scanlib's Introduction

Scanlib

Use Scanspec Validate input files and generate input code in different programming languages.

Scanspec

Learn more about Scanspec here.

Examples

Two Integers

3 2

var A, B int
scan A, B
check A >= 0, A < 10, B >= 0, B < 20
eol
eof

// Generated using Scanlib

#include <iostream>

using namespace std;

int main() {
	int A, B;
	cin >> A;
	cin >> B;
	
	return 0;
}

# Generated using Scanlib

A, B = map(int, input().split())

R, C, and Grid

3 5
**...
..*..
....*

var R, C int
scan R, C
check R >= 1, R < 25, C >= 1, C < 25
eol
var G [R]string
for i := 0 ... R
	scan G[i]
	check len(G[i]) == C
	check re(G[i], "^[*.]+$")
	eol
end
eof

// Generated using Scanlib

#include <iostream>
#include <string>

using namespace std;

int main() {
	int R, C;
	cin >> R;
	cin >> C;
	string G[R];
	for (int i = 0; i < R; ++i) {
		cin >> G[i];
	}
	
	return 0;
}

# Generated using Scanlib

R, C = map(int, input().split())
G = [""] * R
for i in range(0, R):
	G[i] = input()

Specification

Comments

A comment begins with the # character, and ends at the end of the line. A comment cannot begin within a string literal.

# This is a comment

Keywords

check eof eol for scan var

Types

bool
int
int64
float32
float64
string
[]T

Check Statements

check n > 0, n < 1000
check e > 0, f < 5.0

Variable Declarations

var n int
var e, f float64
var a, b string
var G [R]string

Scan Statements

scan n
scan a, e
scan e, f, n
scan G[2]

If Statements

if q == 1
	scan i, G[i]
else if q == 2
	scan a
else if q == 3
	scan l, h
else
	scan G[q]
end

For Range Statements

for i := 0 ... n
	scan G[i]
end

For Scan/Scanln Statements

var s string
var i int
for scan s, i
	# Scans s and i repeatedly until EOF
end

var s string
for scanln s
	# Scans line to s repeatedly until EOF
end

EOL Statements

The following indicates end of line.

eol

EOL Statements

The following indicates end of file.

eof

Built-in Functions

len(a): Returns the length of array a.
re(s, x): Returns true if string s matches regular expression x.
pow(n, e): Returns n raised to the power of e. Result is int or int64 if both n and e are int or int64, otherwise float64.
toInt64(s, b=10): Parses string s in base b and returns in int64.

TODO

scanlib's People

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scanlib's Issues

Checking space formatting of input

Suppose problem statement says an array is given input as N space-separated integers in a single line.

Any suggestion on how we can check if test cases strictly follow such claim?

Mainly, I want to check if there is a single space between two integers, no space at start or end of the array, all integers are in a single line etc.

One way for doing this currently is taking the whole line input as a string and parse the integers from their manually (provided each character in the string can be accessed separately). We can then use regex on the string to check the space formatting and such.

If something like sscanf or stringstream from C/C++ is supported, then it would be much easier as the parsing from string would not need manual handling then while we can still use the regex on the string.

Suggestion: Adding character data type with ascii comparison or other method to validate alphabet of string

Suppose I want to validate that each character of a string is an uppercase Latin alphabet letter.

But I am not sure if this is possible with current features of scanlib.

Maybe something like the following would be useful in such case.

var S string
scan S
check 1 <= len(S), len(S) <= 50000
eol

for i := 0 ... len(S)
    check 'A' <= S[i], S[i] <= 'Z'

Recommend Projects

furqansoftware / scanlib Goto Github PK

scanlib's Introduction

Scanlib

Scanspec

Examples

Two Integers

R, C, and Grid

Specification

Comments

Keywords

Types

Check Statements

Variable Declarations

Scan Statements

If Statements

For Range Statements

For Scan/Scanln Statements

EOL Statements

EOL Statements

Built-in Functions

TODO

scanlib's People

Contributors

Stargazers

Watchers

scanlib's Issues

Recommend Projects

Recommend Topics

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