add: compiler_unit_parser.

src/parser.rs

@@ -1,3 +1,24 @@
+use std::cell::RefCell;
+use std::rc::Rc;
+use nom::branch::alt;
+use nom::combinator::map;
+use nom::IResult;
+use nom::multi::many1;
+use crate::parser::grammar_parser::{function_declaration_parser, value_declaration_parser};
+use crate::parser::syntax_tree::SyntaxNode;
+use crate::tokenizer::LexicalTokenSpan;
+
 mod syntax_tree;
 mod grammar_parser;
 
+pub fn compiler_unit_parser(cursor: LexicalTokenSpan) -> IResult<LexicalTokenSpan, Rc<RefCell<SyntaxNode>>> {
+    map(
+        many1(alt((
+            value_declaration_parser,
+            function_declaration_parser
+            ))),
+        |blocks| {
+            SyntaxNode::block(&blocks)
+        }
+    )(cursor)
+}

src/parser/grammar_parser.rs

@@ -1,8 +1,8 @@
-use crate::parser::syntax_tree::{BinaryNodeType, SyntaxNode, UnaryNodeType};
+use crate::parser::syntax_tree::{BasicTypes, BinaryNodeType, InitializerNode, SyntaxNode, UnaryNodeType};
 use crate::tokenizer::{LexicalTokenSpan, LexicalTokenType};
 use nom::branch::alt;
 use nom::combinator::{map, opt};
-use nom::multi::{many0, separated_list0};
+use nom::multi::{many0, separated_list0, separated_list1};
 use nom::sequence::tuple;
 use nom::IResult;
 use std::cell::RefCell;
@@ -510,6 +510,7 @@ fn block_parser(cursor: LexicalTokenSpan) -> IResult<LexicalTokenSpan, Rc<RefCel
         tuple((
             lexical!(Delimiter("{")),
             many0(alt((
+                value_declaration_parser,
                 statement_parser,
             ))),
             lexical!(Delimiter("}"))
@@ -520,6 +521,189 @@ fn block_parser(cursor: LexicalTokenSpan) -> IResult<LexicalTokenSpan, Rc<RefCel
     )(cursor)
 }
 
+fn value_initializer_parser(cursor: LexicalTokenSpan) -> IResult<LexicalTokenSpan, Rc<RefCell<InitializerNode>>> {
+    alt((
+        map(
+            tuple((
+                lexical!(Delimiter("{")),
+                separated_list0(lexical!(Delimiter(",")), value_initializer_parser),
+                lexical!(Delimiter("}"))
+            )),
+            |(_, initializers, _)| {
+                InitializerNode::array(initializers)
+            },
+        ),
+        map(
+            expression_parser,
+            |expression| {
+                InitializerNode::single(expression)
+            },
+        )
+    ))(cursor)
+}
+
+type ValueDefinitionParseType<'a> = (Rc<RefCell<SyntaxNode>>, Vec<(LexicalTokenSpan<'a>, Rc<RefCell<SyntaxNode>>, LexicalTokenSpan<'a>)>);
+
+type InitializedValueDefinitionParseType<'a> = (Rc<RefCell<SyntaxNode>>, Vec<(LexicalTokenSpan<'a>, Rc<RefCell<SyntaxNode>>,
+                                                                              LexicalTokenSpan<'a>)>, LexicalTokenSpan<'a>, Rc<RefCell<InitializerNode>>);
+fn value_definition_parser(cursor: LexicalTokenSpan) -> IResult<LexicalTokenSpan, Rc<RefCell<SyntaxNode>>> {
+    alt((
+        map(
+            tuple((
+                identifier_parser,
+                many0(
+                    tuple((
+                        lexical!(Delimiter("[")),
+                        expression_parser,
+                        lexical!(Delimiter("]"))
+                    ))
+                ),
+                lexical!(Operator("=")),
+                value_initializer_parser
+            )),
+            |(identifier, indexers, _, initializer): InitializedValueDefinitionParseType| {
+                SyntaxNode::initialized_value_definition(
+                    &identifier,
+                    indexers.iter().map(|p| &p.1),
+                    &initializer,
+                )
+            },
+        ),
+        map(tuple((
+            identifier_parser,
+            many0(tuple((
+                lexical!(Delimiter("[")),
+                expression_parser,
+                lexical!(Delimiter("]"))
+            )))
+        )),
+            |(identifier, indexers): ValueDefinitionParseType| {
+                SyntaxNode::value_definition(
+                    &identifier,
+                    indexers.iter().map(|p| &p.1),
+                )
+            },
+        )
+    ))(cursor)
+}
+
+fn basic_type_parser(cursor: LexicalTokenSpan) -> IResult<LexicalTokenSpan, BasicTypes> {
+    alt((
+        map(
+            lexical!(Keyword("void")),
+            |_| {
+                BasicTypes::Void
+            },
+        ),
+        map(
+            lexical!(Keyword("int")),
+            |_| {
+                BasicTypes::Integer
+            },
+        ),
+        map(
+            lexical!(Keyword("float")),
+            |_| {
+                BasicTypes::Float
+            },
+        )
+    ))(cursor)
+}
+
+pub fn value_declaration_parser(cursor: LexicalTokenSpan) -> IResult<LexicalTokenSpan, Rc<RefCell<SyntaxNode>>> {
+    alt((
+        map(
+            tuple((
+                lexical!(Keyword("const")),
+                basic_type_parser,
+                separated_list1(lexical!(Delimiter(",")), value_definition_parser),
+                lexical!(Delimiter(";"))
+            )),
+            |(_, basic_type, definitions, _)| {
+                SyntaxNode::value_declaration(
+                    true,
+                    basic_type,
+                    &definitions,
+                )
+            },
+        ),
+        map(
+            tuple((
+                basic_type_parser,
+                separated_list1(lexical!(Delimiter(",")), value_definition_parser),
+                lexical!(Delimiter(";"))
+            )),
+            |(basic_type, definitions, _)| {
+                SyntaxNode::value_declaration(
+                    false,
+                    basic_type,
+                    &definitions,
+                )
+            },
+        )
+    ))(cursor)
+}
+
+type FunctionParameterParseResult<'a> = (BasicTypes,
+                                         Rc<RefCell<SyntaxNode>>,
+                                         Option<(LexicalTokenSpan<'a>,
+                                                 LexicalTokenSpan<'a>,
+                                                 Vec<(LexicalTokenSpan<'a>, Rc<RefCell<SyntaxNode>>, LexicalTokenSpan<'a>)>)>);
+fn function_parameter_parser(cursor: LexicalTokenSpan) -> IResult<LexicalTokenSpan, Rc<RefCell<SyntaxNode>>> {
+    map(
+        tuple((
+            basic_type_parser,
+            identifier_parser,
+            opt(tuple((
+                lexical!(Delimiter("[")),
+                lexical!(Delimiter("]")),
+                many0(tuple((
+                    lexical!(Delimiter("[")),
+                    expression_parser,
+                    lexical!(Delimiter("]")),
+                )))
+            )))
+        )),
+        |(basic_type, identifier, indexers): FunctionParameterParseResult| {
+            let parameters = if let Some(indexers) = indexers {
+                let mut result = vec![SyntaxNode::unit()];
+
+                for indexer in indexers.2 {
+                    result.push(Rc::clone(&indexer.1));
+                }
+
+                result
+            } else {
+                vec![]
+            };
+
+            SyntaxNode::function_parameter(basic_type, &identifier, &parameters)
+        },
+    )(cursor)
+}
+
+
+pub fn function_declaration_parser(cursor: LexicalTokenSpan) -> IResult<LexicalTokenSpan, Rc<RefCell<SyntaxNode>>> {
+    map(
+        tuple((
+            basic_type_parser,
+            identifier_parser,
+            lexical!(Delimiter("(")),
+            separated_list0(lexical!(Delimiter(",")), function_parameter_parser),
+            lexical!(Delimiter(")")),
+            block_parser
+        )),
+        |(basic_type, identifier, _, parameters, _, block)| {
+            SyntaxNode::function_declaration(
+                basic_type,
+                &identifier,
+                &parameters,
+                &block,
+            )
+        },
+    )(cursor)
+}
+
 #[cfg(test)]
 mod test {
     use super::*;
@@ -801,7 +985,7 @@ mod test {
             &SyntaxNode::assign_statement(&SyntaxNode::identifier("i".to_owned()),
                                           &SyntaxNode::const_integer(1)),
         );
-        
+
         validate_syntax_node("if (i == 1) i = 2; else i = 1;", &node.borrow().node_type, if_statement_parser);
         validate_syntax_node("if (i == 1) i = 2; else i = 1;", &node.borrow().node_type, statement_parser);
 
@@ -810,13 +994,13 @@ mod test {
                                      &SyntaxNode::identifier("i".to_owned()), &SyntaxNode::const_integer(1)),
             &SyntaxNode::assign_statement(&SyntaxNode::identifier("i".to_owned()),
                                           &SyntaxNode::const_integer(2)),
-            &SyntaxNode::unit()
+            &SyntaxNode::unit(),
         );
 
         validate_syntax_node("if (i == 1) i = 2;", &node.borrow().node_type, if_statement_parser);
         validate_syntax_node("if (i == 1) i = 2;", &node.borrow().node_type, statement_parser);
     }
-    
+
     #[test]
     fn multiplx_if_statement_test() {
         let node = SyntaxNode::if_statement(
@@ -824,33 +1008,33 @@ mod test {
                                      &SyntaxNode::identifier("i".to_owned()), &SyntaxNode::const_integer(1)),
             &SyntaxNode::if_statement(
                 &SyntaxNode::binary_node(BinaryNodeType::Equal,
-                &SyntaxNode::identifier("i".to_owned()), &SyntaxNode::const_integer(2)),
+                                         &SyntaxNode::identifier("i".to_owned()), &SyntaxNode::const_integer(2)),
                 &SyntaxNode::assign_statement(&SyntaxNode::identifier("i".to_owned()),
                                               &SyntaxNode::const_integer(2)),
                 &SyntaxNode::assign_statement(&SyntaxNode::identifier("i".to_owned()),
-                                              &SyntaxNode::const_integer(1))
+                                              &SyntaxNode::const_integer(1)),
             ),
-        &SyntaxNode::unit()
+            &SyntaxNode::unit(),
         );
 
         validate_syntax_node("if (i == 1) if (i == 2) i = 2; else i = 1;", &node.borrow().node_type, if_statement_parser);
         validate_syntax_node("if (i == 1) if (i == 2) i = 2; else i = 1;", &node.borrow().node_type, statement_parser);
     }
-    
+
     #[test]
     fn while_statement_test() {
         let node = SyntaxNode::while_statement(
             &SyntaxNode::binary_node(BinaryNodeType::NotEqual,
-            &SyntaxNode::identifier("i".to_owned()),
+                                     &SyntaxNode::identifier("i".to_owned()),
-            &SyntaxNode::const_integer(10)),
+                                     &SyntaxNode::const_integer(10)),
             &SyntaxNode::assign_statement(
                 &SyntaxNode::identifier("i".to_owned()),
                 &SyntaxNode::binary_node(BinaryNodeType::Add,
-                &SyntaxNode::identifier("i".to_owned()),
+                                         &SyntaxNode::identifier("i".to_owned()),
-                &SyntaxNode::const_integer(1))
+                                         &SyntaxNode::const_integer(1)),
-            )
+            ),
         );
-        
+
         validate_syntax_node("while (i != 10 ) i = i + 1;", &node.borrow().node_type, while_statement_parser);
         validate_syntax_node("while (i != 10 ) i = i + 1;", &node.borrow().node_type, statement_parser);
     }
@@ -870,23 +1054,152 @@ mod test {
         validate_syntax_node("continue;", &node.borrow().node_type, continue_statement_parser);
         validate_syntax_node("continue;", &node.borrow().node_type, statement_parser);
     }
-    
+
     #[test]
     fn return_statement_test() {
         let node = SyntaxNode::return_statement(
             &SyntaxNode::binary_node(BinaryNodeType::Add,
-            &SyntaxNode::const_integer(1),
+                                     &SyntaxNode::const_integer(1),
-            &SyntaxNode::const_integer(1))
+                                     &SyntaxNode::const_integer(1))
         );
-        
+
         validate_syntax_node("return 1 + 1;", &node.borrow().node_type, return_statement_parser);
         validate_syntax_node("return 1 + 1;", &node.borrow().node_type, statement_parser);
-        
+
         let node = SyntaxNode::return_statement(
             &SyntaxNode::unit()
         );
-        
+
         validate_syntax_node("return;", &node.borrow().node_type, return_statement_parser);
         validate_syntax_node("return;", &node.borrow().node_type, statement_parser);
     }
+
+    #[test]
+    fn value_initializer_test() {
+        let initializer = InitializerNode::single(SyntaxNode::const_integer(1));
+        let (_, tokens) = lexical_parser("1").unwrap();
+        let (_, node) = value_initializer_parser((&tokens).into()).unwrap();
+        assert_eq!(initializer, node);
+
+        let initializer = InitializerNode::array(vec![InitializerNode::single(SyntaxNode::const_integer(1)),
+                                                      InitializerNode::single(SyntaxNode::const_integer(2))]);
+        let (_, tokens) = lexical_parser("{1, 2}").unwrap();
+        let (_, node) = value_initializer_parser((&tokens).into()).unwrap();
+        assert_eq!(initializer, node);
+    }
+
+    #[test]
+    fn value_definition_test() {
+        let node = SyntaxNode::initialized_value_definition(
+            &SyntaxNode::identifier("i".to_owned()),
+            vec![],
+            &InitializerNode::single(SyntaxNode::const_integer(1)),
+        );
+        validate_syntax_node("i = 1", &node.borrow().node_type, value_definition_parser);
+
+        let node = SyntaxNode::value_definition(
+            &SyntaxNode::identifier("array".to_owned()),
+            vec![
+                SyntaxNode::const_integer(100),
+                SyntaxNode::const_integer(10)
+            ].iter(),
+        );
+        validate_syntax_node("array[100][10]", &node.borrow().node_type, value_definition_parser);
+
+        let node = SyntaxNode::initialized_value_definition(
+            &SyntaxNode::identifier("test".to_owned()),
+            vec![
+                SyntaxNode::const_integer(3)
+            ].iter(),
+            &InitializerNode::array(vec![
+                InitializerNode::single(SyntaxNode::const_integer(1)),
+                InitializerNode::single(SyntaxNode::const_integer(2)),
+                InitializerNode::single(SyntaxNode::const_integer(3)),
+            ]),
+        );
+        validate_syntax_node("test[3] = {1,2,3}", &node.borrow().node_type, value_definition_parser);
+    }
+
+    #[test]
+    fn value_declaration_test() {
+        let node1 = SyntaxNode::initialized_value_definition(
+            &SyntaxNode::identifier("i".to_owned()),
+            vec![],
+            &InitializerNode::single(SyntaxNode::const_integer(1)),
+        );
+        let node2 = SyntaxNode::value_definition(
+            &SyntaxNode::identifier("array".to_owned()),
+            vec![
+                SyntaxNode::const_integer(100),
+                SyntaxNode::const_integer(10)
+            ].iter(),
+        );
+        let node = SyntaxNode::value_declaration(
+            false,
+            BasicTypes::Integer,
+            &vec![node1, node2],
+        );
+        validate_syntax_node("int i = 1, array[100][10];", &node.borrow().node_type, value_declaration_parser);
+
+
+        let node = SyntaxNode::initialized_value_definition(
+            &SyntaxNode::identifier("test".to_owned()),
+            vec![
+                SyntaxNode::const_integer(3)
+            ].iter(),
+            &InitializerNode::array(vec![
+                InitializerNode::single(SyntaxNode::const_float(1f32)),
+                InitializerNode::single(SyntaxNode::const_float(2f32)),
+                InitializerNode::single(SyntaxNode::const_float(3f32)),
+            ]),
+        );
+        let node = SyntaxNode::value_declaration(
+            true,
+            BasicTypes::Float,
+            &vec![node],
+        );
+        validate_syntax_node("const float test[3] = {1.0,2.0,3.0};", &node.borrow().node_type, value_declaration_parser);
+    }
+
+    #[test]
+    fn function_parameter_test() {
+        let node = SyntaxNode::function_parameter(BasicTypes::Integer,
+                                                  &SyntaxNode::identifier("a".to_owned()), &vec![]);
+        validate_syntax_node("int a", &node.borrow().node_type, function_parameter_parser);
+
+        let node = SyntaxNode::function_parameter(BasicTypes::Float,
+                                                  &SyntaxNode::identifier("array".to_owned()), &vec![SyntaxNode::unit()]);
+        validate_syntax_node("float array[]", &node.borrow().node_type, function_parameter_parser);
+
+        let node = SyntaxNode::function_parameter(BasicTypes::Integer,
+                                                  &SyntaxNode::identifier("array".to_owned()),
+                                                  &vec![SyntaxNode::unit(), SyntaxNode::const_integer(10)]);
+        validate_syntax_node("int array[][10]", &node.borrow().node_type, function_parameter_parser);
+    }
+
+    #[test]
+    fn function_declaration_test() {
+        let node = SyntaxNode::function_declaration(
+            BasicTypes::Void,
+            &SyntaxNode::identifier("test".to_owned()),
+            &vec![],
+            &SyntaxNode::block(&vec![
+                SyntaxNode::assign_statement(&SyntaxNode::identifier("a".to_owned()), &SyntaxNode::const_integer(1))
+            ]),
+        );
+        validate_syntax_node("void test()\
+        {\
+        a = 1;\
+        }", &node.borrow().node_type, function_declaration_parser);
+        
+        let node = SyntaxNode::function_declaration(
+            BasicTypes::Integer,
+            &SyntaxNode::identifier("empty".to_owned()),
+            &vec![
+                SyntaxNode::function_parameter(BasicTypes::Integer, &SyntaxNode::identifier("a".to_owned()), &vec![])
+            ],
+            &SyntaxNode::block(&vec![])
+        );
+        validate_syntax_node("int empty(int a) {}", &node.borrow().node_type, function_declaration_parser);
+    }
 }

src/parser/syntax_tree.rs

@@ -1,6 +1,6 @@
 use std::cell::RefCell;
 use std::rc::Rc;
-use nom::IResult;
+use crate::parser::syntax_tree::SyntaxNodeType::FunctionParameter;
 
 /// 单元表达式类型
 #[derive(Debug, PartialEq)]
@@ -50,13 +50,6 @@ pub struct FunctionCallNode {
     pub arguments: Vec<Rc<RefCell<SyntaxNode>>>,
 }
 
-#[derive(Debug, PartialEq)]
-pub enum BasicTypes {
-    Void,
-    Integer,
-    Float,
-}
-
 #[derive(Debug, PartialEq)]
 pub struct IfStatementNode {
     pub condition: Rc<RefCell<SyntaxNode>>,
@@ -76,6 +69,58 @@ pub struct AssignStatmentNode {
     pub expression: Rc<RefCell<SyntaxNode>>,
 }
 
+#[derive(Debug, PartialEq)]
+pub enum BasicTypes {
+    Void,
+    Integer,
+    Float,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum InitializerNode {
+    Single(Rc<RefCell<SyntaxNode>>),
+    Array(Vec<Rc<RefCell<InitializerNode>>>),
+}
+
+impl InitializerNode {
+    pub fn single(node: Rc<RefCell<SyntaxNode>>) -> Rc<RefCell<Self>> {
+        Rc::new(RefCell::new(Self::Single(node)))
+    }
+
+    pub fn array(nodes: Vec<Rc<RefCell<InitializerNode>>>) -> Rc<RefCell<Self>> {
+        Rc::new(RefCell::new(Self::Array(nodes)))
+    }
+}
+
+#[derive(Debug, PartialEq)]
+pub struct ValueDefinitionNode {
+    pub identifier: Rc<RefCell<SyntaxNode>>,
+    pub indexers: Vec<Rc<RefCell<SyntaxNode>>>,
+    pub initialzier: Option<Rc<RefCell<InitializerNode>>>,
+}
+
+#[derive(Debug, PartialEq)]
+pub struct ValueDeclarationNode {
+    pub is_constant: bool,
+    pub value_type: BasicTypes,
+    pub definitions: Vec<Rc<RefCell<SyntaxNode>>>,
+}
+
+#[derive(Debug, PartialEq)]
+pub struct FunctionParameterNode {
+    pub parameter_type: BasicTypes,
+    pub identifier: Rc<RefCell<SyntaxNode>>,
+    pub indexers: Vec<Rc<RefCell<SyntaxNode>>>,
+}
+
+#[derive(Debug, PartialEq)]
+pub struct FunctionDeclarationNode {
+    pub function_type: BasicTypes,
+    pub identifier: Rc<RefCell<SyntaxNode>>,
+    pub parameters: Vec<Rc<RefCell<SyntaxNode>>>,
+    pub block: Rc<RefCell<SyntaxNode>>,
+}
+
 /// 语法分析树节点类型
 #[derive(Debug, PartialEq)]
 pub enum SyntaxNodeType {
@@ -96,7 +141,10 @@ pub enum SyntaxNodeType {
     ExpressionStatement(Rc<RefCell<SyntaxNode>>),
     ReturnStatement(Rc<RefCell<SyntaxNode>>),
     Block(Vec<Rc<RefCell<SyntaxNode>>>),
-    BasicTypeNode(BasicTypes),
+    ValueDefinition(ValueDefinitionNode),
+    ValueDeclaration(ValueDeclarationNode),
+    FunctionParameter(FunctionParameterNode),
+    FunctionDeclaration(FunctionDeclarationNode),
 }
 
 /// 语法分析器节点
@@ -180,7 +228,7 @@ impl SyntaxNode {
             node_type: SyntaxNodeType::ReturnStatement(Rc::clone(expression))
         }))
     }
-    
+
     pub fn unit() -> Rc<RefCell<SyntaxNode>> {
         Rc::new(RefCell::new(Self {
             node_type: SyntaxNodeType::Unit
@@ -192,39 +240,101 @@ impl SyntaxNode {
             node_type: SyntaxNodeType::BreakNode
         }))
     }
-    
+
     pub fn continue_statement() -> Rc<RefCell<SyntaxNode>> {
         Rc::new(RefCell::new(Self {
             node_type: SyntaxNodeType::ContinueNode
         }))
     }
-    
+
-    pub fn if_statement(condition: &Rc<RefCell<SyntaxNode>>, 
+    pub fn if_statement(condition: &Rc<RefCell<SyntaxNode>>,
-                        if_statement: &Rc<RefCell<SyntaxNode>>, 
+                        if_statement: &Rc<RefCell<SyntaxNode>>,
                         else_statement: &Rc<RefCell<SyntaxNode>>) -> Rc<RefCell<SyntaxNode>> {
         Rc::new(RefCell::new(Self {
             node_type: SyntaxNodeType::IfStatement(IfStatementNode {
                 condition: Rc::clone(condition),
                 if_statement: Rc::clone(if_statement),
-                else_statement: Rc::clone(else_statement)
+                else_statement: Rc::clone(else_statement),
             })
         }))
     }
-    
+
     pub fn while_statement(condition: &Rc<RefCell<SyntaxNode>>, statement: &Rc<RefCell<SyntaxNode>>) -> Rc<RefCell<SyntaxNode>> {
         Rc::new(RefCell::new(Self {
             node_type: SyntaxNodeType::WhileStatement(WhileStatmentNode {
                 condition: Rc::clone(condition),
-                statement: Rc::clone(statement)
+                statement: Rc::clone(statement),
             })
         }))
     }
-    
+
     pub fn block(statements: &Vec<Rc<RefCell<SyntaxNode>>>) -> Rc<RefCell<SyntaxNode>> {
         Rc::new(RefCell::new(Self {
             node_type: SyntaxNodeType::Block(statements.iter().map(|x| Rc::clone(x)).collect())
         }))
     }
-    
+
-    
+    pub fn value_definition<'a, T>(identifier: &Rc<RefCell<SyntaxNode>>, indexers: T) -> Rc<RefCell<Self>>
+    where
+        T: IntoIterator<Item=&'a Rc<RefCell<SyntaxNode>>>,
+    {
+        Rc::new(RefCell::new(Self {
+            node_type: SyntaxNodeType::ValueDefinition(ValueDefinitionNode {
+                identifier: Rc::clone(identifier),
+                indexers: indexers.into_iter().map(|x| Rc::clone(x)).collect(),
+                initialzier: None,
+            })
+        }))
+    }
+
+    pub fn initialized_value_definition<'a, T>(identifier: &Rc<RefCell<SyntaxNode>>,
+                                               indexers: T,
+                                               initializer: &Rc<RefCell<InitializerNode>>) -> Rc<RefCell<Self>>
+    where
+        T: IntoIterator<Item=&'a Rc<RefCell<SyntaxNode>>>,
+    {
+        Rc::new(RefCell::new(Self {
+            node_type: SyntaxNodeType::ValueDefinition(ValueDefinitionNode {
+                identifier: Rc::clone(identifier),
+                indexers: indexers.into_iter().map(|x| Rc::clone(x)).collect(),
+                initialzier: Some(Rc::clone(initializer)),
+            })
+        }))
+    }
+
+    pub fn value_declaration(is_constant: bool, value_type: BasicTypes, definitions: &Vec<Rc<RefCell<SyntaxNode>>>) -> Rc<RefCell<SyntaxNode>> {
+        Rc::new(RefCell::new(Self {
+            node_type: SyntaxNodeType::ValueDeclaration(ValueDeclarationNode {
+                is_constant,
+                value_type,
+                definitions: definitions.iter().map(|x| Rc::clone(x)).collect(),
+            })
+        }))
+    }
+
+    pub fn function_parameter(parameter_type: BasicTypes,
+                              identifier: &Rc<RefCell<SyntaxNode>>,
+                              indexers: &Vec<Rc<RefCell<SyntaxNode>>>) -> Rc<RefCell<SyntaxNode>> {
+        Rc::new(RefCell::new(Self {
+            node_type: FunctionParameter(FunctionParameterNode {
+                parameter_type,
+                identifier: Rc::clone(identifier),
+                indexers: indexers.iter().map(|x| Rc::clone(x)).collect(),
+            })
+        }))
+    }
+
+    pub fn function_declaration(function_type: BasicTypes,
+                                identifier: &Rc<RefCell<SyntaxNode>>,
+                                parameters: &Vec<Rc<RefCell<SyntaxNode>>>,
+                                block: &Rc<RefCell<SyntaxNode>>) -> Rc<RefCell<Self>> {
+        Rc::new(RefCell::new(Self {
+            node_type: SyntaxNodeType::FunctionDeclaration(FunctionDeclarationNode {
+                function_type,
+                identifier: Rc::clone(identifier),
+                parameters: parameters.iter().map(|x| Rc::clone(x)).collect(),
+                block: Rc::clone(block),
+            })
+        }))
+    }
 }

tests/grammar_tests.rs

@@ -0,0 +1,419 @@
+use nom::InputLength;
+use rustic_sysy::parser::compiler_unit_parser;
+use rustic_sysy::tokenizer::lexical_parser;
+
+fn parse_grammar(input: &'static str) {
+    let (_, tokens) = lexical_parser(input).unwrap();
+    let (remaining, node) = compiler_unit_parser((&tokens).into()).unwrap();
+    dbg!(node);
+
+    assert_eq!(0, remaining.input_len());
+}
+
+#[test]
+fn main_test() {
+    parse_grammar(r"int main(){
+    return 3;
+}");
+}
+
+#[test]
+fn value_definition_test() {
+    parse_grammar(r"//test domain of global var define and local define
+int a = 3;
+int b = 5;
+
+int main(){
+    int a = 5;
+    return a + b;
+}");
+    
+    parse_grammar(r"//test local var define
+int main(){
+    int a, b0, _c;
+    a = 1;
+    b0 = 2;
+    _c = 3;
+    return b0 + _c;
+}");
+    
+    parse_grammar(r"//test const gloal var define
+const int a = 10, b = 5;
+
+int main(){
+    return b;
+}");
+    
+    parse_grammar(r"//test const local var define
+int main(){
+    const int a = 10, b = 5;
+    return b;
+}");
+}
+
+#[test]
+fn array_definition_test() {
+    parse_grammar(r"int a[10][10];
+int main(){
+    return 0;
+}");
+    
+    parse_grammar(r"//test array define
+int main(){
+    int a[4][2] = {};
+    int b[4][2] = {1, 2, 3, 4, 5, 6, 7, 8};
+    int c[4][2] = {{1, 2}, {3, 4}, {5, 6}, {7, 8}};
+    int d[4][2] = {1, 2, {3}, {5}, 7 , 8};
+    int e[4][2] = {{d[2][1], c[2][1]}, {3, 4}, {5, 6}, {7, 8}};
+    return e[3][1] + e[0][0] + e[0][1] + a[2][0];
+}");
+    
+    parse_grammar(r"int main(){
+    const int a[4][2] = {{1, 2}, {3, 4}, {}, 7};
+    const int N = 3;
+    int b[4][2] = {};
+    int c[4][2] = {1, 2, 3, 4, 5, 6, 7, 8};
+    int d[N + 1][2] = {1, 2, {3}, {5}, a[3][0], 8};
+    int e[4][2][1] = {{d[2][1], {c[2][1]}}, {3, 4}, {5, 6}, {7, 8}};
+    return e[3][1][0] + e[0][0][0] + e[0][1][0] + d[3][0];
+}");
+}
+
+#[test]
+fn operator_priority_test() {
+    parse_grammar(r"//test the priority of add and mul
+int main(){
+    int a, b, c, d;
+    a = 10;
+    b = 4;
+    c = 2;
+    d = 2;
+    return c + a * b - d; 
+}");
+    
+    parse_grammar(r"//test the priority of add and mul
+int main(){
+    int a, b, c, d;
+    a = 10;
+    b = 4;
+    c = 2;
+    d = 2;
+    return (c + a) * (b - d); 
+}");
+    
+    parse_grammar(r"//test the priority of  unary operator and binary operator
+int main(){
+    int a, b;
+    a = 10;
+    b = 30;
+    return a - -5 + b + -5;
+}");
+}
+
+#[test]
+fn statement_test() {
+    parse_grammar(r"int k;
+const int n = 10;
+int main () {
+        int i = 0;
+        k = 1;
+        while (i <= n - 1) {
+                i = i + 1;
+                k + 1;
+                k = k + k;
+        }
+        putint(k);
+        return k;
+}");
+    
+    parse_grammar(r"// test if-else-if
+int ifElseIf() {
+  int a;
+  a = 5;
+  int b;
+  b = 10;
+  if(a == 6 || b == 0xb) {
+    return a;
+  }
+  else {
+    if (b == 10 && a == 1)
+      a = 25;
+    else if (b == 10 && a == -5)
+      a = a + 15;
+    else
+      a = -+a;
+  }
+
+  return a;
+}
+
+int main(){
+  putint(ifElseIf());
+  return 0;
+}");
+    
+    parse_grammar(r"// test if-if-else
+int ififElse() {
+  int a;
+  a = 5;
+  int b;
+  b = 10;
+  if(a == 5)
+    if (b == 10) 
+      a = 25;
+    else 
+      a = a + 15;
+    
+  return (a);
+}
+
+int main(){
+  return (ififElse());
+}");
+    
+    parse_grammar(r"// test if-{if-else}
+int if_ifElse_() {
+  int a;
+  a = 5;
+  int b;
+  b = 10;
+  if(a == 5){
+    if (b == 10) 
+      a = 25;
+    else 
+      a = a + 15;
+  }
+  return (a);
+}
+
+int main(){
+  return (if_ifElse_());
+}");
+    
+    parse_grammar(r"// test while-if
+int whileIf() {
+  int a;
+  a = 0;
+  int b;
+  b = 0;
+  while (a < 100) {
+    if (a == 5) {
+      b = 25;
+    }
+    else if (a == 10) {
+      b = 42;  
+    }
+    else {
+      b = a * 2;
+    }
+    a = a + 1;
+  }
+  return (b);
+}
+
+
+int main(){
+  return (whileIf());
+}");
+    
+    parse_grammar(r"int deepWhileBr(int a, int b) {
+  int c;
+  c = a + b;
+  while (c < 75) {
+    int d;
+    d = 42;
+    if (c < 100) {
+      c = c + d;
+      if (c > 99) {
+        int e;
+        e = d * 2;
+        if (1 == 1) {
+          c = e * 2;
+        }
+      }
+    }
+  }
+  return (c);
+}
+
+int main() {
+  int p;
+  p = 2;
+  return deepWhileBr(p, p);
+}");
+}
+
+#[test]
+fn dijkstra_test() {
+    parse_grammar(r"const int INF = 65535;
+int e[16][16];
+int book[16];
+int dis[16];
+int n, m;
+int v1, v2, w;
+
+void Dijkstra()
+{
+    int i, j;
+
+    i = 1;
+    while (i <= n) {
+        dis[i] = e[1][i];
+        book[i] = 0;
+        i = i + 1;
+    }
+    book[1] = 1;
+
+    i = 1;
+    while (i <= n - 1) {
+        int min_num = INF;
+        int min_index = 0;
+        int k = 1;
+        while (k <= n) {
+            if (min_num > dis[k] && book[k] == 0) {
+                min_num = dis[k];
+                min_index = k;
+            }
+            k = k + 1;
+        }
+        book[min_index] = 1;
+        int j = 1;
+        while (j <= n) {
+            if (e[min_index][j] < INF) {
+                if (dis[j] > dis[min_index] + e[min_index][j]) {
+                    dis[j] = dis[min_index] + e[min_index][j];
+                }
+            }
+            j = j + 1;
+        }
+        i = i + 1;
+    }
+}
+
+int main()
+{
+    int i;
+    n = getint();
+    m = getint();
+
+    i = 1;
+    while (i <= n) {
+        int j = 1;
+        while (j <= n) {
+            if (i == j)
+                e[i][j] = 0;
+            else
+                e[i][j] = INF;
+            j = j + 1;
+        }
+        i = i + 1;
+    }
+
+    i = 1;
+    while (i <= m) {
+        int u = getint(), v = getint();
+        e[u][v] = getint();
+        i = i + 1;
+    }
+
+    Dijkstra();
+
+    i = 1;
+    while (i <= n) {
+        putint(dis[i]);
+        putch(32);
+        i = i + 1;
+    }
+    putch(10);
+    return 0;
+}");
+}
+
+#[test]
+fn sort_test() {
+    parse_grammar(r"int n;
+int bubblesort(int arr[])
+{
+    int i;
+    int j;
+    i =0; 
+    while(i < n-1){
+    // Last i elements are already in place
+        j = 0;
+        while(j < n-i-1){
+            if (arr[j] > arr[j+1]) {
+                // swap(&arr[j], &arr[j+1]); 
+                int tmp;
+                tmp = arr[j+1];
+                arr[j+1] = arr[j];
+                arr[j] = tmp;
+            }
+            j = j + 1;
+        }
+        i = i + 1;
+    }
+    return 0;
+}
+
+int main(){
+    n = 10;
+    int a[10];
+    a[0]=4;a[1]=3;a[2]=9;a[3]=2;a[4]=0;
+    a[5]=1;a[6]=6;a[7]=5;a[8]=7;a[9]=8;
+    int i;
+    i = bubblesort(a);
+    while (i < n) {
+        int tmp;
+        tmp = a[i];
+        putint(tmp);
+        tmp = 10;
+        putch(tmp);
+        i = i + 1;
+    }
+    return 0;
+}");
+    
+    parse_grammar(r"int n;
+int insertsort(int a[])
+{
+    int i;
+    i = 1;
+    while(i<n)     
+    {
+        int temp;
+        temp=a[i]; 
+        int j;
+        j=i-1;
+        while(j>-1&&temp<a[j])
+        {
+            a[j+1]=a[j];  
+            j = j - 1;
+        }
+        a[j+1]=temp; 
+        i = i + 1;
+    }
+    return 0;
+}
+
+int main(){
+    n = 10;
+    int a[10];
+    a[0]=4;a[1]=3;a[2]=9;a[3]=2;a[4]=0;
+    a[5]=1;a[6]=6;a[7]=5;a[8]=7;a[9]=8;
+    int i;
+    i = insertsort(a);
+    while (i < n) {
+        int tmp;
+        tmp = a[i];
+        putint(tmp);
+        tmp = 10;
+        putch(tmp);
+        i = i + 1;
+    }
+    return 0;
+}");
+}
+
+    
+
+