block) {
dartGenerator.forBlock['controls_for'] = function(block) {
// For loop.
const variable0 =
Dart.nameDB_.getName(block.getFieldValue('VAR'), NameType.VARIABLE);
dartGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
const argument0 =
Dart.valueToCode(block, 'FROM', Dart.ORDER_ASSIGNMENT) || '0';
const argument1 = Dart.valueToCode(block, 'TO', Dart.ORDER_ASSIGNMENT) || '0';
const increment = Dart.valueToCode(block, 'BY', Dart.ORDER_ASSIGNMENT) || '1';
let branch = Dart.statementToCode(block, 'DO');
branch = Dart.addLoopTrap(branch, block);
dartGenerator.valueToCode(block, 'FROM', Order.ASSIGNMENT) || '0';
const argument1 =
dartGenerator.valueToCode(block, 'TO', Order.ASSIGNMENT) || '0';
const increment =
dartGenerator.valueToCode(block, 'BY', Order.ASSIGNMENT) || '1';
let branch = dartGenerator.statementToCode(block, 'DO');
branch = dartGenerator.addLoopTrap(branch, block);
let code;
if (stringUtils.isNumber(argument0) && stringUtils.isNumber(argument1) &&
stringUtils.isNumber(increment)) {
@@ -87,19 +94,22 @@ Dart.forBlock['controls_for'] = function(block) {
let startVar = argument0;
if (!argument0.match(/^\w+$/) && !stringUtils.isNumber(argument0)) {
startVar =
Dart.nameDB_.getDistinctName(variable0 + '_start', NameType.VARIABLE);
dartGenerator.nameDB_.getDistinctName(
variable0 + '_start', NameType.VARIABLE);
code += 'var ' + startVar + ' = ' + argument0 + ';\n';
}
let endVar = argument1;
if (!argument1.match(/^\w+$/) && !stringUtils.isNumber(argument1)) {
endVar =
Dart.nameDB_.getDistinctName(variable0 + '_end', NameType.VARIABLE);
dartGenerator.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 =
Dart.nameDB_.getDistinctName(variable0 + '_inc', NameType.VARIABLE);
dartGenerator.nameDB_.getDistinctName(
variable0 + '_inc', NameType.VARIABLE);
code += 'num ' + incVar + ' = ';
if (stringUtils.isNumber(increment)) {
code += Math.abs(increment) + ';\n';
@@ -107,7 +117,7 @@ Dart.forBlock['controls_for'] = function(block) {
code += '(' + increment + ').abs();\n';
}
code += 'if (' + startVar + ' > ' + endVar + ') {\n';
code += Dart.INDENT + incVar + ' = -' + incVar + ';\n';
code += dartGenerator.INDENT + incVar + ' = -' + incVar + ';\n';
code += '}\n';
code += 'for (' + variable0 + ' = ' + startVar + '; ' + incVar +
' >= 0 ? ' + variable0 + ' <= ' + endVar + ' : ' + variable0 +
@@ -117,38 +127,39 @@ Dart.forBlock['controls_for'] = function(block) {
return code;
};
Dart.forBlock['controls_forEach'] = function(block) {
dartGenerator.forBlock['controls_forEach'] = function(block) {
// For each loop.
const variable0 =
Dart.nameDB_.getName(block.getFieldValue('VAR'), NameType.VARIABLE);
dartGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
const argument0 =
Dart.valueToCode(block, 'LIST', Dart.ORDER_ASSIGNMENT) || '[]';
let branch = Dart.statementToCode(block, 'DO');
branch = Dart.addLoopTrap(branch, block);
dartGenerator.valueToCode(block, 'LIST', Order.ASSIGNMENT) || '[]';
let branch = dartGenerator.statementToCode(block, 'DO');
branch = dartGenerator.addLoopTrap(branch, block);
const code =
'for (var ' + variable0 + ' in ' + argument0 + ') {\n' + branch + '}\n';
return code;
};
Dart.forBlock['controls_flow_statements'] = function(block) {
dartGenerator.forBlock['controls_flow_statements'] = function(block) {
// Flow statements: continue, break.
let xfix = '';
if (Dart.STATEMENT_PREFIX) {
if (dartGenerator.STATEMENT_PREFIX) {
// Automatic prefix insertion is switched off for this block. Add manually.
xfix += Dart.injectId(Dart.STATEMENT_PREFIX, block);
xfix += dartGenerator.injectId(dartGenerator.STATEMENT_PREFIX, block);
}
if (Dart.STATEMENT_SUFFIX) {
if (dartGenerator.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 += Dart.injectId(Dart.STATEMENT_SUFFIX, block);
xfix += dartGenerator.injectId(dartGenerator.STATEMENT_SUFFIX, block);
}
if (Dart.STATEMENT_PREFIX) {
if (dartGenerator.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 += Dart.injectId(Dart.STATEMENT_PREFIX, loop);
xfix += dartGenerator.injectId(dartGenerator.STATEMENT_PREFIX, loop);
}
}
switch (block.getFieldValue('FLOW')) {

225
generators/dart/math.js
View File

@@ -12,76 +12,78 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.Dart.math');
import {NameType} from '../../core/names.js';
import {dartGenerator as Dart} from '../dart.js';
import {dartGenerator, Order} from '../dart.js';
Dart.addReservedWords('Math');
dartGenerator.addReservedWords('Math');
Dart.forBlock['math_number'] = function(block) {
dartGenerator.forBlock['math_number'] = function(block) {
// Numeric value.
let code = Number(block.getFieldValue('NUM'));
let order;
if (code === Infinity) {
code = 'double.infinity';
order = Dart.ORDER_UNARY_POSTFIX;
order = Order.UNARY_POSTFIX;
} else if (code === -Infinity) {
code = '-double.infinity';
order = Dart.ORDER_UNARY_PREFIX;
order = Order.UNARY_PREFIX;
} else {
// -4.abs() returns -4 in Dart due to strange order of operation choices.
// -4.abs() returns -4 in dartGenerator due to strange order of operation choices.
// -4 is actually an operator and a number. Reflect this in the order.
order = code < 0 ? Dart.ORDER_UNARY_PREFIX : Dart.ORDER_ATOMIC;
order = code < 0 ? Order.UNARY_PREFIX : Order.ATOMIC;
}
return [code, order];
};
Dart.forBlock['math_arithmetic'] = function(block) {
dartGenerator.forBlock['math_arithmetic'] = function(block) {
// Basic arithmetic operators, and power.
const OPERATORS = {
'ADD': [' + ', Dart.ORDER_ADDITIVE],
'MINUS': [' - ', Dart.ORDER_ADDITIVE],
'MULTIPLY': [' * ', Dart.ORDER_MULTIPLICATIVE],
'DIVIDE': [' / ', Dart.ORDER_MULTIPLICATIVE],
'POWER': [null, Dart.ORDER_NONE], // Handle power separately.
'ADD': [' + ', Order.ADDITIVE],
'MINUS': [' - ', Order.ADDITIVE],
'MULTIPLY': [' * ', Order.MULTIPLICATIVE],
'DIVIDE': [' / ', Order.MULTIPLICATIVE],
'POWER': [null, Order.NONE], // Handle power separately.
};
const tuple = OPERATORS[block.getFieldValue('OP')];
const operator = tuple[0];
const order = tuple[1];
const argument0 = Dart.valueToCode(block, 'A', order) || '0';
const argument1 = Dart.valueToCode(block, 'B', order) || '0';
const argument0 = dartGenerator.valueToCode(block, 'A', order) || '0';
const argument1 = dartGenerator.valueToCode(block, 'B', order) || '0';
let code;
// Power in Dart requires a special case since it has no operator.
// Power in dartGenerator requires a special case since it has no operator.
if (!operator) {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
code = 'Math.pow(' + argument0 + ', ' + argument1 + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
code = argument0 + operator + argument1;
return [code, order];
};
Dart.forBlock['math_single'] = function(block) {
dartGenerator.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 = Dart.valueToCode(block, 'NUM', Dart.ORDER_UNARY_PREFIX) || '0';
arg = dartGenerator.valueToCode(block, 'NUM', Order.UNARY_PREFIX) || '0';
if (arg[0] === '-') {
// --3 is not legal in Dart.
// --3 is not legal in dartGenerator.
arg = ' ' + arg;
}
code = '-' + arg;
return [code, Dart.ORDER_UNARY_PREFIX];
return [code, Order.UNARY_PREFIX];
}
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
if (operator === 'ABS' || operator.substring(0, 5) === 'ROUND') {
arg = Dart.valueToCode(block, 'NUM', Dart.ORDER_UNARY_POSTFIX) || '0';
arg = dartGenerator.valueToCode(block, 'NUM', Order.UNARY_POSTFIX) || '0';
} else if (operator === 'SIN' || operator === 'COS' || operator === 'TAN') {
arg = Dart.valueToCode(block, 'NUM', Dart.ORDER_MULTIPLICATIVE) || '0';
arg = dartGenerator.valueToCode(block, 'NUM', Order.MULTIPLICATIVE) || '0';
} else {
arg = Dart.valueToCode(block, 'NUM', Dart.ORDER_NONE) || '0';
arg = dartGenerator.valueToCode(block, 'NUM', Order.NONE) || '0';
}
// First, handle cases which generate values that don't need parentheses
// wrapping the code.
@@ -121,7 +123,7 @@ Dart.forBlock['math_single'] = function(block) {
break;
}
if (code) {
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
// Second, handle cases which generate values that may need parentheses
// wrapping the code.
@@ -141,49 +143,50 @@ Dart.forBlock['math_single'] = function(block) {
default:
throw Error('Unknown math operator: ' + operator);
}
return [code, Dart.ORDER_MULTIPLICATIVE];
return [code, Order.MULTIPLICATIVE];
};
Dart.forBlock['math_constant'] = function(block) {
dartGenerator.forBlock['math_constant'] = function(block) {
// Constants: PI, E, the Golden Ratio, sqrt(2), 1/sqrt(2), INFINITY.
const CONSTANTS = {
'PI': ['Math.pi', Dart.ORDER_UNARY_POSTFIX],
'E': ['Math.e', Dart.ORDER_UNARY_POSTFIX],
'GOLDEN_RATIO': ['(1 + Math.sqrt(5)) / 2', Dart.ORDER_MULTIPLICATIVE],
'SQRT2': ['Math.sqrt2', Dart.ORDER_UNARY_POSTFIX],
'SQRT1_2': ['Math.sqrt1_2', Dart.ORDER_UNARY_POSTFIX],
'INFINITY': ['double.infinity', Dart.ORDER_ATOMIC],
'PI': ['Math.pi', Order.UNARY_POSTFIX],
'E': ['Math.e', Order.UNARY_POSTFIX],
'GOLDEN_RATIO': ['(1 + Math.sqrt(5)) / 2', Order.MULTIPLICATIVE],
'SQRT2': ['Math.sqrt2', Order.UNARY_POSTFIX],
'SQRT1_2': ['Math.sqrt1_2', Order.UNARY_POSTFIX],
'INFINITY': ['double.infinity', Order.ATOMIC],
};
const constant = block.getFieldValue('CONSTANT');
if (constant !== 'INFINITY') {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
}
return CONSTANTS[constant];
};
Dart.forBlock['math_number_property'] = function(block) {
dartGenerator.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', Dart.ORDER_MULTIPLICATIVE, Dart.ORDER_EQUALITY],
'ODD': [' % 2 == 1', Dart.ORDER_MULTIPLICATIVE, Dart.ORDER_EQUALITY],
'WHOLE': [' % 1 == 0', Dart.ORDER_MULTIPLICATIVE, Dart.ORDER_EQUALITY],
'POSITIVE': [' > 0', Dart.ORDER_RELATIONAL, Dart.ORDER_RELATIONAL],
'NEGATIVE': [' < 0', Dart.ORDER_RELATIONAL, Dart.ORDER_RELATIONAL],
'DIVISIBLE_BY': [null, Dart.ORDER_MULTIPLICATIVE, Dart.ORDER_EQUALITY],
'PRIME': [null, Dart.ORDER_NONE, Dart.ORDER_UNARY_POSTFIX],
'EVEN': [' % 2 == 0', Order.MULTIPLICATIVE, Order.EQUALITY],
'ODD': [' % 2 == 1', Order.MULTIPLICATIVE, Order.EQUALITY],
'WHOLE': [' % 1 == 0', Order.MULTIPLICATIVE, Order.EQUALITY],
'POSITIVE': [' > 0', Order.RELATIONAL, Order.RELATIONAL],
'NEGATIVE': [' < 0', Order.RELATIONAL, Order.RELATIONAL],
'DIVISIBLE_BY': [null, Order.MULTIPLICATIVE, Order.EQUALITY],
'PRIME': [null, Order.NONE, Order.UNARY_POSTFIX],
};
const dropdownProperty = block.getFieldValue('PROPERTY');
const [suffix, inputOrder, outputOrder] = PROPERTIES[dropdownProperty];
const numberToCheck = Dart.valueToCode(block, 'NUMBER_TO_CHECK',
const numberToCheck = dartGenerator.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.
Dart.definitions_['import_dart_math'] =
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
const functionName = Dart.provideFunction_('math_isPrime', `
bool ${Dart.FUNCTION_NAME_PLACEHOLDER_}(n) {
const functionName = dartGenerator.provideFunction_('math_isPrime', `
bool ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(n) {
// https://en.wikipedia.org/wiki/Primality_test#Naive_methods
if (n == 2 || n == 3) {
return true;
@@ -204,10 +207,10 @@ bool ${Dart.FUNCTION_NAME_PLACEHOLDER_}(n) {
`);
code = functionName + '(' + numberToCheck + ')';
} else if (dropdownProperty === 'DIVISIBLE_BY') {
const divisor = Dart.valueToCode(block, 'DIVISOR',
Dart.ORDER_MULTIPLICATIVE) || '0';
const divisor = dartGenerator.valueToCode(block, 'DIVISOR',
Order.MULTIPLICATIVE) || '0';
if (divisor === '0') {
return ['false', Dart.ORDER_ATOMIC];
return ['false', Order.ATOMIC];
}
code = numberToCheck + ' % ' + divisor + ' == 0';
} else {
@@ -216,30 +219,31 @@ bool ${Dart.FUNCTION_NAME_PLACEHOLDER_}(n) {
return [code, outputOrder];
};
Dart.forBlock['math_change'] = function(block) {
dartGenerator.forBlock['math_change'] = function(block) {
// Add to a variable in place.
const argument0 =
Dart.valueToCode(block, 'DELTA', Dart.ORDER_ADDITIVE) || '0';
dartGenerator.valueToCode(block, 'DELTA', Order.ADDITIVE) || '0';
const varName =
Dart.nameDB_.getName(block.getFieldValue('VAR'), NameType.VARIABLE);
dartGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
return varName + ' = (' + varName + ' is num ? ' + varName + ' : 0) + ' +
argument0 + ';\n';
};
// Rounding functions have a single operand.
Dart.forBlock['math_round'] = Dart.forBlock['math_single'];
dartGenerator.forBlock['math_round'] = dartGenerator.forBlock['math_single'];
// Trigonometry functions have a single operand.
Dart.forBlock['math_trig'] = Dart.forBlock['math_single'];
dartGenerator.forBlock['math_trig'] = dartGenerator.forBlock['math_single'];
Dart.forBlock['math_on_list'] = function(block) {
dartGenerator.forBlock['math_on_list'] = function(block) {
// Math functions for lists.
const func = block.getFieldValue('OP');
const list = Dart.valueToCode(block, 'LIST', Dart.ORDER_NONE) || '[]';
const list = dartGenerator.valueToCode(block, 'LIST', Order.NONE) || '[]';
let code;
switch (func) {
case 'SUM': {
const functionName = Dart.provideFunction_('math_sum', `
num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List<num> myList) {
const functionName = dartGenerator.provideFunction_('math_sum', `
num ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List<num> myList) {
num sumVal = 0;
myList.forEach((num entry) {sumVal += entry;});
return sumVal;
@@ -249,9 +253,10 @@ num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List<num> myList) {
break;
}
case 'MIN': {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
const functionName = Dart.provideFunction_('math_min', `
num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List<num> myList) {
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
const functionName = dartGenerator.provideFunction_('math_min', `
num ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List<num> myList) {
if (myList.isEmpty) return null;
num minVal = myList[0];
myList.forEach((num entry) {minVal = Math.min(minVal, entry);});
@@ -262,9 +267,10 @@ num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List<num> myList) {
break;
}
case 'MAX': {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
const functionName = Dart.provideFunction_('math_max', `
num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List<num> myList) {
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
const functionName = dartGenerator.provideFunction_('math_max', `
num ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List<num> myList) {
if (myList.isEmpty) return null;
num maxVal = myList[0];
myList.forEach((num entry) {maxVal = Math.max(maxVal, entry);});
@@ -277,8 +283,8 @@ num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List<num> myList) {
case 'AVERAGE': {
// This operation exclude null and values that are not int or float:
// math_mean([null,null,"aString",1,9]) -> 5.0
const functionName = Dart.provideFunction_('math_mean', `
num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
const functionName = dartGenerator.provideFunction_('math_mean', `
num ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
// First filter list for numbers only.
List localList = new List.from(myList);
localList.removeWhere((a) => a is! num);
@@ -292,8 +298,8 @@ num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
break;
}
case 'MEDIAN': {
const functionName = Dart.provideFunction_('math_median', `
num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
const functionName = dartGenerator.provideFunction_('math_median', `
num ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
// First filter list for numbers only, then sort, then return middle value
// or the average of two middle values if list has an even number of elements.
List localList = new List.from(myList);
@@ -312,12 +318,13 @@ num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
break;
}
case 'MODE': {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
// 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 = Dart.provideFunction_('math_modes', `
List ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List values) {
const functionName = dartGenerator.provideFunction_('math_modes', `
List ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List values) {
List modes = [];
List counts = [];
int maxCount = 0;
@@ -350,9 +357,11 @@ List ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List values) {
break;
}
case 'STD_DEV': {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
const functionName = Dart.provideFunction_('math_standard_deviation', `
num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
const functionName =
dartGenerator.provideFunction_('math_standard_deviation', `
num ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
// First filter list for numbers only.
List numbers = new List.from(myList);
numbers.removeWhere((a) => a is! num);
@@ -370,9 +379,10 @@ num ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
break;
}
case 'RANDOM': {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
const functionName = Dart.provideFunction_('math_random_item', `
dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
const functionName = dartGenerator.provideFunction_('math_random_item', `
dynamic ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
int x = new Math.Random().nextInt(myList.length);
return myList[x];
}
@@ -383,38 +393,41 @@ dynamic ${Dart.FUNCTION_NAME_PLACEHOLDER_}(List myList) {
default:
throw Error('Unknown operator: ' + func);
}
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['math_modulo'] = function(block) {
dartGenerator.forBlock['math_modulo'] = function(block) {
// Remainder computation.
const argument0 =
Dart.valueToCode(block, 'DIVIDEND', Dart.ORDER_MULTIPLICATIVE) || '0';
dartGenerator.valueToCode(block, 'DIVIDEND', Order.MULTIPLICATIVE) || '0';
const argument1 =
Dart.valueToCode(block, 'DIVISOR', Dart.ORDER_MULTIPLICATIVE) || '0';
dartGenerator.valueToCode(block, 'DIVISOR', Order.MULTIPLICATIVE) || '0';
const code = argument0 + ' % ' + argument1;
return [code, Dart.ORDER_MULTIPLICATIVE];
return [code, Order.MULTIPLICATIVE];
};
Dart.forBlock['math_constrain'] = function(block) {
dartGenerator.forBlock['math_constrain'] = function(block) {
// Constrain a number between two limits.
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
const argument0 = Dart.valueToCode(block, 'VALUE', Dart.ORDER_NONE) || '0';
const argument1 = Dart.valueToCode(block, 'LOW', Dart.ORDER_NONE) || '0';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
const argument0 =
dartGenerator.valueToCode(block, 'VALUE', Order.NONE) || '0';
const argument1 = dartGenerator.valueToCode(block, 'LOW', Order.NONE) || '0';
const argument2 =
Dart.valueToCode(block, 'HIGH', Dart.ORDER_NONE) || 'double.infinity';
dartGenerator.valueToCode(block, 'HIGH', Order.NONE) || 'double.infinity';
const code = 'Math.min(Math.max(' + argument0 + ', ' + argument1 + '), ' +
argument2 + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['math_random_int'] = function(block) {
dartGenerator.forBlock['math_random_int'] = function(block) {
// Random integer between [X] and [Y].
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
const argument0 = Dart.valueToCode(block, 'FROM', Dart.ORDER_NONE) || '0';
const argument1 = Dart.valueToCode(block, 'TO', Dart.ORDER_NONE) || '0';
const functionName = Dart.provideFunction_('math_random_int', `
int ${Dart.FUNCTION_NAME_PLACEHOLDER_}(num a, num b) {
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
const argument0 = dartGenerator.valueToCode(block, 'FROM', Order.NONE) || '0';
const argument1 = dartGenerator.valueToCode(block, 'TO', Order.NONE) || '0';
const functionName = dartGenerator.provideFunction_('math_random_int', `
int ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(num a, num b) {
if (a > b) {
// Swap a and b to ensure a is smaller.
num c = a;
@@ -425,22 +438,24 @@ int ${Dart.FUNCTION_NAME_PLACEHOLDER_}(num a, num b) {
}
`);
const code = functionName + '(' + argument0 + ', ' + argument1 + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['math_random_float'] = function(block) {
dartGenerator.forBlock['math_random_float'] = function(block) {
// Random fraction between 0 and 1.
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
return ['new Math.Random().nextDouble()', Dart.ORDER_UNARY_POSTFIX];
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
return ['new Math.Random().nextDouble()', Order.UNARY_POSTFIX];
};
Dart.forBlock['math_atan2'] = function(block) {
dartGenerator.forBlock['math_atan2'] = function(block) {
// Arctangent of point (X, Y) in degrees from -180 to 180.
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
const argument0 = Dart.valueToCode(block, 'X', Dart.ORDER_NONE) || '0';
const argument1 = Dart.valueToCode(block, 'Y', Dart.ORDER_NONE) || '0';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
const argument0 = dartGenerator.valueToCode(block, 'X', Order.NONE) || '0';
const argument1 = dartGenerator.valueToCode(block, 'Y', Order.NONE) || '0';
return [
'Math.atan2(' + argument1 + ', ' + argument0 + ') / Math.pi * 180',
Dart.ORDER_MULTIPLICATIVE
Order.MULTIPLICATIVE
];
};

70
generators/dart/procedures.js
View File

@@ -12,93 +12,99 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.Dart.procedures');
import {NameType} from '../../core/names.js';
import {dartGenerator as Dart} from '../dart.js';
import {dartGenerator, Order} from '../dart.js';
Dart.forBlock['procedures_defreturn'] = function(block) {
dartGenerator.forBlock['procedures_defreturn'] = function(block) {
// Define a procedure with a return value.
const funcName =
Dart.nameDB_.getName(block.getFieldValue('NAME'), NameType.PROCEDURE);
dartGenerator.nameDB_.getName(
block.getFieldValue('NAME'), NameType.PROCEDURE);
let xfix1 = '';
if (Dart.STATEMENT_PREFIX) {
xfix1 += Dart.injectId(Dart.STATEMENT_PREFIX, block);
if (dartGenerator.STATEMENT_PREFIX) {
xfix1 += dartGenerator.injectId(dartGenerator.STATEMENT_PREFIX, block);
}
if (Dart.STATEMENT_SUFFIX) {
xfix1 += Dart.injectId(Dart.STATEMENT_SUFFIX, block);
if (dartGenerator.STATEMENT_SUFFIX) {
xfix1 += dartGenerator.injectId(dartGenerator.STATEMENT_SUFFIX, block);
}
if (xfix1) {
xfix1 = Dart.prefixLines(xfix1, Dart.INDENT);
xfix1 = dartGenerator.prefixLines(xfix1, dartGenerator.INDENT);
}
let loopTrap = '';
if (Dart.INFINITE_LOOP_TRAP) {
loopTrap = Dart.prefixLines(
Dart.injectId(Dart.INFINITE_LOOP_TRAP, block), Dart.INDENT);
if (dartGenerator.INFINITE_LOOP_TRAP) {
loopTrap = dartGenerator.prefixLines(
dartGenerator.injectId(dartGenerator.INFINITE_LOOP_TRAP, block),
dartGenerator.INDENT);
}
const branch = Dart.statementToCode(block, 'STACK');
let returnValue = Dart.valueToCode(block, 'RETURN', Dart.ORDER_NONE) || '';
const branch = dartGenerator.statementToCode(block, 'STACK');
let returnValue =
dartGenerator.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 = Dart.INDENT + 'return ' + returnValue + ';\n';
returnValue = dartGenerator.INDENT + 'return ' + returnValue + ';\n';
}
const returnType = returnValue ? 'dynamic' : 'void';
const args = [];
const variables = block.getVars();
for (let i = 0; i < variables.length; i++) {
args[i] = Dart.nameDB_.getName(variables[i], NameType.VARIABLE);
args[i] = dartGenerator.nameDB_.getName(variables[i], NameType.VARIABLE);
}
let code = returnType + ' ' + funcName + '(' + args.join(', ') + ') {\n' +
xfix1 + loopTrap + branch + xfix2 + returnValue + '}';
code = Dart.scrub_(block, code);
code = dartGenerator.scrub_(block, code);
// Add % so as not to collide with helper functions in definitions list.
Dart.definitions_['%' + funcName] = code;
dartGenerator.definitions_['%' + funcName] = code;
return null;
};
// Defining a procedure without a return value uses the same generator as
// a procedure with a return value.
Dart.forBlock['procedures_defnoreturn'] = Dart.forBlock['procedures_defreturn'];
dartGenerator.forBlock['procedures_defnoreturn'] = dartGenerator.forBlock['procedures_defreturn'];
Dart.forBlock['procedures_callreturn'] = function(block) {
dartGenerator.forBlock['procedures_callreturn'] = function(block) {
// Call a procedure with a return value.
const funcName =
Dart.nameDB_.getName(block.getFieldValue('NAME'), NameType.PROCEDURE);
dartGenerator.nameDB_.getName(
block.getFieldValue('NAME'),NameType.PROCEDURE);
const args = [];
const variables = block.getVars();
for (let i = 0; i < variables.length; i++) {
args[i] = Dart.valueToCode(block, 'ARG' + i, Dart.ORDER_NONE) || 'null';
args[i] = dartGenerator.valueToCode(block, 'ARG' + i, Order.NONE) || 'null';
}
let code = funcName + '(' + args.join(', ') + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['procedures_callnoreturn'] = function(block) {
dartGenerator.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 = Dart.forBlock['procedures_callreturn'](block);
const tuple = dartGenerator.forBlock['procedures_callreturn'](block);
return tuple[0] + ';\n';
};
Dart.forBlock['procedures_ifreturn'] = function(block) {
dartGenerator.forBlock['procedures_ifreturn'] = function(block) {
// Conditionally return value from a procedure.
const condition =
Dart.valueToCode(block, 'CONDITION', Dart.ORDER_NONE) || 'false';
dartGenerator.valueToCode(block, 'CONDITION', Order.NONE) || 'false';
let code = 'if (' + condition + ') {\n';
if (Dart.STATEMENT_SUFFIX) {
if (dartGenerator.STATEMENT_SUFFIX) {
// Inject any statement suffix here since the regular one at the end
// will not get executed if the return is triggered.
code += Dart.prefixLines(
Dart.injectId(Dart.STATEMENT_SUFFIX, block), Dart.INDENT);
code += dartGenerator.prefixLines(
dartGenerator.injectId(
dartGenerator.STATEMENT_SUFFIX, block), dartGenerator.INDENT);
}
if (block.hasReturnValue_) {
const value = Dart.valueToCode(block, 'VALUE', Dart.ORDER_NONE) || 'null';
code += Dart.INDENT + 'return ' + value + ';\n';
const value =
dartGenerator.valueToCode(block, 'VALUE', Order.NONE) || 'null';
code += dartGenerator.INDENT + 'return ' + value + ';\n';
} else {
code += Dart.INDENT + 'return;\n';
code += dartGenerator.INDENT + 'return;\n';
}
code += '}\n';
return code;

192
generators/dart/text.js
View File

@@ -12,153 +12,157 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.Dart.texts');
import {NameType} from '../../core/names.js';
import {dartGenerator as Dart} from '../dart.js';
import {dartGenerator, Order} from '../dart.js';
Dart.addReservedWords('Html,Math');
dartGenerator.addReservedWords('Html,Math');
Dart.forBlock['text'] = function(block) {
dartGenerator.forBlock['text'] = function(block) {
// Text value.
const code = Dart.quote_(block.getFieldValue('TEXT'));
return [code, Dart.ORDER_ATOMIC];
const code = dartGenerator.quote_(block.getFieldValue('TEXT'));
return [code, Order.ATOMIC];
};
Dart.forBlock['text_multiline'] = function(block) {
dartGenerator.forBlock['text_multiline'] = function(block) {
// Text value.
const code = Dart.multiline_quote_(block.getFieldValue('TEXT'));
const code = dartGenerator.multiline_quote_(block.getFieldValue('TEXT'));
const order =
code.indexOf('+') !== -1 ? Dart.ORDER_ADDITIVE : Dart.ORDER_ATOMIC;
code.indexOf('+') !== -1 ? Order.ADDITIVE : Order.ATOMIC;
return [code, order];
};
Dart.forBlock['text_join'] = function(block) {
dartGenerator.forBlock['text_join'] = function(block) {
// Create a string made up of any number of elements of any type.
switch (block.itemCount_) {
case 0:
return ["''", Dart.ORDER_ATOMIC];
return ["''", Order.ATOMIC];
case 1: {
const element =
Dart.valueToCode(block, 'ADD0', Dart.ORDER_UNARY_POSTFIX) || "''";
dartGenerator.valueToCode(block, 'ADD0', Order.UNARY_POSTFIX) || "''";
const code = element + '.toString()';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
default: {
const elements = new Array(block.itemCount_);
for (let i = 0; i < block.itemCount_; i++) {
elements[i] =
Dart.valueToCode(block, 'ADD' + i, Dart.ORDER_NONE) || "''";
dartGenerator.valueToCode(block, 'ADD' + i, Order.NONE) || "''";
}
const code = '[' + elements.join(',') + '].join()';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
}
};
Dart.forBlock['text_append'] = function(block) {
dartGenerator.forBlock['text_append'] = function(block) {
// Append to a variable in place.
const varName =
Dart.nameDB_.getName(block.getFieldValue('VAR'), NameType.VARIABLE);
const value = Dart.valueToCode(block, 'TEXT', Dart.ORDER_NONE) || "''";
dartGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
const value = dartGenerator.valueToCode(block, 'TEXT', Order.NONE) || "''";
return varName + ' = [' + varName + ', ' + value + '].join();\n';
};
Dart.forBlock['text_length'] = function(block) {
dartGenerator.forBlock['text_length'] = function(block) {
// String or array length.
const text =
Dart.valueToCode(block, 'VALUE', Dart.ORDER_UNARY_POSTFIX) || "''";
return [text + '.length', Dart.ORDER_UNARY_POSTFIX];
dartGenerator.valueToCode(block, 'VALUE', Order.UNARY_POSTFIX) || "''";
return [text + '.length', Order.UNARY_POSTFIX];
};
Dart.forBlock['text_isEmpty'] = function(block) {
dartGenerator.forBlock['text_isEmpty'] = function(block) {
// Is the string null or array empty?
const text =
Dart.valueToCode(block, 'VALUE', Dart.ORDER_UNARY_POSTFIX) || "''";
return [text + '.isEmpty', Dart.ORDER_UNARY_POSTFIX];
dartGenerator.valueToCode(block, 'VALUE', Order.UNARY_POSTFIX) || "''";
return [text + '.isEmpty', Order.UNARY_POSTFIX];
};
Dart.forBlock['text_indexOf'] = function(block) {
dartGenerator.forBlock['text_indexOf'] = function(block) {
// Search the text for a substring.
const operator =
block.getFieldValue('END') === 'FIRST' ? 'indexOf' : 'lastIndexOf';
const substring = Dart.valueToCode(block, 'FIND', Dart.ORDER_NONE) || "''";
const substring =
dartGenerator.valueToCode(block, 'FIND', Order.NONE) || "''";
const text =
Dart.valueToCode(block, 'VALUE', Dart.ORDER_UNARY_POSTFIX) || "''";
dartGenerator.valueToCode(block, 'VALUE', Order.UNARY_POSTFIX) || "''";
const code = text + '.' + operator + '(' + substring + ')';
if (block.workspace.options.oneBasedIndex) {
return [code + ' + 1', Dart.ORDER_ADDITIVE];
return [code + ' + 1', Order.ADDITIVE];
}
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['text_charAt'] = function(block) {
dartGenerator.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 === 'FIRST' || where === 'FROM_START') ?
Dart.ORDER_UNARY_POSTFIX :
Dart.ORDER_NONE;
const text = Dart.valueToCode(block, 'VALUE', textOrder) || "''";
Order.UNARY_POSTFIX :
Order.NONE;
const text = dartGenerator.valueToCode(block, 'VALUE', textOrder) || "''";
let at;
switch (where) {
case 'FIRST': {
const code = text + '[0]';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
case 'FROM_START': {
at = Dart.getAdjusted(block, 'AT');
at = dartGenerator.getAdjusted(block, 'AT');
const code = text + '[' + at + ']';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
case 'LAST':
at = 1;
// Fall through.
case 'FROM_END': {
at = Dart.getAdjusted(block, 'AT', 1);
const functionName = Dart.provideFunction_('text_get_from_end', `
String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String text, num x) {
at = dartGenerator.getAdjusted(block, 'AT', 1);
const functionName = dartGenerator.provideFunction_('text_get_from_end', `
String ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(String text, num x) {
return text[text.length - x];
}
`);
const code = functionName + '(' + text + ', ' + at + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
case 'RANDOM': {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
const functionName = Dart.provideFunction_('text_random_letter', `
String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String text) {
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
const functionName =
dartGenerator.provideFunction_('text_random_letter', `
String ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(String text) {
int x = new Math.Random().nextInt(text.length);
return text[x];
}
`);
const code = functionName + '(' + text + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
}
}
throw Error('Unhandled option (text_charAt).');
};
Dart.forBlock['text_getSubstring'] = function(block) {
dartGenerator.forBlock['text_getSubstring'] = function(block) {
// Get substring.
const where1 = block.getFieldValue('WHERE1');
const where2 = block.getFieldValue('WHERE2');
const requiresLengthCall = (where1 !== 'FROM_END' && where2 === 'FROM_START');
const textOrder =
requiresLengthCall ? Dart.ORDER_UNARY_POSTFIX : Dart.ORDER_NONE;
const text = Dart.valueToCode(block, 'STRING', textOrder) || "''";
requiresLengthCall ? Order.UNARY_POSTFIX : Order.NONE;
const text = dartGenerator.valueToCode(block, 'STRING', textOrder) || "''";
let code;
if (where1 === 'FIRST' && where2 === 'LAST') {
code = text;
return [code, Dart.ORDER_NONE];
return [code, Order.NONE];
} else if (text.match(/^'?\w+'?$/) || 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 = Dart.getAdjusted(block, 'AT1');
at1 = dartGenerator.getAdjusted(block, 'AT1');
break;
case 'FROM_END':
at1 = Dart.getAdjusted(block, 'AT1', 1, false, Dart.ORDER_ADDITIVE);
at1 = dartGenerator.getAdjusted(block, 'AT1', 1, false, Order.ADDITIVE);
at1 = text + '.length - ' + at1;
break;
case 'FIRST':
@@ -170,10 +174,10 @@ Dart.forBlock['text_getSubstring'] = function(block) {
let at2;
switch (where2) {
case 'FROM_START':
at2 = Dart.getAdjusted(block, 'AT2', 1);
at2 = dartGenerator.getAdjusted(block, 'AT2', 1);
break;
case 'FROM_END':
at2 = Dart.getAdjusted(block, 'AT2', 0, false, Dart.ORDER_ADDITIVE);
at2 = dartGenerator.getAdjusted(block, 'AT2', 0, false, Order.ADDITIVE);
at2 = text + '.length - ' + at2;
break;
case 'LAST':
@@ -188,10 +192,11 @@ Dart.forBlock['text_getSubstring'] = function(block) {
code = text + '.substring(' + at1 + ', ' + at2 + ')';
}
} else {
const at1 = Dart.getAdjusted(block, 'AT1');
const at2 = Dart.getAdjusted(block, 'AT2');
const functionName = Dart.provideFunction_('text_get_substring', `
String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String text, String where1, num at1, String where2, num at2) {
const at1 = dartGenerator.getAdjusted(block, 'AT1');
const at2 = dartGenerator.getAdjusted(block, 'AT2');
const functionName =
dartGenerator.provideFunction_('text_get_substring', `
String ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(String text, String where1, num at1, String where2, num at2) {
int getAt(String where, num at) {
if (where == 'FROM_END') {
at = text.length - 1 - at;
@@ -212,10 +217,10 @@ String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String text, String where1, num at1, S
code = functionName + '(' + text + ', \'' + where1 + '\', ' + at1 + ', \'' +
where2 + '\', ' + at2 + ')';
}
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['text_changeCase'] = function(block) {
dartGenerator.forBlock['text_changeCase'] = function(block) {
// Change capitalization.
const OPERATORS = {
'UPPERCASE': '.toUpperCase()',
@@ -223,16 +228,16 @@ Dart.forBlock['text_changeCase'] = function(block) {
'TITLECASE': null
};
const operator = OPERATORS[block.getFieldValue('CASE')];
const textOrder = operator ? Dart.ORDER_UNARY_POSTFIX : Dart.ORDER_NONE;
const text = Dart.valueToCode(block, 'TEXT', textOrder) || "''";
const textOrder = operator ? Order.UNARY_POSTFIX : Order.NONE;
const text = dartGenerator.valueToCode(block, 'TEXT', textOrder) || "''";
let code;
if (operator) {
// Upper and lower case are functions built into Dart.
// Upper and lower case are functions built into dartGenerator.
code = text + operator;
} else {
// Title case is not a native Dart function. Define one.
const functionName = Dart.provideFunction_('text_toTitleCase', `
String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String str) {
// Title case is not a native dartGenerator function. Define one.
const functionName = dartGenerator.provideFunction_('text_toTitleCase', `
String ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(String str) {
RegExp exp = new RegExp(r'\\b');
List<String> list = str.split(exp);
final title = new StringBuffer();
@@ -249,10 +254,10 @@ String ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String str) {
`);
code = functionName + '(' + text + ')';
}
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['text_trim'] = function(block) {
dartGenerator.forBlock['text_trim'] = function(block) {
// Trim spaces.
const OPERATORS = {
'LEFT': '.replaceFirst(new RegExp(r\'^\\s+\'), \'\')',
@@ -261,44 +266,47 @@ Dart.forBlock['text_trim'] = function(block) {
};
const operator = OPERATORS[block.getFieldValue('MODE')];
const text =
Dart.valueToCode(block, 'TEXT', Dart.ORDER_UNARY_POSTFIX) || "''";
return [text + operator, Dart.ORDER_UNARY_POSTFIX];
dartGenerator.valueToCode(block, 'TEXT', Order.UNARY_POSTFIX) || "''";
return [text + operator, Order.UNARY_POSTFIX];
};
Dart.forBlock['text_print'] = function(block) {
dartGenerator.forBlock['text_print'] = function(block) {
// Print statement.
const msg = Dart.valueToCode(block, 'TEXT', Dart.ORDER_NONE) || "''";
const msg = dartGenerator.valueToCode(block, 'TEXT', Order.NONE) || "''";
return 'print(' + msg + ');\n';
};
Dart.forBlock['text_prompt_ext'] = function(block) {
dartGenerator.forBlock['text_prompt_ext'] = function(block) {
// Prompt function.
Dart.definitions_['import_dart_html'] = 'import \'dart:html\' as Html;';
dartGenerator.definitions_['import_dart_html'] =
'import \'dart:html\' as Html;';
let msg;
if (block.getField('TEXT')) {
// Internal message.
msg = Dart.quote_(block.getFieldValue('TEXT'));
msg = dartGenerator.quote_(block.getFieldValue('TEXT'));
} else {
// External message.
msg = Dart.valueToCode(block, 'TEXT', Dart.ORDER_NONE) || "''";
msg = dartGenerator.valueToCode(block, 'TEXT', Order.NONE) || "''";
}
let code = 'Html.window.prompt(' + msg + ', \'\')';
const toNumber = block.getFieldValue('TYPE') === 'NUMBER';
if (toNumber) {
Dart.definitions_['import_dart_math'] = 'import \'dart:math\' as Math;';
dartGenerator.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
code = 'Math.parseDouble(' + code + ')';
}
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['text_prompt'] = Dart.forBlock['text_prompt_ext'];
dartGenerator.forBlock['text_prompt'] =
dartGenerator.forBlock['text_prompt_ext'];
Dart.forBlock['text_count'] = function(block) {
const text = Dart.valueToCode(block, 'TEXT', Dart.ORDER_NONE) || "''";
const sub = Dart.valueToCode(block, 'SUB', Dart.ORDER_NONE) || "''";
// Substring count is not a native Dart function. Define one.
const functionName = Dart.provideFunction_('text_count', `
int ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String haystack, String needle) {
dartGenerator.forBlock['text_count'] = function(block) {
const text = dartGenerator.valueToCode(block, 'TEXT', Order.NONE) || "''";
const sub = dartGenerator.valueToCode(block, 'SUB', Order.NONE) || "''";
// Substring count is not a native dartGenerator function. Define one.
const functionName = dartGenerator.provideFunction_('text_count', `
int ${dartGenerator.FUNCTION_NAME_PLACEHOLDER_}(String haystack, String needle) {
if (needle.length == 0) {
return haystack.length + 1;
}
@@ -315,24 +323,24 @@ int ${Dart.FUNCTION_NAME_PLACEHOLDER_}(String haystack, String needle) {
}
`);
const code = functionName + '(' + text + ', ' + sub + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['text_replace'] = function(block) {
dartGenerator.forBlock['text_replace'] = function(block) {
const text =
Dart.valueToCode(block, 'TEXT', Dart.ORDER_UNARY_POSTFIX) || "''";
const from = Dart.valueToCode(block, 'FROM', Dart.ORDER_NONE) || "''";
const to = Dart.valueToCode(block, 'TO', Dart.ORDER_NONE) || "''";
dartGenerator.valueToCode(block, 'TEXT', Order.UNARY_POSTFIX) || "''";
const from = dartGenerator.valueToCode(block, 'FROM', Order.NONE) || "''";
const to = dartGenerator.valueToCode(block, 'TO', Order.NONE) || "''";
const code = text + '.replaceAll(' + from + ', ' + to + ')';
return [code, Dart.ORDER_UNARY_POSTFIX];
return [code, Order.UNARY_POSTFIX];
};
Dart.forBlock['text_reverse'] = function(block) {
// There isn't a sensible way to do this in Dart. See:
dartGenerator.forBlock['text_reverse'] = function(block) {
// There isn't a sensible way to do this in dartGenerator. See:
// http://stackoverflow.com/a/21613700/3529104
// Implementing something is possibly better than not implementing anything?
const text =
Dart.valueToCode(block, 'TEXT', Dart.ORDER_UNARY_POSTFIX) || "''";
dartGenerator.valueToCode(block, 'TEXT', Order.UNARY_POSTFIX) || "''";
const code = 'new String.fromCharCodes(' + text + '.runes.toList().reversed)';
return [code, Dart.ORDER_UNARY_PREFIX];
return [code, Order.UNARY_PREFIX];
};

16
generators/dart/variables.js
View File

@@ -12,21 +12,23 @@ import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.Dart.variables');
import {NameType} from '../../core/names.js';
import {dartGenerator as Dart} from '../dart.js';
import {dartGenerator, Order} from '../dart.js';
Dart.forBlock['variables_get'] = function(block) {
dartGenerator.forBlock['variables_get'] = function(block) {
// Variable getter.
const code =
Dart.nameDB_.getName(block.getFieldValue('VAR'), NameType.VARIABLE);
return [code, Dart.ORDER_ATOMIC];
dartGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
return [code, Order.ATOMIC];
};
Dart.forBlock['variables_set'] = function(block) {
dartGenerator.forBlock['variables_set'] = function(block) {
// Variable setter.
const argument0 =
Dart.valueToCode(block, 'VALUE', Dart.ORDER_ASSIGNMENT) || '0';
dartGenerator.valueToCode(block, 'VALUE', Order.ASSIGNMENT) || '0';
const varName =
Dart.nameDB_.getName(block.getFieldValue('VAR'), NameType.VARIABLE);
dartGenerator.nameDB_.getName(
block.getFieldValue('VAR'), NameType.VARIABLE);
return varName + ' = ' + argument0 + ';\n';
};

10
generators/dart/variables_dynamic.js
View File

@@ -11,10 +11,12 @@
import * as goog from '../../closure/goog/goog.js';
goog.declareModuleId('Blockly.Dart.variablesDynamic');
import {dartGenerator as Dart} from '../dart.js';
import {dartGenerator} from '../dart.js';
import './variables.js';
// Dart is dynamically typed.
Dart.forBlock['variables_get_dynamic'] = Dart.forBlock['variables_get'];
Dart.forBlock['variables_set_dynamic'] = Dart.forBlock['variables_set'];
// dartGenerator is dynamically typed.
dartGenerator.forBlock['variables_get_dynamic'] =
dartGenerator.forBlock['variables_get'];
dartGenerator.forBlock['variables_set_dynamic'] =
dartGenerator.forBlock['variables_set'];