greg
0e3aaa8b08
Add conditional expression support
2017-09-19 22:10:56 -07:00
greg
f33cfdadfe
Fix variable lookup order
...
Evaluator uses frames as a stack, so to find the most-recent variable
binding we have to iterate through it the reverse way. This fixes a bug
manifested by:
fn a(x)
x + 20
end
fn b(x)
a(x) + 20
end
2017-09-19 22:10:56 -07:00
greg
231de69084
Added infrastructure for reading files
2017-09-19 22:10:56 -07:00
greg
f014c1a9d9
Kill compiler warnings
2017-09-19 22:10:56 -07:00
greg
c36bc3377e
Fix lookup_binding in function call case
2017-09-19 22:10:56 -07:00
greg
5eba222679
Variable binding in fucntion call work
2017-09-19 22:10:56 -07:00
greg
dcf89aa429
Move lookup_function back onto Evaluator
...
THe problem was that we were borrowing the output of the inner HashMap,
if we clone it we don't borrow anything
2017-09-19 22:10:56 -07:00
greg
1ffbeb6472
Return last value out of function
2017-09-19 22:10:56 -07:00
greg
f8a521fc9b
Start making function calls work
...
This commit isn't fully done yet
2017-09-19 22:10:56 -07:00
greg
77f72806be
Add support for multiple frames
2017-09-19 22:10:56 -07:00
greg
dcde5d6018
Start function call reduction
...
Move the varmap and funcmap functions to the Evaluator, to mkae it
easier to facilitate separate frames
2017-09-19 22:10:56 -07:00
greg
6bb227d052
Rename methods
...
make reduce() the entry point to evaluation
2017-09-19 22:10:56 -07:00
greg
29d4cb53a4
Add infrastructure to do function evaluation
...
Right now you can successfully evaluate a function definition (returning
Null), but cannot call a function
2017-09-19 22:10:56 -07:00
greg
3915c1f035
Remove println from reduction
2017-09-19 22:10:56 -07:00
greg
b400796e4d
Get rid of test variable input
2017-09-19 22:10:56 -07:00
greg
96e6a87f64
Add string concat
2017-09-19 22:10:56 -07:00
greg
b1f9e5cefc
Fix variable lookup
2017-09-19 22:10:56 -07:00
greg
be36d4697d
Pretty-print evaluated AST nodes
2017-09-19 22:10:56 -07:00
greg
ce8c511929
Evaluate additional operators
2017-09-19 22:10:55 -07:00
greg
a8cafa8c64
Move Evaluator state into interpreter state
2017-09-19 22:10:55 -07:00
greg
229e6ae733
More expression parsing work
2017-09-19 22:10:55 -07:00
greg
e9dd0d9ae8
Add concept of Null expression
...
Finally, the null-only behavior is starting to manifest itself!
2017-09-19 22:10:55 -07:00
greg
15d4317191
Add null expression
2017-09-19 22:10:55 -07:00
greg
7114e446a4
Adding, subtracting works
2017-09-19 22:10:55 -07:00
greg
044f534ac5
Start implementing variable lookup
2017-09-19 22:10:55 -07:00
greg
d3207ad890
Move evaluation logic back into methods
...
They need to be able to access the environment which is stored in the
Evalator struct
2017-09-19 22:10:55 -07:00
greg
19fffd5063
Variable binding infrastructure
2017-09-19 22:10:55 -07:00
greg
785c916ece
Start reducing ASTs
...
Start writing code to reduce AST nodes
q
2017-09-19 22:10:55 -07:00
greg
5a9ebb188d
Make Evaluable trait
2017-09-19 22:10:55 -07:00
greg
16e8d969be
Add basic evaluation
2017-09-19 22:10:55 -07:00
greg
70bf68d9bd
More concision in parser
2017-09-19 22:10:55 -07:00
greg
f53c14535b
Made error! macro more programtic
...
TODO implement Display on Token so we're not just displaying the debug
name of the token enum variants
2017-09-19 22:10:55 -07:00
greg
4f96abd7d9
Changes to make the code more concise
2017-09-19 22:10:55 -07:00
greg
fdaf4c302c
Fix all compiler warnings
2017-09-19 22:10:55 -07:00
greg
8ce53d7c72
Fix bind error
2017-09-19 22:10:55 -07:00
greg
428d560e2a
Add tests for call expr parsing
2017-09-19 22:10:55 -07:00
greg
80bc7ec089
Proper call expression parsing
2017-09-19 22:10:55 -07:00
greg
e6591b80d9
Add paren test
2017-09-19 22:10:55 -07:00
greg
e099f713ad
Add binop parsing test
2017-09-19 22:10:55 -07:00
greg
9b54256521
Import types for breivty
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and rename function to be explicit
2017-09-19 22:10:55 -07:00
greg
087402ece6
Add more tests
...
Need to use box patterns
2017-09-19 22:10:55 -07:00
greg
252b6e8bd9
Okay, this strategy makes the test work
2017-09-19 22:10:55 -07:00
greg
b1163e2ae4
Operator-precedence parsing + tests
...
The tests are crippled now, because it's hard to write a test macro that
can also match on Strings
2017-09-19 22:10:55 -07:00
greg
032d01c9f5
Fix tokenization bug
2017-09-19 22:10:55 -07:00
greg
c4ab1ed105
Fix tokenizer tests
2017-09-19 22:10:55 -07:00
greg
9a257f08d7
Introduce Op type
...
For operator parsing
2017-09-19 22:10:55 -07:00
greg
47d56a7b44
fix operator parsing
2017-09-19 22:10:55 -07:00
greg
1f7ae2e30f
Paren expression
2017-09-19 22:10:55 -07:00
greg
e3c8753a4d
Expression parsing
2017-09-19 22:10:55 -07:00
greg
e1aa7ecb17
Finish tokenizing Op separately
2017-09-19 22:10:55 -07:00
