Source codes which show supported syntax constructs in one place for various programming languages can be found in the directory. Several examples will be shown below.
$ linvast ast
ERROR(S):
A required value not bound to option name is missing.
-v, --verbose (Default: false) Verbose output
-o, --output Output path
-c, --compact (Default: false) Compact AST output
--help Display this help screen.
--version Display version information.
value pos. 0 Required. Source pathint gl_y = 2;
void f(int x);
int gl_x = 3;
int main()
{
int x = 1;
//printf("Hello world!% d\n", x);
return 0;
}
static int gl_z;$ linvast ast -v sample.c Click to expand!
{
"Name": null,
"NodeType": "SourceNode",
"Line": 1,
"Children": [
{
"NodeType": "DeclStatNode",
"Line": 1,
"Children": [
{
"Modifiers": {
"AccessModifiers": "Unspecified",
"QualifierFlags": "None"
},
"TypeName": "int",
"NodeType": "DeclSpecsNode",
"Line": 1,
"Children": []
},
{
"NodeType": "DeclListNode",
"Line": 1,
"Children": [
{
"Pointer": false,
"NodeType": "VarDeclNode",
"Line": 1,
"Children": [
{
"Identifier": "gl_y",
"NodeType": "IdNode",
"Line": 1,
"Children": []
},
{
"Value": 2,
"Suffix": null,
"TypeCode": "Int32",
"NodeType": "LitExprNode",
"Line": 1,
"Children": []
}
]
}
]
}
]
},
{
"NodeType": "DeclStatNode",
"Line": 3,
"Children": [
{
"Modifiers": {
"AccessModifiers": "Unspecified",
"QualifierFlags": "None"
},
"TypeName": "void",
"NodeType": "DeclSpecsNode",
"Line": 3,
"Children": []
},
{
"NodeType": "DeclListNode",
"Line": 3,
"Children": [
{
"Pointer": false,
"NodeType": "FuncDeclNode",
"Line": 3,
"Children": [
{
"Identifier": "f",
"NodeType": "IdNode",
"Line": 3,
"Children": []
},
{
"IsVariadic": false,
"NodeType": "FuncParamsNode",
"Line": 3,
"Children": [
{
"NodeType": "FuncParamNode",
"Line": 3,
"Children": [
{
"Modifiers": {
"AccessModifiers": "Unspecified",
"QualifierFlags": "None"
},
"TypeName": "int",
"NodeType": "DeclSpecsNode",
"Line": 3,
"Children": []
},
{
"Pointer": false,
"NodeType": "VarDeclNode",
"Line": 3,
"Children": [
{
"Identifier": "x",
"NodeType": "IdNode",
"Line": 3,
"Children": []
}
]
}
]
}
]
}
]
}
]
}
]
},
{
"NodeType": "DeclStatNode",
"Line": 5,
"Children": [
{
"Modifiers": {
"AccessModifiers": "Unspecified",
"QualifierFlags": "None"
},
"TypeName": "int",
"NodeType": "DeclSpecsNode",
"Line": 5,
"Children": []
},
{
"NodeType": "DeclListNode",
"Line": 5,
"Children": [
{
"Pointer": false,
"NodeType": "VarDeclNode",
"Line": 5,
"Children": [
{
"Identifier": "gl_x",
"NodeType": "IdNode",
"Line": 5,
"Children": []
},
{
"Value": 3,
"Suffix": null,
"TypeCode": "Int32",
"NodeType": "LitExprNode",
"Line": 5,
"Children": []
}
]
}
]
}
]
},
{
"NodeType": "FuncDefNode",
"Line": 8,
"Children": [
{
"Modifiers": {
"AccessModifiers": "Unspecified",
"QualifierFlags": "None"
},
"TypeName": "int",
"NodeType": "DeclSpecsNode",
"Line": 8,
"Children": []
},
{
"Pointer": false,
"NodeType": "FuncDeclNode",
"Line": 8,
"Children": [
{
"Identifier": "main",
"NodeType": "IdNode",
"Line": 8,
"Children": []
}
]
},
{
"NodeType": "BlockStatNode",
"Line": 10,
"Children": [
{
"NodeType": "DeclStatNode",
"Line": 10,
"Children": [
{
"Modifiers": {
"AccessModifiers": "Unspecified",
"QualifierFlags": "None"
},
"TypeName": "int",
"NodeType": "DeclSpecsNode",
"Line": 10,
"Children": []
},
{
"NodeType": "DeclListNode",
"Line": 10,
"Children": [
{
"Pointer": false,
"NodeType": "VarDeclNode",
"Line": 10,
"Children": [
{
"Identifier": "x",
"NodeType": "IdNode",
"Line": 10,
"Children": []
},
{
"Value": 1,
"Suffix": null,
"TypeCode": "Int32",
"NodeType": "LitExprNode",
"Line": 10,
"Children": []
}
]
}
]
}
]
},
{
"Type": "Return",
"NodeType": "JumpStatNode",
"Line": 12,
"Children": [
{
"Value": 0,
"Suffix": null,
"TypeCode": "Int32",
"NodeType": "LitExprNode",
"Line": 12,
"Children": []
}
]
}
]
}
]
},
{
"NodeType": "DeclStatNode",
"Line": 15,
"Children": [
{
"Modifiers": {
"AccessModifiers": "Unspecified",
"QualifierFlags": "Static"
},
"TypeName": "int",
"NodeType": "DeclSpecsNode",
"Line": 15,
"Children": []
},
{
"NodeType": "DeclListNode",
"Line": 15,
"Children": [
{
"Pointer": false,
"NodeType": "VarDeclNode",
"Line": 15,
"Children": [
{
"Identifier": "gl_z",
"NodeType": "IdNode",
"Line": 15,
"Children": []
}
]
}
]
}
]
}
]
}function fact (n)
if n == 0 then
return 1
else
return n * fact(n-1)
end
end$ linvast ast -vc sample.luaClick to expand!
{"Name":null,"NodeType":"SourceNode","Line":1,"Children":[{"NodeType":"FuncDefNode","Line":1,"Children":[{"Modifiers":{"AccessModifiers":"Unspecified","QualifierFlags":"None"},"TypeName":"object","NodeType":"DeclSpecsNode","Line":1,"Children":[]},{"Pointer":false,"NodeType":"FuncDeclNode","Line":1,"Children":[{"Identifier":"fact","NodeType":"IdNode","Line":1,"Children":[]},{"IsVariadic":false,"NodeType":"FuncParamsNode","Line":1,"Children":[{"NodeType":"FuncParamNode","Line":1,"Children":[{"Modifiers":{"AccessModifiers":"Unspecified","QualifierFlags":"None"},"TypeName":"object","NodeType":"DeclSpecsNode","Line":1,"Children":[]},{"Pointer":false,"NodeType":"VarDeclNode","Line":1,"Children":[{"Identifier":"n","NodeType":"IdNode","Line":1,"Children":[]}]}]}]}]},{"NodeType":"BlockStatNode","Line":2,"Children":[{"NodeType":"IfStatNode","Line":2,"Children":[{"NodeType":"RelExprNode","Line":2,"Children":[{"Identifier":"n","NodeType":"IdNode","Line":2,"Children":[]},{"Symbol":"==","NodeType":"RelOpNode","Line":2,"Children":[]},{"Value":0,"Suffix":null,"TypeCode":"Int32","NodeType":"LitExprNode","Line":2,"Children":[]}]},{"NodeType":"BlockStatNode","Line":3,"Children":[{"Type":"Return","NodeType":"JumpStatNode","Line":3,"Children":[{"NodeType":"ExprListNode","Line":3,"Children":[{"Value":1,"Suffix":null,"TypeCode":"Int32","NodeType":"LitExprNode","Line":3,"Children":[]}]}]}]},{"NodeType":"BlockStatNode","Line":5,"Children":[{"Type":"Return","NodeType":"JumpStatNode","Line":5,"Children":[{"NodeType":"ExprListNode","Line":5,"Children":[{"NodeType":"ArithmExprNode","Line":5,"Children":[{"Identifier":"n","NodeType":"IdNode","Line":5,"Children":[]},{"Symbol":"*","NodeType":"ArithmOpNode","Line":5,"Children":[]},{"NodeType":"FuncCallExprNode","Line":5,"Children":[{"Identifier":"fact","NodeType":"IdNode","Line":5,"Children":[]},{"NodeType":"ExprListNode","Line":5,"Children":[{"NodeType":"ArithmExprNode","Line":5,"Children":[{"Identifier":"n","NodeType":"IdNode","Line":5,"Children":[]},{"Symbol":"-","NodeType":"ArithmOpNode","Line":5,"Children":[]},{"Value":1,"Suffix":null,"TypeCode":"Int32","NodeType":"LitExprNode","Line":5,"Children":[]}]}]}]}]}]}]}]}]}]}]}]}Several samples can be found in the directory. One sample will be shown below.
$ linvast cmp
ERROR(S):
A required value not bound to option name is missing.
-v, --verbose Set output to verbose messages.
--help Display this help screen.
--version Display version information.
value pos. 0 Required. Specification path.
value pos. 1 Required. Test source path.Sources:
$ linvast cmp Samples/swap/valid.c Samples/swap/wrong.c
Sources:
$ linvast cmp Samples/swap/valid.psc Samples/swap/wrong.c
Sources:
(Note: Overflow is not checked at the moment)
$ linvast cmp Samples/swap/valid.c Samples/swap/refactor.c