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AST: ensure and else blocks

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This commit is contained in:
Arthur Baars
2021-02-11 11:32:00 +01:00
parent 6c63bd2586
commit 426bf30822
6 changed files with 113 additions and 79 deletions
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8
ql/src/codeql_ruby/ast/Expr.qll
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@@ -145,6 +145,14 @@ class ExprSequence extends Expr {
*/
class BodyStatement extends ExprSequence {
override BodyStatement::Range range;
/** Gets the `else` block in this block, if any. */
final ExprSequence getElse() { result = range.getElse() }
/** Gets the `ensure` block in this block, if any. */
final ExprSequence getEnsure() { result = range.getEnsure() }
final predicate hasEnsure() { exists(this.getEnsure()) }
}
/**

2
ql/src/codeql_ruby/ast/internal/AST.qll
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@@ -33,8 +33,6 @@ module AstNode {
this = any(Generated::Call c).getMethod() and
not this instanceof Generated::ScopeResolution
or
this instanceof Generated::Ensure
or
this instanceof Generated::Rescue
or
this instanceof Generated::Constant

30
ql/src/codeql_ruby/ast/internal/Expr.qll
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@@ -184,7 +184,25 @@ module ExprSequence {
}
module BodyStatement {
abstract class Range extends ExprSequence::Range { }
abstract class Range extends ExprSequence::Range {
final override Expr getExpr(int n) {
result =
rank[n + 1](Generated::AstNode node, int i |
node = getChild(i) and
not node instanceof Generated::Else and
not node instanceof Generated::Rescue and
not node instanceof Generated::Ensure
|
node order by i
)
}
final ExprSequence getElse() { result = unique(Generated::Else s | s = getChild(_)) }
final ExprSequence getEnsure() { result = unique(Generated::Ensure s | s = getChild(_)) }
abstract Generated::AstNode getChild(int i);
}
}
module ParenthesizedExpr {
@@ -227,6 +245,16 @@ module DoExpr {
}
}
module Ensure {
class Range extends ExprSequence::Range, @ensure {
final override Generated::Ensure generated;
final override Expr getExpr(int n) { result = generated.getChild(n) }
final override string toString() { result = "ensure ... end" }
}
}
module ScopeResolution {
class Range extends Expr::Range, @scope_resolution {
final override Generated::ScopeResolution generated;

8
ql/src/codeql_ruby/ast/internal/Method.qll
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@@ -23,7 +23,7 @@ module Method {
final predicate isSetter() { generated.getName() instanceof Generated::Setter }
final override Expr getExpr(int i) { result = generated.getChild(i) }
final override Generated::AstNode getChild(int i) { result = generated.getChild(i) }
final override string toString() { result = this.getName() }
}
@@ -41,7 +41,7 @@ module SingletonMethod {
result = generated.getName().(Generated::Setter).getName().getValue() + "="
}
final override Expr getExpr(int i) { result = generated.getChild(i) }
final override Generated::AstNode getChild(int i) { result = generated.getChild(i) }
final override string toString() { result = this.getName() }
}
@@ -55,7 +55,7 @@ module Lambda {
result = generated.getParameters().getChild(n)
}
final override Expr getExpr(int i) {
final override Generated::AstNode getChild(int i) {
result = generated.getBody().(Generated::DoBlock).getChild(i) or
result = generated.getBody().(Generated::Block).getChild(i)
}
@@ -74,7 +74,7 @@ module DoBlock {
class Range extends Block::Range, BodyStatement::Range, @do_block {
final override Generated::DoBlock generated;
final override Expr getExpr(int i) { result = generated.getChild(i) }
final override Generated::AstNode getChild(int i) { result = generated.getChild(i) }
final override Parameter::Range getParameter(int n) {
result = generated.getParameters().getChild(n)

6
ql/src/codeql_ruby/ast/internal/Module.qll
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@@ -10,7 +10,7 @@ module Class {
class Range extends ModuleBase::Range, @class {
final override Generated::Class generated;
final override Expr getExpr(int i) { result = generated.getChild(i) }
final override Generated::AstNode getChild(int i) { result = generated.getChild(i) }
final string getName() {
result = generated.getName().(Generated::Token).getValue() or
@@ -29,7 +29,7 @@ module SingletonClass {
class Range extends ModuleBase::Range, @singleton_class {
final override Generated::SingletonClass generated;
final override Expr getExpr(int i) { result = generated.getChild(i) }
final override Generated::AstNode getChild(int i) { result = generated.getChild(i) }
final Expr getValue() { result = generated.getValue() }
@@ -41,7 +41,7 @@ module Module {
class Range extends ModuleBase::Range, @module {
final override Generated::Module generated;
final override Expr getExpr(int n) { result = generated.getChild(n) }
final override Generated::AstNode getChild(int i) { result = generated.getChild(i) }
final string getName() {
result = generated.getName().(Generated::Token).getValue() or