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Цепочка вызовов функций

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Victor 2016-07-31 14:09:23 +03:00
parent 06fe09ce98
commit 5f71e9a9be
1 changed files with 22 additions and 5 deletions
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23
src/main/java/com/annimon/ownlang/parser/Parser.java
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@ -159,7 +159,7 @@ public final class Parser {
return new ExprStatement(match()); return new ExprStatement(match());
} }
if (lookMatch(0, TokenType.WORD) && lookMatch(1, TokenType.LPAREN)) { if (lookMatch(0, TokenType.WORD) && lookMatch(1, TokenType.LPAREN)) {
return new ExprStatement(function(qualifiedName())); return new ExprStatement(functionChain(qualifiedName()));
} }
return assignmentStatement(); return assignmentStatement();
} }
@ -297,6 +297,23 @@ public final class Parser {
return statementOrBlock(); return statementOrBlock();
} }
private Expression functionChain(Expression qualifiedNameExpr) {
// f1().f2().f3() || f1().key
final Expression expr = function(qualifiedNameExpr);
if (lookMatch(0, TokenType.DOT)) {
final List<Expression> indices = variableSuffix();
if (indices == null | indices.isEmpty()) return expr;
if (lookMatch(0, TokenType.LPAREN)) {
// next function call
return functionChain(new ContainerAccessExpression(expr, indices));
}
// container access
return new ContainerAccessExpression(expr, indices);
}
return expr;
}
private FunctionalExpression function(Expression qualifiedNameExpr) { private FunctionalExpression function(Expression qualifiedNameExpr) {
// function(arg1, arg2, ...) // function(arg1, arg2, ...)
consume(TokenType.LPAREN); consume(TokenType.LPAREN);
@ -688,14 +705,14 @@ public final class Parser {
private Expression variable() { private Expression variable() {
// function(... // function(...
if (lookMatch(0, TokenType.WORD) && lookMatch(1, TokenType.LPAREN)) { if (lookMatch(0, TokenType.WORD) && lookMatch(1, TokenType.LPAREN)) {
return function(new ValueExpression(consume(TokenType.WORD).getText())); return functionChain(new ValueExpression(consume(TokenType.WORD).getText()));
} }
final Expression qualifiedNameExpr = qualifiedName(); final Expression qualifiedNameExpr = qualifiedName();
if (qualifiedNameExpr != null) { if (qualifiedNameExpr != null) {
// variable(args) || arr["key"](args) || obj.key(args) // variable(args) || arr["key"](args) || obj.key(args)
if (lookMatch(0, TokenType.LPAREN)) { if (lookMatch(0, TokenType.LPAREN)) {
return function(qualifiedNameExpr); return functionChain(qualifiedNameExpr);
} }
// postfix increment/decrement // postfix increment/decrement
if (match(TokenType.PLUSPLUS)) { if (match(TokenType.PLUSPLUS)) {