parscan - experimental interpreter

Age	Commit message (Collapse)	Author
2023-11-20	parser: add support for slices and arrays, parse index expressions	Marc Vertes

2023-11-17	parser: support selector expression to get / set struct fields	Marc Vertes
	The structures are reresented by reflect values. New instructions `Field` and `Vassign` have been added to the VM to assign reflect values and access struct fields.
2023-11-15	parser: parse struct type declarations	Marc Vertes
	Recursive structs and embedded structs are not supported yet.
2023-11-15	parser: hande const declarations	Marc Vertes
	Only symbols are produced, no bytecode is emitted. The constant expressions are evaluated at compile time using the stdlib package go/constant. The parser handles implicit repetition of the last non-empty expression list. The iota symbol is reset to 0 and incremented for each line of a const block. To be done in a next commit: type conversions.
2023-11-13	parser: initial support for type declarations.	Marc Vertes
	The parsing logic for type declarations is there. Note that no tokens are produced, only symbols. The different type kinds will be added next.
2023-11-10	parser: implement support for var declarations	Marc Vertes
	The full Go syntax is supported, blocks or line, mutiple comma separated variables, assignments. In local and global frame.
2023-11-07	parser: implement switch statement	Marc Vertes
	A VM instruction `EqualSet` has been added to preserve the left operand on the stack in case of failure, to allow efficient multiple tests on the same value. Both the pattern 'if/else if' and the classical case clauses have been implemented.
2023-11-04	fix: skip parsing empty expression	Marc Vertes

2023-10-21	parser: implement operator precedence rules in expressions	Marc Vertes

2023-10-14	parser: implement label, goto and continue statements	Marc Vertes

2023-10-13	parser: implement 'break' statement	Marc Vertes

2023-10-12	parser: implement 'for' statement	Marc Vertes

2023-10-12	move to a direct byte code compiler (#8)	Marc Vertes
	* chore: refactor to keep only the new parser and bytecode vm * scanner: remove Token.value field * scanner: remove scanner.kind field * chore: move language specification in lang package This avoid a cyclic dependency in scanner_test which can now use the golang/GoSpec language specification for Go. * clean code * scanner: export scanner fields Also parser now generate function calls, including externals. * chore: fix lint issues * parser: handle strings * wip * parser: implement support for 'if, else, else if' statements Resolving labels in the compiler still in progress. * parser: support if statements, improve compiler * improve handling of functions * improve support of local variables * scanner: trim leading and trailing spaces * fixes to make fibonacci work * parser: improve README, fix function parameters parsing
2023-09-06	scanner: add automatic insertion of semi-colon after newline	Marc Vertes
	As specified in the Go specification, adapted to the following: - the scanner recognise blocks as tokens - the scanner is multi-language: define keywords in scanner spec - as a result, we define how to skip semi-colon insertion rather than how to add it.
2023-09-01	parser: skip comment modes	Marc Vertes
	Refctor node kind names by concatenating category and instance, to allow better sorting. Comments are now parsed and skipped during generation of AST.
2023-08-24	doc: add diagrams to scanner and parser readmes	Marc Vertes

2023-08-24	fix: parser must be initialized before use	Marc Vertes