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This commit is contained in:
Christian
2015-02-23 14:38:44 +01:00
parent 261786d909
commit c8b03c51a0
3 changed files with 47 additions and 38 deletions
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Parser.h
+16 -10
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@@ -84,15 +84,15 @@ private:
ASTPointer<VariableDeclarationStatement> parseVariableDeclarationStatement(
ASTPointer<TypeName> const& _lookAheadArrayType = ASTPointer<TypeName>());
ASTPointer<ExpressionStatement> parseExpressionStatement(
ASTPointer<Expression> const& _lookAheadArrayExpression = ASTPointer<Expression>());
ASTPointer<Expression> const& _lookAheadIndexAccessStructure = ASTPointer<Expression>());
ASTPointer<Expression> parseExpression(
ASTPointer<Expression> const& _lookAheadArrayExpression = ASTPointer<Expression>());
ASTPointer<Expression> const& _lookAheadIndexAccessStructure = ASTPointer<Expression>());
ASTPointer<Expression> parseBinaryExpression(int _minPrecedence = 4,
ASTPointer<Expression> const& _lookAheadArrayExpression = ASTPointer<Expression>());
ASTPointer<Expression> const& _lookAheadIndexAccessStructure = ASTPointer<Expression>());
ASTPointer<Expression> parseUnaryExpression(
ASTPointer<Expression> const& _lookAheadArrayExpression = ASTPointer<Expression>());
ASTPointer<Expression> const& _lookAheadIndexAccessStructure = ASTPointer<Expression>());
ASTPointer<Expression> parseLeftHandSideExpression(
ASTPointer<Expression> const& _lookAheadArrayExpression = ASTPointer<Expression>());
ASTPointer<Expression> const& _lookAheadIndexAccessStructure = ASTPointer<Expression>());
ASTPointer<Expression> parsePrimaryExpression();
std::vector<ASTPointer<Expression>> parseFunctionCallListArguments();
std::pair<std::vector<ASTPointer<Expression>>, std::vector<ASTPointer<ASTString>>> parseFunctionCallArguments();
@@ -101,16 +101,22 @@ private:
///@{
///@name Helper functions
/// Used as return value of @see peekStatementType.
enum class LookAheadInfo
{
IndexAccessStructure, VariableDeclarationStatement, ExpressionStatement
};
/// Performs limited look-ahead to distinguish between variable declaration and expression statement.
/// @returns 1 if it is a variable declaration, -1 if it is an expression statement and 0 if
/// it might be an array-typed variable declaration or an index access to an existing variable.
int peekVariableDeclarationStatement() const;
/// For source code of the form "a[][8]" ("IndexAccessStructure"), this it is not possible to
/// decide with constant look-ahead.
LookAheadInfo peekStatementType() const;
/// Returns a typename parsed in look-ahead fashion from something like "a[8][2**70]".
ASTPointer<TypeName> typeNameFromArrayIndexStructure(
ASTPointer<TypeName> typeNameIndexAccessStructure(
ASTPointer<PrimaryExpression> const& _primary,
std::vector<std::pair<ASTPointer<Expression>, Location>> const& _indices);
/// Returns an expression parsed in look-ahead fashion from something like "a[8][2**70]".
ASTPointer<Expression> expressionFromArrayIndexStructure(
ASTPointer<Expression> expressionFromIndexAccessStructure(
ASTPointer<PrimaryExpression> const& _primary,
std::vector<std::pair<ASTPointer<Expression>, Location>> const& _indices);
/// If current token value is not _value, throw exception otherwise advance token.